1 /* 2 * Copyright 2018 The gRPC Authors 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 io.grpc.services; 18 19 import com.google.common.base.Preconditions; 20 import io.grpc.CallOptions; 21 import io.grpc.ClientInterceptor; 22 import io.grpc.ServerInterceptor; 23 import java.io.IOException; 24 import java.util.concurrent.atomic.AtomicLong; 25 import javax.annotation.Nullable; 26 27 /** 28 * The default implementation of a {@link BinaryLogProvider}. 29 */ 30 class BinaryLogProviderImpl extends BinaryLogProvider { 31 private final BinlogHelper.Factory factory; 32 private final BinaryLogSink sink; 33 private final AtomicLong counter = new AtomicLong(); 34 BinaryLogProviderImpl()35 public BinaryLogProviderImpl() throws IOException { 36 this(new TempFileSink(), System.getenv("GRPC_BINARY_LOG_CONFIG")); 37 } 38 BinaryLogProviderImpl(BinaryLogSink sink)39 public BinaryLogProviderImpl(BinaryLogSink sink) throws IOException { 40 this(sink, System.getenv("GRPC_BINARY_LOG_CONFIG")); 41 } 42 43 /** 44 * Creates an instance. 45 * @param sink ownership is transferred to this class. 46 * @param configStr config string to parse to determine logged methods and msg size limits. 47 * @throws IOException if initialization failed. 48 */ BinaryLogProviderImpl(BinaryLogSink sink, String configStr)49 BinaryLogProviderImpl(BinaryLogSink sink, String configStr) throws IOException { 50 this.sink = Preconditions.checkNotNull(sink); 51 try { 52 factory = new BinlogHelper.FactoryImpl(sink, configStr); 53 } catch (RuntimeException e) { 54 sink.close(); 55 // parsing the conf string may throw if it is blank or contains errors 56 throw new IOException( 57 "Can not initialize. The env variable GRPC_BINARY_LOG_CONFIG must be valid.", e); 58 } 59 } 60 61 @Nullable 62 @Override getServerInterceptor(String fullMethodName)63 public ServerInterceptor getServerInterceptor(String fullMethodName) { 64 BinlogHelper helperForMethod = factory.getLog(fullMethodName); 65 if (helperForMethod == null) { 66 return null; 67 } 68 return helperForMethod.getServerInterceptor(getServerCallId()); 69 } 70 71 @Nullable 72 @Override getClientInterceptor( String fullMethodName, CallOptions callOptions)73 public ClientInterceptor getClientInterceptor( 74 String fullMethodName, CallOptions callOptions) { 75 BinlogHelper helperForMethod = factory.getLog(fullMethodName); 76 if (helperForMethod == null) { 77 return null; 78 } 79 return helperForMethod.getClientInterceptor(getClientCallId(callOptions)); 80 } 81 82 @Override close()83 public void close() throws IOException { 84 sink.close(); 85 } 86 getServerCallId()87 protected CallId getServerCallId() { 88 return new CallId(0, counter.getAndIncrement()); 89 } 90 getClientCallId(CallOptions options)91 protected CallId getClientCallId(CallOptions options) { 92 return new CallId(0, counter.getAndIncrement()); 93 } 94 } 95