Merge pull request #30826 from yhirano55/update_instrumentation_guide_for_active_storage

Update Instrumentation guide for Active Storage [ci skip]

guides/source/active_support_instrumentation.md

@@ -450,6 +450,53 @@ Active Job
 | `:adapter`   | QueueAdapter object processing the job |
 | `:job`       | Job object                             |
 
+Active Storage
+--------------
+
+### service_upload.active_storage
+
+| Key          | Value                        |
+| ------------ | ---------------------------- |
+| `:key`       | Secure token                 |
+| `:service`   | Name of the service          |
+| `:checksum`  | Checksum to ensure integrity |
+
+### service_streaming_download.active_storage
+
+| Key          | Value               |
+| ------------ | ------------------- |
+| `:key`       | Secure token        |
+| `:service`   | Name of the service |
+
+### service_download.active_storage
+
+| Key          | Value               |
+| ------------ | ------------------- |
+| `:key`       | Secure token        |
+| `:service`   | Name of the service |
+
+### service_delete.active_storage
+
+| Key          | Value               |
+| ------------ | ------------------- |
+| `:key`       | Secure token        |
+| `:service`   | Name of the service |
+
+### service_exist.active_storage
+
+| Key          | Value                       |
+| ------------ | --------------------------- |
+| `:key`       | Secure token                |
+| `:service`   | Name of the service         |
+| `:exist`     | File or blob exists or not  |
+
+### service_url.active_storage
+
+| Key          | Value               |
+| ------------ | ------------------- |
+| `:key`       | Secure token        |
+| `:service`   | Name of the service |
+| `:url`       | Generated url       |
 
 Railties
 --------