Using the Infinispan REST API

This guide provides details to help you do things like configure the Infinispan REST endpoint to use cross-origin resource sharing (CORS) requests, learn about using different data formats with the REST API, as well as listing and describing REST operations for interacting with Infinispan.

1. Infinispan REST Endpoint

Infinispan servers provide RESTful HTTP access to data through a REST endpoint built on Netty.

1.1. REST Authentication

Configure authentication to the REST endpoint with the Infinispan command line interface (CLI) and the user command. The CLI lets you create and manage users, passwords, and authorization roles for accessing the REST endpoint.

When running the Docker image, configure authentication with the APP_USER and APP_PASS command line arguments.

Reference

1.2. Supported Protocols

The Infinispan REST endpoint supports HTTP/1.1 and HTTP/2 protocols.

You can do either of the following to use HTTP/2:

Perform an HTTP/1.1 upgrade.
Negotiate the communication protocol using a TLS/ALPN extension.

TLS/ALPN with JDK8 requires additional client configuration. Refer to the appropriate documentation for your REST client. In most cases you need to use either the Jetty ALPN Agent or OpenSSL bindings.

1.3. Data Formats and the REST API

Infinispan caches store data in formats that you can define with a MediaType.

See the Cache Encoding and Marshalling for more information about MediaTypes and encoding data with Infinispan.

The following example configures the storage format for entries:

<distributed-cache>
   <encoding>
      <key media-type="application/x-java-object"/>
      <value media-type="application/xml; charset=UTF-8"/>
   </encoding>
</distributed-cache>

If you do not configure a MediaType, Infinispan defaults to application/octet-stream for both keys and values. However, if the cache is indexed, Infinispan defaults to application/x-protostream.

1.3.1. Supported Formats

You can write and read data in different formats and Infinispan can convert between those formats when required.

The following "standard" formats are interchangeable:

application/x-java-object
application/octet-stream
application/x-www-form-urlencoded
text/plain

You can also convert the preceding data formats into the following formats:

application/xml
application/json
application/x-jboss-marshalling
application/x-protostream
application/x-java-serialized

Infinispan also lets you convert between application/x-protostream and application/json.

All calls to the REST API can provide headers describing the content written or the required format of the content when reading. Infinispan supports the standard HTTP/1.1 headers "Content-Type" and "Accept" that are applied for values, plus the "Key-Content-Type" with similar effect for keys.

1.3.2. Accept Headers

The Infinispan REST endpoint is compliant with the RFC-2616 Accept header and negotiates the correct MediaType based on the conversions supported.

For example, send the following header when reading data:

Accept: text/plain;q=0.7, application/json;q=0.8, */*;q=0.6

The preceding header causes Infinispan to first return content in JSON format (higher priority 0.8). If it is not possible to convert the storage format to JSON, Infinispan attempts the next format of text/plain (second highest priority 0.7). Finally, Infinispan falls back to */*, which picks a suitable format based on the cache configuration.

1.3.3. Names with Special Characters

The creation of any REST resource requires a name that is part of the URL, and in case this name contains any special characters as defined in Section 2.2 of the RFC 3986 spec, it is necessary to encode it with the Percent encoding mechanism.

1.3.4. Key-Content-Type Headers

Most REST API calls have the Key included in the URL. Infinispan assumes the Key is a java.lang.String when handling those calls, but you can use a specific header Key-Content-Type for keys in different formats.

Key-Content-Type Header Examples

Specifying a byte[] Key as a Base64 string:

API call:

`PUT /my-cache/AQIDBDM=`

Headers:

Key-Content-Type: application/octet-stream

Specifying a byte[] Key as a hexadecimal string:

API call:

GET /my-cache/0x01CA03042F

Headers:

Key-Content-Type: application/octet-stream; encoding=hex

Specifying a double Key:

API call:

POST /my-cache/3.141456

Headers:

Key-Content-Type: application/x-java-object;type=java.lang.Double

The type parameter for application/x-java-object is restricted to:

Primitive wrapper types
java.lang.String
Bytes, making application/x-java-object;type=Bytes equivalent to application/octet-stream;encoding=hex.

1.3.5. JSON/Protostream Conversion

When caches are indexed, or specifically configured to store application/x-protostream, you can send and receive JSON documents that are automatically converted to and from Protobuf.

You must register a Protobuf schema for the conversion to work.

To register protobuf schemas via REST, invoke a POST or PUT in the ___protobuf_metadata cache as in the following example:

curl -u user:password -X POST --data-binary @./schema.proto http://127.0.0.1:11222/rest/v2/caches/___protobuf_metadata/schema.proto

When writing JSON documents, a special field _type must be present in the document to identity the Protobuf Message that corresponds to the document.

Person.proto

message Person  {
  required string name = 1;
  required int32 age = 2;
}

Person.json

{
   "_type": "Person",
   "name": "user1",
   "age": 32
}

1.4. Cross-Origin Resource Sharing (CORS) Requests

The Infinispan REST connector supports CORS, including preflight and rules based on the request origin.

The following shows an example REST connector configuration with CORS rules:

<rest-connector name="rest1" socket-binding="rest" cache-container="default">
   <cors-rules>
      <cors-rule name="restrict host1"
                 allow-credentials="false">
         <allowed-origins>http://host1,https://host1</allowed-origins>
         <allowed-methods>GET</allowed-methods>
      </cors-rule>
      <cors-rule name="allow ALL"
                 allow-credentials="true"
                 max-age-seconds="2000">
         <allowed-origins>*</allowed-origins>
         <allowed-methods>GET,OPTIONS,POST,PUT,DELETE</allowed-methods>
         <allowed-headers>Key-Content-Type</allowed-headers>
      </cors-rule>
   </cors-rules>
</rest-connector>

Infinispan evaluates CORS rules sequentially based on the "Origin" header set by the browser.

In the preceding example, if the origin is either "http://host1" or "https://host1", then the rule "restrict host1" applies. If the origin is different, then the next rule is tested.

Because the "allow ALL" rule permits all origins, any script that has an origin other than "http://host1" or "https://host1" can perform the allowed methods and use the supplied headers.

For information about configuring CORS rules, see the Infinispan Server Configuration Schema.

1.4.1. Allowing all CORS permissions for some origins

The VM property infinispan.server.rest.cors-allow can be used when starting the server to allow all permissions to one or more origins. Example:

./bin/server.sh -Dinfinispan.server.rest.cors-allow=http://192.168.1.78:11222,http://host.mydomain.com

All origins specified using this method will take precedence over the configured rules.

2. Interacting with the Infinispan REST API

The Infinispan REST API lets you monitor, maintain, and manage Infinispan deployments and provides access to your data.

By default Infinispan REST API operations return 200 (OK) when successful. However, when some operations are processed successfully, they return an HTTP status code such as 204 or 202 instead of 200.

2.1. Creating and Managing Caches

Create and manage Infinispan caches and perform operations on data.

2.1.1. Creating Caches

Create named caches across Infinispan clusters with POST requests that include XML or JSON configuration in the payload.

POST /rest/v2/caches/{cacheName}

Table 1. Headers
Header	Required or Optional	Parameter
`Content-Type`	REQUIRED	Sets the MediaType for the Infinispan configuration payload; either `application/xml` or `application/json`.
`Flags`	OPTIONAL	Used to set AdminFlags

Cache configuration

You can create declarative cache configuration in XML, JSON, and YAML format.

All declarative caches must conform to the Infinispan schema. Configuration in JSON format must follow the structure of an XML configuration, elements correspond to objects and attributes correspond to fields.

Infinispan restricts characters to a maximum of 255 for a cache name or a cache template name. If you exceed this character limit, Infinispan throws an exception. Write succinct cache names and cache template names.

A file system might set a limitation for the length of a file name, so ensure that a cache’s name does not exceed this limitation. If a cache name exceeds a file system’s naming limitation, general operations or initialing operations towards that cache might fail. Write succinct file names.

Distributed caches

XML

<distributed-cache owners="2"
                   segments="256"
                   capacity-factor="1.0"
                   l1-lifespan="5000"
                   mode="SYNC"
                   statistics="true">
  <encoding media-type="application/x-protostream"/>
  <locking isolation="REPEATABLE_READ"/>
  <transaction mode="FULL_XA"
               locking="OPTIMISTIC"/>
  <expiration lifespan="5000"
              max-idle="1000" />
  <memory max-count="1000000"
          when-full="REMOVE"/>
  <indexing enabled="true"
            storage="local-heap">
    <index-reader refresh-interval="1000"/>
    <indexed-entities>
      <indexed-entity>org.infinispan.Person</indexed-entity>
    </indexed-entities>
  </indexing>
  <partition-handling when-split="ALLOW_READ_WRITES"
                      merge-policy="PREFERRED_NON_NULL"/>
  <persistence passivation="false">
    <!-- Persistent storage configuration. -->
  </persistence>
</distributed-cache>

JSON

{
  "distributed-cache": {
    "mode": "SYNC",
    "owners": "2",
    "segments": "256",
    "capacity-factor": "1.0",
    "l1-lifespan": "5000",
    "statistics": "true",
    "encoding": {
      "media-type": "application/x-protostream"
    },
    "locking": {
      "isolation": "REPEATABLE_READ"
    },
    "transaction": {
      "mode": "FULL_XA",
      "locking": "OPTIMISTIC"
    },
    "expiration" : {
      "lifespan" : "5000",
      "max-idle" : "1000"
    },
    "memory": {
      "max-count": "1000000",
      "when-full": "REMOVE"
    },
    "indexing" : {
          "enabled" : true,
          "storage" : "local-heap",
          "index-reader" : {
            "refresh-interval" : "1000"
          },
          "indexed-entities": [
            "org.infinispan.Person"
          ]
    },
    "partition-handling" : {
      "when-split" : "ALLOW_READ_WRITES",
      "merge-policy" : "PREFERRED_NON_NULL"
    },
    "persistence" : {
      "passivation" : false
    }
  }
}

YAML

distributedCache:
  mode: "SYNC"
  owners: "2"
  segments: "256"
  capacityFactor: "1.0"
  l1Lifespan: "5000"
  statistics: "true"
  encoding:
    mediaType: "application/x-protostream"
  locking:
    isolation: "REPEATABLE_READ"
  transaction:
    mode: "FULL_XA"
    locking: "OPTIMISTIC"
  expiration:
    lifespan: "5000"
    maxIdle: "1000"
  memory:
    maxCount: "1000000"
    whenFull: "REMOVE"
  indexing:
    enabled: "true"
    storage: "local-heap"
    indexReader:
      refreshInterval: "1000"
    indexedEntities:
      - "org.infinispan.Person"
  partitionHandling:
    whenSplit: "ALLOW_READ_WRITES"
    mergePolicy: "PREFERRED_NON_NULL"
  persistence:
    passivation: "false"
    # Persistent storage configuration.

Replicated caches

XML

<replicated-cache segments="256"
                  mode="SYNC"
                  statistics="true">
  <encoding media-type="application/x-protostream"/>
  <locking isolation="REPEATABLE_READ"/>
  <transaction mode="FULL_XA"
               locking="OPTIMISTIC"/>
  <expiration lifespan="5000"
              max-idle="1000" />
  <memory max-count="1000000"
          when-full="REMOVE"/>
  <indexing enabled="true"
            storage="local-heap">
    <index-reader refresh-interval="1000"/>
    <indexed-entities>
      <indexed-entity>org.infinispan.Person</indexed-entity>
    </indexed-entities>
  </indexing>
  <partition-handling when-split="ALLOW_READ_WRITES"
                      merge-policy="PREFERRED_NON_NULL"/>
  <persistence passivation="false">
    <!-- Persistent storage configuration. -->
  </persistence>
</replicated-cache>

JSON

{
  "replicated-cache": {
    "mode": "SYNC",
    "segments": "256",
    "statistics": "true",
    "encoding": {
      "media-type": "application/x-protostream"
    },
    "locking": {
      "isolation": "REPEATABLE_READ"
    },
    "transaction": {
      "mode": "FULL_XA",
      "locking": "OPTIMISTIC"
    },
    "expiration" : {
      "lifespan" : "5000",
      "max-idle" : "1000"
    },
    "memory": {
      "max-count": "1000000",
      "when-full": "REMOVE"
    },
    "indexing" : {
      "enabled" : true,
      "storage" : "local-heap",
      "index-reader" : {
        "refresh-interval" : "1000"
        },
      "indexed-entities": [
        "org.infinispan.Person"
      ]
    },
    "partition-handling" : {
      "when-split" : "ALLOW_READ_WRITES",
      "merge-policy" : "PREFERRED_NON_NULL"
    },
    "persistence" : {
      "passivation" : false
    }
  }
}

YAML

replicatedCache:
  mode: "SYNC"
  segments: "256"
  statistics: "true"
  encoding:
    mediaType: "application/x-protostream"
  locking:
    isolation: "REPEATABLE_READ"
  transaction:
    mode: "FULL_XA"
    locking: "OPTIMISTIC"
  expiration:
    lifespan: "5000"
    maxIdle: "1000"
  memory:
    maxCount: "1000000"
    whenFull: "REMOVE"
  indexing:
    enabled: "true"
    storage: "local-heap"
    indexReader:
      refreshInterval: "1000"
    indexedEntities:
      - "org.infinispan.Person"
  partitionHandling:
    whenSplit: "ALLOW_READ_WRITES"
    mergePolicy: "PREFERRED_NON_NULL"
  persistence:
    passivation: "false"
    # Persistent storage configuration.

Multiple caches

XML

<infinispan
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="urn:infinispan:config:14.0 https://infinispan.org/schemas/infinispan-config-14.0.xsd
                          urn:infinispan:server:14.0 https://infinispan.org/schemas/infinispan-server-14.0.xsd"
      xmlns="urn:infinispan:config:14.0"
      xmlns:server="urn:infinispan:server:14.0">
  <cache-container name="default"
                   statistics="true">
    <distributed-cache name="mycacheone"
                       mode="ASYNC"
                       statistics="true">
      <encoding media-type="application/x-protostream"/>
      <expiration lifespan="300000"/>
      <memory max-size="400MB"
              when-full="REMOVE"/>
    </distributed-cache>
    <distributed-cache name="mycachetwo"
                       mode="SYNC"
                       statistics="true">
      <encoding media-type="application/x-protostream"/>
      <expiration lifespan="300000"/>
      <memory max-size="400MB"
              when-full="REMOVE"/>
    </distributed-cache>
  </cache-container>
</infinispan>

JSON

{
  "infinispan" : {
    "cache-container" : {
      "name" : "default",
      "statistics" : "true",
      "caches" : {
        "mycacheone" : {
          "distributed-cache" : {
            "mode": "ASYNC",
            "statistics": "true",
            "encoding": {
              "media-type": "application/x-protostream"
            },
            "expiration" : {
              "lifespan" : "300000"
            },
            "memory": {
              "max-size": "400MB",
              "when-full": "REMOVE"
            }
          }
        },
        "mycachetwo" : {
          "distributed-cache" : {
            "mode": "SYNC",
            "statistics": "true",
            "encoding": {
              "media-type": "application/x-protostream"
            },
            "expiration" : {
              "lifespan" : "300000"
            },
            "memory": {
              "max-size": "400MB",
              "when-full": "REMOVE"
            }
          }
        }
      }
    }
  }
}

YAML

infinispan:
  cacheContainer:
    name: "default"
    statistics: "true"
    caches:
      mycacheone:
       distributedCache:
          mode: "ASYNC"
          statistics: "true"
          encoding:
            mediaType: "application/x-protostream"
          expiration:
            lifespan: "300000"
          memory:
            maxSize: "400MB"
            whenFull: "REMOVE"
      mycachetwo:
        distributedCache:
          mode: "SYNC"
          statistics: "true"
          encoding:
            mediaType: "application/x-protostream"
          expiration:
            lifespan: "300000"
          memory:
            maxSize: "400MB"
            whenFull: "REMOVE"

Additional resources

2.1.2. Modifying Caches

Make changes to attributes in cache configurations across Infinispan clusters with PUT requests that include XML or JSON configuration in the payload.

You can modify a cache only if the changes are compatible with the existing configuration.

For example you cannot use a replicated cache configuration to modify a distributed cache. Likewise if you create a cache configuration with a specific attribute, you cannot modify the configuration to use a different attribute instead. For example, attempting to modify cache configuration by specifying a value for the max-count attribute results in invalid configuration if the max-size is already set.

PUT /rest/v2/caches/{cacheName}

Table 2. Headers
Header	Required or Optional	Parameter
`Content-Type`	REQUIRED	Sets the MediaType for the Infinispan configuration payload; either `application/xml` or `application/json`.
`Flags`	OPTIONAL	Used to set AdminFlags

2.1.3. Verifying Caches

Check if caches are available in Infinispan clusters with HEAD requests.

HEAD /rest/v2/caches/{cacheName}

2.1.4. Creating Caches with Templates

Create caches from Infinispan templates with POST requests and the ?template= parameter.

POST /rest/v2/caches/{cacheName}?template={templateName}

See Listing Available Cache Templates.

2.1.5. Retrieving Cache Configuration

Retrieve Infinispan cache configurations with GET requests.

GET /rest/v2/caches/{name}?action=config

Table 3. Headers
Header	Required or Optional	Parameter
`Accept`	OPTIONAL	Sets the required format to return content. Supported formats are `application/xml` and `application/json`. The default is `application/json`. See Accept for more information.

2.1.6. Converting Cache Configurations between XML, JSON and YAML

Invoke a POST request with valid configuration and the ?action=convert parameter. Infinispan responds with the equivalent representation of the configuration in the type specified by the Accept header.

POST /rest/v2/caches?action=convert

To convert cache configuration you must specify the input format for the configuration with the Content-Type header and the desired output format with the Accept header. For example, the following command converts the replicated cache configuration from XML to YAML:

curl localhost:11222/rest/v2/caches?action=convert \
--digest -u username:password \
-X POST -H "Accept: application/yaml" -H "Content-Type: application/xml" \
-d '<replicated-cache mode="SYNC" statistics="false"><encoding media-type="application/x-protostream"/><expiration lifespan="300000" /><memory max-size="400MB" when-full="REMOVE"/></replicated-cache>'

2.1.7. Comparing Cache Configurations

Invoke a POST request with a multipart/form-data body containing two cache configurations and the ?action=compare parameter.

POST /rest/v2/caches?action=compare

Add the ignoreMutable=true parameter to ignore mutable attributes in the comparison.

Infinispan responds with 204 (No Content) in case the configurations are equal, and 409 (Conflict) in case they are different.

2.1.8. Retrieving All Cache Details

Invoke a GET request to retrieve all details for Infinispan caches.

GET /rest/v2/caches/{name}?action=stats

Infinispan provides a JSON response such as the following:

 {
  "stats": {
    "time_since_start": -1,
    "time_since_reset": -1,
    "hits": -1,
    "current_number_of_entries": -1,
    "current_number_of_entries_in_memory": -1,
    "total_number_of_entries": -1,
    "stores": -1,
    "off_heap_memory_used": -1,
    "data_memory_used": -1,
    "retrievals": -1,
    "misses": -1,
    "remove_hits": -1,
    "remove_misses": -1,
    "evictions": -1,
    "average_read_time": -1,
    "average_read_time_nanos": -1,
    "average_write_time": -1,
    "average_write_time_nanos": -1,
    "average_remove_time": -1,
    "average_remove_time_nanos": -1,
    "required_minimum_number_of_nodes": -1
  },
  "size": 0,
  "configuration": {
    "distributed-cache": {
      "mode": "SYNC",
      "transaction": {
        "stop-timeout": 0,
        "mode": "NONE"
      }
    }
  },
  "rehash_in_progress": false,
  "rebalancing_enabled": true,
  "bounded": false,
  "indexed": false,
  "persistent": false,
  "transactional": false,
  "secured": false,
  "has_remote_backup": false,
  "indexing_in_progress": false,
  "statistics": false,
  "mode" : "DIST_SYNC",
  "storage_type": "HEAP",
  "max_size": "",
  "max_size_bytes" : -1
}

stats current stats of the cache.
size the estimated size for the cache.
configuration the cache configuration.
rehash_in_progress true when a rehashing is in progress.
indexing_in_progress true when indexing is in progress.
rebalancing_enabled is true if rebalancing is enabled. Fetching this property might fail on the server. In that case the property won’t be present in the payload.
bounded when expiration is enabled.
indexed true if the cache is indexed.
persistent true if the cache is persisted.
transactional true if the cache is transactional.
secured true if the cache is secured.
has_remote_backup true if the cache has remote backups.
key_storage the media type of the cache keys.
value_storage the media type of the cache values.

key_storage and value_storage matches encoding configuration of the cache. For server caches with no encoding, Infinispan assumes application/x-protostream when a cache is indexed and application/unknown otherwise.

2.1.9. Retrieving Data Distribution of a Cache

Invoke a GET request to retrieve all details for data distribution of Infinispan caches.

GET /rest/v2/caches/{name}?action=distribution

Infinispan provides a JSON response such as the following:

[
  {
    "node_name": "NodeA",
    "node_addresses": [
      "127.0.0.1:44175"
    ],
    "memory_entries": 0,
    "total_entries": 0,
    "memory_used": 528512
  },
  {
    "node_name":"NodeB",
    "node_addresses": [
      "127.0.0.1:44187"
    ],
    "memory_entries": 0,
    "total_entries": 0,
    "memory_used": 528512
  }
]

Each element in the list represents a node. The properties are:

node_name is the node name
node_addresses is a list with all the node’s physical addresses.
memory_entries the number of entries the node holds in memory belonging to the cache.
total_entries the number of entries the node has in memory and disk belonging to the cache.
memory_used the value in bytes the eviction algorithm estimates the cache occupies. Returns -1 if eviction is not enabled.

2.1.10. Retrieving all mutable cache configuration attributes

Invoke a GET request to retrieve all mutable cache configuration attributes for Infinispan caches.

GET /rest/v2/caches/{name}?action=get-mutable-attributes

Infinispan provides a JSON response such as the following:

[
  "jmx-statistics.statistics",
  "locking.acquire-timeout",
  "transaction.single-phase-auto-commit",
  "expiration.max-idle",
  "transaction.stop-timeout",
  "clustering.remote-timeout",
  "expiration.lifespan",
  "expiration.interval",
  "memory.max-count",
  "memory.max-size"
]

Add the full parameter to obtain values and type information:

GET /rest/v2/caches/mycache?action=get-mutable-attributes&full=true

Infinispan provides a JSON response such as the following:

{
  "jmx-statistics.statistics": {
    "value": true,
    "type": "boolean"
  },
  "locking.acquire-timeout": {
    "value": 15000,
    "type": "long"
  },
  "transaction.single-phase-auto-commit": {
    "value": false,
    "type": "boolean"
  },
  "expiration.max-idle": {
    "value": -1,
    "type": "long"
  },
  "transaction.stop-timeout": {
    "value": 30000,
    "type": "long"
  },
  "clustering.remote-timeout": {
    "value": 17500,
    "type": "long"
  },
  "expiration.lifespan": {
    "value": -1,
    "type": "long"
  },
  "expiration.interval": {
    "value": 60000,
    "type": "long"
  },
  "memory.max-count": {
    "value": -1,
    "type": "long"
  },
  "memory.max-size": {
    "value": null,
    "type": "string"
  }
}

For attributes of type enum, an additional universe property will contain the set of possible values.

2.1.11. Updating cache configuration attributes

Invoke a POST request to change a mutable cache configuration attribute.

POST /rest/v2/caches/{name}?action=set-mutable-attributes&attribute-name={attributeName}&attribute-value={attributeValue}

2.1.12. Adding Entries

Add entries to caches with POST requests.

POST /rest/v2/caches/{cacheName}/{cacheKey}

The preceding request places the payload, or request body, in the cacheName cache with the cacheKey key. The request replaces any data that already exists and updates the Time-To-Live and Last-Modified values, if they apply.

If the entry is created successfully, the service returns 204 (No Content).

If a value already exists for the specified key, the POST request returns 409 (Conflict) and does not modify the value. To update values, you should use PUT requests. See Replacing Entries.

Table 4. Headers
Header	Required or Optional	Parameter
`Key-Content-Type`	OPTIONAL	Sets the content type for the key in the request. See Key-Content-Type for more information.
`Content-Type`	OPTIONAL	Sets the MediaType of the value for the key.
`timeToLiveSeconds`	OPTIONAL	Sets the number of seconds before the entry is automatically deleted. If you do not set this parameter, Infinispan uses the default value from the configuration. If you set a negative value, the entry is never deleted.
`maxIdleTimeSeconds`	OPTIONAL	Sets the number of seconds that entries can be idle. If a read or write operation does not occur for an entry after the maximum idle time elapses, the entry is automatically deleted. If you do not set this parameter, Infinispan uses the default value from the configuration. If you set a negative value, the entry is never deleted.
`flags`	OPTIONAL	The flags used to add the entry. See Flag for more information.

The flags header also applies to all other operations involving data manipulation on the cache,

If both timeToLiveSeconds and maxIdleTimeSeconds have a value of 0, Infinispan uses the default lifespan and maxIdle values from the configuration.

If only maxIdleTimeSeconds has a value of 0, Infinispan uses:

the default maxIdle value from the configuration.
the value for timeToLiveSeconds that you pass as a request parameter or a value of -1 if you do not pass a value.

If only timeToLiveSeconds has a value of 0, Infinispan uses:

the default lifespan value from the configuration.
the value for maxIdle that you pass as a request parameter or a value of -1 if you do not pass a value.

2.1.13. Replacing Entries

Replace entries in caches with PUT requests.

PUT /rest/v2/caches/{cacheName}/{cacheKey}

If a value already exists for the specified key, the PUT request updates the value. If you do not want to modify existing values, use POST requests that return 409 (Conflict) instead of modifying values. See Adding Values.

2.1.14. Retrieving Data By Keys

Retrieve data for specific keys with GET requests.

GET /rest/v2/caches/{cacheName}/{cacheKey}

The server returns data from the given cache, cacheName, under the given key, cacheKey, in the response body. Responses contain Content-Type headers that correspond to the MediaType negotiation.

Browsers can also access caches directly, for example as a content delivery network (CDN). Infinispan returns a unique ETag for each entry along with the Last-Modified and Expires header fields.

These fields provide information about the state of the data that is returned in your request. ETags allow browsers and other clients to request only data that has changed, which conserves bandwidth.

Table 5. Headers
Header	Required or Optional	Parameter
`Key-Content-Type`	OPTIONAL	Sets the content type for the key in the request. The default is `application/x-java-object; type=java.lang.String`. See Key-Content-Type for more information.
`Accept`	OPTIONAL	Sets the required format to return content. See Accept for more information.

Append the extended parameter to the query string to get additional information:

GET /rest/v2/caches/{cacheName}/{cacheKey}?extended

The preceding request returns custom headers:

Cluster-Primary-Owner returns the node name that is the primary owner of the key.
Cluster-Node-Name returns the JGroups node name of the server that handled the request.
Cluster-Physical-Address returns the physical JGroups address of the server that handled the request.

2.1.15. Checking if Entries Exist

Verify that specific entries exists with HEAD requests.

HEAD /rest/v2/caches/{cacheName}/{cacheKey}

The preceding request returns only the header fields and the same content that you stored with the entry. For example, if you stored a String, the request returns a String. If you stored binary, base64-encoded, blobs or serialized Java objects, Infinispan does not de-serialize the content in the request.

HEAD requests also support the extended parameter.

Table 6. Headers
Header	Required or Optional	Parameter
`Key-Content-Type`	OPTIONAL	Sets the content type for the key in the request. The default is `application/x-java-object; type=java.lang.String`. See Key-Content-Type for more information.

2.1.16. Deleting Entries

Remove entries from caches with DELETE requests.

DELETE /rest/v2/caches/{cacheName}/{cacheKey}

Table 7. Headers
Header	Required or Optional	Parameter
`Key-Content-Type`	OPTIONAL	Sets the content type for the key in the request. The default is `application/x-java-object; type=java.lang.String`. See Key-Content-Type for more information.

2.1.17. Deleting Caches

Remove caches from Infinispan clusters with DELETE requests.

DELETE /rest/v2/caches/{cacheName}

2.1.18. Retrieving All Keys from Caches

Invoke GET requests to retrieve all the keys in a cache in JSON format.

GET /rest/v2/caches/{cacheName}?action=keys

Table 8. Request Parameters
Parameter	Required or Optional	Value
`limit`	OPTIONAL	Specifies the maximum number of keys to retrieve using an InputStream. A negative value retrieves all keys. The default value is `-1`.
`batch`	OPTIONAL	Specifies the internal batch size when retrieving the keys. The default value is `1000`.

2.1.19. Retrieving All Entries from Caches

Invoke GET requests to retrieve all the entries in a cache in JSON format.

GET /rest/v2/caches/{cacheName}?action=entries

Table 9. Request Parameters
Parameter	Required or Optional	Value
`metadata`	OPTIONAL	Includes metadata for each entry in the response. The default value is `false`.
`limit`	OPTIONAL	Specifies the maximum number of keys to include in the response. A negative value retrieves all keys. The default value is `-1`.
`batch`	OPTIONAL	Specifies the internal batch size when retrieving the keys. The default value is `1000`.
`content-negotiation`	OPTIONAL	If `true`, will convert keys and values to a readable format. For caches with text encodings (e.g., text/plain, xml, json), the server returns keys and values as plain text. For caches with binary encodings, the server will return the entries as JSON if the conversion is supported, otherwise in a text hexadecimal format, e.g., `0xA123CF98`. When content-negotiation is used, the response will contain two headers: `key-content-type` and `value-content-type` to described the negotiated format.

Infinispan provides a JSON response such as the following:

[
    {
        "key":1,
        "value":"value1",
        "timeToLiveSeconds":-1,
        "maxIdleTimeSeconds":-1,
        "created":-1,
        "lastUsed":-1,
        "expireTime":-1
    },
    {
        "key":2,
        "value":"value2",
        "timeToLiveSeconds":10,
        "maxIdleTimeSeconds":45,
        "created":1607966017944,
        "lastUsed": 1607966017944,
        "expireTime":1607966027944
    }
]

key The key for the entry.
value The value of the entry.
timeToLiveSeconds Based on the entry lifespan but in seconds, or -1 if the entry never expires. It’s not returned unless you set metadata="true".
maxIdleTimeSeconds Maximum idle time, in seconds, or -1 if entry never expires. It’s not returned unless you set metadata="true".
created Time the entry was created or or -1 for immortal entries. It’s not returned unless you set metadata="true".
lastUsed Last time an operation was performed on the entry or -1 for immortal entries. It’s not returned unless you set metadata="true".
expireTime Time when the entry expires or -1 for immortal entries. It’s not returned unless you set metadata="true".

2.1.20. Clearing Caches

To delete all data from a cache, invoke a POST request with the ?action=clear parameter.

POST /rest/v2/caches/{cacheName}?action=clear

If the operation successfully completes, the service returns 204 (No Content).

2.1.21. Getting Cache Size

Retrieve the size of caches across the entire cluster with GET requests and the ?action=size parameter.

GET /rest/v2/caches/{cacheName}?action=size

2.1.22. Getting Cache Statistics

Obtain runtime statistics for caches with GET requests.

GET /rest/v2/caches/{cacheName}?action=stats

2.1.23. Listing Caches

List all available caches in Infinispan clusters with GET requests.

GET /rest/v2/caches/

2.1.24. Listening to cache events

Receive cache events using Server-Sent Events. The event value will be one of cache-entry-created, cache-entry-removed, cache-entry-updated, cache-entry-expired. The data value will contain the key of the entry that has fired the event in the format set by the Accept header.

GET /rest/v2/caches/{name}?action=listen

Table 10. Headers
Header	Required or Optional	Parameter
`Accept`	OPTIONAL	Sets the required format to return content. Supported formats are `text/plain` and `application/json`. The default is `application/json`. See Accept for more information.

2.1.25. Enabling rebalancing

Turn on automatic rebalancing for a specific cache.

POST /rest/v2/caches/{cacheName}?action=enable-rebalancing

2.1.26. Disabling rebalancing

Turn off automatic rebalancing for a specific cache.

POST /rest/v2/caches/{cacheName}?action=disable-rebalancing

2.1.27. Getting Cache Availability

Retrieve the availability of a cache.

GET /rest/v2/caches/{cacheName}?action=get-availability

You can get the availability of internal caches but this is subject to change in future Infinispan versions.

2.1.28. Setting Cache Availability

Change the availability of clustered caches when using either the DENY_READ_WRITES or ALLOW_READS partition handling strategy.

POST /rest/v2/caches/{cacheName}?action=set-availability&availability={AVAILABILITY}

Table 11. Request Parameters
Parameter	Required or Optional	Value
`availability`	REQUIRED	AVAILABLE or DEGRADED_MODE

AVAILABLE makes caches available to all nodes in a network partition.
DEGRADED_MODE prevents read and write operations on caches when network partitions occur.

You can set the availability of internal caches but this is subject to change in future Infinispan versions.

2.1.29. Set a Stable Topology

By default, after a cluster shutdown, Infinispan waits for all nodes to join the cluster and restore the topology. However, it is possible to define the current cluster topology as stable for a specific cache using the REST operation.

POST /rest/v2/caches/{cacheName}?action=initialize&force={FORCE}

Table 12. Request Parameters
Parameter	Required or Optional	Value
`force`	OPTIONAL	true or false.

force is required when the number of missing nodes in the current topology is greater or equal to the number of owners.

Manually installing a topology can lead to data loss, only perform this operation if the initial topology cannot be recreated.

2.1.30. Indexing and Querying with the REST API

Query remote caches with GET requests and the ?action=search&query parameter from any HTTP client.

GET /rest/v2/caches/{cacheName}?action=search&query={ickle query}

Infinispan response

{
  "total_results" : 150,
  "hits" : [ {
    "hit" : {
      "name" : "user1",
      "age" : 35
    }
  }, {
    "hit" : {
       "name" : "user2",
       "age" : 42
    }
  }, {
    "hit" : {
       "name" : "user3",
       "age" : 12
    }
  } ]
}

total_results displays the total number of results from the query.
hits is an array of matches from the query.
hit is an object that matches the query.

Hits can contain all fields or a subset of fields if you use a Select clause.

Table 13. Request Parameters
Parameter	Required or Optional	Value
`query`	REQUIRED	Specifies the query string.
`offset`	OPTIONAL	Specifies the index of the first result to return. The default is `0`.
`max_results`	OPTIONAL	Sets the number of results to return. The default is `10`.
`hit_count_accuracy`	OPTIONAL	Limits the required accuracy of the hit count for the indexed queries to an upper-bound. The default is `10000`. You can change the default limit by setting the `query.hit-count-accuracy` cache property.
`local`	OPTIONAL	When `true`, the query is restricted to the data present in node that process the request. The default is `false`.

To use the body of the request instead of specifying query parameters, invoke POST requests as follows:

POST /rest/v2/caches/{cacheName}?action=search

Query in request body

{
 "query":"from Entity where name:\"user1\"",
 "max_results":20,
 "offset":10
}

Rebuilding indexes

When you delete fields or change index field definitions, you must rebuild the index to ensure the index is consistent with data in the cache.

Rebuilding Protobuf schema using REST, CLI, Infinispan Console or remote client might lead to inconsistencies. Remote clients might have different versions of the Protostream entity and this might lead to unreliable behavior.

Reindex all data in caches with POST requests and the ?action=reindex parameter.

POST /rest/v2/caches/{cacheName}/search/indexes?action=reindex

Table 14. Request Parameters
Parameter	Required or Optional	Value
`mode`	OPTIONAL	Values for the `mode` parameter are as follows: * `sync` returns `204 (No Content)` only after the re-indexing operation is complete. * `async` returns `204 (No Content)` immediately and the re-indexing operation continues running in the cluster. You can check the status with the Index Statistics REST call.
`local`	OPTIONAL	When `true`, only the data from node that process the request is re-indexed. The default is `false`, meaning all data cluster-wide is re-indexed.

Updating index schema

The update index schema operation lets you add schema changes with a minimal downtime. Instead of removing previously indexed data and recreating the index schema, Infinispan adds new fields to the existing schema.

Update the index schema of values in your cache using POST requests and the ?action=updateSchema parameter.

POST /rest/v2/caches/{cacheName}/search/indexes?action=updateSchema

Purging indexes

Delete all indexes from caches with POST requests and the ?action=clear parameter.

POST /rest/v2/caches/{cacheName}/search/indexes?action=clear

If the operation successfully completes, the service returns 204 (No Content).

Get Indexes Metamodel

Present the full index schema metamodel of all indexes defined on this cache.

GET /rest/v2/caches/{cacheName}/search/indexes/metamodel

Infinispan response

[{
    "entity-name": "org.infinispan.query.test.Book",
    "java-class": "org.infinispan.query.test.Book",
    "index-name": "org.infinispan.query.test.Book",
    "value-fields": {
        "description": {
            "multi-valued": false,
            "multi-valued-in-root": false,
            "type": "java.lang.String",
            "projection-type": "java.lang.String",
            "argument-type": "java.lang.String",
            "searchable": true,
            "sortable": false,
            "projectable": false,
            "aggregable": false,
            "analyzer": "standard"
        },
        "name": {
            "multi-valued": false,
            "multi-valued-in-root": true,
            "type": "java.lang.String",
            "projection-type": "java.lang.String",
            "argument-type": "java.lang.String",
            "searchable": true,
            "sortable": false,
            "projectable": false,
            "aggregable": false,
            "analyzer": "standard"
        },
        "surname": {
            "multi-valued": false,
            "multi-valued-in-root": true,
            "type": "java.lang.String",
            "projection-type": "java.lang.String",
            "argument-type": "java.lang.String",
            "searchable": true,
            "sortable": false,
            "projectable": false,
            "aggregable": false
        },
        "title": {
            "multi-valued": false,
            "multi-valued-in-root": false,
            "type": "java.lang.String",
            "projection-type": "java.lang.String",
            "argument-type": "java.lang.String",
            "searchable": true,
            "sortable": false,
            "projectable": false,
            "aggregable": false
        }
    },
    "object-fields": {
        "authors": {
            "multi-valued": true,
            "multi-valued-in-root": true,
            "nested": true,
            "value-fields": {
                "name": {
                    "multi-valued": false,
                    "multi-valued-in-root": true,
                    "type": "java.lang.String",
                    "projection-type": "java.lang.String",
                    "argument-type": "java.lang.String",
                    "searchable": true,
                    "sortable": false,
                    "projectable": false,
                    "aggregable": false,
                    "analyzer": "standard"
                },
                "surname": {
                    "multi-valued": false,
                    "multi-valued-in-root": true,
                    "type": "java.lang.String",
                    "projection-type": "java.lang.String",
                    "argument-type": "java.lang.String",
                    "searchable": true,
                    "sortable": false,
                    "projectable": false,
                    "aggregable": false
                }
            }
        }
    }
}, {
    "entity-name": "org.infinispan.query.test.Author",
    "java-class": "org.infinispan.query.test.Author",
    "index-name": "org.infinispan.query.test.Author",
    "value-fields": {
        "surname": {
            "multi-valued": false,
            "multi-valued-in-root": false,
            "type": "java.lang.String",
            "projection-type": "java.lang.String",
            "argument-type": "java.lang.String",
            "searchable": true,
            "sortable": false,
            "projectable": false,
            "aggregable": false
        },
        "name": {
            "multi-valued": false,
            "multi-valued-in-root": false,
            "type": "java.lang.String",
            "projection-type": "java.lang.String",
            "argument-type": "java.lang.String",
            "searchable": true,
            "sortable": false,
            "projectable": false,
            "aggregable": false,
            "analyzer": "standard"
        }
    }
}]

Retrieving Query and Index Statistics

Obtain information about queries and indexes in caches with GET requests.

You must enable statistics in the cache configuration or results are empty.

GET /rest/v2/caches/{cacheName}/search/stats

Table 15. Request Parameters
Parameter	Required or Optional	Value
`scope`	OPTIONAL	Use `cluster` to retrieve consolidated statistics for all members of the cluster. When omitted, Infinispan returns statistics for the local queries and indexes.

Infinispan response

{
  "query": {
    "indexed_local": {
      "count": 1,
      "average": 12344.2,
      "max": 122324,
      "slowest": "FROM Entity WHERE field > 4"
    },
    "indexed_distributed": {
      "count": 0,
      "average": 0.0,
      "max": -1,
      "slowest": "FROM Entity WHERE field > 4"
    },
    "hybrid": {
      "count": 0,
      "average": 0.0,
      "max": -1,
      "slowest": "FROM Entity WHERE field > 4 AND desc = 'value'"
    },
    "non_indexed": {
      "count": 0,
      "average": 0.0,
      "max": -1,
      "slowest": "FROM Entity WHERE desc = 'value'"
    },
    "entity_load": {
      "count": 123,
      "average": 10.0,
      "max": 120
    }
  },
  "index": {
    "types": {
      "org.infinispan.same.test.Entity": {
        "count": 5660001,
        "size": 0
      },
      "org.infinispan.same.test.AnotherEntity": {
        "count": 40,
        "size": 345560
      }
    },
    "reindexing": false
  }
}

In the query section:

indexed_local Provides details about indexed queries.
indexed_distributed Provides details about distributed indexed queries.
hybrid Provides details about queries that used the index only partially.
non_indexed Provides details about queries that didn’t use the index.
entity_load Provides details about cache operations to fetch objects after indexed queries execution.

Time is always measured in nanoseconds.

In the index section:

types Provide details about each indexed type (class name or protobuf message) that is configured in the cache.
- count The number of entities indexed for the type.
- size Usage in bytes of the type.
reindexing If the value is true, the Indexer is running in the cache.

Clearing Query Statistics

Reset runtime statistics with POST requests and the ?action=clear parameter.

POST /rest/v2/caches/{cacheName}/search/stats?action=clear

Infinispan resets only query execution times for the local node only. This operation does not clear index statistics.

Retrieving Index Statistics (Deprecated)

Obtain information about indexes in caches with GET requests.

GET /rest/v2/caches/{cacheName}/search/indexes/stats

Infinispan response

{
    "indexed_class_names": ["org.infinispan.sample.User"],
    "indexed_entities_count": {
        "org.infinispan.sample.User": 4
    },
    "index_sizes": {
        "cacheName_protobuf": 14551
    },
    "reindexing": false
}

indexed_class_names Provides the class names of the indexes present in the cache. For Protobuf the value is always org.infinispan.query.remote.impl.indexing.ProtobufValueWrapper.
indexed_entities_count Provides the number of entities indexed per class.
index_sizes Provides the size, in bytes, for each index in the cache.
reindexing Indicates if a re-indexing operation was performed for the cache. If the value is true, the MassIndexer was started in the cache.

Retrieving Query Statistics (Deprecated)

Get information about the queries that have been run in caches with GET requests.

GET /rest/v2/caches/{cacheName}/search/query/stats

Infinispan response

{
    "search_query_execution_count":20,
    "search_query_total_time":5,
    "search_query_execution_max_time":154,
    "search_query_execution_avg_time":2,
    "object_loading_total_time":1,
    "object_loading_execution_max_time":1,
    "object_loading_execution_avg_time":1,
    "objects_loaded_count":20,
    "search_query_execution_max_time_query_string": "FROM entity"
}

search_query_execution_count Provides the number of queries that have been run.
search_query_total_time Provides the total time spent on queries.
search_query_execution_max_time Provides the maximum time taken for a query.
search_query_execution_avg_time Provides the average query time.
object_loading_total_time Provides the total time spent loading objects from the cache after query execution.
object_loading_execution_max_time Provides the maximum time spent loading objects execution.
object_loading_execution_avg_time Provides the average time spent loading objects execution.
objects_loaded_count Provides the count of objects loaded.
search_query_execution_max_time_query_string Provides the slowest query executed.

Clearing Query Statistics (Deprecated)

Reset runtime statistics with POST requests and the ?action=clear parameter.

POST /rest/v2/caches/{cacheName}/search/query/stats?action=clear

2.1.31. Cross-Site Operations with Caches

Perform cross-site replication operations with the Infinispan REST API.

See Cross Site replication for more details about this feature.

Getting status of all backup locations

Retrieve the status of all backup locations with GET requests.

GET /rest/v2/caches/{cacheName}/x-site/backups/

Infinispan responds with the status of each backup location in JSON format, as in the following example:

{
  "NYC": {
    "status": "online"
  },
  "LON": {
    "status": "mixed",
    "online": [
      "NodeA"
    ],
    "offline": [
      "NodeB"
    ]
  }
}

Table 16. Returned Status
Value	Description
`online`	All nodes in the local cluster have a cross-site view with the backup location.
`offline`	No nodes in the local cluster have a cross-site view with the backup location.
`mixed`	Some nodes in the local cluster have a cross-site view with the backup location, other nodes in the local cluster do not have a cross-site view. The response indicates status for each node.

Getting status of specific backup locations

Retrieve the status of a backup location with GET requests.

GET /rest/v2/caches/{cacheName}/x-site/backups/{siteName}

Infinispan responds with the status of each node in the site in JSON format, as in the following example:

{
  "NodeA":"offline",
  "NodeB":"online"
}

Table 17. Returned Status
Value	Description
`online`	The node is online.
`offline`	The node is offline.
`failed`	Not possible to retrieve status. The remote cache could be shutting down or a network error occurred during the request.

Taking backup locations offline

Take backup locations offline with POST requests and the ?action=take-offline parameter.

POST /rest/v2/caches/{cacheName}/x-site/backups/{siteName}?action=take-offline

Bringing backup locations online

Bring backup locations online with the ?action=bring-online parameter.

POST /rest/v2/caches/{cacheName}/x-site/backups/{siteName}?action=bring-online

Pushing state to backup locations

Push cache state to a backup location with the ?action=start-push-state parameter.

POST /rest/v2/caches/{cacheName}/x-site/backups/{siteName}?action=start-push-state

Canceling state transfer

Cancel state transfer operations with the ?action=cancel-push-state parameter.

POST /rest/v2/caches/{cacheName}/x-site/backups/{siteName}?action=cancel-push-state

Getting state transfer status

Retrieve status of state transfer operations with the ?action=push-state-status parameter.

GET /rest/v2/caches/{cacheName}/x-site/backups?action=push-state-status

Infinispan responds with the status of state transfer for each backup location in JSON format, as in the following example:

{
   "NYC":"CANCELED",
   "LON":"OK"
}

Table 18. Returned status
Value	Description
`SENDING`	State transfer to the backup location is in progress.
`OK`	State transfer completed successfully.
`ERROR`	An error occurred with state transfer. Check log files.
`CANCELLING`	State transfer cancellation is in progress.

Clearing state transfer status

Clear state transfer status for sending sites with the ?action=clear-push-state-status parameter.

POST /rest/v2/caches/{cacheName}/x-site/local?action=clear-push-state-status

Modifying take offline conditions

Sites go offline if certain conditions are met. Modify the take offline parameters to control when backup locations automatically go offline.

Procedure

Check configured take offline parameters with GET requests and the take-offline-config parameter.
```
GET /rest/v2/caches/{cacheName}/x-site/backups/{siteName}/take-offline-config
```
The Infinispan response includes after_failures and min_wait fields as follows:
```
{
  "after_failures": 2,
  "min_wait": 1000
}
```
Modify take offline parameters in the body of PUT requests.
```
PUT /rest/v2/caches/{cacheName}/x-site/backups/{siteName}/take-offline-config
```
If the operation successfully completes, the service returns 204 (No Content).

Canceling state transfer from receiving sites

If the connection between two backup locations breaks, you can cancel state transfer on the site that is receiving the push.

Cancel state transfer from a remote site and keep the current state of the local cache with the ?action=cancel-receive-state parameter.

POST /rest/v2/caches/{cacheName}/x-site/backups/{siteName}?action=cancel-receive-state

2.1.32. Rolling Upgrades

Perform rolling upgrades of cache data between Infinispan clusters

Connecting Source Clusters

Connect a target cluster to the source cluster with:

POST /rest/v2/caches/{cacheName}/rolling-upgrade/source-connection

You must provide a remote-store definition in JSON format as the body:

JSON

{
  "remote-store": {
    "cache": "my-cache",
    "shared": true,
    "raw-values": true,
    "socket-timeout": 60000,
    "protocol-version": "2.9",
    "remote-server": [
      {
        "host": "127.0.0.2",
        "port": 12222
      }
    ],
    "connection-pool": {
      "max-active": 110,
      "exhausted-action": "CREATE_NEW"
    },
    "async-executor": {
      "properties": {
        "name": 4
      }
    },
    "security": {
      "authentication": {
        "server-name": "servername",
        "digest": {
          "username": "username",
          "password": "password",
          "realm": "realm",
          "sasl-mechanism": "DIGEST-MD5"
        }
      },
      "encryption": {
        "protocol": "TLSv1.2",
        "sni-hostname": "snihostname",
        "keystore": {
          "filename": "/path/to/keystore_client.jks",
          "password": "secret",
          "certificate-password": "secret",
          "key-alias": "hotrod",
          "type": "JKS"
        },
        "truststore": {
          "filename": "/path/to/gca.jks",
          "password": "secret",
          "type": "JKS"
        }
      }
    }
  }
}

Several elements are optional such as security, async-executor and connection-pool. The configuration must contain minimally the cache name, the raw-values set to false and the host/ip of the single port in the source cluster. For details about the remote-store configuration, consult the XSD Schema.

If the operation successfully completes, the service returns 204 (No Content). If the target cluster is already connected to the source cluster, it returns status 304 (Not Modified).

Obtaining Source Cluster connection details

To obtain the remote-store definition of a cache, use a GET request:

GET /rest/v2/caches/{cacheName}/rolling-upgrade/source-connection

If the cache was previously connected, it returns the configuration of the associated remote-store in JSON format and status 200 (OK), otherwise a 404 (Not Found) status.

This is not a cluster wide operation, and it only returns the remote-store of the cache in the node where the REST invocation is handled.

Checking if a Cache is connected

To check if a cache have been connected to a remote cluster, use a HEAD request:

HEAD /rest/v2/caches/{cacheName}/rolling-upgrade/source-connection

Returns status 200 (OK) if for all nodes of the cluster, cacheName has a single remote store configured, and 404 (NOT_FOUND) otherwise.

Synchronizing Data

Synchronize data from a source cluster to a target cluster with POST requests and the ?action=sync-data parameter:

POST /rest/v2/caches/{cacheName}?action=sync-data

When the operation completes, Infinispan responds with the total number of entries copied to the target cluster.

Disconnecting Source Clusters

After you synchronize data to target clusters, disconnect from the source cluster with DELETE requests:

DELETE /rest/v2/caches/{cacheName}/rolling-upgrade/source-connection

If the operation successfully completes, the service returns 204 (No Content). It no source was connected, it returns code 304 (Not Modified).

2.2. Creating and Managing Counters

Create, delete, and modify counters via the REST API.

2.2.1. Creating Counters

Create counters with POST requests that include configuration in the payload.

POST /rest/v2/counters/{counterName}

Example Weak Counter

{
    "weak-counter":{
        "initial-value":5,
        "storage":"PERSISTENT",
        "concurrency-level":1
    }
}

Example Strong Counter

{
    "strong-counter":{
        "initial-value":3,
        "storage":"PERSISTENT",
        "upper-bound":5
    }
}

2.2.2. Deleting Counters

Remove specific counters with DELETE requests.

DELETE /rest/v2/counters/{counterName}

2.2.3. Retrieving Counter Configuration

Retrieve configuration for specific counters with GET requests.

GET /rest/v2/counters/{counterName}/config

Infinispan responds with the counter configuration in JSON format.

2.2.4. Getting Counter Values

Retrieve counter values with GET requests.

GET /rest/v2/counters/{counterName}

Table 19. Headers
Header	Required or Optional	Parameter
`Accept`	OPTIONAL	The required format to return the content. Supported formats are application/json and text/plain. JSON is assumed if no header is provided.

2.2.5. Resetting Counters

Restore the initial value of counters without POST requests and the ?action=reset parameter.

POST /rest/v2/counters/{counterName}?action=reset

If the operation successfully completes, the service returns 204 (No Content).

2.2.6. Incrementing Counters

Increment counter values with POST request` and the ?action=increment parameter.

POST /rest/v2/counters/{counterName}?action=increment

WEAK counters never respond after operations and return 204 (No Content).

STRONG counters return 200 (OK) and the current value after each operation.

2.2.7. Adding Deltas to Counters

Add arbitrary values to counters with POST requests that include the ?action=add and delta parameters.

POST /rest/v2/counters/{counterName}?action=add&delta={delta}

WEAK counters never respond after operations and return 204 (No Content).

STRONG counters return 200 (OK) and the current value after each operation.

2.2.8. Decrementing Counter Values

Decrement counter values with POST requests and the ?action=decrement parameter.

POST /rest/v2/counters/{counterName}?action=decrement

WEAK counters never respond after operations and return 204 (No Content).

STRONG counters return 200 (OK) and the current value after each operation.

2.2.9. Performing compareAndSet Operations on Strong Counters

Atomically set values for strong counters with GET requests and the compareAndSet parameter.

POST /rest/v2/counters/{counterName}?action=compareAndSet&expect={expect}&update={update}

Infinispan atomically sets the value to {update} if the current value is {expect}. If the operation is successful, Infinispan returns true.

2.2.10. Performing compareAndSwap Operations on Strong Counters

Atomically set values for strong counters with GET requests and the compareAndSwap parameter.

POST /rest/v2/counters/{counterName}?action=compareAndSwap&expect={expect}&update={update}

Infinispan atomically sets the value to {update} if the current value is {expect}. If the operation is successful, Infinispan returns the previous value in the payload.

2.2.11. Listing Counters

Retrieve a list of counters in Infinispan clusters with GET requests.

GET /rest/v2/counters/

2.3. Working with Protobuf Schemas

Create and manage Protobuf schemas, .proto files, via the Infinispan REST API.

2.3.1. Creating Protobuf Schemas

Create Protobuf schemas across Infinispan clusters with POST requests that include the content of a protobuf file in the payload.

POST /rest/v2/schemas/{schemaName}

If the schema already exists, Infinispan returns HTTP 409 (Conflict). If the schema is not valid, either because of syntax errors, or because some of its dependencies are missing, Infinispan stores the schema and returns the error in the response body.

Infinispan responds with the schema name and any errors.

{
  "name" : "users.proto",
  "error" : {
    "message": "Schema users.proto has errors",
    "cause": "java.lang.IllegalStateException:Syntax error in error.proto at 3:8: unexpected label: messoge"
  }
}

name is the name of the Protobuf schema.
error is null for valid Protobuf schemas. If Infinispan cannot successfully validate the schema, it returns errors.

If the operation successfully completes, the service returns 201 (Created).

2.3.2. Reading Protobuf Schemas

Retrieve Protobuf schema from Infinispan with GET requests.

GET /rest/v2/schemas/{schemaName}

2.3.3. Updating Protobuf Schemas

Modify Protobuf schemas with PUT requests that include the content of a protobuf file in the payload.

When you make changes to the existing Protobuf schema definition, you must either update or rebuild the index schema. If the changes involve modifying the existing fields, then you must rebuild the index. When you add new fields without touching existing schema, you can update the index schema instead of rebuilding it.

PUT /rest/v2/schemas/{schemaName}

If the schema is not valid, either because of syntax errors, or because some of its dependencies are missing, Infinispan updates the schema and returns the error in the response body.

{
  "name" : "users.proto",
  "error" : {
    "message": "Schema users.proto has errors",
    "cause": "java.lang.IllegalStateException:Syntax error in error.proto at 3:8: unexpected label: messoge"
  }
}

name is the name of the Protobuf schema.
error is null for valid Protobuf schemas. If Infinispan cannot successfully validate the schema, it returns errors.

2.3.4. Deleting Protobuf Schemas

Remove Protobuf schemas from Infinispan clusters with DELETE requests.

DELETE /rest/v2/schemas/{schemaName}

If the operation successfully completes, the service returns 204 (No Content).

2.3.5. Listing Protobuf Schemas

List all available Protobuf schemas with GET requests.

GET /rest/v2/schemas/

Infinispan responds with a list of all schemas available on the cluster.

[ {
  "name" : "users.proto",
  "error" : {
    "message": "Schema users.proto has errors",
    "cause": "java.lang.IllegalStateException:Syntax error in error.proto at 3:8: unexpected label: messoge"
  }
}, {
  "name" : "people.proto",
  "error" : null
}]

name is the name of the Protobuf schema.
error is null for valid Protobuf schemas. If Infinispan cannot successfully validate the schema, it returns errors.

2.3.6. Listing Protobuf Types

List all available Protobuf types with GET requests.

GET /rest/v2/schemas?action=types

Infinispan responds with a list of all types available on the cluster.

["org.infinispan.Person", "org.infinispan.Phone"]

2.4. Working with Cache Managers

Interact with Infinispan Cache Managers to get cluster and usage statistics.

2.4.1. Getting Basic Cache Manager Information

Retrieving information about Cache Managers with GET requests.

GET /rest/v2/cache-managers/{cacheManagerName}

Infinispan responds with information in JSON format, as in the following example:

Information about caches with security authorization is available only to users with the specific roles and permissions assigned to them.

{
    "version":"xx.x.x-FINAL",
    "name":"default",
    "coordinator":true,
    "cache_configuration_names":[
        "___protobuf_metadata",
        "cache2",
        "CacheManagerResourceTest",
        "cache1"
    ],
    "cluster_name":"ISPN",
    "physical_addresses":"[127.0.0.1:35770]",
    "coordinator_address":"CacheManagerResourceTest-NodeA-49696",
    "cache_manager_status":"RUNNING",
    "created_cache_count":"3",
    "running_cache_count":"3",
    "node_address":"CacheManagerResourceTest-NodeA-49696",
    "cluster_members":[
        "CacheManagerResourceTest-NodeA-49696",
        "CacheManagerResourceTest-NodeB-28120"
    ],
    "cluster_members_physical_addresses":[
        "127.0.0.1:35770",
        "127.0.0.1:60031"
    ],
    "cluster_size":2,
    "defined_caches":[
        {
            "name":"CacheManagerResourceTest",
            "started":true
        },
        {
            "name":"cache1",
            "started":true
        },
        {
            "name":"___protobuf_metadata",
            "started":true
        },
        {
            "name":"cache2",
            "started":true
        }
    ],
    "local_site": "LON",
    "relay_node": true,
    "relay_nodes_address": [
      "CacheManagerResourceTest-NodeA-49696"
    ],
    "sites_view": [
        "LON",
        "NYC"
    ],
    "rebalancing_enabled": true
}

version contains the Infinispan version
name contains the name of the Cache Manager as defined in the configuration
coordinator is true if the Cache Manager is the coordinator of the cluster
cache_configuration_names contains an array of all caches configurations defined in the Cache Manager that are accessible to the current user
cluster_name contains the name of the cluster as defined in the configuration
physical_addresses contains the physical network addresses associated with the Cache Manager
coordinator_address contains the physical network addresses of the coordinator of the cluster
cache_manager_status the lifecycle status of the Cache Manager. For possible values, check the org.infinispan.lifecycle.ComponentStatus documentation
created_cache_count number of created caches, excludes all internal and private caches
running_cache_count number of created caches that are running
node_address contains the logical address of the Cache Manager
cluster_members and cluster_members_physical_addresses an array of logical and physical addresses of the members of the cluster
cluster_size number of members in the cluster
defined_caches A list of all caches defined in the Cache Manager, excluding private caches but including internal caches that are accessible
local_site The name of the local site.
If cross-site replication is not configured, Infinispan returns "local".
relay_node is true if the node handles RELAY messages between clusters.
relay_nodes_address is an array of logical addresses for relay nodes.
sites_view The list of sites that participate in cross-site replication.
If cross-site replication is not configured, Infinispan returns an empty list.
rebalancing_enabled is true if rebalancing is enabled. Fetching this property might fail on the server. In that case the property won’t be present in the payload.

2.4.2. Getting Cluster Health

Retrieve health information for Infinispan clusters with GET requests.

GET /rest/v2/cache-managers/{cacheManagerName}/health

Infinispan responds with cluster health information in JSON format, as in the following example:

{
    "cluster_health":{
        "cluster_name":"ISPN",
        "health_status":"HEALTHY",
        "number_of_nodes":2,
        "node_names":[
            "NodeA-36229",
            "NodeB-28703"
        ]
    },
    "cache_health":[
        {
            "status":"HEALTHY",
            "cache_name":"___protobuf_metadata"
        },
        {
            "status":"HEALTHY",
            "cache_name":"cache2"
        },
        {
            "status":"HEALTHY",
            "cache_name":"mycache"
        },
        {
            "status":"HEALTHY",
            "cache_name":"cache1"
        }
    ]
}

cluster_health contains the health of the cluster
- cluster_name specifies the name of the cluster as defined in the configuration.
- health_status provides one of the following:
  - DEGRADED indicates at least one of the caches is in degraded mode.
  - HEALTHY_REBALANCING indicates at least one cache is in the rebalancing state.
  - HEALTHY indicates all cache instances in the cluster are operating as expected.
  - FAILED indicates the cache failed to start with the provided configuration.
- number_of_nodes displays the total number of cluster members. Returns a value of 0 for non-clustered (standalone) servers.
- node_names is an array of all cluster members. Empty for standalone servers.
cache_health contains health information per-cache
- status HEALTHY, DEGRADED, HEALTHY_REBALANCING or FAILED
- cache_name the name of the cache as defined in the configuration.

2.4.3. Getting Cache Manager Health Status

Retrieve the health status of Cache Managers with GET requests that do not require authentication.

GET /rest/v2/cache-managers/{cacheManagerName}/health/status

Infinispan responds with one of the following in text/plain format:

HEALTHY
HEALTHY_REBALANCING
DEGRADED
FAILED

2.4.4. Checking REST Endpoint Availability

Verify Infinispan server REST endpoint availability with HEAD requests.

HEAD /rest/v2/cache-managers/{cacheManagerName}/health

If you receive a successful response code then the Infinispan REST server is running and serving requests.

2.4.5. Obtaining Global Configuration for Cache Managers

Retrieve global configuration for Cache Managers with GET requests.

GET /rest/v2/cache-managers/{cacheManagerName}/config

Table 20. Headers
Header	Required or Optional	Parameter
`Accept`	OPTIONAL	The required format to return the content. Supported formats are application/json and application/xml. JSON is assumed if no header is provided.

Table 21. Request parameters
Parameter	Required or Optional	Description
`pretty`	OPTIONAL	If `true` returns formatted content, including additional spacing and line separators which improve readability but increase payload size. The default is `false`.

Reference

GlobalConfiguration

2.4.6. Obtaining Configuration for All Caches

Retrieve the configuration for all caches with GET requests.

GET /rest/v2/cache-managers/{cacheManagerName}/cache-configs

Infinispan responds with JSON arrays that contain each cache and cache configuration, as in the following example:

[
  {
      "name":"cache1",
      "configuration":{
          "distributed-cache":{
              "mode":"SYNC",
              "partition-handling":{
                  "when-split":"DENY_READ_WRITES"
              },
              "statistics":true
          }
      }
  },
  {
      "name":"cache2",
      "configuration":{
          "distributed-cache":{
              "mode":"SYNC",
              "transaction":{
                  "mode":"NONE"
              }
          }
      }
  }
]

Table 22. Request parameters
Parameter	Required or Optional	Description
`pretty`	OPTIONAL	If `true` returns formatted content, including additional spacing and line separators which improve readability but increase payload size. The default is `false`.

2.4.7. Listing Available Cache Templates

Retrieve all available Infinispan cache templates with GET requests.

GET /rest/v2/cache-managers/{cacheManagerName}/cache-configs/templates

See Creating Caches with Templates.

Table 23. Request parameters
Parameter	Required or Optional	Description
`pretty`	OPTIONAL	If `true` returns formatted content, including additional spacing and line separators which improve readability but increase payload size. The default is `false`.

2.4.8. Obtaining Cache Status and Information

Retrieve a list of all available caches for a Cache Manager, along with cache statuses and details, with GET requests.

GET /rest/v2/cache-managers/{cacheManagerName}/caches

Infinispan responds with JSON arrays that lists and describes each available cache, as in the following example:

[ {
  "status" : "RUNNING",
  "name" : "cache1",
  "type" : "local-cache",
  "simple_cache" : false,
  "transactional" : false,
  "persistent" : false,
  "bounded": false,
  "secured": false,
  "indexed": true,
  "has_remote_backup": true,
  "health":"HEALTHY",
  "rebalancing_enabled": true
}, {
  "status" : "RUNNING",
  "name" : "cache2",
  "type" : "distributed-cache",
  "simple_cache" : false,
  "transactional" : true,
  "persistent" : false,
  "bounded": false,
  "secured": false,
  "indexed": true,
  "has_remote_backup": true,
  "health":"HEALTHY",
  "rebalancing_enabled": false
}]

Table 24. Request parameters
Parameter	Required or Optional	Description
`pretty`	OPTIONAL	If `true` returns formatted content, including additional spacing and line separators which improve readability but increase payload size. The default is `false`.

2.4.9. Getting Cache Manager Statistics

Retrieve the statistics for Cache Managers with GET requests.

GET /rest/v2/cache-managers/{cacheManagerName}/stats

Infinispan responds with Cache Manager statistics in JSON format, as in the following example:

{
    "statistics_enabled":true,
    "read_write_ratio":0.0,
    "time_since_start":1,
    "time_since_reset":1,
    "number_of_entries":0,
    "total_number_of_entries":0,
    "off_heap_memory_used":0,
    "data_memory_used":0,
    "misses":0,
    "remove_hits":0,
    "remove_misses":0,
    "evictions":0,
    "average_read_time":0,
    "average_read_time_nanos":0,
    "average_write_time":0,
    "average_write_time_nanos":0,
    "average_remove_time":0,
    "average_remove_time_nanos":0,
    "required_minimum_number_of_nodes":1,
    "hits":0,
    "stores":0,
    "current_number_of_entries_in_memory":0,
    "hit_ratio":0.0,
    "retrievals":0
}

statistics_enabled is true if statistics collection is enabled for the Cache Manager.
read_write_ratio displays the read/write ratio across all caches.
time_since_start shows the time, in seconds, since the Cache Manager started.
time_since_reset shows the number of seconds since the Cache Manager statistics were last reset.
number_of_entries shows the total number of entries currently in all caches from the Cache Manager. This statistic returns entries in the local cache instances only.
total_number_of_entries shows the number of store operations performed across all caches for the Cache Manager.
off_heap_memory_used shows the amount, in bytes[], of off-heap memory used by this cache container.
data_memory_used shows the amount, in bytes[], that the current eviction algorithm estimates is in use for data across all caches. Returns 0 if eviction is not enabled.
misses shows the number of get() misses across all caches.
remove_hits shows the number of removal hits across all caches.
remove_misses shows the number of removal misses across all caches.
evictions shows the number of evictions across all caches.
average_read_time shows the average number of milliseconds taken for get() operations across all caches.
average_read_time_nanos same as average_read_time but in nanoseconds.
average_remove_time shows the average number of milliseconds for remove() operations across all caches.
average_remove_time_nanos same as average_remove_time but in nanoseconds.
required_minimum_number_of_nodes shows the required minimum number of nodes to guarantee data consistency.
hits provides the number of get() hits across all caches.
stores provides the number of put() operations across all caches.
current_number_of_entries_in_memory shows the total number of entries currently in all caches, excluding passivated entries.
hit_ratio provides the total percentage hit/(hit+miss) ratio for all caches.
retrievals shows the total number of get() operations.

2.4.10. Shutdown all container caches

Shut down the Infinispan container on the server with POST requests.

POST /rest/v2/container?action=shutdown

Infinispan responds with 204 (No Content) and then shutdowns all caches in the container. The servers remain running with active endpoints and clustering, however REST calls to container resources will result in a 503 Service Unavailable response.

This method is primarily intended for use by the Infinispan Operator. The expectation is that the Server processes will be manually terminated shortly after this endpoint is invoked. Once this method has been called, it’s not possible to restart the container state.

2.4.11. Enabling rebalancing for all caches

Turn on automatic rebalancing for all caches.

POST /rest/v2/cache-managers/{cacheManagerName}?action=enable-rebalancing

2.4.12. Disabling rebalancing for all caches

Turn off automatic rebalancing for all caches.

POST /rest/v2/cache-managers/{cacheManagerName}?action=disable-rebalancing

2.4.13. Backing Up Infinispan Cache Managers

Create backup archives, application/zip, that contain resources (caches, cache templates, counters, Protobuf schemas, server tasks, and so on) currently stored in the Cache Manager.

POST /rest/v2/cache-managers/{cacheManagerName}/backups/{backupName}

If a backup with the same name already exists, the service responds with 409 (Conflict). If the directory parameter is not valid, the service returns 400 (Bad Request). A 202 response indicates that the backup request is accepted for processing.

Optionally include a JSON payload with your request that contains parameters for the backup operation, as follows:

Table 25. JSON Parameters
Key	Required or Optional	Value
`directory`	OPTIONAL	Specifies a location on the server to create and store the backup archive.
`resources`	OPTIONAL	Specifies the resources to back up, in JSON format. The default is to back up all resources. If you specify one or more resources, then Infinispan backs up only those resources. See the Resource Parameters table for more information.

Table 26. Resource Parameters
Key	Required or Optional	Value
`caches`	OPTIONAL	Specifies either an array of cache names to back up or `*` for all caches.
`cache-configs`	OPTIONAL	Specifies either an array of cache templates to back up or `*` for all templates.
`counters`	OPTIONAL	Defines either an array of counter names to back up or `*` for all counters.
`proto-schemas`	OPTIONAL	Defines either an array of Protobuf schema names to back up or `*` for all schemas.
`process`	OPTIONAL	Specifies either an array of server tasks to back up or `*` for all tasks.

The following example creates a backup archive with all counters and caches named [cache1,cache2] in a specified directory:

{
  "directory": "/path/accessible/to/the/server",
  "resources": {
    "caches": ["cache1", "cache2"],
    "counters": ["*"]
  }
}

2.4.14. Listing Backups

Retrieve the names of all backup operations that are in progress, completed, or failed.

GET /rest/v2/cache-managers/{cacheManagerName}/backups

Infinispan responds with an Array of all backup names as in the following example:

["backup1", "backup2"]

2.4.15. Checking Backup Availability

Verify that a backup operation is complete.

HEAD /rest/v2/cache-managers/{cacheManagerName}/backups/{backupName}

A 200 response indicates the backup archive is available. A 202 response indicates the backup operation is in progress.

2.4.16. Downloading Backup Archives

Download backup archives from the server.

GET /rest/v2/cache-managers/{cacheManagerName}/backups/{backupName}

A 200 response indicates the backup archive is available. A 202 response indicates the backup operation is in progress.

2.4.17. Deleting Backup Archives

Remove backup archives from the server.

DELETE /rest/v2/cache-managers/{cacheManagerName}/backups/{backupName}

A 204 response indicates that the backup archive is deleted. A 202 response indicates that the backup operation is in progress but will be deleted when the operation completes.

2.4.18. Restoring Infinispan Resources from Backup Archives

Restore Infinispan resources from backup archives. The provided {restoreName} is for tracking restore progress, and is independent of the name of backup file being restored.

You can restore resources only if the container name in the backup archive matches {cacheManagerName}.

POST /rest/v2/cache-managers/{cacheManagerName}/restores/{restoreName}

A 202 response indicates that the restore request has been accepted for processing.

Restoring from Backup Archives on Infinispan Server

Use the application/json content type with your POST request to back up from an archive that is available on the server.

Table 27. JSON Parameters
Key	Required or Optional	Value
`location`	REQUIRED	Specifies the path of the backup archive to restore.
`resources`	OPTIONAL	Specifies the resources to restore, in JSON format. The default is to restore all resources. If you specify one or more resources, then Infinispan restores only those resources. See the Resource Parameters table for more information.

Table 28. Resource Parameters
Key	Required or Optional	Value
`caches`	OPTIONAL	Specifies either an array of cache names to back up or `*` for all caches.
`cache-configs`	OPTIONAL	Specifies either an array of cache templates to back up or `*` for all templates.
`counters`	OPTIONAL	Defines either an array of counter names to back up or `*` for all counters.
`proto-schemas`	OPTIONAL	Defines either an array of Protobuf schema names to back up or `*` for all schemas.
`process`	OPTIONAL	Specifies either an array of server tasks to back up or `*` for all tasks.

The following example restores all counters from a backup archive on the server:

{
  "location": "/path/accessible/to/the/server/backup-to-restore.zip",
  "resources": {
    "counters": ["*"]
  }
}

Restoring from Local Backup Archives

Use the multipart/form-data content type with your POST request to upload a local backup archive to the server.

Table 29. Form Data
Parameter	Content-Type	Required or Optional	Value
`backup`	`application/zip`	REQUIRED	Specifies the bytes of the backup archive to restore.
`resources`	`application/json`, `text/plain`	OPTIONAL	Defines a JSON object of request parameters.

Example Request

Content-Type: multipart/form-data; boundary=5ec9bc07-f069-4662-a535-46069afeda32
Content-Length: 7721

--5ec9bc07-f069-4662-a535-46069afeda32
Content-Disposition: form-data; name="resources"
Content-Length: 23

{"scripts":["test.js"]}
--5ec9bc07-f069-4662-a535-46069afeda32
Content-Disposition: form-data; name="backup"; filename="testManagerRestoreParameters.zip"
Content-Type: application/zip
Content-Length: 7353

<zip-bytes>
--5ec9bc07-f069-4662-a535-46069afeda32--

2.4.19. Listing Restores

Retrieve the names of all restore requests that are in progress, completed, or failed.

GET /rest/v2/cache-managers/{cacheManagerName}/restores

Infinispan responds with an Array of all restore names as in the following example:

["restore1", "restore2"]

2.4.20. Checking Restore Progress

Verify that a restore operation is complete.

HEAD /rest/v2/cache-managers/{cacheManagerName}/restores/{restoreName}

A 201 (Created) response indicates the restore operation is completed. A 202 (Accepted) response indicates the backup operation is in progress.

2.4.21. Deleting Restore Metadata

Remove metadata for restore requests from the server. This action removes all metadata associated with restore requests but does not delete any restored content. If you delete the request metadata, you can use the request name to perform subsequent restore operations.

DELETE /rest/v2/cache-managers/{cacheManagerName}/restores/{restoreName}

A 204 (No Content) response indicates that the restore metadata is deleted. A 202 (Accepted) response indicates that the restore operation is in progress and will be deleted when the operation completes.

2.4.22. Listening to container configuration events

Receive events about configuration changes using Server-Sent Events. The event value will be one of create-cache, remove-cache, update-cache, create-template, remove-template or update-template. The data value will contain the declarative configuration of the entity that has been created. Remove events will only contain the name of the removed entity.

GET /rest/v2/container/config?action=listen

Table 30. Headers
Header	Required or Optional	Parameter
`Accept`	OPTIONAL	Sets the required format to return content. Supported formats are `application/yaml`, `application/json` and `application/xml`. The default is `application/yaml`. See Accept for more information.

Table 31. Request parameters
Parameter	Required or Optional	Description
`includeCurrentState`	OPTIONAL	If `true`, the results include the state of the existing configuration in addition to the changes. If set to `false`, the request returns only the changes. The default value is `false`.
`pretty`	OPTIONAL	If `true` returns formatted content, including additional spacing and line separators which improve readability but increase payload size. The default is `false`.

2.4.23. Listening to container events

Receive events from the container using Server-Sent Events. The emitted events come from logged information, so each event contains an identifier associated with the message. The event value will be lifecycle-event. The data has the logged information, which includes the message, category, level, timestamp, owner, context, and scope, some of which may be empty. Currently, we expose only LIFECYCLE events.

GET /rest/v2/container?action=listen

Table 32. Headers
Header	Required or Optional	Parameter
`Accept`	OPTIONAL	Sets the required format to return content. Supported formats are `application/yaml`, `application/json` and `application/xml`. The default is `application/yaml`. See Accept for more information.

Table 33. Request parameters
Parameter	Required or Optional	Description
`includeCurrentState`	OPTIONAL	If `true`, the results include the state of the existing configuration in addition to the changes. If set to `false`, the request returns only the changes. The default value is `false`.
`pretty`	OPTIONAL	If `true` returns formatted content, including additional spacing and line separators which improve readability but increase payload size. The default is `false`.

2.4.24. Cross-Site Operations with Cache Managers

Perform cross-site operations with Cache Managers to apply the operations to all caches.

Getting status of backup locations

Retrieve the status of all backup locations from Cache Managers with GET requests.

GET /rest/v2/cache-managers/{cacheManagerName}/x-site/backups/

Infinispan responds with status in JSON format, as in the following example:

{
   "SFO-3":{
      "status":"online"
   },
   "NYC-2":{
      "status":"mixed",
      "online":[
         "CACHE_1"
      ],
      "offline":[
         "CACHE_2"
      ],
      "mixed": [
         "CACHE_3"
      ]
   }
}

Table 34. Returned status
Value	Description
`online`	All nodes in the local cluster have a cross-site view with the backup location.
`offline`	No nodes in the local cluster have a cross-site view with the backup location.
`mixed`	Some nodes in the local cluster have a cross-site view with the backup location, other nodes in the local cluster do not have a cross-site view. The response indicates status for each node.

GET /rest/v2/cache-managers/{cacheManagerName}/x-site/backups/{site}

Returns the status for a single backup location.

Taking backup locations offline

Take backup locations offline with the ?action=take-offline parameter.

POST /rest/v2/cache-managers/{cacheManagerName}/x-site/backups/{siteName}?action=take-offline

Bringing backup locations online

Bring backup locations online with the ?action=bring-online parameter.

POST /rest/v2/cache-managers/{cacheManagerName}/x-site/backups/{siteName}?action=bring-online

Retrieving the state transfer mode

Check the state transfer mode with GET requests.

GET /rest/v2/caches/{cacheName}/x-site/backups/{site}/state-transfer-mode

Setting the state transfer mode

Configure the state transfer mode with the ?action=set parameter.

POST /rest/v2/caches/{cacheName}/x-site/backups/{site}/state-transfer-mode?action=set&mode={mode}

Starting state transfer

Push state of all caches to remote sites with the ?action=start-push-state parameter.

POST /rest/v2/cache-managers/{cacheManagerName}/x-site/backups/{siteName}?action=start-push-state

Canceling state transfer

Cancel ongoing state transfer operations with the ?action=cancel-push-state parameter.

POST /rest/v2/cache-managers/{cacheManagerName}/x-site/backups/{siteName}?action=cancel-push-state

2.5. Working with Infinispan Servers

Monitor and manage Infinispan server instances.

2.5.1. Retrieving Basic Server Information

View basic information about Infinispan Servers with GET requests.

GET /rest/v2/server

Infinispan responds with the server name, codename, and version in JSON format as in the following example:

{
  "version":"Infinispan 'Codename' xx.x.x.Final"
}

2.5.2. Getting Cache Managers

Retrieve lists of Cache Managers for Infinispan Servers with GET requests.

GET /rest/v2/server/cache-managers

Infinispan responds with an array of the Cache Manager names configured for the server.

Infinispan currently supports one Cache Manager per server only.

2.5.3. Adding Caches to Ignore Lists

Configure Infinispan to temporarily exclude specific caches from client requests. Send empty POST requests that include the names of the Cache Manager name and the cache.

POST /rest/v2/server/ignored-caches/{cache-manager}/{cache}

Infinispan responds with 204 (No Content) if the cache is successfully added to the ignore list or 404 (Not Found) if the cache or Cache Manager are not found.

Infinispan currently supports one Cache Manager per server only. For future compatibility you must provide the Cache Manager name in the requests.

2.5.4. Removing Caches from Ignore Lists

Remove caches from the ignore list with DELETE requests.

DELETE /rest/v2/server/ignored-caches/{cache-manager}/{cache}

Infinispan responds with 204 (No Content) if the cache is successfully removed from ignore list or 404 (Not Found) if the cache or Cache Manager are not found.

2.5.5. Confirming Ignored Caches

Confirm that caches are ignored with GET requests.

GET /rest/v2/server/ignored-caches/{cache-manager}

2.5.6. Obtaining Server Configuration

Retrieve Infinispan Server configurations with GET requests.

GET /rest/v2/server/config

Infinispan responds with the configuration in JSON format, as follows:

{
    "server":{
        "interfaces":{
            "interface":{
                "name":"public",
                "inet-address":{
                    "value":"127.0.0.1"
                }
            }
        },
        "socket-bindings":{
            "port-offset":0,
            "default-interface":"public",
            "socket-binding":[
                {
                    "name":"memcached",
                    "port":11221,
                    "interface":"memcached"
                }
            ]
        },
        "security":{
            "security-realms":{
                "security-realm":{
                    "name":"default"
                }
            }
        },
        "endpoints":{
            "socket-binding":"default",
            "security-realm":"default",
            "hotrod-connector":{
                "name":"hotrod"
            },
            "rest-connector":{
                "name":"rest"
            }
        }
    }
}

2.5.7. Getting Environment Variables

Retrieve all environment variables for Infinispan Servers with GET requests.

GET /rest/v2/server/env

2.5.8. Getting JVM Memory Details

Retrieve JVM memory usage information for Infinispan Servers with GET requests.

GET /rest/v2/server/memory

Infinispan responds with heap and non-heap memory statistics, direct memory usage, and information about memory pools and garbage collection in JSON format.

2.5.9. Getting JVM Heap Dumps

Generate JVM heap dumps for Infinispan Servers with POST requests.

POST /rest/v2/server/memory?action=heap-dump[&live=true|false]

Infinispan generates a heap dump file in HPROF format in the server data directory and responds with the full path of the file in JSON format.

2.5.10. Getting JVM Thread Dumps

Retrieve the current thread dump for the JVM with GET requests.

GET /rest/v2/server/threads

Infinispan responds with the current thread dump in text/plain format.

2.5.11. Getting Diagnostic Reports for Infinispan Servers

Retrieve aggregated reports for Infinispan Servers with GET requests.

GET /rest/v2/server/report

Infinispan responds with a tar.gz archive that contains an aggregated report with diagnostic information about both the Infinispan Server and the host. The report provides details about CPU, memory, open files, network sockets and routing, threads, in addition to configuration and log files.

2.5.12. Stopping Infinispan Servers

Stop Infinispan Servers with POST requests.

POST /rest/v2/server?action=stop

Infinispan responds with 204 (No Content) and then stops running.

2.6. Working with Infinispan Clusters

Monitor and perform administrative tasks on Infinispan clusters.

2.6.1. Stopping Infinispan Clusters

Shut down entire Infinispan clusters with POST requests.

POST /rest/v2/cluster?action=stop

Infinispan responds with 204 (No Content) and then performs an orderly shutdown of the entire cluster.

2.6.2. Stopping Specific Infinispan Servers in Clusters

Shut down one or more specific servers in Infinispan clusters with GET requests and the ?action=stop&server parameter.

POST /rest/v2/cluster?action=stop&server={server1_host}&server={server2_host}

Infinispan responds with 204 (No Content).

2.6.3. Backing Up Infinispan Clusters

Create backup archives, application/zip, that contain resources (caches, templates, counters, Protobuf schemas, server tasks, and so on) currently stored in the cache container for the cluster.

POST /rest/v2/cluster/backups/{backupName}

Optionally include a JSON payload with your request that contains parameters for the backup operation, as follows:

Table 35. JSON Parameters
Key	Required or Optional	Value
`directory`	OPTIONAL	Specifies a location on the server to create and store the backup archive.

If the backup operation successfully completes, the service returns 202 (Accepted). If a backup with the same name already exists, the service returns 409 (Conflict). If the directory parameter is not valid, the service returns 400 (Bad Request).

2.6.4. Listing Backups

Retrieve the names of all backup operations that are in progress, completed, or failed.

GET /rest/v2/cluster/backups

Infinispan responds with an Array of all backup names as in the following example:

["backup1", "backup2"]

2.6.5. Checking Backup Availability

Verify that a backup operation is complete. A 200 response indicates the backup archive is available. A 202 response indicates the backup operation is in progress.

HEAD /rest/v2/cluster/backups/{backupName}

2.6.6. Downloading Backup Archives

Download backup archives from the server. A 200 response indicates the backup archive is available. A 202 response indicates the backup operation is in progress.

GET /rest/v2/cluster/backups/{backupName}

2.6.7. Deleting Backup Archives

Remove backup archives from the server. A 204 response indicates that the backup archive is deleted. A 202 response indicates that the backup operation is in progress but will be deleted when the operation completes.

DELETE /rest/v2/cluster/backups/{backupName}

2.6.8. Restoring Infinispan Cluster Resources

Apply resources in a backup archive to restore Infinispan clusters. The provided {restoreName} is for tracking restore progress, and is independent of the name of backup file being restored.

You can restore resources only if the container name in the backup archive matches the container name for the cluster.

POST /rest/v2/cluster/restores/{restoreName}

A 202 response indicates that the restore request is accepted for processing.

Restoring from Backup Archives on Infinispan Server

Use the application/json content type with your POST request to back up from an archive that is available on the server.

Table 36. JSON Parameters
Key	Required or Optional	Value
`location`	REQUIRED	Specifies the path of the backup archive to restore.
`resources`	OPTIONAL	Specifies the resources to restore, in JSON format. The default is to restore all resources. If you specify one or more resources, then Infinispan restores only those resources. See the Resource Parameters table for more information.

Table 37. Resource Parameters
Key	Required or Optional	Value
`caches`	OPTIONAL	Specifies either an array of cache names to back up or `*` for all caches.
`cache-configs`	OPTIONAL	Specifies either an array of cache templates to back up or `*` for all templates.
`counters`	OPTIONAL	Defines either an array of counter names to back up or `*` for all counters.
`proto-schemas`	OPTIONAL	Defines either an array of Protobuf schema names to back up or `*` for all schemas.
`process`	OPTIONAL	Specifies either an array of server tasks to back up or `*` for all tasks.

The following example restores all counters from a backup archive on the server:

{
  "location": "/path/accessible/to/the/server/backup-to-restore.zip",
  "resources": {
    "counters": ["*"]
  }
}

Restoring from Local Backup Archives

Use the multipart/form-data content type with your POST request to upload a local backup archive to the server.

Table 38. Form Data
Parameter	Content-Type	Required or Optional	Value
`backup`	`application/zip`	REQUIRED	Specifies the bytes of the backup archive to restore.

Example Request

Content-Type: multipart/form-data; boundary=5ec9bc07-f069-4662-a535-46069afeda32
Content-Length: 7798

--5ec9bc07-f069-4662-a535-46069afeda32
Content-Disposition: form-data; name="backup"; filename="testManagerRestoreParameters.zip"
Content-Type: application/zip
Content-Length: 7353

<zip-bytes>
--5ec9bc07-f069-4662-a535-46069afeda32--

2.6.9. Listing Restores

Retrieve the names of all restore requests that are in progress, completed, or failed.

GET /rest/v2/cluster/restores

Infinispan responds with an Array of all restore names as in the following example:

["restore1", "restore2"]

2.6.10. Checking Restore Progress

Verify that a restore operation is complete.

HEAD /rest/v2/cluster/restores/{restoreName}

A 201 (Created) response indicates the restore operation is completed. A 202 response indicates the backup operation is in progress.

2.6.11. Deleting Restore Metadata

DELETE /rest/v2/cluster/restores/{restoreName}

A 204 response indicates that the restore metadata is deleted. A 202 response indicates that the restore operation is in progress and will be deleted when the operation completes.

2.6.12. Checking Cluster Distribution

Retrieve the distribution details about all servers in the Infinispan cluster.

GET /rest/v2/cluster?action=distribution

Returns a JSON array of each Infinispan server statistics in the cluster with the format:

[
  {
    "node_name": "NodeA",
    "node_addresses": [
      "127.0.0.1:39313"
    ],
    "memory_available": 466180016,
    "memory_used": 56010832
  },
  {
    "node_name": "NodeB",
    "node_addresses": [
      "127.0.0.1:47477"
    ],
    "memory_available": 467548568,
    "memory_used": 54642280
  }
]

Each element in the array represents an Infinispan node. If the statistics collection is disabled, information about memory usage values is -1. The properties are:

node_name is the node name.
node_addresses is a list with all the node’s physical addresses.
memory_available the node available memory in bytes.
memory_used the node used memory in bytes.

2.7. Infinispan Server logging configuration

View and modify the logging configuration on Infinispan clusters at runtime.

2.7.1. Listing the logging appenders

View a list of all configured appenders with GET requests.

GET /rest/v2/logging/appenders

Infinispan responds with a list of appenders in JSON format as in the following example:

{
  "STDOUT" : {
    "name" : "STDOUT"
  },
  "JSON-FILE" : {
    "name" : "JSON-FILE"
  },
  "HR-ACCESS-FILE" : {
    "name" : "HR-ACCESS-FILE"
  },
  "FILE" : {
    "name" : "FILE"
  },
  "REST-ACCESS-FILE" : {
    "name" : "REST-ACCESS-FILE"
  }
}

2.7.2. Listing the loggers

View a list of all configured loggers with GET requests.

GET /rest/v2/logging/loggers

Infinispan responds with a list of loggers in JSON format as in the following example:

[ {
  "name" : "",
  "level" : "INFO",
  "appenders" : [ "STDOUT", "FILE" ]
}, {
  "name" : "org.infinispan.HOTROD_ACCESS_LOG",
  "level" : "INFO",
  "appenders" : [ "HR-ACCESS-FILE" ]
}, {
  "name" : "com.arjuna",
  "level" : "WARN",
  "appenders" : [ ]
}, {
  "name" : "org.infinispan.REST_ACCESS_LOG",
  "level" : "INFO",
  "appenders" : [ "REST-ACCESS-FILE" ]
} ]

2.7.3. Creating/modifying a logger

Create a new logger or modify an existing one with PUT requests.

PUT /rest/v2/logging/loggers/{loggerName}?level={level}&appender={appender}&appender={appender}...

Infinispan sets the level of the logger identified by {loggerName} to {level}. Optionally, it is possible to set one or more appenders for the logger. If no appenders are specified, those specified in the root logger will be used.

If the operation successfully completes, the service returns 204 (No Content).

2.7.4. Removing a logger

Remove an existing logger with DELETE requests.

DELETE /rest/v2/logging/loggers/{loggerName}

Infinispan removes the logger identified by {loggerName}, effectively reverting to the use of the root logger configuration.

If operation processed successfully, the service returns a response code 204 (No Content).

2.8. Using Server Tasks

Retrieve, execute, and upload Infinispan server tasks.

2.8.1. Retrieving Server Tasks Information

View information about available server tasks with GET requests.

GET /rest/v2/tasks

Table 39. Request Parameters
Parameter	Required or Optional	Value
`type`	OPTIONAL	`user`: will exclude internal (admin) tasks from the results

Infinispan responds with a list of available tasks. The list includes the names of tasks, the engines that handle tasks, the named parameters for tasks, the execution modes of tasks, either ONE_NODE or ALL_NODES, and the allowed security role in JSON format, as in the following example:

[
  {
    "name": "SimpleTask",
    "type": "TaskEngine",
    "parameters": [
      "p1",
      "p2"
    ],
    "execution_mode": "ONE_NODE",
    "allowed_role": null
  },
  {
    "name": "RunOnAllNodesTask",
    "type": "TaskEngine",
    "parameters": [
      "p1"
    ],
    "execution_mode": "ALL_NODES",
    "allowed_role": null
  },
  {
    "name": "SecurityAwareTask",
    "type": "TaskEngine",
    "parameters": [],
    "execution_mode": "ONE_NODE",
    "allowed_role": "MyRole"
  }
]

2.8.2. Executing Tasks

Execute tasks with POST requests that include the task name, an optional cache name and required parameters prefixed with param.

POST /rest/v2/tasks/SimpleTask?action=exec&cache=mycache&param.p1=v1&param.p2=v2

Infinispan responds with the task result.

2.8.3. Uploading Script Tasks

Upload script tasks with PUT or POST requests.

Supply the script as the content payload of the request. After Infinispan uploads the script, you can execute it with GET requests.

POST /rest/v2/tasks/taskName

2.8.4. Downloading Script Tasks

Download script tasks with GET requests.

GET /rest/v2/tasks/taskName?action=script

2.9. Working with Infinispan Security

View and modify security information.

2.9.1. Retrieving the ACL of a user

View information about the user’s principals and access-control list.

GET /rest/v2/security/user/acl

Infinispan responds with information about the user who has performed the request. The list includes the principals of the user, and a list of resources and the permissions that user has when accessing them.

{
  "subject": [
    {
      "name": "deployer",
      "type": "NamePrincipal"
    }
  ],
  "global": [
    "READ", "WRITE", "EXEC", "LISTEN", "BULK_READ", "BULK_WRITE", "CREATE", "MONITOR", "ALL_READ", "ALL_WRITE"  ],
  "caches": {
    "___protobuf_metadata": [
      "READ", "WRITE", "EXEC", "LISTEN", "BULK_READ", "BULK_WRITE", "CREATE", "MONITOR", "ALL_READ", "ALL_WRITE"
    ],
    "mycache": [
      "LIFECYCLE", "READ", "WRITE", "EXEC", "LISTEN", "BULK_READ", "BULK_WRITE", "ADMIN", "CREATE", "MONITOR", "ALL_READ", "ALL_WRITE"
    ],
    "___script_cache": [
      "READ", "WRITE", "EXEC", "LISTEN", "BULK_READ", "BULK_WRITE", "CREATE", "MONITOR", "ALL_READ", "ALL_WRITE"
    ]
  }
}

2.9.2. Flushing the ACL cache

Flush the access-control list cache across the cluster.

POST /rest/v2/security/cache?action=flush

2.9.3. Retrieving the available roles

View all the available roles defined in the server.

GET /rest/v2/security/roles

Infinispan responds with a list of available roles. If authorization is enabled, only a user with the ADMIN permission can call this API.

["observer","application","admin","monitor","deployer"]

2.9.4. Retrieving the roles for a principal

View all the roles which map to a principal.

GET /rest/v2/security/roles/some_principal

Infinispan responds with a list of available roles for the specified principal. The principal need not exist in the realm in use.

["observer"]

2.9.5. Granting roles to a principal

Grant one or more new roles to a principal.

PUT /rest/v2/security/roles/some_principal?action=grant&role=role1&role=role2

Table 40. Request Parameters
Parameter	Required or Optional	Value
`role`	REQUIRED	The name of a role

2.9.6. Denying roles to a principal

Remove one or more roles that were previously granted to a principal.

PUT /rest/v2/security/roles/some_principal?action=deny&role=role1&role=role2

Table 41. Request Parameters
Parameter	Required or Optional	Value
`role`	REQUIRED	The name of a role

2.10. Enabling Tracing Propagation

Tracing with Infinispan Server and REST API lets you monitor and analyze the flow of requests and track the execution path across different components.

2.10.1. Enabling tracing propagation between Infinispan Server and REST API

When you enable tracing propagation between the Infinispan Server and REST API, you must configure tracing on both the client side and the server side.

To propagate the OpenTelemetry tracing spans to the Infinispan spans, you must set the trace context on each REST invocation.

Prerequisite

Have tracing enabled on Infinispan Server and remote client side.

Procedure

Extract the current tracing context using the io.opentelemetry.api.trace.propagation.W3CTraceContextPropagator.

The extraction produces a context map that stores trace context information.

Pass the context map in the header of the REST call to ensure that the trace context is preserved.

HashMap<String, String> contextMap = new HashMap<>();

// Inject the request with the *current* Context, which contains our current Span.
W3CTraceContextPropagator.getInstance().inject(Context.current(), contextMap,
(carrier, key, value) -> carrier.put(key, value));

// Pass the context map in the header
RestCacheClient client = restClient.cache(CACHE_NAME);
client.put("aaa", MediaType.TEXT_PLAIN.toString(),RestEntity.create(MediaType.TEXT_PLAIN, "bbb"), contextMap);

The tracing spans that the client application generates are correlated with the dependent spans generated by the Infinispan Server.

Additional resources

3. REST Client Examples

Part of the point of a RESTful service is that you don’t need to have tightly coupled client libraries/bindings. All you need is a HTTP client library. For Java, Apache HTTP Commons Client works just fine (and is used in the integration tests), or you can use java.net API.

3.1. Ruby REST Example

# Shows how to interact with the REST api from ruby.
# No special libraries, just standard net/http
#
# Author: Michael Neale
#
require 'net/http'

uri = URI.parse('http://localhost:11222/rest/v2/caches/default/MyKey')
http = Net::HTTP.new(uri.host, uri.port)

#Create new entry

post = Net::HTTP::Post.new(uri.path, {"Content-Type" => "text/plain"})
post.basic_auth('user','pass')
post.body = "DATA HERE"

resp = http.request(post)

puts "POST response code : " + resp.code

#get it back

get = Net::HTTP::Get.new(uri.path)
get.basic_auth('user','pass')
resp = http.request(get)

puts "GET response code: " + resp.code
puts "GET Body: " + resp.body

#use PUT to overwrite

put = Net::HTTP::Put.new(uri.path, {"Content-Type" => "text/plain"})
put.basic_auth('user','pass')
put.body = "ANOTHER DATA HERE"

resp = http.request(put)

puts "PUT response code : " + resp.code

#and remove...
delete = Net::HTTP::Delete.new(uri.path)
delete.basic_auth('user','pass')

resp = http.request(delete)

puts "DELETE response code : " + resp.code

#Create binary data like this... just the same...

uri = URI.parse('http://localhost:11222/rest/v2/caches/default/MyLogo')
put = Net::HTTP::Put.new(uri.path, {"Content-Type" => "application/octet-stream"})
put.basic_auth('user','pass')
put.body = File.read('./logo.png')

resp = http.request(put)

puts "PUT response code : " + resp.code

#and if you want to do json...
require 'rubygems'
require 'json'

#now for fun, lets do some JSON !
uri = URI.parse('http://localhost:11222/rest/v2/caches/jsonCache/user')
put = Net::HTTP::Put.new(uri.path, {"Content-Type" => "application/json"})
put.basic_auth('user','pass')

data = {:name => "michael", :age => 42 }
put.body = data.to_json

resp = http.request(put)

puts "PUT response code : " + resp.code

get = Net::HTTP::Get.new(uri.path)
get.basic_auth('user','pass')
resp = http.request(get)

puts "GET Body: " + resp.body

3.2. Python 3 REST Example

import urllib.request

# Setup basic auth
base_uri = 'http://localhost:11222/rest/v2/caches/default'
auth_handler = urllib.request.HTTPBasicAuthHandler()
auth_handler.add_password(user='user', passwd='pass', realm='ApplicationRealm', uri=base_uri)
opener = urllib.request.build_opener(auth_handler)
urllib.request.install_opener(opener)

# putting data in
data = "SOME DATA HERE \!"

req = urllib.request.Request(url=base_uri + '/Key', data=data.encode("UTF-8"), method='PUT',
                             headers={"Content-Type": "text/plain"})
with urllib.request.urlopen(req) as f:
    pass

print(f.status)
print(f.reason)

# getting data out
resp = urllib.request.urlopen(base_uri + '/Key')
print(resp.read().decode('utf-8'))

3.3. Java REST Example

package org.infinispan;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Base64;

/**
 * Rest example accessing a cache.
 *
 * @author Samuel Tauil (samuel@redhat.com)
 */
public class RestExample {

    /**
     * Method that puts a String value in cache.
     *
     * @param urlServerAddress URL containing the cache and the key to insert
     * @param value            Text to insert
     * @param user             Used for basic auth
     * @param password         Used for basic auth
     */
    public void putMethod(String urlServerAddress, String value, String user, String password) throws IOException {
        System.out.println("----------------------------------------");
        System.out.println("Executing PUT");
        System.out.println("----------------------------------------");
        URL address = new URL(urlServerAddress);
        System.out.println("executing request " + urlServerAddress);
        HttpURLConnection connection = (HttpURLConnection) address.openConnection();
        System.out.println("Executing put method of value: " + value);
        connection.setRequestMethod("PUT");
        connection.setRequestProperty("Content-Type", "text/plain");
        addAuthorization(connection, user, password);
        connection.setDoOutput(true);

        OutputStreamWriter outputStreamWriter = new OutputStreamWriter(connection.getOutputStream());
        outputStreamWriter.write(value);

        connection.connect();
        outputStreamWriter.flush();
        System.out.println("----------------------------------------");
        System.out.println(connection.getResponseCode() + " " + connection.getResponseMessage());
        System.out.println("----------------------------------------");
        connection.disconnect();
    }

    /**
     * Method that gets a value by a key in url as param value.
     *
     * @param urlServerAddress URL containing the cache and the key to read
     * @param user             Used for basic auth
     * @param password         Used for basic auth
     * @return String value
     */
    public String getMethod(String urlServerAddress, String user, String password) throws IOException {
        String line;
        StringBuilder stringBuilder = new StringBuilder();

        System.out.println("----------------------------------------");
        System.out.println("Executing GET");
        System.out.println("----------------------------------------");

        URL address = new URL(urlServerAddress);
        System.out.println("executing request " + urlServerAddress);

        HttpURLConnection connection = (HttpURLConnection) address.openConnection();
        connection.setRequestMethod("GET");
        connection.setRequestProperty("Content-Type", "text/plain");
        addAuthorization(connection, user, password);
        connection.setDoOutput(true);

        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream()));

        connection.connect();

        while ((line = bufferedReader.readLine()) != null) {
            stringBuilder.append(line).append('\n');
        }

        System.out.println("Executing get method of value: " + stringBuilder.toString());

        System.out.println("----------------------------------------");
        System.out.println(connection.getResponseCode() + " " + connection.getResponseMessage());
        System.out.println("----------------------------------------");

        connection.disconnect();

        return stringBuilder.toString();
    }

    private void addAuthorization(HttpURLConnection connection, String user, String pass) {
        String credentials = user + ":" + pass;
        String basic = Base64.getEncoder().encodeToString(credentials.getBytes());
        connection.setRequestProperty("Authorization", "Basic " + basic);
    }

    /**
     * Main method example.
     */
    public static void main(String[] args) throws IOException {
        RestExample restExample = new RestExample();
        String user = "user";
        String pass = "pass";
        restExample.putMethod("http://localhost:11222/rest/v2/caches/default/1", "Infinispan REST Test", user, pass);
        restExample.getMethod("http://localhost:11222/rest/v2/caches/default/1", user, pass);
    }
}

3.4. `HttpClient` API REST Example

package org.infinispan;

import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.Base64;

/**
 * RestExample class shows you how to access your cache via HttpClient API with Java 11 or later.
 *
 * @author Gustavo Lira (glira@redhat.com)
 */
public class RestExample {
   private static final String SERVER_ADDRESS = "http://localhost:11222";
   private static final String CACHE_URI = "/rest/v2/caches/default";

   /**
    * postMethod create a named cache.
    * @param httpClient HTTP client that sends requests and receives responses
    * @param builder    Encapsulates HTTP requests
    * @throws IOException
    * @throws InterruptedException
    */
   public void postMethod(HttpClient httpClient, HttpRequest.Builder builder) throws IOException, InterruptedException {
      System.out.println("----------------------------------------");
      System.out.println("Executing POST");
      System.out.println("----------------------------------------");

      HttpRequest request = builder.POST(HttpRequest.BodyPublishers.noBody()).build();
      HttpResponse<Void> response = httpClient.send(request, HttpResponse.BodyHandlers.discarding());

      System.out.println("----------------------------------------");
      System.out.println(response.statusCode());
      System.out.println("----------------------------------------");
   }

   /**
    * putMethod stores a String value in your cache.
    * @param httpClient HTTP client that sends requests and receives responses
    * @param builder    Encapsulates HTTP requests
    * @throws IOException
    * @throws InterruptedException
    */
   public void putMethod(HttpClient httpClient, HttpRequest.Builder builder) throws IOException, InterruptedException {
      System.out.println("----------------------------------------");
      System.out.println("Executing PUT");
      System.out.println("----------------------------------------");

      String cacheValue = "Infinispan REST Test";
      HttpRequest request = builder.PUT(HttpRequest.BodyPublishers.ofString(cacheValue)).build();
      HttpResponse<Void> response = httpClient.send(request, HttpResponse.BodyHandlers.discarding());

      System.out.println("----------------------------------------");
      System.out.println(response.statusCode());
      System.out.println("----------------------------------------");
   }

   /**
    * getMethod get a String value from your cache.
    * @param httpClient HTTP client that sends requests and receives responses
    * @param builder    Encapsulates HTTP requests
    * @return           String value
    * @throws IOException
    */
   public String getMethod(HttpClient httpClient, HttpRequest.Builder builder) throws IOException, InterruptedException {
      System.out.println("----------------------------------------");
      System.out.println("Executing GET");
      System.out.println("----------------------------------------");

      HttpRequest request = builder.GET().build();
      HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());

      System.out.println("Executing get method of value: " + response.body());

      System.out.println("----------------------------------------");
      System.out.println(response.statusCode());
      System.out.println("----------------------------------------");

      return response.body();
   }

   public static void main(String[] args) throws IOException, InterruptedException {
      RestExample restExample = new RestExample();
      HttpClient httpClient = HttpClient.newBuilder().version(HttpClient.Version.HTTP_1_1).build();

      restExample.postMethod(httpClient, getHttpReqestBuilder(String.format("%s%s", SERVER_ADDRESS, CACHE_URI)));
      restExample.putMethod(httpClient, getHttpReqestBuilder(String.format("%s%s/1", SERVER_ADDRESS, CACHE_URI)));
      restExample.getMethod(httpClient, getHttpReqestBuilder(String.format("%s%s/1", SERVER_ADDRESS, CACHE_URI)));
   }

   private static String basicAuth(String username, String password) {
      return "Basic " + Base64.getEncoder().encodeToString((username + ":" + password).getBytes());
   }

   private static final HttpRequest.Builder getHttpReqestBuilder(String url) {
      return HttpRequest.newBuilder()
            .uri(URI.create(url))
            .header("Content-Type", "text/plain")
            .header("Authorization", basicAuth("user", "pass"));
   }
}