用ElasticMQ在本地模拟使用AWS的SQS

如果开发使用SQS的功能，应该会遇到如何进行本地测试的问题。

ElasticMQ 实现了Amazon SQS-compatible interface，可以在本地在模拟AWS的SQS进行测试。

本例子主要通过docker启动，并用aws-cli 进行简易测试。

Dockerfile中的内容，主要指定版本等信息，这个例子中使用的是一个较早的版本0.11.0，目前的最新版是1.1.0

FROM java:8

ADD https://s3-eu-west-1.amazonaws.com/softwaremill-public/elasticmq-server-0.11.0.jar /elasticmq/elasticmq-server-0.11.0.jar
EXPOSE 9324
ENTRYPOINT ["java","-jar","/elasticmq/elasticmq-server-0.11.0.jar"]

编译image

$ docker build -t rand/elasticmq:0.11.0 .
[+] Building 95.8s (7/7) FINISHED                                                                           
 => [internal] load build definition from Dockerfile                                                   0.1s
 => => transferring dockerfile: 270B                                                                   0.0s
 => [internal] load .dockerignore                                                                      0.0s
 => => transferring context: 2B                                                                        0.0s
 => [internal] load metadata for docker.io/library/java:8                                              0.0s
 => https://s3-eu-west-1.amazonaws.com/softwaremill-public/elasticmq-server-0.11.0.jar                 0.0s
 => [1/2] FROM docker.io/library/java:8                                                                0.1s
 => => resolve docker.io/library/java:8                                                                0.0s
 => [2/2] ADD https://s3-eu-west-1.amazonaws.com/softwaremill-public/elasticmq-server-0.11.0.jar /ela  0.1s
 => exporting to image                                                                                 0.1s
 => => exporting layers                                                                                0.1s
 => => writing image sha256:bc0958931c70dc3c69047c445c84ce83161245b85611b76713e438c3c9634c19           0.0s
 => => naming to docker.io/rand/elasticmq:0.11.0                                                       0.0s

 启动

docker run -d --name=elasticmq -p 9324:9324 rand/elasticmq:0.11.0

67c25dd09eb0808dd0518ba4298ff7a38c354e73a9d670bf9d850e5ad12a89fb

 

在本地使用aws命令的前提，需要首先安装好aws-cli，并且设置好configure信息

确认一下是否有Q存在，因为刚刚启动，应该是什么都没有的。

$ aws sqs list-queues --endpoint-url http://localhost:9324

创建一个测试的Q

$ aws sqs create-queue --queue-name test-queue --endpoint-url http://localhost:9324
{
    "QueueUrl": "http://localhost:9324/queue/test-queue"
}

再次确认Q是否创建

$ aws sqs list-queues --endpoint-url http://localhost:9324
{
    "QueueUrls": [
        "http://localhost:9324/queue/test-queue"
    ]
}

向Q中发送消息

$ aws sqs send-message --queue-url http://localhost:9324/queue/test-queue --message-body "Information about the largest city in Any Region." --endpoint-url http://localhost:9324
{
    "MD5OfMessageBody": "51b0a3256d59467f973009b739163aa0",
    "MD5OfMessageAttributes": "d41d8cd98f00b204e9800998ecf8427e",
    "MessageId": "2f2af1fc-dbf7-40a6-8783-756181eeb737"
}

从Q中接受消息

$ aws sqs receive-message --queue-url http://localhost:9324/queue/test-queue --endpoint-url http://localhost:9324
{
    "Messages": [
        {
            "MessageId": "2f2af1fc-dbf7-40a6-8783-756181eeb737",
            "ReceiptHandle": "2f2af1fc-dbf7-40a6-8783-756181eeb737#0893169f-63c7-47ef-bde2-5ad26fad7e1d",
            "MD5OfBody": "51b0a3256d59467f973009b739163aa0",
            "Body": "Information about the largest city in Any Region.",
            "MD5OfMessageAttributes": "d41d8cd98f00b204e9800998ecf8427e"
        }
    ]
}