sls-dev-tools/lib/services/lambdaMetrics.js

The Dev Tools for the Serverless World

"use strict";

const getLambdaMetrics = (application, functionName, cloudwatch) => {
  application.endTime = new Date();
  const params = {
    StartTime: application.startTime,
    EndTime: application.endTime,
    MetricDataQueries: [{
      Id: "errors",
      MetricStat: {
        Metric: {
          Dimensions: [{
            Name: "FunctionName",
            Value: functionName
          }, {
            Name: "Resource",
            Value: functionName
          }],
          MetricName: "Errors",
          Namespace: "AWS/Lambda"
        },
        Period: application.interval,
        Stat: "Sum"
      },
      ReturnData: true
    }, {
      Id: "invocations",
      MetricStat: {
        Metric: {
          Dimensions: [{
            Name: "FunctionName",
            Value: functionName
          }, {
            Name: "Resource",
            Value: functionName
          }],
          MetricName: "Invocations",
          Namespace: "AWS/Lambda"
        },
        Period: application.interval,
        Stat: "Sum"
      },
      ReturnData: true
    }]
  };
  return cloudwatch.getMetricData(params).promise().catch(error => console.error(error));
};

module.exports = {
  getLambdaMetrics
};