2016-06-16 01:49:57 +08:00
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require 'excon'
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module Jobs
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class EmitWebHookEvent < Jobs::Base
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2018-05-21 16:23:09 +08:00
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PING_EVENT = 'ping'.freeze
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2018-05-30 19:27:40 +08:00
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MAX_RETRY_COUNT = 4.freeze
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RETRY_BACKOFF = 5
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2018-05-21 16:23:09 +08:00
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2016-06-16 01:49:57 +08:00
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def execute(args)
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2018-05-21 16:23:09 +08:00
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%i{
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web_hook_id
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event_type
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}.each do |key|
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2016-12-23 00:08:35 +08:00
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raise Discourse::InvalidParameters.new(key) unless args[key].present?
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2016-11-08 11:43:54 +08:00
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end
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2018-05-30 19:27:40 +08:00
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@orig_args = args.dup
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2016-12-23 00:08:35 +08:00
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web_hook = WebHook.find_by(id: args[:web_hook_id])
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2017-10-02 12:50:22 +08:00
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raise Discourse::InvalidParameters.new(:web_hook_id) if web_hook.blank?
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2016-11-08 11:43:54 +08:00
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2016-12-23 00:08:35 +08:00
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unless ping_event?(args[:event_type])
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2016-11-08 11:43:54 +08:00
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return unless web_hook.active?
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2016-12-23 00:08:35 +08:00
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2016-11-08 11:43:54 +08:00
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return if web_hook.group_ids.present? && (args[:group_id].present? ||
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!web_hook.group_ids.include?(args[:group_id]))
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2016-12-23 00:08:35 +08:00
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2016-11-08 11:43:54 +08:00
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return if web_hook.category_ids.present? && (!args[:category_id].present? ||
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!web_hook.category_ids.include?(args[:category_id]))
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2016-12-23 00:08:35 +08:00
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2018-05-24 15:16:52 +08:00
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raise Discourse::InvalidParameters.new(:payload) unless args[:payload].present?
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2018-05-21 16:23:09 +08:00
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args[:payload] = JSON.parse(args[:payload])
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2016-11-08 11:43:54 +08:00
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end
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web_hook_request(args, web_hook)
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2016-06-16 01:49:57 +08:00
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end
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private
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2016-12-23 00:08:35 +08:00
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def guardian
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Guardian.new(Discourse.system_user)
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end
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def ping_event?(event_type)
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2018-05-21 16:23:09 +08:00
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PING_EVENT == event_type.to_s
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2016-12-23 00:08:35 +08:00
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end
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def build_web_hook_body(args, web_hook)
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body = {}
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event_type = args[:event_type].to_s
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if ping_event?(event_type)
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body[:ping] = 'OK'
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else
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body[event_type] = args[:payload]
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end
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2016-11-08 11:43:54 +08:00
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2016-12-23 00:08:35 +08:00
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new_body = Plugin::Filter.apply(:after_build_web_hook_body, self, body)
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MultiJson.dump(new_body)
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end
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def web_hook_request(args, web_hook)
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uri = URI(web_hook.payload_url.strip)
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2016-12-23 00:08:35 +08:00
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conn = Excon.new(
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uri.to_s,
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ssl_verify_peer: web_hook.verify_certificate,
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retry_limit: 0
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)
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2016-06-16 01:49:57 +08:00
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2016-11-08 11:43:54 +08:00
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body = build_web_hook_body(args, web_hook)
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web_hook_event = WebHookEvent.create!(web_hook_id: web_hook.id)
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2018-07-27 08:19:11 +08:00
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response = nil
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2016-06-16 01:49:57 +08:00
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begin
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2017-07-28 09:20:09 +08:00
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content_type =
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case web_hook.content_type
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when WebHook.content_types['application/x-www-form-urlencoded']
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'application/x-www-form-urlencoded'
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else
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'application/json'
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end
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2016-12-23 00:08:35 +08:00
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2016-06-16 01:49:57 +08:00
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headers = {
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'Accept' => '*/*',
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'Connection' => 'close',
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2016-09-21 10:31:20 +08:00
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'Content-Length' => body.bytesize,
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2016-06-16 01:49:57 +08:00
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'Content-Type' => content_type,
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'Host' => uri.host,
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2018-05-21 16:23:09 +08:00
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'User-Agent' => "Discourse/#{Discourse::VERSION::STRING}",
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2016-11-04 22:18:18 +08:00
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'X-Discourse-Instance' => Discourse.base_url,
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2016-06-16 01:49:57 +08:00
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'X-Discourse-Event-Id' => web_hook_event.id,
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2016-11-08 11:43:54 +08:00
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'X-Discourse-Event-Type' => args[:event_type]
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2016-06-16 01:49:57 +08:00
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}
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2016-12-23 00:08:35 +08:00
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2016-11-08 11:43:54 +08:00
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headers['X-Discourse-Event'] = args[:event_name].to_s if args[:event_name].present?
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2016-06-16 01:49:57 +08:00
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2016-11-08 11:43:54 +08:00
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if web_hook.secret.present?
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2018-05-21 16:23:09 +08:00
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headers['X-Discourse-Event-Signature'] = "sha256=#{OpenSSL::HMAC.hexdigest("sha256", web_hook.secret, body)}"
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2016-06-16 01:49:57 +08:00
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end
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now = Time.zone.now
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response = conn.post(headers: headers, body: body)
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2016-12-23 00:08:35 +08:00
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web_hook_event.update!(
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headers: MultiJson.dump(headers),
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payload: body,
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status: response.status,
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response_headers: MultiJson.dump(response.headers),
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response_body: response.body,
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duration: ((Time.zone.now - now) * 1000).to_i
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)
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MessageBus.publish("/web_hook_events/#{web_hook.id}", {
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web_hook_event_id: web_hook_event.id,
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event_type: args[:event_type]
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}, user_ids: User.human_users.staff.pluck(:id))
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2016-06-16 01:49:57 +08:00
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rescue
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web_hook_event.destroy!
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end
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2018-05-30 19:27:40 +08:00
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2018-07-27 08:19:11 +08:00
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retry_web_hook if response&.status != 200
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2018-05-30 19:27:40 +08:00
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end
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def retry_web_hook
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if SiteSetting.retry_web_hook_events?
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@orig_args[:retry_count] = (@orig_args[:retry_count] || 0) + 1
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return if @orig_args[:retry_count] > MAX_RETRY_COUNT
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delay = RETRY_BACKOFF**(@orig_args[:retry_count] - 1)
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Jobs.enqueue_in(delay.minutes, :emit_web_hook_event, @orig_args)
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end
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2016-06-16 01:49:57 +08:00
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end
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end
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end
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