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1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2015, 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.classic.joran.action;
15  
16  import javax.naming.Context;
17  import javax.naming.NamingException;
18  
19  import org.xml.sax.Attributes;
20  
21  import ch.qos.logback.classic.util.JNDIUtil;
22  import ch.qos.logback.core.joran.action.Action;
23  import ch.qos.logback.core.joran.action.ActionUtil;
24  import ch.qos.logback.core.joran.action.ActionUtil.Scope;
25  import ch.qos.logback.core.joran.spi.InterpretationContext;
26  import ch.qos.logback.core.util.OptionHelper;
27  
28  /**
29   * Insert an env-entry found in JNDI as a new context variable  
30  
31   * @author Ceki Gulcu
32   *
33   */
34  public class InsertFromJNDIAction extends Action {
35  
36      public static final String ENV_ENTRY_NAME_ATTR = "env-entry-name";
37      public static final String AS_ATTR = "as";
38  
39      public void begin(InterpretationContext ec, String name, Attributes attributes) {
40  
41          int errorCount = 0;
42          String envEntryName = ec.subst(attributes.getValue(ENV_ENTRY_NAME_ATTR));
43          String asKey = ec.subst(attributes.getValue(AS_ATTR));
44  
45          String scopeStr = attributes.getValue(SCOPE_ATTRIBUTE);
46          Scope scope = ActionUtil.stringToScope(scopeStr);
47  
48          String envEntryValue;
49  
50          if (OptionHelper.isEmpty(envEntryName)) {
51              String lineColStr = getLineColStr(ec);
52              addError("[" + ENV_ENTRY_NAME_ATTR + "] missing, around " + lineColStr);
53              errorCount++;
54          }
55  
56          if (OptionHelper.isEmpty(asKey)) {
57              String lineColStr = getLineColStr(ec);
58              addError("[" + AS_ATTR + "] missing, around " + lineColStr);
59              errorCount++;
60          }
61  
62          if (errorCount != 0) {
63              return;
64          }
65  
66          try {
67              Context ctx = JNDIUtil.getInitialContext();
68              envEntryValue = JNDIUtil.lookup(ctx, envEntryName);
69              if (OptionHelper.isEmpty(envEntryValue)) {
70                  addError("[" + envEntryName + "] has null or empty value");
71              } else {
72                  addInfo("Setting variable [" + asKey + "] to [" + envEntryValue + "] in [" + scope + "] scope");
73                  ActionUtil.setProperty(ec, asKey, envEntryValue, scope);
74              }
75          } catch (NamingException e) {
76              addError("Failed to lookup JNDI env-entry [" + envEntryName + "]");
77          }
78  
79      }
80  
81      public void end(InterpretationContext ec, String name) {
82      }
83  }