1 files changed, 152 insertions, 0 deletions
diff --git a/jack-server/src/com/android/jack/server/ServerTaskSpawningVM.java b/jack-server/src/com/android/jack/server/ServerTaskSpawningVM.java
new file mode 100644
index 00000000..a8ef6aba
--- /dev/null
+++ b/jack-server/src/com/android/jack/server/ServerTaskSpawningVM.java
@@ -0,0 +1,152 @@
+/*
+ * 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.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;
+  }
+}