Marten Raven Middleware provides a Raven.cr integration that allows you to get automatic error reporting for the Marten web framework by using a dedicated middleware.

Simply add the following entry to your project's shard.yml:

dependencies:
  marten_raven_middleware:
    github: ellmetha/marten-raven-middleware

And run shards install afterward.

First, add the following requirement to your project's src/project.cr file:

require "marten_raven_middleware"

You should then ensure that Raven.cr is properly configured. In a Marten project, you'll likely create a config/initializers/raven.cr initializer where you require and configure the Raven client for your project. For example:

# config/initializers/raven.cr

require "raven"

Raven.configure do |config|
  config.dsn = "your_dsn"
end

To get automatic error reporting for your project, you then need to add the Raven::Marten::Middleware middleware class to the middleware Marten setting. Ideally, this middleware should be placed near the beginning of the middleware array to ensure that it can catch any errors raised by the following middlewares in the stack. For example:

# config/settings/base.cr

Marten.configure do |config|
  config.middleware = [
    Raven::Marten::Middleware,
    # Other middlewares...
    Marten::Middleware::GZip,
    Marten::Middleware::XFrameOptions,
    Marten::Middleware::StrictTransportSecurity,
  ]
end

That's it! From now on every exception that is raised by your handlers and middlewares will be reported to Sentry automatically.

Morgan Aubert (@ellmetha) and contributors.

MIT. See LICENSE for more details.