Example usage for java.io DataInput readByte

Introduction

In this page you can find the example usage for java.io DataInput readByte.

Prototype

byte readByte() throws IOException;

Source Link

Document

Reads and returns one input byte.

Usage

From source file:org.apache.geode.internal.cache.Oplog.java

/**
 * @throws DiskAccessException if this file does not belong to our parent
 *///  www.  j  av  a 2s  . c  o m
private void readGemfireVersionRecord(DataInput dis, File f) throws IOException {
    Version recoveredGFVersion = readProductVersionRecord(dis, f);
    final boolean hasDataVersion;
    if ((hasDataVersion = (recoveredGFVersion == Version.TOKEN))) {
        // actual GFE version will be the next record in this case
        byte opCode = dis.readByte();
        if (opCode != OPLOG_GEMFIRE_VERSION) {
            throw new DiskAccessException(LocalizedStrings.Oplog_UNKNOWN_OPCODE_0_FOUND_IN_DISK_OPERATION_LOG
                    .toLocalizedString(opCode), getParent());
        }
        recoveredGFVersion = readProductVersionRecord(dis, f);
    }
    if (this.gfversion == null) {
        this.gfversion = recoveredGFVersion;
    } else {
        assert this.gfversion == recoveredGFVersion;
    }
    if (hasDataVersion) {
        byte opCode = dis.readByte();
        if (opCode != OPLOG_GEMFIRE_VERSION) {
            throw new DiskAccessException(LocalizedStrings.Oplog_UNKNOWN_OPCODE_0_FOUND_IN_DISK_OPERATION_LOG
                    .toLocalizedString(opCode), getParent());
        }
        recoveredGFVersion = readProductVersionRecord(dis, f);
        if (this.dataVersion == null) {
            this.dataVersion = recoveredGFVersion;
        } else {
            assert this.dataVersion == recoveredGFVersion;
        }
    }
}

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From source file:org.apache.geode.internal.cache.Oplog.java

private void readEndOfRecord(DataInput di) throws IOException {
    int b = di.readByte();
    if (b != END_OF_RECORD_ID) {
        if (b == 0) {
            logger.warn(LocalizedMessage.create(LocalizedStrings.Oplog_PARTIAL_RECORD));

            // this is expected if this is the last record and we died while writing
            // it.
            throw new EOFException("found partial last record");
        } else {//from   w  ww.j  a  v a2s.c  om
            // Our implementation currently relies on all unwritten bytes having
            // a value of 0. So throw this exception if we find one we didn't
            // expect.
            throw new IllegalStateException(
                    "expected end of record (byte==" + END_OF_RECORD_ID + ") or zero but found " + b);
        }
    }
}

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From source file:org.apache.geode.internal.InternalDataSerializer.java

/**
 * Reads a {@code TimeUnit} from a {@code DataInput}.
 *
 * @throws IOException A problem occurs while writing to {@code out}
 *//*from w w  w . ja  va  2s .  c  o m*/
private static TimeUnit readTimeUnit(DataInput in) throws IOException {
    InternalDataSerializer.checkIn(in);

    byte type = in.readByte();

    TimeUnit unit;
    switch (type) {
    case TIME_UNIT_NANOSECONDS:
        unit = TimeUnit.NANOSECONDS;
        break;
    case TIME_UNIT_MICROSECONDS:
        unit = TimeUnit.MICROSECONDS;
        break;
    case TIME_UNIT_MILLISECONDS:
        unit = TimeUnit.MILLISECONDS;
        break;
    case TIME_UNIT_SECONDS:
        unit = TimeUnit.SECONDS;
        break;
    default:
        throw new IOException(LocalizedStrings.DataSerializer_UNKNOWN_TIMEUNIT_TYPE_0.toLocalizedString(type));
    }

    if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
        logger.trace(LogMarker.SERIALIZER, "Read TimeUnit: {}", unit);
    }

    return unit;
}

---

From source file:org.apache.geode.internal.InternalDataSerializer.java

/**
 * @throws IOException since 6.6.2/* ww  w  .  j a  va 2 s  .  c  o m*/
 */
private static Object readPdxEnum(DataInput in) throws IOException {
    int dsId = in.readByte();
    int tmp = readArrayLength(in);
    int enumId = dsId << 24 | tmp & 0xFFFFFF;
    if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
        logger.trace(LogMarker.SERIALIZER, "read PdxEnum id={}", enumId);
    }
    InternalCache internalCache = GemFireCacheImpl
            .getForPdx("PDX registry is unavailable because the Cache has been closed.");
    TypeRegistry tr = internalCache.getPdxRegistry();

    Object result = tr.getEnumById(enumId);
    if (result instanceof PdxInstance) {
        getDMStats(internalCache).incPdxInstanceCreations();
    }
    return result;
}

---

From source file:org.apache.geode.internal.InternalDataSerializer.java

public static int readArrayLength(DataInput in) throws IOException {
    byte code = in.readByte();
    if (code == NULL_ARRAY) {
        return -1;
    } else {//from  w  w  w .  j  a  v  a 2  s. co m
        int result = ubyteToInt(code);
        if (result > MAX_BYTE_ARRAY_LEN) {
            if (code == SHORT_ARRAY_LEN) {
                result = in.readUnsignedShort();
            } else if (code == INT_ARRAY_LEN) {
                result = in.readInt();
            } else {
                throw new IllegalStateException("unexpected array length code=" + code);
            }
        }
        return result;
    }
}

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From source file:org.apache.geode.internal.InternalDataSerializer.java

public static Object readDSFID(final DataInput in) throws IOException, ClassNotFoundException {
    checkIn(in);// w w  w  . ja va2  s  .c o m
    byte header = in.readByte();
    if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
        logger.trace(LogMarker.SERIALIZER, "readDSFID: header={}", header);
    }
    if (header == DS_FIXED_ID_BYTE) {
        return DSFIDFactory.create(in.readByte(), in);
    } else if (header == DS_FIXED_ID_SHORT) {
        return DSFIDFactory.create(in.readShort(), in);
    } else if (header == DS_NO_FIXED_ID) {
        return readDataSerializableFixedID(in);
    } else if (header == DS_FIXED_ID_INT) {
        return DSFIDFactory.create(in.readInt(), in);
    } else {
        throw new IllegalStateException("unexpected byte: " + header + " while reading dsfid");
    }
}

---

From source file:org.apache.geode.internal.InternalDataSerializer.java

public static int readDSFIDHeader(final DataInput in) throws IOException {
    checkIn(in);//ww  w  .  ja  v  a  2  s. c  o  m
    byte header = in.readByte();
    if (header == DS_FIXED_ID_BYTE) {
        return in.readByte();
    } else if (header == DS_FIXED_ID_SHORT) {
        return in.readShort();
    } else if (header == DS_NO_FIXED_ID) {
        // is that correct??
        return Integer.MAX_VALUE;
    } else if (header == DS_FIXED_ID_INT) {
        return in.readInt();
    } else {
        throw new IllegalStateException("unexpected byte: " + header + " while reading dsfid");
    }
}

---

From source file:org.apache.geode.internal.InternalDataSerializer.java

public static Object basicReadObject(final DataInput in) throws IOException, ClassNotFoundException {
    checkIn(in);//from w  w w .j  av a 2  s  . c o m

    // Read the header byte
    byte header = in.readByte();
    if (logger.isTraceEnabled(LogMarker.SERIALIZER)) {
        logger.trace(LogMarker.SERIALIZER, "basicReadObject: header={}", header);
    }
    switch (header) {
    case DS_FIXED_ID_BYTE:
        return DSFIDFactory.create(in.readByte(), in);
    case DS_FIXED_ID_SHORT:
        return DSFIDFactory.create(in.readShort(), in);
    case DS_FIXED_ID_INT:
        return DSFIDFactory.create(in.readInt(), in);
    case DS_NO_FIXED_ID:
        return readDataSerializableFixedID(in);
    case NULL:
        return null;
    case NULL_STRING:
    case STRING:
    case HUGE_STRING:
    case STRING_BYTES:
    case HUGE_STRING_BYTES:
        return readString(in, header);
    case CLASS:
        return readClass(in);
    case DATE:
        return readDate(in);
    case FILE:
        return readFile(in);
    case INET_ADDRESS:
        return readInetAddress(in);
    case BOOLEAN:
        return readBoolean(in);
    case CHARACTER:
        return readCharacter(in);
    case BYTE:
        return readByte(in);
    case SHORT:
        return readShort(in);
    case INTEGER:
        return readInteger(in);
    case LONG:
        return readLong(in);
    case FLOAT:
        return readFloat(in);
    case DOUBLE:
        return readDouble(in);
    case BYTE_ARRAY:
        return readByteArray(in);
    case ARRAY_OF_BYTE_ARRAYS:
        return readArrayOfByteArrays(in);
    case SHORT_ARRAY:
        return readShortArray(in);
    case STRING_ARRAY:
        return readStringArray(in);
    case INT_ARRAY:
        return readIntArray(in);
    case LONG_ARRAY:
        return readLongArray(in);
    case FLOAT_ARRAY:
        return readFloatArray(in);
    case DOUBLE_ARRAY:
        return readDoubleArray(in);
    case BOOLEAN_ARRAY:
        return readBooleanArray(in);
    case CHAR_ARRAY:
        return readCharArray(in);
    case OBJECT_ARRAY:
        return readObjectArray(in);
    case ARRAY_LIST:
        return readArrayList(in);
    case LINKED_LIST:
        return readLinkedList(in);
    case HASH_SET:
        return readHashSet(in);
    case LINKED_HASH_SET:
        return readLinkedHashSet(in);
    case HASH_MAP:
        return readHashMap(in);
    case IDENTITY_HASH_MAP:
        return readIdentityHashMap(in);
    case HASH_TABLE:
        return readHashtable(in);
    case CONCURRENT_HASH_MAP:
        return readConcurrentHashMap(in);
    case PROPERTIES:
        return readProperties(in);
    case TIME_UNIT:
        return readTimeUnit(in);
    case USER_CLASS:
        return readUserObject(in, in.readByte());
    case USER_CLASS_2:
        return readUserObject(in, in.readShort());
    case USER_CLASS_4:
        return readUserObject(in, in.readInt());
    case VECTOR:
        return readVector(in);
    case STACK:
        return readStack(in);
    case TREE_MAP:
        return readTreeMap(in);
    case TREE_SET:
        return readTreeSet(in);
    case BOOLEAN_TYPE:
        return Boolean.TYPE;
    case CHARACTER_TYPE:
        return Character.TYPE;
    case BYTE_TYPE:
        return Byte.TYPE;
    case SHORT_TYPE:
        return Short.TYPE;
    case INTEGER_TYPE:
        return Integer.TYPE;
    case LONG_TYPE:
        return Long.TYPE;
    case FLOAT_TYPE:
        return Float.TYPE;
    case DOUBLE_TYPE:
        return Double.TYPE;
    case VOID_TYPE:
        return Void.TYPE;

    case USER_DATA_SERIALIZABLE:
        return readUserDataSerializable(in, in.readByte());
    case USER_DATA_SERIALIZABLE_2:
        return readUserDataSerializable(in, in.readShort());
    case USER_DATA_SERIALIZABLE_4:
        return readUserDataSerializable(in, in.readInt());

    case DATA_SERIALIZABLE:
        return readDataSerializable(in);

    case SERIALIZABLE: {
        final boolean isDebugEnabled_SERIALIZER = logger.isTraceEnabled(LogMarker.SERIALIZER);
        Object serializableResult;
        if (in instanceof DSObjectInputStream) {
            serializableResult = ((DSObjectInputStream) in).readObject();
        } else {
            InputStream stream;
            if (in instanceof InputStream) {
                stream = (InputStream) in;
            } else {
                stream = new InputStream() {
                    @Override
                    public int read() throws IOException {
                        try {
                            return in.readUnsignedByte(); // fix for bug 47249
                        } catch (EOFException ignored) {
                            return -1;
                        }
                    }

                };
            }

            ObjectInput ois = new DSObjectInputStream(stream);
            if (stream instanceof VersionedDataStream) {
                Version v = ((VersionedDataStream) stream).getVersion();
                if (v != null && v != Version.CURRENT) {
                    ois = new VersionedObjectInput(ois, v);
                }
            }

            serializableResult = ois.readObject();

            if (isDebugEnabled_SERIALIZER) {
                logger.trace(LogMarker.SERIALIZER, "Read Serializable object: {}", serializableResult);
            }
        }
        if (isDebugEnabled_SERIALIZER) {
            logger.trace(LogMarker.SERIALIZER, "deserialized instanceof {}", serializableResult.getClass());
        }
        return serializableResult;
    }
    case PDX:
        return readPdxSerializable(in);
    case PDX_ENUM:
        return readPdxEnum(in);
    case GEMFIRE_ENUM:
        return readGemFireEnum(in);
    case PDX_INLINE_ENUM:
        return readPdxInlineEnum(in);
    case BIG_INTEGER:
        return readBigInteger(in);
    case BIG_DECIMAL:
        return readBigDecimal(in);
    case UUID:
        return readUUID(in);
    case TIMESTAMP:
        return readTimestamp(in);
    default:
        String s = "Unknown header byte: " + header;
        throw new IOException(s);
    }
}

---

From source file:org.apache.geode.internal.InternalDataSerializer.java

/**
 * Write a variable length long the old way (pre 7.0). Use this only in contexts where you might
 * need to communicate with pre 7.0 members or files.
 *///from w  w  w .  java2 s .c o  m
public static long readVLOld(DataInput in) throws IOException {
    byte code = in.readByte();
    long result;
    if (code < 0) {
        // mask off sign bit
        result = code & 0x7F;
        result <<= 8;
        result |= in.readByte() & 0xFF;
    } else if (code <= MAX_BYTE_VL) {
        result = code;
    } else if (code == INT_VL) {
        result = in.readInt();
    } else if (code == LONG_VL) {
        result = in.readLong();
    } else {
        throw new IllegalStateException("unexpected variable length code=" + code);
    }
    return result;
}

---

From source file:org.apache.geode.internal.InternalDataSerializer.java

/**
 * Decode a long as a variable length array.
 * //w  w  w. j  av  a  2s . c o  m
 * This is taken from the varint encoding in protobufs (BSD licensed). See
 * https://developers.google.com/protocol-buffers/docs/encoding
 */
public static long readUnsignedVL(DataInput in) throws IOException {
    int shift = 0;
    long result = 0;
    while (shift < 64) {
        final byte b = in.readByte();
        result |= (long) (b & 0x7F) << shift;
        if ((b & 0x80) == 0) {
            return result;
        }
        shift += 7;
    }
    throw new GemFireIOException("Malformed variable length integer");
}

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