Generic REST client for external services

Initial commit for generic REST client for requests to another components APIs

Change-Id: I4af29ab1e45fd805403622e60585a351f3ef5d20
Issue-ID: VID-266
Signed-off-by: tgolabek <tomasz.golabek@nokia.com>

3 files changed, 463 insertions, 0 deletions

diff --git a/vid-app-common/src/test/java/org/onap/vid/client/SyncRestClientForHttpServerTest.java b/vid-app-common/src/test/java/org/onap/vid/client/SyncRestClientForHttpServerTest.java
new file mode 100644
index 000000000..d63d144e6
--- /dev/null
+++ b/vid-app-common/src/test/java/org/onap/vid/client/SyncRestClientForHttpServerTest.java
@@ -0,0 +1,268 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * VID
+ * ================================================================================
+ * Copyright (C) 2018 Nokia. All rights reserved.
+ * ================================================================================
+ * Licensed 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.vid.client;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.google.common.collect.ImmutableMap;
+import com.xebialabs.restito.semantics.Condition;
+import com.xebialabs.restito.server.StubServer;
+import io.joshworks.restclient.http.HttpResponse;
+import io.joshworks.restclient.http.JsonNode;
+import org.glassfish.grizzly.http.util.HttpStatus;
+import com.xebialabs.restito.semantics.Action;
+import org.testng.annotations.BeforeMethod;
+import org.testng.annotations.AfterMethod;
+import org.glassfish.grizzly.http.Method;
+import org.testng.annotations.Test;
+
+import java.util.Collections;
+import java.util.Map;
+
+import static com.xebialabs.restito.builder.verify.VerifyHttp.verifyHttp;
+import static com.xebialabs.restito.builder.stub.StubHttp.whenHttp;
+import static com.xebialabs.restito.semantics.Action.stringContent;
+import static com.xebialabs.restito.semantics.Action.contentType;
+import static com.xebialabs.restito.semantics.Action.status;
+import static com.xebialabs.restito.semantics.Action.ok;
+import static org.testng.Assert.assertEquals;
+
+public class SyncRestClientForHttpServerTest {
+
+    private static final SyncRestClientModel.TestModel testObject = new SyncRestClientModel.TestModel(1, "test");
+    private static final String NOT_EXISTING_OBJECT = "NOT EXISTING OBJECT";
+
+    private StubServer stubServer;
+    private ObjectMapper objectMapper = new ObjectMapper();
+    private SyncRestClient syncRestClient;
+
+    @BeforeMethod
+    public void setUp() {
+        stubServer = new StubServer();
+        stubServer.run();
+        syncRestClient = new SyncRestClient();
+    }
+
+    @AfterMethod
+    public void tearDown() {
+        stubServer.stop();
+        syncRestClient.destroy();
+    }
+
+    @Test
+    public void testJsonResponseFromGet() throws JsonProcessingException {
+        // given
+        stubGetCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<JsonNode> jsonNodeHttpResponse = syncRestClient
+            .get(url, Collections.emptyMap(), Collections.emptyMap());
+        // then
+        verifyHttp(stubServer).once(Condition.method(Method.GET), Condition.url(url));
+        assertEquals(jsonNodeHttpResponse.getStatus(), 200);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("key"), 1);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("value"), "test");
+    }
+
+    @Test
+    public void testObjectResponseFromGet() throws JsonProcessingException {
+        // given
+        stubGetCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<SyncRestClientModel.TestModel> testModelHttpResponse = syncRestClient
+            .get(url, Collections.emptyMap(), Collections.emptyMap(), SyncRestClientModel.TestModel.class);
+        // then
+        verifyHttp(stubServer).once(Condition.method(Method.GET), Condition.url(url));
+        assertEquals(testModelHttpResponse.getStatus(), 200);
+        assertEquals(testModelHttpResponse.getBody().getKey(), 1);
+        assertEquals(testModelHttpResponse.getBody().getValue(), "test");
+    }
+
+    @Test
+    public void testJsonResponseFromPost() throws JsonProcessingException {
+        // given
+        stubPostCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<JsonNode> jsonNodeHttpResponse = syncRestClient.post(url, Collections.emptyMap(), testObject);
+        // then
+        verifyHttp(stubServer).once(Condition.method(Method.POST), Condition.url(url));
+        assertEquals(jsonNodeHttpResponse.getStatus(), 200);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("key"), 1);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("value"), "test");
+    }
+
+    @Test
+    public void test404JsonResponseFromPost() throws JsonProcessingException {
+        // given
+        stubPostCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<JsonNode> jsonNodeHttpResponse = syncRestClient
+            .post(url, Collections.emptyMap(), NOT_EXISTING_OBJECT);
+        // then
+        assertEquals(jsonNodeHttpResponse.getStatus(), 404);
+        assertEquals(jsonNodeHttpResponse.getStatusText(), "Not Found");
+    }
+
+    @Test
+    public void testHeadersWerePassedToPost() throws JsonProcessingException {
+        // given
+        stubPostCall();
+        Map headers = ImmutableMap.<String, String>builder().put("Authorization", "Basic anyHash").build();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<JsonNode> jsonNodeHttpResponse = syncRestClient.post(url, headers, testObject);
+        // then
+        verifyHttp(stubServer).once(Condition.withHeader("Authorization"));
+        assertEquals(jsonNodeHttpResponse.getStatus(), 200);
+    }
+
+    @Test(expectedExceptions = {Exception.class})
+    public void testFailedJsonResponseFromPost() throws JsonProcessingException {
+        // given
+        stubPostCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        stubServer.stop();
+        syncRestClient.post(url, Collections.emptyMap(), testObject);
+    }
+
+    @Test
+    public void testObjectResponseFromPost() throws JsonProcessingException {
+        // given
+        stubPostCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<SyncRestClientModel.TestModel> objectHttpResponse = syncRestClient
+            .post(url, Collections.emptyMap(), testObject, SyncRestClientModel.TestModel.class);
+        // then
+        verifyHttp(stubServer).once(Condition.method(Method.POST), Condition.url(url));
+        assertEquals(objectHttpResponse.getStatus(), 200);
+        assertEquals(objectHttpResponse.getBody().getKey(), 1);
+        assertEquals(objectHttpResponse.getBody().getValue(), "test");
+    }
+
+    @Test
+    public void testJsonResponseFromPut() throws JsonProcessingException {
+        // given
+        stubPutCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<JsonNode> jsonNodeHttpResponse = syncRestClient.put(url, Collections.emptyMap(), testObject);
+        // then
+        verifyHttp(stubServer).once(Condition.method(Method.PUT), Condition.url(url));
+        assertEquals(jsonNodeHttpResponse.getStatus(), 201);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("key"), 1);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("value"), "test");
+    }
+
+    @Test
+    public void testObjectResponseFromPut() throws JsonProcessingException {
+        // given
+        stubPutCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<SyncRestClientModel.TestModel> modelHttpResponse = syncRestClient
+            .put(url, Collections.emptyMap(), testObject, SyncRestClientModel.TestModel.class);
+        // then
+        verifyHttp(stubServer).once(Condition.method(Method.PUT), Condition.url(url));
+        assertEquals(modelHttpResponse.getStatus(), 201);
+        assertEquals(modelHttpResponse.getBody().getKey(), 1);
+        assertEquals(modelHttpResponse.getBody().getValue(), "test");
+    }
+
+    @Test
+    public void testJsonResponseFromDelete() throws JsonProcessingException {
+        // given
+        stubDeleteCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<JsonNode> jsonNodeHttpResponse = syncRestClient.delete(url, Collections.emptyMap());
+        // then
+        verifyHttp(stubServer).once(Condition.method(Method.DELETE), Condition.url(url));
+        assertEquals(jsonNodeHttpResponse.getStatus(), 200);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("key"), 1);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("value"), "test");
+    }
+
+    @Test
+    public void testObjectResponseFromDelete() throws JsonProcessingException {
+        // given
+        stubDeleteCall();
+        String url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<SyncRestClientModel.TestModel> modelHttpResponse = syncRestClient
+            .delete(url, Collections.emptyMap(),  SyncRestClientModel.TestModel.class);
+        // then
+        verifyHttp(stubServer).once(Condition.method(Method.DELETE), Condition.url(url));
+        assertEquals(modelHttpResponse.getStatus(), 200);
+        assertEquals(modelHttpResponse.getBody().getKey(), 1);
+        assertEquals(modelHttpResponse.getBody().getValue(), "test");
+    }
+
+    @Test
+    public void testRedirectToHttp() throws JsonProcessingException {
+        // given
+        stubGetCall();
+        String secured_url = "https://0.0.0.0:" + stubServer.getPort() + "/test";
+        String available_url = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<JsonNode> jsonNodeHttpResponse = syncRestClient
+            .get(secured_url, Collections.emptyMap(), Collections.emptyMap());
+        // then
+        verifyHttp(stubServer).once(Condition.method(Method.GET), Condition.url(available_url),
+            Condition.not(Condition.url(secured_url)));
+        assertEquals(jsonNodeHttpResponse.getStatus(), 200);
+    }
+
+    private void stubGetCall() throws JsonProcessingException {
+        whenHttp(stubServer)
+            .match(Condition.get("/test"))
+            .then(ok(), jsonContent(), contentType("application/json"));
+    }
+
+    private void stubDeleteCall() throws JsonProcessingException {
+        whenHttp(stubServer)
+            .match(Condition.delete("/test"))
+            .then(ok(), jsonContent(), contentType("application/json"));
+    }
+
+    private void stubPostCall() throws JsonProcessingException {
+        whenHttp(stubServer)
+            .match(Condition.post("/test"),
+                Condition.withPostBodyContaining(objectMapper.writeValueAsString(testObject)))
+            .then(ok(), jsonContent(), contentType("application/json"));
+    }
+
+    private void stubPutCall() throws JsonProcessingException {
+        whenHttp(stubServer)
+            .match(Condition.put("/test"),
+                Condition.withPostBodyContaining(objectMapper.writeValueAsString(testObject)))
+            .then(status(HttpStatus.CREATED_201), jsonContent(), contentType("application/json"));
+    }
+
+    private Action jsonContent() throws JsonProcessingException {
+        return stringContent(objectMapper.writeValueAsString(testObject));
+    }
+
+}
\ No newline at end of file
diff --git a/vid-app-common/src/test/java/org/onap/vid/client/SyncRestClientForHttpsServerTest.java b/vid-app-common/src/test/java/org/onap/vid/client/SyncRestClientForHttpsServerTest.java
new file mode 100644
index 000000000..ba6da4351
--- /dev/null
+++ b/vid-app-common/src/test/java/org/onap/vid/client/SyncRestClientForHttpsServerTest.java
@@ -0,0 +1,139 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * VID
+ * ================================================================================
+ * Copyright (C) 2018 Nokia. All rights reserved.
+ * ================================================================================
+ * Licensed 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.vid.client;
+
+import io.joshworks.restclient.http.HttpResponse;
+import io.joshworks.restclient.http.JsonNode;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
+import org.apache.http.conn.socket.ConnectionSocketFactory;
+import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.conn.ssl.SSLContextBuilder;
+import com.xebialabs.restito.semantics.Condition;
+import com.xebialabs.restito.server.StubServer;
+import com.xebialabs.restito.semantics.Action;
+import org.apache.http.config.RegistryBuilder;
+import org.testng.annotations.BeforeMethod;
+import org.testng.annotations.AfterMethod;
+import org.glassfish.grizzly.http.Method;
+import org.apache.http.client.HttpClient;
+import org.apache.http.config.Registry;
+import org.testng.annotations.Test;
+
+import java.security.GeneralSecurityException;
+import javax.net.ssl.SSLContext;
+import java.util.Collections;
+
+import static com.xebialabs.restito.builder.verify.VerifyHttp.verifyHttp;
+import static com.xebialabs.restito.builder.stub.StubHttp.whenHttp;
+import static com.xebialabs.restito.semantics.Action.stringContent;
+import static com.xebialabs.restito.semantics.Action.contentType;
+import static org.apache.http.client.config.RequestConfig.custom;
+import static com.xebialabs.restito.semantics.Action.ok;
+import static org.testng.Assert.assertEquals;
+
+public class SyncRestClientForHttpsServerTest {
+
+    private static final SyncRestClientModel.TestModel testObject = new SyncRestClientModel.TestModel(1, "test");
+    private static final String[] SUPPORTED_PROTOCOLS = {"TLSv1", "TLSv1.2"};
+    private StubServer stubServer;
+    private ObjectMapper objectMapper = new ObjectMapper();
+
+    private SyncRestClient syncRestClient;
+
+    @BeforeMethod
+    public void setUp() throws GeneralSecurityException {
+        stubServer = new StubServer();
+        stubServer.secured().run();
+        syncRestClient = new SyncRestClient(createNaiveHttpClient());
+    }
+
+    @AfterMethod
+    public void tearDown() {
+        stubServer.stop();
+    }
+
+    @Test
+    public void testJsonResponseFromGet() throws JsonProcessingException {
+        // given
+        stubGetCall();
+        String securedUrl = "https://0.0.0.0:" + stubServer.getPort() + "/test";
+        String notSecuredUrl = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<JsonNode> jsonNodeHttpResponse = syncRestClient
+            .get(securedUrl, Collections.emptyMap(), Collections.emptyMap());
+        // then
+        verifyHttp(stubServer)
+            .once(Condition.method(Method.GET), Condition.url(securedUrl), Condition.not(Condition.url(notSecuredUrl)));
+        assertEquals(jsonNodeHttpResponse.getStatus(), 200);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("key"), 1);
+        assertEquals(jsonNodeHttpResponse.getBody().getObject().get("value"), "test");
+    }
+
+    @Test
+    public void testObjectResponseFromGet() throws JsonProcessingException {
+        // given
+        stubServer.run();
+        stubGetCall();
+        String securedUrl = "https://0.0.0.0:" + stubServer.getPort() + "/test";
+        String notSecuredUrl = "http://0.0.0.0:" + stubServer.getPort() + "/test";
+        // when
+        HttpResponse<SyncRestClientModel.TestModel> testModelHttpResponse = syncRestClient
+            .get(securedUrl, Collections.emptyMap(), Collections.emptyMap(), SyncRestClientModel.TestModel.class);
+        // then
+        verifyHttp(stubServer)
+            .once(Condition.method(Method.GET), Condition.url(securedUrl), Condition.not(Condition.url(notSecuredUrl)));
+        assertEquals(testModelHttpResponse.getStatus(), 200);
+        assertEquals(testModelHttpResponse.getBody().getKey(), 1);
+        assertEquals(testModelHttpResponse.getBody().getValue(), "test");
+    }
+
+    private Action jsonContent() throws JsonProcessingException {
+        return stringContent(objectMapper.writeValueAsString(testObject));
+    }
+
+    private void stubGetCall() throws JsonProcessingException {
+        whenHttp(stubServer)
+            .match(Condition.get("/test"))
+            .then(ok(), jsonContent(), contentType("application/json"));
+    }
+
+    private CloseableHttpClient createNaiveHttpClient() throws GeneralSecurityException {
+        final SSLContext context = new SSLContextBuilder().loadTrustMaterial(null, new TrustSelfSignedStrategy())
+            .build();
+
+        final SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(context, SUPPORTED_PROTOCOLS,
+            null, SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
+        Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
+            .register("https", socketFactory)
+            .build();
+
+        return HttpClientBuilder.create()
+            .setDefaultRequestConfig(custom().setConnectionRequestTimeout(10000).build())
+            .setConnectionManager(new PoolingHttpClientConnectionManager(registry))
+            .setSSLSocketFactory(socketFactory).build();
+    }
+
+}
\ No newline at end of file
diff --git a/vid-app-common/src/test/java/org/onap/vid/client/SyncRestClientModel.java b/vid-app-common/src/test/java/org/onap/vid/client/SyncRestClientModel.java
new file mode 100644
index 000000000..b64988a23
--- /dev/null
+++ b/vid-app-common/src/test/java/org/onap/vid/client/SyncRestClientModel.java
@@ -0,0 +1,56 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * VID
+ * ================================================================================
+ * Copyright (C) 2018 Nokia. All rights reserved.
+ * ================================================================================
+ * Licensed 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.vid.client;
+
+class SyncRestClientModel {
+
+    static class TestModel{
+
+        public TestModel() {
+            // needed by the object mappers
+        }
+
+        public TestModel(long key, String value) {
+            this.key = key;
+            this.value = value;
+        }
+
+        private long key;
+        private String value;
+
+        public void setKey(long key) {
+            this.key = key;
+        }
+
+        public void setValue(String value) {
+            this.value = value;
+        }
+
+        public long getKey() {
+            return key;
+        }
+
+        public String getValue() {
+            return value;
+        }
+    }
+
+}