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Camel now supports configuring two aspects:
- auto startup
- order of starting routes
Configuring whether Camel should be auto started or not in XML DSL
The old option shouldStartContext
have been removed and replaced with this new autoStartup
option instead. What it allows is to configure Camel to not auto start when Spring starts.
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ApplicationContext ac = ... SpringCamelContext camel = (SpringCamelContext) ac.getBean("myCamel"); // now start Camel manually camel.start(); |
Configuring whether a route should be started or not in XML DSL
You can use the autoStartup
option to configure if a given route should be started when Camel starts. By default a route is auto started.
You can disable or enable it as follows:
In XML DSL you define it as follows:
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<route autoStartup="false"> <from uri="activemq:queue:special"/> <to uri="file://backup"/> </route> |
And to explicit state it should be started
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<route autoStartup="true">
<from uri="activemq:queue:special"/>
<to uri="file://backup"/>
</route>
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Configuring whether a route should be started or not in Java DSL
You can use the autoStartup
option to configure if a given route should be started when Camel starts. By default a route is auto started.
You can disable or enable it as follows:
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from("activemq:queue:special").noAutoStartup().to("file://backup");
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Configuring whether a route should be started or not, using a boolean or String, in Java DSL
Available as of Camel 2.9
To startup based on a boolean, String or Property, do one of the following:
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boolean startupRoute = true; from("activemq:queue:special").autoStartup(startRoutestartupRoute).to("file://backup"); ... String startupRoute = "true"; from("activemq:queue:special").autoStartup(startRoutestartupRoute).to("file://backup"); ... from("activemq:queue:special").autoStartup("{{startupRouteProperty}}").to("file://backup"); |
In XML DSL you define it as follows:
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<route autoStartup="false">
<from uri="activemq:queue:special"/>
<to uri="file://backup"/>
</route>
And to explicit state it should be started
Code Block | ||
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xml | xml | <route autoStartup="true"> <from uri="activemq:queue:special"/> <to uri="file://backup"/> </route> |
Configuring starting order for routes
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It can help in cases where routes are inter dependent on each other and also help with graceful shutting down Camel as Camel can stop the routes in the correct order as well.
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Camel 2.2: Camel will stop the routes in the same order in which they was that they were started. |
Examples
Lets try a couple of examples
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So you can use this to your advantage to only assign a startupOrder
on the routes which really needs it.
Shutdown
Camel 2.2: Camel will shutdown the routes in the same order that they were started.
Camel 2.3: Camel will shutdown the routes in the reverse order that they were started.
as they was started. See also Graceful Shutdown.