.. _config_network_filters_dubbo_proxy: Dubbo proxy ============ The dubbo proxy filter decodes the RPC protocol between dubbo clients and servers. the decoded RPC information is converted to metadata. the metadata includes the basic request ID, request type, serialization type, and the required service name, method name, parameter name, and parameter value for routing. * :ref:`v2 API reference ` * This filter should be configured with the name *envoy.filters.network.dubbo_proxy*. .. _config_network_filters_dubbo_proxy_stats: Statistics ---------- Every configured dubbo proxy filter has statistics rooted at *redis..* with the following statistics: .. csv-table:: :header: Name, Type, Description :widths: 1, 1, 2 request, Counter, Total requests request_twoway, Counter, Total twoway requests request_oneway, Counter, Total oneway requests request_event, Counter, Total event requests request_decoding_error, Counter, Total decoding error requests request_decoding_success, Counter, Total decoding success requests request_active, Gauge, Total active requests response, Counter, Total responses response_success, Counter, Total success responses response_error, Counter, Total responses that protocol parse error response_error_caused_connection_close, Counter, Total responses that caused by the downstream connection close response_business_exception, Counter, Total responses that the protocol contains exception information returned by the business layer response_decoding_error, Counter, Total decoding error responses response_decoding_success, Counter, Total decoding success responses response_error, Counter, Total responses that protocol parse error local_response_success, Counter, Total local responses local_response_error, Counter, Total local responses that encoding error local_response_business_exception, Counter, Total local responses that the protocol contains business exception cx_destroy_local_with_active_rq, Counter, Connections destroyed locally with an active query cx_destroy_remote_with_active_rq, Counter, Connections destroyed remotely with an active query Implement custom filter based on the dubbo proxy filter -------------------------------------------------------- If you want to implement a custom filter based on the dubbo protocol, the dubbo proxy filter like HTTP also provides a very convenient way to expand, the first step is to implement the DecoderFilter interface, and give the filter named, such as testFilter, the second step is to add your configuration, configuration method refer to the following sample .. code-block:: yaml filter_chains: - filters: - name: envoy.filters.network.dubbo_proxy config: stat_prefix: dubbo_incomming_stats protocol_type: Dubbo serialization_type: Hessian2 route_config: name: local_route interface: org.apache.dubbo.demo.DemoService routes: - match: method: name: exact: sayHello route: cluster: user_service_dubbo_server dubbo_filters: - name: envoy.filters.dubbo.testFilter config: "@type": type.googleapis.com/google.protobuf.Struct value: name: test_service - name: envoy.filters.dubbo.router