Monitoring API - write framework adapters

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

4 files changed, 137 insertions, 0 deletions

diff --git a/standardization/moher-api/healthstate/pom.xml b/standardization/moher-api/healthstate/pom.xml
index d6cf46be..a4036288 100644
--- a/standardization/moher-api/healthstate/pom.xml
+++ b/standardization/moher-api/healthstate/pom.xml
@@ -33,4 +33,23 @@
     <artifactId>dcaegen2-sdk-moher-healthstate</artifactId>
 
 
+    <dependencies>
+        <dependency>
+            <groupId>io.vavr</groupId>
+            <artifactId>vavr
+            </artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.immutables</groupId>
+            <artifactId>value</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.immutables</groupId>
+            <artifactId>gson</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.projectreactor</groupId>
+            <artifactId>reactor-core</artifactId>
+        </dependency>
+    </dependencies>
 </project>
\ No newline at end of file
diff --git a/standardization/moher-api/healthstate/src/main/java/org/onap/dcaegen2/services/sdk/standardization/moher/health/api/AliveMessage.java b/standardization/moher-api/healthstate/src/main/java/org/onap/dcaegen2/services/sdk/standardization/moher/health/api/AliveMessage.java
new file mode 100644
index 00000000..c9a8c226
--- /dev/null
+++ b/standardization/moher-api/healthstate/src/main/java/org/onap/dcaegen2/services/sdk/standardization/moher/health/api/AliveMessage.java
@@ -0,0 +1,29 @@
+/*
+ * ============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.health.api;
+
+public final class AliveMessage {
+
+    public static final String ALIVE_MESSAGE_JSON = "{\"alive\":true}";
+
+    private AliveMessage() {
+    }
+}
diff --git a/standardization/moher-api/healthstate/src/main/java/org/onap/dcaegen2/services/sdk/standardization/moher/health/api/Health.java b/standardization/moher-api/healthstate/src/main/java/org/onap/dcaegen2/services/sdk/standardization/moher/health/api/Health.java
new file mode 100644
index 00000000..65b11ad1
--- /dev/null
+++ b/standardization/moher-api/healthstate/src/main/java/org/onap/dcaegen2/services/sdk/standardization/moher/health/api/Health.java
@@ -0,0 +1,51 @@
+/*
+ * ============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.health.api;
+
+import org.immutables.gson.Gson;
+import org.immutables.value.Value;
+
+@Value.Immutable
+@Gson.TypeAdapters
+public interface Health {
+
+    @Value.Default
+    default boolean healthy() {
+        return true;
+    }
+
+    @Value.Default
+    default String description() {
+        return "Service is working correctly";
+    }
+
+    static Health createHealthy() {
+        return ImmutableHealth.builder().build();
+    }
+
+    static Health createHealthy(String description) {
+        return ImmutableHealth.builder().description(description).build();
+    }
+
+    static Health createUnhealthy(String description) {
+        return ImmutableHealth.builder().healthy(false).description(description).build();
+    }
+}
diff --git a/standardization/moher-api/healthstate/src/main/java/org/onap/dcaegen2/services/sdk/standardization/moher/health/api/HealthProvider.java b/standardization/moher-api/healthstate/src/main/java/org/onap/dcaegen2/services/sdk/standardization/moher/health/api/HealthProvider.java
new file mode 100644
index 00000000..b6d770a4
--- /dev/null
+++ b/standardization/moher-api/healthstate/src/main/java/org/onap/dcaegen2/services/sdk/standardization/moher/health/api/HealthProvider.java
@@ -0,0 +1,38 @@
+/*
+ * ============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.health.api;
+
+import io.vavr.Function0;
+import java.util.function.Supplier;
+import reactor.core.publisher.Mono;
+
+@FunctionalInterface
+public interface HealthProvider {
+    Mono<Health> currentHealth();
+
+    static HealthProvider fromFunction(Function0<Health> function) {
+        return () -> Mono.fromCallable(function::apply);
+    }
+
+    static HealthProvider fromSupplier(Supplier<Health> function) {
+        return () -> Mono.fromCallable(function::get);
+    }
+}