ChangeMsgVisibility_test.go - AWS Code Sample

ChangeMsgVisibility_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" "io/ioutil" "strconv" "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/sqs" ) // Config defines a set of configuration values type Config struct { Queue string `json:"Queue"` Visibility int64 `json:"Visibility"` WaitTime int `json:"WaitTime"` } // configFile defines the name of the file containing configuration values var configFileName = "config.json" // globalConfig contains the configuration values var globalConfig Config func populateConfiguration(t *testing.T) error { // Get configuration from config.json // Get entire file as a JSON string content, err := ioutil.ReadFile(configFileName) if err != nil { return err } // Convert []byte to string text := string(content) // Marshall JSON string in text into global struct err = json.Unmarshal([]byte(text), &globalConfig) if err != nil { return err } if globalConfig.Visibility < 0 { globalConfig.Visibility = 0 } if globalConfig.Visibility > 12*60*60 { // 12 hours globalConfig.Visibility = 12 * 60 * 60 } if globalConfig.WaitTime < 0 { globalConfig.WaitTime = 0 } if globalConfig.WaitTime > 20 { globalConfig.WaitTime = 20 } t.Log("Queue: " + globalConfig.Queue) t.Log("Visibility: " + strconv.Itoa(int(globalConfig.Visibility))) t.Log("WaitTime: " + strconv.Itoa(globalConfig.WaitTime)) return nil } func createQueue(sess *session.Session, queue *string) (string, error) { // Create an SQS service client svc := sqs.New(sess) result, err := svc.CreateQueue(&sqs.CreateQueueInput{ QueueName: queue, Attributes: map[string]*string{ "DelaySeconds": aws.String("60"), "MessageRetentionPeriod": aws.String("86400"), }, }) if err != nil { return "", err } return *result.QueueUrl, nil } func configureLPQueue(sess *session.Session, queueURL *string, timeout int) error { // Create an SQS service client svc := sqs.New(sess) _, err := svc.SetQueueAttributes(&sqs.SetQueueAttributesInput{ QueueUrl: queueURL, Attributes: aws.StringMap(map[string]string{ "ReceiveMessageWaitTimeSeconds": strconv.Itoa(timeout), }), }) if err != nil { return err } return nil } func sendMessage(sess *session.Session, queueURL string) error { // Create an SQS service client svc := sqs.New(sess) currentTime := time.Now() _, err := svc.SendMessage(&sqs.SendMessageInput{ DelaySeconds: aws.Int64(0), MessageBody: aws.String(currentTime.Format("2006-01-02 15:04:05 Monday")), QueueUrl: &queueURL, }) if err != nil { return err } return nil } func receiveMessage(sess *session.Session, queueURL string) (string, error) { // Create an SQS service client svc := sqs.New(sess) result, err := svc.ReceiveMessage(&sqs.ReceiveMessageInput{ AttributeNames: []*string{ aws.String(sqs.MessageSystemAttributeNameSentTimestamp), }, MessageAttributeNames: []*string{ aws.String(sqs.QueueAttributeNameAll), }, QueueUrl: &queueURL, MaxNumberOfMessages: aws.Int64(1), }) if err != nil { return "", err } if len(result.Messages) > 0 { return *result.Messages[0].ReceiptHandle, nil } return "", nil } func deleteMsg(sess *session.Session, url string, handle string) error { svc := sqs.New(sess) _, err := svc.DeleteMessage(&sqs.DeleteMessageInput{ QueueUrl: &url, ReceiptHandle: &handle, }) if err != nil { return err } return nil } func deleteQueue(sess *session.Session, queueURL string) error { // Create an SQS service client svc := sqs.New(sess) _, err := svc.DeleteQueue(&sqs.DeleteQueueInput{ QueueUrl: aws.String(queueURL), }) if err != nil { return err } return nil } func TestChangeVisibility(t *testing.T) { err := populateConfiguration(t) if err != nil { t.Fatal(err) } // Create a session using credentials from ~/.aws/credentials // and the Region from ~/.aws/config sess := session.Must(session.NewSessionWithOptions(session.Options{ SharedConfigState: session.SharedConfigEnable, })) queueCreated := false queueURL := "" if globalConfig.Queue == "" { // Create a unique, random queue name id := uuid.New() globalConfig.Queue = "myqueue-" + id.String() queueURL, err = createQueue(sess, &globalConfig.Queue) if err != nil { t.Fatal(err) } t.Log("Created queue " + globalConfig.Queue) } if globalConfig.WaitTime > 0 { err := configureLPQueue(sess, &queueURL, globalConfig.WaitTime) if err != nil { t.Log("You'll have to delete queue " + globalConfig.Queue + " yourself") t.Fatal(err) } } err = sendMessage(sess, queueURL) if err != nil { t.Log("You'll have to delete queue " + globalConfig.Queue + " yourself") t.Fatal(err) } t.Log("Sent message to queue " + globalConfig.Queue) msgHandle, err := receiveMessage(sess, queueURL) if err != nil { t.Log("You'll have to delete queue " + globalConfig.Queue + " yourself") t.Fatal(err) } if msgHandle != "" { t.Log("Received message") err = SetMsgVisibility(sess, &msgHandle, &queueURL, &globalConfig.Visibility) if err != nil { t.Log("You'll have to delete queue " + globalConfig.Queue + " yourself") t.Fatal(err) } t.Log("Changed message's visibility to " + strconv.Itoa(int(globalConfig.Visibility))) // Delete message err = deleteMsg(sess, queueURL, msgHandle) if err != nil { t.Log("Got an error deleting msg:") t.Fatal(err) } t.Log("Deleted message") } else { t.Log("Did not receive message") } if queueCreated { err = deleteQueue(sess, queueURL) if err != nil { t.Log("You'll have to delete queue " + globalConfig.Queue + " yourself") t.Fatal(err) } t.Log("Deleted queue " + globalConfig.Queue) } }