simplifying swagger file, implementing different runtimes and handler…

…s for different languages

cli.go

@@ -85,7 +85,7 @@ func runCLI(args []string) {
 				},
 				cli.GenericFlag{
 					Name:  "l, language",
-					Usage: "which language to be used (go, java, node, python, ruby)",
+					Usage: "which language for lambda to be used (go, java, node, python, ruby)",
 					Value: &EnumValue{
 						Enum:    []string{"go", "java", "node", "python", "ruby"},
 						Default: "node",

tmpl-languages.go

@@ -52,7 +52,7 @@ const packageJson = `
 const pythonFunction = `
 import json
 
-def lambda_handler(event, context):
+def handler(event, context):
 
     dict = { "msg" : "hello world" }
     
@@ -94,7 +94,7 @@ type helloWorld struct {
 	Msg string` + "`" + `json:"msg"` + "`" + `
 }
 
-func Handler(ctx context.Context) (Response, error) {
+func handler(ctx context.Context) (Response, error) {
 
 	msg := helloWorld{Msg: "hwllo world"}
 	resp, err := json.Marshal(msg)
@@ -114,7 +114,7 @@ func Handler(ctx context.Context) (Response, error) {
 }
 
 func main() {
-	lambda.Start(Handler)
+	lambda.Start(handler)
 }  
 `
 

tmpl-sam.go

@@ -138,8 +138,12 @@ Resources:
     Type: AWS::Serverless::Function
     Properties:
       CodeUri: src/{{ .LambdaFunctionName }}/app/
-      Handler: recommendations.lambda_handler
-      Runtime: python3.7
+      {{ if and (eq .Language "python")}}Handler: app.handler
+      Runtime: python3.7{{ end }}{{ if and (eq .Language "ruby")}}Handler: app.handler
+      Runtime: ruby2.5{{ end }}{{ if and (eq .Language "node")}}Handler: index.js
+      Runtime: nodejs10.x{{ end }}{{ if and (eq .Language "go")}}Handler: helloworld
+      Runtime: go1.x{{ end }}{{ if and (eq .Language "java")}}Handler: com.api.HelloWorld
+      Runtime: java8{{ end }}
       MemorySize: 512
       Timeout: 5
       Tracing: Active

tmpl-swagger.go

@@ -31,16 +31,10 @@ servers:
     description: Production environment URL
 
 paths:
-  /v1/{{ .LambdaFunctionName }}/{userId}:
+  /v1/{{ .LambdaFunctionName }}:
     get:
       summary: hello world endpoint
       description: outputs hello world
-      parameters:
-        - in: path
-          name: userId
-          schema:
-            type: integer
-          required: true
       responses:
         200:
           description: "OK"