Introduce Redis helpers. Rename BuildTraceChunkFlushToDbWorker to Ci::BuildTraceChunkFlushWorker.

app/models/ci/build_trace_chunk.rb

@@ -99,7 +99,7 @@ module Ci
     def schedule_to_db
       return if db?
 
-      BuildTraceChunkFlushToDbWorker.perform_async(id)
+      Ci::BuildTraceChunkFlushWorker.perform_async(id)
     end
 
     def fullfilled?

app/workers/all_queues.yml

@@ -66,7 +66,7 @@
 - pipeline_processing:pipeline_update
 - pipeline_processing:stage_update
 - pipeline_processing:update_head_pipeline_for_merge_request
-- pipeline_processing:build_trace_chunk_flush_to_db
+- pipeline_processing:ci_build_trace_chunk_flush
 
 - repository_check:repository_check_clear
 - repository_check:repository_check_single_repository

app/workers/build_trace_chunk_flush_to_db_worker.rb → app/workers/ci/build_trace_chunk_flush_worker.rb

-class BuildTraceChunkFlushToDbWorker
-  include ApplicationWorker
-  include PipelineQueue
+module Ci
+  class BuildTraceChunkFlushWorker
+    include ApplicationWorker
 
-  queue_namespace :pipeline_processing
+    queue_namespace :pipeline_processing
 
-  def perform(build_trace_chunk_id)
-    Ci::BuildTraceChunk.find_by(id: build_trace_chunk_id).try do |build_trace_chunk|
-      build_trace_chunk.use_database!
+    def perform(build_trace_chunk_id)
+      ::Ci::BuildTraceChunk.find_by(id: build_trace_chunk_id).try do |build_trace_chunk|
+        build_trace_chunk.use_database!
+      end
     end
   end
 end

spec/models/ci/build_trace_chunk_spec.rb

@@ -75,7 +75,7 @@ describe Ci::BuildTraceChunk, :clean_gitlab_redis_shared_state do
         let(:value) { 'a' * described_class::CHUNK_SIZE }
 
         it 'schedules stashing data' do
-          expect(BuildTraceChunkFlushToDbWorker).to receive(:perform_async).once
+          expect(Ci::BuildTraceChunkFlushWorker).to receive(:perform_async).once
 
           subject
         end
@@ -112,7 +112,7 @@ describe Ci::BuildTraceChunk, :clean_gitlab_redis_shared_state do
 
       context 'when fullfilled chunk size' do
         it 'does not schedule stashing data' do
-          expect(BuildTraceChunkFlushToDbWorker).not_to receive(:perform_async)
+          expect(Ci::BuildTraceChunkFlushWorker).not_to receive(:perform_async)
 
           subject
         end

spec/requests/api/runner_spec.rb

@@ -2,7 +2,7 @@ require 'spec_helper'
 
 describe API::Runner, :clean_gitlab_redis_shared_state do
   include StubGitlabCalls
-  include ChunkedIOHelpers
+  include RedisHelpers
 
   let(:registration_token) { 'abcdefg123456' }
 
@@ -873,8 +873,8 @@ describe API::Runner, :clean_gitlab_redis_shared_state do
             patch_the_trace
             expect(job.reload.trace.raw).to eq 'BUILD TRACE appended appended'
 
-            # GitLab-Rails enxounters an outage on Redis
-            redis_shared_state_outage!
+            # GitLab-Rails encounters an outage on Redis
+            redis_shared_state_cleanup!
             expect(job.reload.trace.raw).to eq ''
 
             # GitLab-Runner patchs

spec/spec_helper.rb

@@ -86,6 +86,7 @@ RSpec.configure do |config|
   config.include WaitForRequests, :js
   config.include LiveDebugger, :js
   config.include MigrationsHelpers, :migration
+  config.include RedisHelpers
 
   if ENV['CI']
     # This includes the first try, i.e. tests will be run 4 times before failing.
@@ -146,21 +147,27 @@ RSpec.configure do |config|
   end
 
   config.around(:each, :clean_gitlab_redis_cache) do |example|
-    Gitlab::Redis::Cache.with(&:flushall)
+    redis_cache_cleanup!
 
     example.run
 
-    Gitlab::Redis::Cache.with(&:flushall)
+    redis_cache_cleanup!
   end
 
   config.around(:each, :clean_gitlab_redis_shared_state) do |example|
-    Gitlab::Redis::SharedState.with(&:flushall)
-    Sidekiq.redis(&:flushall)
+    redis_shared_state_cleanup!
 
     example.run
 
-    Gitlab::Redis::SharedState.with(&:flushall)
-    Sidekiq.redis(&:flushall)
+    redis_shared_state_cleanup!
+  end
+
+  config.around(:each, :clean_gitlab_redis_queues) do |example|
+    redis_queues_cleanup!
+
+    example.run
+
+    redis_queues_cleanup!
   end
 
   # The :each scope runs "inside" the example, so this hook ensures the DB is in the

spec/support/chunked_io/chunked_io_helpers.rb

@@ -8,9 +8,4 @@ module ChunkedIOHelpers
     stub_const('Ci::BuildTraceChunk::CHUNK_SIZE', size)
     stub_const('Gitlab::Ci::Trace::ChunkedIO::CHUNK_SIZE', size)
   end
-
-  def redis_shared_state_outage!
-    Gitlab::Redis::SharedState.with(&:flushall)
-    Sidekiq.redis(&:flushall)
-  end
 end

spec/support/redis/redis_helpers.rb

+module RedisHelpers
+  # config/README.md
+
+  # Usage: performance enhancement
+  def redis_cache_cleanup!
+    Gitlab::Redis::Cache.with(&:flushall)
+  end
+
+  # Usage: SideKiq, Mailroom, CI Runner, Workhorse, push services
+  def redis_queues_cleanup!
+    Gitlab::Redis::Queues.with(&:flushall)
+  end
+
+  # Usage: session state, rate limiting
+  def redis_shared_state_cleanup!
+    Gitlab::Redis::SharedState.with(&:flushall)
+  end
+end