discourse/app/services/web_hook_emitter.rb

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# frozen_string_literal: true
class WebHookEmitter
REQUEST_TIMEOUT = 20
def initialize(webhook, webhook_event)
@webhook = webhook
@webhook_event = webhook_event
end
def emit!(headers:, body:)
uri = URI(@webhook.payload_url.strip)
connection_opts = {
request: {
write_timeout: REQUEST_TIMEOUT,
read_timeout: REQUEST_TIMEOUT,
open_timeout: REQUEST_TIMEOUT,
},
}
connection_opts[:ssl] = { verify: false } if !@webhook.verify_certificate
conn = Faraday.new(nil, connection_opts) { |f| f.adapter FinalDestination::FaradayAdapter }
start = Process.clock_gettime(Process::CLOCK_MONOTONIC, :millisecond)
error = nil
response = nil
begin
response = conn.post(uri.to_s, body, headers)
rescue => e
error = e
end
duration = Process.clock_gettime(Process::CLOCK_MONOTONIC, :millisecond) - start
event_update_args = { headers: MultiJson.dump(headers), duration: duration }
if response
event_update_args[:response_headers] = MultiJson.dump(response.headers)
event_update_args[:response_body] = response.body
event_update_args[:status] = response.status
else
event_update_args[:status] = -1
if error.is_a?(Faraday::Error) &&
error.wrapped_exception.is_a?(FinalDestination::SSRFDetector::DisallowedIpError)
error = I18n.t("webhooks.payload_url.blocked_or_internal")
end
event_update_args[:response_headers] = MultiJson.dump(error: error)
end
@webhook_event.update!(**event_update_args)
response
end
end