add mapping for CW direct connect (#1208)

For the connection level metrics just map in the state
as that is the only metrics currently getting produced.

atlas-poller-cloudwatch/src/main/resources/dx.conf

@@ -0,0 +1,84 @@
+
+atlas {
+  cloudwatch {
+
+    // https://docs.aws.amazon.com/directconnect/latest/UserGuide/monitoring-cloudwatch.html
+    dx-connection = {
+      namespace = "AWS/DX"
+      period = 1m
+      end-period-offset = 4
+      period-count = 2
+
+      dimensions = [
+        "ConnectionId"
+      ]
+
+      metrics = [
+        {
+          name = "ConnectionState"
+          alias = "aws.dx.connectionState"
+          conversion = "max"
+        }
+      ]
+    }
+
+    dx-virtual-interface = {
+      namespace = "AWS/DX"
+      period = 1m
+      end-period-offset = 4
+      period-count = 2
+
+      dimensions = [
+        "ConnectionId",
+        "VirtualInterfaceId"
+      ]
+
+      metrics = [
+        {
+          name = "VirtualInterfaceBpsEgress"
+          alias = "aws.dx.virtualInterfaceBits"
+          conversion = "sum"
+          tags = [
+            {
+              key = "id"
+              value = "egress"
+            }
+          ]
+        },
+        {
+          name = "VirtualInterfaceBpsIngress"
+          alias = "aws.dx.virtualInterfaceBits"
+          conversion = "sum"
+          tags = [
+            {
+              key = "id"
+              value = "ingress"
+            }
+          ]
+        },
+        {
+          name = "VirtualInterfacePpsEgress"
+          alias = "aws.dx.virtualInterfacePackets"
+          conversion = "sum"
+          tags = [
+            {
+              key = "id"
+              value = "egress"
+            }
+          ]
+        },
+        {
+          name = "VirtualInterfacePpsIngress"
+          alias = "aws.dx.virtualInterfacePackets"
+          conversion = "sum"
+          tags = [
+            {
+              key = "id"
+              value = "ingress"
+            }
+          ]
+        },
+      ]
+    }
+  }
+}

atlas-poller-cloudwatch/src/main/resources/reference.conf

@@ -234,6 +234,10 @@ atlas {
           name = "Protocol"
           alias = "aws.protocol"
         },
+        {
+          name = "ConnectionId"
+          alias = "aws.connection"
+        }
       ]
 
       // Tags that should get applied to all metrics from cloudwatch.
@@ -263,6 +267,8 @@ atlas {
       "alb-tg-zone",
       "api-gateway",
       "billing",
+      "dx-connection",
+      "dx-virtual-interface",
       "dynamodb-table-1m",
       "dynamodb-table-5m",
       "dynamodb-table-ops",
@@ -303,6 +309,7 @@ atlas {
 include "alb.conf"
 include "api-gateway.conf"
 include "billing.conf"
+include "dx.conf"
 include "dynamodb.conf"
 include "ec2.conf"
 include "elasticache.conf"