Examples with Promise org.osgi.util.promise.Promise used on opensource projects

Example 1 with Promise

use of org.osgi.util.promise.Promise in project bnd by bndtools.

the class P2Indexer method readRepository.

private Repository readRepository() throws Exception {
    P2Impl p2 = new P2Impl(client, this.url, Processor.getExecutor());
    List<Artifact> artifacts = p2.getArtifacts();
    List<Promise<Resource>> fetched = new ArrayList<>(artifacts.size());
    Set<URI> visitedURIs = new HashSet<>(artifacts.size());
    Set<ArtifactID> visitedArtifacts = new HashSet<>(artifacts.size());
    Map<ArtifactID, Resource> knownResources = new HashMap<>();
    if (getBridge() != null) {
        for (Capability capability : getBridge().getRepository().findProviders(singleton(MD5_REQUIREMENT)).get(MD5_REQUIREMENT)) {
            Resource resource = capability.getResource();
            IdentityCapability identity = ResourceUtils.getIdentityCapability(resource);
            ArtifactID artifact = new ArtifactID(identity.osgi_identity(), identity.version(), (String) capability.getAttributes().get(MD5_ATTRIBUTE));
            knownResources.put(artifact, resource);
        }
    }
    for (final Artifact a : artifacts) {
        if (!visitedURIs.add(a.uri))
            continue;
        if (a.md5 != null) {
            ArtifactID id = new ArtifactID(a.id, toVersion(a.version), a.md5);
            if (!visitedArtifacts.add(id))
                continue;
            if (knownResources.containsKey(id)) {
                fetched.add(Promises.resolved(knownResources.get(id)));
                continue;
            }
        }
        Promise<Resource> promise = client.build().useCache(MAX_STALE).async(a.uri.toURL()).map(new Function<File, Resource>() {

            @Override
            public Resource apply(File file) {
                try {
                    ResourceBuilder rb = new ResourceBuilder();
                    rb.addFile(file, a.uri);
                    if (a.md5 != null)
                        rb.addCapability(new CapabilityBuilder(P2_CAPABILITY_NAMESPACE).addAttribute(MD5_ATTRIBUTE, a.md5));
                    return rb.build();
                } catch (Exception e) {
                    logger.debug("{}: Failed to create resource for %s from {}", name, a, file, e);
                    return RECOVERY;
                }
            }
        }).recover(new Function<Promise<?>, Resource>() {

            @Override
            public Resource apply(Promise<?> failed) {
                try {
                    logger.debug("{}: Failed to create resource for {}", name, a, failed.getFailure());
                } catch (InterruptedException e) {
                // impossible
                }
                return RECOVERY;
            }
        });
        fetched.add(promise);
    }
    Promise<List<Resource>> all = Promises.all(fetched);
    return all.map(new Function<List<Resource>, ResourcesRepository>() {

        @Override
        public ResourcesRepository apply(List<Resource> resources) {
            ResourcesRepository rr = new ResourcesRepository();
            for (Resource resource : resources) {
                if (resource != RECOVERY) {
                    rr.add(resource);
                }
            }
            return rr;
        }
    }).getValue();
}

Example 2 with Promise

use of org.osgi.util.promise.Promise in project bnd by bndtools.

the class FileSetRepository method readFiles.

private Promise<BridgeRepository> readFiles() {
    List<Promise<Resource>> promises = new ArrayList<>(getFiles().size());
    for (File file : getFiles()) {
        promises.add(parse(Promises.resolved(file)));
    }
    Promise<List<Resource>> all = Promises.all(promises);
    return all.map(new Function<List<Resource>, BridgeRepository>() {

        @Override
        public BridgeRepository apply(List<Resource> resources) {
            try {
                ResourcesRepository rr = new ResourcesRepository();
                for (Resource r : resources) {
                    if (r != null) {
                        logger.debug("{}: adding resource {}", getName(), r);
                        rr.add(r);
                    }
                }
                return new BridgeRepository(rr);
            } catch (Exception e) {
                throw Exceptions.duck(e);
            }
        }
    });
}

Example 3 with Promise

use of org.osgi.util.promise.Promise in project bnd by bndtools.

the class IndexFile method sync.

private void sync() throws Exception {
    List<Promise<Void>> sync = new ArrayList<>(promises.size());
    for (Iterator<Entry<Archive, Promise<File>>> i = promises.entrySet().iterator(); i.hasNext(); ) {
        Entry<Archive, Promise<File>> entry = i.next();
        final Archive archive = entry.getKey();
        Promise<File> promise = entry.getValue();
        i.remove();
        sync.add(promise.<Void>then(null, new Failure() {

            @Override
            public void fail(Promise<?> resolved) throws Exception {
                reporter.exception(resolved.getFailure(), "Failed to sync %s", archive);
            }
        }));
    }
    // block until all promises resolved
    Promises.all(sync).getFailure();
}

Example 4 with Promise

use of org.osgi.util.promise.Promise 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);
    // Map List<Repository> to Promise<List<Template>>
    Promise<List<Template>> promise = repos.stream().map(repo -> promiseFactory.submit(() -> {
        Map<Requirement, Collection<Capability>> providerMap = repo.findProviders(Collections.singleton(requirement));
        return providerMap.get(requirement).stream().map(cap -> {
            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)
                    return new CapabilityBasedTemplate(cap, locator, engine);
                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());
            }
            return null;
        }).filter(Objects::nonNull).collect(toList());
    })).collect(toPromise(promiseFactory)).map(ll -> ll.stream().flatMap(List::stream).collect(toList()));
    return promise;
}

Example 5 with Promise

use of org.osgi.util.promise.Promise in project bndtools by bndtools.

the class GitHubWorkspaceTemplateLoader method findTemplates.

@Override
public Promise<List<Template>> findTemplates(String type, Reporter reporter) {
    if (!TEMPLATE_TYPE.equals(type)) {
        return promiseFactory.resolved(Collections.emptyList());
    }
    GitHub gitHub = new GitHub(cache, promiseFactory);
    Parameters githubRepos = new GitRepoPreferences().getGithubRepos();
    return githubRepos.entrySet().stream().map(entry -> {
        String repo = GitRepoPreferences.removeDuplicateMarker(entry.getKey());
        Attrs attribs = entry.getValue();
        return gitHub.loadRepoDetails(repo).map(detailsDTO -> {
            if (detailsDTO.clone_url == null)
                throw new IllegalArgumentException("Missing clone URL");
            // Generate icon URI from the owner avatar. The s=16 parameter
            // is added to select a 16x16 icon.
            URI avatarUri = null;
            if (detailsDTO.owner.avatar_url != null)
                avatarUri = URI.create(detailsDTO.owner.avatar_url + "&s=16");
            String name = attribs.get("name");
            if (name == null)
                name = repo;
            String branch = attribs.get("branch");
            final GitCloneTemplateParams params = new GitCloneTemplateParams();
            params.cloneUrl = detailsDTO.clone_url;
            if (branch != null)
                params.branch = branch;
            else
                params.branch = "origin/" + detailsDTO.default_branch;
            params.name = name;
            params.category = "GitHub";
            params.iconUri = avatarUri;
            if (detailsDTO.html_url != null) {
                params.helpUri = createHelpUri(repo, detailsDTO.html_url);
            }
            return (Template) new GitCloneTemplate(params);
        });
    }).collect(toPromise(promiseFactory));
}