feat(env): Migrate config to environment component

Author: PerfectSlayer

internal-api/src/main/java/datadog/trace/api/Config.java

@@ -633,6 +633,7 @@
 import datadog.environment.EnvironmentVariables;
 import datadog.environment.JavaVirtualMachine;
 import datadog.environment.OperatingSystem;
+import datadog.environment.SystemProperties;
 import datadog.trace.api.civisibility.CiVisibilityWellKnownTags;
 import datadog.trace.api.config.GeneralConfig;
 import datadog.trace.api.config.ProfilingConfig;
@@ -1237,7 +1238,7 @@ private Config(final ConfigProvider configProvider, final InstrumenterConfig ins
     configFileStatus = configProvider.getConfigFileStatus();
     runtimeIdEnabled =
         configProvider.getBoolean(RUNTIME_ID_ENABLED, true, RUNTIME_METRICS_RUNTIME_ID_ENABLED);
-    runtimeVersion = System.getProperty("java.version", "unknown");
+    runtimeVersion = SystemProperties.getOrDefault("java.version", "unknown");
 
     // Note: We do not want APiKey to be loaded from property for security reasons
     // Note: we do not use defined default here
@@ -3398,7 +3399,7 @@ public static boolean isDatadogProfilerSafeInCurrentEnvironment() {
     // don't want to put this logic (which will evolve) in the public ProfilingConfig, and can't
     // access Platform there
     if (!JavaVirtualMachine.isJ9() && isJavaVersion(8)) {
-      String arch = System.getProperty("os.arch");
+      String arch = SystemProperties.get("os.arch");
       if ("aarch64".equalsIgnoreCase(arch) || "arm64".equalsIgnoreCase(arch)) {
         return false;
       }
@@ -4442,12 +4443,12 @@ public CiVisibilityWellKnownTags getCiVisibilityWellKnownTags() {
         getRuntimeId(),
         getEnv(),
         LANGUAGE_TAG_VALUE,
-        System.getProperty("java.runtime.name"),
-        System.getProperty("java.version"),
-        System.getProperty("java.vendor"),
-        System.getProperty("os.arch"),
-        System.getProperty("os.name"),
-        System.getProperty("os.version"),
+        SystemProperties.get("java.runtime.name"),
+        SystemProperties.get("java.version"),
+        SystemProperties.get("java.vendor"),
+        SystemProperties.get("os.arch"),
+        SystemProperties.get("os.name"),
+        SystemProperties.get("os.version"),
         isServiceNameSetByUser() ? "true" : "false");
   }
 
@@ -5209,7 +5210,7 @@ private static String getProp(String name) {
   }
 
   private static String getProp(String name, String def) {
-    String value = System.getProperty(name, def);
+    String value = SystemProperties.getOrDefault(name, def);
     if (value != null) {
       ConfigCollector.get().put(name, value, ConfigOrigin.JVM_PROP);
     }

internal-api/src/main/java/datadog/trace/api/Platform.java

@@ -5,6 +5,8 @@
 import static datadog.environment.JavaVirtualMachine.isJavaVersionAtLeast;
 import static datadog.environment.JavaVirtualMachine.isOracleJDK8;
 
+import datadog.environment.SystemProperties;
+
 /**
  * This class is used early on during premain; it must not touch features like JMX or JUL in case
  * they trigger early loading/binding.
@@ -51,7 +53,7 @@ private static boolean checkForJfr() {
 
   private static boolean checkForNativeImageBuilder() {
     try {
-      return "org.graalvm.nativeimage.builder".equals(System.getProperty("jdk.module.main"));
+      return "org.graalvm.nativeimage.builder".equals(SystemProperties.get("jdk.module.main"));
     } catch (Throwable e) {
       return false;
     }

internal-api/src/main/java/datadog/trace/api/env/CapturedEnvironment.java

@@ -1,5 +1,6 @@
 package datadog.trace.api.env;
 
+import datadog.environment.EnvironmentVariables;
 import datadog.environment.JavaVirtualMachine;
 import datadog.trace.api.config.GeneralConfig;
 import java.io.File;
@@ -77,8 +78,8 @@ static void useFixedProcessInfo(final ProcessInfo processInfo) {
    * autodetection will return either the JAR filename or the java main class.
    */
   private String autodetectServiceName() {
-    String inAas = System.getenv("DD_AZURE_APP_SERVICES");
-    String siteName = System.getenv("WEBSITE_SITE_NAME");
+    String inAas = EnvironmentVariables.get("DD_AZURE_APP_SERVICES");
+    String siteName = EnvironmentVariables.get("WEBSITE_SITE_NAME");
 
     if (("true".equalsIgnoreCase(inAas) || "1".equals(inAas)) && siteName != null) {
       return siteName;