001/*
002 * Copyright (c) 2024 QOS.ch Sarl (Switzerland)
003 * All rights reserved.
004 *
005 * Permission is hereby granted, free  of charge, to any person obtaining
006 * a  copy  of this  software  and  associated  documentation files  (the
007 * "Software"), to  deal in  the Software without  restriction, including
008 * without limitation  the rights to  use, copy, modify,  merge, publish,
009 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
010 * permit persons to whom the Software  is furnished to do so, subject to
011 * the following conditions:
012 *
013 * The  above  copyright  notice  and  this permission  notice  shall  be
014 * included in all copies or substantial portions of the Software.
015 *
016 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
017 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
018 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
019 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
020 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
021 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
022 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
023 *
024 *
025 *
026 */
027
028package ch.qos.logback.tyler.base.handler;
029
030import ch.qos.logback.core.Context;
031import ch.qos.logback.core.model.AppenderRefModel;
032import ch.qos.logback.core.model.Model;
033import ch.qos.logback.core.model.processor.ModelHandlerBase;
034import ch.qos.logback.core.model.processor.ModelHandlerException;
035import ch.qos.logback.core.model.processor.ModelInterpretationContext;
036import ch.qos.logback.tyler.base.TylerModelInterpretationContext;
037import ch.qos.logback.tyler.base.util.VariableNameUtil;
038import com.squareup.javapoet.MethodSpec;
039
040
041public class AppenderRefModelHandler extends ModelHandlerBase {
042
043    boolean inError = false;
044
045    public AppenderRefModelHandler(Context context) {
046        super(context);
047    }
048
049    static public ModelHandlerBase makeInstance(Context context, ModelInterpretationContext ic) {
050        return new AppenderRefModelHandler(context);
051    }
052
053    @Override
054    protected Class<? extends AppenderRefModel> getSupportedModelClass() {
055        return AppenderRefModel.class;
056    }
057
058    @Override
059    public void handle(ModelInterpretationContext mic, Model model) throws ModelHandlerException {
060        TylerModelInterpretationContext tmic = (TylerModelInterpretationContext) mic;
061
062        AppenderRefModel appenderRefModel = (AppenderRefModel) model;
063        Object o = mic.peekObject();
064
065        if(o instanceof String) {
066            String loggerName  = (String) o;
067            String variableName = VariableNameUtil.loggerNameToVariableName(loggerName);
068            addJavaStatement(tmic.configureMethodSpecBuilder, variableName, appenderRefModel.getRef());
069        } else if(o instanceof ImplicitModelHandlerData) {
070            ImplicitModelHandlerData implicitModelHandlerData = (ImplicitModelHandlerData) o;
071             String variableName = implicitModelHandlerData.variableName;
072             addJavaStatementForNestedAppender(implicitModelHandlerData.methodSpecBuilder, variableName, appenderRefModel.getRef());
073        } else {
074            inError = true;
075            addError("Was expecting an object of type AppenderAttachableData");
076            return;
077        }
078
079    }
080
081    private void addJavaStatement(MethodSpec.Builder methodSpecBuilder, String variableName, String ref) {
082        String appenderVariableName = VariableNameUtil.appenderNameToVariableName(ref);
083        methodSpecBuilder.addStatement("$N.addAppender($N)", variableName, appenderVariableName);
084    }
085
086    private void addJavaStatementForNestedAppender(MethodSpec.Builder methodSpecBuilder, String variableName, String ref) {
087        String nestedAppenderVariableName = VariableNameUtil.appenderNameToVariableName(ref);
088
089        methodSpecBuilder.beginControlFlow("if($N == null)", nestedAppenderVariableName);
090        methodSpecBuilder.addStatement("addInfo(\"Could not find appender named '$N'\")", ref);
091        methodSpecBuilder.nextControlFlow("else");
092        methodSpecBuilder.addStatement("$N.addAppender($N)", variableName, nestedAppenderVariableName);
093        methodSpecBuilder.endControlFlow();
094    }
095
096
097}