add CloudWatch and SNS (#57)

* add CloudWatch and SNS

* rename as federation

* rename dashboard item

* fix sns name in alarm_action

* update changelog

Author: lingwm

CHANGELOG.md

@@ -3,6 +3,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [1.1.1] - 2019-04-09
+
+### Added
+- Add CloudWatch and SNS - see [#57](https://github.com/ExpediaGroup/apiary-federation/pull/57).
+
+
 ## [1.1.0] - 2019-04-05
 
 ### Added

cloudwatch.tf

@@ -8,3 +8,89 @@ resource "aws_cloudwatch_log_group" "waggledance_ecs" {
   name = "${local.instance_alias}"
   tags = "${var.tags}"
 }
+
+resource "aws_cloudwatch_dashboard" "apiary_federation" {
+  dashboard_name = "${local.instance_alias}-${var.aws_region}"
+
+  dashboard_body = <<EOF
+  {
+    "widgets": [
+      {
+         "type":"metric",
+         "width":12,
+         "height":6,
+         "properties":{
+            "metrics":[
+               [ "AWS/ECS", "CPUUtilization", "ServiceName", "${local.instance_alias}-service", "ClusterName", "${local.instance_alias}" ]
+            ],
+            "period":300,
+            "stat":"Average",
+            "region":"${var.aws_region}",
+            "title":"WaggleDance ECS CPU Utilization"
+         }
+      },
+      {
+         "type":"metric",
+         "width":12,
+         "height":6,
+         "properties":{
+            "metrics":[
+               [ "AWS/ECS", "MemoryUtilization", "ServiceName", "${local.instance_alias}-service", "ClusterName", "${local.instance_alias}" ]
+            ],
+            "period":300,
+            "stat":"Average",
+            "region":"${var.aws_region}",
+            "title":"WaggleDance ECS Memory Utilization"
+         }
+      }
+    ]
+  }
+EOF
+}
+
+
+locals {
+  alerts = [
+    {
+      alarm_name  = "${local.instance_alias}-cpu"
+      namespace   = "AWS/ECS"
+      metric_name = "CPUUtilization"
+      threshold   = "80"
+    },
+    {
+      alarm_name  = "${local.instance_alias}-memory"
+      namespace   = "AWS/ECS"
+      metric_name = "MemoryUtilization"
+      threshold   = "70"
+    }
+  ]
+
+  dimensions = [
+    {
+      ClusterName = "${local.instance_alias}"
+      ServiceName = "${local.instance_alias}-service"
+    },
+    {
+      ClusterName = "${local.instance_alias}"
+      ServiceName = "${local.instance_alias}-service"
+    }
+  ]
+}
+
+
+resource "aws_cloudwatch_metric_alarm" "waggledance_alert" {
+  count               = "${length(local.alerts)}"
+  alarm_name          = "${lookup(local.alerts[count.index],"alarm_name")}"
+  comparison_operator = "${lookup(local.alerts[count.index],"comparison_operator","GreaterThanOrEqualToThreshold")}"
+  metric_name         = "${lookup(local.alerts[count.index],"metric_name")}"
+  namespace           = "${lookup(local.alerts[count.index],"namespace")}"
+  period              = "${lookup(local.alerts[count.index],"period","120")}"
+  evaluation_periods  = "${lookup(local.alerts[count.index],"evaluation_periods","2")}"
+  statistic           = "Average"
+  threshold           = "${lookup(local.alerts[count.index],"threshold")}"
+
+  #alarm_description         = ""
+  insufficient_data_actions = []
+  dimensions                = "${local.dimensions[count.index]}"
+  alarm_actions             = ["${aws_sns_topic.apiary_federation_ops_sns.arn}"]
+}

sns.tf

@@ -0,0 +1,3 @@
+resource "aws_sns_topic" "apiary_federation_ops_sns" {
+  name = "${local.instance_alias}-operational-events"
+}