unleash.unleash/docs/api/metrics-api.md

This document describes the client metrics endpoints

Client registration

POST: http://unleash.host.com/api/client/register

Register a client instance with the unleash server. The client should send all fields specified.

{
    "appName": "appName",
    "instanceId": "instanceId",
    "strategies": ["default", "some-strategy-1"],
    "started": "2016-11-03T07:16:43.572Z",
    "interval": 10000,
}

Fields:

• appName - Name of the application seen by unleash-server
• instanceId - Instance id for this application (typically hostname, podId or similar)
• strategies - List of strategies implemented by this application
• started - When this client started. Should be reported as UTC time.
• interval - At wich interval will this client be expected to send metrics?

Send metrics

POST http://unleash.host.com/api/client/metrics

Register a metrics payload with a timed bucket.

{
    "appName": "appName",
    "instanceId": "instanceId",
    "bucket": {
        "start": "2016-11-03T07:16:43.572Z",
        "stop": "2016-11-03T07:16:53.572Z",
        "toggles": {
            "toggle-name-1": {
                "yes": 123,
                "no": 321
            },
            "toggle-name-2": {
                "yes": 111,
                "no": 0
            }
        }
    },
}

Seen-toggles

GET http://unleash.host.com/api/client/seen-toggles

This enpoints returns a list of applications and what toogles unleash has seend for each application. It will only guarantee toggles reported by client applications within the last hour, but will in most cases remember seen-toggles for applications longer

Example response:

[
  {
    "appName": "demo-app",
    "seenToggles": [
      "add-feature-2",
      "toggle-2",
      "toggle-3"
    ],
    "metricsCount": 127
  },
  {
    "appName": "demo-app-2",
    "seenToggles": [
      "add-feature-2",
      "toggle-2",
      "toggle-3"
    ],
    "metricsCount": 21
  }
]

Fields:

• appName - Name of the application seen by unleash-server
• seenToggles - array of toggles names seen by unleash-server for this application
• metricsCount - number of metrics counted across all toggles for this application.

Feature-Toggles metrics

GET http://unleash.host.com/api/client/metrics/feature-toggles

This endpoint gives last minute and last hour metrics for all active toggles. This is based on metrics reported by client applications. Yes is the number of times a given feature toggle was evaluated to enabled in a client applcation, and no is the number it avaluated to false.

Example response:

{
  "lastHour": {
    "add-feature-2": {
      "yes": 0,
      "no": 527
    },
    "toggle-2": {
      "yes": 265,
      "no": 85
    },
    "toggle-3": {
      "yes": 257,
      "no": 93
    }
  },
  "lastMinute": {
    "add-feature-2": {
      "yes": 0,
      "no": 527
    },
    "toggle-2": {
      "yes": 265,
      "no": 85
    },
    "toggle-3": {
      "yes": 257,
      "no": 93
    }
  }
}

Fields:

• lastHour - Hour projection collected metrics for all feature toggles.
• lastMinute - Mintue projection collected metrics for all feature toggles.

Applications

GET http://unleash.host.com/api/client/applications

This endpoint returns a list of known applications (seen the last two days) and a link to follow for more datails.

{
  "applications": [
    {
      "appName": "test",
      "links": {
        "appDetails": "/api/client/applications/test"
      }
    },
    {
      "appName": "demo-app-2",
      "links": {
        "appDetails": "/api/client/applications/demo-app-2"
      }
    },
    {
      "appName": "demo-app",
      "links": {
        "appDetails": "/api/client/applications/demo-app"
      }
    }
  ]
}

Query Params

You can also specify the query param: strategyName, which will return all applications implementing the given strategy.

GET http://unleash.host.com/api/client/applications?strategyName=someStrategyName

Application Details

GET http://unleash.host.com/api/client/applications/:appName

This endpoint gives insight into details about a client applcation, such as instances, strategies implemented and seen toogles.

{
  "appName": "demo-app",
  "instances": [
    {
      "instanceId": "generated-732038-17080",
      "clientIp": "::ffff:127.0.0.1",
      "lastSeen": "2016-11-30T17:32:04.265Z",
      "createdAt": "2016-11-30T17:31:08.914Z"
    },
    {
      "instanceId": "generated-639919-11185",
      "clientIp": "::ffff:127.0.0.1",
      "lastSeen": "2016-11-30T16:04:15.991Z",
      "createdAt": "2016-11-30T10:49:11.223Z"
    },
  ],
  "strategies": [
    {
      "appName": "demo-app",
      "strategies": [
        "default",
        "extra"
      ]
    }
  ],
  "seenToggles": [
    "add-feature-2",
    "toggle-2",
    "toggle-3"
  ]
}