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.commons.monitoring.reporting.web.plugin.report.format;
018    
019    import org.apache.commons.monitoring.configuration.Configuration;
020    import org.apache.commons.monitoring.counters.Unit;
021    import org.apache.commons.monitoring.reporting.web.handler.api.Template;
022    import org.apache.commons.monitoring.reporting.web.template.MapBuilder;
023    
024    import java.util.Collection;
025    import java.util.Map;
026    
027    public class CSVFormat extends MapFormat implements Format {
028        private static final String SEPARATOR = Configuration.getProperty(Configuration.COMMONS_MONITORING_PREFIX + "csv.separator", ";");
029        public static final String HEADER = "Monitor" + SEPARATOR + "Role" + SEPARATOR + toCsv(ATTRIBUTES_ORDERED_LIST);
030    
031        @Override
032        public Template render(final Map<String, ?> params) {
033            final Unit timeUnit = timeUnit(params);
034            return new Template("/templates/report/report-csv.vm",
035                            new MapBuilder<String, Object>()
036                            .set("headers", HEADER)
037                            .set("separator", SEPARATOR)
038                            .set("lines", snapshot(timeUnit))
039                            .build(), false);
040        }
041    
042        @Override
043        public String type() {
044            return "text/plain";
045        }
046    
047        private static String toCsv(final Collection<String> line) {
048            final StringBuilder builder = new StringBuilder();
049            for (final String s : line) {
050                builder.append(s).append(SEPARATOR);
051            }
052    
053            final String str = builder.toString();
054            return str.substring(0, str.length() - 1) + '\n';
055        }
056    }