helidon metrics to oci integration (#5945)

* Add Helidon Metrics integration with OCI

The change includes the following:
1. Port of v3 PR #5829 that includes additional changes and fixes.
2. Changes related to OciMetricsSupport use of Nima instead of SE Webserver dependency.
3. Fix pipeline error due to javadoc link that cannot be referenced

bom/pom.xml

@@ -1038,6 +1038,16 @@
                 <artifactId>helidon-integrations-oci-sdk-cdi</artifactId>
                 <version>${helidon.version}</version>
             </dependency>
+            <dependency>
+                <groupId>io.helidon.integrations.oci.metrics</groupId>
+                <artifactId>helidon-integrations-oci-metrics</artifactId>
+                <version>${helidon.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.helidon.integrations.oci.metrics</groupId>
+                <artifactId>helidon-integrations-oci-metrics-cdi</artifactId>
+                <version>${helidon.version}</version>
+            </dependency>
             <dependency>
                 <groupId>io.helidon.integrations.vault</groupId>
                 <artifactId>helidon-integrations-vault</artifactId>

integrations/oci/metrics/cdi/pom.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    Copyright (c) 2021, 2023 Oracle and/or its affiliates.
+
+    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.
+  -->
+
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>io.helidon.integrations.oci.metrics</groupId>
+        <artifactId>helidon-integrations-oci-metrics-project</artifactId>
+        <version>4.0.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>helidon-integrations-oci-metrics-cdi</artifactId>
+    <name>Helidon Integrations OCI Metrics CDI</name>
+    <description>Helidon Metrics to OCI via CDI</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.helidon.integrations.oci.metrics</groupId>
+            <artifactId>helidon-integrations-oci-metrics</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.helidon.microprofile.server</groupId>
+            <artifactId>helidon-microprofile-server</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-params</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.helidon.microprofile.tests</groupId>
+            <artifactId>helidon-microprofile-tests-junit5</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>hamcrest-all</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

integrations/oci/metrics/cdi/src/main/java/io/helidon/integrations/oci/metrics/cdi/OciMetricsBean.java

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2023 Oracle and/or its affiliates.
+ *
+ * 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.
+ */
+package io.helidon.integrations.oci.metrics.cdi;
+
+import io.helidon.config.Config;
+import io.helidon.integrations.oci.metrics.OciMetricsSupport;
+import io.helidon.microprofile.server.RoutingBuilders;
+
+import com.oracle.bmc.monitoring.Monitoring;
+import jakarta.annotation.Priority;
+import jakarta.enterprise.context.ApplicationScoped;
+import jakarta.enterprise.context.Initialized;
+import jakarta.enterprise.event.Observes;
+import jakarta.inject.Singleton;
+
+import static jakarta.interceptor.Interceptor.Priority.LIBRARY_BEFORE;
+
+/**
+ * OCI metrics integration CDI extension.
+ */
+
+// This bean is added to handle injection on the ObserverMethod as it does not work on an Extension class.
+@Singleton
+public class OciMetricsBean {
+
+    // Make Priority higher than MetricsCdiExtension so this will only start after MetricsCdiExtension has completed.
+    void registerOciMetrics(@Observes @Priority(LIBRARY_BEFORE + 20) @Initialized(ApplicationScoped.class) Object ignore,
+                            Config config, Monitoring monitoringClient) {
+        Config helidonConfig =  config.get("ocimetrics");
+        if (helidonConfig.exists()) {
+            OciMetricsSupport.Builder builder = OciMetricsSupport.builder()
+                    .config(helidonConfig)
+                    .monitoringClient(monitoringClient);
+
+            RoutingBuilders.create(helidonConfig)
+                    .routingBuilder()
+                    .register(builder.build());
+        }
+    }
+}

integrations/oci/metrics/cdi/src/main/java/io/helidon/integrations/oci/metrics/cdi/OciMetricsCdiExtension.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2022, 2023 Oracle and/or its affiliates.
+ *
+ * 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.
+ */
+package io.helidon.integrations.oci.metrics.cdi;
+
+import jakarta.enterprise.event.Observes;
+import jakarta.enterprise.inject.spi.BeforeBeanDiscovery;
+import jakarta.enterprise.inject.spi.Extension;
+
+/**
+ * OCI metrics integration CDI extension.
+ */
+public class OciMetricsCdiExtension implements Extension {
+
+    // A new bean is added to handle the Observer Method as injection does not work here
+    void addOciMetricsBean(@Observes BeforeBeanDiscovery event) {
+        event.addAnnotatedType(OciMetricsBean.class, OciMetricsBean.class.getName());
+    }
+}

integrations/oci/metrics/cdi/src/main/java/io/helidon/integrations/oci/metrics/cdi/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2022, 2023 Oracle and/or its affiliates.
+ *
+ * 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.
+ */
+
+/**
+ * Integrating with OCI Metrics Using CDI.
+ */
+package io.helidon.integrations.oci.metrics.cdi;

integrations/oci/metrics/cdi/src/main/java/module-info.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2022, 2023 Oracle and/or its affiliates.
+ *
+ * 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.
+ */
+
+/**
+ * Integrating with OCI Metrics Using CDI.
+ */
+module io.helidon.integrations.oci.metrics.cdi {
+    requires io.helidon.config.mp;
+    requires io.helidon.integrations.oci.metrics;
+    requires io.helidon.microprofile.config;
+    requires io.helidon.microprofile.server;
+
+    requires oci.java.sdk.monitoring;
+
+    requires jakarta.interceptor.api;
+    provides jakarta.enterprise.inject.spi.Extension with io.helidon.integrations.oci.metrics.cdi.OciMetricsCdiExtension;
+
+    opens io.helidon.integrations.oci.metrics.cdi to weld.core.impl, io.helidon.microprofile.cdi;
+
+    exports io.helidon.integrations.oci.metrics.cdi;
+}