@SuppressWarnings("unchecked")
public void testAppendTermAndLeaderUpdated() throws Throwable {
runOnServer(
() -> {
int leader =
serverContext
.getClusterState()
.getActiveMemberStates()
.iterator()
.next()
.getMember()
.id();
serverContext.setTerm(1);
AppendRequest request =
AppendRequest.builder()
.withTerm(2)
.withLeader(leader)
.withEntries(Collections.EMPTY_LIST)
.withCommitIndex(0)
.withGlobalIndex(0)
.build();
AppendResponse response = state.append(request).get();
assertEquals(response.status(), Status.OK);
assertTrue(response.succeeded());
assertEquals(serverContext.getTerm(), 2L);
assertEquals(serverContext.getLeader().hashCode(), leader);
assertEquals(response.term(), 2L);
});
}
public void testAppendOnNonEmptyLog() throws Throwable {
runOnServer(
() -> {
serverContext.setTerm(1);
append(1, 1);
AppendRequest request =
AppendRequest.builder()
.withTerm(1)
.withLeader(
serverContext
.getClusterState()
.getActiveMemberStates()
.iterator()
.next()
.getMember()
.id())
.withLogIndex(0)
.withLogTerm(0)
.withCommitIndex(2)
.withGlobalIndex(0)
.withEntries(new TestEntry().setIndex(2).setTerm(1))
.build();
AppendResponse response = state.append(request).get();
assertEquals(response.status(), Status.OK);
assertTrue(response.succeeded());
assertEquals(response.term(), 1L);
assertEquals(response.logIndex(), 2L);
assertEquals(serverContext.getLog().length(), 2L);
assertNotNull(get(2));
});
}
@SuppressWarnings("unchecked")
public void testAppendUpdatesLeaderAndTerm() throws Throwable {
runOnServer(
() -> {
serverContext.setTerm(1);
AppendRequest request =
AppendRequest.builder()
.withTerm(2)
.withLeader(members.get(1).hashCode())
.withEntries(Collections.EMPTY_LIST)
.withLogIndex(0)
.withLogTerm(0)
.withCommitIndex(0)
.withGlobalIndex(0)
.build();
AppendResponse response = state.append(request).get();
threadAssertEquals(serverContext.getTerm(), 2L);
threadAssertEquals(
serverContext.getLeader().serverAddress(), members.get(1).serverAddress());
threadAssertEquals(serverContext.getLastVotedFor(), 0);
threadAssertEquals(response.term(), 2L);
threadAssertTrue(response.succeeded());
});
}
@SuppressWarnings("unchecked")
public void testRejectAppendOnTerm() throws Throwable {
runOnServer(
() -> {
serverContext.setTerm(2);
append(2, 2);
AppendRequest request =
AppendRequest.builder()
.withTerm(1)
.withLeader(
serverContext
.getClusterState()
.getActiveMemberStates()
.iterator()
.next()
.getMember()
.id())
.withEntries(Collections.EMPTY_LIST)
.withLogIndex(2)
.withLogTerm(2)
.withCommitIndex(0)
.withGlobalIndex(0)
.build();
AppendResponse response = state.append(request).get();
assertEquals(response.status(), Status.OK);
assertFalse(response.succeeded());
assertEquals(response.term(), 2L);
assertEquals(response.logIndex(), 2L);
});
}