Parallelize hosted pipeline

A subset of tasks in the hosted pipeline can run in parallel to speedup
the pipelinerun execution time. I identified several tasks and updated
pipeline dependency graph. There are more tasks that could be also
parallelized but it makes the graph readability more difficult. This
solution is compromise between speed and maintainability.

Signed-off-by: Ales Raszka <araszka@redhat.com>

Author: Allda

ansible/roles/operator-pipeline/templates/openshift/pipelines/operator-hosted-pipeline.yml

@@ -336,7 +336,7 @@ spec:
         name: check-permissions
         kind: Task
       runAfter:
-        - yaml-lint
+        - detect-changes
       params:
         - name: pipeline_image
           value: "$(params.pipeline_image)"
@@ -372,7 +372,7 @@ spec:
         name: set-github-pr-title
         kind: Task
       runAfter:
-        - check-permissions
+        - detect-changes
       params:
         - name: pipeline_image
           value: "$(params.pipeline_image)"
@@ -396,7 +396,7 @@ spec:
         name: read-config
         kind: Task
       runAfter:
-        - set-github-pr-title
+        - detect-changes
       params:
         - name: pipeline_image
           value: "$(params.pipeline_image)"
@@ -415,7 +415,7 @@ spec:
         name: validate-catalog-format
         kind: Task
       runAfter:
-        - read-config
+        - get-pyxis-certification-data
       when:
         - input: "$(tasks.detect-changes.results.added_or_modified_catalogs)"
           operator: notin
@@ -462,7 +462,7 @@ spec:
         name: apply-test-waivers
         kind: Task
       runAfter:
-        - build-fragment-images
+        - detect-changes
       when:
         - &bundleAdded
           input: "$(tasks.detect-changes.results.added_bundle)"
@@ -484,11 +484,44 @@ spec:
           workspace: repository
           subPath: base
 
+    - name: static-tests
+      taskRef:
+        name: run-static-tests
+        kind: Task
+      runAfter:
+        - apply-test-waivers
+      params:
+        - name: pipeline_image
+          value: "$(params.pipeline_image)"
+        - name: pull_request_url
+          value: "$(params.git_pr_url)"
+        - name: bundle_path
+          value: "$(tasks.detect-changes.results.bundle_path)"
+        - name: operator_name
+          value: "$(tasks.detect-changes.results.added_operator)"
+        - name: bundle_version
+          value: "$(tasks.detect-changes.results.added_bundle)"
+        - name: affected_catalog_operators
+          value: "$(tasks.detect-changes.results.affected_catalog_operators)"
+        - name: github_token_secret_name
+          value: "$(params.github_token_secret_name)"
+        - name: github_token_secret_key
+          value: "$(params.github_token_secret_key)"
+        - name: test_suites
+          value: "$(params.static_test_suites)"
+      workspaces:
+        - name: source
+          workspace: repository
+          subPath: src
+        - name: output
+          workspace: results
+          subPath: summary
+
     - name: content-hash
       taskRef:
         name: content-hash
       runAfter:
-        - apply-test-waivers
+        - detect-changes
       params:
         - name: pipeline_image
           value: "$(params.pipeline_image)"
@@ -502,7 +535,7 @@ spec:
     # Get cert project id
     - name: certification-project-check
       runAfter:
-        - content-hash
+        - detect-changes
       taskRef:
         name: certification-project-check
       params:
@@ -521,7 +554,7 @@ spec:
 
     - name: get-organization
       runAfter:
-        - certification-project-check
+        - detect-changes
       taskRef:
         name: get-organization
       params:
@@ -535,7 +568,13 @@ spec:
     # Get cert project related data
     - name: get-pyxis-certification-data
       runAfter:
-        - get-organization
+        - certification-project-check
+        - read-config
+        - yaml-lint
+        - check-permissions
+        - set-github-pr-title
+        - static-tests
+        - content-hash
       taskRef:
         name: get-pyxis-certification-data
       params:
@@ -561,6 +600,7 @@ spec:
     - name: verify-project
       runAfter:
         - get-pyxis-certification-data
+        - get-organization
       taskRef:
         name: verify-project
       when:
@@ -632,40 +672,6 @@ spec:
         - name: source
           value: "$(tasks.get-organization.results.organization)"
 
-    - name: static-tests
-      taskRef:
-        name: run-static-tests
-        kind: Task
-      runAfter:
-        - reserve-operator-name
-      params:
-        - name: pipeline_image
-          value: "$(params.pipeline_image)"
-        - name: pull_request_url
-          value: "$(params.git_pr_url)"
-        - name: bundle_path
-          value: "$(tasks.detect-changes.results.bundle_path)"
-        - name: operator_name
-          value: "$(tasks.detect-changes.results.added_operator)"
-        - name: bundle_version
-          value: "$(tasks.detect-changes.results.added_bundle)"
-        - name: affected_catalog_operators
-          value: "$(tasks.detect-changes.results.affected_catalog_operators)"
-        - name: github_token_secret_name
-          value: "$(params.github_token_secret_name)"
-        - name: github_token_secret_key
-          value: "$(params.github_token_secret_key)"
-        - name: test_suites
-          value: "$(params.static_test_suites)"
-      workspaces:
-        - name: source
-          workspace: repository
-          subPath: src
-        - name: output
-          workspace: results
-          subPath: summary
-
-
     # Merge user's registry tokens with service account credentials
     # used elsewhere by this pipeline.
     #
@@ -675,7 +681,7 @@ spec:
     # our credentials for that registry will be omitted.
     - name: merge-registry-credentials
       runAfter:
-        - static-tests
+        - reserve-operator-name
       taskRef:
         name: merge-registry-credentials
       when:
@@ -825,6 +831,7 @@ spec:
     - name: build-fbc-index-images
       runAfter:
         - get-supported-versions
+        - build-fragment-images
       when:
         - *catalogFileChange
       taskRef:
@@ -858,7 +865,7 @@ spec:
     # Build new temporary index using IIB
     - name: add-bundle-to-index
       runAfter:
-        - build-fbc-index-images
+        - get-supported-versions
       when:
         # Run only when a bundle is added and it doesn't use FBC
         - *bundleAdded
@@ -898,7 +905,7 @@ spec:
 
     - name: build-fbc-scratch-catalog
       runAfter:
-        - build-fbc-index-images
+        - get-supported-versions
       when:
         # Run only when a bundle is added and it uses FBC
         - *bundleAdded
@@ -1245,6 +1252,7 @@ spec:
     - name: merge-pr
       runAfter:
         - add-bundle-to-fbc-dryrun
+        - build-fbc-index-images
       taskRef:
         name: merge-pr
       params: