Metrics 4.0 implementation

examples/metrics/exemplar/pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2021 Oracle and/or its affiliates.
+    Copyright (c) 2021, 2022 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.
@@ -15,7 +15,8 @@
     See the License for the specific language governing permissions and
     limitations under the License.
 
---><project xmlns="http://maven.apache.org/POM/4.0.0"
+-->
+<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
@@ -62,6 +63,11 @@
             <artifactId>helidon-tracing-zipkin</artifactId>
             <scope>runtime</scope>
         </dependency>
+        <dependency>
+            <groupId>io.helidon.config</groupId>
+            <artifactId>helidon-config-yaml</artifactId>
+            <scope>runtime</scope>
+        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>

examples/metrics/filtering/se/pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2021 Oracle and/or its affiliates.
+    Copyright (c) 2021, 2022 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.
@@ -46,6 +46,11 @@
             <groupId>io.helidon.metrics</groupId>
             <artifactId>helidon-metrics</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.helidon.config</groupId>
+            <artifactId>helidon-config-yaml</artifactId>
+            <scope>runtime</scope>
+        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>

examples/metrics/kpi/pom.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
 
-    Copyright (c) 2021 Oracle and/or its affiliates.
+    Copyright (c) 2021, 2022 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.
@@ -46,6 +46,11 @@
             <groupId>io.helidon.metrics</groupId>
             <artifactId>helidon-metrics</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.helidon.config</groupId>
+            <artifactId>helidon-config-yaml</artifactId>
+            <scope>runtime</scope>
+        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>

metrics/api/src/main/java/io/helidon/metrics/api/AbstractRegistry.java

@@ -477,6 +477,16 @@ public <T extends Metric> T getMetric(MetricID metricID, Class<T> asType) {
         return asType.cast(metricStore.metric(metricID));
     }
 
+    /**
+     * Update the registry settings for this registry.
+     *
+     * @param registrySettings new settings to use going forward
+     */
+    public void update(RegistrySettings registrySettings) {
+        metricStore.update(registrySettings);
+    }
+
+
     /**
      * Returns type of this registry.
      *

metrics/api/src/main/java/io/helidon/metrics/api/MetricStore.java

@@ -67,7 +67,7 @@ class MetricStore<M extends HelidonMetric> {
     private final Map<String, List<MetricID>> allMetricIDsByName = new ConcurrentHashMap<>();
     private final Map<String, Metadata> allMetadata = new ConcurrentHashMap<>(); // metric name -> metadata
 
-    private final RegistrySettings registrySettings;
+    private RegistrySettings registrySettings;
     private final Map<MetricType, BiFunction<String, Metadata, M>> metricFactories;
     private final AbstractRegistry.GaugeFactory.SupplierBased supplierBasedGaugeFactory;
     private final AbstractRegistry.GaugeFactory.FunctionBased functionBasedGaugeFactory;
@@ -108,6 +108,10 @@ private MetricStore(RegistrySettings registrySettings,
         this.toImpl = toImpl;
     }
 
+    void update(RegistrySettings registrySettings) {
+        this.registrySettings = registrySettings;
+    }
+
     <U extends Metric> U getOrRegisterMetric(MetricID metricID, Class<U> clazz) {
         return getOrRegisterMetric(metricID.getName(),
                                    clazz,

metrics/metrics/src/main/java/io/helidon/metrics/Registry.java

@@ -57,12 +57,9 @@ public static Registry create(Type type, RegistrySettings registrySettings) {
         return new Registry(type, registrySettings);
     }
 
-    /**
-     * Update the registry settings for this registry.
-     *
-     * @param registrySettings new settings to use going forward
-     */
+    @Override
     public void update(RegistrySettings registrySettings) {
+        super.update(registrySettings);
         this.registrySettings.set(registrySettings);
     }