H@H client with prometheus metrics

About

This is fork of original H@H 1.6.3 from e-hentai.org. You can compare this code with branch SRC_1.6.3

Some code used from this post (roundpixl)

docker-compose example located in docker-compose.example

Configuration

Added some cli args:

• --metrics-name=<value for labels> default: ""
• --metrics-user=<value for labels> default: ""
• --metrics-address=<listening ip> default: "127.0.0.1"
• --metrics-port=<metrics port> default: "9100"
• --enable-metrics=<true|false> default: "false"

Metrics

Name	Desc	Labels	Type
eh_hath_client_status	Client Status	user, name, host	gauge
eh_hath_client_uptime_seconds	Client uptime in seconds	user, name, host	counter
eh_hath_transfer_tx_files_count	Amount of files sent since last restart	user, name, host	counter
eh_hath_transfer_rx_files_count	Amount of files received since last restart	user, name, host	counter
eh_hath_transfer_tx_bytes	Bytes sent since last restart	user, name, host	counter
eh_hath_transfer_rx_bytes	Bytes received since last restart	user, name, host	counter
eh_hath_cache_size_limit_bytes	Reserved maximal cache size	user, name, host	gauge
eh_hath_cache_size_bytes	Cache size	user, name, host	gauge
eh_hath_cache_size_free_bytes	Free space reserved for H@H cache	user, name, host	gauge
eh_hath_cache_size_used_ratio	How much of the reserved cache is already in use	user, name, host	gauge
eh_hath_cache_file_count	Count of files currently in client cache	user, name, host	counter
eh_hath_connections_open_count	Currently open connections to the client	user, name, host	gauge
eh_hath_connections_max_count	Max connections	user, name, host	gauge
eh_hath_last_server_contact_epoch	Epoch timestamp of last server contact	user, name, host	counter

eh_hath_client_status values:

• 0 - Unknown
• 10 - Suspended
• 20 - Running

Label values:

• user - arg --metrics-name=$METRICS_CLIENT_NAME
• name - arg --metrics-user=$METRICS_USER_ID
• host - resolved from command server

Grafana sample dashboard

For more metrics you can also use EH_metrics project