Examples with TemplateEngine org.bndtools.templating.TemplateEngine used on opensource projects

Example 1 with TemplateEngine

use of org.bndtools.templating.TemplateEngine in project bndtools by bndtools.

the class ReposTemplateLoader method findTemplates.

@Override
public Promise<List<Template>> findTemplates(String templateType, final Reporter reporter) {
    String filterStr = String.format("(%s=%s)", NS_TEMPLATE, templateType);
    final Requirement requirement = new CapReqBuilder(NS_TEMPLATE).addDirective(Namespace.REQUIREMENT_FILTER_DIRECTIVE, filterStr).buildSyntheticRequirement();
    // Try to get the repositories and BundleLocator from the workspace
    List<Repository> workspaceRepos;
    BundleLocator tmpLocator;
    try {
        if (workspace == null)
            workspace = Central.getWorkspace();
        workspaceRepos = workspace.getPlugins(Repository.class);
        tmpLocator = new RepoPluginsBundleLocator(workspace.getRepositories());
    } catch (Exception e) {
        workspaceRepos = Collections.emptyList();
        tmpLocator = new DirectDownloadBundleLocator();
    }
    final BundleLocator locator = tmpLocator;
    // Setup the repos
    List<Repository> repos = new ArrayList<>(workspaceRepos.size() + 1);
    repos.addAll(workspaceRepos);
    addPreferenceConfiguredRepos(repos, reporter);
    // Generate a Promise<List<Template>> for each repository and add to an accumulator
    Promise<List<Template>> accumulator = Promises.resolved((List<Template>) new LinkedList<Template>());
    for (final Repository repo : repos) {
        final Deferred<List<Template>> deferred = new Deferred<>();
        final Promise<List<Template>> current = deferred.getPromise();
        accumulator = accumulator.then(new Success<List<Template>, List<Template>>() {

            @Override
            public Promise<List<Template>> call(Promise<List<Template>> resolved) throws Exception {
                final List<Template> prefix = resolved.getValue();
                return current.map(new Function<List<Template>, List<Template>>() {

                    @Override
                    public List<Template> apply(List<Template> t) {
                        return CollectionUtils.append(prefix, t);
                    }
                });
            }
        });
        executor.submit(new Runnable() {

            @Override
            public void run() {
                List<Template> templates = new LinkedList<>();
                Map<Requirement, Collection<Capability>> providerMap = repo.findProviders(Collections.singleton(requirement));
                if (providerMap != null) {
                    Collection<Capability> candidates = providerMap.get(requirement);
                    if (candidates != null) {
                        for (Capability cap : candidates) {
                            IdentityCapability idcap = ResourceUtils.getIdentityCapability(cap.getResource());
                            Object id = idcap.getAttributes().get(IdentityNamespace.IDENTITY_NAMESPACE);
                            Object ver = idcap.getAttributes().get(IdentityNamespace.CAPABILITY_VERSION_ATTRIBUTE);
                            try {
                                String engineName = (String) cap.getAttributes().get("engine");
                                if (engineName == null)
                                    engineName = "stringtemplate";
                                TemplateEngine engine = engines.get(engineName);
                                if (engine != null)
                                    templates.add(new CapabilityBasedTemplate(cap, locator, engine));
                                else
                                    reporter.error("Error loading template from resource '%s' version %s: no Template Engine available matching '%s'", id, ver, engineName);
                            } catch (Exception e) {
                                reporter.error("Error loading template from resource '%s' version %s: %s", id, ver, e.getMessage());
                            }
                        }
                    }
                }
                deferred.resolve(templates);
            }
        });
    }
    return accumulator;
}

Example 2 with TemplateEngine

use of org.bndtools.templating.TemplateEngine in project bndtools by bndtools.

the class BuiltInTemplate method generateOutputs.

@Override
public ResourceMap generateOutputs(Map<String, List<Object>> parameters, IProgressMonitor monitor) throws Exception {
    BundleContext context = bundle.getBundleContext();
    Collection<ServiceReference<TemplateEngine>> svcRefs = context.getServiceReferences(TemplateEngine.class, String.format("(name=%s)", engineName));
    if (svcRefs == null || svcRefs.isEmpty())
        throw new Exception(String.format("Unable to generate built-in template '%s': no Template Engine available matching '%s'", name, engineName));
    ServiceReference<TemplateEngine> svcRef = svcRefs.iterator().next();
    TemplateEngine engine = context.getService(svcRef);
    if (engine == null)
        throw new Exception(String.format("Unable to generate built-in template '%s': no Template Engine available matching '%s'", name, engineName));
    try {
        return engine.generateOutputs(inputResources, parameters, monitor);
    } finally {
        context.ungetService(svcRef);
    }
}