Logback: the reliable, generic, fast and flexible logging framework.
Copyright (C) 1999-2015, QOS.ch. All rights reserved.
This program and the accompanying materials are dual-licensed under
either the terms of the Eclipse Public License v1.0 as published by
the Eclipse Foundation
  or (per the licensee's choosing)
under the terms of the GNU Lesser General Public License version 2.1
as published by the Free Software Foundation.
/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.classic.joran.action;

import javax.naming.Context;
import javax.naming.NamingException;

import org.xml.sax.Attributes;

import ch.qos.logback.classic.util.JNDIUtil;
import ch.qos.logback.core.joran.action.Action;
import ch.qos.logback.core.joran.action.ActionUtil;
import ch.qos.logback.core.joran.action.ActionUtil.Scope;
import ch.qos.logback.core.joran.spi.InterpretationContext;
import ch.qos.logback.core.util.OptionHelper;

Insert an env-entry found in JNDI as a new context variable  
Author:
Ceki Gulcu/**
 * Insert an env-entry found in JNDI as a new context variable  

 * @author Ceki Gulcu
 *
 */
public class InsertFromJNDIAction extends Action {

    public static final String ENV_ENTRY_NAME_ATTR = "env-entry-name";
    public static final String AS_ATTR = "as";

    public void begin(InterpretationContext ec, String name, Attributes attributes) {

        int errorCount = 0;
        String envEntryName = ec.subst(attributes.getValue(ENV_ENTRY_NAME_ATTR));
        String asKey = ec.subst(attributes.getValue(AS_ATTR));

        String scopeStr = attributes.getValue(SCOPE_ATTRIBUTE);
        Scope scope = ActionUtil.stringToScope(scopeStr);

        String envEntryValue;

        if (OptionHelper.isEmpty(envEntryName)) {
            String lineColStr = getLineColStr(ec);
            addError("[" + ENV_ENTRY_NAME_ATTR + "] missing, around " + lineColStr);
            errorCount++;
        }

        if (OptionHelper.isEmpty(asKey)) {
            String lineColStr = getLineColStr(ec);
            addError("[" + AS_ATTR + "] missing, around " + lineColStr);
            errorCount++;
        }

        if (errorCount != 0) {
            return;
        }

        try {
            Context ctx = JNDIUtil.getInitialContext();
            envEntryValue = JNDIUtil.lookup(ctx, envEntryName);
            if (OptionHelper.isEmpty(envEntryValue)) {
                addError("[" + envEntryName + "] has null or empty value");
            } else {
                addInfo("Setting variable [" + asKey + "] to [" + envEntryValue + "] in [" + scope + "] scope");
                ActionUtil.setProperty(ec, asKey, envEntryValue, scope);
            }
        } catch (NamingException e) {
            addError("Failed to lookup JNDI env-entry [" + envEntryName + "]");
        }

    }

    public void end(InterpretationContext ec, String name) {
    }
}