Examples with TypeToken com.google.common.reflect.TypeToken used on opensource projects

Example 51 with TypeToken

use of com.google.common.reflect.TypeToken in project cdap by caskdata.

the class MonitorClient method listSystemServices.

/**
   * Lists all system services.
   *
   * @return list of {@link SystemServiceMeta}s.
   * @throws IOException if a network error occurred
   * @throws UnauthenticatedException if the request is not authorized successfully in the gateway server
   */
public List<SystemServiceMeta> listSystemServices() throws IOException, UnauthenticatedException, UnauthorizedException {
    URL url = config.resolveURL("system/services");
    HttpResponse response = restClient.execute(HttpMethod.GET, url, config.getAccessToken());
    return ObjectResponse.fromJsonBody(response, new TypeToken<List<SystemServiceMeta>>() {
    }).getResponseObject();
}

Example 52 with TypeToken

use of com.google.common.reflect.TypeToken in project cdap by caskdata.

the class MonitorClient method getAllSystemServiceStatus.

/**
   * Gets the status of all system services.
   *
   * @return map from service name to service status
   * @throws IOException if a network error occurred
   * @throws UnauthenticatedException if the request is not authorized successfully in the gateway server
   */
public Map<String, String> getAllSystemServiceStatus() throws IOException, UnauthenticatedException, UnauthorizedException {
    URL url = config.resolveURL("system/services/status");
    HttpResponse response = restClient.execute(HttpMethod.GET, url, config.getAccessToken());
    return ObjectResponse.fromJsonBody(response, new TypeToken<Map<String, String>>() {
    }).getResponseObject();
}

Example 53 with TypeToken

use of com.google.common.reflect.TypeToken in project cdap by caskdata.

the class PreferencesClient method getInstancePreferences.

/**
   * Returns the Preferences stored at the Instance Level.
   *
   * @return map of key-value pairs
   * @throws IOException if a network error occurred
   * @throws UnauthenticatedException if the request is not authorized successfully in the gateway server
   */
public Map<String, String> getInstancePreferences() throws IOException, UnauthenticatedException, UnauthorizedException {
    URL url = config.resolveURLV3("preferences");
    HttpResponse response = restClient.execute(HttpMethod.GET, url, config.getAccessToken());
    return ObjectResponse.fromJsonBody(response, new TypeToken<Map<String, String>>() {
    }).getResponseObject();
}

Example 54 with TypeToken

use of com.google.common.reflect.TypeToken in project cdap by caskdata.

the class ObjectMappedTableDataset method getReflectionRowReader.

@SuppressWarnings("unchecked")
private ReflectionRowReader<T> getReflectionRowReader() {
    if (rowReader == null) {
        try {
            // this can throw a runtime exception from a ClassNotFoundException
            Type type = typeRepresentation.toType();
            rowReader = new ReflectionRowReader<>(objectSchema, (TypeToken<T>) TypeToken.of(type));
        } catch (RuntimeException e) {
            String missingClass = isClassNotFoundException(e);
            if (missingClass != null) {
                LOG.error("Cannot load dataset because class {} could not be found. This is probably because the " + "type parameter of the dataset is not present in the dataset's jar file. See the developer " + "guide for more information.", missingClass);
            }
            throw e;
        }
    }
    return rowReader;
}

Example 55 with TypeToken

use of com.google.common.reflect.TypeToken in project cdap by caskdata.

the class BaseHiveExploreService method previewResults.

@Override
public List<QueryResult> previewResults(QueryHandle handle) throws ExploreException, HandleNotFoundException, SQLException {
    startAndWait();
    if (inactiveHandleCache.getIfPresent(handle) != null) {
        throw new HandleNotFoundException("Query is inactive.", true);
    }
    OperationInfo operationInfo = getActiveOperationInfo(handle);
    Lock previewLock = operationInfo.getPreviewLock();
    previewLock.lock();
    try {
        File previewFile = operationInfo.getPreviewFile();
        if (previewFile != null) {
            try {
                Reader reader = com.google.common.io.Files.newReader(previewFile, Charsets.UTF_8);
                try {
                    return GSON.fromJson(reader, new TypeToken<List<QueryResult>>() {
                    }.getType());
                } finally {
                    Closeables.closeQuietly(reader);
                }
            } catch (FileNotFoundException e) {
                LOG.error("Could not retrieve preview result file {}", previewFile, e);
                throw new ExploreException(e);
            }
        }
        try {
            // Create preview results for query
            previewFile = new File(previewsDir, handle.getHandle());
            try (FileWriter fileWriter = new FileWriter(previewFile)) {
                List<QueryResult> results = fetchNextResults(handle, PREVIEW_COUNT);
                GSON.toJson(results, fileWriter);
                operationInfo.setPreviewFile(previewFile);
                return results;
            }
        } catch (IOException e) {
            LOG.error("Could not write preview results into file", e);
            throw new ExploreException(e);
        }
    } finally {
        previewLock.unlock();
    }
}