Monitoring API - write framework adapters

Change-Id: Iaba9c4ef6022d01c1f572055316700a3a4dfa8f2
Issue-ID: DCAEGEN2-1589
Signed-off-by: Piotr Jaszczyk <piotr.jaszczyk@nokia.com>

2 files changed, 129 insertions, 0 deletions

diff --git a/standardization/moher-api/server-adapters/spring-webflux/src/test/java/org/onap/dcaegen2/services/sdk/standardization/moher/adapters/springwebflux/HealthControllerIT.java b/standardization/moher-api/server-adapters/spring-webflux/src/test/java/org/onap/dcaegen2/services/sdk/standardization/moher/adapters/springwebflux/HealthControllerIT.java
new file mode 100644
index 00000000..236cc16f
--- /dev/null
+++ b/standardization/moher-api/server-adapters/spring-webflux/src/test/java/org/onap/dcaegen2/services/sdk/standardization/moher/adapters/springwebflux/HealthControllerIT.java
@@ -0,0 +1,81 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 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.dcaegen2.services.sdk.standardization.moher.adapters.springwebflux;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.concurrent.atomic.AtomicReference;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+import org.junit.jupiter.api.Test;
+import org.onap.dcaegen2.services.sdk.standardization.moher.health.api.AliveMessage;
+import org.onap.dcaegen2.services.sdk.standardization.moher.health.api.GsonAdaptersHealth;
+import org.onap.dcaegen2.services.sdk.standardization.moher.health.api.Health;
+import org.onap.dcaegen2.services.sdk.standardization.moher.health.api.HealthProvider;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.reactive.server.WebTestClient;
+
+import reactor.core.publisher.Mono;
+
+class HealthControllerIT {
+
+    private final AtomicReference<Health> currentHealth = new AtomicReference<>();
+    private final HealthProvider healthProvider = () -> Mono.fromCallable(currentHealth::get);
+    private final HealthController sut = HealthController.create(healthProvider);
+    private final WebTestClient client = WebTestClient.bindToController(sut).build();
+    private final Gson gsonForDeserialization = new GsonBuilder().registerTypeAdapterFactory(new GsonAdaptersHealth())
+            .create();
+
+    @Test
+    void readinessProbeShouldReturnOkWhenHealthy() {
+        final Health expectedHealth = Health.createHealthy("Ready to go");
+        currentHealth.set(expectedHealth);
+
+        client.get().uri("/health/ready").accept(MediaType.APPLICATION_JSON).exchange().expectStatus().isOk()
+                .expectBody(String.class).value(body -> {
+                    final Health actualHealth = gsonForDeserialization.fromJson(body, Health.class);
+                    assertThat(actualHealth).isEqualTo(expectedHealth);
+                });
+    }
+
+    @Test
+    void readinessProbeShouldReturnUnavailableWhenNotHealthy() {
+        final Health expectedHealth = Health.createUnhealthy("Waiting for CBS update");
+        currentHealth.set(expectedHealth);
+
+        client.get().uri("/health/ready").accept(MediaType.APPLICATION_JSON).exchange().expectStatus()
+                .is5xxServerError().expectBody(String.class).value(body -> {
+                    final Health actualHealth = gsonForDeserialization.fromJson(body, Health.class);
+                    assertThat(actualHealth).isEqualTo(expectedHealth);
+                });
+    }
+
+    @Test
+    void livenessProbeShouldAlwaysReturnOk() {
+        client.get().uri("/health/alive").accept(MediaType.APPLICATION_JSON).exchange().expectStatus().isOk()
+                .expectBody(String.class).value(body -> {
+                    assertThat(body).isEqualTo(AliveMessage.ALIVE_MESSAGE_JSON);
+                });
+    }
+
+}
diff --git a/standardization/moher-api/server-adapters/spring-webflux/src/test/java/org/onap/dcaegen2/services/sdk/standardization/moher/adapters/springwebflux/MetricsControllerIT.java b/standardization/moher-api/server-adapters/spring-webflux/src/test/java/org/onap/dcaegen2/services/sdk/standardization/moher/adapters/springwebflux/MetricsControllerIT.java
new file mode 100644
index 00000000..32d00449
--- /dev/null
+++ b/standardization/moher-api/server-adapters/spring-webflux/src/test/java/org/onap/dcaegen2/services/sdk/standardization/moher/adapters/springwebflux/MetricsControllerIT.java
@@ -0,0 +1,48 @@
+/*
+ * ============LICENSE_START====================================
+ * DCAEGEN2-SERVICES-SDK
+ * =========================================================
+ * Copyright (C) 2019 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.dcaegen2.services.sdk.standardization.moher.adapters.springwebflux;
+
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import io.micrometer.prometheus.PrometheusMeterRegistry;
+import org.junit.jupiter.api.Test;
+import org.onap.dcaegen2.services.sdk.standardization.moher.metrics.api.Metrics;
+import org.onap.dcaegen2.services.sdk.standardization.moher.metrics.api.MetricsFactory;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.reactive.server.WebTestClient;
+
+class MetricsControllerIT {
+
+    private final PrometheusMeterRegistry defaultRegistry = MetricsFactory.createDefaultRegistry();
+    private final Metrics metrics = MetricsFactory.createMetrics(defaultRegistry);
+    private final MetricsController sut = new MetricsController(metrics);
+    private final WebTestClient client = WebTestClient.bindToController(sut).build();
+
+    @Test
+    void prometheusMetrics() {
+        client.get().uri("/metrics").accept(MediaType.ALL).exchange()
+                .expectStatus().isOk()
+                .expectHeader().contentTypeCompatibleWith(MediaType.TEXT_PLAIN)
+                .expectBody(String.class)
+                .value(body -> assertThat(body).contains("system_cpu").contains("jvm_classes"));
+    }
+}