Examples with ObjectMapper com.fasterxml.jackson.databind.ObjectMapper used on opensource projects

Example 26 with ObjectMapper

use of com.fasterxml.jackson.databind.ObjectMapper in project hadoop by apache.

the class SlowPeerTracker method getJson.

/**
   * Retrieve all valid reports as a JSON string.
   * @return serialized representation of valid reports. null if
   *         serialization failed.
   */
public String getJson() {
    Collection<ReportForJson> validReports = getJsonReports(MAX_NODES_TO_REPORT);
    ObjectMapper objectMapper = new ObjectMapper();
    try {
        return objectMapper.writeValueAsString(validReports);
    } catch (JsonProcessingException e) {
        // Failed to serialize. Don't log the exception call stack.
        LOG.debug("Failed to serialize statistics" + e);
        return null;
    }
}

Example 27 with ObjectMapper

use of com.fasterxml.jackson.databind.ObjectMapper in project hadoop by apache.

the class JHEventHandlerForSigtermTest method testCountersToJSONEmpty.

@Test(timeout = 50000)
public void testCountersToJSONEmpty() throws Exception {
    JobHistoryEventHandler jheh = new JobHistoryEventHandler(null, 0);
    Counters counters = null;
    JsonNode jsonNode = JobHistoryEventUtils.countersToJSON(counters);
    String jsonStr = new ObjectMapper().writeValueAsString(jsonNode);
    String expected = "[]";
    Assert.assertEquals(expected, jsonStr);
    counters = new Counters();
    jsonNode = JobHistoryEventUtils.countersToJSON(counters);
    jsonStr = new ObjectMapper().writeValueAsString(jsonNode);
    expected = "[]";
    Assert.assertEquals(expected, jsonStr);
    counters.addGroup("DOCTORS", "Incarnations of the Doctor");
    jsonNode = JobHistoryEventUtils.countersToJSON(counters);
    jsonStr = new ObjectMapper().writeValueAsString(jsonNode);
    expected = "[{\"NAME\":\"DOCTORS\",\"DISPLAY_NAME\":\"Incarnations of the " + "Doctor\",\"COUNTERS\":[]}]";
    Assert.assertEquals(expected, jsonStr);
}

Example 28 with ObjectMapper

use of com.fasterxml.jackson.databind.ObjectMapper in project hadoop by apache.

the class JHEventHandlerForSigtermTest method testCountersToJSON.

@Test(timeout = 50000)
public void testCountersToJSON() throws Exception {
    JobHistoryEventHandler jheh = new JobHistoryEventHandler(null, 0);
    Counters counters = new Counters();
    CounterGroup group1 = counters.addGroup("DOCTORS", "Incarnations of the Doctor");
    group1.addCounter("PETER_CAPALDI", "Peter Capaldi", 12);
    group1.addCounter("MATT_SMITH", "Matt Smith", 11);
    group1.addCounter("DAVID_TENNANT", "David Tennant", 10);
    CounterGroup group2 = counters.addGroup("COMPANIONS", "Companions of the Doctor");
    group2.addCounter("CLARA_OSWALD", "Clara Oswald", 6);
    group2.addCounter("RORY_WILLIAMS", "Rory Williams", 5);
    group2.addCounter("AMY_POND", "Amy Pond", 4);
    group2.addCounter("MARTHA_JONES", "Martha Jones", 3);
    group2.addCounter("DONNA_NOBLE", "Donna Noble", 2);
    group2.addCounter("ROSE_TYLER", "Rose Tyler", 1);
    JsonNode jsonNode = JobHistoryEventUtils.countersToJSON(counters);
    String jsonStr = new ObjectMapper().writeValueAsString(jsonNode);
    String expected = "[{\"NAME\":\"COMPANIONS\",\"DISPLAY_NAME\":\"Companions " + "of the Doctor\",\"COUNTERS\":[{\"NAME\":\"AMY_POND\",\"DISPLAY_NAME\"" + ":\"Amy Pond\",\"VALUE\":4},{\"NAME\":\"CLARA_OSWALD\"," + "\"DISPLAY_NAME\":\"Clara Oswald\",\"VALUE\":6},{\"NAME\":" + "\"DONNA_NOBLE\",\"DISPLAY_NAME\":\"Donna Noble\",\"VALUE\":2}," + "{\"NAME\":\"MARTHA_JONES\",\"DISPLAY_NAME\":\"Martha Jones\"," + "\"VALUE\":3},{\"NAME\":\"RORY_WILLIAMS\",\"DISPLAY_NAME\":\"Rory " + "Williams\",\"VALUE\":5},{\"NAME\":\"ROSE_TYLER\",\"DISPLAY_NAME\":" + "\"Rose Tyler\",\"VALUE\":1}]},{\"NAME\":\"DOCTORS\",\"DISPLAY_NAME\"" + ":\"Incarnations of the Doctor\",\"COUNTERS\":[{\"NAME\":" + "\"DAVID_TENNANT\",\"DISPLAY_NAME\":\"David Tennant\",\"VALUE\":10}," + "{\"NAME\":\"MATT_SMITH\",\"DISPLAY_NAME\":\"Matt Smith\",\"VALUE\":" + "11},{\"NAME\":\"PETER_CAPALDI\",\"DISPLAY_NAME\":\"Peter Capaldi\"," + "\"VALUE\":12}]}]";
    Assert.assertEquals(expected, jsonStr);
}

Example 29 with ObjectMapper

use of com.fasterxml.jackson.databind.ObjectMapper in project hadoop by apache.

the class StatePool method read.

private void read(DataInput in) throws IOException {
    ObjectMapper mapper = new ObjectMapper();
    // define a module
    SimpleModule module = new SimpleModule("State Serializer", new Version(0, 1, 1, "FINAL", "", ""));
    // add the state deserializer
    module.addDeserializer(StatePair.class, new StateDeserializer());
    // register the module with the object-mapper
    mapper.registerModule(module);
    JsonParser parser = mapper.getFactory().createParser((DataInputStream) in);
    StatePool statePool = mapper.readValue(parser, StatePool.class);
    this.setStates(statePool.getStates());
    parser.close();
}

Example 30 with ObjectMapper

use of com.fasterxml.jackson.databind.ObjectMapper in project hadoop by apache.

the class RumenToSLSConverter method generateSLSLoadFile.

private static void generateSLSLoadFile(String inputFile, String outputFile) throws IOException {
    try (Reader input = new InputStreamReader(new FileInputStream(inputFile), "UTF-8")) {
        try (Writer output = new OutputStreamWriter(new FileOutputStream(outputFile), "UTF-8")) {
            ObjectMapper mapper = new ObjectMapper();
            ObjectWriter writer = mapper.writerWithDefaultPrettyPrinter();
            Iterator<Map> i = mapper.readValues(new JsonFactory().createParser(input), Map.class);
            while (i.hasNext()) {
                Map m = i.next();
                output.write(writer.writeValueAsString(createSLSJob(m)) + EOL);
            }
        }
    }
}