1 files changed, 288 insertions, 0 deletions
diff --git a/framework/src/onos/core/net/src/main/java/org/onosproject/net/config/impl/NetworkConfigManager.java b/framework/src/onos/core/net/src/main/java/org/onosproject/net/config/impl/NetworkConfigManager.java
new file mode 100644
index 00000000..5cd96cab
--- /dev/null
+++ b/framework/src/onos/core/net/src/main/java/org/onosproject/net/config/impl/NetworkConfigManager.java
@@ -0,0 +1,288 @@
+/*
+ * 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.config.impl;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Maps;
+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.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.apache.felix.scr.annotations.Service;
+import org.onosproject.event.AbstractListenerManager;
+import org.onosproject.net.config.Config;
+import org.onosproject.net.config.ConfigFactory;
+import org.onosproject.net.config.NetworkConfigEvent;
+import org.onosproject.net.config.NetworkConfigListener;
+import org.onosproject.net.config.NetworkConfigRegistry;
+import org.onosproject.net.config.NetworkConfigService;
+import org.onosproject.net.config.NetworkConfigStore;
+import org.onosproject.net.config.NetworkConfigStoreDelegate;
+import org.onosproject.net.config.SubjectFactory;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Implementation of the network configuration subsystem.
+ */
+@Component(immediate = true)
+@Service
+public class NetworkConfigManager
+        extends AbstractListenerManager<NetworkConfigEvent, NetworkConfigListener>
+        implements NetworkConfigRegistry, NetworkConfigService {
+
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    private static final String NULL_FACTORY_MSG = "Factory cannot be null";
+    private static final String NULL_SCLASS_MSG = "Subject class cannot be null";
+    private static final String NULL_CCLASS_MSG = "Config class cannot be null";
+    private static final String NULL_SUBJECT_MSG = "Subject cannot be null";
+
+    // Inventory of configuration factories
+    private final Map<ConfigKey, ConfigFactory> factories = Maps.newConcurrentMap();
+
+    // Secondary indices to retrieve subject and config classes by keys
+    private final Map<String, SubjectFactory> subjectClasses = Maps.newConcurrentMap();
+    private final Map<Class, SubjectFactory> subjectClassKeys = Maps.newConcurrentMap();
+    private final Map<ConfigIdentifier, Class<? extends Config>> configClasses = Maps.newConcurrentMap();
+
+    private final NetworkConfigStoreDelegate storeDelegate = new InternalStoreDelegate();
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected NetworkConfigStore store;
+
+
+    @Activate
+    public void activate() {
+        eventDispatcher.addSink(NetworkConfigEvent.class, listenerRegistry);
+        store.setDelegate(storeDelegate);
+        log.info("Started");
+    }
+
+    @Deactivate
+    public void deactivate() {
+        eventDispatcher.removeSink(NetworkConfigEvent.class);
+        store.unsetDelegate(storeDelegate);
+        log.info("Stopped");
+    }
+
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public void registerConfigFactory(ConfigFactory configFactory) {
+        checkNotNull(configFactory, NULL_FACTORY_MSG);
+        factories.put(key(configFactory), configFactory);
+        configClasses.put(identifier(configFactory), configFactory.configClass());
+
+        SubjectFactory subjectFactory = configFactory.subjectFactory();
+        subjectClasses.putIfAbsent(subjectFactory.subjectKey(), subjectFactory);
+        subjectClassKeys.putIfAbsent(subjectFactory.subjectClass(), subjectFactory);
+
+        store.addConfigFactory(configFactory);
+    }
+
+    @Override
+    public void unregisterConfigFactory(ConfigFactory configFactory) {
+        checkNotNull(configFactory, NULL_FACTORY_MSG);
+        factories.remove(key(configFactory));
+        configClasses.remove(identifier(configFactory));
+
+        // Note that we are deliberately not removing subject factory key bindings.
+        store.removeConfigFactory(configFactory);
+    }
+
+    @Override
+    public Set<ConfigFactory> getConfigFactories() {
+        return ImmutableSet.copyOf(factories.values());
+    }
+
+
+    @Override
+    @SuppressWarnings("unchecked")
+    public <S, C extends Config<S>> Set<ConfigFactory<S, C>> getConfigFactories(Class<S> subjectClass) {
+        ImmutableSet.Builder<ConfigFactory<S, C>> builder = ImmutableSet.builder();
+        factories.forEach((key, factory) -> {
+            if (factory.subjectFactory().subjectClass().equals(subjectClass)) {
+                builder.add(factory);
+            }
+        });
+        return builder.build();
+    }
+
+    @Override
+    public <S, C extends Config<S>> ConfigFactory<S, C> getConfigFactory(Class<C> configClass) {
+        checkNotNull(configClass, NULL_CCLASS_MSG);
+        return store.getConfigFactory(configClass);
+    }
+
+
+    @Override
+    public Set<Class> getSubjectClasses() {
+        ImmutableSet.Builder<Class> builder = ImmutableSet.builder();
+        factories.forEach((k, v) -> builder.add(k.subjectClass));
+        return builder.build();
+    }
+
+    @Override
+    public SubjectFactory getSubjectFactory(String subjectKey) {
+        return subjectClasses.get(subjectKey);
+    }
+
+    @Override
+    public SubjectFactory getSubjectFactory(Class subjectClass) {
+        return subjectClassKeys.get(subjectClass);
+    }
+
+    @Override
+    public Class<? extends Config> getConfigClass(String subjectKey, String configKey) {
+        return configClasses.get(new ConfigIdentifier(subjectKey, configKey));
+    }
+
+    @Override
+    public <S> Set<S> getSubjects(Class<S> subjectClass) {
+        checkNotNull(subjectClass, NULL_SCLASS_MSG);
+        return store.getSubjects(subjectClass);
+    }
+
+    @Override
+    public <S, C extends Config<S>> Set<S> getSubjects(Class<S> subjectClass, Class<C> configClass) {
+        checkNotNull(subjectClass, NULL_SCLASS_MSG);
+        checkNotNull(configClass, NULL_CCLASS_MSG);
+        return store.getSubjects(subjectClass, configClass);
+    }
+
+    @Override
+    public <S> Set<Config<S>> getConfigs(S subject) {
+        checkNotNull(subject, NULL_SUBJECT_MSG);
+        Set<Class<? extends Config<S>>> configClasses = store.getConfigClasses(subject);
+        ImmutableSet.Builder<Config<S>> cfg = ImmutableSet.builder();
+        configClasses.forEach(cc -> cfg.add(store.getConfig(subject, cc)));
+        return cfg.build();
+    }
+
+    @Override
+    public <S, T extends Config<S>> T getConfig(S subject, Class<T> configClass) {
+        checkNotNull(subject, NULL_SUBJECT_MSG);
+        checkNotNull(configClass, NULL_CCLASS_MSG);
+        return store.getConfig(subject, configClass);
+    }
+
+
+    @Override
+    public <S, C extends Config<S>> C addConfig(S subject, Class<C> configClass) {
+        checkNotNull(subject, NULL_SUBJECT_MSG);
+        checkNotNull(configClass, NULL_CCLASS_MSG);
+        return store.createConfig(subject, configClass);
+    }
+
+    @Override
+    public <S, C extends Config<S>> C applyConfig(S subject, Class<C> configClass, JsonNode json) {
+        checkNotNull(subject, NULL_SUBJECT_MSG);
+        checkNotNull(configClass, NULL_CCLASS_MSG);
+        return store.applyConfig(subject, configClass, json);
+    }
+
+    @Override
+    public <S, C extends Config<S>> void removeConfig(S subject, Class<C> configClass) {
+        checkNotNull(subject, NULL_SUBJECT_MSG);
+        checkNotNull(configClass, NULL_CCLASS_MSG);
+        store.clearConfig(subject, configClass);
+    }
+
+    // Auxiliary store delegate to receive notification about changes in
+    // the network configuration store state - by the store itself.
+    private class InternalStoreDelegate implements NetworkConfigStoreDelegate {
+        @Override
+        public void notify(NetworkConfigEvent event) {
+            post(event);
+        }
+    }
+
+
+    // Produces a key for uniquely tracking a config factory.
+    private static ConfigKey key(ConfigFactory factory) {
+        return new ConfigKey(factory.subjectFactory().subjectClass(), factory.configClass());
+    }
+
+    // Auxiliary key to track config factories.
+    protected static final class ConfigKey {
+        final Class subjectClass;
+        final Class configClass;
+
+        protected ConfigKey(Class subjectClass, Class configClass) {
+            this.subjectClass = subjectClass;
+            this.configClass = configClass;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(subjectClass, configClass);
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) {
+                return true;
+            }
+            if (obj instanceof ConfigKey) {
+                final ConfigKey other = (ConfigKey) obj;
+                return Objects.equals(this.subjectClass, other.subjectClass)
+                        && Objects.equals(this.configClass, other.configClass);
+            }
+            return false;
+        }
+    }
+
+    private static ConfigIdentifier identifier(ConfigFactory factory) {
+        return new ConfigIdentifier(factory.subjectFactory().subjectKey(), factory.configKey());
+    }
+
+    static final class ConfigIdentifier {
+        final String subjectKey;
+        final String configKey;
+
+        protected ConfigIdentifier(String subjectKey, String configKey) {
+            this.subjectKey = subjectKey;
+            this.configKey = configKey;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(subjectKey, configKey);
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (this == obj) {
+                return true;
+            }
+            if (obj instanceof ConfigIdentifier) {
+                final ConfigIdentifier other = (ConfigIdentifier) obj;
+                return Objects.equals(this.subjectKey, other.subjectKey)
+                        && Objects.equals(this.configKey, other.configKey);
+            }
+            return false;
+        }
+    }
+}