Examples with Decoder io.cdap.cdap.common.io.Decoder used on opensource projects

Example 1 with Decoder

use of io.cdap.cdap.common.io.Decoder in project cdap by caskdata.

the class CodecTest method testCodec.

@Test
public void testCodec() throws IOException {
    PipedOutputStream output = new PipedOutputStream();
    PipedInputStream input = new PipedInputStream(output);
    Encoder encoder = new BinaryEncoder(output);
    Decoder decoder = new BinaryDecoder(input);
    encoder.writeNull();
    Assert.assertNull(decoder.readNull());
    encoder.writeBool(true);
    Assert.assertTrue(decoder.readBool());
    encoder.writeBool(false);
    Assert.assertFalse(decoder.readBool());
    encoder.writeInt(0);
    Assert.assertEquals(0, decoder.readInt());
    encoder.writeInt(-1);
    Assert.assertEquals(-1, decoder.readInt());
    encoder.writeInt(1234);
    Assert.assertEquals(1234, decoder.readInt());
    encoder.writeInt(-1234);
    Assert.assertEquals(-1234, decoder.readInt());
    encoder.writeInt(Short.MAX_VALUE);
    Assert.assertEquals(Short.MAX_VALUE, decoder.readInt());
    encoder.writeInt(Short.MIN_VALUE);
    Assert.assertEquals(Short.MIN_VALUE, decoder.readInt());
    encoder.writeInt(Integer.MAX_VALUE);
    Assert.assertEquals(Integer.MAX_VALUE, decoder.readInt());
    encoder.writeInt(Integer.MIN_VALUE);
    Assert.assertEquals(Integer.MIN_VALUE, decoder.readInt());
    encoder.writeLong(0);
    Assert.assertEquals(0, decoder.readLong());
    encoder.writeLong(-20);
    Assert.assertEquals(-20, decoder.readLong());
    encoder.writeLong(30000);
    Assert.assertEquals(30000, decoder.readLong());
    encoder.writeLong(-600000);
    Assert.assertEquals(-600000, decoder.readLong());
    encoder.writeLong(Integer.MAX_VALUE);
    Assert.assertEquals(Integer.MAX_VALUE, decoder.readLong());
    encoder.writeLong(Integer.MIN_VALUE);
    Assert.assertEquals(Integer.MIN_VALUE, decoder.readLong());
    encoder.writeLong(Long.MAX_VALUE);
    Assert.assertEquals(Long.MAX_VALUE, decoder.readLong());
    encoder.writeLong(Long.MIN_VALUE);
    Assert.assertEquals(Long.MIN_VALUE, decoder.readLong());
    encoder.writeFloat(3.14f);
    Assert.assertEquals(3.14f, decoder.readFloat(), 0.0000001f);
    encoder.writeFloat(Short.MAX_VALUE);
    Assert.assertEquals(Short.MAX_VALUE, decoder.readFloat(), 0.0000001f);
    encoder.writeFloat(Integer.MIN_VALUE);
    Assert.assertEquals(Integer.MIN_VALUE, decoder.readFloat(), 0.0000001f);
    encoder.writeFloat((long) Integer.MAX_VALUE * Short.MAX_VALUE);
    Assert.assertEquals((long) Integer.MAX_VALUE * Short.MAX_VALUE, decoder.readFloat(), 0.0000001f);
    encoder.writeFloat(Float.MAX_VALUE);
    Assert.assertEquals(Float.MAX_VALUE, decoder.readFloat(), 0.0000001f);
    encoder.writeFloat(Float.MIN_VALUE);
    Assert.assertEquals(Float.MIN_VALUE, decoder.readFloat(), 0.0000001f);
    encoder.writeDouble(Math.E);
    Assert.assertEquals(Math.E, decoder.readDouble(), 0.0000001f);
    encoder.writeDouble(Integer.MAX_VALUE);
    Assert.assertEquals(Integer.MAX_VALUE, decoder.readDouble(), 0.0000001f);
    encoder.writeDouble(Long.MIN_VALUE);
    Assert.assertEquals(Long.MIN_VALUE, decoder.readDouble(), 0.0000001f);
    encoder.writeDouble((long) Integer.MAX_VALUE * Short.MAX_VALUE);
    Assert.assertEquals((long) Integer.MAX_VALUE * Short.MAX_VALUE, decoder.readDouble(), 0.0000001f);
    encoder.writeDouble(Double.MAX_VALUE);
    Assert.assertEquals(Double.MAX_VALUE, decoder.readDouble(), 0.0000001f);
    encoder.writeDouble(Double.MIN_VALUE);
    Assert.assertEquals(Double.MIN_VALUE, decoder.readDouble(), 0.0000001f);
    encoder.writeString("This is a testing message");
    Assert.assertEquals("This is a testing message", decoder.readString());
    String str = Character.toString((char) 200) + Character.toString((char) 20000) + Character.toString((char) 40000);
    encoder.writeString(str);
    Assert.assertEquals(str, decoder.readString());
    ByteBuffer buf = ByteBuffer.allocate(12);
    buf.asIntBuffer().put(10).put(1024).put(9999999);
    encoder.writeBytes(buf);
    IntBuffer inBuf = decoder.readBytes().asIntBuffer();
    Assert.assertEquals(10, inBuf.get());
    Assert.assertEquals(1024, inBuf.get());
    Assert.assertEquals(9999999, inBuf.get());
}

Example 2 with Decoder

use of io.cdap.cdap.common.io.Decoder in project cdap by caskdata.

the class KeyIdentifierCodec method decode.

@Override
public KeyIdentifier decode(byte[] data) throws IOException {
    ByteArrayInputStream bis = new ByteArrayInputStream(data);
    Decoder decoder = new BinaryDecoder(bis);
    DatumReader<KeyIdentifier> reader = readerFactory.create(KEY_IDENTIFIER_TYPE, KeyIdentifier.Schemas.getCurrentSchema());
    try {
        int readVersion = decoder.readInt();
        Schema readSchema = KeyIdentifier.Schemas.getSchemaVersion(readVersion);
        if (readSchema == null) {
            throw new IOException("Unknown schema version for KeyIdentifier: " + readVersion);
        }
        return reader.read(decoder, readSchema);
    } catch (IOException e) {
        // As a fallback, try deserializing from JSON format.
        try {
            return gson.fromJson(new String(data, StandardCharsets.UTF_8), KeyIdentifier.class);
        } catch (JsonSyntaxException jse) {
            // For backwards compatibility, throw an IOException with the initial exception wrapped.
            throw new IOException("Failed to deserialize KeyIdentifier", e);
        }
    }
}

Example 3 with Decoder

use of io.cdap.cdap.common.io.Decoder in project cdap by caskdata.

the class UserIdentityCodec method decode.

@Override
public UserIdentity decode(byte[] data) throws IOException {
    ByteArrayInputStream bis = new ByteArrayInputStream(data);
    Decoder decoder = new BinaryDecoder(bis);
    DatumReader<UserIdentity> reader = readerFactory.create(ACCESS_TOKEN_IDENTIFIER_TYPE, UserIdentity.Schemas.getCurrentSchema());
    int readVersion = decoder.readInt();
    Schema readSchema = UserIdentity.Schemas.getSchemaVersion(readVersion);
    if (readSchema == null) {
        throw new IOException("Unknown schema version for AccessTokenIdentifier: " + readVersion);
    }
    return reader.read(decoder, readSchema);
}

Example 4 with Decoder

use of io.cdap.cdap.common.io.Decoder in project cdap by caskdata.

the class AccessTokenCodec method decode.

@Override
public AccessToken decode(byte[] data) throws IOException {
    ByteArrayInputStream bis = new ByteArrayInputStream(data);
    Decoder decoder = new BinaryDecoder(bis);
    DatumReader<AccessToken> reader = readerFactory.create(ACCESS_TOKEN_TYPE, AccessToken.Schemas.getCurrentSchema());
    int readVersion = decoder.readInt();
    Schema readSchema = AccessToken.Schemas.getSchemaVersion(readVersion);
    if (readSchema == null) {
        throw new IOException("Unknown schema version for AccessToken: " + readVersion);
    }
    return reader.read(decoder, readSchema);
}