Refactor System.getenv to providers.environmentVariable.

buildSrc/src/main/kotlin/datadog.gradle-debug.gradle.kts

@@ -6,7 +6,7 @@ val ddGradleDebugEnabled = project.hasProperty("ddGradleDebug")
 val logPath = rootProject.layout.buildDirectory.file("datadog.gradle-debug.log")
 
 fun inferJdkFromJavaHome(javaHome: String?): String {
-  val effectiveJavaHome = javaHome ?: System.getenv("JAVA_HOME")
+  val effectiveJavaHome = javaHome ?: providers.environmentVariable("JAVA_HOME").orNull
   if (effectiveJavaHome == null) {
     throw IllegalStateException("JAVA_HOME is not set")
   }

dd-smoke-tests/armeria-grpc/application/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/debugger-integration-tests/build.gradle

@@ -34,7 +34,7 @@ tasks.withType(Test).configureEach {
 
   // TODO latest-jdk-app fails too often with a jgit failure, so disable until fixed
   //  def isLatestJdk = project.findProperty("testJvm") == latestJdk
-  //  def latestJavaHome = System.getenv("JAVA_${latestJdk}_HOME")
+  //  def latestJavaHome = providers.environmentVariable("JAVA_${latestJdk}_HOME").orNull
   //  if (isLatestJdk && latestJavaHome) {
   //    dependsOn buildLatestJdkApp
   //  }

dd-smoke-tests/debugger-integration-tests/latest-jdk-app/build.gradle

@@ -11,7 +11,7 @@ shadowJar {
 
 def latestJdk = 17
 
-def latestJdkHome = System.getenv("JAVA_${latestJdk}_HOME")
+def latestJdkHome = providers.environmentVariable("JAVA_${latestJdk}_HOME").orNull
 if (latestJdkHome != null) {
   tasks.withType(JavaCompile) {
     options.fork = true

dd-smoke-tests/kafka-3/application/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/log-injection/build.gradle

@@ -355,8 +355,10 @@ tasks.withType(Test).configureEach {
 
   // Runtime.getRuntime().availableProcessors() is used to scale the parallelism by default,
   // but it returns weird values in Gitlab/kubernetes, so fix to a specific value when available
-  def override = System.getenv("RUNTIME_AVAILABLE_PROCESSORS_OVERRIDE")
-  maxParallelForks = override?.toInteger() ?: Math.max(1, (Runtime.runtime.availableProcessors() / 2).toInteger())
+  maxParallelForks = providers.environmentVariable("RUNTIME_AVAILABLE_PROCESSORS_OVERRIDE")
+    .map { it.toInteger() }
+    .orElse(Math.max(1, (Runtime.runtime.availableProcessors() / 2).toInteger()))
+    .get()
 }
 
 

dd-smoke-tests/quarkus-native/application/settings.gradle

@@ -21,7 +21,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/quarkus-native/build.gradle

@@ -5,14 +5,14 @@ dependencies {
 }
 def testJvm = gradle.startParameter.projectProperties.getOrDefault('testJvm', '')
 // In order to support GraalVM 21 we need at least Java 17 for Gradle
-def java17Home = System.getenv('JAVA_17_HOME')
+def java17Home = providers.environmentVariable('JAVA_17_HOME').orNull
 // Check 'testJvm' gradle command parameter to be at least GraalVM 17
 def matcher = testJvm?.toLowerCase(Locale.ROOT) =~ /graalvm([0-9]+)/
 def version = matcher?.size() == 1 ? Integer.parseInt(matcher[0][1]) : -1
 if (version >= 17) {
   // Retrieve GRAALVM_HOME from JVM environment variables
   def testJvmEnv = "JAVA_${testJvm}_HOME"
-  def testJvmHome = System.getenv(testJvmEnv)
+  def testJvmHome = providers.environmentVariable(testJvmEnv).orNull
   if (!testJvmHome) {
     throw new GradleException("Unable to find launcher for Java '$testJvm'. Have you set '$testJvmEnv'?")
   }

dd-smoke-tests/quarkus/application/settings.gradle

@@ -21,7 +21,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/rum/wildfly-15/rum-ear/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/spring-boot-2.7-webflux/application/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/spring-boot-3.0-native/application/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/spring-boot-3.0-native/build.gradle

@@ -9,14 +9,14 @@ dependencies {
 
 def testJvm = gradle.startParameter.projectProperties.getOrDefault('testJvm', '')
 // In order to support GraalVM 21 we need at least Java 17 for Gradle
-def java17Home = System.getenv('JAVA_17_HOME')
+def java17Home = providers.environmentVariable('JAVA_17_HOME').orNull
 // Check 'testJvm' gradle command parameter to be at least GraalVM 17
 def matcher = testJvm?.toLowerCase(Locale.ROOT) =~ /graalvm([0-9]+)/
 def version = matcher?.size() == 1 ? Integer.parseInt(matcher[0][1]) : -1
 if (version >= 17) {
   // Retrieve GRAALVM_HOME from JVM environment variables
   def testJvmEnv = "JAVA_${testJvm}_HOME"
-  def testJvmHome = System.getenv(testJvmEnv)
+  def testJvmHome = providers.environmentVariable(testJvmEnv).orNull
   if (!testJvmHome) {
     throw new GradleException("Unable to find launcher for Java '$testJvm'. Have you set '$testJvmEnv'?")
   }

dd-smoke-tests/spring-boot-3.0-webflux/application/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/spring-boot-3.0-webmvc/application/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/spring-boot-3.3-webmvc/application/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

dd-smoke-tests/wildfly/spring-ear/settings.gradle

@@ -18,7 +18,7 @@ pluginManagement {
   }
 }
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 
 // Don't pollute the dependency cache with the build cache
 if (isCI) {

gradle/configure_tests.gradle

@@ -132,7 +132,7 @@ tasks.withType(Test) {
   // https://docs.gradle.com/develocity/flaky-test-detection/
   // https://docs.gradle.com/develocity/gradle-plugin/current/#test_retry
   develocity.testRetry {
-    if (System.getenv().containsKey("CI")) {
+    if (providers.environmentVariable("CI").isPresent()) {
       maxRetries = 3
     }
   }

gradle/java_no_deps.gradle

@@ -20,7 +20,7 @@ ext.testcontainersLimit = gradle.sharedServices.registerIfAbsent("testcontainers
 }
 
 // Task for tests that want to run forked in their own separate JVM
-if (tasks.matching({it.name == 'forkedTest'}).empty) {
+if (tasks.matching({ it.name == 'forkedTest' }).empty) {
   tasks.register('forkedTest', Test).configure {
     useJUnitPlatform()
   }
@@ -154,18 +154,22 @@ def currentJavaHomePath = getJavaHomePath(System.getProperty("java.home"))
 project.afterEvaluate {
   def testJvm = gradle.startParameter.projectProperties["testJvm"]
   def javaTestLauncher = null as Provider<JavaLauncher>
+
   // "stable" is calculated as the largest X found in JAVA_X_HOME
   if (testJvm == "stable") {
-    def javaVersions = System.getenv()
-      .findAll { it.key =~ /^JAVA_[0-9]+_HOME$/ }
-      .collect { (it.key =~ /^JAVA_(\d+)_HOME$/)[0][1] as Integer }
+    def javaVersions = providers.environmentVariablesPrefixedBy("JAVA_").map { javaHomes ->
+      javaHomes
+        .findAll { it.key =~ /^JAVA_[0-9]+_HOME$/ }
+        .collect { (it.key =~ /^JAVA_(\d+)_HOME$/)[0][1] as Integer }
+    }.get()
 
     if (javaVersions.isEmpty()) {
       throw new GradleException("No valid JAVA_X_HOME environment variables found.")
     }
 
     testJvm = javaVersions.max().toString()
   }
+
   if (testJvm) {
     def testJvmHomePath
     if (Files.exists(Paths.get(testJvm))) {
@@ -177,7 +181,7 @@ project.afterEvaluate {
       }
       def testJvmLanguageVersion = matcher.group(2) as Integer
       def testJvmEnv = "JAVA_${testJvm}_HOME"
-      def testJvmHome = System.getenv(testJvmEnv)
+      def testJvmHome = providers.environmentVariable(testJvmEnv).orNull
       if (!testJvmHome) {
         throw new GradleException("Unable to find launcher for Java '$testJvm'. Have you set '$testJvmEnv'?")
       }

gradle/maven-pom.gradle

@@ -1,6 +1,3 @@
-import org.gradle.api.publish.maven.MavenPom
-import org.gradle.api.publish.maven.tasks.GenerateMavenPom
-
 /** Applies the common elements to our generated POM files */
 tasks.withType(GenerateMavenPom).configureEach {
   doFirst {

gradle/publish.gradle

@@ -12,7 +12,7 @@ apply plugin: 'signing'
 apply from: "$rootDir/gradle/version.gradle"
 apply from: "$rootDir/gradle/maven-pom.gradle"
 
-def isGitlabCI = System.getenv("GITLAB_CI") != null
+def isGitlabCI = providers.environmentVariable("GITLAB_CI").isPresent()
 
 // define in ~/.gradle/gradle.properties to override for testing
 def forceLocal = project.hasProperty('forceLocal') && forceLocal
@@ -64,13 +64,13 @@ if (project.plugins.hasPlugin('com.gradleup.shadow')) {
 }
 
 signing {
-  useInMemoryPgpKeys(System.getenv("GPG_PRIVATE_KEY"), System.getenv("GPG_PASSWORD"))
+  useInMemoryPgpKeys(providers.environmentVariable("GPG_PRIVATE_KEY").orNull, providers.environmentVariable("GPG_PASSWORD").orNull)
   sign publishing.publications.maven
 }
 
 tasks.withType(Sign).configureEach {
   // Only sign in Gitlab CI
-  onlyIf { isGitlabCI || (System.getenv("GPG_PRIVATE_KEY") != null && System.getenv("GPG_PASSWORD") != null) }
+  onlyIf { isGitlabCI || (providers.environmentVariable("GPG_PRIVATE_KEY").isPresent() && providers.environmentVariable("GPG_PASSWORD").isPresent()) }
 }
 
 /**
@@ -81,11 +81,11 @@ gradle.taskGraph.whenReady { TaskExecutionGraph taskGraph ->
   if (taskGraph.hasTask(publish) || taskGraph.hasTask("publishToSonatype")) {
     assert project.findProperty("removeJarVersionNumbers") != true
     if (taskGraph.hasTask("publishToSonatype")) {
-      assert System.getenv("MAVEN_CENTRAL_USERNAME") != null
-      assert System.getenv("MAVEN_CENTRAL_PASSWORD") != null
+      assert providers.environmentVariable("MAVEN_CENTRAL_USERNAME").isPresent()
+      assert providers.environmentVariable("MAVEN_CENTRAL_PASSWORD").isPresent()
       if (isCI) {
-        assert System.getenv("GPG_PRIVATE_KEY") != null
-        assert System.getenv("GPG_PASSWORD") != null
+        assert providers.environmentVariable("GPG_PRIVATE_KEY").isPresent()
+        assert providers.environmentVariable("GPG_PASSWORD").isPresent()
       }
     }
   }

internal-api/internal-api-9/build.gradle.kts

@@ -1,4 +1,5 @@
 import groovy.lang.Closure
+import java.nio.file.Paths
 
 plugins {
   `java-library`
@@ -56,5 +57,5 @@ idea {
 jmh {
   jmhVersion = libs.versions.jmh.get()
   duplicateClassesStrategy = DuplicatesStrategy.EXCLUDE
-  jvm = System.getenv("JAVA_11_HOME") + "/bin/java"
+  jvm = providers.environmentVariable("JAVA_11_HOME").map { Paths.get(it, "bin", "java").toString() }
 }

test-published-dependencies/build.gradle

@@ -5,7 +5,7 @@ plugins {
 def sharedConfigDirectory = "$rootDir/../gradle"
 rootProject.ext.sharedConfigDirectory = sharedConfigDirectory
 
-def isCI = System.getenv("CI") != null
+def isCI = providers.environmentVariable("CI").isPresent()
 def versionFromFile = file("$rootDir/${isCI ? '../workspace' : '..'}/build/main.version").readLines().head()
 
 allprojects {