Curl error when leaving webhookurl empty

[Jalliuz]

We have a Monolog/Slack "webhook" implementation in our project. It works fine except when you don't have a webhook url

In my local environment I don't immediately have a Slack webhookurl. These are managed by Slack admins of our company so I can't just create one myself.

But the project requires one in the monolog config.

monolog:
    channels:
        - slack_error
    handlers:
        slack_error:
            type: slackwebhook
            webhook_url: '%env(SLACK_ERROR_WEBHOOK_URL)%'
            channel: '%env(SLACK_ERROR_CHANNEL)%'
            bot_name: '%env(SLACK_BOT_NAME)%'
            icon_emoji: '%env(SLACK_EMOJI)%'
            level: '%env(SLACK_ERROR_LEVEL)%'
            include_extra: true

If I leave it empty, my whole project crashes with a curl error in Handler/SlackWebhookHandler.php line 110

Is there an option to disable it?

What I currently did is setting the level
level: emergency
This is the highest level and I guess it currently never gets thrown.

Solution:
A solution for this bundle can be that if the webhookurl is left empty, no curl will get called

Another solution is adding an option
enabled: false

So te developer can decide if its enabled in his environment or not

[davidheunis]

To address your issue, you're correct that the root cause of the crash stems from the fact that the webhook_url is required by the SlackWebhookHandler in Monolog. If it's left empty or not properly configured in your environment, the handler attempts to send a request, leading to a curl error. There are a few potential solutions to make this more flexible and avoid crashes in environments where a valid Slack webhook URL is not available.

Posible Solution:
Use Environment Variable Default Value. If the environment variable is not set or left empty, you could set a default value to prevent Monolog from trying to send data. You could modify the webhook_url in the Monolog configuration file to check if the environment variable exists and fallback to a default empty value or null.

monolog:
    channels:
        - slack_error
    handlers:
        slack_error:
            type: slackwebhook
            webhook_url: '%env(SLACK_ERROR_WEBHOOK_URL)%' # Ensure this is set or falls back to a blank URL.
            channel: '%env(SLACK_ERROR_CHANNEL)%'
            bot_name: '%env(SLACK_BOT_NAME)%'
            icon_emoji: '%env(SLACK_EMOJI)%'
            level: '%env(SLACK_ERROR_LEVEL)%'
            include_extra: true