Add Version to Workflow Specification

engine.go

@@ -4,17 +4,19 @@ package engine
 import (
 	"context"
 	"fmt"
-
 	log "go.arcalot.io/log/v2"
-	"go.flow.arcalot.io/engine/internal/step"
-	"go.flow.arcalot.io/engine/workflow"
-	"go.flow.arcalot.io/pluginsdk/schema"
-
 	"go.flow.arcalot.io/deployer/registry"
 	"go.flow.arcalot.io/engine/config"
+	"go.flow.arcalot.io/engine/internal/step"
 	"go.flow.arcalot.io/engine/internal/yaml"
+	"go.flow.arcalot.io/engine/workflow"
+	"go.flow.arcalot.io/pluginsdk/schema"
 )
 
+var supportedVersions = map[string]struct{}{
+	"v0.1.0": {},
+}
+
 // WorkflowEngine is responsible for executing workflows and returning their result.
 type WorkflowEngine interface {
 	// RunWorkflow is a simplified shortcut to parse and immediately run a workflow.
@@ -88,6 +90,12 @@ func (w workflowEngine) Parse(
 		return nil, err
 	}
 
+	v, err := SupportedVersion(wf.Version)
+	if err != nil {
+		return nil, err
+	}
+	wf.Version = v
+
 	executor, err := workflow.NewExecutor(w.logger, w.config, w.stepRegistry)
 	if err != nil {
 		return nil, err
@@ -103,6 +111,19 @@ func (w workflowEngine) Parse(
 	}, nil
 }
 
+// SupportedVersion confirms whether a given version string
+// is in the set of supported workflow specifications. It
+// returns true when the version is in the set, false otherwise.
+// Earlier schema validation already applies version's
+// regular expression.
+func SupportedVersion(version string) (string, error) {
+	_, ok := supportedVersions[version]
+	if !ok {
+		return version, fmt.Errorf("unsupported workflow schema version: %s", version)
+	}
+	return version, nil
+}
+
 type engineWorkflow struct {
 	workflow workflow.ExecutableWorkflow
 }

engine_test.go

@@ -13,6 +13,13 @@ import (
 	"go.flow.arcalot.io/engine/config"
 )
 
+func TestEngineWorkflow_ParseVersion(t *testing.T) {
+	_, err := engine.SupportedVersion("v0.1.0")
+	assert.NoError(t, err)
+	_, err = engine.SupportedVersion("v0.11.0")
+	assert.Error(t, err)
+}
+
 func createTestEngine(t *testing.T) engine.WorkflowEngine {
 	cfg := config.Default()
 	cfg.Log.T = t
@@ -95,7 +102,8 @@ func TestEmptySteps(t *testing.T) {
 		context.Background(),
 		nil,
 		map[string][]byte{
-			"workflow.yaml": []byte(`output: []
+			"workflow.yaml": []byte(`version: v0.1.0
+output: []
 steps: []`),
 		},
 		"",
@@ -109,7 +117,8 @@ func TestNoSteps(t *testing.T) {
 		context.Background(),
 		nil,
 		map[string][]byte{
-			"workflow.yaml": []byte(`output: []`),
+			"workflow.yaml": []byte(`version: v0.1.0
+output: []`),
 		},
 		"",
 	)
@@ -122,7 +131,8 @@ func TestE2E(t *testing.T) {
 		context.Background(),
 		[]byte(`name: Arca Lot`),
 		map[string][]byte{
-			"workflow.yaml": []byte(`input:
+			"workflow.yaml": []byte(`version: v0.1.0
+input:
   root: RootObject
   objects:
     RootObject:
@@ -152,7 +162,8 @@ func TestE2EMultipleOutputs(t *testing.T) {
 		context.Background(),
 		[]byte(`name: Arca Lot`),
 		map[string][]byte{
-			"workflow.yaml": []byte(`input:
+			"workflow.yaml": []byte(`version: v0.1.0
+input:
   root: RootObject
   objects:
     RootObject:

go.mod

@@ -49,14 +49,14 @@ require (
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	go.flow.arcalot.io/testplugin v0.1.0 // indirect
-	golang.org/x/mod v0.11.0 // indirect
-	golang.org/x/net v0.11.0 // indirect
+	golang.org/x/mod v0.13.0 // indirect
+	golang.org/x/net v0.15.0 // indirect
 	golang.org/x/oauth2 v0.2.0 // indirect
-	golang.org/x/sys v0.9.0 // indirect
-	golang.org/x/term v0.9.0 // indirect
-	golang.org/x/text v0.10.0 // indirect
+	golang.org/x/sys v0.12.0 // indirect
+	golang.org/x/term v0.12.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
 	golang.org/x/time v0.2.0 // indirect
-	golang.org/x/tools v0.9.3 // indirect
+	golang.org/x/tools v0.13.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect

go.sum

@@ -184,8 +184,8 @@ golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvx
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.11.0 h1:bUO06HqtnRcc/7l71XBe4WcqTZ+3AH1J59zWDDwLKgU=
-golang.org/x/mod v0.11.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.13.0 h1:I/DsJXRlw/8l/0c24sM9yb0T4z9liZTduXvdAWYiysY=
+golang.org/x/mod v0.13.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -199,8 +199,8 @@ golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81R
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.11.0 h1:Gi2tvZIJyBtO9SDr1q9h5hEQCp/4L2RQ+ar0qjx2oNU=
-golang.org/x/net v0.11.0/go.mod h1:2L/ixqYpgIVXmeoSA/4Lu7BzTG4KIyPIryS4IsOd1oQ=
+golang.org/x/net v0.15.0 h1:ugBLEUaxABaB5AJqW9enI0ACdci2RUd4eP51NTBvuJ8=
+golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.2.0 h1:GtQkldQ9m7yvzCL1V+LrYow3Khe0eJH0w7RbX/VbaIU=
@@ -211,7 +211,7 @@ golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.2.0 h1:PUR+T4wwASmuSTYdKjYHI5TD22Wy5ogLU5qZCOLxBrI=
+golang.org/x/sync v0.3.0 h1:ftCYgMx6zT/asHUrPw8BLLscYtGznsLAnjq5RH9P66E=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -222,18 +222,18 @@ golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.9.0 h1:KS/R3tvhPqvJvwcKfnBHJwwthS11LRhmM5D59eEXa0s=
-golang.org/x/sys v0.9.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.9.0 h1:GRRCnKYhdQrD8kfRAdQ6Zcw1P0OcELxGLKJvtjVMZ28=
-golang.org/x/term v0.9.0/go.mod h1:M6DEAAIenWoTxdKrOltXcmDY3rSplQUkrvaDU5FcQyo=
+golang.org/x/term v0.12.0 h1:/ZfYdc3zq+q02Rv9vGqTeSItdzZTSNDmfTi0mBAuidU=
+golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.10.0 h1:UpjohKhiEgNc0CSauXmwYftY1+LlaC75SJwh0SgCX58=
-golang.org/x/text v0.10.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/time v0.2.0 h1:52I/1L54xyEQAYdtcSuxtiT84KGYTBGXwayxmIpNJhE=
 golang.org/x/time v0.2.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -244,8 +244,8 @@ golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBn
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
-golang.org/x/tools v0.9.3 h1:Gn1I8+64MsuTb/HpH+LmQtNas23LhUVr3rYZ0eKuaMM=
-golang.org/x/tools v0.9.3/go.mod h1:owI94Op576fPu3cIGQeHs3joujW/2Oc6MtlxbF5dfNc=
+golang.org/x/tools v0.13.0 h1:Iey4qkscZuv0VvIt8E0neZjtPVQFSc870HQ448QgEmQ=
+golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

internal/step/foreach/provider_example_test.go

@@ -16,6 +16,7 @@ import (
 
 // mainWorkflow is the workflow calling the foreach step.
 var mainWorkflow = `
+version: v0.1.0
 input:
   root: names
   objects:
@@ -43,6 +44,7 @@ output:
 `
 
 var subworkflow = `
+version: v0.1.0
 input:
   root: name
   objects:

workflow/executor_example_test.go

@@ -13,6 +13,7 @@ import (
 )
 
 var workflowYAML = `---
+version: v0.1.0
 input:
   root: RootObject
   objects:

workflow/executor_test.go

@@ -14,6 +14,7 @@ import (
 )
 
 var sharedInputWorkflowYAML = `---
+version: v0.1.0
 input:
   root: RootObject
   objects:

workflow/model.go

@@ -12,6 +12,8 @@ import (
 
 // Workflow is the primary data structure describing workflows.
 type Workflow struct {
+	// Version determines which set of the arcaflow workflow external interface will be used in the workflow.
+	Version string `json:"version"`
 	// Input describe the input schema for a workflow. These values can be referenced from expressions. The structure
 	// must be a scope described in primitive types. This is done so later on a forward reference to a step input can
 	// be used.
@@ -26,7 +28,7 @@ type Workflow struct {
 	// expressions. The keys must be the output IDs from Outputs and the values must be a StepOutputSchema object as
 	// per the Arcaflow schema.
 	OutputSchema map[string]any `json:"outputSchema"`
-	// Output is the legay way to define a single output. It conflicts the "outputs" field and if filled, will create a
+	// Output is the legacy way to define a single output. It conflicts the "outputs" field and if filled, will create a
 	// "success" output.
 	//
 	// Deprecated: use Outputs instead.
@@ -39,6 +41,23 @@ func getSchema() *schema.TypedScopeSchema[*Workflow] {
 		schema.NewStructMappedObjectSchema[*Workflow](
 			"Workflow",
 			map[string]*schema.PropertySchema{
+				"version": schema.NewPropertySchema(
+					schema.NewStringSchema(
+						schema.IntPointer(1),
+						schema.IntPointer(255),
+						regexp.MustCompile(`^v\d+\.\d+\.\d+$`)),
+					schema.NewDisplayValue(
+						schema.PointerTo("Version"),
+						schema.PointerTo("Arcaflow Workflow specification version to be used."),
+						nil,
+					),
+					true,
+					nil,
+					nil,
+					nil,
+					nil,
+					nil,
+				),
 				"input": schema.NewPropertySchema(
 					schema.NewAnySchema(),
 					schema.NewDisplayValue(

workflow/workflow_test.go

@@ -22,6 +22,7 @@ import (
 )
 
 var badWorkflowDefinition = `
+version: v0.1.0
 input:
   root: name
   objects:
@@ -70,6 +71,7 @@ func TestOutputFailed(t *testing.T) {
 }
 
 var stepCancellationWorkflowDefinition = `
+version: v0.1.0
 input:
   root: RootObject
   objects:
@@ -148,6 +150,7 @@ func TestStepCancellation(t *testing.T) {
 }
 
 var waitForSerialWorkflowDefinition = `
+version: v0.1.0
 input:
   root: RootObject
   objects:
@@ -228,6 +231,7 @@ func TestWaitForSerial(t *testing.T) {
 // Running parallel steps which wait on the same previous step sometimes causes a race condition. This needs to be investigated.
 // once the race condition if fixed reduce the wait_time to 500ms.
 var waitForParallelWorkflowDefinition = `
+version: v0.1.0
 input:
   root: RootObject
   objects: