1 files changed, 70 insertions, 0 deletions
diff --git a/framework/src/onos/core/net/src/main/java/org/onosproject/net/intent/impl/phase/WithdrawRequest.java b/framework/src/onos/core/net/src/main/java/org/onosproject/net/intent/impl/phase/WithdrawRequest.java
new file mode 100644
index 00000000..8a0709e6
--- /dev/null
+++ b/framework/src/onos/core/net/src/main/java/org/onosproject/net/intent/impl/phase/WithdrawRequest.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.net.intent.impl.phase;
+
+import org.onosproject.net.intent.IntentData;
+import org.onosproject.net.intent.impl.IntentProcessor;
+
+import java.util.Optional;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import static org.onosproject.net.intent.impl.phase.IntentProcessPhase.transferErrorCount;
+
+/**
+ * Represents a phase of requesting a withdraw of an intent.
+ */
+final class WithdrawRequest implements IntentProcessPhase {
+
+    private final IntentProcessor processor;
+    private final IntentData data;
+    private final Optional<IntentData> stored;
+
+    /**
+     * Creates a withdraw request phase.
+     *
+     * @param processor  intent processor to be passed to intent process phases
+     *                   generated after this phase
+     * @param intentData intent data to be processed
+     * @param stored     intent data stored in the store
+     */
+    WithdrawRequest(IntentProcessor processor, IntentData intentData, Optional<IntentData> stored) {
+        this.processor = checkNotNull(processor);
+        this.data = checkNotNull(intentData);
+        this.stored = checkNotNull(stored);
+    }
+
+    @Override
+    public Optional<IntentProcessPhase> execute() {
+        //TODO perhaps we want to validate that the pending and current are the
+        // same version i.e. they are the same
+        // Note: this call is not just the symmetric version of submit
+
+        transferErrorCount(data, stored);
+
+        if (!stored.isPresent() || stored.get().installables().isEmpty()) {
+            switch (data.request()) {
+                case INSTALL_REQ:
+                    return Optional.of(new Failed(data));
+                case WITHDRAW_REQ:
+                default: //TODO "default" case should not happen
+                    return Optional.of(new Withdrawn(data));
+            }
+        }
+
+        data.setInstallables(stored.get().installables());
+        return Optional.of(new Withdrawing(processor, data));
+    }
+}