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Watcher: Fix check for currently executed watches (#31137) 

The ack watch action has a check for currently executed watches, to make
sure that currently running watches cannot be acknowledged. This check
only checked on the coordinating node for watches being executed, but should
have checked the whole cluster using a WatcherStatsRequest, which is
being switched to in this commit.
This commit is contained in:
Alexander Reelsen 2018-07-04 17:55:53 +02:00 committed by GitHub
parent 4328470dd8
commit 0a2ef59c41
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2 changed files with 85 additions and 61 deletions
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109
x-pack/plugin/watcher/src/main/java/org/elasticsearch/xpack/watcher/transport/actions/ack/TransportAckWatchAction.java
View File

@ -25,13 +25,13 @@ import org.elasticsearch.license.XPackLicenseState;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.transport.TransportService;
import org.elasticsearch.xpack.core.watcher.actions.ActionWrapper;
import org.elasticsearch.xpack.core.watcher.execution.WatchExecutionSnapshot;
import org.elasticsearch.xpack.core.watcher.transport.actions.ack.AckWatchAction;
import org.elasticsearch.xpack.core.watcher.transport.actions.ack.AckWatchRequest;
import org.elasticsearch.xpack.core.watcher.transport.actions.ack.AckWatchResponse;
import org.elasticsearch.xpack.core.watcher.transport.actions.stats.WatcherStatsAction;
import org.elasticsearch.xpack.core.watcher.transport.actions.stats.WatcherStatsRequest;
import org.elasticsearch.xpack.core.watcher.watch.Watch;
import org.elasticsearch.xpack.core.watcher.watch.WatchField;
import org.elasticsearch.xpack.watcher.execution.ExecutionService;
import org.elasticsearch.xpack.watcher.transport.actions.WatcherTransportAction;
import org.elasticsearch.xpack.watcher.watch.WatchParser;
import org.joda.time.DateTime;
@ -49,83 +49,86 @@ public class TransportAckWatchAction extends WatcherTransportAction<AckWatchRequ
private final Clock clock;
private final WatchParser parser;
private ExecutionService executionService;
private final Client client;
@Inject
public TransportAckWatchAction(Settings settings, TransportService transportService, ActionFilters actionFilters,
Clock clock, XPackLicenseState licenseState, WatchParser parser, ExecutionService executionService,
Clock clock, XPackLicenseState licenseState, WatchParser parser,
Client client) {
super(settings, AckWatchAction.NAME, transportService, actionFilters, licenseState, AckWatchRequest::new);
this.clock = clock;
this.parser = parser;
this.executionService = executionService;
this.client = client;
}
@Override
protected void doExecute(AckWatchRequest request, ActionListener<AckWatchResponse> listener) {
// if the watch to be acked is running currently, reject this request
List<WatchExecutionSnapshot> snapshots = executionService.currentExecutions();
boolean isWatchRunning = snapshots.stream().anyMatch(s -> s.watchId().equals(request.getWatchId()));
if (isWatchRunning) {
listener.onFailure(new ElasticsearchStatusException("watch[{}] is running currently, cannot ack until finished",
WatcherStatsRequest watcherStatsRequest = new WatcherStatsRequest();
watcherStatsRequest.includeCurrentWatches(true);
executeAsyncWithOrigin(client, WATCHER_ORIGIN, WatcherStatsAction.INSTANCE, watcherStatsRequest, ActionListener.wrap(response -> {
boolean isWatchRunning = response.getNodes().stream()
.anyMatch(node -> node.getSnapshots().stream().anyMatch(snapshot -> snapshot.watchId().equals(request.getWatchId())));
if (isWatchRunning) {
listener.onFailure(new ElasticsearchStatusException("watch[{}] is running currently, cannot ack until finished",
RestStatus.CONFLICT, request.getWatchId()));
return;
}
} else {
GetRequest getRequest = new GetRequest(Watch.INDEX, Watch.DOC_TYPE, request.getWatchId())
.preference(Preference.LOCAL.type()).realtime(true);
GetRequest getRequest = new GetRequest(Watch.INDEX, Watch.DOC_TYPE, request.getWatchId())
.preference(Preference.LOCAL.type()).realtime(true);
executeAsyncWithOrigin(client.threadPool().getThreadContext(), WATCHER_ORIGIN, getRequest,
ActionListener.<GetResponse>wrap((response) -> {
if (response.isExists() == false) {
listener.onFailure(new ResourceNotFoundException("Watch with id [{}] does not exist", request.getWatchId()));
} else {
DateTime now = new DateTime(clock.millis(), UTC);
Watch watch = parser.parseWithSecrets(request.getWatchId(), true, response.getSourceAsBytesRef(),
executeAsyncWithOrigin(client.threadPool().getThreadContext(), WATCHER_ORIGIN, getRequest,
ActionListener.<GetResponse>wrap(getResponse -> {
if (getResponse.isExists() == false) {
listener.onFailure(new ResourceNotFoundException("Watch with id [{}] does not exist", request.getWatchId()));
} else {
DateTime now = new DateTime(clock.millis(), UTC);
Watch watch = parser.parseWithSecrets(request.getWatchId(), true, getResponse.getSourceAsBytesRef(),
now, XContentType.JSON);
watch.version(response.getVersion());
watch.status().version(response.getVersion());
String[] actionIds = request.getActionIds();
if (actionIds == null || actionIds.length == 0) {
actionIds = new String[]{WatchField.ALL_ACTIONS_ID};
}
watch.version(getResponse.getVersion());
watch.status().version(getResponse.getVersion());
String[] actionIds = request.getActionIds();
if (actionIds == null || actionIds.length == 0) {
actionIds = new String[]{WatchField.ALL_ACTIONS_ID};
}
// exit early in case nothing changes
boolean isChanged = watch.ack(now, actionIds);
if (isChanged == false) {
listener.onResponse(new AckWatchResponse(watch.status()));
return;
}
// exit early in case nothing changes
boolean isChanged = watch.ack(now, actionIds);
if (isChanged == false) {
listener.onResponse(new AckWatchResponse(watch.status()));
return;
}
UpdateRequest updateRequest = new UpdateRequest(Watch.INDEX, Watch.DOC_TYPE, request.getWatchId());
// this may reject this action, but prevents concurrent updates from a watch execution
updateRequest.version(response.getVersion());
updateRequest.setRefreshPolicy(WriteRequest.RefreshPolicy.IMMEDIATE);
XContentBuilder builder = jsonBuilder();
builder.startObject()
UpdateRequest updateRequest = new UpdateRequest(Watch.INDEX, Watch.DOC_TYPE, request.getWatchId());
// this may reject this action, but prevents concurrent updates from a watch execution
updateRequest.version(getResponse.getVersion());
updateRequest.setRefreshPolicy(WriteRequest.RefreshPolicy.IMMEDIATE);
XContentBuilder builder = jsonBuilder();
builder.startObject()
.startObject(WatchField.STATUS.getPreferredName())
.startObject("actions");
List<String> actionIdsAsList = Arrays.asList(actionIds);
boolean updateAll = actionIdsAsList.contains("_all");
for (ActionWrapper actionWrapper : watch.actions()) {
if (updateAll || actionIdsAsList.contains(actionWrapper.id())) {
builder.startObject(actionWrapper.id())
List<String> actionIdsAsList = Arrays.asList(actionIds);
boolean updateAll = actionIdsAsList.contains("_all");
for (ActionWrapper actionWrapper : watch.actions()) {
if (updateAll || actionIdsAsList.contains(actionWrapper.id())) {
builder.startObject(actionWrapper.id())
.field("ack", watch.status().actionStatus(actionWrapper.id()).ackStatus(), ToXContent.EMPTY_PARAMS)
.endObject();
}
}
}
builder.endObject().endObject().endObject();
updateRequest.doc(builder);
builder.endObject().endObject().endObject();
updateRequest.doc(builder);
executeAsyncWithOrigin(client.threadPool().getThreadContext(), WATCHER_ORIGIN, updateRequest,
executeAsyncWithOrigin(client.threadPool().getThreadContext(), WATCHER_ORIGIN, updateRequest,
ActionListener.<UpdateResponse>wrap(
(updateResponse) -> listener.onResponse(new AckWatchResponse(watch.status())),
listener::onFailure), client::update);
}
}, listener::onFailure), client::get);
(updateResponse) -> listener.onResponse(new AckWatchResponse(watch.status())),
listener::onFailure), client::update);
}
}, listener::onFailure), client::get);
}
}, listener::onFailure));
}
}

37
x-pack/plugin/watcher/src/test/java/org/elasticsearch/xpack/watcher/transport/actions/ack/TransportAckWatchActionTests.java
View File

@ -6,11 +6,15 @@
package org.elasticsearch.xpack.watcher.transport.actions.ack;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.Version;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.support.ActionFilters;
import org.elasticsearch.action.support.ContextPreservingActionListener;
import org.elasticsearch.action.support.PlainActionFuture;
import org.elasticsearch.client.Client;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.bytes.BytesArray;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.util.concurrent.ThreadContext;
@ -20,11 +24,13 @@ import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.transport.TransportService;
import org.elasticsearch.xpack.core.watcher.WatcherMetaData;
import org.elasticsearch.xpack.core.watcher.execution.WatchExecutionSnapshot;
import org.elasticsearch.xpack.core.watcher.transport.actions.ack.AckWatchRequest;
import org.elasticsearch.xpack.core.watcher.transport.actions.ack.AckWatchResponse;
import org.elasticsearch.xpack.core.watcher.transport.actions.stats.WatcherStatsAction;
import org.elasticsearch.xpack.core.watcher.transport.actions.stats.WatcherStatsResponse;
import org.elasticsearch.xpack.core.watcher.watch.Watch;
import org.elasticsearch.xpack.watcher.execution.ExecutionService;
import org.elasticsearch.xpack.watcher.watch.WatchParser;
import org.junit.Before;
@ -34,6 +40,7 @@ import java.util.concurrent.ExecutionException;
import static org.hamcrest.Matchers.is;
import static org.mockito.Matchers.anyObject;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
@ -41,7 +48,6 @@ import static org.mockito.Mockito.when;
public class TransportAckWatchActionTests extends ESTestCase {
private TransportAckWatchAction action;
private ExecutionService executionService;
private Client client;
@Before
@ -51,11 +57,10 @@ public class TransportAckWatchActionTests extends ESTestCase {
ThreadContext threadContext = new ThreadContext(Settings.EMPTY);
when(threadPool.getThreadContext()).thenReturn(threadContext);
WatchParser watchParser = mock(WatchParser.class);
executionService = mock(ExecutionService.class);
client = mock(Client.class);
when(client.threadPool()).thenReturn(threadPool);
action = new TransportAckWatchAction(Settings.EMPTY, transportService, new ActionFilters(Collections.emptySet()),
Clock.systemUTC(), new XPackLicenseState(Settings.EMPTY), watchParser, executionService, client);
Clock.systemUTC(), new XPackLicenseState(Settings.EMPTY), watchParser, client);
}
public void testWatchNotFound() {
@ -67,6 +72,13 @@ public class TransportAckWatchActionTests extends ESTestCase {
return null;
}).when(client).get(anyObject(), anyObject());
doAnswer(invocation -> {
ContextPreservingActionListener listener = (ContextPreservingActionListener) invocation.getArguments()[2];
listener.onResponse(new WatcherStatsResponse(new ClusterName("clusterName"), new WatcherMetaData(false),
Collections.emptyList(), Collections.emptyList()));
return null;
}).when(client).execute(eq(WatcherStatsAction.INSTANCE), anyObject(), anyObject());
AckWatchRequest ackWatchRequest = new AckWatchRequest(watchId);
PlainActionFuture<AckWatchResponse> listener = PlainActionFuture.newFuture();
action.doExecute(ackWatchRequest, listener);
@ -78,9 +90,18 @@ public class TransportAckWatchActionTests extends ESTestCase {
public void testThatWatchCannotBeAckedWhileRunning() {
String watchId = "my_watch_id";
WatchExecutionSnapshot snapshot = mock(WatchExecutionSnapshot.class);
when(snapshot.watchId()).thenReturn(watchId);
when(executionService.currentExecutions()).thenReturn(Collections.singletonList(snapshot));
doAnswer(invocation -> {
ContextPreservingActionListener listener = (ContextPreservingActionListener) invocation.getArguments()[2];
DiscoveryNode discoveryNode = new DiscoveryNode("node_2", buildNewFakeTransportAddress(), Version.CURRENT);
WatcherStatsResponse.Node node = new WatcherStatsResponse.Node(discoveryNode);
WatchExecutionSnapshot snapshot = mock(WatchExecutionSnapshot.class);
when(snapshot.watchId()).thenReturn(watchId);
node.setSnapshots(Collections.singletonList(snapshot));
listener.onResponse(new WatcherStatsResponse(new ClusterName("clusterName"),
new WatcherMetaData(false), Collections.singletonList(node), Collections.emptyList()));
return null;
}).when(client).execute(eq(WatcherStatsAction.INSTANCE), anyObject(), anyObject());
AckWatchRequest ackWatchRequest = new AckWatchRequest(watchId);
PlainActionFuture<AckWatchResponse> listener = PlainActionFuture.newFuture();
@ -91,4 +112,4 @@ public class TransportAckWatchActionTests extends ESTestCase {
assertThat(e.getMessage(), is("watch[my_watch_id] is running currently, cannot ack until finished"));
assertThat(e.status(), is(RestStatus.CONFLICT));
}
}
}