org.apache.pulsar.client.impl.schema.InstantSchema Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.pulsar.client.impl.schema;
import org.apache.pulsar.shade.io.netty.buffer.ByteBuf;
import java.nio.ByteBuffer;
import java.time.Instant;
import org.apache.pulsar.common.schema.SchemaInfo;
import org.apache.pulsar.common.schema.SchemaType;
/**
* A schema for `java.time.Instant`.
*/
public class InstantSchema extends AbstractSchema {
private static final InstantSchema INSTANCE;
private static final SchemaInfo SCHEMA_INFO;
static {
SCHEMA_INFO = SchemaInfoImpl.builder()
.name("Instant")
.type(SchemaType.INSTANT)
.schema(new byte[0]).build();
INSTANCE = new InstantSchema();
}
public static InstantSchema of() {
return INSTANCE;
}
@Override
public byte[] encode(Instant message) {
if (null == message) {
return null;
}
// Instant is accurate to nanoseconds and requires two value storage.
ByteBuffer buffer = ByteBuffer.allocate(Long.BYTES + Integer.BYTES);
buffer.putLong(message.getEpochSecond());
buffer.putInt(message.getNano());
return buffer.array();
}
@Override
public Instant decode(byte[] bytes) {
if (null == bytes) {
return null;
}
ByteBuffer buffer = ByteBuffer.wrap(bytes);
long epochSecond = buffer.getLong();
int nanos = buffer.getInt();
return Instant.ofEpochSecond(epochSecond, nanos);
}
@Override
public Instant decode(ByteBuf byteBuf) {
if (null == byteBuf) {
return null;
}
long epochSecond = byteBuf.readLong();
int nanos = byteBuf.readInt();
return Instant.ofEpochSecond(epochSecond, nanos);
}
@Override
public SchemaInfo getSchemaInfo() {
return SCHEMA_INFO;
}
}