docs: update the metrics as a table

Signed-off-by: SataQiu <[email protected]>

docs/user_guide/metrics.md

@@ -4,34 +4,40 @@ This doc contains all the metrics that Dragonfly components currently support. N
 
 ## Supernode
 
-- dragonfly_supernode_build_info{version, revision, goversion, arch, os} - build and version information of supernode.
-- dragonfly_supernode_http_requests_total{code, handler, method} - total number of http requests.
-- dragonfly_supernode_http_request_duration_seconds{code, handler, method} - http request latency in seconds.
-- dragonfly_supernode_http_request_size_bytes{code, handler, method} - http request size in bytes.
-- dragonfly_supernode_http_response_size_bytes{code, handler, method} - http response size in bytes.
-- dragonfly_supernode_peers{peer} - dragonfly peers, the label peer consists of the hostname and ip address of one peer.
-- dragonfly_supernode_tasks{cdnstatus} - dragonfly tasks.
-- dragonfly_supernode_tasks_registered_total{} - total times of registering new tasks. counter type.
-- dragonfly_supernode_dfgettasks{callsystem, status} - dragonfly dfget tasks.
-- dragonfly_supernode_dfgettasks_registered_total{callsystem} - total times of registering new dfgettasks. counter type.
-- dragonfly_supernode_dfgettasks_failed_total{callsystem} - total times of failed dfgettasks. counter type.
-- dragonfly_supernode_schedule_duration_milliseconds{peer} - duration for task scheduling in milliseconds.
-- dragonfly_supernode_cdn_trigger_total{} - total times of triggering cdn. counter type.
-- dragonfly_supernode_cdn_trigger_failed_total{} - total failed times of triggering cdn. counter type.
-- dragonfly_supernode_cdn_cache_hit_total{} - total times of hitting cdn cache. counter type.
-- dragonfly_supernode_cdn_download_total{} - total times of cdn downloading. counter type.
-- dragonfly_supernode_cdn_download_failed_total{} - total failure times of cdn downloading. counter type.
-- dragonfly_supernode_pieces_downloaded_size_bytes_total{} - total size of pieces downloaded from supernode in bytes. counter type.
-- dragonfly_supernode_gc_peers_total{} - total number of peers that have been garbage collected. counter type.
-- dragonfly_supernode_gc_tasks_total{} - total number of tasks that have been garbage collected. counter type.
+Name                                                                     | Description 
+------------------------------------------------------------------------ | -----------
+dragonfly_supernode_build_info{version, revision, goversion, arch, os}   | build and version information of supernode.
+dragonfly_supernode_http_requests_total{code, handler, method}           | total number of http requests.
+dragonfly_supernode_http_request_duration_seconds{code, handler, method} | http request latency in seconds.
+dragonfly_supernode_http_request_size_bytes{code, handler, method}       | http request size in bytes.
+dragonfly_supernode_http_response_size_bytes{code, handler, method}      | http response size in bytes.
+dragonfly_supernode_peers{peer}                                          | dragonfly peers, the label peer consists of the hostname and ip address of one peer.
+dragonfly_supernode_tasks{cdnstatus}                                     | dragonfly tasks.
+dragonfly_supernode_tasks_registered_total{}                             | total times of registering new tasks. counter type.
+dragonfly_supernode_dfgettasks{callsystem, status}                       | dragonfly dfget tasks.
+dragonfly_supernode_dfgettasks_registered_total{callsystem}              | total times of registering new dfgettasks. counter type.
+dragonfly_supernode_dfgettasks_failed_total{callsystem}                  | total times of failed dfgettasks. counter type.
+dragonfly_supernode_schedule_duration_milliseconds{peer}                 | duration for task scheduling in milliseconds.
+dragonfly_supernode_cdn_trigger_total{}                                  | total times of triggering cdn. counter type.
+dragonfly_supernode_cdn_trigger_failed_total{}                           | total failed times of triggering cdn. counter type.
+dragonfly_supernode_cdn_cache_hit_total{}                                | total times of hitting cdn cache. counter type.
+dragonfly_supernode_cdn_download_total{}                                 | total times of cdn downloading. counter type.
+dragonfly_supernode_cdn_download_failed_total{}                          | total failure times of cdn downloading. counter type.
+dragonfly_supernode_pieces_downloaded_size_bytes_total{}                 | total size of pieces downloaded from supernode in bytes. counter type.
+dragonfly_supernode_gc_peers_total{}                                     | total number of peers that have been garbage collected. counter type.
+dragonfly_supernode_gc_tasks_total{}                                     | total number of tasks that have been garbage collected. counter type.
 
 ## Dfdaemon
 
-- dragonfly_dfdaemon_build_info{version, revision, goversion, arch, os} - build and version information of dfdaemon.
+Name                                                                  | Description
+--------------------------------------------------------------------- | -----------
+dragonfly_dfdaemon_build_info{version, revision, goversion, arch, os} | build and version information of dfdaemon.
 
 ## Dfget
 
-- dragonfly_dfget_download_duration_seconds{callsystem, peer} - dfget download duration in seconds.
-- dragonfly_dfget_download_size_bytes_total{callsystem, peer} - total size of files downloaded by dfget in bytes. counter type.
-- dragonfly_dfget_download_total{callsystem, peer} - total times of dfget downloading. counter type.
-- dragonfly_dfget_download_failed_total{callsystem, peer, reason} - total times of failed dfget downloading. counter type.
+Name                                                            | Description
+--------------------------------------------------------------- | -----------
+dragonfly_dfget_download_duration_seconds{callsystem, peer}     | dfget download duration in seconds.
+dragonfly_dfget_download_size_bytes_total{callsystem, peer}     | total size of files downloaded by dfget in bytes. counter type.
+dragonfly_dfget_download_total{callsystem, peer}                | total times of dfget downloading. counter type.
+dragonfly_dfget_download_failed_total{callsystem, peer, reason} | total times of failed dfget downloading. counter type.