ERROR Can not unmarshal JSON for preferences

[peterpiglet]

Hi, I was using the exporter without problems using qbit 4.5.2 and 4.6.2. However, I just downgraded a client to 4.3.9 and the exporter does not work with this client.

With qbit 4.3.9 I just see the following error in the logs:

Is there anything I can do to make it work with 4.3.9?

[martabal]

Hello !
qbit 4.3.9 is pretty old, there is a very good chance that the api is incompatible. I can try to support it, can you share the API response for : http://your-url:port/api/v2/app/preferences ?

[peterpiglet]

Hey, that would be great. Thanks for looking into it.

Here is the API response:

{"add_trackers":"","add_trackers_enabled":false,"alt_dl_limit":10240,"alt_up_limit":10240,"alternative_webui_enabled":false,"alternative_webui_path":"","announce_ip":"","announce_to_all_tiers":true,"announce_to_all_trackers":false,"anonymous_mode":false,"async_io_threads":10,"auto_delete_mode":0,"auto_tmm_enabled":true,"autorun_enabled":true,"autorun_program":"","banned_IPs":"","bittorrent_protocol":1,"block_peers_on_privileged_ports":false,"bypass_auth_subnet_whitelist":"###.###.###.#/##","bypass_auth_subnet_whitelist_enabled":true,"bypass_local_auth":false,"category_changed_tmm_enabled":true,"checking_memory_use":32,"current_interface_address":"","current_network_interface":"tun0","dht":false,"disk_cache":-1,"disk_cache_ttl":60,"dl_limit":0,"dont_count_slow_torrents":false,"dyndns_domain":"changeme.dyndns.org","dyndns_enabled":false,"dyndns_password":"","dyndns_service":0,"dyndns_username":"","embedded_tracker_port":####,"enable_coalesce_read_write":false,"enable_embedded_tracker":false,"enable_multi_connections_from_same_ip":false,"enable_os_cache":true,"enable_piece_extent_affinity":false,"enable_upload_suggestions":false,"encryption":0,"export_dir":"","export_dir_fin":"","file_pool_size":5000,"hashing_threads":2,"idn_support_enabled":false,"incomplete_files_ext":false,"ip_filter_enabled":false,"ip_filter_path":"","ip_filter_trackers":false,"limit_lan_peers":false,"limit_tcp_overhead":false,"limit_utp_rate":false,"listen_port":#####,"locale":"en","lsd":false,"mail_notification_auth_enabled":true,"mail_notification_email":"","mail_notification_enabled":false,"mail_notification_password":"","mail_notification_sender":"","mail_notification_smtp":"smtp.changeme.com","mail_notification_ssl_enabled":false,"mail_notification_username":"","max_active_downloads":3,"max_active_torrents":5,"max_active_uploads":3,"max_concurrent_http_announces":50,"max_connec":500,"max_connec_per_torrent":100,"max_ratio":-1,"max_ratio_act":0,"max_ratio_enabled":false,"max_seeding_time":-1,"max_seeding_time_enabled":false,"max_uploads":20,"max_uploads_per_torrent":4,"outgoing_ports_max":0,"outgoing_ports_min":0,"peer_tos":32,"peer_turnover":4,"peer_turnover_cutoff":90,"peer_turnover_interval":300,"pex":false,"preallocate_all":false,"proxy_auth_enabled":false,"proxy_ip":"0.0.0.0","proxy_password":"","proxy_peer_connections":false,"proxy_port":8080,"proxy_torrents_only":false,"proxy_type":0,"proxy_username":"","queueing_enabled":false,"random_port":false,"recheck_completed_torrents":false,"resolve_peer_countries":true,"rss_auto_downloading_enabled":false,"rss_download_repack_proper_episodes":false,"rss_max_articles_per_feed":50,"rss_processing_enabled":false,"rss_refresh_interval":30,"rss_smart_episode_filters":"s(\\d )e(\\d )\n(\\d )x(\\d )\n(\\d{4}[.\\-]\\d{1,2}[.\\-]\\d{1,2})\n(\\d{1,2}[.\\-]\\d{1,2}[.\\-]\\d{4})","save_path":"/downloads/","save_path_changed_tmm_enabled":true,"save_resume_data_interval":60,"scan_dirs":{},"schedule_from_hour":8,"schedule_from_min":0,"schedule_to_hour":20,"schedule_to_min":0,"scheduler_days":0,"scheduler_enabled":false,"send_buffer_low_watermark":10,"send_buffer_watermark":500,"send_buffer_watermark_factor":50,"slow_torrent_dl_rate_threshold":2,"slow_torrent_inactive_timer":60,"slow_torrent_ul_rate_threshold":2,"socket_backlog_size":30,"ssrf_mitigation":true,"start_paused_enabled":false,"stop_tracker_timeout":5,"temp_path":"/downloads/incomplete/","temp_path_enabled":false,"torrent_changed_tmm_enabled":true,"torrent_content_layout":"Original","up_limit":0,"upload_choking_algorithm":1,"upload_slots_behavior":0,"upnp":false,"upnp_lease_duration":0,"use_https":false,"utp_tcp_mixed_mode":0,"validate_https_tracker_certificate":true,"web_ui_address":"*","web_ui_ban_duration":3600,"web_ui_clickjacking_protection_enabled":false,"web_ui_csrf_protection_enabled":false,"web_ui_custom_http_headers":"","web_ui_domain_list":"*","web_ui_host_header_validation_enabled":false,"web_ui_https_cert_path":"","web_ui_https_key_path":"","web_ui_max_auth_fail_count":5,"web_ui_port":#####,"web_ui_secure_cookie_enabled":true,"web_ui_session_timeout":3600,"web_ui_upnp":false,"web_ui_use_custom_http_headers_enabled":false,"web_ui_username":"###"}

[martabal]

Mmmh, that API endpoint is not the issue, the log message was wrong, I fixed it with #35. Can you re-try with docker tag pr-35 please ?

[peterpiglet]

just pulled pr-35. I see the same ERROR in the logs. In prometheus I see Get "http://192.168.178.26:8090/metrics": context deadline exceeded as error messages for the target. Can I provide some other e.g. logs?

[martabal]

Mmmh, I thought the error message was going to change

[martabal]

What's the API response for http://your-url/api/v2/app/webapiVersion ?

[peterpiglet]

Hey, the response is 2.8.2.

Which according to the qbit website is the current webAPI for all versions above 4.1.

[martabal]

Ok great, so that's not the problem. Did you edit the first API response you posted (the API response for http://your-url:port/api/v2/app/preferences) ?

[peterpiglet]

Yes, I edited some entries to anonymize it e.g. ports, username. I exchange the charaters with # (e.g. "web_ui_username":"###"). I did not change the structure or remove entries. Sorry, should have told you that.

[martabal]

Yes, that's what I thought, but #is not a valid character in JSON so this is is why I ask.
I added more logs, can you re-try ? (don't forget to re-pull the image and add / set LOG_LEVEL to DEBUG)

[peterpiglet]

OK, I have:

1. stopped and removed the container
2. deleted the image
3. added LOG_LEVEL=DEBUG to my compose under environment variables
4. repulled the image pr-35 and recreated the container

The outcome is somewhat the same with an extra DEBUG line in the logs:

[martabal]

Sorry, small issue with the CD, it should be fixed now, you can re-pull the image

[peterpiglet]

Sure, no problem. Now the logs became more verbose:

[13/03/2024 11:11:39] DEBUG New request
[13/03/2024 11:11:40] ERROR Can not unmarshal JSON for tracker
[13/03/2024 11:11:40] DEBUG json: cannot unmarshal string into Go struct field .tier of type int

[martabal]

Oh interesting, what's the API response for http://your-url/api/v2/torrents/trackers?hash=<torrent-hash>

[peterpiglet]

OK, so if understood correctly I change <torrent-hash> to the hash of one random torrent in my client to got the API response (I anonymized the url entry with ###):

[{"msg":"This torrent is private","num_downloaded":0,"num_leeches":0,"num_peers":0,"num_seeds":0,"status":0,"tier":"","url":"** [DHT] "},{"msg":"This torrent is private","num_downloaded":0,"num_leeches":0,"num_peers":0,"num_seeds":0,"status":0,"tier":"","url":" [PeX] "},{"msg":"This torrent is private","num_downloaded":0,"num_leeches":0,"num_peers":0,"num_seeds":0,"status":0,"tier":"","url":" [LSD] **"},{"msg":"","num_downloaded":-1,"num_leeches":-1,"num_peers":14,"num_seeds":-1,"status":2,"tier":0,"url":"###"}]

I also stumbled upon this entry in the API changelog LINK. I don't know if its of interest, just stated change string to integer, which reminded me of the DEBUG error with something about int. I am a noob, so ignore my comments if they do not help :D

Change status field from translated string to an integer for /torrents/trackers (#9375)

[martabal]

I added more logs, you can re-pull the image

[peterpiglet]

Yes, here is the new log (I anonymized the url entry with ###):

[13/03/2024 11:59:39] DEBUG New request
[13/03/2024 11:59:40] ERROR Can not unmarshal JSON for tracker
[13/03/2024 11:59:40] DEBUG [{"msg":"This torrent is private","num_downloaded":0,"num_leeches":0,"num_peers":0,"num_seeds":0,"status":0,"tier":"","url":"** [DHT] "},{"msg":"This torrent is private","num_downloaded":0,"num_leeches":0,"num_peers":0,"num_seeds":0,"status":0,"tier":"","url":" [PeX] "},{"msg":"This torrent is private","num_downloaded":0,"num_leeches":0,"num_peers":0,"num_seeds":0,"status":0,"tier":"","url":" [LSD] **"},{"msg":"","num_downloaded":190,"num_leeches":0,"num_peers":14,"num_seeds":14,"status":2,"tier":0,"url":"###"}]
[13/03/2024 11:59:40] DEBUG json: cannot unmarshal string into Go struct field .tier of type int

[martabal]

Ok, I see what's the issue, I'll correct it this evening. Thank you for your reactivity !

[peterpiglet]

@martabal thank you for the support!

[martabal]

To explain what's going on : The qBittorrent API had an issue where it sent an empty string instead of an integer which causes this error (qbittorrent/qBittorrent#15545 and qbittorrent/qBittorrent#13302).

I fixed it, it should work again, @peterpiglet can you confirm it 😄 ? (you have to pull again pr-35 image)

[peterpiglet]

Awesome! I can confirm, it is working again. And consequently my Grafana dashboard is working too. satisfaction 😄

Thank you very much for the support!

[martabal]

Nice !

I released v1.2.0 with the fix, so you can revert to the latest tag.
Thank you again for your responsiveness, you helped a lot to understand what was wrong !