* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
-
package org.opendaylight.controller.cluster.raft.utils;
import akka.dispatch.Futures;
-import akka.japi.Option;
import akka.persistence.SelectedSnapshot;
import akka.persistence.SnapshotMetadata;
import akka.persistence.SnapshotSelectionCriteria;
import akka.persistence.snapshot.japi.SnapshotStore;
-import com.google.common.collect.Iterables;
-import com.google.common.collect.Lists;
+import com.google.common.util.concurrent.Uninterruptibles;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
+import java.util.Optional;
import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import scala.concurrent.Future;
static final Logger LOG = LoggerFactory.getLogger(InMemorySnapshotStore.class);
+ private static final Map<String, CountDownLatch> SNAPSHOT_SAVED_LATCHES = new ConcurrentHashMap<>();
+ private static final Map<String, CountDownLatch> SNAPSHOT_DELETED_LATCHES = new ConcurrentHashMap<>();
private static Map<String, List<StoredSnapshot>> snapshots = new ConcurrentHashMap<>();
- public static void addSnapshot(String persistentId, Object snapshot) {
- List<StoredSnapshot> snapshotList = snapshots.get(persistentId);
-
- if(snapshotList == null) {
- snapshotList = new ArrayList<>();
- snapshots.put(persistentId, snapshotList);
- }
+ public static void addSnapshot(final String persistentId, final Object snapshot) {
+ List<StoredSnapshot> snapshotList = snapshots.computeIfAbsent(persistentId, k -> new ArrayList<>());
synchronized (snapshotList) {
snapshotList.add(new StoredSnapshot(new SnapshotMetadata(persistentId, snapshotList.size(),
}
@SuppressWarnings("unchecked")
- public static <T> List<T> getSnapshots(String persistentId, Class<T> type) {
+ public static <T> List<T> getSnapshots(final String persistentId, final Class<T> type) {
List<StoredSnapshot> stored = snapshots.get(persistentId);
- if(stored == null) {
+ if (stored == null) {
return Collections.emptyList();
}
List<T> retList;
synchronized (stored) {
- retList = Lists.newArrayListWithCapacity(stored.size());
- for(StoredSnapshot s: stored) {
- if(type.isInstance(s.getData())) {
- retList.add((T) s.getData());
+ retList = new ArrayList<>(stored.size());
+ for (StoredSnapshot s: stored) {
+ if (type.isInstance(s.data)) {
+ retList.add((T) s.data);
}
}
}
return retList;
}
+ public static void clearSnapshotsFor(final String persistenceId) {
+ snapshots.remove(persistenceId);
+ }
+
public static void clear() {
snapshots.clear();
}
- @Override
- public Future<Option<SelectedSnapshot>> doLoadAsync(String s,
- SnapshotSelectionCriteria snapshotSelectionCriteria) {
- List<StoredSnapshot> snapshotList = snapshots.get(s);
- if(snapshotList == null){
- return Futures.successful(Option.<SelectedSnapshot>none());
+ public static void addSnapshotSavedLatch(final String persistenceId) {
+ SNAPSHOT_SAVED_LATCHES.put(persistenceId, new CountDownLatch(1));
+ }
+
+ public static void addSnapshotDeletedLatch(final String persistenceId) {
+ SNAPSHOT_DELETED_LATCHES.put(persistenceId, new CountDownLatch(1));
+ }
+
+ public static <T> T waitForSavedSnapshot(final String persistenceId, final Class<T> type) {
+ if (!Uninterruptibles.awaitUninterruptibly(SNAPSHOT_SAVED_LATCHES.get(persistenceId), 5, TimeUnit.SECONDS)) {
+ throw new AssertionError("Snapshot was not saved");
}
- StoredSnapshot snapshot = Iterables.getLast(snapshotList);
- SelectedSnapshot selectedSnapshot =
- new SelectedSnapshot(snapshot.getMetadata(), snapshot.getData());
- return Futures.successful(Option.some(selectedSnapshot));
+ return getSnapshots(persistenceId, type).get(0);
}
- @Override
- public Future<Void> doSaveAsync(SnapshotMetadata snapshotMetadata, Object o) {
- List<StoredSnapshot> snapshotList = snapshots.get(snapshotMetadata.persistenceId());
+ public static void waitForDeletedSnapshot(final String persistenceId) {
+ if (!Uninterruptibles.awaitUninterruptibly(SNAPSHOT_DELETED_LATCHES.get(persistenceId), 5, TimeUnit.SECONDS)) {
+ throw new AssertionError("Snapshot was not deleted");
+ }
+ }
- if(snapshotList == null){
- snapshotList = new ArrayList<>();
- snapshots.put(snapshotMetadata.persistenceId(), snapshotList);
+ @Override
+ public Future<Optional<SelectedSnapshot>> doLoadAsync(final String persistenceId,
+ final SnapshotSelectionCriteria snapshotSelectionCriteria) {
+ List<StoredSnapshot> snapshotList = snapshots.get(persistenceId);
+ if (snapshotList == null) {
+ return Futures.successful(Optional.<SelectedSnapshot>empty());
}
+
synchronized (snapshotList) {
- snapshotList.add(new StoredSnapshot(snapshotMetadata, o));
+ for (int i = snapshotList.size() - 1; i >= 0; i--) {
+ StoredSnapshot snapshot = snapshotList.get(i);
+ if (matches(snapshot, snapshotSelectionCriteria)) {
+ return Futures.successful(Optional.of(new SelectedSnapshot(snapshot.metadata,
+ snapshot.data)));
+ }
+ }
}
- return Futures.successful(null);
+ return Futures.successful(Optional.<SelectedSnapshot>empty());
}
- @Override
- public void onSaved(SnapshotMetadata snapshotMetadata) throws Exception {
+ private static boolean matches(final StoredSnapshot snapshot, final SnapshotSelectionCriteria criteria) {
+ return snapshot.metadata.sequenceNr() <= criteria.maxSequenceNr()
+ && snapshot.metadata.timestamp() <= criteria.maxTimestamp();
}
@Override
- public void doDelete(SnapshotMetadata snapshotMetadata) throws Exception {
+ public Future<Void> doSaveAsync(final SnapshotMetadata snapshotMetadata, final Object obj) {
List<StoredSnapshot> snapshotList = snapshots.get(snapshotMetadata.persistenceId());
- if(snapshotList == null){
- return;
- }
-
- int deleteIndex = -1;
+ LOG.trace("doSaveAsync: persistentId {}: sequenceNr: {}: timestamp {}: {}", snapshotMetadata.persistenceId(),
+ snapshotMetadata.sequenceNr(), snapshotMetadata.timestamp(), obj);
+ if (snapshotList == null) {
+ snapshotList = new ArrayList<>();
+ snapshots.put(snapshotMetadata.persistenceId(), snapshotList);
+ }
synchronized (snapshotList) {
- for(int i=0;i<snapshotList.size(); i++){
- StoredSnapshot snapshot = snapshotList.get(i);
- if(snapshotMetadata.equals(snapshot.getMetadata())){
- deleteIndex = i;
- break;
- }
- }
+ snapshotList.add(new StoredSnapshot(snapshotMetadata, obj));
+ }
- if(deleteIndex != -1){
- snapshotList.remove(deleteIndex);
- }
+ CountDownLatch latch = SNAPSHOT_SAVED_LATCHES.get(snapshotMetadata.persistenceId());
+ if (latch != null) {
+ latch.countDown();
}
+
+ return Futures.successful(null);
}
@Override
- public void doDelete(String persistentId, SnapshotSelectionCriteria snapshotSelectionCriteria)
- throws Exception {
- List<StoredSnapshot> snapshotList = snapshots.get(persistentId);
-
- if(snapshotList == null){
- return;
+ public Future<Void> doDeleteAsync(final SnapshotMetadata metadata) {
+ List<StoredSnapshot> snapshotList = snapshots.get(metadata.persistenceId());
+
+ if (snapshotList != null) {
+ synchronized (snapshotList) {
+ for (int i = 0; i < snapshotList.size(); i++) {
+ StoredSnapshot snapshot = snapshotList.get(i);
+ if (metadata.equals(snapshot.metadata)) {
+ snapshotList.remove(i);
+ break;
+ }
+ }
+ }
}
- synchronized (snapshotList) {
- Iterator<StoredSnapshot> iter = snapshotList.iterator();
- while(iter.hasNext()) {
- StoredSnapshot s = iter.next();
- LOG.trace("doDelete: sequenceNr: {}, maxSequenceNr: {}", s.getMetadata().sequenceNr(),
- snapshotSelectionCriteria.maxSequenceNr());
-
- if(s.getMetadata().sequenceNr() <= snapshotSelectionCriteria.maxSequenceNr()) {
- iter.remove();
+ return Futures.successful(null);
+ }
+
+ @Override
+ public Future<Void> doDeleteAsync(final String persistenceId, final SnapshotSelectionCriteria criteria) {
+ LOG.trace("doDelete: persistentId {}: maxSequenceNr: {}: maxTimestamp {}", persistenceId,
+ criteria.maxSequenceNr(), criteria.maxTimestamp());
+
+ List<StoredSnapshot> snapshotList = snapshots.get(persistenceId);
+ if (snapshotList != null) {
+ synchronized (snapshotList) {
+ Iterator<StoredSnapshot> iter = snapshotList.iterator();
+ while (iter.hasNext()) {
+ StoredSnapshot stored = iter.next();
+ if (matches(stored, criteria)) {
+ LOG.trace("Deleting snapshot for sequenceNr: {}, timestamp: {}: {}",
+ stored.metadata.sequenceNr(), stored.metadata.timestamp(), stored.data);
+
+ iter.remove();
+ }
}
}
}
+
+ CountDownLatch latch = SNAPSHOT_DELETED_LATCHES.get(persistenceId);
+ if (latch != null) {
+ latch.countDown();
+ }
+
+ return Futures.successful(null);
}
- private static class StoredSnapshot {
+ private static final class StoredSnapshot {
private final SnapshotMetadata metadata;
private final Object data;
- private StoredSnapshot(SnapshotMetadata metadata, Object data) {
+ StoredSnapshot(final SnapshotMetadata metadata, final Object data) {
this.metadata = metadata;
this.data = data;
}
-
- public SnapshotMetadata getMetadata() {
- return metadata;
- }
-
- public Object getData() {
- return data;
- }
}
}
Code Review / controller.git / blobdiff