/*
 * Copyright 2013-2021 the original author or authors.
 *
 * Licensed 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
 *
 *      https://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.springframework.cloud.sleuth.instrument.rsocket;

import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.CompositeByteBuf;
import io.rsocket.metadata.CompositeMetadataCodec;

import org.springframework.cloud.sleuth.propagation.Propagator;

class ByteBufSetter implements Propagator.Setter<CompositeByteBuf> {

	@Override
	public void set(CompositeByteBuf carrier, String key, String value) {
		final ByteBufAllocator alloc = carrier.alloc();
		CompositeMetadataCodec.encodeAndAddMetadataWithCompression(carrier, alloc, key,
				ByteBufUtil.writeUtf8(alloc, value));
	}

}
