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)
}
}