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

Example 16 with FileNotFoundException

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

the class Java2GroovyProcessor method convert.

public static String convert(String filename, String input, boolean withHeader, boolean withNewLines) throws Exception {
    JavaRecognizer parser = getJavaParser(input);
    String[] tokenNames = parser.getTokenNames();
    parser.compilationUnit();
    AST ast = parser.getAST();
    // which is a really nice way of seeing the AST, folding nodes etc
    if ("mindmap".equals(System.getProperty("ANTLR.AST".toLowerCase()))) {
        // uppercase to hide from jarjar
        try {
            PrintStream out = new PrintStream(new FileOutputStream(filename + ".mm"));
            Visitor visitor = new MindMapPrinter(out, tokenNames);
            AntlrASTProcessor treewalker = new PreOrderTraversal(visitor);
            treewalker.process(ast);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot create " + filename + ".mm");
        }
    }
    // modify the Java AST into a Groovy AST
    modifyJavaASTintoGroovyAST(tokenNames, ast);
    String[] groovyTokenNames = getGroovyTokenNames(input);
    // groovify the fat Java-Like Groovy AST
    groovifyFatJavaLikeGroovyAST(ast, groovyTokenNames);
    // now output
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    Visitor visitor = new SourcePrinter(new PrintStream(baos), groovyTokenNames, withNewLines);
    AntlrASTProcessor traverser = new SourceCodeTraversal(visitor);
    traverser.process(ast);
    String header = "";
    if (withHeader) {
        header = "/*\n" + "  Automatically Converted from Java Source \n" + "  \n" + "  by java2groovy v0.0.1   Copyright Jeremy Rayner 2007\n" + "  \n" + "  !! NOT FIT FOR ANY PURPOSE !! \n" + "  'java2groovy' cannot be used to convert one working program into another" + "  */\n\n";
    }
    return header + new String(baos.toByteArray());
}

Example 17 with FileNotFoundException

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

the class UserGroupInformation method loginUserFromSubject.

/**
   * Log in a user using the given subject
   * @param subject the subject to use when logging in a user, or null to
   * create a new subject.
   *
   * If subject is not null, the creator of subject is responsible for renewing
   * credentials.
   *
   * @throws IOException if login fails
   */
@InterfaceAudience.Public
@InterfaceStability.Evolving
public static synchronized void loginUserFromSubject(Subject subject) throws IOException {
    ensureInitialized();
    boolean externalSubject = false;
    try {
        if (subject == null) {
            subject = new Subject();
        } else {
            if (LOG.isDebugEnabled()) {
                LOG.debug("Treat subject external: " + treatSubjectExternal + ". When true, assuming keytab is managed extenally since " + " logged in from subject");
            }
            externalSubject = treatSubjectExternal;
        }
        LoginContext login = newLoginContext(authenticationMethod.getLoginAppName(), subject, new HadoopConfiguration());
        login.login();
        UserGroupInformation realUser = new UserGroupInformation(subject, externalSubject);
        realUser.setLogin(login);
        realUser.setAuthenticationMethod(authenticationMethod);
        // If the HADOOP_PROXY_USER environment variable or property
        // is specified, create a proxy user as the logged in user.
        String proxyUser = System.getenv(HADOOP_PROXY_USER);
        if (proxyUser == null) {
            proxyUser = System.getProperty(HADOOP_PROXY_USER);
        }
        loginUser = proxyUser == null ? realUser : createProxyUser(proxyUser, realUser);
        String tokenFileLocation = System.getProperty(HADOOP_TOKEN_FILES);
        if (tokenFileLocation == null) {
            tokenFileLocation = conf.get(HADOOP_TOKEN_FILES);
        }
        if (tokenFileLocation != null) {
            for (String tokenFileName : StringUtils.getTrimmedStrings(tokenFileLocation)) {
                if (tokenFileName.length() > 0) {
                    File tokenFile = new File(tokenFileName);
                    if (tokenFile.exists() && tokenFile.isFile()) {
                        Credentials cred = Credentials.readTokenStorageFile(tokenFile, conf);
                        loginUser.addCredentials(cred);
                    } else {
                        LOG.info("tokenFile(" + tokenFileName + ") does not exist");
                    }
                }
            }
        }
        String fileLocation = System.getenv(HADOOP_TOKEN_FILE_LOCATION);
        if (fileLocation != null) {
            // Load the token storage file and put all of the tokens into the
            // user. Don't use the FileSystem API for reading since it has a lock
            // cycle (HADOOP-9212).
            File source = new File(fileLocation);
            LOG.debug("Reading credentials from location set in {}: {}", HADOOP_TOKEN_FILE_LOCATION, source.getCanonicalPath());
            if (!source.isFile()) {
                throw new FileNotFoundException("Source file " + source.getCanonicalPath() + " from " + HADOOP_TOKEN_FILE_LOCATION + " not found");
            }
            Credentials cred = Credentials.readTokenStorageFile(source, conf);
            LOG.debug("Loaded {} tokens", cred.numberOfTokens());
            loginUser.addCredentials(cred);
        }
        loginUser.spawnAutoRenewalThreadForUserCreds();
    } catch (LoginException le) {
        LOG.debug("failure to login", le);
        throw new KerberosAuthException(FAILURE_TO_LOGIN, le);
    }
    if (LOG.isDebugEnabled()) {
        LOG.debug("UGI loginUser:" + loginUser);
    }
}

Example 18 with FileNotFoundException

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

the class TestSymlinkLocalFS method testGetLinkStatusPartQualTarget.

@Test(timeout = 1000)
public /** 
   * Test getLinkTarget with a partially qualified target. 
   * NB: Hadoop does not support fully qualified URIs for the 
   * file scheme (eg file://host/tmp/test).
   */
void testGetLinkStatusPartQualTarget() throws IOException {
    Path fileAbs = new Path(testBaseDir1() + "/file");
    Path fileQual = new Path(testURI().toString(), fileAbs);
    Path dir = new Path(testBaseDir1());
    Path link = new Path(testBaseDir1() + "/linkToFile");
    Path dirNew = new Path(testBaseDir2());
    Path linkNew = new Path(testBaseDir2() + "/linkToFile");
    wrapper.delete(dirNew, true);
    createAndWriteFile(fileQual);
    wrapper.setWorkingDirectory(dir);
    // Link target is partially qualified, we get the same back.
    wrapper.createSymlink(fileQual, link, false);
    assertEquals(fileQual, wrapper.getFileLinkStatus(link).getSymlink());
    // Because the target was specified with an absolute path the
    // link fails to resolve after moving the parent directory. 
    wrapper.rename(dir, dirNew);
    // The target is still the old path
    assertEquals(fileQual, wrapper.getFileLinkStatus(linkNew).getSymlink());
    try {
        readFile(linkNew);
        fail("The link should be dangling now.");
    } catch (FileNotFoundException x) {
    // Expected.
    }
    // RawLocalFs only maintains the path part, not the URI, and
    // therefore does not support links to other file systems.
    Path anotherFs = new Path("hdfs://host:1000/dir/file");
    FileUtil.fullyDelete(new File(linkNew.toString()));
    try {
        wrapper.createSymlink(anotherFs, linkNew, false);
        fail("Created a local fs link to a non-local fs");
    } catch (IOException x) {
    // Excpected.
    }
}

Example 19 with FileNotFoundException

use of java.io.FileNotFoundException in project flink by apache.

the class WriteSinkFunction method cleanFile.

/**
	 * Creates target file if it does not exist, cleans it if it exists.
	 * 
	 * @param path
	 *            is the path to the location where the tuples are written
	 */
protected void cleanFile(String path) {
    try {
        PrintWriter writer;
        writer = new PrintWriter(path);
        writer.print("");
        writer.close();
    } catch (FileNotFoundException e) {
        throw new RuntimeException("An error occurred while cleaning the file: " + e.getMessage(), e);
    }
}

Example 20 with FileNotFoundException

use of java.io.FileNotFoundException in project flink by apache.

the class ContinuousFileMonitoringFunction method run.

@Override
public void run(SourceFunction.SourceContext<TimestampedFileInputSplit> context) throws Exception {
    Path p = new Path(path);
    FileSystem fileSystem = FileSystem.get(p.toUri());
    if (!fileSystem.exists(p)) {
        throw new FileNotFoundException("The provided file path " + path + " does not exist.");
    }
    checkpointLock = context.getCheckpointLock();
    switch(watchType) {
        case PROCESS_CONTINUOUSLY:
            while (isRunning) {
                synchronized (checkpointLock) {
                    monitorDirAndForwardSplits(fileSystem, context);
                }
                Thread.sleep(interval);
            }
            break;
        case PROCESS_ONCE:
            synchronized (checkpointLock) {
                if (globalModificationTime == Long.MIN_VALUE) {
                    monitorDirAndForwardSplits(fileSystem, context);
                    globalModificationTime = Long.MAX_VALUE;
                }
                isRunning = false;
            }
            break;
        default:
            isRunning = false;
            throw new RuntimeException("Unknown WatchType" + watchType);
    }
}