Example usage for java.io DataInputStream read

Introduction

In this page you can find the example usage for java.io DataInputStream read.

Prototype

public final int read(byte b[], int off, int len) throws IOException

Source Link

Document

Reads up to len bytes of data from the contained input stream into an array of bytes.

Usage

From source file:de.ingrid.communication.authentication.BasicSchemeConnector.java

private boolean readMessageFromHttpProxy(DataInputStream dataInput, StringBuffer errorBuffer)
        throws IOException {
    boolean ret = false;
    byte[] buffer = new byte[1024];
    while ((dataInput.read(buffer, 0, buffer.length)) != -1) {
        String readedString = new String(buffer);
        errorBuffer.append(readedString);
        if (readedString.toLowerCase().indexOf(ACCEPT_MESSAGE_HTTP_1_0.toLowerCase()) > -1) {
            ret = true;//from   w  w  w .j  a  v  a  2s .c om
            break;
        } else if (readedString.toLowerCase().indexOf(ACCEPT_MESSAGE_HTTP_1_1.toLowerCase()) > -1) {
            ret = true;
            break;
        }
        buffer = new byte[1024];
    }
    return ret;
}

From source file:com.facebook.infrastructure.db.ReadResponse.java

public ReadResponse deserialize(DataInputStream dis) throws IOException {
    String table = dis.readUTF();
    int digestSize = dis.readInt();
    byte[] digest = new byte[digestSize];
    dis.read(digest, 0, digestSize);
    boolean isDigest = dis.readBoolean();

    Row row = null;//  www.  j  a v a 2s.c om
    if (!isDigest) {
        row = Row.serializer().deserialize(dis);
    }

    ReadResponse rmsg = null;
    if (isDigest) {
        rmsg = new ReadResponse(table, digest);
    } else {
        rmsg = new ReadResponse(table, row);
    }
    rmsg.setIsDigestQuery(isDigest);
    return rmsg;
}

From source file:org.apache.hadoop.io.crypto.tool.CryptoApiTool.java

private void writeStream(DataInputStream input, CompressionOutputStream output) throws IOException {
    int read = 0;
    byte[] buffer = new byte[128 * 1024];

    // while (0 < (read = input.read(buffer, 0, 64 * 1024))) {
    while (0 < (read = input.read(buffer, 0, 67 * 1024))) {
        output.write(buffer, 0, read);/*w w w .  j  a  v  a 2 s .c  o m*/
    }
    output.flush();

}

From source file:gobblin.metrics.reporter.util.SchemaRegistryVersionWriter.java

@Override
public Schema readSchemaVersioningInformation(DataInputStream inputStream) throws IOException {
    if (inputStream.readByte() != KafkaAvroSchemaRegistry.MAGIC_BYTE) {
        throw new IOException("MAGIC_BYTE not found in Avro message.");
    }/*from   w  w w.ja va 2 s  .c  o  m*/

    byte[] byteKey = new byte[schemaIdLengthBytes];
    int bytesRead = inputStream.read(byteKey, 0, schemaIdLengthBytes);
    if (bytesRead != schemaIdLengthBytes) {
        throw new IOException(
                String.format("Could not read enough bytes for schema id. Expected: %d, found: %d.",
                        schemaIdLengthBytes, bytesRead));
    }
    String hexKey = Hex.encodeHexString(byteKey);

    try {
        return this.registry.getSchemaByKey(hexKey);
    } catch (SchemaRegistryException sre) {
        throw new IOException("Failed to retrieve schema for key " + hexKey, sre);
    }
}

From source file:org.apache.hadoop.hdfs.server.namenode.metrics.TestNameNodeMetrics.java

private void readFile(FileSystem fileSys, Path name) throws IOException {
    //Just read file so that getNumBlockLocations are incremented
    DataInputStream stm = fileSys.open(name);
    byte[] buffer = new byte[4];
    stm.read(buffer, 0, 4);
    stm.close();// w w  w .  j  a  v a  2s .c o  m
}

From source file:org.apache.helix.tools.ClusterSetup.java

private static byte[] readFile(String filePath) throws IOException {
    File file = new File(filePath);

    int size = (int) file.length();
    byte[] bytes = new byte[size];
    DataInputStream dis = new DataInputStream(new FileInputStream(file));
    int read = 0;
    int numRead = 0;
    while (read < bytes.length && (numRead = dis.read(bytes, read, bytes.length - read)) >= 0) {
        read = read + numRead;/*w w w  .ja v a  2s.  c om*/
    }
    dis.close();
    return bytes;
}

From source file:edu.cornell.med.icb.goby.compression.HybridChunkCodec2.java

@Override
public Message decode(final byte[] bytes) throws IOException {
    final DataInputStream completeChunkData = new DataInputStream(new ByteArrayInputStream(bytes));
    final int compressedSize = completeChunkData.readInt();
    final int storedChecksum = completeChunkData.readInt();

    final byte[] compressedBytes = new byte[compressedSize];
    final int read = completeChunkData.read(compressedBytes, 0, compressedSize);
    assert read == compressedSize : "read size must match recorded size.";
    crc32.reset();//from w w  w  .j a  v  a2 s . c o m

    crc32.update(compressedBytes);
    final int computedChecksum = (int) crc32.getValue();
    if (computedChecksum != storedChecksum) {
        throw new InvalidChecksumException();
    }
    final int bytesLeft = bytes.length - 4 - compressedSize - 4;
    final byte[] leftOver = new byte[bytesLeft];
    // 8 is the number of bytes to encode the length of the compressed chunk, plus
    // the number of bytes to encode the checksum.
    System.arraycopy(bytes, 8 + compressedSize, leftOver, 0, bytesLeft);
    final Message reducedProtoBuff = bzip2Codec.decode(leftOver);
    if (reducedProtoBuff == null) {
        return null;
    }
    return handler.decompressCollection(reducedProtoBuff, compressedBytes);
}

From source file:edu.cornell.med.icb.goby.compression.HybridChunkCodec1.java

@Override
public Message decode(final byte[] bytes) throws IOException {
    final DataInputStream completeChunkData = new DataInputStream(new FastByteArrayInputStream(bytes));
    final int compressedSize = completeChunkData.readInt();
    final int storedChecksum = completeChunkData.readInt();

    final byte[] compressedBytes = new byte[compressedSize];
    final int read = completeChunkData.read(compressedBytes, 0, compressedSize);
    assert read == compressedSize : "read size must match recorded size.";
    crc32.reset();// w ww  . j  a va2s .c o m

    crc32.update(compressedBytes);
    final int computedChecksum = (int) crc32.getValue();
    if (computedChecksum != storedChecksum) {
        throw new InvalidChecksumException();
    }
    final int bytesLeft = bytes.length - 4 - compressedSize - 4;
    final byte[] leftOver = new byte[bytesLeft];
    // 8 is the number of bytes to encode the length of the compressed chunk, plus
    // the number of bytes to encode the checksum.
    System.arraycopy(bytes, 8 + compressedSize, leftOver, 0, bytesLeft);
    final Message reducedProtoBuff = gzipCodec.decode(leftOver);
    if (reducedProtoBuff == null) {
        return null;
    }
    return handler.decompressCollection(reducedProtoBuff, compressedBytes);
}

From source file:org.apache.helix.manager.zk.ZKHelixAdmin.java

private static byte[] readFile(String filePath) throws IOException {
    File file = new File(filePath);

    int size = (int) file.length();
    byte[] bytes = new byte[size];
    DataInputStream dis = null;
    try {/*from   w ww .j a v a  2s.co  m*/
        dis = new DataInputStream(new FileInputStream(file));
        int read = 0;
        int numRead = 0;
        while (read < bytes.length && (numRead = dis.read(bytes, read, bytes.length - read)) >= 0) {
            read = read + numRead;
        }
        return bytes;
    } finally {
        if (dis != null) {
            dis.close();
        }
    }
}

From source file:com.linkedin.helix.tools.ClusterSetup.java

private static byte[] readFile(String filePath) throws IOException {
    File file = new File(filePath);

    int size = (int) file.length();
    byte[] bytes = new byte[size];
    DataInputStream dis = new DataInputStream(new FileInputStream(file));
    int read = 0;
    int numRead = 0;
    while (read < bytes.length && (numRead = dis.read(bytes, read, bytes.length - read)) >= 0) {
        read = read + numRead;//from  ww w  .ja v a2  s  .  c  om
    }
    return bytes;
}