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Do not execute blocking calls on the cluster state update thread 

This commit stops the index audit trail from executing blocking calls on the cluster
state update thread. Blocking calls were executed when indexing to a remote cluster
to get that cluster's state and also possibly put a template and mappings.

Closes elastic/elasticsearch#3989

Original commit: elastic/x-pack-elasticsearch@fc42efc639
This commit is contained in:
Jay Modi 2016-11-14 12:52:29 -05:00 committed by GitHub
parent b82be3de81 2ab7e52c79
commit 64288e9f37
3 changed files with 109 additions and 73 deletions
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175
elasticsearch/src/main/java/org/elasticsearch/xpack/security/audit/index/IndexAuditTrail.java
View File

@ -9,12 +9,9 @@ import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.message.ParameterizedMessage; import org.apache.logging.log4j.message.ParameterizedMessage;
import org.apache.logging.log4j.util.Supplier; import org.apache.logging.log4j.util.Supplier;
import org.elasticsearch.ElasticsearchException; import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.admin.cluster.state.ClusterStateResponse; import org.elasticsearch.action.admin.cluster.state.ClusterStateResponse;
import org.elasticsearch.action.admin.indices.exists.indices.IndicesExistsRequest;
import org.elasticsearch.action.admin.indices.mapping.put.PutMappingRequest;
import org.elasticsearch.action.admin.indices.mapping.put.PutMappingResponse;
import org.elasticsearch.action.admin.indices.template.put.PutIndexTemplateRequest; import org.elasticsearch.action.admin.indices.template.put.PutIndexTemplateRequest;
import org.elasticsearch.action.admin.indices.template.put.PutIndexTemplateResponse;
import org.elasticsearch.action.bulk.BulkProcessor; import org.elasticsearch.action.bulk.BulkProcessor;
import org.elasticsearch.action.bulk.BulkRequest; import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse; import org.elasticsearch.action.bulk.BulkResponse;
@ -38,7 +35,6 @@ import org.elasticsearch.common.settings.Setting.Property;
import org.elasticsearch.common.settings.Settings; import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.TransportAddress; import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.common.unit.TimeValue; import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.util.concurrent.AbstractRunnable;
import org.elasticsearch.common.util.concurrent.EsExecutors; import org.elasticsearch.common.util.concurrent.EsExecutors;
import org.elasticsearch.common.util.concurrent.ThreadContext; import org.elasticsearch.common.util.concurrent.ThreadContext;
import org.elasticsearch.common.xcontent.XContentBuilder; import org.elasticsearch.common.xcontent.XContentBuilder;
@ -80,9 +76,8 @@ import java.util.Set;
import java.util.concurrent.BlockingQueue; import java.util.concurrent.BlockingQueue;
import java.util.concurrent.LinkedBlockingQueue; import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit; import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference; import java.util.concurrent.atomic.AtomicReference;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import java.util.function.Function; import java.util.function.Function;
import static org.elasticsearch.xpack.security.Security.setting; import static org.elasticsearch.xpack.security.Security.setting;
@ -165,7 +160,7 @@ public class IndexAuditTrail extends AbstractComponent implements AuditTrail, Cl
private final BlockingQueue<Message> eventQueue; private final BlockingQueue<Message> eventQueue;
private final QueueConsumer queueConsumer; private final QueueConsumer queueConsumer;
private final ThreadPool threadPool; private final ThreadPool threadPool;
private final Lock putMappingLock = new ReentrantLock(); private final AtomicBoolean putTemplatePending = new AtomicBoolean(false);
private final ClusterService clusterService; private final ClusterService clusterService;
private final boolean indexToRemoteCluster; private final boolean indexToRemoteCluster;
private final EnumSet<AuditLevel> events; private final EnumSet<AuditLevel> events;
@ -225,8 +220,10 @@ public class IndexAuditTrail extends AbstractComponent implements AuditTrail, Cl
*/ */
public synchronized boolean canStart(ClusterChangedEvent event, boolean master) { public synchronized boolean canStart(ClusterChangedEvent event, boolean master) {
if (indexToRemoteCluster) { if (indexToRemoteCluster) {
ClusterStateResponse response = client.admin().cluster().prepareState().execute().actionGet(); // just return true as we do not determine whether we can start or not based on the local cluster state, but must base it off
return canStart(response.getState(), master); // of the remote cluster state and this method is called on the cluster state update thread, so we do not really want to
// execute remote calls on this thread
return true;
} }
return canStart(event.state(), master); return canStart(event.state(), master);
} }
@ -271,17 +268,49 @@ public class IndexAuditTrail extends AbstractComponent implements AuditTrail, Cl
if (state.compareAndSet(State.INITIALIZED, State.STARTING)) { if (state.compareAndSet(State.INITIALIZED, State.STARTING)) {
this.nodeHostName = clusterService.localNode().getHostName(); this.nodeHostName = clusterService.localNode().getHostName();
this.nodeHostAddress = clusterService.localNode().getHostAddress(); this.nodeHostAddress = clusterService.localNode().getHostAddress();
if (indexToRemoteCluster) {
client.admin().cluster().prepareState().execute(new ActionListener<ClusterStateResponse>() {
@Override
public void onResponse(ClusterStateResponse clusterStateResponse) {
final boolean currentMaster = clusterService.state().getNodes().isLocalNodeElectedMaster();
if (canStart(clusterStateResponse.getState(), currentMaster)) {
if (currentMaster) {
putTemplate(customAuditIndexSettings(settings), ActionListener.wrap((v) -> innerStart(),
(e) -> state.set(State.FAILED)));
} else {
innerStart();
}
} else {
if (state.compareAndSet(State.STARTING, State.INITIALIZED) == false) {
throw new IllegalStateException("state transition from starting to initialized failed, current value: " +
state.get());
}
}
}
if (master) { @Override
putTemplate(customAuditIndexSettings(settings)); public void onFailure(Exception e) {
logger.error("failed to get remote cluster state", e);
}
});
} else if (master) {
putTemplate(customAuditIndexSettings(settings), ActionListener.wrap((v) -> innerStart(),
(e) -> state.set(State.FAILED)));
} else {
innerStart();
} }
this.clusterService.add(this);
initializeBulkProcessor();
queueConsumer.start();
state.set(State.STARTED);
} }
} }
private void innerStart() {
if (indexToRemoteCluster == false) {
this.clusterService.add(this);
}
initializeBulkProcessor();
queueConsumer.start();
state.set(State.STARTED);
}
public synchronized void stop() { public synchronized void stop() {
if (state.compareAndSet(State.STARTED, State.STOPPING)) { if (state.compareAndSet(State.STARTED, State.STOPPING)) {
queueConsumer.interrupt(); queueConsumer.interrupt();
@ -798,12 +827,12 @@ public class IndexAuditTrail extends AbstractComponent implements AuditTrail, Cl
return builder.build(); return builder.build();
} }
void putTemplate(Settings customSettings) { void putTemplate(Settings customSettings, ActionListener<Void> listener) {
try (InputStream is = getClass().getResourceAsStream("/" + INDEX_TEMPLATE_NAME + ".json")) { try (InputStream is = getClass().getResourceAsStream("/" + INDEX_TEMPLATE_NAME + ".json")) {
ByteArrayOutputStream out = new ByteArrayOutputStream(); ByteArrayOutputStream out = new ByteArrayOutputStream();
Streams.copy(is, out); Streams.copy(is, out);
final byte[] template = out.toByteArray(); final byte[] template = out.toByteArray();
PutIndexTemplateRequest request = new PutIndexTemplateRequest(INDEX_TEMPLATE_NAME).source(template); final PutIndexTemplateRequest request = new PutIndexTemplateRequest(INDEX_TEMPLATE_NAME).source(template);
if (customSettings != null && customSettings.names().size() > 0) { if (customSettings != null && customSettings.names().size() > 0) {
Settings updatedSettings = Settings.builder() Settings updatedSettings = Settings.builder()
.put(request.settings()) .put(request.settings())
@ -812,40 +841,55 @@ public class IndexAuditTrail extends AbstractComponent implements AuditTrail, Cl
request.settings(updatedSettings); request.settings(updatedSettings);
} }
assert !Thread.currentThread().isInterrupted() : "current thread has been interrupted before putting index template!!!"; client.admin().indices().putTemplate(request, ActionListener.wrap((response) -> {
if (response.isAcknowledged()) {
PutIndexTemplateResponse response = client.admin().indices().putTemplate(request).actionGet(); // now we may need to update the mappings of the current index
if (!response.isAcknowledged()) { final DateTime dateTime;
throw new IllegalStateException("failed to put index template for audit logging"); final Message message = eventQueue.peek();
} if (message != null) {
dateTime = message.timestamp;
// now we may need to update the mappings of the current index } else {
DateTime dateTime; dateTime = DateTime.now(DateTimeZone.UTC);
Message message = eventQueue.peek(); }
if (message != null) { final String index = resolve(INDEX_NAME_PREFIX, dateTime, rollover);
dateTime = message.timestamp; checkIfCurrentIndexExists(index, request, listener);
} else { } else {
dateTime = DateTime.now(DateTimeZone.UTC); listener.onFailure(new IllegalStateException("failed to put index template for audit logging"));
} }
String index = resolve(INDEX_NAME_PREFIX, dateTime, rollover); }, listener::onFailure));
IndicesExistsRequest existsRequest = new IndicesExistsRequest(index);
if (client.admin().indices().exists(existsRequest).get().isExists()) {
logger.debug("index [{}] exists so we need to update mappings", index);
PutMappingRequest putMappingRequest = new PutMappingRequest(index).type(DOC_TYPE).source(request.mappings().get(DOC_TYPE));
PutMappingResponse putMappingResponse = client.admin().indices().putMapping(putMappingRequest).get();
if (!putMappingResponse.isAcknowledged()) {
throw new IllegalStateException("failed to put mappings for audit logging index [" + index + "]");
}
} else {
logger.debug("index [{}] does not exist so we do not need to update mappings", index);
}
} catch (Exception e) { } catch (Exception e) {
logger.debug("unexpected exception while putting index template", e); logger.debug("unexpected exception while putting index template", e);
throw new IllegalStateException("failed to load [" + INDEX_TEMPLATE_NAME + ".json]", e); listener.onFailure(e);
} }
} }
private void checkIfCurrentIndexExists(String index, PutIndexTemplateRequest indexTemplateRequest, ActionListener<Void> listener) {
client.admin().indices().prepareExists(index).execute(ActionListener.wrap((response) -> {
if (response.isExists()) {
logger.debug("index [{}] exists so we need to update mappings", index);
putAuditIndexMappings(index, indexTemplateRequest, listener);
} else {
logger.debug("index [{}] does not exist so we do not need to update mappings", index);
listener.onResponse(null);
}
}, listener::onFailure));
}
private void putAuditIndexMappings(String index, PutIndexTemplateRequest request, ActionListener<Void> listener) {
client.admin().indices().preparePutMapping(index)
.setType(DOC_TYPE)
.setSource(request.mappings()
.get(DOC_TYPE))
.execute(ActionListener.wrap((response) -> {
if (response.isAcknowledged()) {
listener.onResponse(null);
} else {
listener.onFailure(new IllegalStateException("failed to put mappings for audit logging index [" + index + "]"));
}
},
listener::onFailure));
}
BlockingQueue<Message> createQueue(int maxQueueSize) { BlockingQueue<Message> createQueue(int maxQueueSize) {
return new LinkedBlockingQueue<>(maxQueueSize); return new LinkedBlockingQueue<>(maxQueueSize);
} }
@ -882,36 +926,25 @@ public class IndexAuditTrail extends AbstractComponent implements AuditTrail, Cl
// this could be handled by a template registry service but adding that is extra complexity until we actually need it // this could be handled by a template registry service but adding that is extra complexity until we actually need it
@Override @Override
public void clusterChanged(ClusterChangedEvent clusterChangedEvent) { public void clusterChanged(ClusterChangedEvent clusterChangedEvent) {
State state = state(); assert indexToRemoteCluster == false;
if (state != State.STARTED || indexToRemoteCluster) { if (state() == State.STARTED
return; && clusterChangedEvent.localNodeMaster()
} && clusterChangedEvent.state().metaData().templates().get(INDEX_TEMPLATE_NAME) == null
&& putTemplatePending.compareAndSet(false, true)) {
if (clusterChangedEvent.localNodeMaster() == false) {
return;
}
if (clusterChangedEvent.state().metaData().templates().get(INDEX_TEMPLATE_NAME) == null) {
logger.debug("security audit index template [{}] does not exist. it may have been deleted - putting the template", logger.debug("security audit index template [{}] does not exist. it may have been deleted - putting the template",
INDEX_TEMPLATE_NAME); INDEX_TEMPLATE_NAME);
threadPool.generic().execute(new AbstractRunnable() {
putTemplate(customAuditIndexSettings(settings), new ActionListener<Void>() {
@Override @Override
public void onFailure(Exception e) { public void onResponse(Void aVoid) {
logger.error((Supplier<?>) () -> new ParameterizedMessage( putTemplatePending.set(false);
"failed to update security audit index template [{}]", INDEX_TEMPLATE_NAME), e);
} }
@Override @Override
protected void doRun() throws Exception { public void onFailure(Exception e) {
final boolean locked = putMappingLock.tryLock(); putTemplatePending.set(false);
if (locked) { logger.error((Supplier<?>) () -> new ParameterizedMessage(
try { "failed to update security audit index template [{}]", INDEX_TEMPLATE_NAME), e);
putTemplate(customAuditIndexSettings(settings));
} finally {
putMappingLock.unlock();
}
} else {
logger.trace("unable to PUT security audit index template as the lock is already held");
}
} }
}); });
} }

3
elasticsearch/src/test/java/org/elasticsearch/xpack/security/audit/index/IndexAuditTrailMutedTests.java
View File

@ -296,8 +296,9 @@ public class IndexAuditTrailMutedTests extends ESTestCase {
Settings settings = IndexAuditTrailTests.levelSettings(null, excludes); Settings settings = IndexAuditTrailTests.levelSettings(null, excludes);
auditTrail = new IndexAuditTrail(settings, client, threadPool, clusterService) { auditTrail = new IndexAuditTrail(settings, client, threadPool, clusterService) {
@Override @Override
void putTemplate(Settings settings) { void putTemplate(Settings settings, ActionListener<Void> listener) {
// make this a no-op so we don't have to stub out unnecessary client activities // make this a no-op so we don't have to stub out unnecessary client activities
listener.onResponse(null);
} }
@Override @Override

4
elasticsearch/src/test/java/org/elasticsearch/xpack/security/audit/index/IndexAuditTrailUpdateMappingTests.java
View File

@ -16,6 +16,7 @@ import org.elasticsearch.test.SecurityIntegTestCase;
import org.elasticsearch.test.rest.FakeRestRequest; import org.elasticsearch.test.rest.FakeRestRequest;
import org.elasticsearch.threadpool.TestThreadPool; import org.elasticsearch.threadpool.TestThreadPool;
import org.elasticsearch.threadpool.ThreadPool; import org.elasticsearch.threadpool.ThreadPool;
import org.elasticsearch.xpack.security.audit.index.IndexAuditTrail.State;
import org.junit.After; import org.junit.After;
import static org.elasticsearch.xpack.security.audit.index.IndexNameResolver.Rollover.DAILY; import static org.elasticsearch.xpack.security.audit.index.IndexNameResolver.Rollover.DAILY;
@ -62,13 +63,14 @@ public class IndexAuditTrailUpdateMappingTests extends SecurityIntegTestCase {
// default mapping // default mapping
GetMappingsResponse response = client().admin().indices().prepareGetMappings(indexName).get(); GetMappingsResponse response = client().admin().indices().prepareGetMappings(indexName).get();
assertThat(response.mappings().get(indexName).get(IndexAuditTrail.DOC_TYPE), nullValue());
// start the audit trail which should update the mappings since it is the master // start the audit trail which should update the mappings since it is the master
auditor.start(true); auditor.start(true);
assertTrue(awaitBusy(() -> auditor.state() == State.STARTED));
// get the updated mappings // get the updated mappings
GetMappingsResponse updated = client().admin().indices().prepareGetMappings(indexName).get(); GetMappingsResponse updated = client().admin().indices().prepareGetMappings(indexName).get();
assertThat(response.mappings().get(indexName).get(IndexAuditTrail.DOC_TYPE), nullValue());
assertThat(updated.mappings().get(indexName).get(IndexAuditTrail.DOC_TYPE), notNullValue()); assertThat(updated.mappings().get(indexName).get(IndexAuditTrail.DOC_TYPE), notNullValue());
} }