Add support for Shelly 3EM & 3EM-PRO

[gmoscalu]

Hi,

I tested the exporter on a Shelly 3EM & a Shelly 3EM PRO.

For the 3EM, i got :

root@Ubuntu-Tools:~# curl -s "http://localhost:7978/probe?target=10.10.200.40"
# HELP shelly_api_status_latency_ms Request latency for the status API in milliseconds
# TYPE shelly_api_status_latency_ms gauge
shelly_api_status_latency_ms{device="485519D74AEF"} 38
# HELP shelly_bat Show the current battery status in percentage
# TYPE shelly_bat gauge
shelly_bat{device="485519D74AEF"} 0
# HELP shelly_cloud_connected Whether the device is connected to Shelly Cloud
# TYPE shelly_cloud_connected gauge
shelly_cloud_connected{device="485519D74AEF"} 1
# HELP shelly_cloud_enabled Whether the device has Shelly Cloud enabled
# TYPE shelly_cloud_enabled gauge
shelly_cloud_enabled{device="485519D74AEF"} 1
# HELP shelly_filesystem_free_kb Amount of free filesystem space on device in kilobytes
# TYPE shelly_filesystem_free_kb gauge
shelly_filesystem_free_kb{device="485519D74AEF"} 155118
# HELP shelly_filesystem_total_kb Amount of total filesystem space on device in kilobytes
# TYPE shelly_filesystem_total_kb gauge
shelly_filesystem_total_kb{device="485519D74AEF"} 233681
# HELP shelly_memory_free_kb Amount of free memory on device in kilobytes
# TYPE shelly_memory_free_kb gauge
shelly_memory_free_kb{device="485519D74AEF"} 32420
# HELP shelly_memory_total_kb Amount of total memory on device in kilobytes
# TYPE shelly_memory_total_kb gauge
shelly_memory_total_kb{device="485519D74AEF"} 49920
# HELP shelly_mqtt_connected Whether the device is connected to MQTT
# TYPE shelly_mqtt_connected gauge
shelly_mqtt_connected{device="485519D74AEF"} 0
# HELP shelly_relay_on Whether the channel is turned ON or OFF
# TYPE shelly_relay_on gauge
shelly_relay_on{device="485519D74AEF",relay="0"} 1
# HELP shelly_update_available Whether the device has a firmware update available
# TYPE shelly_update_available gauge
shelly_update_available{device="485519D74AEF"} 0
# HELP shelly_uptime_seconds Uptime of the device in seconds
# TYPE shelly_uptime_seconds gauge
shelly_uptime_seconds{device="485519D74AEF"} 6196
root@Ubuntu-Tools:~#

For the 3EM PRO, i get nothing:

root@Ubuntu-Tools:~# curl -s "http://localhost:7978/probe?target=10.10.200.41"
root@Ubuntu-Tools:~# 

From POSTMAN, i get the following returns from the devices:
20231125-Shelly_3EM.txt
20231125-Shelly_3EM_PRO.txt

I have no idea how to adjust this code to make it work, can you help?

FYI, to test it, i used:

root@Ubuntu-Tools:~# docker pull ghcr.io/ianunruh/shelly-exporter:main
main: Pulling from ianunruh/shelly-exporter
5c7808093659: Pull complete
c8e21b145cca: Pull complete
Digest: sha256:70f0a8362043bc4f90ab34a58396d8537ad81d75a3ba2af090a5c3567d70340f
Status: Downloaded newer image for ghcr.io/ianunruh/shelly-exporter:main
ghcr.io/ianunruh/shelly-exporter:main
root@Ubuntu-Tools:~#

Then from portainer, i created a container from the image & exposed ports 7978->9090 and it seems to be working, but the energy data is not captured.

Thanks,
Gabriel

[ianunruh]

Looks like the 3EM uses the Gen1 API, which 3EM Pro uses the Gen2 API.

https://shelly-api-docs.shelly.cloud/gen2/Devices/ShellyPro3EM/

I'll look at what it takes to add support for the new version. Thank you for providing the output from the 3EM Pro.

[gmoscalu]

@ianunruh,

While at it, please note that no power/energy/current/voltage measurement is returned for the 3EM either, just the memory and filesystem is returned...

I can't say why. Maybe you can have a look as well.