Examples with RestartSignificantConfig com.netflix.exhibitor.core.state.RestartSignificantConfig used on opensource projects

Example 6 with RestartSignificantConfig

use of com.netflix.exhibitor.core.state.RestartSignificantConfig in project exhibitor by soabase.

the class TestRollingConfigChange method testDownLastInstance.

@Test
public void testDownLastInstance() throws Exception {
    ServerList serverList = new ServerList("1:one,2:two,3:three");
    RemoteInstanceRequestClient mockClient = new RemoteInstanceRequestClient() {

        @Override
        public void close() throws IOException {
        }

        @Override
        public <T> T getWebResource(URI remoteUri, MediaType type, Class<T> clazz) throws Exception {
            if (remoteUri.getHost().equals("two")) {
                throw new Exception();
            }
            return clazz.cast("foo");
        }
    };
    ActivityLog log = new ActivityLog(100);
    ActivityQueue activityQueue = new ActivityQueue();
    Exhibitor mockExhibitor = Mockito.mock(Exhibitor.class);
    MonitorRunningInstance mockMonitorRunningInstance = makeMockMonitorRunningInstance();
    Mockito.when(mockExhibitor.getMonitorRunningInstance()).thenReturn(mockMonitorRunningInstance);
    Mockito.when(mockExhibitor.getLog()).thenReturn(log);
    Mockito.when(mockExhibitor.getActivityQueue()).thenReturn(activityQueue);
    Mockito.when(mockExhibitor.getThisJVMHostname()).thenReturn("one");
    Mockito.when(mockExhibitor.getRemoteInstanceRequestClient()).thenReturn(mockClient);
    final AtomicLong modified = new AtomicLong(1);
    ConfigProvider provider = new ConfigProvider() {

        private volatile ConfigCollection config = new PropertyBasedInstanceConfig(new Properties(), new Properties());

        @Override
        public void start() throws Exception {
        }

        @Override
        public void close() throws IOException {
        }

        @Override
        public LoadedInstanceConfig loadConfig() throws Exception {
            return new LoadedInstanceConfig(config, modified.get());
        }

        @Override
        public PseudoLock newPseudoLock() throws Exception {
            return null;
        }

        @Override
        public LoadedInstanceConfig storeConfig(ConfigCollection config, long compareVersion) throws Exception {
            this.config = config;
            modified.incrementAndGet();
            return loadConfig();
        }
    };
    InstanceState state = new InstanceState(serverList, InstanceStateTypes.SERVING, new RestartSignificantConfig(null));
    ConfigManager manager = new ConfigManager(mockExhibitor, provider, 10);
    manager.start();
    try {
        Properties properties = new Properties();
        properties.setProperty(PropertyBasedInstanceConfig.toName(StringConfigs.SERVERS_SPEC, PropertyBasedInstanceConfig.ROOT_PROPERTY_PREFIX), serverList.toSpecString());
        PropertyBasedInstanceConfig config = new PropertyBasedInstanceConfig(properties, DefaultProperties.get(null));
        manager.startRollingConfig(config.getRootConfig(), null);
        for (String hostname : manager.getRollingConfigState().getRollingHostNames()) {
            if (hostname.equals("two")) {
                Assert.assertFalse(manager.isRolling());
                continue;
            }
            Assert.assertTrue(manager.isRolling());
            RollingReleaseState rollingState = new RollingReleaseState(state, manager.getCollection());
            Assert.assertEquals(rollingState.getCurrentRollingHostname(), hostname);
            Assert.assertNull(manager.getRollingConfigAdvanceAttempt());
            Mockito.when(mockExhibitor.getThisJVMHostname()).thenReturn(hostname);
            long lastModified = modified.get();
            manager.checkRollingConfig(state);
            if (// the next will be the down instance "two"
            hostname.equals("three")) {
                for (// don't check last time as it's cleared on MAX
                int i = 1; // don't check last time as it's cleared on MAX
                i < ConfigManager.DEFAULT_MAX_ATTEMPTS; // don't check last time as it's cleared on MAX
                ++i) {
                    Assert.assertNotNull(manager.getRollingConfigAdvanceAttempt());
                    Assert.assertEquals(manager.getRollingConfigAdvanceAttempt().getAttemptCount(), i);
                    manager.checkRollingConfig(state);
                }
            }
            Assert.assertTrue(modified.get() > lastModified);
        }
        Assert.assertFalse(manager.isRolling());
    } finally {
        CloseableUtils.closeQuietly(manager);
    }
}