/
ConnectRequest.java
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/
ConnectRequest.java
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/*
* Copyright 2015 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
*
* 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 io.atomix.protocols.raft.protocol;
import java.util.Objects;
import static com.google.common.base.MoreObjects.toStringHelper;
import static com.google.common.base.Preconditions.checkArgument;
/**
* Connect client request.
* <p>
* Connect requests are sent by clients to specific servers when first establishing a connection.
* Connections must be associated with a specific client and must be established
* each time the client switches servers. A client may only be connected to a single server at any
* given time.
*
* @author <a href="http://github.com/kuujo">Jordan Halterman</a>
*/
public class ConnectRequest extends AbstractRaftRequest {
/**
* Returns a new connect client request builder.
*
* @return A new connect client request builder.
*/
public static Builder builder() {
return new Builder();
}
private final long session;
private final long connection;
public ConnectRequest(long session, long connection) {
this.session = session;
this.connection = connection;
}
/**
* Returns the connecting session ID.
*
* @return The connecting session ID.
*/
public long session() {
return session;
}
/**
* Returns the connection ID.
*
* @return The connection ID.
*/
public long connection() {
return connection;
}
@Override
public int hashCode() {
return Objects.hash(getClass(), session);
}
@Override
public boolean equals(Object object) {
return object instanceof ConnectRequest && ((ConnectRequest) object).session == session;
}
@Override
public String toString() {
return toStringHelper(this)
.add("session", session)
.add("connection", connection)
.toString();
}
/**
* Register client request builder.
*/
public static class Builder extends AbstractRaftRequest.Builder<Builder, ConnectRequest> {
private long session;
private long connection;
/**
* Sets the connecting session ID.
*
* @param session The connecting session ID.
* @return The connect request builder.
*/
public Builder withSession(long session) {
checkArgument(session > 0, "session must be positive");
this.session = session;
return this;
}
/**
* Sets the connection ID.
*
* @param connection The connection ID.
* @return The connect request builder.
*/
public Builder withConnection(long connection) {
checkArgument(connection > 0, "connection must be positive");
this.connection = connection;
return this;
}
@Override
protected void validate() {
super.validate();
checkArgument(session > 0, "session must be positive");
checkArgument(connection > 0, "connection must be positive");
}
@Override
public ConnectRequest build() {
validate();
return new ConnectRequest(session, connection);
}
}
}