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Reactive Relational Database Connectivity Driver Implementation for Postgresql
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/*
* Copyright 2017 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 io.r2dbc.postgresql.message.frontend;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.r2dbc.postgresql.util.Assert;
import org.reactivestreams.Publisher;
import reactor.core.publisher.Mono;
import java.util.Objects;
import static io.r2dbc.postgresql.message.frontend.FrontendMessageUtils.writeByte;
import static io.r2dbc.postgresql.message.frontend.FrontendMessageUtils.writeCStringUTF8;
import static io.r2dbc.postgresql.message.frontend.FrontendMessageUtils.writeLengthPlaceholder;
import static io.r2dbc.postgresql.message.frontend.FrontendMessageUtils.writeSize;
/**
* The CopyFail message.
*/
public final class CopyFail implements FrontendMessage {
private final String message;
/**
* Create a new message.
*
* @param message an error message to report as the cause of failure
* @throws IllegalArgumentException if {@code message} is {@code null}
*/
public CopyFail(String message) {
this.message = Assert.requireNonNull(message, "message must not be null");
}
@Override
public Publisher encode(ByteBufAllocator byteBufAllocator) {
Assert.requireNonNull(byteBufAllocator, "byteBufAllocator must not be null");
return Mono.fromSupplier(() -> {
ByteBuf out = byteBufAllocator.ioBuffer();
writeByte(out, 'f');
writeLengthPlaceholder(out);
writeCStringUTF8(out, this.message);
return writeSize(out);
});
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
CopyFail that = (CopyFail) o;
return Objects.equals(this.message, that.message);
}
@Override
public int hashCode() {
return Objects.hash(this.message);
}
@Override
public String toString() {
return "CopyFail{" +
"message='" + this.message + '\'' +
'}';
}
}
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