Examples with JsonReader com.google.gson.stream.JsonReader used on opensource projects

Example 46 with JsonReader

use of com.google.gson.stream.JsonReader in project cdap by caskdata.

the class JsonStructuredRecordDatumReader method decodeRecord.

@Override
protected StructuredRecord decodeRecord(Decoder decoder, Schema schema) throws IOException {
    StructuredRecord.Builder builder = StructuredRecord.builder(schema);
    JsonReader jsonReader = getJsonReader(decoder);
    jsonReader.beginObject();
    while (jsonReader.peek() != JsonToken.END_OBJECT) {
        Schema.Field field = schema.getField(jsonReader.nextName());
        if (field == null) {
            // Ignore unrecognized fields
            jsonReader.skipValue();
            continue;
        }
        builder.set(field.getName(), decode(decoder, field.getSchema()));
    }
    jsonReader.endObject();
    return builder.build();
}

Example 47 with JsonReader

use of com.google.gson.stream.JsonReader in project cdap by caskdata.

the class JsonStructuredRecordDatumReader method decodeArray.

@Override
protected Collection<?> decodeArray(Decoder decoder, Schema elementSchema) throws IOException {
    List<Object> array = new ArrayList<>();
    JsonReader jsonReader = getJsonReader(decoder);
    jsonReader.beginArray();
    while (jsonReader.peek() != JsonToken.END_ARRAY) {
        array.add(decode(decoder, elementSchema));
    }
    jsonReader.endArray();
    return array;
}

Example 48 with JsonReader

use of com.google.gson.stream.JsonReader in project cdap by caskdata.

the class StreamClient method getEvents.

/**
   * Reads events from a stream
   *
   * @param streamId ID of the stream
   * @param start Timestamp in milliseconds or now-xs format to start reading event from (inclusive)
   * @param end Timestamp in milliseconds or now-xs format for the last event to read (exclusive)
   * @param limit Maximum number of events to read
   * @param callback Callback to invoke for each stream event read. If the callback function returns {@code false}
   *                 upon invocation, it will stops the reading
   * @throws IOException If fails to read from stream
   * @throws StreamNotFoundException If the given stream does not exists
   */
public void getEvents(StreamId streamId, String start, String end, int limit, Function<? super StreamEvent, Boolean> callback) throws IOException, StreamNotFoundException, UnauthenticatedException {
    long startTime = TimeMathParser.parseTime(start, TimeUnit.MILLISECONDS);
    long endTime = TimeMathParser.parseTime(end, TimeUnit.MILLISECONDS);
    URL url = config.resolveNamespacedURLV3(streamId.getParent(), String.format("streams/%s/events?start=%d&end=%d&limit=%d", streamId.getStream(), startTime, endTime, limit));
    HttpURLConnection urlConn = (HttpURLConnection) url.openConnection();
    AccessToken accessToken = config.getAccessToken();
    if (accessToken != null) {
        urlConn.setRequestProperty(HttpHeaders.AUTHORIZATION, accessToken.getTokenType() + " " + accessToken.getValue());
    }
    if (urlConn instanceof HttpsURLConnection && !config.isVerifySSLCert()) {
        try {
            HttpRequests.disableCertCheck((HttpsURLConnection) urlConn);
        } catch (Exception e) {
        // TODO: Log "Got exception while disabling SSL certificate check for request.getURL()"
        }
    }
    try {
        if (urlConn.getResponseCode() == HttpURLConnection.HTTP_UNAUTHORIZED) {
            throw new UnauthenticatedException("Unauthorized status code received from the server.");
        }
        if (urlConn.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND) {
            throw new StreamNotFoundException(streamId);
        }
        if (urlConn.getResponseCode() == HttpURLConnection.HTTP_NO_CONTENT) {
            return;
        }
        // The response is an array of stream event object
        InputStream inputStream = urlConn.getInputStream();
        JsonReader jsonReader = new JsonReader(new InputStreamReader(inputStream, Charsets.UTF_8));
        jsonReader.beginArray();
        while (jsonReader.peek() != JsonToken.END_ARRAY) {
            Boolean result = callback.apply(GSON.<StreamEvent>fromJson(jsonReader, StreamEvent.class));
            if (result == null || !result) {
                break;
            }
        }
        drain(inputStream);
    // No need to close reader, the urlConn.disconnect in finally will close all underlying streams
    } finally {
        urlConn.disconnect();
    }
}

Example 49 with JsonReader

use of com.google.gson.stream.JsonReader in project Bookshelf by Darkhax-Minecraft.

the class PlayerUtils method getPlayerNameFromUUID.

/**
     * Attempts to get the username associated with a UUID from Mojang. If no username is
     * detected or an exception takes place, the exception message will be returned.
     *
     * @param id The UUID to search for.
     * @return The name of the player associated to that uuid.
     */
public static String getPlayerNameFromUUID(UUID uuid) {
    if (PROFILE_CACHE.containsValue(uuid)) {
        return PROFILE_CACHE.inverse().get(uuid);
    }
    String name = null;
    try {
        final BufferedReader reader = Resources.asCharSource(new URL("https://sessionserver.mojang.com/session/minecraft/profile/" + uuid.toString().replace("-", "")), StandardCharsets.UTF_8).openBufferedStream();
        final JsonReader json = new JsonReader(reader);
        json.beginObject();
        while (json.hasNext()) {
            if ("name".equals(json.nextName())) {
                name = json.nextString();
            } else {
                json.skipValue();
            }
        }
        json.endObject();
        json.close();
        reader.close();
    } catch (final Exception exception) {
        Constants.LOG.warn("Could not get name for " + uuid, exception);
        name = exception.getMessage();
    }
    return name;
}

Example 50 with JsonReader

use of com.google.gson.stream.JsonReader in project sling by apache.

the class HttpOsgiClient method findSourceReferences.

@Override
public List<SourceReference> findSourceReferences() throws OsgiClientException {
    GetMethod method = new GetMethod(repositoryInfo.appendPath("system/sling/tooling/sourceReferences.json"));
    HttpClient client = getHttpClient();
    try {
        int result = client.executeMethod(method);
        if (result != HttpStatus.SC_OK) {
            throw new HttpException("Got status code " + result + " for call to " + method.getURI());
        }
        Gson gson = new Gson();
        List<SourceReference> refs = new ArrayList<>();
        try (JsonReader jsonReader = new JsonReader(new InputStreamReader(method.getResponseBodyAsStream(), StandardCharsets.US_ASCII))) {
            jsonReader.beginArray();
            while (jsonReader.hasNext()) {
                if (jsonReader.nextName().equals("sourceReference")) {
                    SourceReferenceFromJson sourceReference = gson.fromJson(jsonReader, SourceReference.class);
                    if (sourceReference.isMavenType()) {
                        refs.add(sourceReference.getMavenSourceReference());
                    }
                } else {
                    jsonReader.skipValue();
                }
            }
            jsonReader.endArray();
            return refs;
        }
    } catch (IOException e) {
        throw new OsgiClientException(e);
    } finally {
        method.releaseConnection();
    }
}