add lambda insights for enhanced metrics

Signed-off-by: Tommy Li <[email protected]>

Author: tommyzli

Diff for: README.md

@@ -148,6 +148,7 @@ Only the latest version gets security updates. We won't support older versions.
   * `CWAgent` - CloudWatch agent
   * `ECS/ContainerInsights` - ECS/ContainerInsights (Fargate metrics)
   * `Glue` - AWS Glue Jobs
+  * `LambdaInsights` - Lambda enhanced metrics
 
 ## Feature flags
 

Diff for: examples/lambda-insights.yml

@@ -0,0 +1,27 @@
+apiVersion: v1alpha1
+discovery:
+  jobs:
+    - type: LambdaInsights
+      regions:
+        - us-east-1
+      period: 300
+      length: 300
+      metrics:
+        - name: cpu_total_time
+          statistics: [Average, Maximum]
+        - name: init_duration
+          statistics: [Average, Maximum, Minimum, p90]
+        - name: memory_utilization
+          statistics: [Average, Maximum]
+        - name: used_memory_max
+          statistics: [Average, Maximum]
+        - name: rx_bytes
+          statistics: [Sum]
+        - name: tx_bytes
+          statistics: [Sum]
+        - name: tmp_used
+          statistics: [Average, Maximum]
+        - name: total_memory
+          statistics: [Average, Maximum]
+        - name: total_network
+          statistics: [Sum]

Diff for: pkg/config/services.go

@@ -597,6 +597,16 @@ var SupportedServices = serviceConfigs{
 			regexp.MustCompile(":function:(?P<FunctionName>[^/]+)"),
 		},
 	},
+	{
+		Namespace: "LambdaInsights",
+		Alias:     "lambdainsights",
+		ResourceFilters: []*string{
+			aws.String("lambda:function"),
+		},
+		DimensionRegexps: []*regexp.Regexp{
+			regexp.MustCompile(":function:(?P<FunctionName>[^/]+)"),
+		},
+	},
 	{
 		Namespace: "AWS/Logs",
 		Alias:     "logs",