Example usage for com.google.gson.stream JsonReader JsonReader

Introduction

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

Prototype

public JsonReader(Reader in) 

Source Link

Document

Creates a new instance that reads a JSON-encoded stream from in .

Usage

From source file:org.apache.accumulo.core.clientImpl.bulk.LoadMappingIterator.java

License:Apache License

LoadMappingIterator(TableId tableId, InputStream loadMapFile) throws IOException {
    this.tableId = tableId;
    this.reader = new JsonReader(new BufferedReader(new InputStreamReader(loadMapFile, UTF_8)));
    this.reader.beginArray();
}

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From source file:org.apache.airavata.workflow.core.parser.JsonWorkflowParser.java

License:Apache License

public JsonWorkflowParser(InputStreamReader inputStreamReader) {
    this(new JsonReader(inputStreamReader));
}

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From source file:org.apache.ambari.funtest.server.AmbariHttpWebRequest.java

License:Apache License

@SuppressWarnings("deprecation")
private RuntimeException createRuntimeException(HttpException httpException) {
    String message = httpException.getMessage();
    try {/*from ww w . ja  va 2 s . co  m*/
        JsonElement jsonElement = new JsonParser()
                .parse(new JsonReader(new StringReader(httpException.getMessage())));
        if (jsonElement != null && jsonElement.getAsJsonObject().has("message")) {
            message = jsonElement.getAsJsonObject().get("message").getAsString();
        }
    } catch (Throwable t) {
    }
    if (httpException.getReasonCode() != HttpStatus.SC_OK) {
        message = httpException.getReasonCode() + " " + httpException.getReason() + ": " + message;
    }
    return new RuntimeException(message, httpException);
}

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From source file:org.apache.ambari.funtest.server.utils.RestApiUtils.java

License:Apache License

/**
 * Executes a web request and throws an exception if the status code is incorrect.
 *
 * @param request/*w  w  w  . j a  v a 2  s . c o m*/
 * @return
 * @throws Exception
 */
public static JsonElement executeRequest(WebRequest request) throws Exception {
    WebResponse response = request.getResponse();
    int responseCode = response.getStatusCode();
    String responseBody = response.getContent();

    if (responseCode != HttpStatus.SC_OK && responseCode != HttpStatus.SC_CREATED
            && responseCode != HttpStatus.SC_ACCEPTED) {
        throw new RuntimeException(String.format("%d:%s", responseCode, responseBody));
    }

    return new JsonParser().parse(new JsonReader(new StringReader(responseBody)));
}

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From source file:org.apache.ambari.server.controller.metrics.RestMetricsPropertyProvider.java

License:Apache License

/**
 * Extracts requested properties from a given JSON input stream into
 * resource.//from   w w w.j a  va  2  s.c  o  m
 *
 * @param jsonStream           input stream that contains JSON
 * @param requestedPropertyIds a set of property IDs
 *                             that should be fetched for this URL
 * @param resource             all extracted values are placed into resource
 */
private void extractValuesFromJSON(InputStream jsonStream, Set<String> requestedPropertyIds, Resource resource,
        Map<String, PropertyInfo> propertyInfos) throws IOException {
    Gson gson = new Gson();
    Type type = new TypeToken<Map<Object, Object>>() {
    }.getType();
    JsonReader jsonReader = new JsonReader(new BufferedReader(new InputStreamReader(jsonStream)));
    Map<String, String> jsonMap = gson.fromJson(jsonReader, type);
    for (String requestedPropertyId : requestedPropertyIds) {
        PropertyInfo propertyInfo = propertyInfos.get(requestedPropertyId);
        String metricsPath = propertyInfo.getPropertyId();
        String documentPath = extractDocumentPath(metricsPath);
        String[] docPath = documentPath.split(DOCUMENT_PATH_SEPARATOR);
        Map<String, String> subMap = jsonMap;
        for (int i = 0; i < docPath.length; i++) {
            String pathElement = docPath[i];
            if (!subMap.containsKey(pathElement)) {
                String message = String.format("Can not fetch %dth element of document path (%s) "
                        + "from json. Wrong metrics path: %s", i, pathElement, metricsPath);
                throw new IOException(message);
            }
            Object jsonSubElement = jsonMap.get(pathElement);
            if (i == docPath.length - 1) { // Reached target document section
                // Extract property value
                resource.setProperty(requestedPropertyId, jsonSubElement);
            } else { // Navigate to relevant document section
                subMap = gson.fromJson((JsonElement) jsonSubElement, type);
            }
        }
    }
}

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From source file:org.apache.ambari.view.hive.resources.uploads.parsers.json.JSONParser.java

License:Apache License

public JSONParser(Reader reader, ParseOptions parseOptions) throws IOException {
    super(reader, parseOptions);
    this.jsonReader = new JsonReader(this.reader);
    JSONIterator = new JSONIterator(this.jsonReader);
    iterator = new RowIterator(JSONIterator);
}

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From source file:org.apache.ambari.view.slider.rest.client.BaseHttpClient.java

License:Apache License

@SuppressWarnings("deprecation")
public JsonElement doGetJson(String url, String path) throws HttpException, IOException {
    GetMethod get = new GetMethod(url + path);
    if (isNeedsAuthentication()) {
        get.setDoAuthentication(true);/*w  ww .java  2s .  com*/
    }
    int executeMethod = getHttpClient().executeMethod(get);
    switch (executeMethod) {
    case HttpStatus.SC_OK:
        JsonElement jsonElement = new JsonParser()
                .parse(new JsonReader(new InputStreamReader(get.getResponseBodyAsStream())));
        return jsonElement;
    case HttpStatus.SC_NOT_FOUND:
        return null;
    default:
        HttpException httpException = new HttpException(get.getResponseBodyAsString());
        httpException.setReason(HttpStatus.getStatusText(executeMethod));
        httpException.setReasonCode(executeMethod);
        throw httpException;
    }
}

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From source file:org.apache.axis2.json.gson.JsonBuilder.java

License:Apache License

public OMElement processDocument(InputStream inputStream, String s, MessageContext messageContext)
        throws AxisFault {
    messageContext.setProperty(JsonConstant.IS_JSON_STREAM, true);
    JsonReader jsonReader;//from   w  w  w .  j  a  va2s .c om
    String charSetEncoding = null;
    if (inputStream != null) {
        try {
            charSetEncoding = (String) messageContext
                    .getProperty(Constants.Configuration.CHARACTER_SET_ENCODING);
            jsonReader = new JsonReader(new InputStreamReader(inputStream, charSetEncoding));
            GsonXMLStreamReader gsonXMLStreamReader = new GsonXMLStreamReader(jsonReader);
            messageContext.setProperty(JsonConstant.GSON_XML_STREAM_READER, gsonXMLStreamReader);
        } catch (UnsupportedEncodingException e) {
            throw new AxisFault(charSetEncoding + " encoding is may not supported by json inputStream ", e);
        }
    } else {
        if (log.isDebugEnabled()) {
            log.debug("Inputstream is null, This is possible with GET request");
        }
    }
    // dummy envelop
    SOAPFactory soapFactory = OMAbstractFactory.getSOAP11Factory();
    return soapFactory.getDefaultEnvelope();
}

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From source file:org.apache.camel.component.salesforce.internal.processor.JsonRestProcessor.java

License:Apache License

@Override
protected void processResponse(Exchange exchange, InputStream responseEntity, SalesforceException ex,
        AsyncCallback callback) {/* www  . j  a v a 2s  . com*/
    // process JSON response for TypeReference
    try {
        // do we need to un-marshal a response

        if (responseEntity != null) {
            JsonReader reader = new JsonReader(new InputStreamReader(responseEntity, "UTF-8"));
            Gson gson = new GsonBuilder().create();

            Object response = null;

            Class<?> responseClass = exchange.getProperty(RESPONSE_CLASS, Class.class);
            if (responseClass != null) {

                response = gson.fromJson(reader, responseClass);

                //   System.out.println("response " + response);*/
                //      response = objectMapper.readValue(responseEntity, responseClass);
            } else {
                TypeReference<?> responseType = exchange.getProperty(RESPONSE_TYPE, TypeReference.class);
                if (responseType != null) {
                    //   System.out.println("responseType != null");
                    response = gson.fromJson(reader, responseClass);
                    //response = objectMapper.readValue(responseEntity, responseType);
                } else {
                    //   System.out.println("responseType == null");
                    // return the response as a stream, for getBlobField
                    response = responseEntity;
                }
            }
            exchange.getOut().setBody(response);
        } else {
            exchange.setException(ex);
        }
        // copy headers and attachments
        exchange.getOut().getHeaders().putAll(exchange.getIn().getHeaders());
        exchange.getOut().getAttachments().putAll(exchange.getIn().getAttachments());
    } catch (IOException e) {
        String msg = "Error parsing JSON response: " + e.getMessage();
        exchange.setException(new SalesforceException(msg, e));
    } catch (Exception e) {

        e.printStackTrace();
    }

    finally {
        // cleanup temporary exchange headers
        exchange.removeProperty(RESPONSE_CLASS);
        exchange.removeProperty(RESPONSE_TYPE);

        // consume response entity
        try {
            if (responseEntity != null) {
                responseEntity.close();
            }
        } catch (IOException ignored) {
        }

        // notify callback that exchange is done
        callback.done(false);
    }

}

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From source file:org.apache.hadoop.dynamodb.importformat.ImportInputFormat.java

License:Open Source License

/**
 * An example manifest file looks like/*from   ww w .  j  a v a  2s  . c  o  m*/
 *
 * {"name":"DynamoDB-export","version":3, "entries":[
 * {"url":"s3://path/to/object/92dd1414-a049-4c68-88fb-a23acd44907e","mandatory":true},
 * {"url":"s3://path/to/object/ba3f3535-7aa1-4f97-a530-e72938bf4b76","mandatory":true} ]}
 */
// @formatter:on
private List<InputSplit> parseManifest(FileSystem fs, Path manifestPath, JobConf job) throws IOException {
    List<InputSplit> splits = null;

    FSDataInputStream fp = fs.open(manifestPath);
    JsonReader reader = new JsonReader(new InputStreamReader(fp, Charsets.UTF_8));

    reader.beginObject();
    while (reader.hasNext()) {
        String name = reader.nextName();
        switch (name) {
        case VERSION_JSON_KEY:
            job.set(DynamoDBConstants.EXPORT_FORMAT_VERSION, String.valueOf(reader.nextInt()));
            break;
        case ENTRIES_JSON_KEY:
            splits = readEntries(reader, job);
            break;
        default:
            log.info("Skipping a JSON key in the manifest file: " + name);
            reader.skipValue();
            break;
        }
    }
    reader.endObject();

    if (splits == null) {
        return Collections.emptyList();
    }
    return splits;
}

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