| // |
| // ======================================================================== |
| // Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.monitor.triggers; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| |
| import org.eclipse.jetty.monitor.jmx.EventState; |
| import org.eclipse.jetty.monitor.jmx.EventTrigger; |
| |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * AndEventTrigger |
| * |
| * EventTrigger aggregation using logical OR operation |
| * that executes matching of the aggregated event triggers |
| * in left to right order |
| */ |
| public class OrEventTrigger |
| extends EventTrigger |
| { |
| private final List<EventTrigger> _triggers; |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * Construct an event trigger and associate the list |
| * of event triggers to be aggregated by this trigger |
| * |
| * @param triggers list of event triggers to add |
| */ |
| public OrEventTrigger(List<EventTrigger> triggers) |
| { |
| _triggers = triggers; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * Construct an event trigger and associate the array |
| * of event triggers to be aggregated by this trigger |
| * |
| * @param triggers array of event triggers to add |
| */ |
| public OrEventTrigger(EventTrigger... triggers) |
| { |
| _triggers = Arrays.asList(triggers); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * Verify if the event trigger conditions are in the |
| * appropriate state for an event to be triggered. |
| * This event trigger will match if any of aggregated |
| * event triggers would return a match. |
| * |
| * @see org.eclipse.jetty.monitor.jmx.EventTrigger#match(long) |
| */ |
| public boolean match(long timestamp) |
| throws Exception |
| { |
| for(EventTrigger trigger : _triggers) |
| { |
| if (trigger.match(timestamp)) |
| return true; |
| } |
| return false; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * Retrieve the event state associated with specified invocation |
| * of the event trigger match method. This event trigger retrieves |
| * the combined event state of all aggregated event triggers. |
| * |
| * @param timestamp time stamp associated with invocation |
| * @return event state or null if not found |
| * |
| * @see org.eclipse.jetty.monitor.jmx.EventTrigger#getState(long) |
| */ |
| @Override |
| @SuppressWarnings("unchecked") |
| public EventState getState(long timestamp) |
| { |
| EventState state = new EventState(); |
| |
| for (EventTrigger trigger : _triggers) |
| { |
| EventState subState = trigger.getState(timestamp); |
| if (subState!=null) |
| { |
| state.addAll(subState.values()); |
| } |
| } |
| |
| return state; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * Returns the string representation of this event trigger |
| * in the format "OR(triger1,trigger2,...)". |
| * |
| * @return string representation of the event trigger |
| * |
| * @see java.lang.Object#toString() |
| */ |
| public String toString() |
| { |
| int cnt = 0; |
| StringBuilder result = new StringBuilder(); |
| |
| result.append("OR("); |
| for (EventTrigger trigger : _triggers) |
| { |
| result.append(cnt++ > 0 ? "," : ""); |
| result.append(trigger); |
| } |
| result.append(')'); |
| |
| return result.toString(); |
| } |
| } |