Initial Observability extension - devservices, devresources, LGTM

bom/application/pom.xml

@@ -226,6 +226,8 @@
         <mutiny-zero.version>1.0.0</mutiny-zero.version>
         <pulsar-client.version>3.0.0</pulsar-client.version>
         <async-http-client.version>2.12.3</async-http-client.version>
+        <!-- keep in-sync, if possible, with Micrometer registry Prometheus -->
+        <prometheus.version>0.16.0</prometheus.version>
         <!-- Dev UI -->
         <importmap.version>1.0.10</importmap.version>
     </properties>
@@ -481,6 +483,18 @@
                 <scope>import</scope>
             </dependency>
 
+            <!-- Prometheus -->
+            <dependency>
+                <groupId>io.prometheus</groupId>
+                <artifactId>simpleclient</artifactId>
+                <version>${prometheus.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.prometheus</groupId>
+                <artifactId>simpleclient_common</artifactId>
+                <version>${prometheus.version}</version>
+            </dependency>
+
             <!-- Quarkus core -->
 
             <dependency>
@@ -2962,6 +2976,36 @@
                 <artifactId>quarkus-virtual-threads-deployment</artifactId>
                 <version>${project.version}</version>
             </dependency>
+            <dependency>
+                <groupId>io.quarkus</groupId>
+                <artifactId>quarkus-observability-devservices-common</artifactId>
+                <version>${project.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.quarkus</groupId>
+                <artifactId>quarkus-observability-devservices</artifactId>
+                <version>${project.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.quarkus</groupId>
+                <artifactId>quarkus-observability-devservices-lgtm</artifactId>
+                <version>${project.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.quarkus</groupId>
+                <artifactId>quarkus-observability-testcontainers</artifactId>
+                <version>${project.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.quarkus</groupId>
+                <artifactId>quarkus-observability-devresource-common</artifactId>
+                <version>${project.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>io.quarkus</groupId>
+                <artifactId>quarkus-observability-devresource-lgtm</artifactId>
+                <version>${project.version}</version>
+            </dependency>
 
             <!-- Quarkus test dependencies -->
             <dependency>

core/deployment/src/main/java/io/quarkus/deployment/Feature.java

@@ -68,6 +68,7 @@ public enum Feature {
     NARAYANA_LRA,
     NARAYANA_STM,
     NEO4J,
+    OBSERVABILITY,
     OIDC,
     OIDC_CLIENT,
     OIDC_CLIENT_FILTER,

core/runtime/src/main/java/io/quarkus/runtime/util/EnumerationUtil.java

@@ -0,0 +1,69 @@
+package io.quarkus.runtime.util;
+
+import java.util.Enumeration;
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+import java.util.Objects;
+import java.util.Spliterator;
+import java.util.function.Consumer;
+import java.util.stream.Stream;
+
+/**
+ * Transform to "old school" Enumeration from Iterator/Spliterator/Stream
+ */
+public class EnumerationUtil {
+    public static <T> Enumeration<T> from(Iterator<T> iterator) {
+        Objects.requireNonNull(iterator);
+
+        return new Enumeration<T>() {
+            @Override
+            public boolean hasMoreElements() {
+                return iterator.hasNext();
+            }
+
+            @Override
+            public T nextElement() {
+                return iterator.next();
+            }
+        };
+    }
+
+    public static <T> Enumeration<T> from(Spliterator<T> spliterator) {
+        Objects.requireNonNull(spliterator);
+
+        class Adapter implements Enumeration<T>, Consumer<T> {
+            boolean valueReady;
+            T nextElement;
+
+            public void accept(T t) {
+                this.valueReady = true;
+                this.nextElement = t;
+            }
+
+            public boolean hasMoreElements() {
+                if (!this.valueReady) {
+                    spliterator.tryAdvance(this);
+                }
+
+                return this.valueReady;
+            }
+
+            public T nextElement() {
+                if (!this.valueReady && !this.hasMoreElements()) {
+                    throw new NoSuchElementException();
+                } else {
+                    this.valueReady = false;
+                    T t = this.nextElement;
+                    this.nextElement = null;
+                    return t;
+                }
+            }
+        }
+
+        return new Adapter();
+    }
+
+    public static <T> Enumeration<T> from(Stream<T> stream) {
+        return from(stream.spliterator());
+    }
+}

devtools/bom-descriptor-json/pom.xml

@@ -1526,6 +1526,19 @@
                         </exclusion>
                     </exclusions>
                 </dependency>
+                <dependency>
+                    <groupId>io.quarkus</groupId>
+                    <artifactId>quarkus-observability-devservices</artifactId>
+                    <version>${project.version}</version>
+                    <type>pom</type>
+                    <scope>test</scope>
+                    <exclusions>
+                        <exclusion>
+                            <groupId>*</groupId>
+                            <artifactId>*</artifactId>
+                        </exclusion>
+                    </exclusions>
+                </dependency>
                 <dependency>
                     <groupId>io.quarkus</groupId>
                     <artifactId>quarkus-oidc</artifactId>

docs/pom.xml

@@ -1542,6 +1542,19 @@
                 </exclusion>
             </exclusions>
         </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-observability-devservices-deployment</artifactId>
+            <version>${project.version}</version>
+            <type>pom</type>
+            <scope>test</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
         <dependency>
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-oidc-deployment</artifactId>

docs/src/main/asciidoc/validation.adoc

@@ -130,7 +130,7 @@ public class BookResource {
 ----
 <1> The `Validator` instance is injected via CDI.
 
-Yes it does not compile, `Result` is missing, but we will add it very soon.
+Yes it does not compile, `QueryResult` is missing, but we will add it very soon.
 
 The method parameter (`book`) is created from the JSON payload automatically.
 
@@ -139,7 +139,7 @@ It returns a set of violations.
 If this set is empty, it means the object is valid.
 In case of failures, the messages are concatenated and sent back to the browser.
 
-Let's now create the `Result` class as an inner class:
+Let's now create the `QueryResult` class as an inner class:
 
 [source, java]
 ----

extensions/devservices/common/src/main/java/io/quarkus/devservices/common/ContainerLocator.java

@@ -1,7 +1,9 @@
 package io.quarkus.devservices.common;
 
 import java.util.Arrays;
+import java.util.Objects;
 import java.util.Optional;
+import java.util.function.BiConsumer;
 import java.util.function.BiPredicate;
 
 import org.jboss.logging.Logger;
@@ -61,6 +63,30 @@ public Optional<ContainerAddress> locateContainer(String serviceName, boolean sh
         }
     }
 
+    /**
+     * @return container id, if exists
+     */
+    public Optional<String> locateContainer(String serviceName, boolean shared, LaunchMode launchMode,
+            BiConsumer<Integer, ContainerAddress> consumer) {
+        if (shared && launchMode == LaunchMode.DEVELOPMENT) {
+            return lookup(serviceName)
+                    .map(container -> {
+                        Arrays.stream(container.getPorts())
+                                .filter(cp -> Objects.nonNull(cp.getPublicPort()) && Objects.nonNull(cp.getPrivatePort()))
+                                .forEach(cp -> {
+                                    ContainerAddress containerAddress = new ContainerAddress(
+                                            container.getId(),
+                                            DockerClientFactory.instance().dockerHostIpAddress(),
+                                            cp.getPublicPort());
+                                    consumer.accept(cp.getPrivatePort(), containerAddress);
+                                });
+                        return container.getId();
+                    });
+        } else {
+            return Optional.empty();
+        }
+    }
+
     public Optional<Integer> locatePublicPort(String serviceName, boolean shared, LaunchMode launchMode, int privatePort) {
         if (shared && launchMode == LaunchMode.DEVELOPMENT) {
             return lookup(serviceName)

extensions/observability-devservices/common/pom.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>
+        <artifactId>quarkus-observability-devservices-parent</artifactId>
+        <groupId>io.quarkus</groupId>
+        <version>999-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>quarkus-observability-devservices-common</artifactId>
+    <name>Quarkus - Observability Devservices - Common</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-core</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>io.smallrye.config</groupId>
+            <artifactId>smallrye-config-core</artifactId>
+            <scope>provided</scope>
+        </dependency>
+    </dependencies>
+</project>

extensions/observability-devservices/common/src/main/java/io/quarkus/observability/common/ContainerConstants.java

@@ -0,0 +1,15 @@
+package io.quarkus.observability.common;
+
+public final class ContainerConstants {
+
+    // Images
+
+    public static final String LGTM = "docker.io/grafana/otel-lgtm:0.2.0";
+
+    // Ports
+
+    public static final int GRAFANA_PORT = 3000;
+
+    public static final int OTEL_GRPC_EXPORTER_PORT = 4317;
+    public static final int OTEL_HTTP_EXPORTER_PORT = 4318;
+}

extensions/observability-devservices/common/src/main/java/io/quarkus/observability/common/config/AbstractContainerConfig.java

@@ -0,0 +1,51 @@
+package io.quarkus.observability.common.config;
+
+import java.util.Locale;
+import java.util.Optional;
+import java.util.Set;
+
+public abstract class AbstractContainerConfig implements ContainerConfig {
+
+    private final String imageName;
+    private final boolean shared;
+
+    public AbstractContainerConfig(String imageName) {
+        this(imageName, true);
+    }
+
+    public AbstractContainerConfig(String imageName, boolean shared) {
+        this.imageName = imageName;
+        this.shared = shared;
+    }
+
+    @Override
+    public boolean enabled() {
+        return true;
+    }
+
+    @Override
+    public String imageName() {
+        return imageName;
+    }
+
+    @Override
+    public boolean shared() {
+        return shared;
+    }
+
+    @Override
+    public Optional<Set<String>> networkAliases() {
+        return Optional.empty();
+    }
+
+    @Override
+    public String label() {
+        String sn = getClass().getSimpleName().toLowerCase(Locale.ROOT);
+        return "quarkus-dev-resource-" + sn;
+    }
+
+    @Override
+    public String serviceName() {
+        return "quarkus";
+    }
+}