Examples with DestroyRaftGroupCmd com.hazelcast.cp.internal.raft.command.DestroyRaftGroupCmd used on opensource projects

Example 1 with DestroyRaftGroupCmd

use of com.hazelcast.cp.internal.raft.command.DestroyRaftGroupCmd in project hazelcast by hazelcast.

the class RaftNodeImpl method applyRestoredRaftGroupCommands.

private void applyRestoredRaftGroupCommands(SnapshotEntry snapshot) {
    // If there is a single Raft group command after the last snapshot,
    // here we cannot know if the that command is committed or not so we
    // just "pre-apply" that command without committing it.
    // If there are multiple Raft group commands, it is definitely known
    // that all the command up to the last command are committed,
    // but the last command may not be committed.
    // This conclusion boils down to the fact that once you append a Raft
    // group command, you cannot append a new one before committing it.
    RaftLog log = state.log();
    LogEntry committedEntry = null;
    LogEntry lastAppliedEntry = null;
    for (long i = snapshot != null ? snapshot.index() + 1 : 1; i <= log.lastLogOrSnapshotIndex(); i++) {
        LogEntry entry = log.getLogEntry(i);
        assert entry != null : "index: " + i;
        if (entry.operation() instanceof RaftGroupCmd) {
            committedEntry = lastAppliedEntry;
            lastAppliedEntry = entry;
        }
    }
    if (committedEntry != null) {
        state.commitIndex(committedEntry.index());
        applyLogEntries();
    }
    if (lastAppliedEntry != null) {
        if (lastAppliedEntry.operation() instanceof UpdateRaftGroupMembersCmd) {
            setStatus(UPDATING_GROUP_MEMBER_LIST);
            Collection<RaftEndpoint> members = ((UpdateRaftGroupMembersCmd) lastAppliedEntry.operation()).getMembers();
            updateGroupMembers(lastAppliedEntry.index(), members);
        } else if (lastAppliedEntry.operation() instanceof DestroyRaftGroupCmd) {
            setStatus(TERMINATING);
        } else {
            throw new IllegalStateException("Invalid group command for restore: " + lastAppliedEntry);
        }
    }
}

Example 2 with DestroyRaftGroupCmd

use of com.hazelcast.cp.internal.raft.command.DestroyRaftGroupCmd in project hazelcast by hazelcast.

the class DestroyRaftGroupTest method when_destroyOpIsAppended_then_statusIsTerminating.

@Test
public void when_destroyOpIsAppended_then_statusIsTerminating() {
    group = newGroup(2);
    group.start();
    RaftNodeImpl leader = group.waitUntilLeaderElected();
    RaftNodeImpl follower = group.getAnyFollowerNode();
    group.dropAllMessagesToMember(follower.getLocalMember(), leader.getLocalMember());
    leader.replicate(new DestroyRaftGroupCmd());
    assertTrueEventually(() -> {
        assertEquals(RaftNodeStatus.TERMINATING, getStatus(leader));
        assertEquals(RaftNodeStatus.TERMINATING, getStatus(follower));
    });
}

Example 3 with DestroyRaftGroupCmd

use of com.hazelcast.cp.internal.raft.command.DestroyRaftGroupCmd in project hazelcast by hazelcast.

the class DestroyRaftGroupTest method when_destroyOpIsTruncated_then_statusIsActive.

@Test
public void when_destroyOpIsTruncated_then_statusIsActive() throws ExecutionException, InterruptedException {
    group = newGroup(3);
    group.start();
    RaftNodeImpl leader = group.waitUntilLeaderElected();
    RaftNodeImpl[] followers = group.getNodesExcept(leader.getLocalMember());
    group.dropMessagesToAll(leader.getLocalMember(), AppendRequest.class);
    leader.replicate(new DestroyRaftGroupCmd());
    group.split(leader.getLocalMember());
    assertTrueEventually(() -> {
        for (RaftNodeImpl raftNode : followers) {
            RaftEndpoint leaderEndpoint = getLeaderMember(raftNode);
            assertNotNull(leaderEndpoint);
            assertNotEquals(leader.getLocalMember(), leaderEndpoint);
        }
    });
    RaftNodeImpl newLeader = group.getNode(getLeaderMember(followers[0]));
    for (int i = 0; i < 10; i++) {
        newLeader.replicate(new ApplyRaftRunnable("val" + i)).get();
    }
    group.merge();
    assertTrueEventually(() -> {
        for (RaftNodeImpl raftNode : group.getNodes()) {
            assertEquals(RaftNodeStatus.ACTIVE, getStatus(raftNode));
        }
    });
}

Example 4 with DestroyRaftGroupCmd

use of com.hazelcast.cp.internal.raft.command.DestroyRaftGroupCmd in project hazelcast by hazelcast.

the class DestroyRaftGroupTest method when_destroyOpIsAppendedButNotCommitted_then_cannotAppendNewEntry.

@Test
public void when_destroyOpIsAppendedButNotCommitted_then_cannotAppendNewEntry() throws ExecutionException, InterruptedException {
    group = newGroup(2);
    group.start();
    RaftNodeImpl leader = group.waitUntilLeaderElected();
    RaftNodeImpl follower = group.getAnyFollowerNode();
    group.dropAllMessagesToMember(leader.getLocalMember(), follower.getLocalMember());
    leader.replicate(new DestroyRaftGroupCmd());
    try {
        leader.replicate(new ApplyRaftRunnable("val")).joinInternal();
        fail();
    } catch (CannotReplicateException ignored) {
    }
}