feat: implemented change requests

inspectit-gepard-agent/src/main/java/rocks/inspectit/gepard/agent/internal/properties/PropertiesResolver.java

@@ -8,6 +8,8 @@
 import java.util.Map;
 import java.util.Objects;
 import java.util.stream.Collectors;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * This resolver provides configurable properties or their default values. Currently, it is possible
@@ -35,6 +37,8 @@ public class PropertiesResolver {
       "inspectit.config.http.attributes.";
   public static final String ATTRIBUTES_ENV_PROPERTY_PREFIX = "INSPECTIT_CONFIG_HTTP_ATTRIBUTES_";
 
+  private static final Logger log = LoggerFactory.getLogger(PropertiesResolver.class);
+
   private PropertiesResolver() {}
 
   /**
@@ -107,14 +111,33 @@ public static Duration getPollingInterval() {
    */
   public static Map<String, String> getAttributes() {
 
-    Map<String, String> attributes = new HashMap<>(getAttributesFromEnv());
+    try {
+      Map<String, String> attributes = new HashMap<>(getAttributesFromEnv());
 
-    // Override with system properties where available
-    attributes.putAll(getAttributesFromSystemProperties());
+      // Override with system properties where available
+      attributes.putAll(getAttributesFromSystemProperties());
 
-    return attributes;
+      return attributes;
+    } catch (Exception e) {
+      log.error(
+          "Failed to load agent attributes. Continuing with empty attributes for failsafe initialization. Error: {}",
+          e.getMessage(),
+          e);
+      return new HashMap<>();
+    }
   }
 
+  /**
+   * Retrieves environment variables that start with {@code ATTRIBUTES_ENV_PROPERTY_PREFIX} and maps
+   * them to a new {@link Map} with transformed keys.
+   *
+   * <p>The method filters all environment variables to include only those with keys that start with
+   * {@code ATTRIBUTES_ENV_PROPERTY_PREFIX}. The prefix is removed, and the keys are converted to
+   * lowercase in the resulting map.
+   *
+   * @return a {@link Map} containing environment variables with the prefix removed and keys
+   *     transformed to lowercase.
+   */
   private static Map<String, String> getAttributesFromEnv() {
     return System.getenv().entrySet().stream()
         .filter(entry -> entry.getKey().startsWith(ATTRIBUTES_ENV_PROPERTY_PREFIX))
@@ -125,6 +148,16 @@ private static Map<String, String> getAttributesFromEnv() {
                 Map.Entry::getValue));
   }
 
+  /**
+   * Retrieves system properties that start with {@code ATTRIBUTES_ENV_PROPERTY_PREFIX} and maps
+   * them to a new {@link Map} with transformed keys.
+   *
+   * <p>This method filters the system properties to include only those with keys that start with
+   * {@code ATTRIBUTES_SYSTEM_PROPERTY_PREFIX}. The prefix is removed in the resulting map, with
+   * keys unchanged in case.
+   *
+   * @return a {@link Map} containing system properties with the prefix removed.
+   */
   private static Map<String, String> getAttributesFromSystemProperties() {
     return System.getProperties().entrySet().stream()
         .filter(entry -> entry.getKey().toString().startsWith(ATTRIBUTES_SYSTEM_PROPERTY_PREFIX))