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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.monitoring.reporting.web.plugin.report.format;
18  
19  import org.apache.commons.monitoring.configuration.Configuration;
20  import org.apache.commons.monitoring.counters.Unit;
21  import org.apache.commons.monitoring.reporting.web.handler.api.Template;
22  import org.apache.commons.monitoring.reporting.web.template.MapBuilder;
23  
24  import java.util.Collection;
25  import java.util.Map;
26  
27  public class CSVFormat extends MapFormat implements Format {
28      private static final String SEPARATOR = Configuration.getProperty(Configuration.COMMONS_MONITORING_PREFIX + "csv.separator", ";");
29      public static final String HEADER = "Monitor" + SEPARATOR + "Role" + SEPARATOR + toCsv(ATTRIBUTES_ORDERED_LIST);
30  
31      @Override
32      public Template render(final Map<String, ?> params) {
33          final Unit timeUnit = timeUnit(params);
34          return new Template("/templates/report/report-csv.vm",
35                          new MapBuilder<String, Object>()
36                          .set("headers", HEADER)
37                          .set("separator", SEPARATOR)
38                          .set("lines", snapshot(timeUnit))
39                          .build(), false);
40      }
41  
42      @Override
43      public String type() {
44          return "text/plain";
45      }
46  
47      private static String toCsv(final Collection<String> line) {
48          final StringBuilder builder = new StringBuilder();
49          for (final String s : line) {
50              builder.append(s).append(SEPARATOR);
51          }
52  
53          final String str = builder.toString();
54          return str.substring(0, str.length() - 1) + '\n';
55      }
56  }