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 */
027package ch.qos.logback.tyler.base;
028
029import ch.qos.logback.classic.joran.JoranConfigurator;
030import ch.qos.logback.classic.model.ConfigurationModel;
031import ch.qos.logback.classic.model.ContextNameModel;
032import ch.qos.logback.classic.model.LevelModel;
033import ch.qos.logback.classic.model.LoggerContextListenerModel;
034import ch.qos.logback.classic.model.LoggerModel;
035import ch.qos.logback.classic.model.RootLoggerModel;
036import ch.qos.logback.classic.model.PropertiesConfiguratorModel;
037import ch.qos.logback.classic.model.processor.LogbackClassicDefaultNestedComponentRules;
038import ch.qos.logback.core.Context;
039import ch.qos.logback.core.joran.event.SaxEventRecorder;
040import ch.qos.logback.core.joran.spi.JoranException;
041import ch.qos.logback.core.model.*;
042import ch.qos.logback.core.model.conditional.ByPropertiesConditionModel;
043import ch.qos.logback.core.model.conditional.ElseModel;
044import ch.qos.logback.core.model.conditional.IfModel;
045import ch.qos.logback.core.model.conditional.ThenModel;
046import ch.qos.logback.core.model.processor.DefaultProcessor;
047import ch.qos.logback.core.model.processor.ImportModelHandler;
048import ch.qos.logback.core.util.StatusPrinter2;
049import ch.qos.logback.tyler.base.handler.*;
050import ch.qos.logback.tyler.base.util.StringPrintStream;
051import com.squareup.javapoet.JavaFile;
052import com.squareup.javapoet.MethodSpec;
053import com.squareup.javapoet.TypeSpec;
054import org.xml.sax.InputSource;
055
056import java.io.ByteArrayInputStream;
057import java.io.IOException;
058import java.io.InputStream;
059import java.util.ArrayList;
060import java.util.Arrays;
061import java.util.List;
062
063public class ModelToJava {
064
065
066    final Context context;
067
068    public ModelToJava(Context context) {
069        this.context = context;
070    }
071
072
073    public Model extractModel(String input) throws JoranException {
074        InputStream inputStream = new ByteArrayInputStream(input.getBytes());
075        InputSource inputSource = new InputSource(inputStream);
076        inputSource.setSystemId("UNKNOWN");
077
078        JoranConfigurator joranConfigurator = new JoranConfigurator();
079        joranConfigurator.setContext(context);
080
081        SaxEventRecorder recorder = joranConfigurator.populateSaxEventRecorder(inputSource);
082        Model top = joranConfigurator.buildModelFromSaxEventList(recorder.getSaxEventList());
083        return top;
084    }
085
086    public StringBuffer toJavaAsStringBuffer(Model topModel) throws IOException {
087        TylerModelInterpretationContext tmic = new TylerModelInterpretationContext(context);
088        tmic.setTopModel(topModel);
089
090        LogbackClassicDefaultNestedComponentRules.addDefaultNestedComponentRegistryRules(tmic.getDefaultNestedComponentRegistry());
091
092        DefaultProcessor defaultProcessor = new DefaultProcessor(context, tmic);
093        // this is where we link model classes to their Tyler-specific handlers
094        addModelHandlerAssociations(defaultProcessor);
095
096        defaultProcessor.process(topModel);
097
098
099        tmic.configureMethodSpecBuilder.addStatement("return ExecutionStatus.DO_NOT_INVOKE_NEXT_IF_ANY");
100        MethodSpec configureMethodSpec = tmic.configureMethodSpecBuilder.build();
101
102        tmic.fieldSpecs.forEach(tmic.tylerConfiguratorTSB.fieldSpecs::addFirst);
103        tmic.tylerConfiguratorTSB.methodSpecs.addFirst(configureMethodSpec);
104
105        for(String methodName: tmic.mapOfMethodSpecBuilders.keySet()) {
106            MethodSpec.Builder methodSpecBuilder = tmic.mapOfMethodSpecBuilders.get(methodName);
107            MethodSpec methodSpec = methodSpecBuilder.build();
108            tmic.tylerConfiguratorTSB.methodSpecs.add(methodSpec);
109        }
110
111        TypeSpec tylerConfiguratorTypeSpec = tmic.tylerConfiguratorTSB.build();
112
113        JavaFile.Builder javaFileBuilder = JavaFile.builder("com.example", tylerConfiguratorTypeSpec);
114        javaFileBuilder.skipJavaLangImports(true);
115
116        tmic.staticImportsList.forEach(sid -> javaFileBuilder.addStaticImport(sid.aClass(), sid.methodName()));
117
118        JavaFile javaFile = javaFileBuilder.indent("  ").build();
119        StringBuffer sb = new StringBuffer();
120        String s = javaFile.toString();
121        javaFile.writeTo(sb);
122        return sb;
123    }
124
125    public String toJava(Model topModel) throws IOException {
126        StringBuffer buf = toJavaAsStringBuffer(topModel);
127        return buf.toString();
128    }
129
130    public List<String>  statusToStringList() {
131        List<String> resultList = new ArrayList<>();
132        StatusPrinter2 statusPrinter2 = new StatusPrinter2();
133        StringPrintStream sps = new StringPrintStream(System.out, false);
134        statusPrinter2.setPrintStream(sps);
135        statusPrinter2.print(context);
136        for(String s: sps.stringList) {
137            String[] split = s.split("\n");
138            Arrays.stream(split).forEach(n -> resultList.add("// "+n));
139        }
140        return resultList;
141    }
142
143    /**
144     * Associate model classes with their respective handlers. This is where ModelHandlers specific to
145     * Tyler are linked to the model processing.
146     *
147     * @param defaultProcessor
148     */
149    private void addModelHandlerAssociations(DefaultProcessor defaultProcessor) {
150        defaultProcessor.addHandler(ConfigurationModel.class, ConfigurationModelHandler::makeInstance);
151        defaultProcessor.addHandler(PropertyModel.class, VariableModelHandler::makeInstance);
152
153        defaultProcessor.addHandler(ContextNameModel.class, ContextNameModelHandler::makeInstance);
154        defaultProcessor.addHandler(ImportModel.class, ImportModelHandler::makeInstance);
155        defaultProcessor.addHandler(DefineModel.class, DefineModelHandler::makeInstance);
156        defaultProcessor.addHandler(InsertFromJNDIModel.class, TylerInsertFromJNDIModelHandler::makeInstance);
157
158        defaultProcessor.addHandler(StatusListenerModel.class, StatusListenerModelHandler::makeInstance);
159        defaultProcessor.addHandler(ShutdownHookModel.class, ShutdownHookModelHandler::makeInstance);
160        defaultProcessor.addHandler(TimestampModel.class, TimestampModelHandler::makeInstance);
161        defaultProcessor.addHandler(PropertiesConfiguratorModel.class, TylerPropertiesConfiguratorModelHandler::makeInstance);
162        defaultProcessor.addHandler(AppenderModel.class, AppenderModelHandler::makeInstance);
163        defaultProcessor.addHandler(ImplicitModel.class, ImplicitModelHandler::makeInstance);
164        defaultProcessor.addHandler(LoggerModel.class, LoggerModelHandler::makeInstance);
165        defaultProcessor.addHandler(RootLoggerModel.class, RootLoggerModelHandler::makeInstance);
166        defaultProcessor.addHandler(LevelModel.class, LevelModelHandler::makeInstance);
167        defaultProcessor.addHandler(AppenderRefModel.class, AppenderRefModelHandler::makeInstance);
168
169        defaultProcessor.addHandler(IncludeModel.class, TylerIncludeModelHandler::makeInstance);
170
171        defaultProcessor.addHandler(LoggerContextListenerModel.class, LoggerContextListenerModelHandler::makeInstance);
172        defaultProcessor.addHandler(SequenceNumberGeneratorModel.class, SequenceNumberGeneratorModelHandler::makeInstance);
173
174
175        defaultProcessor.addHandler(ByPropertiesConditionModel.class, ByPropertiesConditionModelHandler::makeInstance);
176        defaultProcessor.addHandler(IfModel.class, IfModelHandler::makeInstance);
177        defaultProcessor.addHandler(ThenModel.class, ThenModelHandler::makeInstance);
178        defaultProcessor.addHandler(ElseModel.class, ElseModelHandler::makeInstance);
179
180    }
181
182}