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1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2022, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package ch.qos.logback.core.model.processor;
15  
16  import ch.qos.logback.core.Context;
17  import ch.qos.logback.core.joran.action.Action;
18  import ch.qos.logback.core.joran.action.ActionUtil;
19  import ch.qos.logback.core.joran.action.ActionUtil.Scope;
20  import ch.qos.logback.core.joran.action.TimestampAction;
21  import ch.qos.logback.core.model.Model;
22  import ch.qos.logback.core.model.TimestampModel;
23  import ch.qos.logback.core.util.CachingDateFormatter;
24  import ch.qos.logback.core.util.OptionHelper;
25  
26  public class TimestampModelHandler extends ModelHandlerBase {
27  
28      boolean inError = false;
29  
30      public TimestampModelHandler(Context context) {
31          super(context);
32      }
33  
34      static public ModelHandlerBase makeInstance(Context context, ModelInterpretationContext ic) {
35          return new TimestampModelHandler(context);
36      }
37  
38      @Override
39      protected Class<TimestampModel> getSupportedModelClass() {
40          return TimestampModel.class;
41      }
42  
43      @Override
44      public void handle(ModelInterpretationContext interpretationContext, Model model) {
45          TimestampModel timestampModel = (TimestampModel) model;
46          String keyStr = timestampModel.getKey();
47          if (OptionHelper.isNullOrEmptyOrAllSpaces(keyStr)) {
48              addError("Attribute named [" + Action.KEY_ATTRIBUTE + "] cannot be empty");
49              inError = true;
50          }
51          String datePatternStr = timestampModel.getDatePattern();
52          if (OptionHelper.isNullOrEmptyOrAllSpaces(datePatternStr)) {
53              addError("Attribute named [" + TimestampAction.DATE_PATTERN_ATTRIBUTE + "] cannot be empty");
54              inError = true;
55          }
56  
57          String timeReferenceStr = timestampModel.getTimeReference();
58          long timeReference;
59          if (TimestampModel.CONTEXT_BIRTH.equalsIgnoreCase(timeReferenceStr)) {
60              addInfo("Using context birth as time reference.");
61              timeReference = context.getBirthTime();
62          } else {
63              timeReference = System.currentTimeMillis();
64              addInfo("Using current interpretation time, i.e. now, as time reference.");
65          }
66  
67          if (inError)
68              return;
69  
70          String scopeStr = timestampModel.getScopeStr();
71          Scope scope = ActionUtil.stringToScope(scopeStr);
72  
73          CachingDateFormatter sdf = new CachingDateFormatter(datePatternStr);
74          String val = sdf.format(timeReference);
75  
76          addInfo("Adding property to the context with key=\"" + keyStr + "\" and value=\"" + val + "\" to the " + scope
77                  + " scope");
78          ActionUtil.setProperty(interpretationContext, keyStr, val, scope);
79  
80      }
81  
82  }