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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.clustercontroller.core;
/**
* Base class for distributor/content node RPC requests that are bound
* to a particular cluster state version.
*/
public abstract class ClusterStateVersionSpecificRequest {
private final NodeInfo nodeInfo;
private final int clusterStateVersion;
private Reply reply;
public ClusterStateVersionSpecificRequest(NodeInfo nodeInfo, int clusterStateVersion) {
this.nodeInfo = nodeInfo;
this.clusterStateVersion = clusterStateVersion;
}
public NodeInfo getNodeInfo() { return nodeInfo; }
public int getClusterStateVersion() { return clusterStateVersion; }
public void setReply(Reply reply) { this.reply = reply; }
public Reply getReply() { return reply; }
public static class Reply {
final int returnCode;
final String returnMessage;
final int actualVersion;
public Reply() {
this(0, null);
}
public Reply(int returnCode, String returnMessage) {
this.returnCode = returnCode;
this.returnMessage = returnMessage;
this.actualVersion = -1;
}
private Reply(int actualVersion) {
this.returnCode = 0;
this.returnMessage = null;
this.actualVersion = actualVersion;
}
public static Reply withActualVersion(int version) {
return new Reply(version);
}
/** Returns whether this is an error response */
public boolean isError() { return returnCode != 0; }
/** Returns the return code, which is 0 if this request was successful */
public int getReturnCode() { return returnCode; }
/** Returns the message returned, or null if none */
public String getReturnMessage() { return returnMessage; }
/** Returns actual cluster state version active on node, or -1 if reply does not contain this information */
public int getActualVersion() { return actualVersion; }
}
}
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