带有 Json 数组拆分的 Apache Camel [英] Apache Camel with Json Array split

问题描述

我有一个骆驼应用程序，它从一个大小为 13000 的 jms 队列接收一个 json 数组请求，json 数组请求的结构如下.我想使用一组 5 来流式传输和拆分 json 数组.例如，如果我收到一个大小为 100 的 json 数组，我想将其分组为 5 并将其拆分为 20 个请求.是否有内置的骆驼功能来分组和拆分 json 数组，还是我需要编写自定义拆分器?

I have a camel application which receives a json array request from a jms queue upto size 13000,the structure of the json array request is as below. I would like to stream and split the json array with a group of 5. For example if I receive a json array of size 100 I would like to group as 5 and split it as 20 requests. Is there a inbuilt camel functionality to group and split json array or do I need to write a custom splitter?

我使用的是骆驼 2.17 版本.

I'm using camel 2.17 version.

示例 json 数组:

Sample json array:

[{
    "name": "Ram",
    "email": "[e-mail]",
    "age": 23
 }, {
    "name": "Shyam",
    "email": "[e-mail]",
    "age": 28
 }, {
    "name": "John",
    "email": "[e-mail]",
    "age": 33
 }, {
    "name": "Bob",
    "email": "[e-mail]",
    "age": 41
 }, {
    "name": "test1",
    "email": "[e-mail]",
    "age": 41
 }, {
    "name": "test2",
    "email": "[e-mail]",
    "age": 41
 }, {
    "name": "test3",
    "email": "[e-mail]",
    "age": 41
 }, {
    "name": "test4",
    "email": "[e-mail]",
    "age": 41
}]

推荐答案

你可以试试这样的:

@Override
protected RoutesBuilder createRouteBuilder() throws Exception {
    return new RouteBuilder() {

        @Override
        public void configure() throws Exception {
            from("direct:start")
                .split().jsonpath("$")
                    .streaming()
                    .aggregate(AggregationStrategies.groupedExchange())
                    .constant("true")
                    .completionSize(5)
                    .completionTimeout(1000)
                    .log("${body}")
                .to("mock:result");
        }
    };
}

如果消息的大小不是 5 的倍数，则路由应在聚合前等待 1 秒并继续.使用您的输入，结果将是分别包含 5 项和 3 项的两条消息:

If the message doesn't have a size multiple of five, the route should wait 1 sec before aggregating and go ahead. Using your input, the result will be two messages with 5 and 3 items respectively:

INFO 5419 --- [           main] route1                                   : List<Exchange>(5 elements)
INFO 5419 --- [eTimeoutChecker] route1                                   : List<Exchange>(3 elements) 

可以查看完整示例在这里.

根据要求，一个 Spring DSL 示例:

As requested, a Spring DSL example:

<camel:route>
    <camel:from uri="direct:start" />
    <camel:split streaming="true">
        <camel:jsonpath>$</camel:jsonpath>
        <camel:aggregate completionSize="5"
            completionTimeout="1000" groupExchanges="true">
            <camel:correlationExpression>
                <camel:constant>true</camel:constant>
            </camel:correlationExpression>
            <camel:log message="${body}"></camel:log>
            <camel:to uri="mock:result"></camel:to>
        </camel:aggregate>
    </camel:split>
</camel:route>

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