2 * Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.yangtools.yang2sources.plugin;
10 import com.google.common.annotations.VisibleForTesting;
11 import com.google.common.base.Optional;
12 import com.google.common.base.Preconditions;
13 import com.google.common.base.Throwables;
14 import com.google.common.collect.ImmutableList;
15 import com.google.common.collect.ImmutableMap;
16 import com.google.common.collect.ImmutableMap.Builder;
17 import com.google.common.collect.ImmutableSet;
18 import com.google.common.io.CharStreams;
20 import java.io.IOException;
21 import java.io.Reader;
22 import java.nio.charset.StandardCharsets;
23 import java.util.ArrayList;
24 import java.util.Collection;
25 import java.util.Date;
26 import java.util.HashMap;
27 import java.util.HashSet;
28 import java.util.List;
31 import org.apache.maven.plugin.MojoExecutionException;
32 import org.apache.maven.plugin.MojoFailureException;
33 import org.apache.maven.project.MavenProject;
34 import org.codehaus.plexus.util.FileUtils;
35 import org.opendaylight.yangtools.yang.common.QNameModule;
36 import org.opendaylight.yangtools.yang.common.SimpleDateFormatUtil;
37 import org.opendaylight.yangtools.yang.model.api.Module;
38 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
39 import org.opendaylight.yangtools.yang.model.repo.api.RevisionSourceIdentifier;
40 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
41 import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource;
42 import org.opendaylight.yangtools.yang.parser.repo.YangTextSchemaContextResolver;
43 import org.opendaylight.yangtools.yang.parser.repo.YangTextSchemaSourceRegistration;
44 import org.opendaylight.yangtools.yang2sources.plugin.ConfigArg.CodeGeneratorArg;
45 import org.opendaylight.yangtools.yang2sources.plugin.Util.ContextHolder;
46 import org.opendaylight.yangtools.yang2sources.spi.BasicCodeGenerator;
47 import org.opendaylight.yangtools.yang2sources.spi.BuildContextAware;
48 import org.opendaylight.yangtools.yang2sources.spi.MavenProjectAware;
49 import org.slf4j.Logger;
50 import org.slf4j.LoggerFactory;
51 import org.sonatype.plexus.build.incremental.BuildContext;
52 import org.sonatype.plexus.build.incremental.DefaultBuildContext;
54 class YangToSourcesProcessor {
55 private static final Logger LOG = LoggerFactory.getLogger(YangToSourcesProcessor.class);
57 static final String LOG_PREFIX = "yang-to-sources:";
58 private static final String META_INF_STR = "META-INF";
59 private static final String YANG_STR = "yang";
61 static final String META_INF_YANG_STRING = META_INF_STR + File.separator + YANG_STR;
62 static final String META_INF_YANG_STRING_JAR = META_INF_STR + "/" + YANG_STR;
63 static final String META_INF_YANG_SERVICES_STRING_JAR = META_INF_STR + "/" + "services";
65 private final File yangFilesRootDir;
66 private final Set<File> excludedFiles;
67 private final List<CodeGeneratorArg> codeGenerators;
68 private final MavenProject project;
69 private final boolean inspectDependencies;
70 private final BuildContext buildContext;
71 private final YangProvider yangProvider;
74 YangToSourcesProcessor(final File yangFilesRootDir, final Collection<File> excludedFiles,
75 final List<CodeGeneratorArg> codeGenerators, final MavenProject project, final boolean inspectDependencies,
76 final YangProvider yangProvider) {
77 this(new DefaultBuildContext(), yangFilesRootDir, excludedFiles, codeGenerators, project,
78 inspectDependencies, yangProvider);
81 private YangToSourcesProcessor(final BuildContext buildContext, final File yangFilesRootDir,
82 final Collection<File> excludedFiles, final List<CodeGeneratorArg> codeGenerators,
83 final MavenProject project, final boolean inspectDependencies, final YangProvider yangProvider) {
84 this.buildContext = Preconditions.checkNotNull(buildContext, "buildContext");
85 this.yangFilesRootDir = Preconditions.checkNotNull(yangFilesRootDir, "yangFilesRootDir");
86 this.excludedFiles = ImmutableSet.copyOf(excludedFiles);
87 this.codeGenerators = ImmutableList.copyOf(codeGenerators);
88 this.project = Preconditions.checkNotNull(project);
89 this.inspectDependencies = inspectDependencies;
90 this.yangProvider = yangProvider;
93 YangToSourcesProcessor(final BuildContext buildContext, final File yangFilesRootDir,
94 final Collection<File> excludedFiles, final List<CodeGeneratorArg> codeGenerators,
95 final MavenProject project, final boolean inspectDependencies) {
96 this(yangFilesRootDir, excludedFiles, codeGenerators, project, inspectDependencies, new YangProvider());
99 public void execute() throws MojoExecutionException, MojoFailureException {
100 ContextHolder context = processYang();
101 if (context != null) {
102 generateSources(context);
103 yangProvider.addYangsToMetaInf(project, yangFilesRootDir, excludedFiles);
107 void conditionalExecute(final boolean skip) throws MojoExecutionException, MojoFailureException {
109 LOG.info("Skipping YANG code generation because property yang.skip is true");
111 // But manually add resources
113 yangProvider.addYangsToMetaInf(project, yangFilesRootDir, excludedFiles);
115 // add META_INF/services
116 File generatedServicesDir = new GeneratedDirectories(project).getYangServicesDir();
117 YangProvider.setResource(generatedServicesDir, project);
118 LOG.debug("{} Yang services files from: {} marked as resources: {}", LOG_PREFIX, generatedServicesDir,
119 META_INF_YANG_SERVICES_STRING_JAR);
127 @SuppressWarnings("checkstyle:illegalCatch")
128 private ContextHolder processYang() throws MojoExecutionException {
129 LOG.info("{} Inspecting {}", LOG_PREFIX, yangFilesRootDir);
132 * Collect all files which affect YANG context. This includes all
133 * files in current project and optionally any jars/files in the
136 final Collection<File> yangFilesInProject = Util.listFiles(yangFilesRootDir, excludedFiles);
138 final Collection<File> allFiles = new ArrayList<>(yangFilesInProject);
139 if (inspectDependencies) {
140 allFiles.addAll(Util.findYangFilesInDependencies(project));
143 if (allFiles.isEmpty()) {
144 LOG.info("{} No input files found", LOG_PREFIX);
149 * Check if any of the listed files changed. If no changes occurred,
150 * simply return null, which indicates and of execution.
152 boolean noChange = true;
153 for (final File f : allFiles) {
154 if (buildContext.hasDelta(f)) {
155 LOG.debug("{} buildContext {} indicates {} changed, forcing regeneration", LOG_PREFIX,
162 LOG.info("{} None of {} input files changed", LOG_PREFIX, allFiles.size());
166 final Builder<SourceIdentifier, String> b = ImmutableMap.builder();
167 final YangTextSchemaContextResolver resolver = YangTextSchemaContextResolver.create("maven-plugin");
168 for (final File f : yangFilesInProject) {
169 final YangTextSchemaSourceRegistration reg = resolver.registerSource(YangTextSchemaSource.forFile(f));
170 // Registration has an accurate identifier
171 b.put(reg.getInstance().getIdentifier(), f.getName());
174 final Map<SourceIdentifier, String> sourcesInProject = b.build();
177 * Set contains all modules generated from input sources. Number of
178 * modules may differ from number of sources due to submodules
179 * (parsed submodule's data are added to its parent module). Set
180 * cannot contains null values.
182 if (inspectDependencies) {
183 final List<YangTextSchemaSource> sourcesInDependencies = Util.findYangFilesInDependenciesAsStream(
185 for (YangTextSchemaSource s : toUniqueSources(sourcesInDependencies)) {
186 resolver.registerSource(s);
190 final SchemaContext schemaContext = resolver.trySchemaContext();
191 final Set<Module> projectYangModules = new HashSet<>();
192 final Map<Module, String> projectYangFiles = new HashMap<>();
193 for (Module module : schemaContext.getModules()) {
194 final SourceIdentifier modId = moduleToIdentifier(module);
195 LOG.debug("Looking for source {}", modId);
196 final String file = sourcesInProject.get(modId);
198 LOG.debug("Module {} belongs to current project", module);
199 projectYangModules.add(module);
200 projectYangFiles.put(module, file);
202 for (Module sub : module.getSubmodules()) {
203 final SourceIdentifier subId = moduleToIdentifier(sub);
204 final String subFile = sourcesInProject.get(subId);
205 if (subFile != null) {
206 LOG.debug("Submodule {} belongs to current project", sub);
207 projectYangFiles.put(sub, subFile);
209 LOG.warn("Submodule {} not found in input files", sub);
215 LOG.debug("Processed project files: {}", yangFilesInProject);
216 LOG.info("{} Project model files parsed: {}", LOG_PREFIX, yangFilesInProject.size());
217 return new ContextHolder(schemaContext, projectYangModules, projectYangFiles);
218 } catch (Exception e) {
219 // MojoExecutionException is thrown since execution cannot continue
220 LOG.error("{} Unable to parse {} files from {}", LOG_PREFIX, Util.YANG_SUFFIX, yangFilesRootDir, e);
221 Throwable rootCause = Throwables.getRootCause(e);
222 throw new MojoExecutionException(LOG_PREFIX + " Unable to parse " + Util.YANG_SUFFIX + " files from "
223 + yangFilesRootDir, rootCause);
227 private static SourceIdentifier moduleToIdentifier(final Module module) {
228 final QNameModule mod = module.getQNameModule();
229 final Date rev = mod.getRevision();
230 final Optional<String> optRev;
231 if (!SimpleDateFormatUtil.DEFAULT_DATE_REV.equals(rev)) {
232 optRev = Optional.of(mod.getFormattedRevision());
234 optRev = Optional.absent();
237 return RevisionSourceIdentifier.create(module.getName(), optRev);
240 private static Collection<YangTextSchemaSource> toUniqueSources(final Collection<YangTextSchemaSource> sources)
242 final Map<String, YangTextSchemaSource> byContent = new HashMap<>();
243 for (YangTextSchemaSource s : sources) {
244 try (Reader reader = s.asCharSource(StandardCharsets.UTF_8).openStream()) {
245 final String contents = CharStreams.toString(reader);
246 byContent.putIfAbsent(contents, s);
249 return byContent.values();
253 * Call generate on every generator from plugin configuration.
255 @SuppressWarnings("checkstyle:illegalCatch")
256 private void generateSources(final ContextHolder context) throws MojoFailureException {
257 if (codeGenerators.size() == 0) {
258 LOG.warn("{} No code generators provided", LOG_PREFIX);
262 final Map<String, String> thrown = new HashMap<>();
263 for (CodeGeneratorArg codeGenerator : codeGenerators) {
265 generateSourcesWithOneGenerator(context, codeGenerator);
266 } catch (Exception e) {
267 // try other generators, exception will be thrown after
268 LOG.error("{} Unable to generate sources with {} generator", LOG_PREFIX, codeGenerator
269 .getCodeGeneratorClass(), e);
270 thrown.put(codeGenerator.getCodeGeneratorClass(), e.getClass().getCanonicalName());
274 if (!thrown.isEmpty()) {
275 String message = " One or more code generators failed, including failed list(generatorClass=exception) ";
276 LOG.error("{}" + message + "{}", LOG_PREFIX, thrown.toString());
277 throw new MojoFailureException(LOG_PREFIX + message + thrown.toString());
282 * Instantiate generator from class and call required method.
284 private void generateSourcesWithOneGenerator(final ContextHolder context, final CodeGeneratorArg codeGeneratorCfg)
285 throws ClassNotFoundException, InstantiationException, IllegalAccessException, IOException {
287 codeGeneratorCfg.check();
289 final BasicCodeGenerator g = getInstance(codeGeneratorCfg.getCodeGeneratorClass(), BasicCodeGenerator.class);
290 LOG.info("{} Code generator instantiated from {}", LOG_PREFIX, codeGeneratorCfg.getCodeGeneratorClass());
292 final File outputDir = codeGeneratorCfg.getOutputBaseDir(project);
294 if (outputDir == null) {
295 throw new NullPointerException("outputBaseDir is null. Please provide a valid outputBaseDir value in the "
299 project.addCompileSourceRoot(outputDir.getAbsolutePath());
301 LOG.info("{} Sources will be generated to {}", LOG_PREFIX, outputDir);
302 LOG.debug("{} Project root dir is {}", LOG_PREFIX, project.getBasedir());
303 LOG.debug("{} Additional configuration picked up for : {}: {}", LOG_PREFIX, codeGeneratorCfg
304 .getCodeGeneratorClass(), codeGeneratorCfg.getAdditionalConfiguration());
306 if (g instanceof BuildContextAware) {
307 ((BuildContextAware)g).setBuildContext(buildContext);
309 if (g instanceof MavenProjectAware) {
310 ((MavenProjectAware)g).setMavenProject(project);
312 g.setAdditionalConfig(codeGeneratorCfg.getAdditionalConfiguration());
313 File resourceBaseDir = codeGeneratorCfg.getResourceBaseDir(project);
315 YangProvider.setResource(resourceBaseDir, project);
316 g.setResourceBaseDir(resourceBaseDir);
317 LOG.debug("{} Folder: {} marked as resources for generator: {}", LOG_PREFIX, resourceBaseDir,
318 codeGeneratorCfg.getCodeGeneratorClass());
320 FileUtils.deleteDirectory(outputDir);
321 LOG.info("{} Succesfully deleted output directory {}", LOG_PREFIX, outputDir);
323 Collection<File> generated = g.generateSources(context.getContext(), outputDir, context.getYangModules(),
324 context::moduleToResourcePath);
326 LOG.info("{} Sources generated by {}: {}", LOG_PREFIX, codeGeneratorCfg.getCodeGeneratorClass(), generated);
330 * Instantiate object from fully qualified class name.
332 private static <T> T getInstance(final String codeGeneratorClass, final Class<T> baseType) throws
333 ClassNotFoundException, InstantiationException, IllegalAccessException {
334 final Class<?> clazz = Class.forName(codeGeneratorClass);
336 Preconditions.checkArgument(baseType.isAssignableFrom(clazz), "Code generator %s has to implement %s", clazz,
338 return baseType.cast(clazz.newInstance());