CODEWITHSUNDEEP
google-cloud-functionsmonitoring
atsag
atsag

Reputation: 93

How can I access Google Cloud Function execution metrics?

I would like to programmatically get metrics relevant to the execution of Google cloud functions (e.g invocations, latency, etc.). Is there a (preferably simple) way to achieve this (e.g through an API)?

Upvotes: 1

Views: 2286

Answers (1)

R. Wright
R. Wright

Reputation: 1035

Cloudfunctions is using Stackdriver to capture and display these metrics. (I assume you're looking for the same metrics that are displayed on each function in the console.) StackDriver has an API and client library where you can pull the metrics. More info on that at https://cloud.google.com/monitoring/docs/reference/libraries#client-libraries-install-nodejs .

Here's a small example of pulling these in node.js

const util = require("util");
// Imports the Google Cloud client library
const monitoring = require("@google-cloud/monitoring");

// Your Google Cloud Platform project ID
const projectId = "<YOUR PROJECT ID>";

// Creates a client
const client = new monitoring.MetricServiceClient({
  keyFilename: "<YOUR CREDENTIALS>"
});

// list of metrics also avaliable at https://cloud.google.com/monitoring/api/metrics_gcp#gcp-cloudfunctions
// list all metrics avaliable
client
  .listMetricDescriptors({
    // name: `projects/${projectId}/monitoredResourceDescriptors/cloud_function`,
    name: `projects/${projectId}`,
    filter: 'metric.type = starts_with("cloudfunctions.googleapis.com")'
  })
  .then(results => {
    console.log(results);
  })
  .catch(err => {
    console.error("ERROR:", err);
  });

const currentTime = new Date();
endTime = currentTime.toISOString();
startTime = new Date(currentTime - 1 * 60 * 60 * 1000).toISOString();
interval = {
  startTime: {
    // Limit results to the last 20 minutes
    seconds: Date.now() / 1000 - 60 * 60
  },
  endTime: {
    seconds: Date.now() / 1000
  }
};

// get the executions accross time
client
  .listTimeSeries({
    name: `projects/${projectId}`,
    filter:
      'metric.type = "cloudfunctions.googleapis.com/function/execution_count" AND resource.label.function_name = "<YOUR FUNCTION NAME>"',
    view: "FULL",
    interval
  })
  .then(results => {
    // console.log(results);
    console.log(util.inspect(results, { showHidden: true, depth: 5 }));
  })
  .catch(err => {
    console.error("ERROR:", err);
  });

Upvotes: 3

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