Suppress backtrace when delivering toots (#12798)

This is to suppress irrelevant backtrace from errors raised when
delivering toots to remote servers. The errors are usually out of
control by the local server and backtraces don't provide much
information.

This is similar to https://github.com/tootsuite/mastodon/pull/5174
and shortens backtraces like below:

```
WARN: Mastodon::UnexpectedResponseError: https://example.com/inbox returned code 523
WARN: app/workers/activitypub/delivery_worker.rb:48:in `block (3 levels) in perform_request'
app/lib/request.rb:75:in `perform'
app/workers/activitypub/delivery_worker.rb:47:in `block (2 levels) in perform_request'
app/lib/request_pool.rb:53:in `use'
app/lib/request_pool.rb:108:in `block (2 levels) in with'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/notifications.rb:170:in `instrument'
app/lib/request_pool.rb:107:in `block in with'
app/lib/connection_pool/shared_connection_pool.rb:21:in `block (2 levels) in with'
app/lib/connection_pool/shared_connection_pool.rb:20:in `handle_interrupt'
app/lib/connection_pool/shared_connection_pool.rb:20:in `block in with'
app/lib/connection_pool/shared_connection_pool.rb:16:in `handle_interrupt'
app/lib/connection_pool/shared_connection_pool.rb:16:in `with'
app/lib/request_pool.rb:106:in `with'
app/workers/activitypub/delivery_worker.rb:46:in `block in perform_request'
vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:51:in `run_code'
vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:42:in `run_yellow'
vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:24:in `run'
app/workers/activitypub/delivery_worker.rb:57:in `perform_request'
app/workers/activitypub/delivery_worker.rb:25:in `perform'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:192:in `execute_job'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:165:in `block (2 levels) in process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:128:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/collectors/sidekiq.rb:31:in `block in call'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/statsd/publisher.rb:27:in `statsd_time'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/collectors/sidekiq.rb:30:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
app/lib/sidekiq_error_handler.rb:5:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/scout_apm-2.3.0.pre3/lib/scout_apm/background_job_integrations/sidekiq.rb:69:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-unique-jobs-6.0.18/lib/sidekiq_unique_jobs/server/middleware.rb:29:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:133:in `invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:164:in `block in process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:137:in `block (6 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_retry.rb:109:in `local'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:136:in `block (5 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/rails.rb:43:in `block in call'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/execution_wrapper.rb:87:in `wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/reloader.rb:73:in `block in wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/execution_wrapper.rb:87:in `wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/reloader.rb:72:in `wrap'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/rails.rb:42:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:132:in `block (4 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:250:in `stats'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:127:in `block (3 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_logger.rb:8:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:126:in `block (2 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_retry.rb:74:in `global'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:125:in `block in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/logging.rb:48:in `with_context'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/logging.rb:42:in `with_job_hash_context'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:124:in `dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:163:in `process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:83:in `process_one'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:71:in `run'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/util.rb:16:in `watchdog'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/util.rb:25:in `block in safe_thread'
```

```
WARN: Stoplight::Error::RedLight: https://example.com/inbox
WARN: vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:46:in `run_red'
vendor/bundle/ruby/2.7.0/gems/stoplight-2.2.0/lib/stoplight/light/runnable.rb:25:in `run'
app/workers/activitypub/delivery_worker.rb:57:in `perform_request'
app/workers/activitypub/delivery_worker.rb:25:in `perform'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:192:in `execute_job'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:165:in `block (2 levels) in process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:128:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/collectors/sidekiq.rb:31:in `block in call'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/statsd/publisher.rb:27:in `statsd_time'
vendor/bundle/ruby/2.7.0/gems/nsa-0.2.7/lib/nsa/collectors/sidekiq.rb:30:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
app/lib/sidekiq_error_handler.rb:5:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/scout_apm-2.3.0.pre3/lib/scout_apm/background_job_integrations/sidekiq.rb:69:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-unique-jobs-6.0.18/lib/sidekiq_unique_jobs/server/middleware.rb:29:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:130:in `block in invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/middleware/chain.rb:133:in `invoke'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:164:in `block in process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:137:in `block (6 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_retry.rb:109:in `local'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:136:in `block (5 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/rails.rb:43:in `block in call'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/execution_wrapper.rb:87:in `wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/reloader.rb:73:in `block in wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/execution_wrapper.rb:87:in `wrap'
vendor/bundle/ruby/2.7.0/gems/activesupport-5.2.4.1/lib/active_support/reloader.rb:72:in `wrap'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/rails.rb:42:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:132:in `block (4 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:250:in `stats'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:127:in `block (3 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_logger.rb:8:in `call'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:126:in `block (2 levels) in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/job_retry.rb:74:in `global'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:125:in `block in dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/logging.rb:48:in `with_context'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/logging.rb:42:in `with_job_hash_context'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:124:in `dispatch'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:163:in `process'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:83:in `process_one'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/processor.rb:71:in `run'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/util.rb:16:in `watchdog'
vendor/bundle/ruby/2.7.0/gems/sidekiq-5.2.7/lib/sidekiq/util.rb:25:in `block in safe_thread'
```

app/lib/request.rb

@@ -59,7 +59,7 @@ class Request
     begin
       response = http_client.public_send(@verb, @url.to_s, @options.merge(headers: headers))
     rescue => e
-      raise e.class, "#{e.message} on #{@url}", e.backtrace
+      raise e.class, "#{e.message} on #{@url}", e.backtrace[0]
     end
 
     begin
@@ -73,6 +73,8 @@ class Request
       response.body_with_limit if http_client.persistent?
 
       yield response if block_given?
+    rescue => e
+      raise e.class, e.message, e.backtrace[0]
     ensure
       http_client.close unless http_client.persistent?
     end

app/workers/activitypub/delivery_worker.rb

@@ -50,9 +50,13 @@ class ActivityPub::DeliveryWorker
       end
     end
 
-    light.with_threshold(STOPLIGHT_FAILURE_THRESHOLD)
-         .with_cool_off_time(STOPLIGHT_COOLDOWN)
-         .run
+    begin
+      light.with_threshold(STOPLIGHT_FAILURE_THRESHOLD)
+           .with_cool_off_time(STOPLIGHT_COOLDOWN)
+           .run
+    rescue Stoplight::Error::RedLight => e
+      raise e.class, e.message, e.backtrace.first(3)
+    end
   end
 
   def failure_tracker