Storm UI server provides a REST Api to access cluster, topology, component overview and metrics. This api returns json response.
REST API supports JSONP. User can pass callback query param to wrap json in the callback function. Please ignore undocumented elements in the json repsonse.
returns cluster configuration. Below is a sample response but doesn't include all the config fileds.
Sample Response:
{ "dev.zookeeper.path": "/tmp/dev-storm-zookeeper", "topology.tick.tuple.freq.secs": null, "topology.builtin.metrics.bucket.size.secs": 60, "topology.fall.back.on.java.serialization": true, "topology.max.error.report.per.interval": 5, "zmq.linger.millis": 5000, "topology.skip.missing.kryo.registrations": false, "storm.messaging.netty.client_worker_threads": 1, "ui.childopts": "-Xmx768m", "storm.zookeeper.session.timeout": 20000, "nimbus.reassign": true, "topology.trident.batch.emit.interval.millis": 500, "storm.messaging.netty.flush.check.interval.ms": 10, "nimbus.monitor.freq.secs": 10, "logviewer.childopts": "-Xmx128m", "java.library.path": "/usr/local/lib:/opt/local/lib:/usr/lib", "topology.executor.send.buffer.size": 1024, }
returns cluster summary such as nimbus uptime,number of supervisors,slots etc..
Response Fields:
| Field | Value | Description |
|---|---|---|
| stormVersion | String | Storm version |
| nimbusUptime | String | Shows how long the cluster is running |
| supervisors | Integer | Number of supervisors running |
| slotsTotal | Integer | Total number of available worker slots |
| slotsUsed | Integer | Number of worker slots used |
| slotsFree | Integer | Number of worker slots available |
| executorsTotal | Integer | Total number of executors |
| tasksTotal | Integer | Total tasks |
Sample Response:
{ "stormVersion": "0.9.2-incubating-SNAPSHOT", "nimbusUptime": "3m 53s", "supervisors": 1, "slotsTotal": 4, "slotsUsed": 3, "slotsFree": 1, "executorsTotal": 28, "tasksTotal": 28 }
returns all supervisors summary
Response Fields:
| Field | Value | Description |
|---|---|---|
| id | String | Supervisor's id |
| host | String | Supervisor's host name |
| uptime | String | Shows how long the supervisor is running |
| slotsTotal | Integer | Total number of available worker slots for this supervisor |
| slotsUsed | Integer | Number of worker slots used on this supervisor |
Sample Response:
{ "supervisors": [ { "id": "0b879808-2a26-442b-8f7d-23101e0c3696", "host": "10.11.1.7", "uptime": "5m 58s", "slotsTotal": 4, "slotsUsed": 3 } ] }
Returns all topologies summary
Response Fields:
| Field | Value | Description |
|---|---|---|
| id | String | Topology Id |
| name | String | Topology Name |
| status | String | Topology Status |
| uptime | String | Shows how long the topology is running |
| tasksTotal | Integer | Total number of tasks for this topology |
| workersTotal | Integer | Number of workers used for this topology |
| executorsTotal | Integer | Number of executors used for this topology |
Sample Response:
{ "topologies": [ { "id": "WordCount3-1-1402960825", "name": "WordCount3", "status": "ACTIVE", "uptime": "6m 5s", "tasksTotal": 28, "workersTotal": 3, "executorsTotal": 28 } ] }
Returns topology information and stats. Subsititute id with topology id.
Request Parameters:
| Parameter | Value | Description |
|---|---|---|
| id | String (required) | Topology Id |
| window | String. Default value :all-time | Window duration for metrics in seconds |
| sys | String. Values 1 or 0. Default value 0 | Controls including sys stats part of the response |
Response Fields:
| Field | Value | Description |
|---|---|---|
| id | String | Topology Id |
| name | String | Topology Name |
| uptime | String | Shows how long the topology is running |
| status | String | Shows Topology's current status |
| tasksTotal | Integer | Total number of tasks for this topology |
| workersTotal | Integer | Number of workers used for this topology |
| executorsTotal | Integer | Number of executors used for this topology |
| msgTimeout | Integer | Number of seconds a tuple has before the spout considers it failed |
| windowHint | String | window param value in “hh mm ss” format. Default value is “All Time” |
| topologyStats | Array | Array of all the topology related stats per time window |
| topologyStats.windowPretty | String | Duration passed in HH:MM:SS format |
| topologyStats.window | String | User requested time window for metrics |
| topologyStats.emitted | Long | Number of messages emitted in given window |
| topologyStats.trasferred | Long | Number messages transferred in given window |
| topologyStats.completeLatency | String (double value returned in String format) | Total latency for processing the message |
| topologyStats.acked | Long | Number of messages acked in given window |
| topologyStats.failed | Long | Number of messages failed in given window |
| spouts | Array | Array of all the spout components in the topology |
| spouts.spoutId | String | Spout id |
| spouts.executors | Integer | Number of executors for the spout |
| spouts.emitted | Long | Number of messages emitted in given window |
| spouts.completeLatency | String (double value returned in String format) | Total latency for processing the message |
| spouts.transferred | Long | Total number of messages transferred in given window |
| spouts.tasks | Integer | Total number of tasks for the spout |
| spouts.lastError | String | Shows the last error happened in a spout |
| spouts.errorLapsedSecs | Integer | Number of seconds elapsed since that last error happened in a spout |
| spouts.errorWorkerLogLink | String | Link to the worker log that reported the exception |
| spouts.acked | Long | Number of messages acked |
| spouts.failed | Long | Number of messages failed |
| bolts | Array | Array of bolt components in the topology |
| bolts.boltId | String | Bolt id |
| bolts.capacity | String (double value returned in String format) | This value indicates number of messages executed * average execute latency / time window |
| bolts.processLatency | String (double value returned in String format) | Bolt‘s average time to ack a message after it’s received |
| bolts.executeLatency | String (double value returned in String format) | Average time for bolt's execute method |
| bolts.executors | Integer | Number of executor tasks in the bolt component |
| bolts.tasks | Integer | Number of instances of bolt |
| bolts.acked | Long | Number of tuples acked by the bolt |
| bolts.failed | Long | Number of tuples failed by the bolt |
| bolts.lastError | String | Shows the last error occurred in the bolt |
| bolts.errorLapsedSecs | Integer | Number of seconds elapsed since that last error happened in a bolt |
| bolts.errorWorkerLogLink | String | Link to the worker log that reported the exception |
| bolts.emitted | Long | Number of tuples emitted |
Examples:
1. http://ui-daemon-host-name:8080/api/v1/topology/WordCount3-1-1402960825 2. http://ui-daemon-host-name:8080/api/v1/topology/WordCount3-1-1402960825?sys=1 3. http://ui-daemon-host-name:8080/api/v1/topology/WordCount3-1-1402960825?window=600
Sample Response:
{ "name": "WordCount3", "id": "WordCount3-1-1402960825", "workersTotal": 3, "window": "600", "status": "ACTIVE", "tasksTotal": 28, "executorsTotal": 28, "uptime": "29m 19s", "msgTimeout": 30, "windowHint": "10m 0s", "topologyStats": [ { "windowPretty": "10m 0s", "window": "600", "emitted": 397960, "transferred": 213380, "completeLatency": "0.000", "acked": 213460, "failed": 0 }, { "windowPretty": "3h 0m 0s", "window": "10800", "emitted": 1190260, "transferred": 638260, "completeLatency": "0.000", "acked": 638280, "failed": 0 }, { "windowPretty": "1d 0h 0m 0s", "window": "86400", "emitted": 1190260, "transferred": 638260, "completeLatency": "0.000", "acked": 638280, "failed": 0 }, { "windowPretty": "All time", "window": ":all-time", "emitted": 1190260, "transferred": 638260, "completeLatency": "0.000", "acked": 638280, "failed": 0 } ], "spouts": [ { "executors": 5, "emitted": 28880, "completeLatency": "0.000", "transferred": 28880, "acked": 0, "spoutId": "spout", "tasks": 5, "lastError": "", "errorLapsedSecs": null "failed": 0 } ], "bolts": [ { "executors": 12, "emitted": 184580, "transferred": 0, "acked": 184640, "executeLatency": "0.048", "tasks": 12, "executed": 184620, "processLatency": "0.043", "boltId": "count", "lastError": "", "errorLapsedSecs": null "capacity": "0.003", "failed": 0 }, { "executors": 8, "emitted": 184500, "transferred": 184500, "acked": 28820, "executeLatency": "0.024", "tasks": 8, "executed": 28780, "processLatency": "2.112", "boltId": "split", "lastError": "", "errorLapsedSecs": null "capacity": "0.000", "failed": 0 } ], "configuration": { "storm.id": "WordCount3-1-1402960825", "dev.zookeeper.path": "/tmp/dev-storm-zookeeper", "topology.tick.tuple.freq.secs": null, "topology.builtin.metrics.bucket.size.secs": 60, "topology.fall.back.on.java.serialization": true, "topology.max.error.report.per.interval": 5, "zmq.linger.millis": 5000, "topology.skip.missing.kryo.registrations": false, "storm.messaging.netty.client_worker_threads": 1, "ui.childopts": "-Xmx768m", "storm.zookeeper.session.timeout": 20000, "nimbus.reassign": true, "topology.trident.batch.emit.interval.millis": 500, "storm.messaging.netty.flush.check.interval.ms": 10, "nimbus.monitor.freq.secs": 10, "logviewer.childopts": "-Xmx128m", "java.library.path": "/usr/local/lib:/opt/local/lib:/usr/lib", "topology.executor.send.buffer.size": 1024, "storm.local.dir": "storm-local", "storm.messaging.netty.buffer_size": 5242880, "supervisor.worker.start.timeout.secs": 120, "topology.enable.message.timeouts": true, "nimbus.cleanup.inbox.freq.secs": 600, "nimbus.inbox.jar.expiration.secs": 3600, "drpc.worker.threads": 64, "topology.worker.shared.thread.pool.size": 4, "nimbus.host": "hw10843.local", "storm.messaging.netty.min_wait_ms": 100, "storm.zookeeper.port": 2181, "transactional.zookeeper.port": null, "topology.executor.receive.buffer.size": 1024, "transactional.zookeeper.servers": null, "storm.zookeeper.root": "/storm", "storm.zookeeper.retry.intervalceiling.millis": 30000, "supervisor.enable": true, "storm.messaging.netty.server_worker_threads": 1 }, }
Returns detailed metrics and executor information
| Parameter | Value | Description |
|---|---|---|
| id | String (required) | Topology Id |
| component | String (required) | Component Id |
| window | String. Default value :all-time | window duration for metrics in seconds |
| sys | String. Values 1 or 0. Default value 0 | controls including sys stats part of the response |
Response Fields:
| Field | Value | Description |
|---|---|---|
| id | String | Component's id |
| name | String | Topology name |
| componentType | String | component's type SPOUT or BOLT |
| windowHint | String | window param value in “hh mm ss” format. Default value is “All Time” |
| executors | Integer | Number of executor tasks in the component |
| componentErrors | Array of Errors | List of component errors |
| componentErrors.time | Long | Timestamp when the exception occurred |
| componentErrors.errorHost | String | host name for the error |
| componentErrors.errorPort | String | port for the error |
| componentErrors.error | String | Shows the error happened in a component |
| componentErrors.errorLapsedSecs | Integer | Number of seconds elapsed since the error happened in a component |
| componentErrors.errorWorkerLogLink | String | Link to the worker log that reported the exception |
| topologyId | String | Topology's Id |
| tasks | Integer | Number of instances of component |
| window | String. Default value “All Time” | window duration for metrics in seconds |
| spoutSummary or boltStats | Array | Array of component stats. Please note this element tag can be spoutSummary or boltStats depending on the componentType |
| spoutSummary.windowPretty | String | Duration passed in HH:MM:SS format |
| spoutSummary.window | String | window duration for metrics in seconds |
| spoutSummary.emitted | Long | Number of messages emitted in given window |
| spoutSummary.completeLatency | String (double value returned in String format) | Total latency for processing the message |
| spoutSummary.transferred | Long | Total number of messages transferred in given window |
| spoutSummary.acked | Long | Number of messages acked |
| spoutSummary.failed | Long | Number of messages failed |
| boltStats.windowPretty | String | Duration passed in HH:MM:SS format |
| boltStats..window | String | window duration for metrics in seconds |
| boltStats.transferred | Long | Total number of messages transferred in given window |
| boltStats.processLatency | String (double value returned in String format) | Bolt‘s average time to ack a message after it’s received |
| boltStats.acked | Long | Number of messages acked |
| boltStats.failed | Long | Number of messages failed |
Examples:
1. http://ui-daemon-host-name:8080/api/v1/topology/WordCount3-1-1402960825/component/spout 2. http://ui-daemon-host-name:8080/api/v1/topology/WordCount3-1-1402960825/component/spout?sys=1 3. http://ui-daemon-host-name:8080/api/v1/topology/WordCount3-1-1402960825/component/spout?window=600
Sample Response:
{ "name": "WordCount3", "id": "spout", "componentType": "spout", "windowHint": "10m 0s", "executors": 5, "componentErrors":[{"time": 1406006074000, "errorHost": "10.11.1.70", "errorPort": 6701, "errorWorkerLogLink": "http://10.11.1.7:8000/log?file=worker-6701.log", "errorLapsedSecs": 16, "error": "java.lang.RuntimeException: java.lang.StringIndexOutOfBoundsException: Some Error\n\tat backtype.storm.utils.DisruptorQueue.consumeBatchToCursor(DisruptorQueue.java:128)\n\tat backtype.storm.utils.DisruptorQueue.consumeBatchWhenAvailable(DisruptorQueue.java:99)\n\tat backtype.storm.disruptor$consume_batch_when_available.invoke(disruptor.clj:80)\n\tat backtype...more.." }], "topologyId": "WordCount3-1-1402960825", "tasks": 5, "window": "600", "spoutSummary": [ { "windowPretty": "10m 0s", "window": "600", "emitted": 28500, "transferred": 28460, "completeLatency": "0.000", "acked": 0, "failed": 0 }, { "windowPretty": "3h 0m 0s", "window": "10800", "emitted": 127640, "transferred": 127440, "completeLatency": "0.000", "acked": 0, "failed": 0 }, { "windowPretty": "1d 0h 0m 0s", "window": "86400", "emitted": 127640, "transferred": 127440, "completeLatency": "0.000", "acked": 0, "failed": 0 }, { "windowPretty": "All time", "window": ":all-time", "emitted": 127640, "transferred": 127440, "completeLatency": "0.000", "acked": 0, "failed": 0 } ], "outputStats": [ { "stream": "__metrics", "emitted": 40, "transferred": 0, "completeLatency": "0", "acked": 0, "failed": 0 }, { "stream": "default", "emitted": 28460, "transferred": 28460, "completeLatency": "0", "acked": 0, "failed": 0 } ] "executorStats": [ { "workerLogLink": "http://10.11.1.7:8000/log?file=worker-6701.log", "emitted": 5720, "port": 6701, "completeLatency": "0.000", "transferred": 5720, "host": "10.11.1.7", "acked": 0, "uptime": "43m 4s", "id": "[24-24]", "failed": 0 }, { "workerLogLink": "http://10.11.1.7:8000/log?file=worker-6703.log", "emitted": 5700, "port": 6703, "completeLatency": "0.000", "transferred": 5700, "host": "10.11.1.7", "acked": 0, "uptime": "42m 57s", "id": "[25-25]", "failed": 0 }, { "workerLogLink": "http://10.11.1.7:8000/log?file=worker-6702.log", "emitted": 5700, "port": 6702, "completeLatency": "0.000", "transferred": 5680, "host": "10.11.1.7", "acked": 0, "uptime": "42m 57s", "id": "[26-26]", "failed": 0 }, { "workerLogLink": "http://10.11.1.7:8000/log?file=worker-6701.log", "emitted": 5700, "port": 6701, "completeLatency": "0.000", "transferred": 5680, "host": "10.11.1.7", "acked": 0, "uptime": "43m 4s", "id": "[27-27]", "failed": 0 }, { "workerLogLink": "http://10.11.1.7:8000/log?file=worker-6703.log", "emitted": 5680, "port": 6703, "completeLatency": "0.000", "transferred": 5680, "host": "10.11.1.7", "acked": 0, "uptime": "42m 57s", "id": "[28-28]", "failed": 0 } ] }
activates a topology
| Parameter | Value | Description |
|---|---|---|
| id | String (required) | Topology Id |
deactivates a topology
| Parameter | Value | Description |
|---|---|---|
| id | String (required) | Topology Id |
rebalances a topology
| Parameter | Value | Description |
|---|---|---|
| id | String (required) | Topology Id |
| wait-time | String (required) | Wait time before rebalance happens |
kills a topology
| Parameter | Value | Description |
|---|---|---|
| id | String (required) | Topology Id |
| wait-time | String (required) | Wait time before rebalance happens |
on errors in any of the above api returns 500 http status code with the following response.
Sample Response:
{ "error": "Internal Server Error", "errorMessage": "java.lang.NullPointerException\n\tat clojure.core$name.invoke(core.clj:1505)\n\tat backtype.storm.ui.core$component_page.invoke(core.clj:752)\n\tat backtype.storm.ui.core$fn__7766.invoke(core.clj:782)\n\tat compojure.core$make_route$fn__5755.invoke(core.clj:93)\n\tat compojure.core$if_route$fn__5743.invoke(core.clj:39)\n\tat compojure.core$if_method$fn__5736.invoke(core.clj:24)\n\tat compojure.core$routing$fn__5761.invoke(core.clj:106)\n\tat clojure.core$some.invoke(core.clj:2443)\n\tat compojure.core$routing.doInvoke(core.clj:106)\n\tat clojure.lang.RestFn.applyTo(RestFn.java:139)\n\tat clojure.core$apply.invoke(core.clj:619)\n\tat compojure.core$routes$fn__5765.invoke(core.clj:111)\n\tat ring.middleware.reload$wrap_reload$fn__6880.invoke(reload.clj:14)\n\tat backtype.storm.ui.core$catch_errors$fn__7800.invoke(core.clj:836)\n\tat ring.middleware.keyword_params$wrap_keyword_params$fn__6319.invoke(keyword_params.clj:27)\n\tat ring.middleware.nested_params$wrap_nested_params$fn__6358.invoke(nested_params.clj:65)\n\tat ring.middleware.params$wrap_params$fn__6291.invoke(params.clj:55)\n\tat ring.middleware.multipart_params$wrap_multipart_params$fn__6386.invoke(multipart_params.clj:103)\n\tat ring.middleware.flash$wrap_flash$fn__6675.invoke(flash.clj:14)\n\tat ring.middleware.session$wrap_session$fn__6664.invoke(session.clj:43)\n\tat ring.middleware.cookies$wrap_cookies$fn__6595.invoke(cookies.clj:160)\n\tat ring.adapter.jetty$proxy_handler$fn__6112.invoke(jetty.clj:16)\n\tat ring.adapter.jetty.proxy$org.mortbay.jetty.handler.AbstractHandler$0.handle(Unknown Source)\n\tat org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)\n\tat org.mortbay.jetty.Server.handle(Server.java:326)\n\tat org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)\n\tat org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)\n\tat org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)\n\tat org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)\n\tat org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)\n\tat org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)\n\tat org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)\n" }