Laravel队列与Amazon SQS设置消息

Question

I am using Laravel to push messages in a Amazon SQS queue.

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Jobs\ImageProcessor;
use Log;


class ImageProcessorController extends Controller
{

  public function processImage(Request $request){


    Log::info($request->all());
    Log::info("Request Cycle with Queues Begins");
    dispatch(new ImageProcessor());
    Log::info("Request Cycle with Queues Ends");
    echo 'image sent to the queue';

  }


}

and the result of this is a message in the queue like this:

   {
"Messages": [
    {
        "Body": "{\"displayName\":\"App\\\\Jobs\\\\ImageProcessor\",\"job\":\"Illuminate\\\\Queue\\\\CallQueuedHandler@call\",\"maxTries\":null,\"timeout\":null,\"timeoutAt\":null,\"data\":{\"commandName\":\"App\\\\Jobs\\\\ImageProcessor\",\"command\":\"O:23:\\\"App\\\\Jobs\\\\ImageProcessor\\\":7:{s:6:\\\"\\u0000*\\u0000job\\\";N;s:10:\\\"connection\\\";N;s:5:\\\"queue\\\";N;s:15:\\\"chainConnection\\\";N;s:10:\\\"chainQueue\\\";N;s:5:\\\"delay\\\";N;s:7:\\\"chained\\\";a:0:{}}\"}}", 
        "Attributes": {
            "ApproximateFirstReceiveTimestamp": "1523631711067", 
            "SenderId": "AIDAJYZES3ADLCLSKMIP2", 
            "ApproximateReceiveCount": "1", 
            "SentTimestamp": "1523631706715"
        }, 
        "ReceiptHandle": "AQEBJFyXHZdHrHLYPSK5Im2+vdXbyrrixqRbAcDVGAGzbs8re6cHIpoz57nW2g2UY+CfkcDsK66rG+qFh4O0vfmAqcc2YCWExZ+J4ixuIKoseTSmCA9ZKHxLOzRDySkDliC4Nvp6G32qh8om3oGTp3eNLMx+ooGuUTfrWipzdM6SesI04Z5fq9P8CWkCKy+Xe7146Y1eJkD68HGrj8yGxlinT5Ian57qQY2GVdXIbZFsTGz6vqB/3WVOvAGmy+b/xMsFD0SNchZUJnFVW7aCmrqKimtXAkuSbDQIhpHGMr2w1iscWtFY5JCvhiPaapkjKcAxf0luR3ygHppt/cBtTr13BNUPMXCohyGc3hdB1/XXcAF0uww+fYvWVQ8IIsYrV5lT2gpYPzg8j+7Zy7Iv1GBlGuZl6lC213AI5w93I+GEmQc=", 
        "MD5OfBody": "3a84984ce57b8d58162017adc4c2b004", 
        "MessageId": "61e4dfba-6794-48f3-a006-9637c6913553"
    }
]
}

as you can see the messages and attributes are set up automagically by laravel. The question is: how can I modify the messages?

Answer 1

$this->dispatch(new ImageProcessor($param1, $param2, ['additional_data' => 'here']));

If you need more data to be sent to the queue handler (ImageProcessor in this case), just add it as parameters. It's going to get automagically, as you say, get serialized, sent and deserialized. If i'm not mistaken, it should even retrieve exact eloquent models at the other end if you pass them.

However, you can't really change the structure of the submitted message, outside of passing along additional data. Question for you is, why would you even want to ?

If you want to send multiple messages in one go, you're gonna have write your own logic for that. Same if you want to consume the queue messages with any other platform other than Laravel.