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.net;
018    
019    import org.apache.logging.log4j.Level;
020    
021    /**
022     * The Priority used in the Syslog system. Calculated from the Facility and Severity values.
023     */
024    public class Priority {
025    
026        private final Facility facility;
027        private final Severity severity;
028    
029        /**
030         * The Constructor.
031         * @param facility The Facility.
032         * @param severity The Severity.
033         */
034        public Priority(final Facility facility, final Severity severity) {
035            this.facility = facility;
036            this.severity = severity;
037        }
038    
039        /**
040         * Returns the priority value based on the Facility and Log Level.
041         * @param facility The Facility.
042         * @param level The Level.
043         * @return The integer value of the priority.
044         */
045        public static int getPriority(final Facility facility, final Level level) {
046            return toPriority(facility, Severity.getSeverity(level));
047        }
048    
049        private static int toPriority(Facility aFacility, Severity aSeverity) {
050            return (aFacility.getCode() << 3) + aSeverity.getCode();        
051        }
052        
053        /**
054         * Returns the Facility.
055         * @return the Facility.
056         */
057        public Facility getFacility() {
058            return facility;
059        }
060    
061        /**
062         * Returns the Severity.
063         * @return the Severity.
064         */
065        public Severity getSeverity() {
066            return severity;
067        }
068    
069        /**
070         * Returns the value of this Priority.
071         * @return the value of this Priority.
072         */
073        public int getValue() {
074            return toPriority(facility, severity);
075        }
076    
077        @Override
078        public String toString() {
079            return Integer.toString(getValue());
080        }
081    }