Initial commit

Author: PaulMaddox

buildspec.yml

@@ -0,0 +1,56 @@
+version: 0.2
+
+env:
+  variables:
+    # This S3 bucket will be used to store the packaged Lambda deployment bundle.
+    # Make sure to provide a valid S3 bucket name (it must exist already).
+    # The AWS CodeBuild IAM role must allow write access to it.
+    S3_BUCKET: "pmaddox-public2"
+    PACKAGE: "github.com/aws-samples/lambda-go-samples"
+
+phases:
+
+  install:
+    commands:
+
+      # AWS Codebuild Go images use /go for the $GOPATH so let's copy our 
+      # application source code into that directory structure.
+      - mkdir -p "/go/src/$(dirname ${PACKAGE})"
+      - ln -s "${CODEBUILD_SRC_DIR}" "/go/src/${PACKAGE}" 
+      
+      # Print all environment variables (handy for AWS CodeBuild logs)
+      - env
+
+      # Install golint
+      - go get -u github.com/golang/lint/golint
+
+  pre_build: 
+    commands:
+
+      # Make sure we're in the project directory within our GOPATH
+      - cd "/go/src/${PACKAGE}"
+
+      # Fetch all dependencies
+      - go get ./...
+
+      # Ensure code passes all lint tests
+      - golint -set_exit_status
+
+      # Check the Go code for common problems with 'go vet'
+      - go vet .
+
+      # Run all tests included with our application
+      - go test .
+
+  build:
+    commands:
+
+      # Build our go application
+      - go build -o main
+
+      # Package our application with AWS SAM
+      - aws cloudformation package --template-file template.yml --s3-bucket ${S3_BUCKET} --output-template-file packaged.yml
+
+artifacts:
+  files:
+    - packaged.yml

main.go

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+
+package main
+
+import (
+    "errors"
+    "log"
+
+    "github.com/aws/aws-lambda-go/events"
+    "github.com/aws/aws-lambda-go/lambda"
+)
+
+var (
+    // ErrNameNotProvided is thrown when a name is not provided
+    ErrNameNotProvided = errors.New("no name was provided in the HTTP body")
+)
+
+// Handler is your Lambda function handler
+// It uses Amazon API Gateway request/responses provided by the aws-lambda-go/events package,
+// However you could use other event sources (S3, Kinesis etc), or JSON-decoded primitive types such as 'string'.
+func Handler(request events.APIGatewayProxyRequest) (events.APIGatewayProxyResponse, error) {
+
+    // stdout and stderr are sent to AWS CloudWatch Logs
+    log.Printf("Processing Lambda request %s\n", request.RequestContext.RequestID)
+
+    // If no name is provided in the HTTP request body, throw an error
+    if len(request.Body) < 1 {
+        return events.APIGatewayProxyResponse{}, ErrNameNotProvided
+    }
+
+    return events.APIGatewayProxyResponse{
+        Body:       "Hello " + request.Body,
+        StatusCode: 200,
+    }, nil
+
+}
+
+func main() {
+    lambda.Start(Handler)
+}

main_test.go

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+package main_test
+
+import (
+	"testing"
+
+	main "github.com/aws-samples/lambda-go-samples"
+
+	"github.com/aws/aws-lambda-go/events"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestHandler(t *testing.T) {
+
+	tests := []struct {
+		request events.APIGatewayProxyRequest
+		expect  string
+		err     error
+	}{
+		{
+			// Test that the handler responds with the correct response
+			// when a valid name is provided in the HTTP body
+			request: events.APIGatewayProxyRequest{Body: "Paul"},
+			expect:  "Hello Paul",
+			err:     nil,
+		},
+		{
+			// Test that the handler responds ErrNameNotProvided
+			// when no name is provided in the HTTP body
+			request: events.APIGatewayProxyRequest{Body: ""},
+			expect:  "",
+			err:     main.ErrNameNotProvided,
+		},
+	}
+
+	for _, test := range tests {
+		response, err := main.Handler(test.request)
+		assert.IsType(t, test.err, err)
+		assert.Equal(t, test.expect, response.Body)
+	}
+
+}

template.yml

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+AWSTemplateFormatVersion: 2010-09-09
+Transform: AWS::Serverless-2016-10-31
+
+Resources:
+  HelloFunction:
+    Type: AWS::Serverless::Function
+    Properties:
+      Handler: main
+      Runtime: go1.x
+      Events:
+        GetEvent:
+          Type: Api
+          Properties:
+            Path: /
+            Method: post