Example usage for java.io IOException getCause

Introduction

In this page you can find the example usage for java.io IOException getCause.

Prototype

public synchronized Throwable getCause() 

Source Link

Document

Returns the cause of this throwable or null if the cause is nonexistent or unknown.

Usage

From source file:org.alfresco.utilities.LdtpUtils.java

/**
 * Execute a command/*  ww w .  j  ava2  s . co  m*/
 * 
 * @example: execute(new String[] { "killall", getApplicationName() }) for MAC
 * @param command
 */
public static void execute(String[] command) {
    try {
        Runtime.getRuntime().exec(command);
    } catch (IOException e) {
        logger.error("Could not execute command", e.getCause());
    }
}

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From source file:org.alfresco.utilities.LdtpUtils.java

/**
 * This will a specific process based on command array list passed
 * It's best to use this alternative rather than Runtime.getRuntime().exec
 * /*from  w ww .j ava  2  s.  c o  m*/
 * @author Paul Brodner
 * @param command
 * @return
 * @throws IOException
 * @throws InterruptedException
 */
public static Process runProcess(String... command) {
    ProcessBuilder pb = new ProcessBuilder(command);
    Process process;
    try {
        process = pb.start();
        LdtpUtils.logDebug("Running Process:" + command.toString());
        return process;
    } catch (IOException e) {
        logger.error("Could not run process", e.getCause());
    }
    return null;
}

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From source file:com.alibaba.wasp.ipc.WaspRPC.java

/**
 * @param protocol/* ww w.  j  ava 2s  .  com*/
 *          protocol interface
 * @param clientVersion
 *          which client version we expect
 * @param addr
 *          address of remote service
 * @param conf
 *          configuration
 * @param maxAttempts
 *          max attempts
 * @param rpcTimeout
 *          timeout for each RPC
 * @param timeout
 *          timeout in milliseconds
 * @return proxy
 * @throws java.io.IOException
 *           e
 */
@SuppressWarnings("unchecked")
public static VersionedProtocol waitForProxy(Class protocol, long clientVersion, InetSocketAddress addr,
        Configuration conf, int maxAttempts, int rpcTimeout, long timeout) throws IOException {
    long startTime = System.currentTimeMillis();
    IOException ioe;
    int reconnectAttempts = 0;
    while (true) {
        try {
            return getProxy(protocol, clientVersion, addr, conf, rpcTimeout);
        } catch (SocketTimeoutException te) { // namenode is busy
            LOG.info("Problem connecting to server: " + addr);
            ioe = te;
        } catch (IOException ioex) {
            // We only handle the ConnectException.
            ConnectException ce = null;
            if (ioex instanceof ConnectException) {
                ce = (ConnectException) ioex;
                ioe = ce;
            } else if (ioex.getCause() != null && ioex.getCause() instanceof ConnectException) {
                ce = (ConnectException) ioex.getCause();
                ioe = ce;
            } else if (ioex.getMessage().toLowerCase().contains("connection refused")) {
                ce = new ConnectException(ioex.getMessage());
                ioe = ce;
            } else {
                // This is the exception we can't handle.
                ioe = ioex;
            }
            if (ce != null) {
                handleConnectionException(++reconnectAttempts, maxAttempts, protocol, addr, ce);
            }
        }
        // check if timed out
        if (System.currentTimeMillis() - timeout >= startTime) {
            throw ioe;
        }

        // wait for retry
        try {
            Thread.sleep(1000);
        } catch (InterruptedException ie) {
            // IGNORE
        }
    }
}

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From source file:org.dspace.license.CreativeCommons.java

public static String fetchLicenseRdf(String ccResult) {
    StringWriter result = new StringWriter();
    String licenseRdfString = new String("");
    try {//from  w  w w . ja  v a2 s . com
        InputStream inputstream = new ByteArrayInputStream(ccResult.getBytes("UTF-8"));
        templates.newTransformer().transform(new StreamSource(inputstream), new StreamResult(result));
    } catch (TransformerException te) {
        throw new RuntimeException("Transformer exception " + te.getMessage(), te);
    } catch (IOException ioe) {
        throw new RuntimeException("IOexception " + ioe.getCause().toString(), ioe);
    } finally {
        return result.getBuffer().toString();
    }
}

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From source file:org.apache.hadoop.hbase.ipc.HBaseClientRPC.java

/**
 * @param protocol      protocol interface
 * @param addr          address of remote service
 * @param conf          configuration//from   w  w  w.java2  s  .c  o  m
 * @param maxAttempts   max attempts
 * @param rpcTimeout    timeout for each RPC
 * @param timeout       timeout in milliseconds
 * @return proxy
 * @throws java.io.IOException e
 */
public static IpcProtocol waitForProxy(Class<? extends IpcProtocol> protocol, InetSocketAddress addr,
        Configuration conf, int maxAttempts, int rpcTimeout, long timeout) throws IOException {
    // HBase does limited number of reconnects which is different from hadoop.
    long startTime = System.currentTimeMillis();
    IOException ioe;
    int reconnectAttempts = 0;
    while (true) {
        try {
            return getProxy(protocol, addr, conf, rpcTimeout);
        } catch (SocketTimeoutException te) {
            LOG.info("Problem connecting to server: " + addr);
            ioe = te;
        } catch (IOException ioex) {
            // We only handle the ConnectException.
            ConnectException ce = null;
            if (ioex instanceof ConnectException) {
                ce = (ConnectException) ioex;
                ioe = ce;
            } else if (ioex.getCause() != null && ioex.getCause() instanceof ConnectException) {
                ce = (ConnectException) ioex.getCause();
                ioe = ce;
            } else if (ioex.getMessage().toLowerCase().contains("connection refused")) {
                ce = new ConnectException(ioex.getMessage());
                ioe = ce;
            } else {
                // This is the exception we can't handle.
                ioe = ioex;
            }
            if (ce != null) {
                handleConnectionException(++reconnectAttempts, maxAttempts, protocol, addr, ce);
            }
        }
        // check if timed out
        if (System.currentTimeMillis() - timeout >= startTime) {
            throw ioe;
        }

        // wait for retry
        try {
            Thread.sleep(1000);
        } catch (InterruptedException ie) {
            // IGNORE
        }
    }
}

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From source file:org.wildfly.test.integration.elytron.sasl.mgmt.ExternalMgmtSaslTestCase.java

protected static void assertCertAuthenticationFails(String message) {
    final long startTime = System.currentTimeMillis();
    try {/*from  w  ww.ja va 2s .  c  o m*/
        executeWhoAmI();
        fail(message);
    } catch (IOException e) {
        assertTrue("Connection reached its timeout (hang).",
                startTime + CONNECTION_TIMEOUT_IN_MS > System.currentTimeMillis());
        Throwable cause = e.getCause();
        assertThat("ConnectionException was expected as a cause when certificate authentication fails", cause,
                is(instanceOf(ConnectException.class)));
        assertThat("SSLException was expected as the second cause when certificate authentication fails",
                cause.getCause(), anyOf(is(instanceOf(SSLException.class)), is(instanceOf(IOException.class)))); // JDK-8172163: IOException: Broken pipe needs to be accepted too
    }
}

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From source file:org.apache.hadoop.hdfs.protocol.datatransfer.DataTransferEncryptor.java

/**
 * Factory method for DNs, where the nonce, keyId, and encryption key are not
 * yet known. The nonce and keyId will be sent by the client, and the DN
 * will then use those pieces of info and the secret key shared with the NN
 * to determine the encryptionKey used for the SASL handshake/encryption.
 * /*from   w ww. j a v  a  2 s  . co  m*/
 * Establishes a secure connection assuming that the party on the other end
 * has the same shared secret. This does a SASL connection handshake, but not
 * a general-purpose one. It's specific to the MD5-DIGEST SASL mechanism with
 * auth-conf enabled. In particular, it doesn't support an arbitrary number of
 * challenge/response rounds, and we know that the client will never have an
 * initial response, so we don't check for one.
 *
 * @param underlyingOut output stream to write to the other party
 * @param underlyingIn input stream to read from the other party
 * @param blockPoolTokenSecretManager secret manager capable of constructing
 *        encryption key based on keyId, blockPoolId, and nonce
 * @return a pair of streams which wrap the given streams and encrypt/decrypt
 *         all data read/written
 * @throws IOException in the event of error
 */
public static IOStreamPair getEncryptedStreams(OutputStream underlyingOut, InputStream underlyingIn,
        BlockPoolTokenSecretManager blockPoolTokenSecretManager, String encryptionAlgorithm)
        throws IOException {

    DataInputStream in = new DataInputStream(underlyingIn);
    DataOutputStream out = new DataOutputStream(underlyingOut);

    Map<String, String> saslProps = Maps.newHashMap(SASL_PROPS);
    saslProps.put("com.sun.security.sasl.digest.cipher", encryptionAlgorithm);

    if (LOG.isDebugEnabled()) {
        LOG.debug("Server using encryption algorithm " + encryptionAlgorithm);
    }

    SaslParticipant sasl = new SaslParticipant(Sasl.createSaslServer(MECHANISM, PROTOCOL, SERVER_NAME,
            saslProps, new SaslServerCallbackHandler(blockPoolTokenSecretManager)));

    int magicNumber = in.readInt();
    if (magicNumber != ENCRYPTED_TRANSFER_MAGIC_NUMBER) {
        throw new InvalidMagicNumberException(magicNumber);
    }
    try {
        // step 1
        performSaslStep1(out, in, sasl);

        // step 2 (server-side only)
        byte[] remoteResponse = readSaslMessage(in);
        byte[] localResponse = sasl.evaluateChallengeOrResponse(remoteResponse);
        sendSaslMessage(out, localResponse);

        // SASL handshake is complete
        checkSaslComplete(sasl);

        return sasl.createEncryptedStreamPair(out, in);
    } catch (IOException ioe) {
        if (ioe instanceof SaslException && ioe.getCause() != null
                && ioe.getCause() instanceof InvalidEncryptionKeyException) {
            // This could just be because the client is long-lived and hasn't gotten
            // a new encryption key from the NN in a while. Upon receiving this
            // error, the client will get a new encryption key from the NN and retry
            // connecting to this DN.
            sendInvalidKeySaslErrorMessage(out, ioe.getCause().getMessage());
        } else {
            sendGenericSaslErrorMessage(out, ioe.getMessage());
        }
        throw ioe;
    }
}

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From source file:dk.netarkivet.common.utils.JMXUtils.java

/** Get a JMXConnector to a given host and port, using login and password.
 *
 * @param hostName The host to attempt to connect to.
 * @param jmxPort The port on the host to connect to
 * (a non-negative number).//from   ww  w.j a  v a2 s  .  c  o m
 * @param login The login name to authenticate as (typically "controlRole"
 * or "monitorRole".
 * @param password The password for JMX access.
 * @return A JMX connector to the given host and port, using default RMI.
 * @throws IOFailure if connecting to JMX fails.
 */
public static JMXConnector getJMXConnector(String hostName, int jmxPort, final String login,
        final String password) {
    ArgumentNotValid.checkNotNullOrEmpty(hostName, "String hostName");
    ArgumentNotValid.checkNotNegative(jmxPort, "int jmxPort");
    ArgumentNotValid.checkNotNullOrEmpty(login, "String login");
    ArgumentNotValid.checkNotNullOrEmpty(password, "String password");

    JMXServiceURL rmiurl = getUrl(hostName, jmxPort, -1);
    Map<String, ?> environment = packageCredentials(login, password);
    Throwable lastException;
    int retries = 0;
    final int maxJmxRetries = getMaxTries();
    do {
        try {
            return JMXConnectorFactory.connect(rmiurl, environment);
        } catch (IOException e) {
            lastException = e;
            if (retries < maxJmxRetries && e.getCause() != null
                    && (e.getCause() instanceof ServiceUnavailableException
                            || e.getCause() instanceof SocketTimeoutException)) {
                // Sleep a bit before trying again
                TimeUtils.exponentialBackoffSleep(retries);
                /*  called exponentialBackoffSleep(retries) which used
                Calendar.MILLISECOND as time unit, which means we only
                wait an exponential number of milliseconds.
                */
                continue;
            }
            break;
        }
    } while (retries++ < maxJmxRetries);
    throw new IOFailure(
            "Failed to connect to URL " + rmiurl + " after " + retries + " of " + maxJmxRetries
                    + " attempts.\nException type: " + lastException.getCause().getClass().getName(),
            lastException);
}

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From source file:com.liveneo.plat.utils.StringUtil.java

/**
 * Decodes a string which was encoded using Base64 encoding.
 * /*  w  ww.  j  a  v  a 2s.  co m*/
 * @param str
 *            The string to decode
 * @return Decoded string
 */
public static String decodeString(String str) {
    BASE64Decoder dec = new BASE64Decoder();
    try {
        return new String(dec.decodeBuffer(str));
    } catch (IOException io) {
        throw new RuntimeException(io.getMessage(), io.getCause());
    }
}

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From source file:com.cloudera.hoop.client.fs.HoopFileSystem.java

/**
 * Validates the status of an <code>HttpURLConnection</code> against an expected HTTP
 * status code. If the current status code is not the expected one it throws an exception
 * with a detail message using Server side error messages if available.
 *
 * @param conn the <code>HttpURLConnection</code>.
 * @param expected the expected HTTP status code.
 * @throws IOException thrown if the current status code does not match the expected one.
 *///from  www . j a  v  a2s.c o m
private static void validateResponse(HttpURLConnection conn, int expected) throws IOException {
    int status = conn.getResponseCode();
    if (status != expected) {
        try {
            JSONObject json = (JSONObject) jsonParse(conn);
            throw new IOException(MessageFormat.format("HTTP status [{0}], {1} - {2}", json.get("status"),
                    json.get("reason"), json.get("message")));
        } catch (IOException ex) {
            if (ex.getCause() instanceof IOException) {
                throw (IOException) ex.getCause();
            }
            throw new IOException(
                    MessageFormat.format("HTTP status [{0}], {1}", status, conn.getResponseMessage()));
        }
    }
}

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