@Override
public int hashCode() {
int result = pendingValues != null ? pendingValues.hashCode() : 0;
result = 31 * result + (bookedInstances != null ? bookedInstances.hashCode() : 0);
result = 31 * result + (paxosInstances != null ? paxosInstances.hashCode() : 0);
return result;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
ProposerContextImpl that = (ProposerContextImpl) o;
if (bookedInstances != null
? !bookedInstances.equals(that.bookedInstances)
: that.bookedInstances != null) {
return false;
}
if (paxosInstances != null
? !paxosInstances.equals(that.paxosInstances)
: that.paxosInstances != null) {
return false;
}
if (pendingValues != null
? !pendingValues.equals(that.pendingValues)
: that.pendingValues != null) {
return false;
}
return true;
}
@Override
public void leave() {
pendingValues.clear();
bookedInstances.clear();
commonState.setNextInstanceId(0);
paxosInstances.leave();
}
/**
* This patches the booked instances that are pending in case the configuration of the cluster
* changes. This should be called only when we learn a ConfigurationChangeState i.e. when we
* receive an accepted for such a message. This won't "learn" the message, as in applying it on
* the cluster configuration, but will just update properly the set of acceptors for pending
* instances.
*/
@Override
public void patchBookedInstances(ClusterMessage.ConfigurationChangeState value) {
if (value.getJoin() != null) {
for (InstanceId instanceId : bookedInstances.keySet()) {
PaxosInstance instance = paxosInstances.getPaxosInstance(instanceId);
if (instance.getAcceptors() != null) {
instance
.getAcceptors()
.remove(commonState.configuration().getMembers().get(value.getJoin()));
getLogger(ProposerContext.class)
.debug(
"For booked instance "
+ instance
+ " removed gone member "
+ commonState.configuration().getMembers().get(value.getJoin())
+ " added joining member "
+ value.getJoinUri());
if (!instance.getAcceptors().contains(value.getJoinUri())) {
instance.getAcceptors().add(value.getJoinUri());
}
}
}
} else if (value.getLeave() != null) {
for (InstanceId instanceId : bookedInstances.keySet()) {
PaxosInstance instance = paxosInstances.getPaxosInstance(instanceId);
if (instance.getAcceptors() != null) {
getLogger(ProposerContext.class)
.debug(
"For booked instance "
+ instance
+ " removed leaving member "
+ value.getLeave()
+ " (at URI "
+ commonState.configuration().getMembers().get(value.getLeave())
+ ")");
instance
.getAcceptors()
.remove(commonState.configuration().getMembers().get(value.getLeave()));
}
}
}
}
@Override
public PaxosInstance getPaxosInstance(InstanceId instanceId) {
return paxosInstances.getPaxosInstance(instanceId);
}