Replace global dependency management with version catalog (#6080)

Completely removes dependencies.gradle which acted as a global dependency management file for the whole build.

We previously introduced a version catalog and these changes make full use of it. Individual dependency versions are managed in the catalog and the dependencies are referenced using the type-safe API where they are declared. This should alleviate confusion contributors have about where to put versions and how to declare dependencies. It also avoids needless dependency management in all sub-projects even for dependencies that are only used in one place. 

This also removes the global dependency management via the BOMs that were declared in dependencies.gradle. Instead, the BOMs are declared in the projects that use them at the appropriate scope. An exception to this is the JUnit BOM because each 'java-library' project should have tests and use JUnit, so it is added to all of them from the root build.gradle.

Author: shakuzen

build.gradle

@@ -57,7 +57,6 @@ apply plugin: 'com.netflix.nebula.release'
 release.defaultVersionStrategy = nebula.plugin.release.git.opinion.Strategies.SNAPSHOT
 
 apply plugin: 'io.github.gradle-nexus.publish-plugin'
-apply from: 'dependencies.gradle'
 
 allprojects {
     group = 'io.micrometer'
@@ -87,6 +86,7 @@ subprojects {
         } else {
             apply plugin: 'java-library'
             dependencies {
+                testImplementation platform(libs.junitBom)
                 testImplementation libs.junitJupiter
                 testRuntimeOnly libs.junitPlatformLauncher
             }

dependencies.gradle

@@ -41,28 +41,30 @@ compileTestJava {
 
 dependencies {
     implementation project(':micrometer-core')
-    implementation 'io.micrometer:context-propagation'
-    implementation 'ch.qos.logback:logback-classic'
-    implementation 'org.slf4j:slf4j-api'
+    implementation libs.contextPropagation
+    implementation libs.logback12
+    implementation libs.slf4jApi
 
     testImplementation project(':micrometer-test')
     testImplementation project(':micrometer-observation-test')
     testImplementation project(':micrometer-registry-otlp')
     testImplementation libs.aspectjweaver
-    testImplementation 'org.assertj:assertj-core'
+    testImplementation libs.assertj
     // needed for OtlpMeterRegistryCustomizationTest
     testRuntimeOnly libs.okhttp
     testImplementation(libs.spring6.context)
+    testImplementation platform(libs.reactorBom)
     testImplementation 'io.projectreactor:reactor-core'
     testImplementation 'io.projectreactor:reactor-test'
+    testImplementation platform(libs.nettyBom)
     testImplementation 'io.netty:netty-transport'
-    testImplementation 'org.apache.httpcomponents.client5:httpclient5'
+    testImplementation libs.httpcomponents.client5
     testImplementation libs.javalin
     // Kafka binder IT dependencies
-    testImplementation 'org.apache.kafka:kafka-clients'
-    testImplementation 'org.testcontainers:testcontainers'
-    testImplementation 'org.testcontainers:junit-jupiter'
-    testImplementation 'org.testcontainers:kafka'
+    testImplementation libs.kafkaClients
+    testImplementation libs.testcontainers
+    testImplementation libs.testcontainers.junitJupiter
+    testImplementation libs.testcontainers.kafka
 }
 
 antora {

docs/build.gradle

@@ -114,8 +114,6 @@ grpcApi = { module = "io.grpc:grpc-api", version.ref = "grpc" }
 grpcCore = { module = "io.grpc:grpc-core", version.ref = "grpc" }
 grpcInprocess = { module = "io.grpc:grpc-inprocess", version.ref = "grpc" }
 grpcServices = { module = "io.grpc:grpc-services", version.ref = "grpc" }
-grpcStubs = { module = "io.grpc:grpc-stubs", version.ref = "grpc" }
-grpcAlts = { module = "io.grpc:grpc-alts", version.ref = "grpc" }
 grpcTestingProto = { module = "io.grpc:grpc-testing-proto", version.ref = "grpc" }
 grpcKotlinStub = { module = "io.grpc:grpc-kotlin-stub", version.ref = "grpcKotlin" }
 guava = { module = "com.google.guava:guava", version.ref = "guava" }

gradle/libs.versions.toml

@@ -1,7 +1,7 @@
 dependencies {
     api project(':micrometer-core')
 
-    implementation 'org.slf4j:slf4j-api'
+    implementation libs.slf4jApi
 
     testImplementation project(':micrometer-test')
     testImplementation libs.mockitoCore5

implementations/micrometer-registry-appoptics/build.gradle

@@ -1,7 +1,7 @@
 dependencies {
     api project(':micrometer-core')
 
-    api 'com.netflix.spectator:spectator-reg-atlas'
+    api libs.spectatorAtlas
 
     testImplementation project(':micrometer-test')
 }

implementations/micrometer-registry-atlas/build.gradle

@@ -1,10 +1,10 @@
 dependencies {
     api project(':micrometer-core')
 
-    api 'com.microsoft.azure:applicationinsights-core'
-    implementation 'org.slf4j:slf4j-api'
+    api libs.applicationInsights
+    implementation libs.slf4jApi
 
     testImplementation project(':micrometer-test')
     // required by jdk 9+
-    testRuntimeOnly 'javax.xml.bind:jaxb-api'
+    testRuntimeOnly libs.jaxbApi
 }

implementations/micrometer-registry-azure-monitor/build.gradle

@@ -3,8 +3,8 @@ description = 'MeterRegistry implementation for publishing to CloudWatch using t
 dependencies {
     api project(':micrometer-core')
 
-    api 'software.amazon.awssdk:cloudwatch'
-    implementation 'org.slf4j:slf4j-api'
+    api libs.cloudwatch2
+    implementation libs.slf4jApi
 
     testImplementation project(':micrometer-test')
     testImplementation libs.mockitoCore5

implementations/micrometer-registry-cloudwatch2/build.gradle

@@ -1,7 +1,7 @@
 dependencies {
     api project(':micrometer-core')
 
-    implementation 'org.slf4j:slf4j-api'
+    implementation libs.slf4jApi
 
     testImplementation project(':micrometer-test')
     testImplementation libs.mockitoCore5

implementations/micrometer-registry-datadog/build.gradle

@@ -1,12 +1,12 @@
 dependencies {
     api project(':micrometer-core')
 
-    implementation 'org.slf4j:slf4j-api'
+    implementation libs.slf4jApi
 
-    implementation 'com.dynatrace.metric.util:dynatrace-metric-utils-java'
+    implementation(libs.dynatraceUtils)
 
     testImplementation project(':micrometer-test')
     testImplementation libs.mockitoCore5
-    testImplementation 'com.fasterxml.jackson.core:jackson-databind'
-    testImplementation 'org.awaitility:awaitility'
+    testImplementation libs.jacksonDatabind
+    testImplementation libs.awaitility
 }