Function handleCloudWatch

index.js:230–281

(event, context)

};

var handleCloudWatch = function(event, context) {
  var timestamp = (new Date(event.Records[0].Sns.Timestamp)).getTime()/1000;
  var message = JSON.parse(event.Records[0].Sns.Message);
  var region = event.Records[0].EventSubscriptionArn.split(":")[3];
  var subject = "AWS CloudWatch Notification";
  var alarmName = message.AlarmName;
  var metricName = message.Trigger.MetricName;
  var oldState = message.OldStateValue;
  var newState = message.NewStateValue;
  var alarmDescription = message.AlarmDescription;
  var alarmReason = message.NewStateReason;
  var trigger = message.Trigger;
  var color = "warning";

  if (message.NewStateValue === "ALARM") {
      color = "danger";
  } else if (message.NewStateValue === "OK") {
      color = "good";
  }

  var slackMessage = {
    text: "*" + subject + "*",
    attachments: [
      {
        "color": color,
        "fields": [
          { "title": "Alarm Name", "value": alarmName, "short": true },
          { "title": "Alarm Description", "value": alarmReason, "short": false},
          {
            "title": "Trigger",
            "value": trigger.Statistic + " "
              + metricName + " "
              + trigger.ComparisonOperator + " "
              + trigger.Threshold + " for "
              + trigger.EvaluationPeriods + " period(s) of "
              + trigger.Period + " seconds.",
              "short": false
          },
          { "title": "Old State", "value": oldState, "short": true },
          { "title": "Current State", "value": newState, "short": true },
          {
            "title": "Link to Alarm",
            "value": "https://console.aws.amazon.com/cloudwatch/home?region=" + region + "#alarm:alarmFilter=ANY;name=" + encodeURIComponent(alarmName),
            "short": false
          }
        ],
        "ts":  timestamp
      }
    ]
  };
  return _.merge(slackMessage, baseSlackMessage);
};

var handleAutoScaling = function(event, context) {
  var subject = "AWS AutoScaling Notification"