IBM Cloud Monitoring JavaScript SDK

JavaScript library for the IBM Cloud Monitoring service.

Use the IBM® Cloud Monitoring service to expand your collection and retention capabilities when working with metrics, and to be able to define rules and alerts that notify you of conditions that require attention.

Provides a wrapper around the HTTP APIs for interacting with the service.

Supports listing, retrieving and savings metrics from the IBM Cloud Monitoring service.

usage

const Monitoring = require('ibm-cloud-monitoring')
const client = new Monitoring({ scope: 's-XXX', api_key: 'API_KEY' })

// retrieve Node.js memory usage stats => { rss, heapTotal, heapUsed, external }                               
const memUsage = process.memoryUsage()

// metrics should use label name
const metricName = metric => `app.metric.${metric}`

// convert to memory usage stats to {key: '...', value: '...'}
const metrics = Object.entries(memUsage).map(
  entry => ({key: metricName(entry[0]), value: entry[1]})
)

await client.save(metrics)

This example saves the current memory usage statistics for a Node.js application to the IBM Cloud Monitoring Service.

installation

npm install ibm-cloud-monitoring

configuration

host

The following regional endpoints are available for the metrics service.

| Region | Hostname | | -------- | -------------------------- | | US-South | metrics.ng.bluemix.net | | UK | metrics.eu-gb.bluemix.net | | Germany | metrics.eu-de.bluemix.net | | Sydney | metrics.au-syd.bluemix.net |

scope

scope must be the GUID for the space being monitored.

Using the Bluemix CLI, the GUID for a space can be retrieved.

$ bx iam space SpaceName --guid
667fadfc-jhtg-1234-9f0e-cf4123451095

Space GUIDs must be prefixed with s- to identify a space in the scope parameter.

Passing this GUID as the scope parameter would therefore use the following value.

s-667fadfc-jhtg-1234-9f0e-cf4123451095

authentication

The monitoring service supports using one of the following authentication tokens.

• UAA Token
• IAM Token
• API Key

api

constructor

const Monitoring = require('ibm-cloud-monitoring')

const client = new Monitoring({
  host: 'metrics.ng.bluemix.net'
  scope: 's-<SPACE_GUID>',
  // plus one of the following auth parameters...
  api_key: 'API_KEY' // OR...
  iam_token: 'IAM_TOKEN' // OR...
  uaa_token: 'UAA_TOKEN'
})

The following constructor parameters are supported.

• host - Host name for the IBM Cloud Monitoring service.
• scope - Scope identifier must be set to space GUID for monitoring instance.
• api_key - IBM Cloud API Key
• iam_token - IBM Cloud IAM token
• uaa_token - IBM Cloud UAA token

methods

list metrics

client.list()
client.list('metric.name.*')

parameters

The method takes a single string parameter for the metric query path to search. This value defaults to '*'.

returns

Promise with Array of metric labels from JSON response.

retrieve metrics

client.retrieve({
  target: 'metric.name.*'
})

parameters

The method takes a single object parameter with values for the retrieval operation.

This parameter must have a target property, containing metric labels to retrieve. It also supports the from and until properties to select the search time.

returns

Promise with Array of metrics and data points from JSON response.

save metrics

// save single metric value
client.save({ name: 'metric.name.label', value: 0.05 })

// save multiple metric values
client.save([
  { name: 'metric.name.label', value: 0.05 },
  { name: 'metric.name.foo', value: 0.15 },
  { name: 'metric.name.bar', value: 0.25 }
])

parameters

This method takes a single parameter with metric values to save. Metric values must be an object with the name and value properties. An optional timestamp property is also supported on metric values.

Multiple metric values can be saved by passing in an array of metric values.

returns

Promise with no content to indicate when save operation has finished.

bugs / feedback / issues?

Please open issues in the open-source repository on Github if you have problems.