package org.opendaylight.controller.cluster.raft.messages;
-import org.opendaylight.controller.cluster.raft.ReplicatedLogEntry;
-
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.ArrayList;
import java.util.List;
+import org.opendaylight.controller.cluster.raft.RaftVersions;
+import org.opendaylight.controller.cluster.raft.ReplicatedLogEntry;
/**
* Invoked by leader to replicate log entries (§5.3); also used as
* heartbeat (§5.2).
*/
public class AppendEntries extends AbstractRaftRPC {
+ private static final long serialVersionUID = 1L;
+
+ private static final org.slf4j.Logger LOG = org.slf4j.LoggerFactory.getLogger(AppendEntries.class);
+
// So that follower can redirect clients
private final String leaderId;
// log entries to store (empty for heartbeat;
// may send more than one for efficiency)
- private final List<ReplicatedLogEntry> entries;
+ private transient List<ReplicatedLogEntry> entries;
// leader's commitIndex
private final long leaderCommit;
- public AppendEntries(long term, String leaderId, long prevLogIndex,
- long prevLogTerm, List<ReplicatedLogEntry> entries, long leaderCommit) {
+ // index which has been replicated successfully to all followers, -1 if none
+ private final long replicatedToAllIndex;
+
+ private final short payloadVersion;
+
+ public AppendEntries(long term, String leaderId, long prevLogIndex, long prevLogTerm,
+ List<ReplicatedLogEntry> entries, long leaderCommit, long replicatedToAllIndex, short payloadVersion) {
super(term);
this.leaderId = leaderId;
this.prevLogIndex = prevLogIndex;
this.prevLogTerm = prevLogTerm;
this.entries = entries;
this.leaderCommit = leaderCommit;
+ this.replicatedToAllIndex = replicatedToAllIndex;
+ this.payloadVersion = payloadVersion;
+ }
+
+ private void writeObject(ObjectOutputStream out) throws IOException {
+ out.writeShort(RaftVersions.CURRENT_VERSION);
+ out.defaultWriteObject();
+
+ out.writeInt(entries.size());
+ for(ReplicatedLogEntry e: entries) {
+ out.writeObject(e);
+ }
+ }
+
+ private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
+ in.readShort(); // raft version
+
+ in.defaultReadObject();
+
+ int size = in.readInt();
+ entries = new ArrayList<>(size);
+ for(int i = 0; i < size; i++) {
+ entries.add((ReplicatedLogEntry) in.readObject());
+ }
}
public String getLeaderId() {
return leaderCommit;
}
- @Override public String toString() {
- return "AppendEntries{" +
- "leaderId='" + leaderId + '\'' +
- ", prevLogIndex=" + prevLogIndex +
- ", prevLogTerm=" + prevLogTerm +
- ", entries=" + entries +
- ", leaderCommit=" + leaderCommit +
- '}';
+ public long getReplicatedToAllIndex() {
+ return replicatedToAllIndex;
+ }
+
+ public short getPayloadVersion() {
+ return payloadVersion;
+ }
+
+ @Override
+ public String toString() {
+ StringBuilder builder = new StringBuilder();
+ builder.append("AppendEntries [leaderId=").append(leaderId).append(", prevLogIndex=").append(prevLogIndex)
+ .append(", prevLogTerm=").append(prevLogTerm).append(", leaderCommit=").append(leaderCommit)
+ .append(", replicatedToAllIndex=").append(replicatedToAllIndex).append(", payloadVersion=")
+ .append(payloadVersion).append(", entries=").append(entries).append("]");
+ return builder.toString();
}
}