Symfony2 Monolog Settings for email and file logging - symfony

Question

I want to setup Symfony2 to send me an email for critical errors, but just log error level errors. Will the following settings do that?
monolog:
handlers:
main:
type: fingers_crossed
action_level: error
handler: grouped
grouped:
type: group
members: [filelog, mail]
# log all errors to file
filelog:
type: fingers_crossed
action_level: error
handler: nested_stream
nested_stream:
type: stream
path: "%kernel.logs_dir%/%kernel.environment%.log"
level: debug
# send me an email when we have a critical error
mail:
type: fingers_crossed
action_level: critical
handler: buffered
buffered:
type: buffer
handler: swift
swift:
type: swift_mailer
from_email: %mailer_sender%
to_email: %error_email%
subject: "[FeedStream Error]"
level: debug
I saw: http://symfony.com/doc/current/cookbook/logging/monolog_email.html But it doesn't handle error at all, which is a case where I still want logs (but no email). I was pretty sure my config would work, but I don't know enough about the monolog settings. Please let me know if this is correct or if there is a better way.

Answer 1

The following is my production monolog config. This is confirmed working sending critical errors, whilst logging 'error' level and above to file. I've also split out the different channels to separate files. The other channels seem to produce errors far less than 'request', so it makes sense to split them out in production for me. Realise that's not your question, but hope it helps someone else; this can pared back to fit most requirements.
monolog:
handlers:
main:
level: error
type: stream
path: "%kernel.logs_dir%/%kernel.environment%_remaining.log"
channels: ["!doctrine", "!request", "!security"]
request:
type: fingers_crossed
handler: requests
excluded_404s:
- ^/phpmyadmin
requests:
type: group
members: [request_critical, request_error]
request_critical:
level: critical
type: stream
path: "%kernel.logs_dir%/%kernel.environment%_request_critical.log"
channels: [request]
request_error:
level: error
type: stream
path: "%kernel.logs_dir%/%kernel.environment%_request.log"
channels: [request]
doctrine:
level: error
type: stream
path: "%kernel.logs_dir%/%kernel.environment%_doctrine.log"
channels: [doctrine]
security:
level: error
type: stream
path: "%kernel.logs_dir%/%kernel.environment%_security.log"
channels: [security]
mail:
type: fingers_crossed
action_level: critical
handler: buffered
buffered:
type: buffer
handler: swift
swift:
type: swift_mailer
from_email: aj.cerqueti#example.com
to_email: aj.cerqueti#example.com
subject: A critical error occurred