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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 com.android.jack.server;
import com.android.jack.Jack;
import com.android.jack.util.ExecuteFile;
import com.android.sched.util.config.cli.TokenIterator;
import com.android.sched.util.file.CannotReadException;
import com.android.sched.util.file.InputStreamFile;
import com.android.sched.util.file.NoSuchFileException;
import com.android.sched.util.file.NotFileOrDirectoryException;
import com.android.sched.util.file.WrongPermissionException;
import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.io.StreamTokenizer;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Nonnull;
/**
* {@link ServerTask} implementation that launches compilations with Jack into a spawned VM.
*/
public class ServerTaskSpawningVM implements ServerTask {
private static class MissingEnvException extends Exception {
private static final long serialVersionUID = 1L;
@Nonnull
private final String missingVariable;
public MissingEnvException(@Nonnull String missingVariable) {
this.missingVariable = missingVariable;
}
@Nonnull
@Override
public String getMessage() {
return "Environment variable '" + missingVariable + "' is undefined";
}
}
@Nonnull
private static Logger logger = Logger.getLogger(ServerTaskSpawningVM.class.getSimpleName());
@Override
public int run(@Nonnull PrintStream out, @Nonnull PrintStream err, @Nonnull File pwd,
@Nonnull TokenIterator args) {
List<String> commandLineArgs;
try {
commandLineArgs = buildArgs(args);
} catch (NoSuchFileException e) {
return ServerExitStatus.FAILURE_JACK_JAR_NOT_FOUND;
} catch (Exception e) {
logger.log(Level.SEVERE, "Failed to build command line", e);
return ServerExitStatus.FAILURE_USAGE;
}
ExecuteFile exec = new ExecuteFile(commandLineArgs.toArray(new String[commandLineArgs.size()]));
exec.setErr(err);
exec.setOut(out);
try {
exec.setWorkingDir(pwd, /* create */false);
} catch (IOException e) {
// It means that pwd is not a directory
return ServerExitStatus.FAILURE_USAGE;
}
try {
return exec.run();
} catch (Exception e) {
logger.log(Level.SEVERE, "Failed to run command " + commandLineArgs, e);
return ServerExitStatus.FAILURE_UNKNOWN;
}
}
@Nonnull
private List<String> buildArgs(@Nonnull TokenIterator args)
throws NoSuchElementException,
WrongPermissionException,
NoSuchFileException,
NotFileOrDirectoryException,
CannotReadException, MissingEnvException {
List<String> commandLineArgs = new ArrayList<String>();
String vmCommand = System.getenv("JACK_VM_COMMAND");
if (vmCommand == null) {
throw new MissingEnvException("JACK_VM_COMMAND");
}
String jackJarPath = System.getenv("JACK_JAR");
if (jackJarPath == null) {
throw new MissingEnvException("JACK_JAR");
}
new InputStreamFile(jackJarPath);
StreamTokenizer iter = getCommandLineTokenizer(vmCommand);
try {
while (iter.nextToken() != StreamTokenizer.TT_EOF) {
commandLineArgs.add(iter.sval);
}
} catch (IOException e) {
throw new AssertionError();
}
commandLineArgs.add("-jar");
commandLineArgs.add(jackJarPath);
while (args.hasNext()) {
commandLineArgs.add(args.next());
}
return commandLineArgs;
}
@Nonnull
private static StreamTokenizer getCommandLineTokenizer(@Nonnull String command) {
StreamTokenizer tokenizer = new StreamTokenizer(new StringReader(command));
tokenizer.resetSyntax();
tokenizer.wordChars(0, 255);
tokenizer.whitespaceChars(' ', ' ');
tokenizer.whitespaceChars('\t', '\t');
tokenizer.whitespaceChars('\n', '\n');
tokenizer.whitespaceChars('\r', '\r');
tokenizer.quoteChar('\'');
tokenizer.quoteChar('\"');
tokenizer.eolIsSignificant(false);
tokenizer.slashSlashComments(false);
tokenizer.slashStarComments(false);
tokenizer.lowerCaseMode(false);
return tokenizer;
}
@Override
@Nonnull
public String getVersion() {
return Jack.getVersion().getReleaseCode() + "-" + Jack.getVersion().getSubReleaseCode();
}
}
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