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Interceptor is located and executed where the service is implemented (for Java service - on Java side, for .NET-service on .NET side). Its execution should not cause additional serialization).

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Invocation order

The user can specify multiple interceptors.Each interceptor invokes the next interceptor in the chain using a delegated call, the last interceptor will call the service method.

So the interceptor specified first in the configuration will process the result of the service method execution last.

Resource injection

Interceptor must support the injection of generic resources.

Interception scope

Interceptor only applies to user-defined service methods and does not apply to service lifecycle methods - init, execute andcancel,

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Exception thrown by the interceptor will be wrapped into unchecked IgniteException and passed to the initiator.

Risks and Assumptions

The interceptor gives the user full control over the invocation of the service methods, so in case of implementation errors, the user may get unexpected behavior of the service.

Discussion Links

https://lists.apache.org/thread.html/r4236c1f23e524dc969bc55057467a2bbe7f9a59a6db7c7fcdc1b7d37%40%3Cdev.ignite.apache.org%3E

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