Examples of org.restlet.Client

org.restlet.Client
Connector acting as a generic client. It internally uses one of the available connector helpers registered with the Restlet engine.

Concurrency note: instances of this class or its subclasses can be invoked by several threads at the same time and therefore must be thread-safe. You should be especially careful when storing state in member variables.

For advanced cases, it is possible to obtained the wrapped {@link RestletHelper} instance that is used by this client to handle thecalls via the "org.restlet.engine.helper" attribute stored in the {@link Context} object. @author Jerome Louvel


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


    request.setEntity(JsonParameters.JSON_PARAMETERS + "="
        + ClusterRepresentationUtil.ObjectToJson(paraMap), MediaType.APPLICATION_ALL);
    Client client = new Client(Protocol.HTTP);
    Response response = client.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);
    client = new Client(Protocol.HTTP);
    response = client.handle(request);


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

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            + resourceGroupName + "/idealState";


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


    Client client = new Client(Protocol.HTTP);
    Response response = client.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);
    client = new Client(Protocol.HTTP);
    response = client.handle(request);


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

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  // verify get/post configs in different scopes
  void verifyConfigAccessor() throws Exception
  {
    ObjectMapper mapper = new ObjectMapper();
    Client client = new Client(Protocol.HTTP);


    // set/get cluster scope configs
    String url =
        "http://localhost:" + ADMIN_PORT + "/clusters/" + clusterName + "/configs/cluster/"
            + clusterName;

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


    request.setEntity(JsonParameters.JSON_PARAMETERS + "="
        + ClusterRepresentationUtil.ObjectToJson(paramMap), MediaType.APPLICATION_ALL);
    Client client = new Client(Protocol.HTTP);
    Response response = client.handle(request);


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


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


    // verify pause znode exists
    String pausePath = PropertyPathConfig.getPath(PropertyType.PAUSE, clusterName);
    System.out.println("pausePath: " + pausePath);
    boolean exists = _gZkClient.exists(pausePath);
    Assert.assertTrue(exists, pausePath + " should exist");


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


    request.setEntity(JsonParameters.JSON_PARAMETERS + "="
        + ClusterRepresentationUtil.ObjectToJson(paramMap), MediaType.APPLICATION_ALL);
    client = new Client(Protocol.HTTP);
    response = client.handle(request);


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

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    private boolean throwException;


    public RestletProducer(RestletEndpoint endpoint) throws Exception {
        super(endpoint);
        this.throwException = endpoint.isThrowExceptionOnFailure();
        client = new Client(endpoint.getProtocol());
        client.setContext(new Context());
        client.setConnectTimeout(100);
        client.getContext().getParameters().add("socketTimeout", String.valueOf(endpoint.getSocketTimeout()));
        client.getContext().getParameters().add("socketConnectTimeoutMs", String.valueOf(endpoint.getSocketTimeout()));
    }

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    private boolean throwException;


    public RestletProducer(RestletEndpoint endpoint) throws Exception {
        super(endpoint);
        this.throwException = endpoint.isThrowExceptionOnFailure();
        client = new Client(endpoint.getProtocol());
        client.setContext(new Context());
        client.getContext().getParameters().add("socketTimeout", String.valueOf(endpoint.getSocketTimeout()));
        client.getContext().getParameters().add("socketConnectTimeoutMs", String.valueOf(endpoint.getSocketTimeout()));
    }

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    @SuppressWarnings("unchecked")
    protected Component createComponent() {
        Component component = null;


        // Look for the Component XML configuration file.
        Client client = createWarClient(new Context(), getServletConfig());
        Response response = client.get("war:///WEB-INF/restlet.xml");
        if (response.getStatus().isSuccess() && response.isEntityAvailable()) {
            component = new Component(response.getEntity());
        }


        // Look for the component class name specified in the web.xml file.

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     * 
     * @return True if the Component is the default one, false otherwise.
     */
    private boolean isDefaultComponent() {
        // The Component is provided via an XML configuration file.
        Client client = createWarClient(new Context(), getServletConfig());
        Response response = client.get("war:///WEB-INF/restlet.xml");
        if (response.getStatus().isSuccess() && response.isEntityAvailable()) {
            return false;
        }


        // The Component is provided via a context parameter in the "web.xml"

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                            .getConnectorService().getClientProtocols()) {
                        boolean clientFound = false;


                        // Try to find a client connector matching the client
                        // protocol
                        Client client;
                        for (Iterator<Client> iter = getComponent()
                                .getClients().iterator(); !clientFound
                                && iter.hasNext();) {
                            client = iter.next();
                            clientFound = client.getProtocols().contains(
                                    clientProtocol);
                        }


                        if (!clientFound) {
                            getComponent()

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        String response = (String)template.requestBody("direct:start", "<order foo='1'/>");
        assertEquals("received [<order foo='1'/>] as an order id = " + ID, response);
    }


    public void testConsumer() throws IOException {
        Client client = new Client(Protocol.HTTP);
        Response response = client.handle(new Request(Method.GET, 
                "http://localhost:9080/orders/99991/6"));
        assertEquals("received GET request with id=99991 and x=6",
                response.getEntity().getText());
    }

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