| package org.apache.maven.surefire.booter.spi; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| import org.apache.maven.surefire.api.booter.Command; |
| import org.apache.maven.surefire.api.booter.DumpErrorSingleton; |
| import org.apache.maven.surefire.api.booter.MasterProcessCommand; |
| import org.apache.maven.surefire.api.booter.MasterProcessChannelDecoder; |
| import org.apache.maven.surefire.api.util.internal.ImmutableMap; |
| |
| import javax.annotation.Nonnull; |
| import java.io.EOFException; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.ReadableByteChannel; |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import static org.apache.maven.surefire.api.booter.MasterProcessCommand.BYE_ACK; |
| import static org.apache.maven.surefire.api.booter.MasterProcessCommand.MAGIC_NUMBER; |
| import static org.apache.maven.surefire.api.booter.MasterProcessCommand.NOOP; |
| import static org.apache.maven.surefire.api.booter.MasterProcessCommand.RUN_CLASS; |
| import static org.apache.maven.surefire.api.booter.MasterProcessCommand.SHUTDOWN; |
| import static org.apache.maven.surefire.api.booter.MasterProcessCommand.SKIP_SINCE_NEXT_TEST; |
| import static org.apache.maven.surefire.api.booter.MasterProcessCommand.TEST_SET_FINISHED; |
| |
| /** |
| * magic number : opcode [: opcode specific data]* |
| * <br> |
| * |
| * @author <a href="mailto:tibordigana@apache.org">Tibor Digana (tibor17)</a> |
| * @since 3.0.0-M5 |
| */ |
| public class LegacyMasterProcessChannelDecoder implements MasterProcessChannelDecoder |
| { |
| private static final Map<String, MasterProcessCommand> COMMAND_OPCODES = stringsToOpcodes(); |
| |
| private final ReadableByteChannel channel; |
| |
| public LegacyMasterProcessChannelDecoder( @Nonnull ReadableByteChannel channel ) |
| { |
| this.channel = channel; |
| } |
| |
| @Override |
| @Nonnull |
| @SuppressWarnings( "checkstyle:innerassignment" ) |
| public Command decode() throws IOException |
| { |
| List<String> tokens = new ArrayList<>( 3 ); |
| StringBuilder token = new StringBuilder( MAGIC_NUMBER.length() ); |
| ByteBuffer buffer = ByteBuffer.allocate( 1 ); |
| |
| start: |
| do |
| { |
| boolean endOfStream; |
| tokens.clear(); |
| token.setLength( 0 ); |
| FrameCompletion completion = null; |
| for ( boolean frameStarted = false; !( endOfStream = channel.read( buffer ) == -1 ) ; completion = null ) |
| { |
| buffer.flip(); |
| char c = (char) buffer.get(); |
| buffer.clear(); |
| |
| if ( !frameStarted ) |
| { |
| if ( c == ':' ) |
| { |
| frameStarted = true; |
| token.setLength( 0 ); |
| tokens.clear(); |
| } |
| } |
| else |
| { |
| if ( c == ':' ) |
| { |
| tokens.add( token.toString() ); |
| token.setLength( 0 ); |
| completion = frameCompleteness( tokens ); |
| if ( completion == FrameCompletion.COMPLETE ) |
| { |
| break; |
| } |
| else if ( completion == FrameCompletion.MALFORMED ) |
| { |
| DumpErrorSingleton.getSingleton() |
| .dumpStreamText( "Malformed frame with tokens " + tokens ); |
| continue start; |
| } |
| } |
| else |
| { |
| token.append( c ); |
| } |
| } |
| } |
| |
| if ( completion == FrameCompletion.COMPLETE ) |
| { |
| MasterProcessCommand cmd = COMMAND_OPCODES.get( tokens.get( 1 ) ); |
| if ( tokens.size() == 2 ) |
| { |
| return new Command( cmd ); |
| } |
| else if ( tokens.size() == 3 ) |
| { |
| return new Command( cmd, tokens.get( 2 ) ); |
| } |
| } |
| |
| if ( endOfStream ) |
| { |
| throw new EOFException(); |
| } |
| } |
| while ( true ); |
| } |
| |
| private static FrameCompletion frameCompleteness( List<String> tokens ) |
| { |
| if ( !tokens.isEmpty() && !MAGIC_NUMBER.equals( tokens.get( 0 ) ) ) |
| { |
| return FrameCompletion.MALFORMED; |
| } |
| |
| if ( tokens.size() >= 2 ) |
| { |
| String opcode = tokens.get( 1 ); |
| MasterProcessCommand cmd = COMMAND_OPCODES.get( opcode ); |
| if ( cmd == null ) |
| { |
| return FrameCompletion.MALFORMED; |
| } |
| else if ( cmd.hasDataType() == ( tokens.size() == 3 ) ) |
| { |
| return FrameCompletion.COMPLETE; |
| } |
| } |
| return FrameCompletion.NOT_COMPLETE; |
| } |
| |
| @Override |
| public void close() |
| { |
| } |
| |
| /** |
| * Determines whether the frame is complete or malformed. |
| */ |
| private enum FrameCompletion |
| { |
| NOT_COMPLETE, |
| COMPLETE, |
| MALFORMED |
| } |
| |
| private static Map<String, MasterProcessCommand> stringsToOpcodes() |
| { |
| Map<String, MasterProcessCommand> opcodes = new HashMap<>(); |
| opcodes.put( "run-testclass", RUN_CLASS ); |
| opcodes.put( "testset-finished", TEST_SET_FINISHED ); |
| opcodes.put( "skip-since-next-test", SKIP_SINCE_NEXT_TEST ); |
| opcodes.put( "shutdown", SHUTDOWN ); |
| opcodes.put( "noop", NOOP ); |
| opcodes.put( "bye-ack", BYE_ACK ); |
| return new ImmutableMap<>( opcodes ); |
| } |
| } |