227.7. 模拟现有端点
从 Camel 2.7 开始提供
Camel 现在允许您在 Camel 路由中自动模拟现有端点。
注意
它的运作方式 仍然在操作中。不同的情况是注入 Mock 端点并首先接收消息，然后将消息委派给目标端点。您可以将它视为拦截器和委派或端点监听程序。
假设您有以下给定路由：
Route
@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"));
}
};
}
然后，您可以使用 Camel 中的 recommendations With 功能模拟单元测试中给定路由中的所有端点，如下所示：
建议 模拟所有端点
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"));
}
请注意，模拟端点被授予 URI mock:<endpoint>，如 mock:direct:foo。在 INFO 级别 Camel 日志被模拟：
INFO Adviced endpoint [direct://foo] with mock endpoint [mock:direct:foo]
注意
模拟端点没有参数
端点，这些端点将被剥离其参数。例如，端点 log:foo?showAll=true 将模拟到以下端点 mock:log:foo。请注意，参数已被删除。
它还可以使用模式来模拟特定的端点。例如，要模拟您执行 的所有日志 端点，如下所示：
建议 仅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"));
}
支持的模式可以是通配符或正则表达式。请参阅 Intercept 与 Camel 使用的相同匹配函数的更多详细信息。
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。当您发送大量消息时，这可能不适用。
