はじめに
Apache Igniteは、インメモリデータグリッドを実現するミドルウェアです。インメモリデータグリッドとは、大量のデータを複数のサーバ上のメモリで分散化する技術です。
今回はIgniteのREST APIにアクセスして、Cacheの操作等を試してみます。
APIの一覧は以下に記載されています。
いろいろ試してみる
キャッシュへPUT
# curl 'http://localhost:8080/ignite?cmd=put&key=newKey&val=newValue&cacheName=put-get-example'
{"successStatus":0,"affinityNodeId":"bf71e392-84bb-4e59-b22e-7f33dd153b69","error":null,"sessionToken":null,"response":true}
キャッシュをGET
# curl 'http://localhost:8080/ignite?cmd=get&key=newKey&cacheName=put-get-example'
{"successStatus":0,"affinityNodeId":"bf71e392-84bb-4e59-b22e-7f33dd153b69","error":null,"sessionToken":null,"response":"newValue"}
keyが存在するか確認する（Contains key）
# curl 'http://localhost:8080/ignite?cmd=conkey&key=newKey&cacheName=put-get-example'
{"successStatus":0,"affinityNodeId":"bf71e392-84bb-4e59-b22e-7f33dd153b69","error":null,"sessionToken":null,"response":true}
# curl 'http://localhost:8080/ignite?cmd=conkey&key=nonExsistKey&cacheName=put-get-example'
{"successStatus":0,"affinityNodeId":"bf71e392-84bb-4e59-b22e-7f33dd153b69","error":null,"sessionToken":null,"response":false}
keyを削除する
keyが存在することを確認
# curl 'http://localhost:8080/ignite?cmd=get&key=newKey&cacheName=put-get-example'
{"successStatus":0,"affinityNodeId":"bf71e392-84bb-4e59-b22e-7f33dd153b69","error":null,"sessionToken":null,"response":"newValue"}
keyを削除
# curl 'http://localhost:8080/ignite?cmd=rmv&key=newKey&cacheName=put-get-example'
{"successStatus":0,"affinityNodeId":"bf71e392-84bb-4e59-b22e-7f33dd153b69","error":null,"sessionToken":null,"response":true}
keyが削除されていることを確認
# curl 'http://localhost:8080/ignite?cmd=get&key=newKey&cacheName=put-get-example'
{"successStatus":0,"affinityNodeId":"bf71e392-84bb-4e59-b22e-7f33dd153b69","error":null,"sessionToken":null,"response":null}
Igniteのバージョンを表示する
# curl 'http://localhost:8080/ignite?cmd=version'
{"successStatus":0,"error":null,"sessionToken":null,"response":"2.6.0"}
ログを取得する
# curl 'http://localhost:8080/ignite?cmd=log&from=20&to=21'
{"successStatus":0,"error":null,"sessionToken":null,"response":"[04:04:33,766][INFO][main][IgniteKernal] VM total memory: 0.97GB[04:04:33,766][INFO][main][IgniteKernal] Remote Management [restart: on, REST: on, JMX (remote: on, port: 49114, auth: off, ssl: off)]"}
キャッシュとメトリクスを取得する
# curl 'http://localhost:8080/ignite?cmd=cache&cacheName=put-get-example'
{"successStatus":0,"affinityNodeId":null,"error":null,"sessionToken":null,"response":{"reads":0,"writes":0,"hits":0,"misses":0}}
キャッシュのサイズを取得する
# curl 'http://localhost:8080/ignite?cmd=size&cacheName=put-get-example'
{"successStatus":0,"affinityNodeId":null,"error":null,"sessionToken":null,"response":5}
Nodeの情報を取得する
IPアドレス指定でNodeの情報を取得しています。
# curl 'http://localhost:8080/ignite?cmd=node&attr=true&mtr=true&ip=192.168.20.71'
{"successStatus":0,"error":null,"sessionToken":null,"response":{"nodeId":"bf71e392-84bb-4e59-b22e-7f33dd153b69","consistentId":"0:0:0:0:0:0:0:1%lo,10.0.2.15,127.0.0.1,172.17.0.1,172.18.0.1,172.19.0.1,192.168.100.254,192.168.20.71:47500","tcpHostNames":["172.18.0.1","192.168.100.254","172.17.0.1","172.19.0.1","igniteserver1","10.0.2.15"],"tcpPort":11211,"metrics":{"lastUpdateTime":1541833414462,"totalRejectedJobs":0,"totalCancelledJobs":0,"totalExecutedJobs":2,"totalIdleTime":14336584,"upTime":14135992,"startTime":1541819072336,"nodeStartTime":1541819074702,"totalStartedThreadCount":2966,"fileSystemFreeSpace":-1,"fileSystemTotalSpace":-1,"fileSystemUsableSpace":-1,"heapMemoryInitialized":1073741824,"heapMemoryMaximum":1037959168,"sentMessagesCount":3,"sentBytesCount":354,"receivedMessagesCount":3,"receivedBytesCount":1406,"totalCpus":1,"currentCpuLoad":0.006666666666666667,"currentGcCpuLoad":0.0,"heapMemoryUsed":176683424,"heapMemoryCommitted":1037959168,"nonHeapMemoryInitialized":2555904,"nonHeapMemoryUsed":68267152,"nonHeapMemoryCommitted":70385664,"nonHeapMemoryMaximum":780140544,"totalBusyTime":-200592,"maximumActiveJobs":1,"currentActiveJobs":0,"averageActiveJobs":1.5535187E-4,"maximumWaitingJobs":0,"currentWaitingJobs":0,"averageWaitingJobs":0.0,"maximumRejectedJobs":0,"currentRejectedJobs":0,"averageRejectedJobs":0.0,"maximumCancelledJobs":0,"currentCancelledJobs":0,"averageCancelledJobs":0.0,"maximumJobWaitTime":0,"currentJobWaitTime":0,"averageJobWaitTime":0.0,"maximumJobExecuteTime":0,"currentJobExecuteTime":0,"averageJobExecuteTime":0.0,"totalExecutedTasks":0,"currentIdleTime":13382001,"busyTimePercentage":-0.014190197,"idleTimePercentage":1.0141902,"averageCpuLoad":0.00972140230956445,"currentThreadCount":90,"maximumThreadCount":103,"currentDaemonThreadCount":11,"lastDataVersion":1541819074296},"caches":[{"name":"put-get-example","mode":"PARTITIONED","sqlSchema":null}],"order":1,"attributes":{"awt.toolkit":"sun.awt.X11.XToolkit","h2.objectCacheMaxPerElementSize":"0","java.specification.version":"1.8","sun.cpu.isalist":"","sun.jnu.encoding":"UTF-8","org.apache.ignite.rest.tcp.host.names":["172.18.0.1","192.168.100.254","172.17.0.1","172.19.0.1","igniteserver1","10.0.2.15"],"sun.arch.data.model":"64","org.apache.ignite.build.ver":"2.6.0","java.vendor.url":"http://java.oracle.com/","h2.serializeJavaObject":"false","org.apache.ignite.update.notifier.enabled":true,"sun.boot.library.path":"/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-0.el7_5.x86_64/jre/lib/amd64","com.sun.management.jmxremote.ssl":"false","sun.java.command":"org.apache.ignite.startup.cmdline.CommandLineStartup 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