| /* |
| * Copyright 2018, gRPC Authors All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package io.grpc.protobuf.services; |
| |
| import com.google.protobuf.MessageLite; |
| import java.io.BufferedOutputStream; |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * The output file goes to the JVM's temp dir with a prefix of BINARY_INFO. The proto messages |
| * are written serially using {@link MessageLite#writeDelimitedTo(OutputStream)}. |
| */ |
| class TempFileSink implements BinaryLogSink { |
| private static final Logger logger = Logger.getLogger(TempFileSink.class.getName()); |
| |
| private final String outPath; |
| private final OutputStream out; |
| private boolean closed; |
| |
| TempFileSink() throws IOException { |
| File outFile = File.createTempFile("BINARY_INFO.", ""); |
| outPath = outFile.getPath(); |
| logger.log(Level.INFO, "Writing binary logs to to {0}", outFile.getAbsolutePath()); |
| out = new BufferedOutputStream(new FileOutputStream(outFile)); |
| } |
| |
| String getPath() { |
| return this.outPath; |
| } |
| |
| @Override |
| public synchronized void write(MessageLite message) { |
| if (closed) { |
| logger.log(Level.FINEST, "Attempt to write after TempFileSink is closed."); |
| return; |
| } |
| try { |
| message.writeDelimitedTo(out); |
| } catch (IOException e) { |
| logger.log(Level.SEVERE, "Caught exception while writing", e); |
| closeQuietly(); |
| } |
| } |
| |
| @Override |
| public synchronized void close() throws IOException { |
| if (closed) { |
| return; |
| } |
| closed = true; |
| try { |
| out.flush(); |
| } finally { |
| out.close(); |
| } |
| } |
| |
| private synchronized void closeQuietly() { |
| try { |
| close(); |
| } catch (IOException e) { |
| logger.log(Level.SEVERE, "Caught exception while closing", e); |
| } |
| } |
| } |