[ONOS-6163] (vnet) revise intent service for vnets
Revise intent service for virtual networks.
Change-Id: I4955cde2296e58d8f0e356d19483e84f51193318
diff --git a/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/intent/phase/VirtualIntentPurgeRequest.java b/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/intent/phase/VirtualIntentPurgeRequest.java
new file mode 100644
index 0000000..a6f29ea
--- /dev/null
+++ b/incubator/net/src/main/java/org/onosproject/incubator/net/virtual/impl/intent/phase/VirtualIntentPurgeRequest.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.incubator.net.virtual.impl.intent.phase;
+
+import org.onosproject.net.intent.IntentData;
+import org.onosproject.net.intent.IntentState;
+import org.slf4j.Logger;
+
+import java.util.Optional;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Represents a phase of requesting a purge of an intent for a virtual network.
+ * Note: The purge will only succeed if the intent is FAILED or WITHDRAWN.
+ */
+final class VirtualIntentPurgeRequest extends VirtualFinalIntentProcessPhase {
+ private static final Logger log = getLogger(VirtualIntentPurgeRequest.class);
+
+ private final IntentData data;
+ protected final Optional<IntentData> stored;
+
+ VirtualIntentPurgeRequest(IntentData intentData, Optional<IntentData> stored) {
+ this.data = checkNotNull(intentData);
+ this.stored = checkNotNull(stored);
+ }
+
+ private boolean shouldAcceptPurge() {
+ if (!stored.isPresent()) {
+ log.info("Purge for intent {}, but intent is not present",
+ data.key());
+ return true;
+ }
+
+ IntentData storedData = stored.get();
+ if (storedData.state() == IntentState.WITHDRAWN
+ || storedData.state() == IntentState.FAILED) {
+ return true;
+ }
+ log.info("Purge for intent {} is rejected because intent state is {}",
+ data.key(), storedData.state());
+ return false;
+ }
+
+ @Override
+ public IntentData data() {
+ if (shouldAcceptPurge()) {
+ return data;
+ } else {
+ return stored.get();
+ }
+ }
+}