ms/blueprintsprocessor/modules/commons/grpc-lib/src/main/kotlin/org/onap/ccsdk/cds/blueprintsprocessor/grpc/interceptor/GrpcClientLoggingInterceptor.kt

   1 /*
   2  * Copyright © 2018-2019 AT&T Intellectual Property.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.onap.ccsdk.cds.blueprintsprocessor.grpc.interceptor
  18
  19 import io.grpc.*
  20 import org.onap.ccsdk.cds.blueprintsprocessor.grpc.service.GrpcLoggerService
  21 import org.onap.ccsdk.cds.controllerblueprints.core.logger
  22
  23
  24 class GrpcClientLoggingInterceptor : ClientInterceptor {
  25     val log = logger(GrpcClientLoggingInterceptor::class)
  26
  27     val loggingService = GrpcLoggerService()
  28
  29     override fun <ReqT, RespT> interceptCall(method: MethodDescriptor<ReqT, RespT>,
  30                                              callOptions: CallOptions, channel: Channel): ClientCall<ReqT, RespT> {
  31
  32         return object : ForwardingClientCall
  33         .SimpleForwardingClientCall<ReqT, RespT>(channel.newCall(method, callOptions)) {
  34
  35             override fun start(responseListener: Listener<RespT>, headers: Metadata) {
  36                 val listener = object : ForwardingClientCallListener.SimpleForwardingClientCallListener<RespT>(responseListener) {
  37                     override fun onMessage(message: RespT) {
  38                         loggingService.grpcInvoking(headers)
  39                         super.onMessage(message)
  40                     }
  41                 }
  42                 super.start(listener, headers)
  43             }
  44         }
  45
  46     }
  47 }