226.7. 模拟现有端点

可作为 Camel 2.7 提供

Camel 现在允许您在 Camel 路由中自动模拟现有端点。

注意

它的工作原理是 端点仍然在操作中。另一种情况是，注入 Mock 端点并接收消息，然后将消息委派给目标端点。您可以将其视为一种拦截器和委派或端点监听程序。

假设您有以下给定路由：

Route（路由）

@Override
protected RouteBuilder createRouteBuilder() throws Exception {
    return new RouteBuilder() {
        @Override
        public void configure() throws Exception {
            from("direct:start").to("direct:foo").to("log:foo").to("mock:result");

            from("direct:foo").transform(constant("Bye World"));
        }
    };
}

@Override
protected RouteBuilder createRouteBuilder() throws Exception {
    return new RouteBuilder() {
        @Override
        public void configure() throws Exception {
            from("direct:start").to("direct:foo").to("log:foo").to("mock:result");

            from("direct:foo").transform(constant("Bye World"));
        }
    };
}

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然后，您可以使用 Camel 中的 adviceWith 功能模拟从单元测试给定路由中的所有端点，如下所示：

建议通过 模拟所有端点进行建议

public void testAdvisedMockEndpoints() throws Exception {
       // advice the first route using the inlined AdviceWith route builder
       // which has extended capabilities than the regular route builder
       context.getRouteDefinitions().get(0).adviceWith(context, new AdviceWithRouteBuilder() {
           @Override
           public void configure() throws Exception {
               // mock all endpoints
               mockEndpoints();
           }
       });

       getMockEndpoint("mock:direct:start").expectedBodiesReceived("Hello World");
       getMockEndpoint("mock:direct:foo").expectedBodiesReceived("Hello World");
       getMockEndpoint("mock:log:foo").expectedBodiesReceived("Bye World");
       getMockEndpoint("mock:result").expectedBodiesReceived("Bye World");

       template.sendBody("direct:start", "Hello World");

       assertMockEndpointsSatisfied();

       // additional test to ensure correct endpoints in registry
       assertNotNull(context.hasEndpoint("direct:start"));
       assertNotNull(context.hasEndpoint("direct:foo"));
       assertNotNull(context.hasEndpoint("log:foo"));
       assertNotNull(context.hasEndpoint("mock:result"));
       // all the endpoints was mocked
       assertNotNull(context.hasEndpoint("mock:direct:start"));
       assertNotNull(context.hasEndpoint("mock:direct:foo"));
       assertNotNull(context.hasEndpoint("mock:log:foo"));
   }

public void testAdvisedMockEndpoints() throws Exception {
       // advice the first route using the inlined AdviceWith route builder
       // which has extended capabilities than the regular route builder
       context.getRouteDefinitions().get(0).adviceWith(context, new AdviceWithRouteBuilder() {
           @Override
           public void configure() throws Exception {
               // mock all endpoints
               mockEndpoints();
           }
       });

       getMockEndpoint("mock:direct:start").expectedBodiesReceived("Hello World");
       getMockEndpoint("mock:direct:foo").expectedBodiesReceived("Hello World");
       getMockEndpoint("mock:log:foo").expectedBodiesReceived("Bye World");
       getMockEndpoint("mock:result").expectedBodiesReceived("Bye World");

       template.sendBody("direct:start", "Hello World");

       assertMockEndpointsSatisfied();

       // additional test to ensure correct endpoints in registry
       assertNotNull(context.hasEndpoint("direct:start"));
       assertNotNull(context.hasEndpoint("direct:foo"));
       assertNotNull(context.hasEndpoint("log:foo"));
       assertNotNull(context.hasEndpoint("mock:result"));
       // all the endpoints was mocked
       assertNotNull(context.hasEndpoint("mock:direct:start"));
       assertNotNull(context.hasEndpoint("mock:direct:foo"));
       assertNotNull(context.hasEndpoint("mock:log:foo"));
   }

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请注意，模拟端点被授予 URI mock:<endpoint&gt;，如 mock:direct:foo。在 INFO 级别获取正在模拟的端点的 Camel 日志：

INFO  Adviced endpoint [direct://foo] with mock endpoint [mock:direct:foo]

INFO  Adviced endpoint [direct://foo] with mock endpoint [mock:direct:foo]

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注意

模拟的端点是没有参数
端点，这些端点将将其参数剥离。例如，端点 log:foo?showAll=true 将被模拟到以下端点 mock:log:foo。注意参数已被删除。

也可以使用某一模式来模拟某些端点。例如，要模拟您执行的所有日志端点，如下所示：

建议 只使用模式模拟日志端点

public void testAdvisedMockEndpointsWithPattern() throws Exception {
    // advice the first route using the inlined AdviceWith route builder
    // which has extended capabilities than the regular route builder
    context.getRouteDefinitions().get(0).adviceWith(context, new AdviceWithRouteBuilder() {
        @Override
        public void configure() throws Exception {
            // mock only log endpoints
            mockEndpoints("log*");
        }
    });

    // now we can refer to log:foo as a mock and set our expectations
    getMockEndpoint("mock:log:foo").expectedBodiesReceived("Bye World");

    getMockEndpoint("mock:result").expectedBodiesReceived("Bye World");

    template.sendBody("direct:start", "Hello World");

    assertMockEndpointsSatisfied();

    // additional test to ensure correct endpoints in registry
    assertNotNull(context.hasEndpoint("direct:start"));
    assertNotNull(context.hasEndpoint("direct:foo"));
    assertNotNull(context.hasEndpoint("log:foo"));
    assertNotNull(context.hasEndpoint("mock:result"));
    // only the log:foo endpoint was mocked
    assertNotNull(context.hasEndpoint("mock:log:foo"));
    assertNull(context.hasEndpoint("mock:direct:start"));
    assertNull(context.hasEndpoint("mock:direct:foo"));
}

public void testAdvisedMockEndpointsWithPattern() throws Exception {
    // advice the first route using the inlined AdviceWith route builder
    // which has extended capabilities than the regular route builder
    context.getRouteDefinitions().get(0).adviceWith(context, new AdviceWithRouteBuilder() {
        @Override
        public void configure() throws Exception {
            // mock only log endpoints
            mockEndpoints("log*");
        }
    });

    // now we can refer to log:foo as a mock and set our expectations
    getMockEndpoint("mock:log:foo").expectedBodiesReceived("Bye World");

    getMockEndpoint("mock:result").expectedBodiesReceived("Bye World");

    template.sendBody("direct:start", "Hello World");

    assertMockEndpointsSatisfied();

    // additional test to ensure correct endpoints in registry
    assertNotNull(context.hasEndpoint("direct:start"));
    assertNotNull(context.hasEndpoint("direct:foo"));
    assertNotNull(context.hasEndpoint("log:foo"));
    assertNotNull(context.hasEndpoint("mock:result"));
    // only the log:foo endpoint was mocked
    assertNotNull(context.hasEndpoint("mock:log:foo"));
    assertNull(context.hasEndpoint("mock:direct:start"));
    assertNull(context.hasEndpoint("mock:direct:foo"));
}

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支持的模式可以是通配符或正则表达式。在 Intercept 它与 Camel 使用的匹配功能相同时，请参阅该详情。

注意

请记住，模拟端点会导致在消息到达模拟时复制消息。
这意味着 Camel 将使用更多内存。当您以大量消息发送时，这可能不适合。

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226.7. 模拟现有端点

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