X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?p=controller.git;a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-rest-connector%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fsal%2Fstreams%2Flisteners%2FNotificator.java;h=17565a6b8c082d314f5b4e90715be18ca3536a8c;hp=75e22ed88e63fd4043db211eb3d64d27cda82fb7;hb=eb887b1c2c8cd2768f8b4c2ed2b5054f97798466;hpb=1ee71ae58a03de1c1f8fd8c789e7921508ba9f59 diff --git a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/streams/listeners/Notificator.java b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/streams/listeners/Notificator.java index 75e22ed88e..17565a6b8c 100644 --- a/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/streams/listeners/Notificator.java +++ b/opendaylight/md-sal/sal-rest-connector/src/main/java/org/opendaylight/controller/sal/streams/listeners/Notificator.java @@ -12,20 +12,19 @@ import java.util.Set; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; - -import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier; +import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier; /** - * {@link Notificator} is responsible to create, remove and find {@link ListenerAdapter} listener. + * {@link Notificator} is responsible to create, remove and find + * {@link ListenerAdapter} listener. */ public class Notificator { private static Map listenersByStreamName = new ConcurrentHashMap<>(); - private static Map listenersByInstanceIdentifier = new ConcurrentHashMap<>(); - private static final Lock lock = new ReentrantLock(); + private static final Lock lock = new ReentrantLock(); - private Notificator() { - } + private Notificator() { + } /** * Returns list of all stream names @@ -34,153 +33,118 @@ public class Notificator { return listenersByStreamName.keySet(); } + /** + * Gets {@link ListenerAdapter} specified by stream name. + * + * @param streamName + * The name of the stream. + * @return {@link ListenerAdapter} specified by stream name. + */ + public static ListenerAdapter getListenerFor(String streamName) { + return listenersByStreamName.get(streamName); + } - /** - * Gets {@link ListenerAdapter} specified by stream name. - * - * @param streamName - * The name of the stream. - * @return {@link ListenerAdapter} specified by stream name. - */ - public static ListenerAdapter getListenerFor(String streamName) { - return listenersByStreamName.get(streamName); - } - - /** - * Gets {@link ListenerAdapter} listener specified by - * {@link InstanceIdentifier} path. - * - * @param path - * Path to data in data repository. - * @return ListenerAdapter - */ - public static ListenerAdapter getListenerFor(InstanceIdentifier path) { - return listenersByInstanceIdentifier.get(path); - } - - /** - * Checks if the listener specified by {@link InstanceIdentifier} path - * exist. - * - * @param path - * Path to data in data repository. - * @return True if the listener exist, false otherwise. - */ - public static boolean existListenerFor(InstanceIdentifier path) { - return listenersByInstanceIdentifier.containsKey(path); - } - - /** - * Creates new {@link ListenerAdapter} listener from - * {@link InstanceIdentifier} path and stream name. - * - * @param path - * Path to data in data repository. - * @param streamName - * The name of the stream. - * @return New {@link ListenerAdapter} listener from - * {@link InstanceIdentifier} path and stream name. - */ - public static ListenerAdapter createListener(InstanceIdentifier path, - String streamName) { - ListenerAdapter listener = new ListenerAdapter(path, streamName); - try { - lock.lock(); - listenersByInstanceIdentifier.put(path, listener); - listenersByStreamName.put(streamName, listener); - } finally { - lock.unlock(); - } - return listener; - } + /** + * Checks if the listener specified by {@link YangInstanceIdentifier} path exist. + * + * @param streamName + * @return True if the listener exist, false otherwise. + */ + public static boolean existListenerFor(String streamName) { + return listenersByStreamName.containsKey(streamName); + } - /** - * Looks for listener determined by {@link InstanceIdentifier} path and - * removes it. - * - * @param path - * InstanceIdentifier - */ - public static void removeListener(InstanceIdentifier path) { - ListenerAdapter listener = listenersByInstanceIdentifier.get(path); - deleteListener(listener); - } + /** + * Creates new {@link ListenerAdapter} listener from {@link YangInstanceIdentifier} path and stream name. + * + * @param path + * Path to data in data repository. + * @param streamName + * The name of the stream. + * @return New {@link ListenerAdapter} listener from {@link YangInstanceIdentifier} path and stream name. + */ + public static ListenerAdapter createListener(YangInstanceIdentifier path, String streamName) { + ListenerAdapter listener = new ListenerAdapter(path, streamName); + try { + lock.lock(); + listenersByStreamName.put(streamName, listener); + } finally { + lock.unlock(); + } + return listener; + } - /** - * Creates String representation of stream name from URI. Removes slash from - * URI in start and end position. - * - * @param uri - * URI for creation stream name. - * @return String representation of stream name. - */ - public static String createStreamNameFromUri(String uri) { - if (uri == null) { - return null; - } - String result = uri; - if (result.startsWith("/")) { - result = result.substring(1); - } - if (result.endsWith("/")) { - result = result.substring(0, result.length()); - } - return result; - } + /** + * Looks for listener determined by {@link YangInstanceIdentifier} path and removes it. + * Creates String representation of stream name from URI. Removes slash from URI in start and end position. + * + * @param uri + * URI for creation stream name. + * @return String representation of stream name. + */ + public static String createStreamNameFromUri(String uri) { + if (uri == null) { + return null; + } + String result = uri; + if (result.startsWith("/")) { + result = result.substring(1); + } + if (result.endsWith("/")) { + result = result.substring(0, result.length()-1); + } + return result; + } - /** - * Removes all listeners. - */ - public static void removeAllListeners() { - for (ListenerAdapter listener : listenersByInstanceIdentifier.values()) { - try { - listener.close(); - } catch (Exception e) { - } - } - try { - lock.lock(); - listenersByStreamName = new ConcurrentHashMap<>(); - listenersByInstanceIdentifier = new ConcurrentHashMap<>(); - } finally { - lock.unlock(); - } - } + /** + * Removes all listeners. + */ + public static void removeAllListeners() { + for (ListenerAdapter listener : listenersByStreamName.values()) { + try { + listener.close(); + } catch (Exception e) { + } + } + try { + lock.lock(); + listenersByStreamName = new ConcurrentHashMap<>(); + } finally { + lock.unlock(); + } + } - /** - * Checks if listener has at least one subscriber. In case it doesn't have any, delete - * listener. - * - * @param listener - * ListenerAdapter - */ - public static void removeListenerIfNoSubscriberExists( - ListenerAdapter listener) { - if (!listener.hasSubscribers()) { - deleteListener(listener); - } - } + /** + * Checks if listener has at least one subscriber. In case it doesn't have any, delete listener. + * + * @param listener + * ListenerAdapter + */ + public static void removeListenerIfNoSubscriberExists(ListenerAdapter listener) { + if (!listener.hasSubscribers()) { + deleteListener(listener); + } + } - /** - * Delete {@link ListenerAdapter} listener specified in parameter. - * - * @param listener - * ListenerAdapter - */ - private static void deleteListener(ListenerAdapter listener) { - if (listener != null) { - try { - listener.close(); - } catch (Exception e) { - } - try { - lock.lock(); - listenersByInstanceIdentifier.remove(listener.getPath()); - listenersByStreamName.remove(listener.getStreamName()); - } finally { - lock.unlock(); - } - } - } + /** + * Delete {@link ListenerAdapter} listener specified in parameter. + * + * @param listener + * ListenerAdapter + */ + private static void deleteListener(ListenerAdapter listener) { + if (listener != null) { + try { + listener.close(); + } catch (Exception e) { + } + try { + lock.lock(); + listenersByStreamName.remove(listener.getStreamName()); + } finally { + lock.unlock(); + } + } + } }