001package ch.qos.logback.core.model.processor;
002
003import javax.naming.NamingException;
004
005import ch.qos.logback.core.Context;
006import ch.qos.logback.core.joran.action.ActionUtil;
007import ch.qos.logback.core.joran.action.ActionUtil.Scope;
008import ch.qos.logback.core.model.InsertFromJNDIModel;
009import ch.qos.logback.core.model.Model;
010import ch.qos.logback.core.util.JNDIUtil;
011import ch.qos.logback.core.util.OptionHelper;
012import ch.qos.logback.core.model.ModelUtil;
013
014public class InsertFromJNDIModelHandler extends ModelHandlerBase {
015
016    public InsertFromJNDIModelHandler(Context context) {
017        super(context);
018    }
019
020    static public ModelHandlerBase makeInstance(Context context, ModelInterpretationContext ic) {
021        return new InsertFromJNDIModelHandler(context);
022    }
023
024    @Override
025    protected Class<InsertFromJNDIModel> getSupportedModelClass() {
026        return InsertFromJNDIModel.class;
027    }
028
029    @Override
030    public void handle(ModelInterpretationContext mic, Model model) throws ModelHandlerException {
031        int errorCount = 0;
032
033        InsertFromJNDIModel ifjm = (InsertFromJNDIModel) model;
034
035        String envEntryName = mic.subst(ifjm.getEnvEntryName());
036        String asKey = mic.subst(ifjm.getAs());
037
038        String scopeStr = mic.subst(ifjm.getScopeStr());
039        Scope scope = ActionUtil.stringToScope(scopeStr);
040
041        String envEntryValue;
042
043        if (OptionHelper.isNullOrEmpty(envEntryName)) {
044            addError("[" + InsertFromJNDIModel.ENV_ENTRY_NAME_ATTR + "] missing");
045            errorCount++;
046        }
047
048        if (OptionHelper.isNullOrEmpty(asKey)) {
049            addError("[" + InsertFromJNDIModel.AS_ATTR + "] missing");
050            errorCount++;
051        }
052
053        if (errorCount != 0) {
054            return;
055        }
056
057        try {
058            javax.naming.Context ctx = JNDIUtil.getInitialContext();
059            envEntryValue = JNDIUtil.lookupString(ctx, envEntryName);
060            if (OptionHelper.isNullOrEmpty(envEntryValue)) {
061                addError("[" + envEntryName + "] has null or empty value");
062            } else {
063                addInfo("Setting variable [" + asKey + "] to [" + envEntryValue + "] in [" + scope + "] scope");
064                ModelUtil.setProperty(mic, asKey, envEntryValue, scope);
065            }
066        } catch (NamingException e) {
067            addError("Failed to lookup JNDI env-entry [" + envEntryName + "]");
068        }
069
070    }
071
072}