Examples with PrintStream java.io.PrintStream used on opensource projects

Example 16 with PrintStream

use of java.io.PrintStream in project hadoop by apache.

the class RollingFileSystemSink method createOrAppendLogFile.

/**
   * Create a new log file and return the {@link FSDataOutputStream}. If a
   * file with the specified path already exists, open the file for append
   * instead.
   *
   * Once the file is open, update {@link #currentFSOutStream},
   * {@link #currentOutStream}, and {@#link #currentFilePath}.
   *
   * @param initial the target path
   * @throws IOException thrown if the call to see the append operation fails.
   */
private void createOrAppendLogFile(Path targetFile) throws IOException {
    // test-and-set.
    try {
        currentFSOutStream = fileSystem.create(targetFile, false);
        currentOutStream = new PrintStream(currentFSOutStream, true, StandardCharsets.UTF_8.name());
    } catch (IOException ex) {
        // actually exist yet or the operation actually failed.
        try {
            currentFSOutStream = fileSystem.append(targetFile);
            currentOutStream = new PrintStream(currentFSOutStream, true, StandardCharsets.UTF_8.name());
        } catch (IOException ex2) {
            // If the original create failed for a legit but transitory
            // reason, the append will fail because the file now doesn't exist,
            // resulting in a confusing stack trace.  To avoid that, we set
            // the cause of the second exception to be the first exception.
            // It's still a tiny bit confusing, but it's enough
            // information that someone should be able to figure it out.
            ex2.initCause(ex);
            throw ex2;
        }
    }
    currentFilePath = targetFile;
}

Example 17 with PrintStream

use of java.io.PrintStream in project hadoop by apache.

the class RollingFileSystemSink method scheduleFlush.

/**
   * Schedule the current interval's directory to be flushed. If this ends up
   * running after the top of the next interval, it will execute immediately.
   *
   * @param when the time the thread should run
   */
private void scheduleFlush(Date when) {
    // Store the current currentDirPath to close later
    final PrintStream toClose = currentOutStream;
    flushTimer.schedule(new TimerTask() {

        @Override
        public void run() {
            synchronized (lock) {
                // This close may have already been done by a putMetrics() call. If it
                // has, the PrintStream will swallow the exception, which is fine.
                toClose.close();
            }
            hasFlushed = true;
        }
    }, when);
}

Example 18 with PrintStream

use of java.io.PrintStream in project groovy by apache.

the class AntlrParserPlugin method outputASTInVariousFormsIfNeeded.

private void outputASTInVariousFormsIfNeeded(SourceUnit sourceUnit, SourceBuffer sourceBuffer) {
    // straight xstream output of AST
    // uppercase to hide from jarjar
    String formatProp = System.getProperty("ANTLR.AST".toLowerCase());
    if ("xml".equals(formatProp)) {
        saveAsXML(sourceUnit.getName(), ast);
    }
    // 'pretty printer' output of AST
    if ("groovy".equals(formatProp)) {
        try {
            PrintStream out = new PrintStream(new FileOutputStream(sourceUnit.getName() + ".pretty.groovy"));
            Visitor visitor = new SourcePrinter(out, tokenNames);
            AntlrASTProcessor treewalker = new SourceCodeTraversal(visitor);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + sourceUnit.getName() + ".pretty.groovy");
        }
    }
    // which is a really nice way of seeing the AST, folding nodes etc
    if ("mindmap".equals(formatProp)) {
        try {
            PrintStream out = new PrintStream(new FileOutputStream(sourceUnit.getName() + ".mm"));
            Visitor visitor = new MindMapPrinter(out, tokenNames);
            AntlrASTProcessor treewalker = new PreOrderTraversal(visitor);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + sourceUnit.getName() + ".mm");
        }
    }
    // include original line/col info and source code on the mindmap output
    if ("extendedMindmap".equals(formatProp)) {
        try {
            PrintStream out = new PrintStream(new FileOutputStream(sourceUnit.getName() + ".mm"));
            Visitor visitor = new MindMapPrinter(out, tokenNames, sourceBuffer);
            AntlrASTProcessor treewalker = new PreOrderTraversal(visitor);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + sourceUnit.getName() + ".mm");
        }
    }
    // html output of AST
    if ("html".equals(formatProp)) {
        try {
            PrintStream out = new PrintStream(new FileOutputStream(sourceUnit.getName() + ".html"));
            List<VisitorAdapter> v = new ArrayList<VisitorAdapter>();
            v.add(new NodeAsHTMLPrinter(out, tokenNames));
            v.add(new SourcePrinter(out, tokenNames));
            Visitor visitors = new CompositeVisitor(v);
            AntlrASTProcessor treewalker = new SourceCodeTraversal(visitors);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + sourceUnit.getName() + ".html");
        }
    }
}

Example 19 with PrintStream

use of java.io.PrintStream in project hadoop by apache.

the class StructureGenerator method output.

/** Output directory structure to a file, each line of the file
   * contains the directory name. Only empty directory names are printed. */
private void output(File outFile) throws FileNotFoundException {
    System.out.println("Printing to " + outFile.toString());
    PrintStream out = new PrintStream(outFile);
    root.output(out, null);
    out.close();
}

Example 20 with PrintStream

use of java.io.PrintStream in project hadoop by apache.

the class TestFind method processArgumentsMaxDepth.

// check maximum depth is handled
@Test
public void processArgumentsMaxDepth() throws IOException {
    LinkedList<PathData> items = createDirectories();
    Find find = new Find();
    find.getOptions().setMaxDepth(1);
    find.setConf(conf);
    PrintStream out = mock(PrintStream.class);
    find.getOptions().setOut(out);
    PrintStream err = mock(PrintStream.class);
    find.getOptions().setErr(err);
    Expression expr = mock(Expression.class);
    when(expr.apply((PathData) any(), anyInt())).thenReturn(Result.PASS);
    FileStatusChecker fsCheck = mock(FileStatusChecker.class);
    Expression test = new TestExpression(expr, fsCheck);
    find.setRootExpression(test);
    find.processArguments(items);
    InOrder inOrder = inOrder(expr);
    inOrder.verify(expr).setOptions(find.getOptions());
    inOrder.verify(expr).prepare();
    inOrder.verify(expr).apply(item1, 0);
    inOrder.verify(expr).apply(item1a, 1);
    inOrder.verify(expr).apply(item1b, 1);
    inOrder.verify(expr).apply(item2, 0);
    inOrder.verify(expr).apply(item3, 0);
    inOrder.verify(expr).apply(item4, 0);
    inOrder.verify(expr).apply(item5, 0);
    inOrder.verify(expr).apply(item5a, 1);
    inOrder.verify(expr).apply(item5b, 1);
    inOrder.verify(expr).apply(item5c, 1);
    inOrder.verify(expr).apply(item5d, 1);
    inOrder.verify(expr).apply(item5e, 1);
    inOrder.verify(expr).finish();
    verifyNoMoreInteractions(expr);
    InOrder inOrderFsCheck = inOrder(fsCheck);
    inOrderFsCheck.verify(fsCheck).check(item1.stat);
    inOrderFsCheck.verify(fsCheck).check(item1a.stat);
    inOrderFsCheck.verify(fsCheck).check(item1b.stat);
    inOrderFsCheck.verify(fsCheck).check(item2.stat);
    inOrderFsCheck.verify(fsCheck).check(item3.stat);
    inOrderFsCheck.verify(fsCheck).check(item4.stat);
    inOrderFsCheck.verify(fsCheck).check(item5.stat);
    inOrderFsCheck.verify(fsCheck).check(item5a.stat);
    inOrderFsCheck.verify(fsCheck).check(item5b.stat);
    inOrderFsCheck.verify(fsCheck).check(item5c.stat);
    inOrderFsCheck.verify(fsCheck).check(item5d.stat);
    inOrderFsCheck.verify(fsCheck).check(item5e.stat);
    verifyNoMoreInteractions(fsCheck);
    verifyNoMoreInteractions(out);
    verifyNoMoreInteractions(err);
}