Examples of org.restlet.Request

org.restlet.Request
Generic request sent by client connectors. It is then received by server connectors and processed by {@link Restlet}s. This request can also be processed by a chain of Restlets, on both client and server sides. Requests are uniform across all types of connectors, protocols and components. @see org.restlet.Response @see org.restlet.Uniform @author Jerome Louvel

    @Override
    public boolean process(final Exchange exchange, final AsyncCallback callback) {
        RestletEndpoint endpoint = (RestletEndpoint) getEndpoint();


        final RestletBinding binding = endpoint.getRestletBinding();
        Request request;
        try {
            String resourceUri = buildUri(endpoint, exchange);
            request = new Request(endpoint.getRestletMethod(), resourceUri);
            binding.populateRestletRequestFromExchange(request, exchange);
        } catch (CamelExchangeException e) {
            // break out in case of exception
            exchange.setException(e);
            callback.done(true);

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    @Override
    public boolean process(final Exchange exchange, final AsyncCallback callback) {
        RestletEndpoint endpoint = (RestletEndpoint) getEndpoint();


        final RestletBinding binding = endpoint.getRestletBinding();
        Request request;
        try {
            String resourceUri = buildUri(endpoint, exchange);
            request = new Request(endpoint.getRestletMethod(), resourceUri);
            binding.populateRestletRequestFromExchange(request, exchange);
        } catch (CamelExchangeException e) {
            // break out in case of exception
            exchange.setException(e);
            callback.done(true);

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  void verifyAddStateModel() throws JsonGenerationException, JsonMappingException, IOException {
    String httpUrlBase =
        "http://localhost:" + ADMIN_PORT + "/clusters/" + clusterName
            + "/StateModelDefs/MasterSlave";
    Reference resourceRef = new Reference(httpUrlBase);
    Request request = new Request(Method.GET, resourceRef);
    Response response = _gClient.handle(request);
    Representation result = response.getEntity();
    StringWriter sw = new StringWriter();
    result.write(sw);
    ObjectMapper mapper = new ObjectMapper();
    ZNRecord zn = mapper.readValue(new StringReader(sw.toString()), ZNRecord.class);


    Map<String, String> paraMap = new HashMap<String, String>();


    paraMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.addStateModelDef);


    ZNRecord r = new ZNRecord("Test");
    r.merge(zn);


    httpUrlBase = "http://localhost:" + ADMIN_PORT + "/clusters/" + clusterName + "/StateModelDefs";
    resourceRef = new Reference(httpUrlBase);
    request = new Request(Method.POST, resourceRef);
    request.setEntity(
        JsonParameters.JSON_PARAMETERS + "=" + ClusterRepresentationUtil.ObjectToJson(paraMap)
            + "&" + JsonParameters.NEW_STATE_MODEL_DEF + "="
            + ClusterRepresentationUtil.ZNRecordToJson(r), MediaType.APPLICATION_ALL);
    response = _gClient.handle(request);

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    paraMap.put(JsonParameters.CLUSTER_NAME, clusterName);
    paraMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.addCluster);


    Reference resourceRef = new Reference(httpUrlBase);


    Request request = new Request(Method.POST, resourceRef);


    request.setEntity(
        JsonParameters.JSON_PARAMETERS + "=" + ClusterRepresentationUtil.ObjectToJson(paraMap),
        MediaType.APPLICATION_ALL);
    Response response = _gClient.handle(request);


    Representation result = response.getEntity();

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    paraMap.put(JsonParameters.STATE_MODEL_DEF_REF, "MasterSlave");
    paraMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.addResource);


    Reference resourceRef = new Reference(httpUrlBase);


    Request request = new Request(Method.POST, resourceRef);


    request.setEntity(
        JsonParameters.JSON_PARAMETERS + "=" + ClusterRepresentationUtil.ObjectToJson(paraMap),
        MediaType.APPLICATION_ALL);
    Response response = _gClient.handle(request);


    Representation result = response.getEntity();
    StringWriter sw = new StringWriter();
    result.write(sw);


    // System.out.println(sw.toString());


    ObjectMapper mapper = new ObjectMapper();
    ZNRecord zn = mapper.readValue(new StringReader(sw.toString()), ZNRecord.class);
    AssertJUnit.assertTrue(zn.getListField("ResourceGroups").contains(resourceGroupName));


    httpUrlBase =
        "http://localhost:" + ADMIN_PORT + "/clusters/" + clusterName + "/resourceGroups/"
            + resourceGroupName;
    resourceRef = new Reference(httpUrlBase);


    request = new Request(Method.GET, resourceRef);


    response = _gClient.handle(request);


    result = response.getEntity();
    sw = new StringWriter();

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    paraMap.put(JsonParameters.INSTANCE_NAME, instance1 + ":" + instancePort);
    paraMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.addInstance);


    Reference resourceRef = new Reference(httpUrlBase);


    Request request = new Request(Method.POST, resourceRef);


    request.setEntity(
        JsonParameters.JSON_PARAMETERS + "=" + ClusterRepresentationUtil.ObjectToJson(paraMap),
        MediaType.APPLICATION_ALL);
    Response response = _gClient.handle(request);


    Representation result = response.getEntity();
    StringWriter sw = new StringWriter();
    result.write(sw);


    // System.out.println(sw.toString());


    ObjectMapper mapper = new ObjectMapper();


    TypeReference<ListInstancesWrapper> typeRef = new TypeReference<ListInstancesWrapper>() {
    };
    ListInstancesWrapper wrapper = mapper.readValue(new StringReader(sw.toString()), typeRef);
    List<ZNRecord> znList = wrapper.instanceInfo;
    AssertJUnit.assertTrue(znList.get(0).getId().equals(instance1 + "_" + instancePort));


    // the case to add more than 1 instances
    paraMap.clear();
    paraMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.addInstance);


    String[] instances = {
        "test2", "test3", "test4", "test5"
    };


    String instanceNames = "";
    boolean first = true;
    for (String instance : instances) {
      if (first == true) {
        first = false;
      } else {
        instanceNames += ";";
      }
      instanceNames += (instance + ":" + instancePort);
    }
    paraMap.put(JsonParameters.INSTANCE_NAMES, instanceNames);


    request = new Request(Method.POST, resourceRef);


    request.setEntity(
        JsonParameters.JSON_PARAMETERS + "=" + ClusterRepresentationUtil.ObjectToJson(paraMap),
        MediaType.APPLICATION_ALL);
    response = _gClient.handle(request);


    result = response.getEntity();

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    paraMap.put(JsonParameters.REPLICAS, "" + replicas);
    paraMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.rebalance);


    Reference resourceRef = new Reference(httpUrlBase);


    Request request = new Request(Method.POST, resourceRef);


    request.setEntity(
        JsonParameters.JSON_PARAMETERS + "=" + ClusterRepresentationUtil.ObjectToJson(paraMap),
        MediaType.APPLICATION_ALL);
    Response response = _gClient.handle(request);


    Representation result = response.getEntity();
    StringWriter sw = new StringWriter();
    result.write(sw);


    // System.out.println(sw.toString());


    ObjectMapper mapper = new ObjectMapper();
    ZNRecord r = mapper.readValue(new StringReader(sw.toString()), ZNRecord.class);


    for (int i = 0; i < partitions; i++) {
      String partitionName = resourceGroupName + "_" + i;
      assert (r.getMapField(partitionName).size() == replicas);
    }


    httpUrlBase = "http://localhost:" + ADMIN_PORT + "/clusters/" + clusterName;
    resourceRef = new Reference(httpUrlBase);
    request = new Request(Method.GET, resourceRef);


    response = _gClient.handle(request);


    result = response.getEntity();
    sw = new StringWriter();

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    paraMap.put(JsonParameters.ENABLED, "" + false);
    paraMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.enableInstance);


    Reference resourceRef = new Reference(httpUrlBase);


    Request request = new Request(Method.POST, resourceRef);


    request.setEntity(
        JsonParameters.JSON_PARAMETERS + "=" + ClusterRepresentationUtil.ObjectToJson(paraMap),
        MediaType.APPLICATION_ALL);
    Response response = _gClient.handle(request);


    Representation result = response.getEntity();
    StringWriter sw = new StringWriter();
    result.write(sw);


    // System.out.println(sw.toString());


    ObjectMapper mapper = new ObjectMapper();
    ZNRecord r = mapper.readValue(new StringReader(sw.toString()), ZNRecord.class);
    AssertJUnit.assertTrue(r.getSimpleField(InstanceConfigProperty.HELIX_ENABLED.toString())
        .equals("" + false));


    // Then enable it
    paraMap.put(JsonParameters.ENABLED, "" + true);
    request = new Request(Method.POST, resourceRef);


    request.setEntity(
        JsonParameters.JSON_PARAMETERS + "=" + ClusterRepresentationUtil.ObjectToJson(paraMap),
        MediaType.APPLICATION_ALL);
    response = _gClient.handle(request);


    result = response.getEntity();

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    String httpUrlBase =
        "http://localhost:" + ADMIN_PORT + "/clusters/" + clusterName + "/resourceGroups/"
            + resourceGroupName + "/idealState";


    Reference resourceRef = new Reference(httpUrlBase);
    Request request = new Request(Method.GET, resourceRef);


    Response response = _gClient.handle(request);


    Representation result = response.getEntity();
    StringWriter sw = new StringWriter();
    result.write(sw);


    // System.out.println(sw.toString());


    ObjectMapper mapper = new ObjectMapper();
    ZNRecord r = mapper.readValue(new StringReader(sw.toString()), ZNRecord.class);
    String partitionName = "new-entity-12345_3";
    r.getMapFields().remove(partitionName);


    Map<String, String> paraMap = new HashMap<String, String>();
    // Add 1 instance
    paraMap.put(JsonParameters.MANAGEMENT_COMMAND, ClusterSetup.addIdealState);


    resourceRef = new Reference(httpUrlBase);


    request = new Request(Method.POST, resourceRef);
    request.setEntity(
        JsonParameters.JSON_PARAMETERS + "=" + ClusterRepresentationUtil.ObjectToJson(paraMap)
            + "&" + JsonParameters.NEW_IDEAL_STATE + "="
            + ClusterRepresentationUtil.ZNRecordToJson(r), MediaType.APPLICATION_ALL);
    response = _gClient.handle(request);

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    Assert.assertTrue(contains(record.getListField("PARTITION"), "testPartition"));


  }


  private ZNRecord get(Client client, String url, ObjectMapper mapper) throws Exception {
    Request request = new Request(Method.GET, new Reference(url));
    Response response = client.handle(request);
    Representation result = response.getEntity();
    StringWriter sw = new StringWriter();
    result.write(sw);
    String responseStr = sw.toString();

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