3 files changed, 94 insertions, 1 deletions
diff --git a/lib/gitlab/ci/pipeline/seed/build.rb b/lib/gitlab/ci/pipeline/seed/build.rb
index 1f6b3853069..fc9c540088b 100644
--- a/lib/gitlab/ci/pipeline/seed/build.rb
+++ b/lib/gitlab/ci/pipeline/seed/build.rb
@@ -73,7 +73,9 @@ module Gitlab
               if bridge?
                 ::Ci::Bridge.new(attributes)
               else
-                ::Ci::Build.new(attributes)
+                ::Ci::Build.new(attributes).tap do |job|
+                  job.deployment = Seed::Deployment.new(job).to_resource
+                end
               end
             end
           end
diff --git a/lib/gitlab/ci/pipeline/seed/deployment.rb b/lib/gitlab/ci/pipeline/seed/deployment.rb
new file mode 100644
index 00000000000..8c90f03cb1d
--- /dev/null
+++ b/lib/gitlab/ci/pipeline/seed/deployment.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    module Pipeline
+      module Seed
+        class Deployment < Seed::Base
+          attr_reader :job, :environment
+
+          def initialize(job)
+            @job = job
+            @environment = Seed::Environment.new(@job)
+          end
+
+          def to_resource
+            return job.deployment if job.deployment
+            return unless job.starts_environment?
+
+            deployment = ::Deployment.new(attributes)
+            deployment.environment = environment.to_resource
+
+            # If there is a validation error on environment creation, such as
+            # the name contains invalid character, the job will fall back to a
+            # non-environment job.
+            return unless deployment.valid? && deployment.environment.persisted?
+
+            deployment.cluster_id =
+              deployment.environment.deployment_platform&.cluster_id
+
+            # Allocate IID for deployments.
+            # This operation must be outside of transactions of pipeline creations.
+            deployment.ensure_project_iid!
+
+            deployment
+          end
+
+          private
+
+          def attributes
+            {
+              project: job.project,
+              user: job.user,
+              ref: job.ref,
+              tag: job.tag,
+              sha: job.sha,
+              on_stop: job.on_stop
+            }
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/gitlab/ci/pipeline/seed/environment.rb b/lib/gitlab/ci/pipeline/seed/environment.rb
new file mode 100644
index 00000000000..2d3a1e702f9
--- /dev/null
+++ b/lib/gitlab/ci/pipeline/seed/environment.rb
@@ -0,0 +1,38 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module Ci
+    module Pipeline
+      module Seed
+        class Environment < Seed::Base
+          attr_reader :job
+
+          def initialize(job)
+            @job = job
+          end
+
+          def to_resource
+            find_environment || ::Environment.create(attributes)
+          end
+
+          private
+
+          def find_environment
+            job.project.environments.find_by_name(expanded_environment_name)
+          end
+
+          def expanded_environment_name
+            job.expanded_environment_name
+          end
+
+          def attributes
+            {
+              project: job.project,
+              name: expanded_environment_name
+            }
+          end
+        end
+      end
+    end
+  end
+end