[ONOS-3116] FlowClassifier Manager.

Change-Id: I9122f3add8aff2ce780a9da23d279bae345cdf1c

+/*
+ * 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.vtnrsc.flowClassifier.impl;
+
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.ConcurrentMap;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Service;
+import org.onosproject.vtnrsc.FlowClassifierId;
+import org.onosproject.vtnrsc.FlowClassifier;
+import org.onosproject.vtnrsc.flowClassifier.FlowClassifierService;
+
+import org.slf4j.Logger;
+import static org.slf4j.LoggerFactory.getLogger;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+import com.google.common.collect.ImmutableList;
+
+/**
+ * Provides implementation of the Flow Classifier Service.
+ */
+@Component(immediate = true)
+@Service
+public class FlowClassifierManager implements FlowClassifierService {
+
+    private final Logger log = getLogger(FlowClassifierManager.class);
+
+    private static final String FLOW_CLASSIFIER_NOT_NULL = "Flow Classifier cannot be null";
+    private static final String FLOW_CLASSIFIER_ID_NOT_NULL = "Flow Classifier Id cannot be null";
+
+    private ConcurrentMap<FlowClassifierId, FlowClassifier> flowClassifierStore
+    = new ConcurrentHashMap<FlowClassifierId, FlowClassifier>();
+
+    @Activate
+    private void activate() {
+        log.info("Flow Classifier service activated");
+    }
+
+    @Deactivate
+    private void deactivate() {
+        log.info("Flow Classifier service deactivated");
+    }
+
+    @Override
+    public boolean createFlowClassifier(FlowClassifier flowClassifier) {
+        log.debug("createFlowClassifier");
+        checkNotNull(flowClassifier, FLOW_CLASSIFIER_NOT_NULL);
+        FlowClassifierId id = flowClassifier.flowClassifierId();
+
+        flowClassifierStore.put(id, flowClassifier);
+        if (!flowClassifierStore.containsKey(id)) {
+            log.debug("Flow Classifier creation is failed whose identifier is {}.", id.toString());
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    public Iterable<FlowClassifier> getFlowClassifiers() {
+        return ImmutableList.copyOf(flowClassifierStore.values());
+    }
+
+    @Override
+    public boolean hasFlowClassifier(FlowClassifierId id) {
+        checkNotNull(id, FLOW_CLASSIFIER_ID_NOT_NULL);
+        return flowClassifierStore.containsKey(id);
+    }
+
+    @Override
+    public FlowClassifier getFlowClassifier(FlowClassifierId id) {
+        checkNotNull(id, FLOW_CLASSIFIER_ID_NOT_NULL);
+        return flowClassifierStore.get(id);
+    }
+
+    @Override
+    public boolean updateFlowClassifier(FlowClassifier flowClassifier) {
+        checkNotNull(flowClassifier, FLOW_CLASSIFIER_NOT_NULL);
+        FlowClassifierId id = flowClassifier.flowClassifierId();
+        return flowClassifierStore.replace(id, flowClassifierStore.get(id), flowClassifier);
+    }
+
+    @Override
+    public boolean removeFlowClassifier(FlowClassifierId id) {
+        checkNotNull(id, FLOW_CLASSIFIER_ID_NOT_NULL);
+        flowClassifierStore.remove(id);
+        if (flowClassifierStore.containsKey(id)) {
+            log.debug("The Flow Classifier removal is failed whose identifier is {}", id.toString());
+            return false;
+        }
+        return true;
+    }
+}
\ No newline at end of file

+/*
+ * 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.
+ */
+
+/**
+ * Provides implementation of the flow Classifier service.
+ */
+package org.onosproject.vtnrsc.flowClassifier.impl;