Adds pipeline sha to etag store

* Adds the path to commit mutation

app/graphql/mutations/commits/create.rb

@@ -4,6 +4,7 @@ module Mutations
   module Commits
     class Create < BaseMutation
       include FindsProject
+      include GitlabRoutingHelper
 
       graphql_name 'CommitCreate'
 
@@ -29,6 +30,11 @@ module Mutations
                required: true,
                description: 'Array of action hashes to commit as a batch.'
 
+      field :commit_pipeline_path,
+               GraphQL::STRING_TYPE,
+               null: true,
+               description: "ETag path for the commit's pipeline."
+
       field :commit,
             Types::CommitType,
             null: true,
@@ -50,6 +56,7 @@ module Mutations
 
         {
           commit: (project.repository.commit(result[:result]) if result[:status] == :success),
+          commit_pipeline_path: graphql_etag_pipeline_sha_path(result[:result]),
           errors: Array.wrap(result[:message])
         }
       end

app/helpers/gitlab_routing_helper.rb

@@ -364,6 +364,10 @@ module GitlabRoutingHelper
     [api_graphql_path, "pipelines/id/#{pipeline.id}"].join(':')
   end
 
+  def graphql_etag_pipeline_sha_path(sha)
+    [Gitlab::Routing.url_helpers.api_graphql_path, "pipelines/sha/#{sha}"].join(':')
+  end
+
   private
 
   def snippet_query_params(snippet, *args)

app/services/ci/expire_pipeline_cache_service.rb

@@ -56,6 +56,10 @@ module Ci
       url_helpers.graphql_etag_pipeline_path(pipeline)
     end
 
+    def graphql_pipeline_sha_path(sha)
+      url_helpers.graphql_etag_pipeline_sha_path(sha)
+    end
+
     # Updates ETag caches of a pipeline.
     #
     # This logic resides in a separate method so that EE can more easily extend
@@ -72,6 +76,7 @@ module Ci
       each_pipelines_merge_request_path(pipeline) do |path|
         store.touch(path)
       end
+      store.touch(graphql_pipeline_sha_path(pipeline.sha))
 
       pipeline.self_with_ancestors_and_descendants.each do |relative_pipeline|
         store.touch(project_pipeline_path(relative_pipeline.project, relative_pipeline))

doc/api/graphql/reference/index.md

@@ -834,6 +834,7 @@ Input type: `CommitCreateInput`
 | ---- | ---- | ----------- |
 | <a id="mutationcommitcreateclientmutationid"></a>`clientMutationId` | [`String`](#string) | A unique identifier for the client performing the mutation. |
 | <a id="mutationcommitcreatecommit"></a>`commit` | [`Commit`](#commit) | The commit after mutation. |
+| <a id="mutationcommitcreatecommitpipelinepath"></a>`commitPipelinePath` | [`String`](#string) | ETag path for the commit's pipeline. |
 | <a id="mutationcommitcreateerrors"></a>`errors` | [`[String!]!`](#string) | Errors encountered during execution of the mutation. |
 
 ### `Mutation.configureSast`

doc/development/fe_guide/graphql.md

@@ -817,7 +817,7 @@ apollo: {
 },
 ```
 
-Then, because Etags depend on the request being a `GET` instead of GraphQL's usual `POST`, but our default link library does not support `GET` we need to let our defaut Apollo client know to use a different library.
+Then, because Etags depend on the request being a `GET` instead of GraphQL's usual `POST`, but our default link library does not support `GET` we need to let our default Apollo client know to use a different library.
 
 ```javascript
 /* componentMountIndex.js */

lib/gitlab/etag_caching/router/graphql.rb

@@ -12,6 +12,11 @@ module Gitlab
             %r(\Apipelines/id/\d+\z),
             'pipelines_graph',
             'continuous_integration'
+          ],
+          [
+            %r(\Apipelines/sha/\w+\z),
+            'ci_editor',
+            'pipeline_authoring'
           ]
         ].map(&method(:build_route)).freeze
 

spec/factories/ci/pipelines.rb

@@ -237,7 +237,7 @@ FactoryBot.define do
       trait :merged_result_pipeline do
         detached_merge_request_pipeline
 
-        sha { 'test-merge-sha'}
+        sha { 'testMergeSha12312' }
         ref { merge_request.merge_ref_path }
         source_sha { merge_request.source_branch_sha }
         target_sha { merge_request.target_branch_sha }

spec/factories/merge_requests.rb

@@ -279,7 +279,7 @@ FactoryBot.define do
 
     trait :with_merge_request_pipeline do
       transient do
-        merge_sha { 'test-merge-sha' }
+        merge_sha { 'testmergesha123' }
         source_sha { source_branch_sha }
         target_sha { target_branch_sha }
       end

spec/graphql/mutations/commits/create_spec.rb

@@ -24,11 +24,12 @@ RSpec.describe Mutations::Commits::Create do
     let(:branch) { 'master' }
     let(:start_branch) { nil }
     let(:message) { 'Commit message' }
+    let(:file_path) { "#{SecureRandom.uuid}.md" }
     let(:actions) do
       [
         {
           action: 'create',
-          file_path: 'NEW_FILE.md',
+          file_path: file_path,
           content: 'Hello'
         }
       ]
@@ -68,12 +69,17 @@ RSpec.describe Mutations::Commits::Create do
       end
 
       context 'when service successfully creates a new commit' do
+        it "returns the ETag path for the commit's pipeline" do
+          commit_pipeline_path = subject[:commit_pipeline_path]
+          expect(commit_pipeline_path).to match(%r(pipelines/sha/\w+))
+        end
+
         it 'returns a new commit' do
           expect(mutated_commit).to have_attributes(message: message, project: project)
           expect(subject[:errors]).to be_empty
 
           expect_to_contain_deltas([
-            a_hash_including(a_mode: '0', b_mode: '100644', new_file: true, new_path: 'NEW_FILE.md')
+            a_hash_including(a_mode: '0', b_mode: '100644', new_file: true, new_path: file_path)
           ])
         end
       end

spec/helpers/gitlab_routing_helper_spec.rb

@@ -353,7 +353,12 @@ RSpec.describe GitlabRoutingHelper do
 
   context 'GraphQL ETag paths' do
     context 'with pipelines' do
-      let(:pipeline) { double(id: 5) }
+      let(:sha) { 'b08774cb1a11ecdc27a82c5f444a69ea7e038ede' }
+      let(:pipeline) { double(id: 5 ) }
+
+      it 'returns an ETag path for a pipeline sha' do
+        expect(graphql_etag_pipeline_sha_path(sha)).to eq('/api/graphql:pipelines/sha/b08774cb1a11ecdc27a82c5f444a69ea7e038ede')
+      end
 
       it 'returns an ETag path for pipelines' do
         expect(graphql_etag_pipeline_path(pipeline)).to eq('/api/graphql:pipelines/id/5')

spec/lib/gitlab/etag_caching/router_spec.rb

@@ -22,6 +22,14 @@ RSpec.describe Gitlab::EtagCaching::Router do
         expect(result.name).to eq 'pipelines_graph'
         expect(result.router).to eq Gitlab::EtagCaching::Router::Graphql
       end
+
+      it 'matches pipeline sha endpoint' do
+        result = match_route('/api/graphql', 'pipelines/sha/4asda2jiwjdqw0')
+
+        expect(result).to be_present
+        expect(result.name).to eq 'ci_editor'
+        expect(result.router).to eq Gitlab::EtagCaching::Router::Graphql
+      end
     end
   end
 

spec/services/ci/expire_pipeline_cache_service_spec.rb

@@ -15,12 +15,14 @@ RSpec.describe Ci::ExpirePipelineCacheService do
       new_mr_pipelines_path = "/#{project.full_path}/-/merge_requests/new.json"
       pipeline_path = "/#{project.full_path}/-/pipelines/#{pipeline.id}.json"
       graphql_pipeline_path = "/api/graphql:pipelines/id/#{pipeline.id}"
+      graphql_pipeline_sha_path = "/api/graphql:pipelines/sha/#{pipeline.sha}"
 
       expect_next_instance_of(Gitlab::EtagCaching::Store) do |store|
         expect(store).to receive(:touch).with(pipelines_path)
         expect(store).to receive(:touch).with(new_mr_pipelines_path)
         expect(store).to receive(:touch).with(pipeline_path)
         expect(store).to receive(:touch).with(graphql_pipeline_path)
+        expect(store).to receive(:touch).with(graphql_pipeline_sha_path)
       end
 
       subject.execute(pipeline)