org.apache.geode.rest.internal.web.controllers.RestAPIsAndInterOpsDUnitTest.java Source code

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more contributor license
 * agreements. See the NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the License. You may obtain a
 * copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package org.apache.geode.rest.internal.web.controllers;

import static org.apache.geode.distributed.ConfigurationProperties.*;
import static org.junit.Assert.*;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;

import org.apache.geode.cache.AttributesFactory;
import org.apache.geode.cache.Cache;
import org.apache.geode.cache.CacheFactory;
import org.apache.geode.cache.DataPolicy;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.RegionAttributes;
import org.apache.geode.cache.RegionFactory;
import org.apache.geode.cache.RegionShortcut;
import org.apache.geode.cache.client.ClientCache;
import org.apache.geode.cache.client.ClientCacheFactory;
import org.apache.geode.cache.client.ClientRegionFactory;
import org.apache.geode.cache.client.ClientRegionShortcut;
import org.apache.geode.cache.client.internal.LocatorTestBase;
import org.apache.geode.cache.server.CacheServer;
import org.apache.geode.cache.server.ServerLoadProbe;
import org.apache.geode.distributed.DistributedSystem;
import org.apache.geode.internal.AvailablePort;
import org.apache.geode.internal.AvailablePortHelper;
import org.apache.geode.internal.cache.GemFireCacheImpl;
import org.apache.geode.management.ManagementTestBase;
import org.apache.geode.pdx.PdxInstance;
import org.apache.geode.test.dunit.Host;
import org.apache.geode.test.dunit.NetworkUtils;
import org.apache.geode.test.dunit.VM;
import org.apache.geode.test.junit.categories.DistributedTest;
import org.apache.geode.test.junit.runners.CategoryWithParameterizedRunnerFactory;

/**
 * Dunit Test containing inter - operations between REST Client and Gemfire cache client
 *
 * @since GemFire 8.0
 */

@Category(DistributedTest.class)
@RunWith(Parameterized.class)
@Parameterized.UseParametersRunnerFactory(CategoryWithParameterizedRunnerFactory.class)
public class RestAPIsAndInterOpsDUnitTest extends LocatorTestBase {

    private static final long serialVersionUID = -254776154266339226L;

    @Parameterized.Parameter
    public String urlContext;

    @Parameterized.Parameters
    public static Collection<String> data() {
        return Arrays.asList("/geode", "/gemfire-api");
    }

    private ManagementTestBase helper;

    public static final String PEOPLE_REGION_NAME = "People";

    // private static RestTemplate restTemplate;

    private static final String findAllPeopleQuery = "/queries?id=findAllPeople&q=SELECT%20*%20FROM%20/People";
    private static final String findPeopleByGenderQuery = "/queries?id=filterByGender&q=SELECT%20*%20from%20/People%20where%20gender=$1";
    private static final String findPeopleByLastNameQuery = "/queries?id=filterByLastName&q=SELECT%20*%20from%20/People%20where%20lastName=$1";

    private static final String[] PARAM_QUERY_IDS_ARRAY = { "findAllPeople", "filterByGender", "filterByLastName" };

    final static String QUERY_ARGS = "[" + "{" + "\"@type\": \"string\"," + "\"@value\": \"Patel\"" + "}" + "]";

    final static String PERSON_AS_JSON_CAS = "{" + "\"@old\" :" + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 101,"
            + " \"firstName\": \"Mithali\"," + " \"middleName\": \"Dorai\"," + " \"lastName\": \"Raj\","
            + " \"birthDate\": \"12/04/1982\"," + "\"gender\": \"FEMALE\"" + "}," + "\"@new\" :" + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 1101,"
            + " \"firstName\": \"Virat\"," + " \"middleName\": \"Premkumar\"," + " \"lastName\": \"Kohli\","
            + " \"birthDate\": \"08/11/1988\"," + "\"gender\": \"MALE\"" + "}" + "}";

    final static String PERSON_AS_JSON_REPLACE = "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 501,"
            + " \"firstName\": \"Barack\"," + " \"middleName\": \"Hussein\"," + " \"lastName\": \"Obama\","
            + " \"birthDate\": \"04/08/1961\"," + "\"gender\": \"MALE\"" + "}";

    private static final String PERSON_LIST_AS_JSON = "[" + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 3,"
            + " \"firstName\": \"Nishka3\"," + " \"middleName\": \"Nilkanth3\"," + " \"lastName\": \"Patel3\","
            + " \"birthDate\": \"07/31/2009\"," + "\"gender\": \"FEMALE\"" + "}," + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 4,"
            + " \"firstName\": \"Tanay4\"," + " \"middleName\": \"kiran4\"," + " \"lastName\": \"Patel4\","
            + " \"birthDate\": \"23/08/2012\"," + "\"gender\": \"MALE\"" + "}," + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 5,"
            + " \"firstName\": \"Nishka5\"," + " \"middleName\": \"Nilkanth5\"," + " \"lastName\": \"Patel5\","
            + " \"birthDate\": \"31/09/2009\"," + "\"gender\": \"FEMALE\"" + "}," + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 6,"
            + " \"firstName\": \"Tanay6\"," + " \"middleName\": \"Kiran6\"," + " \"lastName\": \"Patel\","
            + " \"birthDate\": \"23/08/2012\"," + "\"gender\": \"MALE\"" + "}," + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 7,"
            + " \"firstName\": \"Nishka7\"," + " \"middleName\": \"Nilkanth7\"," + " \"lastName\": \"Patel\","
            + " \"birthDate\": \"31/09/2009\"," + "\"gender\": \"FEMALE\"" + "}," + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 8,"
            + " \"firstName\": \"Tanay8\"," + " \"middleName\": \"kiran8\"," + " \"lastName\": \"Patel\","
            + " \"birthDate\": \"23/08/2012\"," + "\"gender\": \"MALE\"" + "}," + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 9,"
            + " \"firstName\": \"Nishka9\"," + " \"middleName\": \"Nilkanth9\"," + " \"lastName\": \"Patel\","
            + " \"birthDate\": \"31/09/2009\"," + "\"gender\": \"FEMALE\"" + "}," + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 10,"
            + " \"firstName\": \"Tanay10\"," + " \"middleName\": \"kiran10\"," + " \"lastName\": \"Patel\","
            + " \"birthDate\": \"23/08/2012\"," + "\"gender\": \"MALE\"" + "}," + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 11,"
            + " \"firstName\": \"Nishka11\"," + " \"middleName\": \"Nilkanth11\"," + " \"lastName\": \"Patel\","
            + " \"birthDate\": \"31/09/2009\"," + "\"gender\": \"FEMALE\"" + "}," + "{"
            + "\"@type\": \"org.apache.geode.rest.internal.web.controllers.Person\"," + "\"id\": 12,"
            + " \"firstName\": \"Tanay12\"," + " \"middleName\": \"kiran12\"," + " \"lastName\": \"Patel\","
            + " \"birthDate\": \"23/08/2012\"," + "\"gender\": \"MALE\"" + "}" + "]";

    public RestAPIsAndInterOpsDUnitTest() {
        super();
        this.helper = new ManagementTestBase() {
            {
            }
        };

    }

    @Override
    public final void preSetUp() throws Exception {
        disconnectAllFromDS();
    }

    @Override
    protected final void postTearDownLocatorTestBase() throws Exception {
        disconnectAllFromDS();
    }

    public String startBridgeServerWithRestService(final String hostName, final String[] groups,
            final String locators, final String[] regions, final ServerLoadProbe probe) {
        final int serverPort = AvailablePortHelper.getRandomAvailableTCPPort();

        // create Cache of given VM and start HTTP service with REST APIs service
        startBridgeServer(hostName, serverPort, groups, locators, regions, probe);

        return "http://" + hostName + ":" + serverPort + urlContext + "/v1";
    }

    @SuppressWarnings("deprecation")
    protected int startBridgeServer(String hostName, int restServicerPort, final String[] groups,
            final String locators, final String[] regions, final ServerLoadProbe probe) {

        Properties props = new Properties();
        props.setProperty(MCAST_PORT, String.valueOf(0));
        props.setProperty(LOCATORS, locators);
        props.setProperty(START_DEV_REST_API, "true");
        props.setProperty(HTTP_SERVICE_BIND_ADDRESS, hostName);
        props.setProperty(HTTP_SERVICE_PORT, String.valueOf(restServicerPort));

        DistributedSystem ds = getSystem(props);
        Cache cache = CacheFactory.create(ds);
        ((GemFireCacheImpl) cache).setReadSerialized(true);
        AttributesFactory factory = new AttributesFactory();

        factory.setEnableBridgeConflation(true);
        factory.setDataPolicy(DataPolicy.REPLICATE);
        RegionAttributes attrs = factory.create();
        for (int i = 0; i < regions.length; i++) {
            cache.createRegion(regions[i], attrs);
        }

        CacheServer server = cache.addCacheServer();
        server.setPort(0);
        server.setGroups(groups);
        server.setLoadProbe(probe);
        try {
            server.start();
        } catch (IOException e) {
            e.printStackTrace();
        }
        remoteObjects.put(CACHE_KEY, cache);
        return new Integer(server.getPort());
    }

    public void doPutsInClientCache() {
        ClientCache cache = GemFireCacheImpl.getInstance();
        assertNotNull(cache);
        Region<String, Object> region = cache.getRegion(PEOPLE_REGION_NAME);

        // put person object
        final Person person1 = new Person(101L, "Mithali", "Dorai", "Raj",
                DateTimeUtils.createDate(1982, Calendar.DECEMBER, 4), Gender.FEMALE);
        final Person person2 = new Person(102L, "Sachin", "Ramesh", "Tendulkar",
                DateTimeUtils.createDate(1975, Calendar.DECEMBER, 14), Gender.MALE);
        final Person person3 = new Person(103L, "Saurabh", "Baburav", "Ganguly",
                DateTimeUtils.createDate(1972, Calendar.AUGUST, 29), Gender.MALE);
        final Person person4 = new Person(104L, "Rahul", "subrymanyam", "Dravid",
                DateTimeUtils.createDate(1979, Calendar.MARCH, 17), Gender.MALE);
        final Person person5 = new Person(105L, "Jhulan", "Chidambaram", "Goswami",
                DateTimeUtils.createDate(1983, Calendar.NOVEMBER, 25), Gender.FEMALE);

        region.put("1", person1);
        region.put("2", person2);
        region.put("3", person3);
        region.put("4", person4);
        region.put("5", person5);

        final Person person6 = new Person(101L, "Rahul", "Rajiv", "Gndhi",
                DateTimeUtils.createDate(1970, Calendar.MAY, 14), Gender.MALE);
        final Person person7 = new Person(102L, "Narendra", "Damodar", "Modi",
                DateTimeUtils.createDate(1945, Calendar.DECEMBER, 24), Gender.MALE);
        final Person person8 = new Person(103L, "Atal", "Bihari", "Vajpayee",
                DateTimeUtils.createDate(1920, Calendar.AUGUST, 9), Gender.MALE);
        final Person person9 = new Person(104L, "Soniya", "Rajiv", "Gandhi",
                DateTimeUtils.createDate(1929, Calendar.MARCH, 27), Gender.FEMALE);
        final Person person10 = new Person(104L, "Priyanka", "Robert", "Gandhi",
                DateTimeUtils.createDate(1973, Calendar.APRIL, 15), Gender.FEMALE);

        final Person person11 = new Person(104L, "Murali", "Manohar", "Joshi",
                DateTimeUtils.createDate(1923, Calendar.APRIL, 25), Gender.MALE);
        final Person person12 = new Person(104L, "Lalkrishna", "Parmhansh", "Advani",
                DateTimeUtils.createDate(1910, Calendar.JANUARY, 01), Gender.MALE);
        final Person person13 = new Person(104L, "Shushma", "kumari", "Swaraj",
                DateTimeUtils.createDate(1943, Calendar.AUGUST, 10), Gender.FEMALE);
        final Person person14 = new Person(104L, "Arun", "raman", "jetly",
                DateTimeUtils.createDate(1942, Calendar.OCTOBER, 27), Gender.MALE);
        final Person person15 = new Person(104L, "Amit", "kumar", "shah",
                DateTimeUtils.createDate(1958, Calendar.DECEMBER, 21), Gender.MALE);
        final Person person16 = new Person(104L, "Shila", "kumari", "Dixit",
                DateTimeUtils.createDate(1927, Calendar.FEBRUARY, 15), Gender.FEMALE);

        Map<String, Object> userMap = new HashMap<String, Object>();
        userMap.put("6", person6);
        userMap.put("7", person7);
        userMap.put("8", person8);
        userMap.put("9", person9);
        userMap.put("10", person10);
        userMap.put("11", person11);
        userMap.put("12", person12);
        userMap.put("13", person13);
        userMap.put("14", person14);
        userMap.put("15", person15);
        userMap.put("16", person16);

        region.putAll(userMap);

        if (cache != null)
            cache.getLogger().info("Gemfire Cache Client: Puts successfully done");

    }

    public void doQueryOpsUsingRestApis(String restEndpoint) {
        String currentQueryOp = null;
        try {
            // Query TestCase-1 :: Prepare parameterized Queries
            {
                currentQueryOp = "findAllPeopleQuery";
                CloseableHttpClient httpclient = HttpClients.createDefault();
                HttpPost post = new HttpPost(restEndpoint + findAllPeopleQuery);
                post.addHeader("Content-Type", "application/json");
                post.addHeader("Accept", "application/json");
                CloseableHttpResponse createNamedQueryResponse = httpclient.execute(post);
                assertEquals(createNamedQueryResponse.getStatusLine().getStatusCode(), 201);
                assertNotNull(createNamedQueryResponse.getEntity());
                createNamedQueryResponse.close();

                post = new HttpPost(restEndpoint + findPeopleByGenderQuery);
                post.addHeader("Content-Type", "application/json");
                post.addHeader("Accept", "application/json");
                createNamedQueryResponse = httpclient.execute(post);
                assertEquals(createNamedQueryResponse.getStatusLine().getStatusCode(), 201);
                assertNotNull(createNamedQueryResponse.getEntity());
                createNamedQueryResponse.close();

                post = new HttpPost(restEndpoint + findPeopleByLastNameQuery);
                post.addHeader("Content-Type", "application/json");
                post.addHeader("Accept", "application/json");
                createNamedQueryResponse = httpclient.execute(post);
                assertEquals(createNamedQueryResponse.getStatusLine().getStatusCode(), 201);
                assertNotNull(createNamedQueryResponse.getEntity());
                createNamedQueryResponse.close();
            }

            // Query TestCase-2 :: List all parameterized queries
            {
                currentQueryOp = "listAllQueries";
                HttpGet get = new HttpGet(restEndpoint + "/queries");
                CloseableHttpClient httpclient = HttpClients.createDefault();
                CloseableHttpResponse listAllQueriesResponse = httpclient.execute(get);
                assertEquals(listAllQueriesResponse.getStatusLine().getStatusCode(), 200);
                assertNotNull(listAllQueriesResponse.getEntity());

                HttpEntity entity = listAllQueriesResponse.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                StringBuffer sb = new StringBuffer();
                while ((line = reader.readLine()) != null) {
                    sb.append(line);
                }
                listAllQueriesResponse.close();

                // Check whether received response contains expected query IDs.

                JSONObject jsonObject = new JSONObject(sb.toString());
                JSONArray jsonArray = jsonObject.getJSONArray("queries");
                for (int i = 0; i < jsonArray.length(); i++) {
                    assertTrue("PREPARE_PARAMETERIZED_QUERY: function IDs are not matched", Arrays
                            .asList(PARAM_QUERY_IDS_ARRAY).contains(jsonArray.getJSONObject(i).getString("id")));
                }
            }

            // Query TestCase-3 :: Run the specified named query passing in scalar values for query
            // parameters.
            {
                currentQueryOp = "filterByLastName";
                CloseableHttpClient httpclient = HttpClients.createDefault();
                HttpPost post = new HttpPost(restEndpoint + "/queries/filterByLastName");
                post.addHeader("Content-Type", "application/json");
                post.addHeader("Accept", "application/json");
                StringEntity entity = new StringEntity(QUERY_ARGS);
                post.setEntity(entity);
                CloseableHttpResponse runNamedQueryResponse = httpclient.execute(post);

                assertEquals(200, runNamedQueryResponse.getStatusLine().getStatusCode());
                assertNotNull(runNamedQueryResponse.getEntity());
            }
        } catch (Exception e) {
            throw new RuntimeException("unexpected exception", e);
        }
    }

    public void verifyUpdatesInClientCache() {
        ClientCache cache = GemFireCacheImpl.getInstance();
        assertNotNull(cache);
        Region<String, Object> region = cache.getRegion(PEOPLE_REGION_NAME);

        {
            Person expectedPerson = new Person(3L, "Nishka3", "Nilkanth3", "Patel3",
                    DateTimeUtils.createDate(2009, Calendar.JULY, 31), Gender.FEMALE);
            Object value = region.get("3");
            if (value instanceof PdxInstance) {
                PdxInstance pi3 = (PdxInstance) value;
                Person actualPerson = (Person) pi3.getObject();
                assertEquals(actualPerson.getId(), expectedPerson.getId());
                assertEquals(actualPerson.getFirstName(), expectedPerson.getFirstName());
                assertEquals(actualPerson.getMiddleName(), expectedPerson.getMiddleName());
                assertEquals(actualPerson.getLastName(), expectedPerson.getLastName());
                assertEquals(actualPerson.getBirthDate(), expectedPerson.getBirthDate());
                assertEquals(actualPerson.getGender(), expectedPerson.getGender());
            } else if (value instanceof Person) {
                fail("VerifyUpdatesInClientCache, Get on key 3, Expected to get value of type PdxInstance ");
            }
        }

        // TODO: uncomment it once following issue encountered in put?op=CAS is fixed or document the
        // issue
        // CAS functionality is not working in following test case
        // step-1: Java client, Region.put("K", A);
        // Step-2: Rest CAS request for key "K" with data "@old" = A. CAS is failing as existing
        // PdxInstance in cache and
        // PdxInstance generated from JSON (CAS request) does not match as their value's type are
        // getting changed
        /*
         * //verify update on key "1" { Object obj = region.get("1"); if (obj instanceof PdxInstance) {
         * PdxInstance pi = (PdxInstance)obj; Person p1 = (Person)pi.getObject();
         * System.out.println("Nilkanth1 : verifyUpdatesInClientCache() : GET ON KEY=1" +
         * p1.toString()); }else {
         * System.out.println("Nilkanth1 : verifyUpdatesInClientCache() GET ON KEY=1  returned OBJECT: "
         * + obj.toString()); } }
         */

        // verify update on key "2"
        {
            Person expectedPerson = new Person(501L, "Barack", "Hussein", "Obama",
                    DateTimeUtils.createDate(1961, Calendar.APRIL, 8), Gender.MALE);
            Object value = region.get("2");
            if (value instanceof PdxInstance) {
                PdxInstance pi3 = (PdxInstance) value;
                Person actualPerson = (Person) pi3.getObject();
                assertEquals(actualPerson.getId(), expectedPerson.getId());
                assertEquals(actualPerson.getFirstName(), expectedPerson.getFirstName());
                assertEquals(actualPerson.getMiddleName(), expectedPerson.getMiddleName());
                assertEquals(actualPerson.getLastName(), expectedPerson.getLastName());
                assertEquals(actualPerson.getBirthDate(), expectedPerson.getBirthDate());
                assertEquals(actualPerson.getGender(), expectedPerson.getGender());
            } else {
                fail("VerifyUpdatesInClientCache, Get on key 2, Expected to get value of type PdxInstance ");
            }
        }

        // verify Deleted key "13"
        {
            Object obj = region.get("13");
            assertEquals(obj, null);

            obj = region.get("14");
            assertEquals(obj, null);

            obj = region.get("15");
            assertEquals(obj, null);

            obj = region.get("16");
            assertEquals(obj, null);
        }

    }

    public void doUpdatesUsingRestApis(String restEndpoint) {
        // UPdate keys using REST calls
        {

            try {
                CloseableHttpClient httpclient = HttpClients.createDefault();
                HttpPut put = new HttpPut(restEndpoint + "/People/3,4,5,6,7,8,9,10,11,12");
                put.addHeader("Content-Type", "application/json");
                put.addHeader("Accept", "application/json");
                StringEntity entity = new StringEntity(PERSON_LIST_AS_JSON);
                put.setEntity(entity);
                CloseableHttpResponse result = httpclient.execute(put);
            } catch (Exception e) {
                throw new RuntimeException("unexpected exception", e);
            }
        }

        // Delete Single keys
        {
            try {
                CloseableHttpClient httpclient = HttpClients.createDefault();
                HttpDelete delete = new HttpDelete(restEndpoint + "/People/13");
                delete.addHeader("Content-Type", "application/json");
                delete.addHeader("Accept", "application/json");
                CloseableHttpResponse result = httpclient.execute(delete);
            } catch (Exception e) {
                throw new RuntimeException("unexpected exception", e);
            }
        }

        // Delete set of keys
        {
            try {
                CloseableHttpClient httpclient = HttpClients.createDefault();
                HttpDelete delete = new HttpDelete(restEndpoint + "/People/14,15,16");
                delete.addHeader("Content-Type", "application/json");
                delete.addHeader("Accept", "application/json");
                CloseableHttpResponse result = httpclient.execute(delete);
            } catch (Exception e) {
                throw new RuntimeException("unexpected exception", e);
            }
        }

        // REST put?op=CAS for key 1
        /*
         * try { { HttpEntity<Object> entity = new HttpEntity<Object>(PERSON_AS_JSON_CAS, headers);
         * ResponseEntity<String> result = RestTestUtils.getRestTemplate().exchange( restEndpoint +
         * "/People/1?op=cas", HttpMethod.PUT, entity, String.class); } } catch
         * (HttpClientErrorException e) {
         * 
         * fail("Caught HttpClientErrorException while doing put with op=cas"); }catch
         * (HttpServerErrorException se) {
         * fail("Caught HttpServerErrorException while doing put with op=cas"); }
         */

        // REST put?op=REPLACE for key 2
        {
            /*
             * HttpEntity<Object> entity = new HttpEntity<Object>(PERSON_AS_JSON_REPLACE, headers);
             * ResponseEntity<String> result = RestTestUtils.getRestTemplate().exchange( restEndpoint +
             * "/People/2?op=replace", HttpMethod.PUT, entity, String.class);
             */

            try {
                CloseableHttpClient httpclient = HttpClients.createDefault();
                HttpPut put = new HttpPut(restEndpoint + "/People/2?op=replace");
                put.addHeader("Content-Type", "application/json");
                put.addHeader("Accept", "application/json");
                StringEntity entity = new StringEntity(PERSON_AS_JSON_REPLACE);
                put.setEntity(entity);
                CloseableHttpResponse result = httpclient.execute(put);
            } catch (Exception e) {
                throw new RuntimeException("unexpected exception", e);
            }
        }
    }

    public void fetchRestServerEndpoints(String restEndpoint) {
        HttpGet get = new HttpGet(restEndpoint + "/servers");
        get.addHeader("Content-Type", "application/json");
        get.addHeader("Accept", "application/json");
        CloseableHttpClient httpclient = HttpClients.createDefault();
        CloseableHttpResponse response;

        try {
            response = httpclient.execute(get);
            HttpEntity entity = response.getEntity();
            InputStream content = entity.getContent();
            BufferedReader reader = new BufferedReader(new InputStreamReader(content));
            String line;
            StringBuffer str = new StringBuffer();
            while ((line = reader.readLine()) != null) {
                str.append(line);
            }

            // validate the satus code
            assertEquals(response.getStatusLine().getStatusCode(), 200);

            if (response.getStatusLine().getStatusCode() == 200) {
                JSONArray jsonArray = new JSONArray(str.toString());

                // verify total number of REST service endpoints in DS
                assertEquals(jsonArray.length(), 2);
            }

        } catch (ClientProtocolException e) {
            e.printStackTrace();
            fail(" Rest Request should not have thrown ClientProtocolException!");
        } catch (IOException e) {
            e.printStackTrace();
            fail(" Rest Request should not have thrown IOException!");
        } catch (JSONException e) {
            e.printStackTrace();
            fail(" Rest Request should not have thrown  JSONException!");
        }

    }

    public void doGetsUsingRestApis(String restEndpoint) {

        // HttpHeaders headers = setAcceptAndContentTypeHeaders();
        String currentOperation = null;
        JSONObject jObject;
        JSONArray jArray;
        try {
            // 1. Get on key="1" and validate result.
            {
                currentOperation = "GET on key 1";

                HttpGet get = new HttpGet(restEndpoint + "/People/1");
                get.addHeader("Content-Type", "application/json");
                get.addHeader("Accept", "application/json");
                CloseableHttpClient httpclient = HttpClients.createDefault();
                CloseableHttpResponse response = httpclient.execute(get);

                HttpEntity entity = response.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                StringBuffer str = new StringBuffer();
                while ((line = reader.readLine()) != null) {
                    str.append(line);
                }

                jObject = new JSONObject(str.toString());

                assertEquals(jObject.get("id"), 101);
                assertEquals(jObject.get("firstName"), "Mithali");
                assertEquals(jObject.get("middleName"), "Dorai");
                assertEquals(jObject.get("lastName"), "Raj");
                assertEquals(jObject.get("gender"), Gender.FEMALE.name());
            }

            // 2. Get on key="16" and validate result.
            {
                currentOperation = "GET on key 16";

                HttpGet get = new HttpGet(restEndpoint + "/People/16");
                get.addHeader("Content-Type", "application/json");
                get.addHeader("Accept", "application/json");
                CloseableHttpClient httpclient = HttpClients.createDefault();
                CloseableHttpResponse response = httpclient.execute(get);

                HttpEntity entity = response.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                StringBuffer str = new StringBuffer();
                while ((line = reader.readLine()) != null) {
                    str.append(line);
                }

                jObject = new JSONObject(str.toString());

                assertEquals(jObject.get("id"), 104);
                assertEquals(jObject.get("firstName"), "Shila");
                assertEquals(jObject.get("middleName"), "kumari");
                assertEquals(jObject.get("lastName"), "Dixit");
                assertEquals(jObject.get("gender"), Gender.FEMALE.name());
            }

            // 3. Get all (getAll) entries in Region
            {

                HttpGet get = new HttpGet(restEndpoint + "/People");
                get.addHeader("Content-Type", "application/json");
                get.addHeader("Accept", "application/json");
                CloseableHttpClient httpclient = HttpClients.createDefault();
                CloseableHttpResponse result = httpclient.execute(get);
                assertEquals(result.getStatusLine().getStatusCode(), 200);
                assertNotNull(result.getEntity());

                HttpEntity entity = result.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                StringBuffer sb = new StringBuffer();
                while ((line = reader.readLine()) != null) {
                    sb.append(line);
                }
                result.close();

                try {
                    jObject = new JSONObject(sb.toString());
                    jArray = jObject.getJSONArray("People");
                    assertEquals(jArray.length(), 16);
                } catch (JSONException e) {
                    fail(" Rest Request ::" + currentOperation + " :: should not have thrown JSONException ");
                }
            }

            // 4. GetAll?limit=10 (10 entries) and verify results
            {
                HttpGet get = new HttpGet(restEndpoint + "/People?limit=10");
                get.addHeader("Content-Type", "application/json");
                get.addHeader("Accept", "application/json");
                CloseableHttpClient httpclient = HttpClients.createDefault();
                CloseableHttpResponse response = httpclient.execute(get);
                assertEquals(response.getStatusLine().getStatusCode(), 200);
                assertNotNull(response.getEntity());

                HttpEntity entity = response.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                StringBuffer str = new StringBuffer();
                while ((line = reader.readLine()) != null) {
                    str.append(line);
                }

                try {
                    jObject = new JSONObject(str.toString());
                    jArray = jObject.getJSONArray("People");
                    assertEquals(jArray.length(), 10);
                } catch (JSONException e) {
                    fail(" Rest Request ::" + currentOperation + " :: should not have thrown JSONException ");
                }
            }

            // 5. Get keys - List all keys in region
            {

                HttpGet get = new HttpGet(restEndpoint + "/People/keys");
                get.addHeader("Content-Type", "application/json");
                get.addHeader("Accept", "application/json");
                CloseableHttpClient httpclient = HttpClients.createDefault();
                CloseableHttpResponse response = httpclient.execute(get);
                assertEquals(response.getStatusLine().getStatusCode(), 200);
                assertNotNull(response.getEntity());

                HttpEntity entity = response.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                StringBuffer str = new StringBuffer();
                while ((line = reader.readLine()) != null) {
                    str.append(line);
                }

                try {
                    jObject = new JSONObject(str.toString());
                    jArray = jObject.getJSONArray("keys");
                    assertEquals(jArray.length(), 16);
                } catch (JSONException e) {
                    fail(" Rest Request ::" + currentOperation + " :: should not have thrown JSONException ");
                }
            }

            // 6. Get data for specific keys
            {

                HttpGet get = new HttpGet(restEndpoint + "/People/1,3,5,7,9,11");
                get.addHeader("Content-Type", "application/json");
                get.addHeader("Accept", "application/json");
                CloseableHttpClient httpclient = HttpClients.createDefault();
                CloseableHttpResponse response = httpclient.execute(get);
                assertEquals(response.getStatusLine().getStatusCode(), 200);
                assertNotNull(response.getEntity());

                HttpEntity entity = response.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                StringBuffer str = new StringBuffer();
                while ((line = reader.readLine()) != null) {
                    str.append(line);
                }

                try {
                    jObject = new JSONObject(str.toString());
                    jArray = jObject.getJSONArray("People");
                    assertEquals(jArray.length(), 6);

                } catch (JSONException e) {
                    fail(" Rest Request ::" + currentOperation + " :: should not have thrown JSONException ");
                }
            }
        } catch (Exception e) {
            throw new RuntimeException("unexpected exception", e);
        }
    }

    public void createRegionInClientCache() {
        ClientCache cache = GemFireCacheImpl.getInstance();
        assertNotNull(cache);
        ClientRegionFactory<String, Object> crf = cache.createClientRegionFactory(ClientRegionShortcut.PROXY);
        Region<String, Object> region = crf.create(PEOPLE_REGION_NAME);

    }

    public void createRegion() {
        Cache cache = GemFireCacheImpl.getInstance();
        assertNotNull(cache);

        RegionFactory<String, Object> rf = cache.createRegionFactory(RegionShortcut.REPLICATE);
        Region<String, Object> region = rf.create(PEOPLE_REGION_NAME);
    }

    /**
     * InterOps Test between REST-client, Peer Cache Client and Client Cache
     *
     * @throws Exception
     */

    @Test
    public void testInterOpsWithReplicatedRegion() throws Exception {

        final Host host = Host.getHost(0);
        VM locator = host.getVM(0);
        VM manager = host.getVM(1);
        VM server = host.getVM(2);
        VM client = host.getVM(3);

        // start locator
        int locatorPort = AvailablePort.getRandomAvailablePort(AvailablePort.SOCKET);
        final String locatorHostName = NetworkUtils.getServerHostName(locator.getHost());
        locator.invoke(() -> startLocator(locatorHostName, locatorPort, ""));

        // find locators
        String locators = locatorHostName + "[" + locatorPort + "]";

        // start manager (peer cache)
        manager.invoke(() -> startManager(/* groups */null, locators, new String[] { REGION_NAME },
                CacheServer.DEFAULT_LOAD_PROBE));

        // start startCacheServer With RestService enabled
        final String serverHostName = server.getHost().getHostName();
        String restEndpoint = (String) server.invoke(() -> startBridgeServerWithRestService(serverHostName, null,
                locators, new String[] { REGION_NAME }, CacheServer.DEFAULT_LOAD_PROBE));

        // create a client cache
        client.invoke(() -> createClientCache(locatorHostName, locatorPort));

        // create region in Manager, peer cache and Client cache nodes
        manager.invoke(() -> createRegion());
        server.invoke(() -> createRegion());
        client.invoke(() -> createRegionInClientCache());

        // do some person puts from clientcache
        client.invoke(() -> doPutsInClientCache());

        // TEST: fetch all available REST endpoints
        fetchRestServerEndpoints(restEndpoint);

        // Controller VM - config REST Client and make HTTP calls
        doGetsUsingRestApis(restEndpoint);

        // update Data using REST APIs
        doUpdatesUsingRestApis(restEndpoint);

        client.invoke(() -> verifyUpdatesInClientCache());

        // Querying
        doQueryOpsUsingRestApis(restEndpoint);

        // stop the client and make sure the bridge server notifies
        // stopBridgeMemberVM(client);
        helper.closeCache(locator);
        helper.closeCache(manager);
        helper.closeCache(server);
        helper.closeCache(client);

    }

    private void createClientCache(final String host, final int port) throws Exception {
        // Connect using the GemFire locator and create a Caching_Proxy cache
        ClientCache c = new ClientCacheFactory().setPdxReadSerialized(true).addPoolLocator(host, port).create();

        c.createClientRegionFactory(ClientRegionShortcut.PROXY).create(REGION_NAME);
    }

    private int startManager(final String[] groups, final String locators, final String[] regions,
            final ServerLoadProbe probe) throws IOException {
        Properties props = new Properties();
        props.setProperty(MCAST_PORT, String.valueOf(0));
        props.setProperty(LOCATORS, locators);

        props.setProperty(JMX_MANAGER, "true");
        props.setProperty(JMX_MANAGER_START, "true");
        props.setProperty(JMX_MANAGER_PORT, "0");

        final int httpPort = AvailablePortHelper.getRandomAvailableTCPPort();
        // Set REST service related configuration
        props.setProperty(START_DEV_REST_API, "true");
        props.setProperty(HTTP_SERVICE_BIND_ADDRESS, "localhost");
        props.setProperty(HTTP_SERVICE_PORT, String.valueOf(httpPort));

        DistributedSystem ds = getSystem(props);
        Cache cache = CacheFactory.create(ds);
        AttributesFactory factory = new AttributesFactory();

        factory.setEnableBridgeConflation(true);
        factory.setDataPolicy(DataPolicy.REPLICATE);
        RegionAttributes attrs = factory.create();
        for (int i = 0; i < regions.length; i++) {
            cache.createRegion(regions[i], attrs);
        }
        CacheServer server = cache.addCacheServer();
        server.setPort(0);
        server.setGroups(groups);
        server.setLoadProbe(probe);
        server.start();

        return new Integer(server.getPort());
    }
}