Add FaaS attributes.

api/src/main/java/io/opentelemetry/trace/attributes/SemanticAttributes.java

@@ -291,5 +291,51 @@ public final class SemanticAttributes {
   public static final StringAttributeSetter THREAD_NAME =
       StringAttributeSetter.create("thread.name");
 
+  /** Type of the trigger on which the function is executed. */
+  public static final StringAttributeSetter FAAS_TRIGGER =
+      StringAttributeSetter.create("faas.trigger");
+  /** String containing the execution id of the function. */
+  public static final StringAttributeSetter FAAS_EXECUTION =
+      StringAttributeSetter.create("faas.execution");
+  /** Indicates that the serverless function is executed for the first time (aka cold start). */
+  public static final BooleanAttributeSetter FAAS_COLDSTART =
+      BooleanAttributeSetter.create("faas.coldstart");
+  /** The name of the invoked function. */
+  public static final StringAttributeSetter FAAS_INVOKED_NAME =
+      StringAttributeSetter.create("faas.invoked_name");
+  /** The cloud provider of the invoked function. */
+  public static final StringAttributeSetter FAAS_INVOKED_PROVIDER =
+      StringAttributeSetter.create("faas.invoked_provider");
+  /** The cloud region of the invoked function. */
+  public static final StringAttributeSetter FAAS_INVOKED_REGION =
+      StringAttributeSetter.create("faas.invoked_region");
+
+  /** For faas.trigger == datasource, the name of the source on which the operation was perfomed. */
+  public static final StringAttributeSetter FAAS_DOCUMENT_COLLECTION =
+      StringAttributeSetter.create("faas.document.collection");
+  /**
+   * For faas.trigger == datasource, describes the type of the operation that was performed on the
+   * data.
+   */
+  public static final StringAttributeSetter FAAS_DOCUMENT_OPERATION =
+      StringAttributeSetter.create("faas.document.operation");
+  /**
+   * For faas.trigger == datasource, a string containing the time when the data was accessed in the
+   * ISO 8601 format expressed in UTC.
+   */
+  public static final StringAttributeSetter FAAS_DOCUMENT_TIME =
+      StringAttributeSetter.create("faas.document.time");
+  /** For faas.trigger == datasource, the document name/table subjected to the operation. */
+  public static final StringAttributeSetter FAAS_DOCUMENT_NAME =
+      StringAttributeSetter.create("faas.document.name");
+
+  /**
+   * For faas.trigger == time, a string containing the function invocation time in the ISO 8601
+   * format expressed in UTC.
+   */
+  public static final StringAttributeSetter FAAS_TIME = StringAttributeSetter.create("faas.time");
+  /** For faas.trigger == time, a string containing the schedule period as Cron Expression. */
+  public static final StringAttributeSetter FAAS_CRON = StringAttributeSetter.create("faas.cron");
+
   private SemanticAttributes() {}
 }

sdk/common/src/main/java/io/opentelemetry/sdk/resources/ResourceAttributes.java

@@ -150,5 +150,16 @@ public final class ResourceAttributes {
   /** Zones are a sub set of the region connected through low-latency links. */
   public static final StringAttributeSetter CLOUD_ZONE = StringAttributeSetter.create("cloud.zone");
 
+  /** The name of the function being executed. */
+  public static final StringAttributeSetter FAAS_NAME = StringAttributeSetter.create("faas.name");
+  /** The unique ID of the function being executed. */
+  public static final StringAttributeSetter FAAS_ID = StringAttributeSetter.create("faas.id");
+  /** The version string of the function being executed. */
+  public static final StringAttributeSetter FAAS_VERSION =
+      StringAttributeSetter.create("faas.version");
+  /** The execution environment ID as a string. */
+  public static final StringAttributeSetter FAAS_INSTANCE =
+      StringAttributeSetter.create("faas.instance");
+
   private ResourceAttributes() {}
 }