dgarus commented on a change in pull request #6923: IGNITE-12214: Continuous query system view. URL: https://github.com/apache/ignite/pull/6923#discussion_r330950474
########## File path: modules/core/src/main/java/org/apache/ignite/spi/systemview/view/ContinuousQueryView.java ########## @@ -0,0 +1,213 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.apache.ignite.spi.systemview.view; + +import java.util.UUID; +import javax.cache.configuration.Factory; +import javax.cache.event.CacheEntryUpdatedListener; +import org.apache.ignite.IgniteCache; +import org.apache.ignite.IgniteCheckedException; +import org.apache.ignite.cache.CacheEntryEventSerializableFilter; +import org.apache.ignite.cache.query.ContinuousQuery; +import org.apache.ignite.cache.query.ContinuousQueryWithTransformer; +import org.apache.ignite.internal.managers.systemview.walker.Order; +import org.apache.ignite.internal.processors.cache.query.continuous.CacheContinuousQueryHandler; +import org.apache.ignite.internal.processors.continuous.GridContinuousHandler; +import org.apache.ignite.internal.processors.continuous.GridContinuousProcessor.RoutineInfo; + +import static org.apache.ignite.internal.util.IgniteUtils.toStringSafe; + +/** + * Continuous query representation for a {@link SystemView}. + */ +public class ContinuousQueryView { + /** Routine info. */ + private final RoutineInfo qry; + + /** Continuous query handler. */ + private final GridContinuousHandler hnd; + + /** Routine id. */ + private final UUID routineId; + + /** + * @param routineId Routine id. + * @param qry Query info. + */ + public ContinuousQueryView(UUID routineId, RoutineInfo qry) { + this.qry = qry; + this.hnd = qry.handler(); + this.routineId = routineId; + } + + /** @return Continuous query id. */ + public UUID routineId() { + return routineId; + } + + /** @return Node id. */ + public UUID nodeId() { + return qry.nodeId(); + } + + /** @return Cache name. */ + @Order + public String cacheName() { + return hnd.cacheName(); + } + + /** @return Topic for continuous query messages. */ + public String topic() { + return toStringSafe(hnd.orderedTopic()); + } + + /** @return Buffer size. */ + public int bufferSize() { + return qry.bufferSize(); + } + + /** @return Notify interval. */ + public long interval() { + return qry.interval(); + } + + /** @return Auto unsubscribe flag value. */ + public boolean autoUnsubscribe() { + return qry.autoUnsubscribe(); + } + + /** @return {@code True} if continuous query registered to receive events. */ + public boolean isEvents() { + return hnd.isEvents(); + } + + /** @return {@code True} if continuous query registered for messaging. */ + public boolean isMessaging() { + return hnd.isMessaging(); + } + + /** @return {@code True} if regular continuous query. */ + public boolean isQuery() { + return hnd.isQuery(); + } + + /** + * @return {@code True} if {@code keepBinary} mode enabled. + * @see IgniteCache#withKeepBinary() + */ + public boolean keepBinary() { + return hnd.keepBinary(); + } + + /** @return {@code True} if continuous query should receive notification for existing entries. */ + public boolean notifyExisting() { + CacheContinuousQueryHandler hnd0 = cacheHandler(); + + return hnd0 != null && hnd0.notifyExisting(); + } + + /** @return {@code True} if old value required for listener. */ + public boolean oldValueRequired() { + CacheContinuousQueryHandler hnd0 = cacheHandler(); + + return hnd0 != null && hnd0.oldValueRequired(); + } + + /** @return Last send time. */ + @Order(5) + public long lastSendTime() { + return qry.lastSendTime(); + } + + /** @return Delayed register flag. */ + public boolean delayedRegister() { + return qry.delayedRegister(); + } + + /** + * @return Class name of the local transformed listener. + * @see ContinuousQuery#setLocalListener(CacheEntryUpdatedListener) + */ + @Order(1) + public String localListener() { + CacheContinuousQueryHandler hnd0 = cacheHandler(); + + if (hnd0 == null || hnd0.localListener() == null) + return null; + + return toStringSafe(hnd0.localListener()); + } + + /** + * @return String representation of remote filter. 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