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 Map<String, List<StoredSnapshot>> snapshots = new ConcurrentHashMap<>();
+ private static final Map<String, CountDownLatch> snapshotSavedLatches = new ConcurrentHashMap<>();
+ private static final Map<String, CountDownLatch> snapshotDeletedLatches = new ConcurrentHashMap<>();
public static void addSnapshot(String persistentId, Object snapshot) {
List<StoredSnapshot> snapshotList = snapshots.get(persistentId);
synchronized (stored) {
retList = Lists.newArrayListWithCapacity(stored.size());
for(StoredSnapshot s: stored) {
- if(type.isInstance(s.getData())) {
- retList.add((T) s.getData());
+ if(type.isInstance(s.data)) {
+ retList.add((T) s.data);
}
}
}
snapshots.clear();
}
+ public static void addSnapshotSavedLatch(String persistenceId) {
+ snapshotSavedLatches.put(persistenceId, new CountDownLatch(1));
+ }
+
+ public static void addSnapshotDeletedLatch(String persistenceId) {
+ snapshotDeletedLatches.put(persistenceId, new CountDownLatch(1));
+ }
+
+ public static <T> T waitForSavedSnapshot(String persistenceId, Class<T> type) {
+ if(!Uninterruptibles.awaitUninterruptibly(snapshotSavedLatches.get(persistenceId), 5, TimeUnit.SECONDS)) {
+ throw new AssertionError("Snapshot was not saved");
+ }
+
+ return getSnapshots(persistenceId, type).get(0);
+ }
+
+ public static void waitForDeletedSnapshot(String persistenceId) {
+ if(!Uninterruptibles.awaitUninterruptibly(snapshotDeletedLatches.get(persistenceId), 5, TimeUnit.SECONDS)) {
+ throw new AssertionError("Snapshot was not deleted");
+ }
+ }
+
@Override
- public Future<Option<SelectedSnapshot>> doLoadAsync(String s,
- SnapshotSelectionCriteria snapshotSelectionCriteria) {
- List<StoredSnapshot> snapshotList = snapshots.get(s);
+ public Future<Optional<SelectedSnapshot>> doLoadAsync(String persistenceId,
+ SnapshotSelectionCriteria snapshotSelectionCriteria) {
+ List<StoredSnapshot> snapshotList = snapshots.get(persistenceId);
if(snapshotList == null){
- return Futures.successful(Option.<SelectedSnapshot>none());
+ return Futures.successful(Optional.<SelectedSnapshot>empty());
}
- StoredSnapshot snapshot = Iterables.getLast(snapshotList);
- SelectedSnapshot selectedSnapshot =
- new SelectedSnapshot(snapshot.getMetadata(), snapshot.getData());
- return Futures.successful(Option.some(selectedSnapshot));
+ synchronized(snapshotList) {
+ 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(Optional.<SelectedSnapshot>empty());
+ }
+
+ private static boolean matches(StoredSnapshot snapshot, SnapshotSelectionCriteria criteria) {
+ return snapshot.metadata.sequenceNr() <= criteria.maxSequenceNr() &&
+ snapshot.metadata.timestamp() <= criteria.maxTimestamp();
}
@Override
public Future<Void> doSaveAsync(SnapshotMetadata snapshotMetadata, Object o) {
List<StoredSnapshot> snapshotList = snapshots.get(snapshotMetadata.persistenceId());
+ LOG.trace("doSaveAsync: persistentId {}: sequenceNr: {}: timestamp {}: {}", snapshotMetadata.persistenceId(),
+ snapshotMetadata.sequenceNr(), snapshotMetadata.timestamp(), o);
+
if(snapshotList == null){
snapshotList = new ArrayList<>();
snapshots.put(snapshotMetadata.persistenceId(), snapshotList);
snapshotList.add(new StoredSnapshot(snapshotMetadata, o));
}
- return Futures.successful(null);
- }
+ CountDownLatch latch = snapshotSavedLatches.get(snapshotMetadata.persistenceId());
+ if(latch != null) {
+ latch.countDown();
+ }
- @Override
- public void onSaved(SnapshotMetadata snapshotMetadata) throws Exception {
+ return Futures.successful(null);
}
@Override
- public void doDelete(SnapshotMetadata snapshotMetadata) throws Exception {
- List<StoredSnapshot> snapshotList = snapshots.get(snapshotMetadata.persistenceId());
-
- if(snapshotList == null){
- return;
- }
-
- int deleteIndex = -1;
-
- synchronized (snapshotList) {
- for(int i=0;i<snapshotList.size(); i++){
- StoredSnapshot snapshot = snapshotList.get(i);
- if(snapshotMetadata.equals(snapshot.getMetadata())){
- deleteIndex = i;
- break;
+ public Future<Void> doDeleteAsync(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;
+ }
}
}
-
- if(deleteIndex != -1){
- snapshotList.remove(deleteIndex);
- }
}
+
+ return Futures.successful(null);
}
@Override
- public void doDelete(String persistentId, SnapshotSelectionCriteria snapshotSelectionCriteria)
- throws Exception {
- List<StoredSnapshot> snapshotList = snapshots.get(persistentId);
-
- if(snapshotList == null){
- return;
- }
-
- 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();
+ public Future<Void> doDeleteAsync(String persistenceId, 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 s = iter.next();
+ if(matches(s, criteria)) {
+ LOG.trace("Deleting snapshot for sequenceNr: {}, timestamp: {}: {}",
+ s.metadata.sequenceNr(), s.metadata.timestamp(), s.data);
+
+ iter.remove();
+ }
}
}
}
+
+ CountDownLatch latch = snapshotDeletedLatches.get(persistenceId);
+ if(latch != null) {
+ latch.countDown();
+ }
+
+ return Futures.successful(null);
}
private static class StoredSnapshot {
this.metadata = metadata;
this.data = data;
}
-
- public SnapshotMetadata getMetadata() {
- return metadata;
- }
-
- public Object getData() {
- return data;
- }
}
}
Code Review / controller.git / blobdiff