Upgrade CDS GRPC implementations.
[ccsdk/cds.git] / 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.CallOptions
20 import io.grpc.Channel
21 import io.grpc.ClientCall
22 import io.grpc.ClientInterceptor
23 import io.grpc.ForwardingClientCall
24 import io.grpc.ForwardingClientCallListener
25 import io.grpc.Metadata
26 import io.grpc.MethodDescriptor
27 import org.onap.ccsdk.cds.blueprintsprocessor.grpc.service.GrpcLoggerService
28 import org.onap.ccsdk.cds.controllerblueprints.core.logger
29
30 class GrpcClientLoggingInterceptor : ClientInterceptor {
31     val log = logger(GrpcClientLoggingInterceptor::class)
32
33     val loggingService = GrpcLoggerService()
34
35     override fun <ReqT, RespT> interceptCall(
36         method: MethodDescriptor<ReqT, RespT>,
37         callOptions: CallOptions,
38         channel: Channel
39     ): ClientCall<ReqT, RespT> {
40
41         return object : ForwardingClientCall
42         .SimpleForwardingClientCall<ReqT, RespT>(channel.newCall(method, callOptions)) {
43
44             override fun start(responseListener: Listener<RespT>, headers: Metadata) {
45                 val listener =
46                     object : ForwardingClientCallListener.SimpleForwardingClientCallListener<RespT>(responseListener) {
47                         override fun onMessage(message: RespT) {
48                             loggingService.grpcInvoking(headers)
49                             super.onMessage(message)
50                         }
51                     }
52                 super.start(listener, headers)
53             }
54         }
55     }
56 }