Updates for SDN-IP:
* Use the new Leadership Service instead of Distributed Lock to
elect the SDN-IP Leader
* Reimplement the SDN-IP Intent Synchronizer. In the new implementation
the Point-to-Point Peer intents are also synchronized by and pushed
only by the Leader (same as the Multipoint-to-SinglePoint Route intents)
* Minor cleanups
Change-Id: I8e142781211a1d0f2d362875bc28fd05d843cd4b
diff --git a/apps/sdnip/src/main/java/org/onlab/onos/sdnip/IntentSynchronizer.java b/apps/sdnip/src/main/java/org/onlab/onos/sdnip/IntentSynchronizer.java
index 55a9d24..530e6d3 100644
--- a/apps/sdnip/src/main/java/org/onlab/onos/sdnip/IntentSynchronizer.java
+++ b/apps/sdnip/src/main/java/org/onlab/onos/sdnip/IntentSynchronizer.java
@@ -20,33 +20,37 @@
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
+import java.util.Objects;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Semaphore;
-import org.apache.commons.lang3.tuple.Pair;
import org.onlab.onos.core.ApplicationId;
import org.onlab.onos.net.flow.criteria.Criteria.IPCriterion;
import org.onlab.onos.net.flow.criteria.Criterion;
import org.onlab.onos.net.intent.Intent;
+import org.onlab.onos.net.intent.IntentOperations;
import org.onlab.onos.net.intent.IntentService;
import org.onlab.onos.net.intent.IntentState;
import org.onlab.onos.net.intent.MultiPointToSinglePointIntent;
+import org.onlab.onos.net.intent.PointToPointIntent;
import org.onlab.packet.Ip4Prefix;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import com.google.common.base.Objects;
import com.google.common.util.concurrent.ThreadFactoryBuilder;
+import static com.google.common.base.Preconditions.checkArgument;
+
public class IntentSynchronizer {
private static final Logger log =
LoggerFactory.getLogger(IntentSynchronizer.class);
private final ApplicationId appId;
private final IntentService intentService;
- private final Map<Ip4Prefix, MultiPointToSinglePointIntent> pushedRouteIntents;
+ private final Map<IntentKey, PointToPointIntent> peerIntents;
+ private final Map<Ip4Prefix, MultiPointToSinglePointIntent> routeIntents;
//
// State to deal with SDN-IP Leader election and pushing Intents
@@ -65,7 +69,8 @@
IntentSynchronizer(ApplicationId appId, IntentService intentService) {
this.appId = appId;
this.intentService = intentService;
- pushedRouteIntents = new ConcurrentHashMap<>();
+ peerIntents = new ConcurrentHashMap<>();
+ routeIntents = new ConcurrentHashMap<>();
bgpIntentsSynchronizerExecutor = Executors.newSingleThreadExecutor(
new ThreadFactoryBuilder()
@@ -88,28 +93,47 @@
* Stops the synchronizer.
*/
public void stop() {
- // Stop the thread(s)
- bgpIntentsSynchronizerExecutor.shutdownNow();
+ synchronized (this) {
+ // Stop the thread(s)
+ bgpIntentsSynchronizerExecutor.shutdownNow();
- //
- // Withdraw all SDN-IP intents
- //
- if (!isElectedLeader) {
- return; // Nothing to do: not the leader anymore
- }
- log.debug("Withdrawing all SDN-IP Route Intents...");
- for (Intent intent : intentService.getIntents()) {
- if (!(intent instanceof MultiPointToSinglePointIntent)
- || !intent.appId().equals(appId)) {
- continue;
+ //
+ // Withdraw all SDN-IP intents
+ //
+ if (!isElectedLeader) {
+ return; // Nothing to do: not the leader anymore
}
- intentService.withdraw(intent);
- }
- pushedRouteIntents.clear();
+ //
+ // Build a batch operation to withdraw all intents from this
+ // application.
+ //
+ log.debug("Withdrawing all SDN-IP Intents...");
+ IntentOperations.Builder builder = IntentOperations.builder();
+ for (Intent intent : intentService.getIntents()) {
+ // Skip the intents from other applications
+ if (!intent.appId().equals(appId)) {
+ continue;
+ }
+
+ // Skip the intents that are already withdrawn
+ IntentState intentState =
+ intentService.getIntentState(intent.id());
+ if (intentState.equals(IntentState.WITHDRAWING) ||
+ intentState.equals(IntentState.WITHDRAWN)) {
+ continue;
+ }
+
+ builder.addWithdrawOperation(intent.id());
+ }
+ intentService.execute(builder.build());
+ leaderChanged(false);
+
+ peerIntents.clear();
+ routeIntents.clear();
+ }
}
- //@Override TODO hook this up to something
public void leaderChanged(boolean isLeader) {
log.debug("Leader changed: {}", isLeader);
@@ -128,18 +152,18 @@
}
/**
- * Gets the pushed route intents.
+ * Gets the route intents.
*
- * @return the pushed route intents
+ * @return the route intents
*/
- public Collection<MultiPointToSinglePointIntent> getPushedRouteIntents() {
- List<MultiPointToSinglePointIntent> pushedIntents = new LinkedList<>();
+ public Collection<MultiPointToSinglePointIntent> getRouteIntents() {
+ List<MultiPointToSinglePointIntent> result = new LinkedList<>();
for (Map.Entry<Ip4Prefix, MultiPointToSinglePointIntent> entry :
- pushedRouteIntents.entrySet()) {
- pushedIntents.add(entry.getValue());
+ routeIntents.entrySet()) {
+ result.add(entry.getValue());
}
- return pushedIntents;
+ return result;
}
/**
@@ -158,11 +182,11 @@
intentsSynchronizerSemaphore.drainPermits();
} catch (InterruptedException e) {
log.debug("Interrupted while waiting to become " +
- "Intent Synchronization leader");
+ "Intent Synchronization leader");
interrupted = true;
break;
}
- syncIntents();
+ synchronizeIntents();
}
} finally {
if (interrupted) {
@@ -172,6 +196,29 @@
}
/**
+ * Submits a collection of point-to-point intents.
+ *
+ * @param intents the intents to submit
+ */
+ void submitPeerIntents(Collection<PointToPointIntent> intents) {
+ synchronized (this) {
+ // Store the intents in memory
+ for (PointToPointIntent intent : intents) {
+ peerIntents.put(new IntentKey(intent), intent);
+ }
+
+ // Push the intents
+ if (isElectedLeader && isActivatedLeader) {
+ log.debug("Submitting all SDN-IP Peer Intents...");
+ // TODO: We should use a single Intent batch operation
+ for (Intent intent : intents) {
+ intentService.submit(intent);
+ }
+ }
+ }
+ }
+
+ /**
* Submits a multi-point-to-single-point intent.
*
* @param prefix the IPv4 matching prefix for the intent to submit
@@ -180,14 +227,21 @@
void submitRouteIntent(Ip4Prefix prefix,
MultiPointToSinglePointIntent intent) {
synchronized (this) {
+ MultiPointToSinglePointIntent oldIntent =
+ routeIntents.put(prefix, intent);
+
if (isElectedLeader && isActivatedLeader) {
log.debug("Intent installation: adding Intent for prefix: {}",
prefix);
+ if (oldIntent != null) {
+ //
+ // TODO: Short-term solution to explicitly withdraw
+ // instead of using "replace" operation.
+ //
+ intentService.withdraw(oldIntent);
+ }
intentService.submit(intent);
}
-
- // Maintain the Intent
- pushedRouteIntents.put(prefix, intent);
}
}
@@ -199,11 +253,11 @@
void withdrawRouteIntent(Ip4Prefix prefix) {
synchronized (this) {
MultiPointToSinglePointIntent intent =
- pushedRouteIntents.remove(prefix);
+ routeIntents.remove(prefix);
if (intent == null) {
- log.debug("There is no intent in pushedRouteIntents to delete " +
- "for prefix: {}", prefix);
+ log.debug("There is no Intent in routeIntents to " +
+ "delete for prefix: {}", prefix);
return;
}
@@ -216,191 +270,312 @@
}
/**
- * Performs Intents Synchronization between the internally stored Route
- * Intents and the installed Route Intents.
+ * Synchronize the in-memory Intents with the Intents in the Intent
+ * framework.
*/
- private void syncIntents() {
+ void synchronizeIntents() {
synchronized (this) {
+
+ Map<IntentKey, Intent> localIntents = new HashMap<>();
+ Map<IntentKey, Intent> fetchedIntents = new HashMap<>();
+ Collection<Intent> storeInMemoryIntents = new LinkedList<>();
+ Collection<Intent> addIntents = new LinkedList<>();
+ Collection<Intent> deleteIntents = new LinkedList<>();
+
if (!isElectedLeader) {
return; // Nothing to do: not the leader anymore
}
- log.debug("Syncing SDN-IP Route Intents...");
+ log.debug("Syncing SDN-IP Intents...");
- Map<Ip4Prefix, MultiPointToSinglePointIntent> fetchedIntents =
- new HashMap<>();
+ // Prepare the local intents
+ for (Intent intent : routeIntents.values()) {
+ localIntents.put(new IntentKey(intent), intent);
+ }
+ for (Intent intent : peerIntents.values()) {
+ localIntents.put(new IntentKey(intent), intent);
+ }
- //
- // Fetch all intents, and classify the Multi-Point-to-Point Intents
- // based on the matching prefix.
- //
+ // Fetch all intents for this application
for (Intent intent : intentService.getIntents()) {
-
- if (!(intent instanceof MultiPointToSinglePointIntent)
- || !intent.appId().equals(appId)) {
+ if (!intent.appId().equals(appId)) {
continue;
}
- MultiPointToSinglePointIntent mp2pIntent =
- (MultiPointToSinglePointIntent) intent;
-
- Criterion c =
- mp2pIntent.selector().getCriterion(Criterion.Type.IPV4_DST);
- if (c != null && c instanceof IPCriterion) {
- IPCriterion ipCriterion = (IPCriterion) c;
- Ip4Prefix ip4Prefix = ipCriterion.ip().getIp4Prefix();
- if (ip4Prefix == null) {
- // TODO: For now we support only IPv4
- continue;
- }
- fetchedIntents.put(ip4Prefix, mp2pIntent);
- } else {
- log.warn("No IPV4_DST criterion found for intent {}",
- mp2pIntent.id());
- }
-
+ fetchedIntents.put(new IntentKey(intent), intent);
}
- //
- // Compare for each prefix the local IN-MEMORY Intents with the
- // FETCHED Intents:
- // - If the IN-MEMORY Intent is same as the FETCHED Intent, store
- // the FETCHED Intent in the local memory (i.e., override the
- // IN-MEMORY Intent) to preserve the original Intent ID
- // - if the IN-MEMORY Intent is not same as the FETCHED Intent,
- // delete the FETCHED Intent, and push/install the IN-MEMORY
- // Intent.
- // - If there is an IN-MEMORY Intent for a prefix, but no FETCHED
- // Intent for same prefix, then push/install the IN-MEMORY
- // Intent.
- // - If there is a FETCHED Intent for a prefix, but no IN-MEMORY
- // Intent for same prefix, then delete/withdraw the FETCHED
- // Intent.
- //
- Collection<Pair<Ip4Prefix, MultiPointToSinglePointIntent>>
- storeInMemoryIntents = new LinkedList<>();
- Collection<Pair<Ip4Prefix, MultiPointToSinglePointIntent>>
- addIntents = new LinkedList<>();
- Collection<Pair<Ip4Prefix, MultiPointToSinglePointIntent>>
- deleteIntents = new LinkedList<>();
- for (Map.Entry<Ip4Prefix, MultiPointToSinglePointIntent> entry :
- pushedRouteIntents.entrySet()) {
- Ip4Prefix prefix = entry.getKey();
- MultiPointToSinglePointIntent inMemoryIntent =
- entry.getValue();
- MultiPointToSinglePointIntent fetchedIntent =
- fetchedIntents.get(prefix);
-
- if (fetchedIntent == null) {
- //
- // No FETCHED Intent for same prefix: push the IN-MEMORY
- // Intent.
- //
- addIntents.add(Pair.of(prefix, inMemoryIntent));
- continue;
- }
-
- IntentState state = intentService.getIntentState(fetchedIntent.id());
- if (state == IntentState.WITHDRAWING ||
- state == IntentState.WITHDRAWN) {
- // The intent has been withdrawn but according to our route
- // table it should be installed. We'll reinstall it.
- addIntents.add(Pair.of(prefix, inMemoryIntent));
- }
-
- //
- // If IN-MEMORY Intent is same as the FETCHED Intent,
- // store the FETCHED Intent in the local memory.
- //
- if (compareMultiPointToSinglePointIntents(inMemoryIntent,
- fetchedIntent)) {
- storeInMemoryIntents.add(Pair.of(prefix, fetchedIntent));
- } else {
- //
- // The IN-MEMORY Intent is not same as the FETCHED Intent,
- // hence delete the FETCHED Intent, and install the
- // IN-MEMORY Intent.
- //
- deleteIntents.add(Pair.of(prefix, fetchedIntent));
- addIntents.add(Pair.of(prefix, inMemoryIntent));
- }
- fetchedIntents.remove(prefix);
- }
-
- //
- // Any remaining FETCHED Intents have to be deleted/withdrawn
- //
- for (Map.Entry<Ip4Prefix, MultiPointToSinglePointIntent> entry :
- fetchedIntents.entrySet()) {
- Ip4Prefix prefix = entry.getKey();
- MultiPointToSinglePointIntent fetchedIntent = entry.getValue();
- deleteIntents.add(Pair.of(prefix, fetchedIntent));
- }
+ computeIntentsDelta(localIntents, fetchedIntents,
+ storeInMemoryIntents, addIntents,
+ deleteIntents);
//
// Perform the actions:
// 1. Store in memory fetched intents that are same. Can be done
// even if we are not the leader anymore
- // 2. Delete intents: check if the leader before each operation
- // 3. Add intents: check if the leader before each operation
+ // 2. Delete intents: check if the leader before the operation
+ // 3. Add intents: check if the leader before the operation
//
- for (Pair<Ip4Prefix, MultiPointToSinglePointIntent> pair :
- storeInMemoryIntents) {
- Ip4Prefix prefix = pair.getLeft();
- MultiPointToSinglePointIntent intent = pair.getRight();
- log.debug("Intent synchronization: updating in-memory " +
- "Intent for prefix: {}", prefix);
- pushedRouteIntents.put(prefix, intent);
- }
- //
- isActivatedLeader = true; // Allow push of Intents
- for (Pair<Ip4Prefix, MultiPointToSinglePointIntent> pair :
- deleteIntents) {
- Ip4Prefix prefix = pair.getLeft();
- MultiPointToSinglePointIntent intent = pair.getRight();
- if (!isElectedLeader) {
- isActivatedLeader = false;
- return;
+ for (Intent intent : storeInMemoryIntents) {
+ // Store the intent in memory based on its type
+ if (intent instanceof MultiPointToSinglePointIntent) {
+ MultiPointToSinglePointIntent mp2pIntent =
+ (MultiPointToSinglePointIntent) intent;
+ // Find the IP prefix
+ Criterion c =
+ mp2pIntent.selector().getCriterion(Criterion.Type.IPV4_DST);
+ if (c != null && c instanceof IPCriterion) {
+ IPCriterion ipCriterion = (IPCriterion) c;
+ Ip4Prefix ip4Prefix = ipCriterion.ip().getIp4Prefix();
+ if (ip4Prefix == null) {
+ // TODO: For now we support only IPv4
+ continue;
+ }
+ log.debug("Intent synchronization: updating " +
+ "in-memory Route Intent for prefix {}",
+ ip4Prefix);
+ routeIntents.put(ip4Prefix, mp2pIntent);
+ } else {
+ log.warn("No IPV4_DST criterion found for Intent {}",
+ mp2pIntent.id());
+ }
+ continue;
}
- log.debug("Intent synchronization: deleting Intent for " +
- "prefix: {}", prefix);
- intentService.withdraw(intent);
- }
- //
- for (Pair<Ip4Prefix, MultiPointToSinglePointIntent> pair :
- addIntents) {
- Ip4Prefix prefix = pair.getLeft();
- MultiPointToSinglePointIntent intent = pair.getRight();
- if (!isElectedLeader) {
- isActivatedLeader = false;
- return;
+ if (intent instanceof PointToPointIntent) {
+ PointToPointIntent p2pIntent = (PointToPointIntent) intent;
+ log.debug("Intent synchronization: updating " +
+ "in-memory Peer Intent {}", p2pIntent);
+ peerIntents.put(new IntentKey(intent), p2pIntent);
+ continue;
}
- log.debug("Intent synchronization: adding Intent for " +
- "prefix: {}", prefix);
- intentService.submit(intent);
+ }
+
+ // Withdraw Intents
+ IntentOperations.Builder builder = IntentOperations.builder();
+ for (Intent intent : deleteIntents) {
+ builder.addWithdrawOperation(intent.id());
+ log.debug("Intent synchronization: deleting Intent {}",
+ intent);
}
if (!isElectedLeader) {
isActivatedLeader = false;
+ return;
+ }
+ intentService.execute(builder.build());
+
+ // Add Intents
+ builder = IntentOperations.builder();
+ for (Intent intent : addIntents) {
+ builder.addSubmitOperation(intent);
+ log.debug("Intent synchronization: adding Intent {}", intent);
+ }
+ if (!isElectedLeader) {
+ isActivatedLeader = false;
+ return;
+ }
+ intentService.execute(builder.build());
+
+ if (isElectedLeader) {
+ isActivatedLeader = true; // Allow push of Intents
+ } else {
+ isActivatedLeader = false;
}
log.debug("Syncing SDN-IP routes completed.");
}
}
/**
- * Compares two Multi-point to Single Point Intents whether they represent
- * same logical intention.
+ * Computes the delta in two sets of Intents: local in-memory Intents,
+ * and intents fetched from the Intent framework.
*
- * @param intent1 the first Intent to compare
- * @param intent2 the second Intent to compare
- * @return true if both Intents represent same logical intention, otherwise
- * false
+ * @param localIntents the local in-memory Intents
+ * @param fetchedIntents the Intents fetched from the Intent framework
+ * @param storeInMemoryIntents the Intents that should be stored in memory.
+ * Note: This Collection must be allocated by the caller, and it will
+ * be populated by this method.
+ * @param addIntents the Intents that should be added to the Intent
+ * framework. Note: This Collection must be allocated by the caller, and
+ * it will be populated by this method.
+ * @param deleteIntents the Intents that should be deleted from the Intent
+ * framework. Note: This Collection must be allocated by the caller, and
+ * it will be populated by this method.
*/
- private boolean compareMultiPointToSinglePointIntents(
- MultiPointToSinglePointIntent intent1,
- MultiPointToSinglePointIntent intent2) {
+ private void computeIntentsDelta(
+ final Map<IntentKey, Intent> localIntents,
+ final Map<IntentKey, Intent> fetchedIntents,
+ Collection<Intent> storeInMemoryIntents,
+ Collection<Intent> addIntents,
+ Collection<Intent> deleteIntents) {
- return Objects.equal(intent1.appId(), intent2.appId()) &&
- Objects.equal(intent1.selector(), intent2.selector()) &&
- Objects.equal(intent1.treatment(), intent2.treatment()) &&
- Objects.equal(intent1.ingressPoints(), intent2.ingressPoints()) &&
- Objects.equal(intent1.egressPoint(), intent2.egressPoint());
+ //
+ // Compute the deltas between the LOCAL in-memory Intents and the
+ // FETCHED Intents:
+ // - If an Intent is in both the LOCAL and FETCHED sets:
+ // If the FETCHED Intent is WITHDRAWING or WITHDRAWN, then
+ // the LOCAL Intent should be added/installed; otherwise the
+ // FETCHED intent should be stored in the local memory
+ // (i.e., override the LOCAL Intent) to preserve the original
+ // Intent ID.
+ // - if a LOCAL Intent is not in the FETCHED set, then the LOCAL
+ // Intent should be added/installed.
+ // - If a FETCHED Intent is not in the LOCAL set, then the FETCHED
+ // Intent should be deleted/withdrawn.
+ //
+ for (Map.Entry<IntentKey, Intent> entry : localIntents.entrySet()) {
+ IntentKey intentKey = entry.getKey();
+ Intent localIntent = entry.getValue();
+ Intent fetchedIntent = fetchedIntents.get(intentKey);
+
+ if (fetchedIntent == null) {
+ //
+ // No FETCHED Intent found: push the LOCAL Intent.
+ //
+ addIntents.add(localIntent);
+ continue;
+ }
+
+ IntentState state =
+ intentService.getIntentState(fetchedIntent.id());
+ if (state == IntentState.WITHDRAWING ||
+ state == IntentState.WITHDRAWN) {
+ // The intent has been withdrawn but according to our route
+ // table it should be installed. We'll reinstall it.
+ addIntents.add(localIntent);
+ continue;
+ }
+ storeInMemoryIntents.add(fetchedIntent);
+ }
+
+ for (Map.Entry<IntentKey, Intent> entry : fetchedIntents.entrySet()) {
+ IntentKey intentKey = entry.getKey();
+ Intent fetchedIntent = entry.getValue();
+ Intent localIntent = localIntents.get(intentKey);
+
+ if (localIntent != null) {
+ continue;
+ }
+
+ IntentState state =
+ intentService.getIntentState(fetchedIntent.id());
+ if (state == IntentState.WITHDRAWING ||
+ state == IntentState.WITHDRAWN) {
+ // Nothing to do. The intent has been already withdrawn.
+ continue;
+ }
+ //
+ // No LOCAL Intent found: delete/withdraw the FETCHED Intent.
+ //
+ deleteIntents.add(fetchedIntent);
+ }
+ }
+
+ /**
+ * Helper class that can be used to compute the key for an Intent by
+ * by excluding the Intent ID.
+ */
+ static final class IntentKey {
+ private final Intent intent;
+
+ /**
+ * Constructor.
+ *
+ * @param intent the intent to use
+ */
+ IntentKey(Intent intent) {
+ checkArgument((intent instanceof MultiPointToSinglePointIntent) ||
+ (intent instanceof PointToPointIntent),
+ "Intent type not recognized", intent);
+ this.intent = intent;
+ }
+
+ /**
+ * Compares two Multi-Point to Single-Point Intents whether they
+ * represent same logical intention.
+ *
+ * @param intent1 the first Intent to compare
+ * @param intent2 the second Intent to compare
+ * @return true if both Intents represent same logical intention,
+ * otherwise false
+ */
+ static boolean equalIntents(MultiPointToSinglePointIntent intent1,
+ MultiPointToSinglePointIntent intent2) {
+ return Objects.equals(intent1.appId(), intent2.appId()) &&
+ Objects.equals(intent1.selector(), intent2.selector()) &&
+ Objects.equals(intent1.treatment(), intent2.treatment()) &&
+ Objects.equals(intent1.ingressPoints(), intent2.ingressPoints()) &&
+ Objects.equals(intent1.egressPoint(), intent2.egressPoint());
+ }
+
+ /**
+ * Compares two Point-to-Point Intents whether they represent
+ * same logical intention.
+ *
+ * @param intent1 the first Intent to compare
+ * @param intent2 the second Intent to compare
+ * @return true if both Intents represent same logical intention,
+ * otherwise false
+ */
+ static boolean equalIntents(PointToPointIntent intent1,
+ PointToPointIntent intent2) {
+ return Objects.equals(intent1.appId(), intent2.appId()) &&
+ Objects.equals(intent1.selector(), intent2.selector()) &&
+ Objects.equals(intent1.treatment(), intent2.treatment()) &&
+ Objects.equals(intent1.ingressPoint(), intent2.ingressPoint()) &&
+ Objects.equals(intent1.egressPoint(), intent2.egressPoint());
+ }
+
+ @Override
+ public int hashCode() {
+ if (intent instanceof PointToPointIntent) {
+ PointToPointIntent p2pIntent = (PointToPointIntent) intent;
+ return Objects.hash(p2pIntent.appId(),
+ p2pIntent.resources(),
+ p2pIntent.selector(),
+ p2pIntent.treatment(),
+ p2pIntent.constraints(),
+ p2pIntent.ingressPoint(),
+ p2pIntent.egressPoint());
+ }
+ if (intent instanceof MultiPointToSinglePointIntent) {
+ MultiPointToSinglePointIntent m2pIntent =
+ (MultiPointToSinglePointIntent) intent;
+ return Objects.hash(m2pIntent.appId(),
+ m2pIntent.resources(),
+ m2pIntent.selector(),
+ m2pIntent.treatment(),
+ m2pIntent.constraints(),
+ m2pIntent.ingressPoints(),
+ m2pIntent.egressPoint());
+ }
+ checkArgument(false, "Intent type not recognized", intent);
+ return 0;
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if ((obj == null) || (!(obj instanceof IntentKey))) {
+ return false;
+ }
+ IntentKey other = (IntentKey) obj;
+
+ if (this.intent instanceof PointToPointIntent) {
+ if (!(other.intent instanceof PointToPointIntent)) {
+ return false;
+ }
+ return equalIntents((PointToPointIntent) this.intent,
+ (PointToPointIntent) other.intent);
+ }
+ if (this.intent instanceof MultiPointToSinglePointIntent) {
+ if (!(other.intent instanceof MultiPointToSinglePointIntent)) {
+ return false;
+ }
+ return equalIntents(
+ (MultiPointToSinglePointIntent) this.intent,
+ (MultiPointToSinglePointIntent) other.intent);
+ }
+ checkArgument(false, "Intent type not recognized", intent);
+ return false;
+ }
}
}