ReceiveLPMessage_test.go - AWS Code Sample

ReceiveLPMessage_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 { Duration int64 `json:"Duration"` Message string `json:"Message"` Queue string `json:"Queue"` WaitTime int64 `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.Duration < 1 { globalConfig.Duration = 1 } if globalConfig.Duration > 12*60*60 { globalConfig.Duration = 12 * 60 * 60 } if globalConfig.WaitTime < 0 { globalConfig.WaitTime = 0 } if globalConfig.WaitTime > 20 { globalConfig.WaitTime = 20 } if globalConfig.Message == "" { globalConfig.Message = "Hello world" } t.Log("Duration (seconds): " + strconv.Itoa(int(globalConfig.Duration))) t.Log("Message: " + globalConfig.Message) t.Log("Queue: " + globalConfig.Queue) t.Log("WaitTime (seconds): " + strconv.Itoa(int(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 getQueueURL(sess *session.Session, queue *string) (string, error) { // Create an SQS service client svc := sqs.New(sess) result, err := svc.GetQueueUrl(&sqs.GetQueueUrlInput{ QueueName: queue, }) 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, message *string) (string, error) { // Create an SQS service client svc := sqs.New(sess) result, err := svc.SendMessage(&sqs.SendMessageInput{ DelaySeconds: aws.Int64(10), MessageBody: message, QueueUrl: queueURL, }) if err != nil { return "", err } return *result.MessageId, nil } func deleteQueue(sess *session.Session, queueURL *string) error { // Create an SQS service client svc := sqs.New(sess) _, err := svc.DeleteQueue(&sqs.DeleteQueueInput{ QueueUrl: queueURL, }) if err != nil { return err } return nil } func TestReceiveLPMessages(t *testing.T) { thisTime := time.Now() nowString := thisTime.Format("20060102150405") t.Log("Starting unit test at " + nowString) 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, })) if globalConfig.Message == "" { globalConfig.Message = "Sent " + thisTime.Format("2006-01-02 15:04:05 Monday") } // If we create a queue, we also need to delete it 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) queueCreated = true } else { queueURL, err = getQueueURL(sess, &globalConfig.Queue) if err != nil { t.Fatal(err) } } // Make sure it's an LP queue err = configureLPQueue(sess, &queueURL, int(globalConfig.WaitTime)) if err != nil { t.Fatal(err) } msgID, err := sendMessage(sess, &queueURL, &globalConfig.Message) if err != nil { t.Fatal(err) } t.Log("Sent message to queue " + globalConfig.Queue) msgs, err := GetLPMessages(sess, &queueURL, &globalConfig.WaitTime) if err != nil { t.Fatal(err) } numMsgs := len(msgs) if numMsgs > 0 { t.Log("Got " + strconv.Itoa(numMsgs) + " message(s)") foundMsg := false t.Log("Message IDs:") for _, msg := range msgs { t.Log(" " + *msg.MessageId) if msgID == *msg.MessageId { t.Log("Got message: " + *msg.Body) foundMsg = true break } } if foundMsg { t.Log("Found sent message") } else { t.Log("Did NOT find message") } } else { t.Log("Did not get any messages") } 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) } }