Add IT to check metric endpoints can be accessed when authentication …

…is enabled

core/src/test/java/feast/core/metrics/CoreMetricsIT.java

@@ -0,0 +1,59 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright 2018-2020 The Feast Authors
+ *
+ * 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
+ *
+ *     https://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 feast.core.metrics;
+
+import static org.junit.Assert.assertTrue;
+
+import com.squareup.okhttp.OkHttpClient;
+import com.squareup.okhttp.Request;
+import com.squareup.okhttp.Response;
+import feast.core.it.BaseIT;
+import java.io.IOException;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.web.server.LocalServerPort;
+
+@SpringBootTest(
+    webEnvironment = WebEnvironment.RANDOM_PORT,
+    properties = {
+      "feast.security.authentication.enabled=true",
+    })
+public class CoreMetricsIT extends BaseIT {
+  private static final String METRIC_ENDPOINT = "/metrics";
+  private static OkHttpClient httpClient;
+  @LocalServerPort private int metricsPort;
+
+  @BeforeAll
+  public static void globalSetUp() {
+    httpClient = new OkHttpClient();
+  }
+
+  /** Test that Feast Core metrics endpoint can be accessed with authentication enabled */
+  @Test
+  public void shouldAllowUnauthenticatedAccessToMetricsEndpoint() throws IOException {
+    Request request =
+        new Request.Builder()
+            .url(String.format("http://localhost:%d%s", metricsPort, METRIC_ENDPOINT))
+            .get()
+            .build();
+    Response response = httpClient.newCall(request).execute();
+    assertTrue(response.isSuccessful());
+    assertTrue(!response.body().string().isEmpty());
+  }
+}

serving/src/test/java/feast/serving/it/ServingServiceOauthAuthenticationIT.java

@@ -20,6 +20,9 @@
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.testcontainers.containers.wait.strategy.Wait.forHttp;
 
+import com.squareup.okhttp.OkHttpClient;
+import com.squareup.okhttp.Request;
+import com.squareup.okhttp.Response;
 import feast.proto.serving.ServingAPIProto.GetOnlineFeaturesRequest;
 import feast.proto.serving.ServingAPIProto.GetOnlineFeaturesResponse;
 import feast.proto.serving.ServingServiceGrpc.ServingServiceBlockingStub;
@@ -35,6 +38,8 @@
 import org.junit.jupiter.api.Test;
 import org.junit.runners.model.InitializationError;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.web.server.LocalServerPort;
 import org.springframework.test.context.ActiveProfiles;
 import org.testcontainers.containers.DockerComposeContainer;
 import org.testcontainers.containers.wait.strategy.Wait;
@@ -43,6 +48,7 @@
 
 @ActiveProfiles("it")
 @SpringBootTest(
+    webEnvironment = WebEnvironment.RANDOM_PORT,
     properties = {
       "feast.core-authentication.enabled=true",
       "feast.core-authentication.provider=oauth",
@@ -55,6 +61,7 @@ public class ServingServiceOauthAuthenticationIT extends BaseAuthIT {
   static final Map<String, String> options = new HashMap<>();
 
   static final int FEAST_SERVING_PORT = 6566;
+  @LocalServerPort private int metricsPort;
 
   @ClassRule @Container
   public static DockerComposeContainer environment =
@@ -84,6 +91,19 @@ static void globalSetup() throws IOException, InitializationError, InterruptedEx
     options.put("grant_type", GRANT_TYPE);
   }
 
+  /** Test that Feast Serving metrics endpoint can be accessed with authentication enabled */
+  @Test
+  public void shouldAllowUnauthenticatedAccessToMetricsEndpoint() throws IOException {
+    Request request =
+        new Request.Builder()
+            .url(String.format("http://localhost:%d/metrics", metricsPort))
+            .get()
+            .build();
+    Response response = new OkHttpClient().newCall(request).execute();
+    assertTrue(response.isSuccessful());
+    assertTrue(!response.body().string().isEmpty());
+  }
+
   @Test
   public void shouldAllowUnauthenticatedGetOnlineFeatures() {
     // apply feature set