Example usage for com.google.gson GsonBuilder GsonBuilder

Introduction

In this page you can find the example usage for com.google.gson GsonBuilder GsonBuilder.

Prototype

public GsonBuilder()

Source Link

Document

Creates a GsonBuilder instance that can be used to build Gson with various configuration settings.

Usage

From source file:co.cask.cdap.gateway.handlers.AppFabricHttpHandler.java

License:Apache License

/**
 * Saves the {@link SessionInfo} to the filesystem.
 *
 * @param info to be saved.//from  w  w w.j a v a 2  s. c om
 * @return true if and only if successful; false otherwise.
 */
private boolean save(SessionInfo info, String accountId) {
    try {
        Gson gson = new GsonBuilder().registerTypeAdapter(Location.class, new LocationCodec(locationFactory))
                .create();
        Location outputDir = locationFactory.create(archiveDir + "/" + accountId);
        if (!outputDir.exists()) {
            return false;
        }
        final Location sessionInfoFile = outputDir.append("session.json");
        OutputSupplier<Writer> writer = new OutputSupplier<Writer>() {
            @Override
            public Writer getOutput() throws IOException {
                return new OutputStreamWriter(sessionInfoFile.getOutputStream(), "UTF-8");
            }
        };

        Writer w = writer.getOutput();
        try {
            gson.toJson(info, w);
        } finally {
            Closeables.closeQuietly(w);
        }
    } catch (IOException e) {
        LOG.warn(e.getMessage(), e);
        return false;
    }
    return true;
}

From source file:co.cask.cdap.gateway.handlers.ProgramLifecycleHttpHandler.java

License:Apache License

/**
 * Relays job-level and task-level information about a particular MapReduce program run.
 *///from   ww w.j  a  v  a 2 s. c  o  m
@GET
@Path("/apps/{app-id}/mapreduce/{mapreduce-id}/runs/{run-id}/info")
public void getMapReduceInfo(HttpRequest request, HttpResponder responder,
        @PathParam("namespace-id") String namespaceId, @PathParam("app-id") String appId,
        @PathParam("mapreduce-id") String mapreduceId, @PathParam("run-id") String runId)
        throws IOException, NotFoundException {
    Id.Program programId = Id.Program.from(namespaceId, appId, ProgramType.MAPREDUCE, mapreduceId);
    Id.Run run = new Id.Run(programId, runId);
    ApplicationSpecification appSpec = store.getApplication(programId.getApplication());
    if (appSpec == null) {
        throw new NotFoundException(programId.getApplication());
    }
    if (!appSpec.getMapReduce().containsKey(mapreduceId)) {
        throw new NotFoundException(programId);
    }
    RunRecordMeta runRecordMeta = store.getRun(programId, runId);
    if (runRecordMeta == null) {
        throw new NotFoundException(run);
    }

    MRJobInfo mrJobInfo = mrJobInfoFetcher.getMRJobInfo(run);

    mrJobInfo.setState(runRecordMeta.getStatus().name());
    // Multiple startTs / endTs by 1000, to be consistent with Task-level start/stop times returned by JobClient
    // in milliseconds. RunRecord returns seconds value.
    mrJobInfo.setStartTime(TimeUnit.SECONDS.toMillis(runRecordMeta.getStartTs()));
    Long stopTs = runRecordMeta.getStopTs();
    if (stopTs != null) {
        mrJobInfo.setStopTime(TimeUnit.SECONDS.toMillis(stopTs));
    }

    // JobClient (in DistributedMRJobInfoFetcher) can return NaN as some of the values, and GSON otherwise fails
    Gson gson = new GsonBuilder().serializeSpecialFloatingPointValues().create();
    responder.sendJson(HttpResponseStatus.OK, mrJobInfo, mrJobInfo.getClass(), gson);
}

From source file:co.cask.cdap.internal.app.ApplicationSpecificationAdapter.java

License:Apache License

public static ApplicationSpecificationAdapter create(SchemaGenerator generator) {
    return new ApplicationSpecificationAdapter(generator, addTypeAdapters(new GsonBuilder()).create());
}

From source file:co.cask.cdap.internal.app.deploy.InMemoryConfigurator.java

License:Apache License

private <T extends Config> String getSpecJson(Application<T> app, final String configString)
        throws IllegalAccessException, InstantiationException, IOException {

    File tempDir = DirUtils.createTempDir(baseUnpackDir);
    // This Gson cannot be static since it is used to deserialize user class.
    // Gson will keep a static map to class, hence will leak the classloader
    Gson gson = new GsonBuilder().registerTypeAdapterFactory(new CaseInsensitiveEnumTypeAdapterFactory())
            .create();//w w w .j  av  a  2 s.co  m
    // Now, we call configure, which returns application specification.
    DefaultAppConfigurer configurer;
    try (PluginInstantiator pluginInstantiator = new PluginInstantiator(cConf, app.getClass().getClassLoader(),
            tempDir)) {
        configurer = new DefaultAppConfigurer(appNamespace, artifactId, app, configString, artifactRepository,
                pluginInstantiator);
        T appConfig;
        Type configType = Artifacts.getConfigType(app.getClass());
        if (Strings.isNullOrEmpty(configString)) {
            //noinspection unchecked
            appConfig = ((Class<T>) configType).newInstance();
        } else {
            try {
                appConfig = gson.fromJson(configString, configType);
            } catch (JsonSyntaxException e) {
                throw new IllegalArgumentException(
                        "Invalid JSON configuration was provided. Please check the syntax.", e);
            }
        }

        app.configure(configurer, new DefaultApplicationContext<>(appConfig));
    } finally {
        try {
            DirUtils.deleteDirectoryContents(tempDir);
        } catch (IOException e) {
            LOG.warn("Exception raised when deleting directory {}", tempDir, e);
        }
    }
    ApplicationSpecification specification = configurer.createSpecification();

    // Convert the specification to JSON.
    // We write the Application specification to output file in JSON format.
    // TODO: The SchemaGenerator should be injected
    return ApplicationSpecificationAdapter.create(new ReflectionSchemaGenerator()).toJson(specification);
}

From source file:co.cask.cdap.internal.app.runtime.artifact.ArtifactStore.java

License:Apache License

@Inject
ArtifactStore(final DatasetFramework datasetFramework, NamespacedLocationFactory namespacedLocationFactory,
        LocationFactory locationFactory, TransactionExecutorFactory txExecutorFactory) {
    this.locationFactory = locationFactory;
    this.namespacedLocationFactory = namespacedLocationFactory;
    this.gson = new GsonBuilder().registerTypeAdapter(Schema.class, new SchemaTypeAdapter())
            .registerTypeAdapter(ArtifactRange.class, new ArtifactRangeCodec()).create();
    this.metaTable = Transactional.of(txExecutorFactory, new Supplier<DatasetContext<Table>>() {
        @Override/*ww w  .  j  av a2s  .co m*/
        public DatasetContext<Table> get() {
            try {
                return DatasetContext.of((Table) DatasetsUtil.getOrCreateDataset(datasetFramework, META_ID,
                        Table.class.getName(), META_PROPERTIES, DatasetDefinition.NO_ARGUMENTS, null));
            } catch (Exception e) {
                // there's nothing much we can do here
                throw Throwables.propagate(e);
            }
        }
    });
}

From source file:co.cask.cdap.notifications.service.AbstractNotificationService.java

License:Apache License

protected Gson createGson() {
    return new GsonBuilder().enableComplexMapKeySerialization().create();
}

From source file:co.cask.cdap.passport.http.client.PassportClient.java

License:Apache License

/**
 * Get List of VPC for the apiKey./*  ww w .j av  a2s .co  m*/
 * @return Instance of {@code AccountProvider}
 * */
public AccountProvider<Account> getAccount(String apiKey) {
    Preconditions.checkNotNull(apiKey, "ApiKey cannot be null");

    try {
        Account account = accountCache.getIfPresent(apiKey);
        if (account == null) {
            String data = httpGet(API_BASE + "whois", apiKey);
            if (data != null) {
                Gson gson = new GsonBuilder()
                        .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES).create();
                account = gson.fromJson(data, Account.class);
                accountCache.put(apiKey, account);
                return new AccountProvider<Account>(account);
            }
        } else {
            return new AccountProvider<Account>(account);
        }
        // This is a hack for overriding accountId type to String.
        // Ideally Account should use String type for account id instead
        return new AccountProvider<Account>(null);
    } catch (Exception e) {
        throw new RuntimeException(e.getMessage());
    }
}

From source file:co.cask.cdap.passport.meta.Account.java

License:Apache License

/**
 * Deserialize Account from jsonString.// w w  w  . ja  va  2s .co  m
 * @param jsonString json string containing account info
 * @return {@code Account}
 */
public static Account fromString(String jsonString) {
    Gson gson = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES).create();
    return gson.fromJson(jsonString, Account.class);
}

From source file:co.cask.cdap.passport.meta.Account.java

License:Apache License

/**
 * Serialize account into json string. The field names will be lowercase with underscores where captialized.
 * @return Json serialized String representing account
 *///w  ww  . j  a  v a  2 s  .  co  m
@Override
public String toString() {
    Gson gson = new GsonBuilder().setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES).create();
    return gson.toJson(this);

}

From source file:co.cask.cdap.ui.ConfigurationJsonTool.java

License:Apache License

public static void exportToJson(Configuration configuration, Appendable output) {
    // Set the log-level of the Configuration logger to ERROR. We don't want warning of deprecated key.
    Level oldLevel = setConfigurationLogLevel(Level.ERROR);

    Map<String, String> map = Maps.newHashMapWithExpectedSize(configuration.size());
    for (Map.Entry<String, String> entry : configuration) {
        map.put(entry.getKey(), entry.getValue());
    }/* w  w w .  j  a v a  2  s .com*/
    new GsonBuilder().setPrettyPrinting().create().toJson(map, output);

    // Restore the log level
    setConfigurationLogLevel(oldLevel);
}