discourse/config/initializers/100-logster.rb

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if Rails.env.production?
Logster.store.ignore = [
# honestly, Rails should not be logging this, its real noisy
/^ActionController::RoutingError \(No route matches/,
/^PG::Error: ERROR:\s+duplicate key/,
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/^ActionController::UnknownFormat/,
/^ActionController::UnknownHttpMethod/,
/^AbstractController::ActionNotFound/,
# ignore any empty JS errors that contain blanks or zeros for line and column fields
#
# Line:
# Column:
#
/(?m).*?Line: (?:\D|0).*?Column: (?:\D|0)/,
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# suppress empty JS errors (covers MSIE 9, etc)
/^(Syntax|Script) error.*Line: (0|1)\b/m,
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# CSRF errors are not providing enough data
# suppress unconditionally for now
/^Can't verify CSRF token authenticity.$/,
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# Yandex bot triggers this JS error a lot
/^Uncaught ReferenceError: I18n is not defined/,
# related to browser plugins somehow, we don't care
/Error calling method on NPObject/,
# 404s can be dealt with elsewhere
/^ActiveRecord::RecordNotFound/,
# bad asset requested, no need to log
/^ActionController::BadRequest/,
# we can't do anything about invalid parameters
/Rack::QueryParser::InvalidParameterError/,
# we handle this cleanly in the message bus middleware
# no point logging to logster
/RateLimiter::LimitExceeded.*/m
]
end
# middleware that logs errors sits before multisite
# we need to establish a connection so redis connection is good
# and db connection is good
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Logster.config.current_context = lambda { |env, &blk|
begin
if Rails.configuration.multisite
request = Rack::Request.new(env)
ActiveRecord::Base.connection_handler.clear_active_connections!
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RailsMultisite::ConnectionManagement.establish_connection(host: request['__ws'] || request.host)
end
blk.call
ensure
ActiveRecord::Base.connection_handler.clear_active_connections!
end
}
# TODO logster should be able to do this automatically
Logster.config.subdirectory = "#{GlobalSetting.relative_url_root}/logs"
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Logster.config.application_version = Discourse.git_version
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store = Logster.store
redis = Logster.store.redis
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store.redis_prefix = Proc.new { redis.namespace }
store.redis_raw_connection = redis.without_namespace
severities = [Logger::WARN, Logger::ERROR, Logger::FATAL, Logger::UNKNOWN]
RailsMultisite::ConnectionManagement.each_connection do
error_rate_per_minute = SiteSetting.alert_admins_if_errors_per_minute rescue 0
if (error_rate_per_minute || 0) > 0
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store.register_rate_limit_per_minute(severities, error_rate_per_minute) do |rate|
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MessageBus.publish("/logs_error_rate_exceeded", rate: rate, duration: 'minute', publish_at: Time.current.to_i)
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end
end
error_rate_per_hour = SiteSetting.alert_admins_if_errors_per_hour rescue 0
if (error_rate_per_hour || 0) > 0
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store.register_rate_limit_per_hour(severities, error_rate_per_hour) do |rate|
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MessageBus.publish("/logs_error_rate_exceeded", rate: rate, duration: 'hour', publish_at: Time.current.to_i)
end
end
end
if Rails.configuration.multisite
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chained = Rails.logger.instance_variable_get(:@chained)
chained && chained.first.formatter = RailsMultisite::Formatter.new
end