UploadLambdaFunction_test.go - AWS Code Sample

UploadLambdaFunction_test.go

/* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. This file is licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with the License. A copy of the License is located at http://aws.amazon.com/apache2.0/ This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package main import ( "encoding/json" "errors" "io/ioutil" "testing" "time" "github.com/google/uuid" "github.com/aws/aws-sdk-go/aws" "github.com/aws/aws-sdk-go/aws/session" "github.com/aws/aws-sdk-go/service/iam" "github.com/aws/aws-sdk-go/service/lambda" "github.com/aws/aws-sdk-go/service/s3" "github.com/aws/aws-sdk-go/service/s3/s3manager" ) type Config struct { Bucket string `json:"Bucket"` Function string `json:"Function"` Handler string `json:"Handler"` RoleARN string `json:"RoleARN"` Runtime string `json:"Runtime"` ZipFile string `json:"ZipFile"` Cleanup bool `json:"Cleanup"` } var configFileName = "config.json" var globalConfig Config func PopulateConfiguration(t *testing.T) error { content, err := ioutil.ReadFile(configFileName) if err != nil { return err } text := string(content) err = json.Unmarshal([]byte(text), &globalConfig) if err != nil { return err } t.Log("Default config.json values:") t.Log("Bucket: " + globalConfig.Bucket) t.Log("Function: " + globalConfig.Function) t.Log("Handler: " + globalConfig.Handler) t.Log("RoleARN: " + globalConfig.RoleARN) t.Log("Runtime: " + globalConfig.Runtime) t.Log("ZipFile: " + globalConfig.ZipFile) return nil } func createRole(sess *session.Session, roleName *string) (*iam.CreateRoleOutput, error) { svc := iam.New(sess) trustRelationship := []byte(`{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": { "Service": "lambda.amazonaws.com" }, "Action": "sts:AssumeRole" } ] }`) trustPolicy := string(trustRelationship[:]) result, err := svc.CreateRole(&iam.CreateRoleInput{ AssumeRolePolicyDocument: aws.String(trustPolicy), RoleName: roleName, }) if err != nil { return nil, err } _, err = svc.AttachRolePolicy(&iam.AttachRolePolicyInput{ PolicyArn: aws.String("arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"), RoleName: roleName, }) if err != nil { return nil, err } _, err = svc.AttachRolePolicy(&iam.AttachRolePolicyInput{ PolicyArn: aws.String("arn:aws:iam::aws:policy/AWSXRayDaemonWriteAccess"), RoleName: roleName, }) if err != nil { return nil, err } return result, nil } func createBucket(sess *session.Session, bucket *string) error { // Create S3 service client svc := s3.New(sess) // Create the S3 Bucket _, err := svc.CreateBucket(&s3.CreateBucketInput{ Bucket: bucket, }) if err != nil { return err } // Wait until bucket is created before finishing err = svc.WaitUntilBucketExists(&s3.HeadBucketInput{ Bucket: bucket, }) if err != nil { return err } return nil } func deleteFunction(sess *session.Session, function *string) error { svc := lambda.New(sess) _, err := svc.DeleteFunction(&lambda.DeleteFunctionInput{ FunctionName: function, }) if err != nil { return err } return nil } func deleteRole(sess *session.Session, role *string) error { svc := iam.New(sess) _, err := svc.DeleteRole(&iam.DeleteRoleInput{ RoleName: role, }) if err != nil { return err } return nil } func deleteBucket(sess *session.Session, bucket *string) error { // Create S3 service client svc := s3.New(sess) // Delete all objects in the bucket iter := s3manager.NewDeleteListIterator(svc, &s3.ListObjectsInput{ Bucket: bucket, }) if err := s3manager.NewBatchDeleteWithClient(svc).Delete(aws.BackgroundContext(), iter); err != nil { return err } // Delete the S3 Bucket _, err := svc.DeleteBucket(&s3.DeleteBucketInput{ Bucket: bucket, }) if err != nil { return err } // Wait until bucket is gone before finishing err = svc.WaitUntilBucketNotExists(&s3.HeadBucketInput{ Bucket: bucket, }) if err != nil { return err } return nil } func TestLambdaUpload(t *testing.T) { thisTime := time.Now() nowString := thisTime.Format("2006-01-02 15:04:05 Monday") t.Log("Starting unit test at " + nowString) err := PopulateConfiguration(t) if err != nil { t.Fatal(err) } // Initialize a session that the SDK will use to load // credentials from the shared credentials file ~/.aws/credentials. sess := session.Must(session.NewSessionWithOptions(session.Options{ SharedConfigState: session.SharedConfigEnable, })) id := uuid.New() if globalConfig.Runtime == "" { globalConfig.Runtime = "go1.x" } roleCreated := false roleName := "" if globalConfig.RoleARN == "" { roleName = "my-lambda-role-" + id.String() result, err := createRole(sess, &roleName) if err != nil { t.Fatal(err) } globalConfig.RoleARN = *result.Role.Arn roleCreated = true t.Log("Created role ") } if globalConfig.Handler == "" { globalConfig.Handler = "main" } bucketCreated := false if globalConfig.Bucket == "" { globalConfig.Bucket = "my-lambda-bucket-" + id.String() err := createBucket(sess, &globalConfig.Bucket) if err != nil { t.Fatal(err) } t.Log("Created bucket " + globalConfig.Bucket) bucketCreated = true } functionCreated := false if globalConfig.Function == "" { globalConfig.Function = "my-lambda-function-" + id.String() functionCreated = true } if globalConfig.ZipFile == "" { globalConfig.ZipFile = "main" } if globalConfig.Bucket == "" || globalConfig.Function == "" || globalConfig.Handler == "" || globalConfig.RoleARN == "" || globalConfig.Runtime == "" || globalConfig.ZipFile == "" { t.Log("Bucket: " + globalConfig.Bucket) t.Log("Function: " + globalConfig.Function) t.Log("Handler: " + globalConfig.Handler) t.Log("RoleARN: " + globalConfig.RoleARN) t.Log("Runtime: " + globalConfig.Runtime) t.Log("ZipFile: " + globalConfig.ZipFile) msg := "You must supply a zip file name, bucket name, function name, handler (package) name, role ARN, and runtime value." t.Fatal(errors.New(msg)) } result, err := UploadFunction(sess, &globalConfig.ZipFile, &globalConfig.Bucket, &globalConfig.Function, &globalConfig.Handler, &globalConfig.RoleARN, &globalConfig.Runtime) if err != nil { t.Fatal(err) } t.Log("Lambda function ARN: " + *result.FunctionArn) if globalConfig.Cleanup { if functionCreated { err := deleteFunction(sess, &globalConfig.Function) if err != nil { t.Log("You'll have to delete function " + globalConfig.Function + " yourself") t.Fatal(err) } t.Log("Deleted function " + globalConfig.Function) } if roleCreated { err := deleteRole(sess, &roleName) if err != nil { t.Log("You'll have to delete role " + roleName + " yourself") } t.Log("Deleted role " + roleName) } if bucketCreated { err := deleteBucket(sess, &globalConfig.Bucket) if err != nil { t.Log("You'll have to delete the bucket " + globalConfig.Bucket + " yourself") t.Fatal(err) } t.Log("Deleted bucket " + globalConfig.Bucket) } } }