feat(backend)Add Semaphore and Mutex fields to Workflow Spec

Signed-off-by: ddalvi <ddalvi@redhat.com>
kubeflow · Nov 18, 2024 · 497bc6b · 497bc6b
1 parent 60a8865
commit 497bc6b
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Showing 3 changed files with 56 additions and 9 deletions.
diff --git a/backend/src/apiserver/template/v2_template.go b/backend/src/apiserver/template/v2_template.go
@@ -77,9 +77,22 @@ func (t *V2Spec) ScheduledWorkflow(modelJob *model.Job) (*scheduledworkflow.Sche
 		}
 	}
 
+	var PipelineOptions argocompiler.Options
+	for key, platform := range t.platformSpec.Platforms {
+		if key == "kubernetes" && platform != nil && platform.PipelineConfig != nil {
+			if platform.PipelineConfig.SemaphoreKey != "" {
+				PipelineOptions.SemaphoreKey = platform.PipelineConfig.SemaphoreKey
+			}
+			if platform.PipelineConfig.MutexName != "" {
+				PipelineOptions.MutexName = platform.PipelineConfig.MutexName
+			}
+			break
+		}
+	}
+
 	var obj interface{}
 	if util.CurrentExecutionType() == util.ArgoWorkflow {
-		obj, err = argocompiler.Compile(job, kubernetesSpec, nil)
+		obj, err = argocompiler.Compile(job, kubernetesSpec, &PipelineOptions)
 	} else if util.CurrentExecutionType() == util.TektonPipelineRun {
 		obj, err = tektoncompiler.Compile(job, kubernetesSpec, &tektoncompiler.Options{LauncherImage: Launcher})
 	}
@@ -300,9 +313,22 @@ func (t *V2Spec) RunWorkflow(modelRun *model.Run, options RunWorkflowOptions) (u
 		}
 	}
 
+	var PipelineOptions *argocompiler.Options
+	for key, platform := range t.platformSpec.Platforms {
+		if key == "kubernetes" && platform != nil && platform.PipelineConfig != nil {
+			if platform.PipelineConfig.SemaphoreKey != "" {
+				PipelineOptions.SemaphoreKey = platform.PipelineConfig.SemaphoreKey
+			}
+			if platform.PipelineConfig.MutexName != "" {
+				PipelineOptions.MutexName = platform.PipelineConfig.MutexName
+			}
+			break
+		}
+	}
+
 	var obj interface{}
 	if util.CurrentExecutionType() == util.ArgoWorkflow {
-		obj, err = argocompiler.Compile(job, kubernetesSpec, nil)
+		obj, err = argocompiler.Compile(job, kubernetesSpec, PipelineOptions)
 	} else if util.CurrentExecutionType() == util.TektonPipelineRun {
 		obj, err = tektoncompiler.Compile(job, kubernetesSpec, nil)
 	}

diff --git a/backend/src/v2/compiler/argocompiler/argo.go b/backend/src/v2/compiler/argocompiler/argo.go
@@ -28,6 +28,7 @@ import (
 	"google.golang.org/protobuf/proto"
 	"google.golang.org/protobuf/types/known/structpb"
 	k8score "k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	k8sres "k8s.io/apimachinery/pkg/api/resource"
 	k8smeta "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
@@ -40,6 +41,8 @@ type Options struct {
 	// optional
 	PipelineRoot string
 	// TODO(Bobgy): add an option -- dev mode, ImagePullPolicy should only be Always in dev mode.
+	SemaphoreKey string
+	MutexName    string
 }
 
 func Compile(jobArg *pipelinespec.PipelineJob, kubernetesSpecArg *pipelinespec.SinglePlatformSpec, opts *Options) (*wfapi.Workflow, error) {
@@ -76,6 +79,14 @@ func Compile(jobArg *pipelinespec.PipelineJob, kubernetesSpecArg *pipelinespec.S
 		}
 	}
 
+	var semaphoreKey, mutexName string
+	if opts != nil && opts.SemaphoreKey != "" {
+		semaphoreKey = opts.SemaphoreKey
+	}
+	if opts != nil && opts.MutexName != "" {
+		mutexName = opts.MutexName
+	}
+
 	var kubernetesSpec *pipelinespec.SinglePlatformSpec
 	if kubernetesSpecArg != nil {
 		// clone kubernetesSpecArg, because we don't want to change it
@@ -94,13 +105,9 @@ func Compile(jobArg *pipelinespec.PipelineJob, kubernetesSpecArg *pipelinespec.S
 		},
 		ObjectMeta: k8smeta.ObjectMeta{
 			GenerateName: retrieveLastValidString(spec.GetPipelineInfo().GetName()) + "-",
-			// Note, uncomment the following during development to view argo inputs/outputs in KFP UI.
-			// TODO(Bobgy): figure out what annotations we should use for v2 engine.
-			// For now, comment this annotation, so that in KFP UI, it shows argo input/output params/artifacts
-			// suitable for debugging.
-			//
+			// Uncomment during development for better debugging in KFP UI
 			// Annotations: map[string]string{
-			// 	"pipelines.kubeflow.org/v2_pipeline": "true",
+			//     "pipelines.kubeflow.org/v2_pipeline": "true",
 			// },
 		},
 		Spec: wfapi.WorkflowSpec{
@@ -117,8 +124,22 @@ func Compile(jobArg *pipelinespec.PipelineJob, kubernetesSpecArg *pipelinespec.S
 			},
 			ServiceAccountName: "pipeline-runner",
 			Entrypoint:         tmplEntrypoint,
+			Synchronization: &wfapi.Synchronization{
+				Semaphore: &wfapi.SemaphoreRef{
+					ConfigMapKeyRef: &v1.ConfigMapKeySelector{
+						LocalObjectReference: v1.LocalObjectReference{
+							Name: "semaphore-config",
+						},
+						Key: semaphoreKey,
+					},
+				},
+				Mutex: &wfapi.Mutex{
+					Name: mutexName,
+				},
+			},
 		},
 	}
+
 	c := &workflowCompiler{
 		wf:        wf,
 		templates: make(map[string]*wfapi.Template),

diff --git a/backend/src/v2/compiler/visitor.go b/backend/src/v2/compiler/visitor.go
@@ -109,7 +109,7 @@ func (state *pipelineDFS) dfs(name string, component *pipelinespec.ComponentSpec
 		}
 
 		// Add kubernetes spec to annotation
-		if state.kubernetesSpec != nil {
+		if state.kubernetesSpec != nil && state.kubernetesSpec.DeploymentSpec != nil {
 			kubernetesExecSpec, ok := state.kubernetesSpec.DeploymentSpec.Executors[executorLabel]
 			if ok {
 				state.visitor.AddKubernetesSpec(name, kubernetesExecSpec)