/** Resolve the artifacts with the given key.
 *
 * @param groupId the group identifier.
 * @param artifactId the artifact identifier.
 * @return the discovered artifacts.
 * @throws MojoExecutionException if resolution cannot be done.
 * @since 0.8
 */
public Set<Artifact> resolve(String groupId, String artifactId) throws MojoExecutionException {
	final ArtifactResolutionRequest request = new ArtifactResolutionRequest();
	request.setResolveRoot(true);
	request.setResolveTransitively(true);
	request.setLocalRepository(getSession().getLocalRepository());
	request.setRemoteRepositories(getSession().getCurrentProject().getRemoteArtifactRepositories());
	request.setOffline(getSession().isOffline());
	request.setForceUpdate(getSession().getRequest().isUpdateSnapshots());
	request.setServers(getSession().getRequest().getServers());
	request.setMirrors(getSession().getRequest().getMirrors());
	request.setProxies(getSession().getRequest().getProxies());
	request.setArtifact(createArtifact(groupId, artifactId));

	final ArtifactResolutionResult result = resolve(request);

	return result.getArtifacts();
}
 

/**
 * Read transitive dependencies of given plugin and store them in map.
 *
 * @param plugin
 *            plugin to read
 * @param map
 *            map, where founded transitive dependencies will be stored
 * @param repoSystem
 *            repository system
 * @param localRepository
 *            local repository
 * @param remoteRepos
 *            list of remote repositories
 */
private static void getPluginTransitiveDependencies(final Plugin plugin,
        final Map<Artifact, Collection<Artifact>> map, final RepositorySystem repoSystem,
        final ArtifactRepository localRepository, final List<ArtifactRepository> remoteRepos) {

    List<Dependency> pluginDependencies = plugin.getDependencies();
    for (Dependency dep : pluginDependencies) {
        Artifact artifact = repoSystem.createDependencyArtifact(dep);

        ArtifactResolutionRequest request = new ArtifactResolutionRequest();
        request.setArtifact(artifact);
        request.setResolveTransitively(true);
        request.setLocalRepository(localRepository);
        request.setRemoteRepositories(remoteRepos);

        ArtifactResolutionResult result = repoSystem.resolve(request);
        Set<Artifact> pluginDependencyDependencies = result.getArtifacts();
        map.put(artifact, pluginDependencyDependencies);
    }
}
 

private Artifact resolveArbitraryWsdl(Artifact artifact) {
    ArtifactResolutionRequest request = new ArtifactResolutionRequest();
    request.setArtifact(artifact);
    request.setResolveRoot(true).setResolveTransitively(false);
    request.setServers(mavenSession.getRequest().getServers());
    request.setMirrors(mavenSession.getRequest().getMirrors());
    request.setProxies(mavenSession.getRequest().getProxies());
    request.setLocalRepository(mavenSession.getLocalRepository());
    request.setRemoteRepositories(mavenSession.getRequest().getRemoteRepositories());
    ArtifactResolutionResult result = repositorySystem.resolve(request);

    Artifact resolvedArtifact = result.getOriginatingArtifact();
    if (resolvedArtifact == null && !CollectionUtils.isEmpty(result.getArtifacts())) {
        resolvedArtifact = result.getArtifacts().iterator().next();
    }
    return resolvedArtifact;
}
 

@Test
public void testSimple() throws MojoFailureException, MojoExecutionException {
	JApiCmpMojo mojo = new JApiCmpMojo();
	Version oldVersion = createVersion("groupId", "artifactId", "0.1.0");
	Version newVersion = createVersion("groupId", "artifactId", "0.1.1");
	PluginParameters pluginParameters = new PluginParameters(false, newVersion, oldVersion, new Parameter(), null, Optional.of(Paths.get(System.getProperty("user.dir"), "target", "simple").toFile()), Optional.<String>absent(), true, null, null, null, null);
	ArtifactResolver artifactResolver = mock(ArtifactResolver.class);
	ArtifactResolutionResult artifactResolutionResult = mock(ArtifactResolutionResult.class);
	Set<Artifact> artifactSet = new HashSet<>();
	Artifact resolvedArtifact = mock(Artifact.class);
	artifactSet.add(resolvedArtifact);
	when(resolvedArtifact.getFile()).thenReturn(Paths.get(System.getProperty("user.dir"), "target", "guava-18.0.jar").toFile());
	when(artifactResolutionResult.getArtifacts()).thenReturn(artifactSet);
	when(artifactResolver.resolve(Matchers.<ArtifactResolutionRequest>anyObject())).thenReturn(artifactResolutionResult);
	ArtifactFactory artifactFactory = mock(ArtifactFactory.class);
	when(artifactFactory.createArtifactWithClassifier(eq("groupId"), eq("artifactId"), eq("0.1.1"), anyString(), anyString())).thenReturn(mock(Artifact.class));
	MavenProject mavenProject = mock(MavenProject.class);
	when(mavenProject.getArtifact()).thenReturn(mock(Artifact.class));
	MavenParameters mavenParameters = new MavenParameters(new ArrayList<ArtifactRepository>(), artifactFactory, mock(ArtifactRepository.class), artifactResolver, mavenProject, mock(MojoExecution.class), "0.0.1", mock(ArtifactMetadataSource.class));

	mojo.executeWithParameters(pluginParameters, mavenParameters);
	assertThat(Files.exists(Paths.get(System.getProperty("user.dir"), "target", "simple", "japicmp", "japicmp.diff")), is(true));
	assertThat(Files.exists(Paths.get(System.getProperty("user.dir"), "target", "simple", "japicmp", "japicmp.xml")), is(true));
	assertThat(Files.exists(Paths.get(System.getProperty("user.dir"), "target", "simple", "japicmp", "japicmp.html")), is(true));
}
 

static ArtifactResolutionResult resolve(Log log, Artifact artifact, RepositorySystem repositorySystem,
        ArtifactRepository localRepository, List<ArtifactRepository> remoteRepositories) {
    ArtifactResolutionRequest request = new ArtifactResolutionRequest() //
            .setArtifact(artifact) //
            .setLocalRepository(localRepository) //
            .setRemoteRepositories(remoteRepositories) //
            .setResolveTransitively(true) //
            .addListener(Util.createLoggingResolutionListener(log));
    return repositorySystem.resolve(request);
}
 

/**
 * 
 * @param sources
 * @param remoteRepositories - these instances need to be properly mirrored and proxied. Either by creating via EmbedderFactory.createRemoteRepository()
 *              or by using instances from MavenProject
 * @param localRepository
 * @throws ArtifactResolutionException
 * @throws ArtifactNotFoundException 
 */
public void resolve(Artifact sources, List<ArtifactRepository> remoteRepositories, ArtifactRepository localRepository) throws ArtifactResolutionException, ArtifactNotFoundException {
    setUpLegacySupport();
    ArtifactResolutionRequest req = new ArtifactResolutionRequest();
    req.setLocalRepository(localRepository);
    req.setRemoteRepositories(remoteRepositories);
    req.setArtifact(sources);
    req.setOffline(isOffline());
    ArtifactResolutionResult result = repositorySystem.resolve(req);
    normalizePath(sources);
    // XXX check result for exceptions and throw them now?
    for (Exception ex : result.getExceptions()) {
        LOG.log(Level.FINE, null, ex);
    }
}
 

private Set<Artifact> resolve(final Set<Artifact> dependencies) {
    ArtifactResolutionRequest request = new ArtifactResolutionRequest();
    request.setArtifact(getProject().getArtifact());
    request.setArtifactDependencies(dependencies);
    request.setLocalRepository(localRepository);
    request.setRemoteRepositories(remoteRepositories);
    request.setManagedVersionMap(getProject().getManagedVersionMap());
    request.setResolveTransitively(true);
    ArtifactResolutionResult result = artifactResolver.resolve(request);
    return result.getArtifacts();
}
 

private Set<URL> toURLs(final Artifact artifact) throws MojoExecutionException {
    final Set<URL> urls = new HashSet<>();

    final File artifactFile = artifact.getFile();
    if (artifactFile == null) {
        getLog().debug("Attempting to resolve Artifact " + artifact + " because it has no File associated with it");

        final ArtifactResolutionRequest request = new ArtifactResolutionRequest();
        request.setLocalRepository(localRepo);
        request.setArtifact(artifact);

        final ArtifactResolutionResult result = artifactResolver.resolve(request);
        if (!result.isSuccess()) {
            throw new MojoExecutionException("Could not resolve local dependency " + artifact);
        }

        getLog().debug("Resolved Artifact " + artifact + " to " + result.getArtifacts());

        for (final Artifact resolved : result.getArtifacts()) {
            urls.addAll(toURLs(resolved));
        }
    } else {
        try {
            final URL url = artifact.getFile().toURI().toURL();
            getLog().debug("Adding URL " + url + " to ClassLoader");
            urls.add(url);
        } catch (final MalformedURLException mue) {
            throw new MojoExecutionException("Failed to convert File " + artifact.getFile() + " into URL", mue);
        }
    }

    return urls;
}
 

@Test
public void checkClasspathTest() throws Exception {
    final MavenProject project = mock(MavenProject.class);
    final Plugin plugin = mock(Plugin.class);
    final RepositorySystem repoSystem = mock(RepositorySystem.class);
    final ArtifactRepository localRepo = mock(ArtifactRepository.class);
    final ArtifactResolutionResult artifactResolResult = mock(ArtifactResolutionResult.class);
    final Artifact artifact = mock(Artifact.class);
    final Dependency dep = mock(Dependency.class);

    final List<ArtifactRepository> remoteRepos = new ArrayList<>();
    remoteRepos.add(localRepo);

    final Set<Artifact> artifacts = new HashSet<>();
    artifacts.add(artifact);

    final List<Dependency> listDepcy = new ArrayList<>();
    listDepcy.add(dep);

    when(project.getPlugin(anyString())).thenReturn(plugin);
    when(plugin.getDependencies()).thenReturn(listDepcy);
    when(artifact.getArtifactId()).thenReturn("artifactId");
    when(artifact.getGroupId()).thenReturn("groupId");
    when(artifact.getVersion()).thenReturn("SNAPSHOT");
    when(repoSystem.createDependencyArtifact(dep)).thenReturn(artifact);
    when(repoSystem.resolve(any(ArtifactResolutionRequest.class))).thenReturn(artifactResolResult);
    when(artifactResolResult.getArtifacts()).thenReturn(artifacts);
    when(project.getDependencyArtifacts()).thenReturn(artifacts);

    Util.checkClasspath(project, repoSystem, localRepo, remoteRepos);
    assertEquals(1, artifacts.size());
    assertEquals(1, remoteRepos.size());
    assertEquals(1, listDepcy.size());
}
 

private Artifact resolveRemoteWadlArtifact(Artifact artifact)
    throws MojoExecutionException {

    /**
     * First try to find the artifact in the reactor projects of the maven session.
     * So an artifact that is not yet built can be resolved
     */
    List<MavenProject> rProjects = mavenSession.getProjects();
    for (MavenProject rProject : rProjects) {
        if (artifact.getGroupId().equals(rProject.getGroupId())
            && artifact.getArtifactId().equals(rProject.getArtifactId())
            && artifact.getVersion().equals(rProject.getVersion())) {
            Set<Artifact> artifacts = rProject.getArtifacts();
            for (Artifact pArtifact : artifacts) {
                if ("wadl".equals(pArtifact.getType())) {
                    return pArtifact;
                }
            }
        }
    }

    ArtifactResolutionRequest request = new ArtifactResolutionRequest();
    request.setArtifact(artifact);
    request.setResolveRoot(true).setResolveTransitively(false);
    request.setServers(mavenSession.getRequest().getServers());
    request.setMirrors(mavenSession.getRequest().getMirrors());
    request.setProxies(mavenSession.getRequest().getProxies());
    request.setLocalRepository(mavenSession.getLocalRepository());
    request.setRemoteRepositories(mavenSession.getRequest().getRemoteRepositories());
    ArtifactResolutionResult result = repositorySystem.resolve(request);
    Artifact resolvedArtifact = result.getOriginatingArtifact();
    if (resolvedArtifact == null && !CollectionUtils.isEmpty(result.getArtifacts())) {
        resolvedArtifact = result.getArtifacts().iterator().next();
    }
    return resolvedArtifact;
}
 

@Test
public void testNoXmlAndNoHtmlNoDiffReport() throws MojoFailureException, MojoExecutionException {
	JApiCmpMojo mojo = new JApiCmpMojo();
	Version oldVersion = createVersion("groupId", "artifactId", "0.1.0");
	Version newVersion = createVersion("groupId", "artifactId", "0.1.1");
	Parameter parameter = new Parameter();
	parameter.setSkipHtmlReport(true);
	parameter.setSkipXmlReport(true);
	parameter.setSkipDiffReport(true);
	String reportDir = "noXmlAndNoHtmlNoDiffReport";
	PluginParameters pluginParameters = new PluginParameters(false, newVersion, oldVersion, parameter, null, Optional.of(Paths.get(System.getProperty("user.dir"), "target", reportDir).toFile()), Optional.<String>absent(), true, null, null, null, null);
	ArtifactResolver artifactResolver = mock(ArtifactResolver.class);
	ArtifactResolutionResult artifactResolutionResult = mock(ArtifactResolutionResult.class);
	Set<Artifact> artifactSet = new HashSet<>();
	Artifact resolvedArtifact = mock(Artifact.class);
	artifactSet.add(resolvedArtifact);
	when(resolvedArtifact.getFile()).thenReturn(Paths.get(System.getProperty("user.dir"), "target", "guava-18.0.jar").toFile());
	when(artifactResolutionResult.getArtifacts()).thenReturn(artifactSet);
	when(artifactResolver.resolve(Matchers.<ArtifactResolutionRequest>anyObject())).thenReturn(artifactResolutionResult);
	ArtifactFactory artifactFactory = mock(ArtifactFactory.class);
	when(artifactFactory.createArtifactWithClassifier(eq("groupId"), eq("artifactId"), eq("0.1.1"), anyString(), anyString())).thenReturn(mock(Artifact.class));
	MavenProject mavenProject = mock(MavenProject.class);
	when(mavenProject.getArtifact()).thenReturn(mock(Artifact.class));
	MavenParameters mavenParameters = new MavenParameters(new ArrayList<ArtifactRepository>(), artifactFactory, mock(ArtifactRepository.class), artifactResolver, mavenProject, mock(MojoExecution.class), "0.0.1", mock(ArtifactMetadataSource.class));
	mojo.executeWithParameters(pluginParameters, mavenParameters);
	assertThat(Files.exists(Paths.get(System.getProperty("user.dir"), "target", reportDir, "japicmp", "japicmp.diff")), is(false));
	assertThat(Files.exists(Paths.get(System.getProperty("user.dir"), "target", reportDir, "japicmp", "japicmp.xml")), is(false));
	assertThat(Files.exists(Paths.get(System.getProperty("user.dir"), "target", reportDir, "japicmp", "japicmp.html")), is(false));
}
 

@Test
public void testIgnoreMissingVersions() throws MojoFailureException, IOException, MojoExecutionException {
	JApiCmpMojo mojo = new JApiCmpMojo();
	Version oldVersion = createVersion("groupId", "artifactId", "0.1.0");
	Version newVersion = createVersion("groupId", "artifactId", "0.1.1");
	Parameter parameterParam = new Parameter();
	parameterParam.setIgnoreMissingNewVersion(true);
	parameterParam.setIgnoreMissingOldVersion(true);
	PluginParameters pluginParameters = new PluginParameters(false, newVersion, oldVersion, parameterParam, null, Optional.of(Paths.get(System.getProperty("user.dir"), "target", "simple").toFile()), Optional.<String>absent(), true, null, null, null, null);
	ArtifactResolver artifactResolver = mock(ArtifactResolver.class);
	ArtifactResolutionResult artifactResolutionResult = mock(ArtifactResolutionResult.class);
	Set<Artifact> artifactSet = new HashSet<>();
	when(artifactResolutionResult.getArtifacts()).thenReturn(artifactSet);
	when(artifactResolver.resolve(Matchers.<ArtifactResolutionRequest>anyObject())).thenReturn(artifactResolutionResult);
	ArtifactFactory artifactFactory = mock(ArtifactFactory.class);
	when(artifactFactory.createArtifactWithClassifier(eq("groupId"), eq("artifactId"), eq("0.1.1"), anyString(), anyString())).thenReturn(mock(Artifact.class));
	MojoExecution mojoExecution = mock(MojoExecution.class);
	String executionId = "ignoreMissingVersions";
	when(mojoExecution.getExecutionId()).thenReturn(executionId);
	MavenProject mavenProject = mock(MavenProject.class);
	when(mavenProject.getArtifact()).thenReturn(mock(Artifact.class));
	MavenParameters mavenParameters = new MavenParameters(new ArrayList<ArtifactRepository>(), artifactFactory, mock(ArtifactRepository.class), artifactResolver, mavenProject, mojoExecution, "0.0.1", mock(ArtifactMetadataSource.class));
	mojo.executeWithParameters(pluginParameters, mavenParameters);
	assertThat(Files.exists(Paths.get(System.getProperty("user.dir"), "target", "simple", "japicmp", executionId + ".diff")), is(false));
	assertThat(Files.exists(Paths.get(System.getProperty("user.dir"), "target", "simple", "japicmp", executionId + ".xml")), is(false));
	assertThat(Files.exists(Paths.get(System.getProperty("user.dir"), "target", "simple", "japicmp", executionId + ".html")), is(false));
}
 

/**
 * Creates a new <code>ModuleGenerator</code>.
 *
 * @param repositorySystem the given <code>RepositorySystem</code> is required to resolve the class path of the
 *                         examined maven projects
 * @since 2.0.0
 */
public ModuleGenerator(@Nonnull final RepositorySystem repositorySystem) {
    packagingHandlers.put("pom", new PomPackagingHandler());
    packagingHandlers.put("war", new WarPackagingHandler());
    artifactResolverCache = new SequentialLoadingCache<Artifact, File>(NonNullFunctions.toFunction(new NonNullFunction<Artifact, Optional<File>>() {
        @Nonnull
        @Override
        public Optional<File> apply(@Nonnull Artifact input) {
            if (!input.isResolved()) {
                ArtifactResolutionRequest request = new ArtifactResolutionRequest();
                request.setResolveRoot(true);
                request.setResolveTransitively(false);
                request.setArtifact(input);
                ArtifactResolutionResult artifactResolutionResult = repositorySystem.resolve(request);
                if (!artifactResolutionResult.isSuccess()) {
                    logger.warn("  Failed to resolve [{}]; some analyzers may not work properly.", getVersionedKeyFor(input));
                    return absent();
                }
            }
            File classPathElement = input.getFile();
            if (classPathElement == null) {
                logger.warn("  No valid path to [{}] found; some analyzers may not work properly.", getVersionedKeyFor(input));
                return absent();
            }
            return of(classPathElement);
        }
    }));
}
 

private void disableArtifactResolving() {
    when(this.repositorySystem.resolve(any(ArtifactResolutionRequest.class))).thenAnswer(new Answer<ArtifactResolutionResult>() {
        @Override
        public ArtifactResolutionResult answer(InvocationOnMock invocationOnMock) throws Throwable {
            ArtifactResolutionRequest request = (ArtifactResolutionRequest) invocationOnMock.getArguments()[0];
            ArtifactResolutionResult artifactResolutionResult = new ArtifactResolutionResult();
            artifactResolutionResult.addMissingArtifact(request.getArtifact());
            return artifactResolutionResult;
        }
    });
}
 

private void enableArtifactResolving() {
    reset(this.repositorySystem);
    when(this.repositorySystem.resolve(any(ArtifactResolutionRequest.class))).thenAnswer(new Answer<ArtifactResolutionResult>() {
        @Override
        public ArtifactResolutionResult answer(InvocationOnMock invocationOnMock) throws Throwable {
            ArtifactResolutionRequest request = (ArtifactResolutionRequest) invocationOnMock.getArguments()[0];
            request.getArtifact().setResolved(true);
            return new ArtifactResolutionResult();
        }
    });
}
 

private ClassLoader getProjectClassLoader() throws MojoExecutionException {
    try {
        // compiled classes
        List<String> classfiles = this.project.getCompileClasspathElements();
        if (this.scanTestClasses) {
            classfiles.addAll(this.project.getTestClasspathElements());
        }
        // classpath to url
        List<URL> classURLs = new ArrayList<>(classfiles.size());
        for (String classfile : classfiles) {
            classURLs.add(new File(classfile).toURI().toURL());
        }

        // dependency artifacts to url
        ArtifactResolutionRequest sharedreq = new ArtifactResolutionRequest().setResolveRoot(true)
                                                                             .setResolveTransitively(true)
                                                                             .setLocalRepository(this.session.getLocalRepository())
                                                                             .setRemoteRepositories(this.project.getRemoteArtifactRepositories());

        ArtifactRepository repository = this.session.getLocalRepository();
        Set<Artifact> artifacts = this.project.getDependencyArtifacts();
        for (Artifact artifact : artifacts) {
            if (!Artifact.SCOPE_TEST.equalsIgnoreCase(artifact.getScope())) {
                ArtifactResolutionRequest request = new ArtifactResolutionRequest(sharedreq).setArtifact(artifact);
                ArtifactResolutionResult result = this.repositorySystem.resolve(request);
                if (result.isSuccess()) {
                    File file = repository.find(artifact).getFile();
                    if (file != null && file.isFile() && file.canRead()) {
                        classURLs.add(file.toURI().toURL());
                    }
                }
            }
        }

        for (URL url : classURLs) {
            this.log.info("  * classpath: " + url);
        }

        return new URLClassLoader(classURLs.toArray(EMPTY_URLS), this.getClass().getClassLoader());
    } catch (Exception e) {
        this.log.error(e);
        throw new MojoExecutionException("Error while creating classloader", e);
    }
}
 

/** Resolve an artifact.
 *
 * @param request the definition of the resolution request.
 * @return the result.
 * @throws MojoExecutionException if the resolution cannot be done.
 * @since 0.8
 */
public ArtifactResolutionResult resolve(ArtifactResolutionRequest request) throws MojoExecutionException {
	return this.repositorySystem.resolve(request);
}