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* fix: rewrite relative URLs when syncing to GitHub discussion Relative URLs back to supabse.com won't work in GitHub discussions, so rewrite them back to absolute URLs starting with https://supabase.com * fix: replace all supabase urls with relative urls * chore: add linting for relative urls * chore: bump linter version * Prettier --------- Co-authored-by: Chris Chinchilla <chris.ward@supabase.io>
89 lines
4.1 KiB
Plaintext
89 lines
4.1 KiB
Plaintext
---
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title = "Webhook debugging guide"
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github_url = "https://github.com/orgs/supabase/discussions/21023"
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date_created = "2024-02-05T17:56:07+00:00"
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topics = [ "database" ]
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keywords = [ "webhook", "timeout", "pg_net", "postgres", "trigger" ]
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database_id = "a5524182-9dc4-4470-86fe-45ace109a53a"
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---
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> NOTE: version 0.10.0 of pg*net is out. You should consider updating your database in the[ Infrastructure Settings](/dashboard/project/*/settings/infrastructure) if you are on a prior version. If you do not know your version, you can check the [Extensions Dashboard](/dashboard/project/_/database/extensions).
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**Debugging Steps**
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**1. Test if webhooks are active:**
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Webhooks are run in a Postgres background worker. The first debugging step is to see if the worker is active. Run the following SQL code:
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```sql
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select pid from pg_stat_activity where backend_type ilike '%pg_net%';
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```
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If it does not return an integer, then the worker has failed and needs to be restarted. If you are running PG_NET 0.8 or later, you can restart the background worker by executing the following function:
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```sql
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select net.worker_restart();
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```
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Otherwise, it is necessary to fast reboot your instance in the [Dashboard's Settings](/dashboard/project/_/settings/general).
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**2. Remove any triggers on net tables:**
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Using `pg_net` in triggers on most tables is fine; however, do not add triggers to the `net._http_response` or `net.http_request_queue` tables.
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The `net` tables are special and if triggers on them fail or call a pg_net function (`http_get`, `http_post`, `http_delete`), it can lead to an infinite loop. This warning is irrelevant to most projects, but it's worth specifying just in case.
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**3. Check for timeout errors**
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> **NOTE**: The timeout issue has been patched in pg*net v0.11. It is available in Postgres 15.6.1.135 and above. You can upgrade your version of Postgres in the [Infrastructure Settings.](/dashboard/project/*/settings/infrastructure)
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Go to your [Table Editor](/dashboard/project/_/editor/) and navigate to the net schema. It will contain two tables:
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- `_http_response`
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- `http_request_queue`
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The `_http_response` table saves all the response messages from the past 6 hours. If every column contains NULL values, except for the `id`, `error_msg`, and `created` columns, then you are experiencing [a timeout bug](https://github.com/supabase/pg_net/issues/86).
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By default, webhooks will execute the next 200 available queued requests. If the requests are too intense, it may result in a mass timeout. In the [Webhook Dashboard](/dashboard/project/_/database/hooks), you should increase your webhook's timeout to minimize this issue.
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**4. Inspect endpoints**
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The below code makes a request to the Postman Echo API through PG_NET
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```sql
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select
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net.http_post(
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url := 'https://postman-echo.com/post',
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body := '{"key1": "value", "key2": 5}'::jsonb
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) as request_id;
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```
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Postman will then respond with the same payload. This is just a test to confirm that requests are being properly formatted and going through.
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You can then view the request in the `net._http_response table` in the [Table Editor](/dashboard/project/_/editor) or with the following SQL:
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```sql
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select
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*
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from net._http_response
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where id = <request_id>
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```
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You should also inspect all the failed responses from the past 6 hours to see if their are any insightful messages:
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```sql
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select
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*
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from net._http_response
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where "status_code" >= 400 or "error_msg" is not null
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order by created desc;
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```
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Status codes from a server are described in [Mozilla's web docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status)
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**5. Create logs**
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If none of the above suggestions uncovered the cause of the error, for debugging purposes, it may be useful to write a custom webhook that can create logs in the [Dashboard's Postgres Logs](/dashboard/project/_/logs/postgres-logs). The process is outlined in the [PG_NET](/docs/guides/database/extensions/pg_net#debugging-requests) documentation.
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**Conclusion:**
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If your issue still persists, document it as an issue in the [PG_NET GitHub Repo](https://github.com/supabase/pg_net/issues). You are also welcome to contact Supabase Support from your project's [Dashboard](/dashboard/project/_/) for more guidance.
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