1. Infinispan REST Server

Infinispan servers provide RESTful HTTP access to data via a REST module built on Netty.

REST endpoints listen on port 11222 by default.

1.1. REST Authentication

You can configure authentication to the REST endpoint with the user-tool.sh script in the Infinispan server distribution.

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

1.2. Supported Protocols

The REST Server supports HTTP/1.1 and HTTP/2 protocols.

You can switch to HTTP/2 with either of the following:

TLS/ALPN with JDK8 requires additional client configuration. Refer to the appropriate documentation for your REST client but you are likely to need Jetty ALPN Agent or OpenSSL bindings.

1.3. Configuring Data Formats via the REST API

Each cache exposed via REST stores data in a configurable data format defined by a MediaType.

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

An example of storage configuration is as follows:

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

When no MediaType is configured, Infinispan assumes "application/octet-stream" for both keys and values, with the following exceptions:

  • If the cache is indexed, it assumes "application/x-protostream"

1.3.1. Supported Formats

Data can be written and read in different formats than the storage format; Infinispan can convert between those formats when required.

The following "standard" formats can be converted interchangeably:

  • application/x-java-object

  • application/octet-stream

  • application/x-www-form-urlencoded

  • text/plain

The following formats can be converted to/from the formats above:

  • application/xml

  • application/json

  • application/x-jboss-marshalling

  • application/x-protostream

  • application/x-java-serialized

Finally, the following conversion is also supported:

  • Between application/x-protostream and application/json

All the REST API calls 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 REST server is compliant with the RFC-2616 Accept header, and will negotiate the correct MediaType based on the conversions supported. Example, sending the following header when reading data:

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

will cause Infinispan to try first to return content in JSON format (higher priority 0.8). If it’s not possible to convert the storage format to JSON, next format tried will be text/plain (second highest priority 0.7), and finally it falls back to */*, that will pick a format suitable for displaying automatically based on the cache configuration.

1.3.3. Key-Content-Type Headers

Most REST API calls have the Key included in the URL. Infinispan will assume the Key is a java.lang.String when handling those calls, but it’s possible to use a specific header Key-Content-Type for keys in different formats.

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

1.3.4. JSON/Protostream Conversion

When caches are indexed, or specifically configured to store application/x-protostream, it’s possible to send and receive JSON documents that are automatically converted to/from protostream. In order for the conversion to work, a protobuf schema must be registered.

The registration can be done via REST, by doing a POST/PUT in the ___protobuf_metadata cache. Example using cURL:

curl -u user:password -X POST --data-binary @./schema.proto http://127.0.0.1:8080/rest/v2/caches/___protobuf_metadata/schema.proto

When writing a JSON document, a special field _type must be present in the document to identity the protobuf Message corresponding to the document.

For example, consider the following schema:

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

A conformant JSON document would be:

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

1.4. Cross-Origin Resource Sharing (CORS) Requests

The REST server supports CORS including preflight and rules based on the request origin.

Example:

<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>

The rules are evaluated sequentially based on the "Origin" header set by the browser; in the example above if the origin is either "http://host1" or "https://host1" the rule "restrict host1" will apply, otherwise the next rule will be tested. Since the rule "allow ALL" permits all origins, any script coming from a different origin will be able to perform the methods specified and use the headers supplied.

The <cors-rule> element can be configured as follows:

Config Description Mandatory

name

The name of the rule

yes

allow-credentials

Enable CORS requests to use credentials

no

allowed-origins

A comma separated list used to set the CORS 'Access-Control-Allow-Origin' header to indicate the response can be shared with the origins

yes

allowed-methods

A comma separated list used to set the CORS 'Access-Control-Allow-Methods' header in the preflight response to specify the methods allowed for the configured origin(s)

yes

allowed-headers

A comma separated list used to set the CORS 'Access-Control-Allow-Headers' in the preflight response to specify which headers can be used by the configured origin(s)

no

max-age-seconds

The amount of time CORS preflight request headers can be cached

no

expose-headers

A comma separated list used to set the CORS 'Access-Control-Expose-Headers' in the preflight response to specify which headers can be exposed to the configured origin(s)

no

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.

The details in this section apply to the REST v2 API only.

The REST v1 API is deprecated and no longer supported in future Infinispan versions.

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

XML Configuration

Infinispan configuration in XML format must conform to the schema and include:

  • <infinispan> root element.

  • <cache-container> definition.

Example XML Configuration
<infinispan>
    <cache-container>
        <distributed-cache name="cacheName" mode="SYNC">
            <memory>
                <object size="20"/>
            </memory>
        </distributed-cache>
    </cache-container>
</infinispan>
JSON Configuration

Infinispan configuration in JSON format:

  • Requires the cache definition only.

  • Must follow the structure of an XML configuration.

    • XML elements become JSON objects.

    • XML attributes become JSON fields.

Example JSON Configuration
{
  "distributed-cache": {
    "mode": "SYNC",
    "memory": {
      "object": {
        "size": 20
      }
    }
  }
}

2.1.2. Verifying Caches

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

HEAD /v2/caches/{cacheName}

2.1.3. Creating Caches with Templates

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

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

2.1.4. Retrieving Cache Configuration

Retrieve Infinispan cache configurations with GET requests.

GET /rest/v2/caches/{name}?action=config
Table 2. 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.

2.1.5. Converting Cache Configurations to JSON

Invoke a POST request with valid XML configuration and the ?action=toJSON parameter. Infinispan responds with the equivalent JSON representation of the configuration.

POST /rest/v2/caches?action=toJSON

2.1.6. Retrieving All Cache Details

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

GET /rest/v2/caches/{name}

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,
  "bounded": false,
  "indexed": false,
  "persistent": false,
  "transactional": false,
  "secured": false,
  "has_remote_backup": false,
  "indexing_in_progress": false,
  "statistics": false
}
  • 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.

  • 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.

2.1.7. 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 a value already exists for the specified key, the POST request returns an HTTP CONFLICT status and does not modify the value. To update values, you should use PUT requests. See Replacing Entries.

Table 3. 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.

2.1.8. 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 HTTP CONFLICT status instead of modifying values. See Adding Values.

2.1.9. 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 4. 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 /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.

2.1.10. 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 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.

2.1.11. Deleting Entries

Remove entries from caches with DELETE requests.

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

2.1.12. Deleting Caches

Remove caches from Infinispan clusters with DELETE requests.

DELETE /rest/v2/caches/{cacheName}

2.1.13. 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 7. Request Parameters
Parameter Required or Optional Value

batch-size

OPTIONAL

Specifies the internal batch size when retrieving the keys. The default value is 1000.

2.1.14. Clearing Caches

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

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

2.1.15. 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

2.1.16. Getting Cache Statistics

Obtain runtime statistics for caches with GET requests.

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

2.1.17. Querying Caches

Perform Ickle queries on caches with GET requests and the ?action=search&query parameter.

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

Infinispan responds with query hits such as the following:

{
  "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 8. Request Parameters
Parameter Required or Optional Value

query

REQUIRED

Specifies the query string.

max_results

OPTIONAL

Sets the number of results to return. The default is 10.

offset

OPTIONAL

Specifies the index of the first result to return. The default is 0.

query_mode

OPTIONAL

Specifies how the Infinispan server executes the query. Values are FETCH and BROADCAST. The default is FETCH.

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

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

The following example shows a query in the request body:

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

2.1.18. Re-indexing Data

Re-index all data in caches with GET requests and the ?action=mass-index?mode={mode} parameter.

GET  /v2/caches/{cacheName}/search/indexes?action=mass-index?mode={mode}

Values for the mode parameter are as follows:

  • sync returns a response of 200 only after the re-indexing operation is complete.

  • async returns a response of 200 immediately and the re-indexing operation continues running in the cluster. You can check the status with the Index Statistics REST call.

2.1.19. Purging Indexes

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

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

2.1.20. Retrieving Index Statistics

Obtain information about indexes in caches with GET requests.

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

Infinispan provides a JSON response such as the following:

{
    "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.

2.1.21. Retrieving Query Statistics

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

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

Infinispan provides a JSON response such as the following:

{
    "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.

2.1.22. Clearing Query Statistics

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

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

2.1.23. Listing Caches

List all available caches in Infinispan clusters with GET requests.

GET /rest/v2/caches/

2.1.24. 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 Sites

Retrieve the status of all backup sites with GET requests.

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

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

{
  "NYC": "online",
  "LON": "offline"
}
Table 9. Returned Status
Value Description

online

All nodes in the backup site are online

offline

All node in the backup site are offline

mixed

Some nodes in the backup site are online and others offline. It will include in the status the nodes that are offline. E.g.: mixed, offline on nodes: Node1, Node2

Getting Status of Specific Backup Sites

Retrieve the status of specific backup sites with GET requests.

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

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

{
  "NodeA":"offline",
  "NodeB":"online"
}
Table 10. Returned Status
Value Description

online

The node is online

offline

The node is offline

failed

Failed to obtain status, the remote cache could be shutting down or a network error occurred during the request

Taking Backup Sites offline

Take backup sites offline for specific caches with GET requests and the ?action=take-offline parameter.

GET /v2/caches/{cacheName}/x-site/backups/{siteName}?action=take-offline
Bringing Backup Sites Online

Bring backup sites online for specific caches with GET requests and the ?action=bring-online parameter.

GET /v2/caches/{cacheName}/x-site/backups/{siteName}?action=bring-online
Starting State Pushes

Start pushing state of caches to backup sites with GET requests and the ?action=start-push-state parameter.

GET /v2/caches/{cacheName}/x-site/backups/{siteName}?action=start-push-state
Canceling State Pushes

Cancel state push for caches to backup sites with GET requests and the ?action=cancel-push-state parameter.

GET /v2/caches/{cacheName}/x-site/backups/{siteName}?action=cancel-push-state
Clearing State Transfer Status

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

GET /v2/caches/{cacheName}/x-site/local?action=clear-push-state-status
Getting Status of State Pushes

Retrieve status of ongoing state pushes to backup sites with GET requests.

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

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

{
   "NYC":"CANCELED",
   "LON":"OK"
}
Table 11. Returned Status
Value Description

SENDING

State push to the backup site is in progress.

OK

State is pushed to the backup site successfully.

ERROR

Error occurred with state push to the backup site.

CANCELLING

State push to the backup site is being canceled.

Tuning Take Offline Parameters of Remote Sites

Remote sites are automatically marked as offline if certain conditions are met.

Procedure
  1. Check configured take offline parameters with GET requests and the take-offline-config parameter.

    GET /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
    }
  2. Modify take offline parameters in the body of PUT requests.

    PUT /v2/caches/{cacheName}/x-site/backups/{siteName}/take-offline-config
Canceling Receiving States

Return Infinispan caches to normal after state is pushed from backup sites with GET requests and the ?action=cancel-receive-state parameter.

This operation is useful if the link between two sites is broken and the receiver site maintains an ongoing state transfer state.

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

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. Adding Values to Counters

Add values to specific counters with POST requests.

This method processes plain/text content only.

POST /rest/v2/counters/{counterName}

If the request payload is empty, the counter is incremented by one, otherwise the payload is interpreted as a signed long and added to the counter.

WEAK counters never respond after operations.

STRONG counters return the current value after each operation.

2.2.5. Getting Counter Values

Retrieve counter values with GET requests.

GET /rest/v2/counters/{counterName}
Table 12. 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.

2.2.6. Resetting Counters

Restore the intial value of counters without GET requests and the ?action=reset parameter.

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

2.2.7. Incrementing Counters

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

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

WEAK counters never respond after operations.

STRONG counters return the current value after each operation.

2.2.8. Adding Deltas to Counters

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

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

WEAK counters never respond after operations.

STRONG counters return the current value after each operation.

2.2.9. Decrementing Counter Values

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

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

WEAK counters never respond after operations.

STRONG counters return the current value after each operation.

2.2.10. Performing compareAndSet Operations on Strong Counters

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

GET /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.

2.2.11. Performing compareAndSwap Operations on Strong Counters

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

GET /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.

2.2.12. Listing Counters

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

GET /rest/v2/counters/

2.3. Working with Cache Managers

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

2.3.1. 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:

{
    "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
        }
    ]

}
  • 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

  • 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

2.3.2. 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.

    • 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 or HEALTHY_REBALANCING

    • cache_name the name of the cache as defined in the configuration.

2.3.3. 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

2.3.4. 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.

2.3.5. Obtaining Global Configuration for Cache Managers

Retrieve global configuration for Cache Managers with GET requests.

GET /rest/v2/cache-managers/{cacheManagerName}/config
Table 13. 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.

2.3.6. 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"
              }
          }
      }
  }
]

2.3.7. Listing Cache Templates

List all templates available for creating caches with GET requests.

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

2.3.8. (Experimental) 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"
}, {
  "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"
}]

2.3.9. 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.

2.3.10. Cross-Site Operations with Cache Managers

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

Getting Status of Backup Sites

Retrieve the status for all backup sites 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"
      ]
   }
}

The status field has the following values:

  • online: all caches are online in the backup site.

  • offline: all caches are offline in the backup site.

  • mixed: some caches are online and others offline, and their names will be listed in the online and offline arrays respectively.

Taking Backup Sites Offline

Take backup sites offline from Cache Managers with GET requests and the ?action=take-offline parameter.

GET /rest/v2/cache-managers/{cacheManagerName}/x-site/backups/{siteName}?action=take-offline
Bringing Backup Sites Online

Bring backup sites online from Cache Managers with GET requests and the ?action=bring-online parameter.

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

Start pushing state of all caches for a Cache Manager to a backup site with GET requests and the ?action=start-push-state parameter.

GET /rest/v2/cache-managers/{cacheManagerName}/x-site/backups/{siteName}?action=start-push-state
Canceling State Push Operations

Cancel ongoing state push operations for Cache Managers with GET requests and the ?action=cancel-push-state parameter.

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

2.4. Working with Infinispan Servers

Monitor and manage Infinispan server instances.

2.4.1. 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"
}

2.4.2. 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.

2.4.3. 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 /v2/server/ignored-caches/{cache-manager}/{cache}

Infinispan returns a service unavailable status (503) for REST client requests and a Server Error (code 0x85) for Hot Rod client requests.

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

2.4.4. Removing Caches from Ignore Lists

Remove caches from the ignore list with DELETE requests.

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

2.4.5. Confirming Ignored Caches

Confirm that caches are ignored with GET requests.

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

2.4.6. 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"
            }
        }
    }
}

2.4.7. Getting Environment Variables

Retrieve all environment variables for Infinispan servers with GET requests.

GET /rest/v2/server/env

2.4.8. 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.

2.4.9. 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.

2.4.10. Stopping Infinispan Servers

Stop Infinispan servers with GET requests.

GET /rest/v2/server?action=stop

Infinispan responds with 200(OK) and then stops running.

2.5. Working with Infinispan Clusters

Monitor and perform administrative tasks on Infinispan clusters.

2.5.1. Stopping Infinispan Clusters

Shut down entire Infinispan clusters with GET requests.

GET /rest/v2/cluster?action=stop

Infinispan responds with 200(OK) and then performs an orderly shutdown of the entire cluster.

2.5.2. 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.

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

Infinispan responds with 200(OK).

2.6. Using Server Tasks

Retrieve, execute, and upload Infinispan server tasks.

2.6.1. Retrieving Server Tasks Information

View information about available server tasks with GET requests.

GET /rest/v2/tasks
Table 14. 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"
  }
]

2.6.2. Executing Tasks

Execute tasks with GET requests that include the task name and required parameters prefixed with param.

GET /rest/v2/tasks/myTask?action=exec&param.p1=v1&param.p2=v2

Infinispan responds with the task result.

2.6.3. 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

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:8080/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:8080/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:8080/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:8080/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:8080/rest/v2/caches/default/1", "Infinispan REST Test", user, pass);
        restExample.getMethod("http://localhost:8080/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"));
   }
}