    001    /*
    002     * Licensed to the Apache Software Foundation (ASF) under one or more
    003     * contributor license agreements. See the NOTICE file distributed with
    004     * this work for additional information regarding copyright ownership.
    005     * The ASF licenses this file to You under the Apache license, Version 2.0
    006     * (the "License"); you may not use this file except in compliance with
    007     * the License. You may obtain a copy of the License at
    008     *
    009     *      http://www.apache.org/licenses/LICENSE-2.0
    010     *
    011     * Unless required by applicable law or agreed to in writing, software
    012     * distributed under the License is distributed on an "AS IS" BASIS,
    013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014     * See the license for the specific language governing permissions and
    015     * limitations under the license.
    016     */
    017    package org.apache.logging.log4j.core.appender.rolling;
    018
    019    import org.apache.logging.log4j.core.LogEvent;
    020    import org.apache.logging.log4j.core.config.plugins.Plugin;
    021    import org.apache.logging.log4j.core.config.plugins.PluginElement;
    022    import org.apache.logging.log4j.core.config.plugins.PluginFactory;
    023
    024    /**
    025     * Triggering policy that wraps other policies.
    026     */
    027    @Plugin(name = "Policies", category = "Core", printObject = true)
    028    public final class CompositeTriggeringPolicy implements TriggeringPolicy {
    029
    030        private final TriggeringPolicy[] policies;
    031
    032        private CompositeTriggeringPolicy(final TriggeringPolicy... policies) {
    033            this.policies = policies;
    034        }
    035
    036        /**
    037         * Initializes the policy.
    038         * @param manager The RollingFileManager.
    039         */
    040        @Override
    041        public void initialize(final RollingFileManager manager) {
    042            for (final TriggeringPolicy policy : policies) {
    043                policy.initialize(manager);
    044            }
    045        }
    046
    047        /**
    048         * Determines if a rollover should occur.
    049         * @param event A reference to the currently event.
    050         * @return true if a rollover should occur, false otherwise.
    051         */
    052        @Override
    053        public boolean isTriggeringEvent(final LogEvent event) {
    054            for (final TriggeringPolicy policy : policies) {
    055                if (policy.isTriggeringEvent(event)) {
    056                    return true;
    057                }
    058            }
    059            return false;
    060        }
    061
    062        @Override
    063        public String toString() {
    064            final StringBuilder sb = new StringBuilder("CompositeTriggeringPolicy{");
    065            boolean first = true;
    066            for (final TriggeringPolicy policy : policies) {
    067                if (!first) {
    068                    sb.append(", ");
    069                }
    070                sb.append(policy.toString());
    071                first = false;
    072            }
    073            sb.append('}');
    074            return sb.toString();
    075        }
    076
    077        /**
    078         * Create a CompositeTriggeringPolicy.
    079         * @param policies The triggering policies.
    080         * @return A CompositeTriggeringPolicy.
    081         */
    082        @PluginFactory
    083        public static CompositeTriggeringPolicy createPolicy(
    084                                                    @PluginElement("Policies") final TriggeringPolicy... policies) {
    085            return new CompositeTriggeringPolicy(policies);
    086        }
    087    }