1) Configure "consumer.xml" file: "consumer.xml" already defines the
application name attribute like this:
<dubbo:application name="demo-provider"/>
2) RpcContext: There is an field "attachments" in the "RpcContext.java" to
support the developer to extend the field values in the form of a key-value.
3) in the ComsumerContextFilter, we use the invoke() method to call the
RpcContext.setAttachment() method as follows:
RpcContext.setAttachment(Constants.APPLICATION_KEY,invoker.getUrl().getParameter("application"))
4) The Provider can take the application name from the RpcContext:
RpcContext.getContext().getAttachment("application name")
[ Full content available at:
https://github.com/apache/incubator-dubbo/issues/1054 ]
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