Added dashboard

.gitignore

@@ -37,3 +37,4 @@ terraform.rc
 test/
 **/node_modules/*
 .vscode/
+vegeta*
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deploy/dashboard.tf

+resource "aws_cloudwatch_dashboard" "main" {
+  dashboard_name = "${local.prefix}-main"
+  dashboard_body = templatefile("${path.module}/templates/dashboards/dashboard.json.tpl",
+    {
+      lambda_names        = values(aws_lambda_function.crud)[*].function_name
+      dynamodb_table_name = aws_dynamodb_table.main.name
+      apigw_stage_name    = aws_api_gateway_stage.main.stage_name
+      apigw_name          = aws_api_gateway_rest_api.main.name
+      aws_region          = var.aws_region
+  })
+}
+
+output "dashboard_json" {
+  value = aws_cloudwatch_dashboard.main.dashboard_body
+}
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deploy/templates/dashboards/dashboard.json.tpl

+{
+    "widgets": [
+        {
+            "height": 3,
+            "width": 24,
+            "y": 0,
+            "x": 0,
+            "type": "text",
+            "properties": {
+                "markdown": "\n# API Gateway\n"
+            }
+        },
+        {
+            "height": 3,
+            "width": 24,
+            "y": 15,
+            "x": 0,
+            "type": "text",
+            "properties": {
+                "markdown": "\n# Lambdas\n"
+            }
+        },
+        {
+            "height": 3,
+            "width": 24,
+            "y": 29,
+            "x": 0,
+            "type": "text",
+            "properties": {
+                "markdown": "\n# DynamoDB\n"
+            }
+        },
+        {
+            "height": 6,
+            "width": 12,
+            "y": 3,
+            "x": 0,
+            "type": "metric",
+            "properties": {
+                "metrics": [
+                    [ { "expression": "100*(m1/m2)", "label": "Expression1", "id": "e1", "region": "eu-west-1" } ],
+                    [ "AWS/ApiGateway", "4XXError", "ApiName", "${apigw_name}", "Stage", "${apigw_stage_name}", { "id": "m1", "visible": false } ],
+                    [ ".", "Count", ".", ".", ".", ".", { "id": "m2", "visible": false } ]
+                ],
+                "view": "timeSeries",
+                "stacked": false,
+                "region": "eu-west-1",
+                "period": 60,
+                "title": "Proportion of 4XX errors",
+                "stat": "Sum"
+            }
+        },
+        {
+            "height": 6,
+            "width": 12,
+            "y": 3,
+            "x": 12,
+            "type": "metric",
+            "properties": {
+                "metrics": [
+                    [ { "expression": "100*(m1/m2)", "label": "Expression1", "id": "e1", "region": "eu-west-1" } ],
+                    [ "AWS/ApiGateway", "5XXError", "ApiName", "${apigw_name}", "Stage", "${apigw_stage_name}", { "id": "m1", "visible": false } ],
+                    [ ".", "Count", ".", ".", ".", ".", { "id": "m2", "visible": false } ]
+                ],
+                "view": "timeSeries",
+                "stacked": false,
+                "region": "eu-west-1",
+                "period": 60,
+                "title": "Proportion of 5XX errors",
+                "stat": "Sum"
+            }
+        },
+        {
+            "height": 6,
+            "width": 12,
+            "y": 9,
+            "x": 0,
+            "type": "metric",
+            "properties": {
+                "view": "timeSeries",
+                "stacked": false,
+                "metrics": [
+                    [ "AWS/ApiGateway", "Count", "ApiName", "${apigw_name}", "Stage", "${apigw_stage_name}" ]
+                ],
+                "region": "${aws_region}",
+                "title":"Number of requests",
+                "period": 60,
+                "stat":"Sum"
+            }
+        },
+        {
+            "height": 6,
+            "width": 12,
+            "y": 18,
+            "x": 0,
+            "type": "metric",
+            "properties": {
+                "view": "timeSeries",
+                "stacked": false,
+                "metrics": ${jsonencode(
+                    [
+                        for name in lambda_names : ["AWS/Lambda", "Throttles", "FunctionName", "${name}"]
+                    ])
+                },
+                "region": "${aws_region}",
+                "period": 60
+            }
+        },
+        {
+            "height": 6,
+            "width": 12,
+            "y": 18,
+            "x": 12,
+            "type": "metric",
+            "properties": {
+                "view": "timeSeries",
+                "stacked": false,
+                "metrics": ${jsonencode(
+                    [
+                        for name in lambda_names : ["AWS/Lambda", "Invocations", "FunctionName", "${name}"]
+                    ])
+                },
+                "region": "${aws_region}",
+                "period": 60
+            }
+        },
+        {
+            "height": 6,
+            "width": 12,
+            "y": 24,
+            "x": 0,
+            "type": "metric",
+            "properties": {
+                "view": "timeSeries",
+                "stacked": false,
+                "metrics": ${jsonencode(
+                    [
+                        for name in lambda_names : ["LambdaInsights", "memory_utilization", "function_name", "${name}"]
+                    ])
+                },
+                "region": "${aws_region}",
+                "period":60
+            }
+        },
+        {
+            "height": 6,
+            "width": 12,
+            "y": 33,
+            "x": 0,
+            "type": "metric",
+            "properties": {
+                "view": "timeSeries",
+                "stacked": false,
+                "metrics": [
+                    [ "AWS/DynamoDB", "ConsumedWriteCapacityUnits", "TableName", "${dynamodb_table_name}" ],
+                    [ ".", "ProvisionedWriteCapacityUnits", ".", "." ]
+                ],
+                "region": "${aws_region}",
+                "period":60
+            }
+        },
+        {
+            "height": 6,
+            "width": 12,
+            "y": 33,
+            "x": 12,
+            "type": "metric",
+            "properties": {
+                "view": "timeSeries",
+                "stacked": false,
+                "metrics": [
+                    [ "AWS/DynamoDB", "ConsumedReadCapacityUnits", "TableName", "${dynamodb_table_name}" ],
+                    [ ".", "ProvisionedWriteCapacityUnits", ".", "." ]
+                ],
+                "region": "${aws_region}",
+                "period": 60
+            }
+        }
+    ]
+}
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