Tiny url improvements

dataproxy/service.go

@@ -258,6 +258,25 @@ func (s Service) validateResolveArtifactRequest(req *service.GetDataRequest) err
 	return nil
 }
 
+// GetCompleteTaskExecutionID returns the task execution identifier for the task execution with the Task ID filled in.
+// The one coming from the node execution doesn't have this as this is not data encapsulated in the flyte url.
+func (s Service) GetCompleteTaskExecutionID(ctx context.Context, taskExecID core.TaskExecutionIdentifier) (*core.TaskExecutionIdentifier, error) {
+
+	taskExecs, err := s.taskExecutionManager.ListTaskExecutions(ctx, admin.TaskExecutionListRequest{
+		NodeExecutionId: taskExecID.GetNodeExecutionId(),
+		Limit:           1,
+		Filters:         fmt.Sprintf("eq(retry_attempt,%s)", strconv.Itoa(int(taskExecID.RetryAttempt))),
+	})
+	if err != nil {
+		return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "failed to list task executions [%v]. Error: %v", taskExecID, err)
+	}
+	if len(taskExecs.TaskExecutions) == 0 {
+		return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "no task executions were listed [%v]. Error: %v", taskExecID, err)
+	}
+	taskExec := taskExecs.TaskExecutions[0]
+	return taskExec.Id, nil
+}
+
 func (s Service) GetTaskExecutionID(ctx context.Context, attempt int, nodeExecID core.NodeExecutionIdentifier) (*core.TaskExecutionIdentifier, error) {
 	taskExecs, err := s.taskExecutionManager.ListTaskExecutions(ctx, admin.TaskExecutionListRequest{
 		NodeExecutionId: &nodeExecID,
@@ -274,66 +293,61 @@ func (s Service) GetTaskExecutionID(ctx context.Context, attempt int, nodeExecID
 	return taskExec.Id, nil
 }
 
-func (s Service) GetData(ctx context.Context, req *service.GetDataRequest) (
+func (s Service) GetDataFromNodeExecution(ctx context.Context, nodeExecID core.NodeExecutionIdentifier, ioType common.ArtifactType, name string) (
 	*service.GetDataResponse, error) {
 
-	logger.Debugf(ctx, "resolving flyte url query: %s", req.GetFlyteUrl())
-	err := s.validateResolveArtifactRequest(req)
-	if err != nil {
-		return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "failed to validate resolve artifact request. Error: %v", err)
-	}
-
-	nodeExecID, attempt, ioType, err := common.ParseFlyteURL(req.GetFlyteUrl())
+	resp, err := s.nodeExecutionManager.GetNodeExecutionData(ctx, admin.NodeExecutionGetDataRequest{
+		Id: &nodeExecID,
+	})
 	if err != nil {
-		return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "failed to parse artifact url Error: %v", err)
+		return nil, err
 	}
 
-	// Get the data location, then decide how/where to fetch it from
-	if attempt == nil {
-		resp, err := s.nodeExecutionManager.GetNodeExecutionData(ctx, admin.NodeExecutionGetDataRequest{
-			Id: &nodeExecID,
-		})
+	var lm *core.LiteralMap
+	if ioType == common.ArtifactTypeI {
+		lm = resp.FullInputs
+	} else if ioType == common.ArtifactTypeO {
+		lm = resp.FullOutputs
+	} else {
+		// Assume deck, and create a download link request
+		dlRequest := service.CreateDownloadLinkRequest{
+			ArtifactType: service.ArtifactType_ARTIFACT_TYPE_DECK,
+			Source:       &service.CreateDownloadLinkRequest_NodeExecutionId{NodeExecutionId: &nodeExecID},
+		}
+		resp, err := s.CreateDownloadLink(ctx, &dlRequest)
 		if err != nil {
 			return nil, err
 		}
+		return &service.GetDataResponse{
+			Data: &service.GetDataResponse_PreSignedUrls{
+				PreSignedUrls: resp.PreSignedUrls,
+			},
+		}, nil
+	}
 
-		var lm *core.LiteralMap
-		if ioType == common.ArtifactTypeI {
-			lm = resp.FullInputs
-		} else if ioType == common.ArtifactTypeO {
-			lm = resp.FullOutputs
-		} else {
-			// Assume deck, and create a download link request
-			dlRequest := service.CreateDownloadLinkRequest{
-				ArtifactType: service.ArtifactType_ARTIFACT_TYPE_DECK,
-				Source:       &service.CreateDownloadLinkRequest_NodeExecutionId{NodeExecutionId: &nodeExecID},
-			}
-			resp, err := s.CreateDownloadLink(ctx, &dlRequest)
-			if err != nil {
-				return nil, err
-			}
+	if name != "" {
+		if literal, ok := lm.Literals[name]; ok {
 			return &service.GetDataResponse{
-				Data: &service.GetDataResponse_PreSignedUrls{
-					PreSignedUrls: resp.PreSignedUrls,
+				Data: &service.GetDataResponse_Literal{
+					Literal: literal,
 				},
 			}, nil
 		}
-
-		return &service.GetDataResponse{
-			Data: &service.GetDataResponse_LiteralMap{
-				LiteralMap: lm,
-			},
-		}, nil
-	}
-	// Rest of the logic handles task attempt lookups
-	var lm *core.LiteralMap
-	taskExecID, err := s.GetTaskExecutionID(ctx, *attempt, nodeExecID)
-	if err != nil {
-		return nil, err
+		return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "name [%v] not found in node execution [%v]", name, nodeExecID)
 	}
+	return &service.GetDataResponse{
+		Data: &service.GetDataResponse_LiteralMap{
+			LiteralMap: lm,
+		},
+	}, nil
+}
+
+func (s Service) GetDataFromTaskExecution(ctx context.Context, taskExecID core.TaskExecutionIdentifier, ioType common.ArtifactType, name string) (
+	*service.GetDataResponse, error) {
 
+	var lm *core.LiteralMap
 	reqT := admin.TaskExecutionGetDataRequest{
-		Id: taskExecID,
+		Id: &taskExecID,
 	}
 	resp, err := s.taskExecutionManager.GetTaskExecutionData(ctx, reqT)
 	if err != nil {
@@ -347,11 +361,51 @@ func (s Service) GetData(ctx context.Context, req *service.GetDataRequest) (
 	} else {
 		return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "deck type cannot be specified with a retry attempt, just use the node instead")
 	}
+
+	if name != "" {
+		if literal, ok := lm.Literals[name]; ok {
+			return &service.GetDataResponse{
+				Data: &service.GetDataResponse_Literal{
+					Literal: literal,
+				},
+			}, nil
+		}
+		return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "name [%v] not found in task execution [%v]", name, taskExecID)
+	}
+
 	return &service.GetDataResponse{
 		Data: &service.GetDataResponse_LiteralMap{
 			LiteralMap: lm,
 		},
 	}, nil
+
+}
+
+func (s Service) GetData(ctx context.Context, req *service.GetDataRequest) (
+	*service.GetDataResponse, error) {
+
+	logger.Debugf(ctx, "resolving flyte url query: %s", req.GetFlyteUrl())
+	err := s.validateResolveArtifactRequest(req)
+	if err != nil {
+		return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "failed to validate resolve artifact request. Error: %v", err)
+	}
+
+	executions, err := common.ParseFlyteURLToExecution(req.GetFlyteUrl())
+	if err != nil {
+		return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "failed to parse artifact url Error: %v", err)
+	}
+
+	if executions.NodeExecID != nil {
+		return s.GetDataFromNodeExecution(ctx, *executions.NodeExecID, executions.IOType, executions.LiteralName)
+	} else if executions.PartialTaskExecID != nil {
+		taskExecID, err := s.GetCompleteTaskExecutionID(ctx, *executions.PartialTaskExecID)
+		if err != nil {
+			return nil, err
+		}
+		return s.GetDataFromTaskExecution(ctx, *taskExecID, executions.IOType, executions.LiteralName)
+	}
+
+	return nil, errors.NewFlyteAdminErrorf(codes.InvalidArgument, "failed to parse get data request %v", req)
 }
 
 func NewService(cfg config.DataProxyConfig,

dataproxy/service_test.go

@@ -274,6 +274,38 @@ func TestService_GetData(t *testing.T) {
 		})
 		assert.Error(t, err)
 	})
+
+	t.Run("get individual literal without retry attempt", func(t *testing.T) {
+		res, err := s.GetData(context.Background(), &service.GetDataRequest{
+			FlyteUrl: "flyte://v1/proj/dev/wfexecid/n0-d0/i/input",
+		})
+		assert.NoError(t, err)
+		assert.True(t, proto.Equal(inputsLM.GetLiterals()["input"], res.GetLiteral()))
+		assert.Nil(t, res.GetPreSignedUrls())
+	})
+
+	t.Run("get individual literal with a retry attempt", func(t *testing.T) {
+		res, err := s.GetData(context.Background(), &service.GetDataRequest{
+			FlyteUrl: "flyte://v1/proj/dev/wfexecid/n0-d0/5/o/output",
+		})
+		assert.NoError(t, err)
+		assert.True(t, proto.Equal(outputsLM.GetLiterals()["output"], res.GetLiteral()))
+		assert.Nil(t, res.GetPreSignedUrls())
+	})
+
+	t.Run("error requesting missing name without retry attempt", func(t *testing.T) {
+		_, err := s.GetData(context.Background(), &service.GetDataRequest{
+			FlyteUrl: "flyte://v1/proj/dev/wfexecid/n0-d0/i/o5",
+		})
+		assert.Error(t, err)
+	})
+
+	t.Run("error requesting missing name with a retry attempt", func(t *testing.T) {
+		_, err := s.GetData(context.Background(), &service.GetDataRequest{
+			FlyteUrl: "flyte://v1/proj/dev/wfexecid/n0-d0/5/o/o1",
+		})
+		assert.Error(t, err)
+	})
 }
 
 func TestService_Error(t *testing.T) {

pkg/common/flyte_url.go

@@ -22,7 +22,9 @@ const (
 	ArtifactTypeD                      // deck
 )
 
-var re = regexp.MustCompile("flyte://v1/(?P<project>[a-zA-Z0-9_-]+)/(?P<domain>[a-zA-Z0-9_-]+)/(?P<exec>[a-zA-Z0-9_-]+)/(?P<node>[a-zA-Z0-9_-]+)(?:/(?P<attempt>[0-9]+))?/(?P<artifactType>[iod])$")
+var re = regexp.MustCompile("flyte://v1/(?P<project>[a-zA-Z0-9_-]+)/(?P<domain>[a-zA-Z0-9_-]+)/(?P<exec>[a-zA-Z0-9_-]+)/(?P<node>[a-zA-Z0-9_-]+)(?:/(?P<attempt>[0-9]+))?/(?P<ioType>[iod])$")
+
+var reSpecificOutput = regexp.MustCompile("flyte://v1/(?P<project>[a-zA-Z0-9_-]+)/(?P<domain>[a-zA-Z0-9_-]+)/(?P<exec>[a-zA-Z0-9_-]+)/(?P<node>[a-zA-Z0-9_-]+)(?:/(?P<attempt>[0-9]+))?/(?P<ioType>[io])/(?P<literalName>[a-zA-Z0-9_-]+)$")
 
 func MatchRegex(reg *regexp.Regexp, input string) map[string]string {
 	names := reg.SubexpNames()
@@ -37,36 +39,90 @@ func MatchRegex(reg *regexp.Regexp, input string) map[string]string {
 	return dict
 }
 
-func ParseFlyteURL(flyteURL string) (core.NodeExecutionIdentifier, *int, ArtifactType, error) {
-	// flyteURL is of the form flyte://v1/project/domain/execution_id/node_id/attempt/[iod]
+type ParsedExecution struct {
+	// Returned when the user does not request a specific attempt
+	NodeExecID *core.NodeExecutionIdentifier
+
+	// This is returned in the case where the user requested a specific attempt. But the TaskID portion of this
+	// will be empty since that information is not encapsulated in the flyte url.
+	PartialTaskExecID *core.TaskExecutionIdentifier
+
+	// The name of the input or output in the literal map
+	LiteralName string
+
+	IOType ArtifactType
+}
+
+func tryMatches(flyteURL string) map[string]string {
+	var matches map[string]string
+
+	if matches = MatchRegex(re, flyteURL); len(matches) > 0 {
+		return matches
+	} else if matches = MatchRegex(reSpecificOutput, flyteURL); len(matches) > 0 {
+		return matches
+	}
+	return nil
+}
+
+func ParseFlyteURLToExecution(flyteURL string) (ParsedExecution, error) {
+	// flyteURL can be of the following forms
+	//  flyte://v1/project/domain/execution_id/node_id/attempt/[iod]
+	//  flyte://v1/project/domain/execution_id/node_id/attempt/[io]/output_name
+	//  flyte://v1/project/domain/execution_id/node_id/[io]/output_name
+	//  flyte://v1/project/domain/execution_id/node_id/[iod]
+
 	// where i stands for inputs.pb o for outputs.pb and d for the flyte deck
 	// If the retry attempt is missing, the io requested is assumed to be for the node instead of the task execution
-	matches := MatchRegex(re, flyteURL)
+
+	matches := tryMatches(flyteURL)
+	if matches == nil {
+		return ParsedExecution{}, fmt.Errorf("failed to parse [%s]", flyteURL)
+	}
+
 	proj := matches["project"]
 	domain := matches["domain"]
 	executionID := matches["exec"]
 	nodeID := matches["node"]
-	var attemptPtr *int // nil means node execution, not a task execution
-	if attempt := matches["attempt"]; len(attempt) > 0 {
-		a, err := strconv.Atoi(attempt)
-		if err != nil {
-			return core.NodeExecutionIdentifier{}, nil, ArtifactTypeUndefined, fmt.Errorf("failed to parse attempt [%v], %v", attempt, err)
-		}
-		attemptPtr = &a
-	}
-	ioType, err := ArtifactTypeString(matches["artifactType"])
+	ioType, err := ArtifactTypeString(matches["ioType"])
 	if err != nil {
-		return core.NodeExecutionIdentifier{}, nil, ArtifactTypeUndefined, err
+		return ParsedExecution{}, err
 	}
+	literalName := matches["literalName"] // may be empty
 
-	return core.NodeExecutionIdentifier{
+	// node and task level outputs
+	nodeExecID := core.NodeExecutionIdentifier{
 		NodeId: nodeID,
 		ExecutionId: &core.WorkflowExecutionIdentifier{
 			Project: proj,
 			Domain:  domain,
 			Name:    executionID,
 		},
-	}, attemptPtr, ioType, nil
+	}
+
+	// if attempt is there, that means a task execution
+	if attempt := matches["attempt"]; len(attempt) > 0 {
+		a, err := strconv.Atoi(attempt)
+		if err != nil {
+			return ParsedExecution{}, fmt.Errorf("failed to parse attempt [%v], %v", attempt, err)
+		}
+		taskExecID := core.TaskExecutionIdentifier{
+			NodeExecutionId: &nodeExecID,
+			// checking for overflow here is probably unreasonable
+			RetryAttempt: uint32(a),
+		}
+		return ParsedExecution{
+			PartialTaskExecID: &taskExecID,
+			IOType:            ioType,
+			LiteralName:       literalName,
+		}, nil
+	}
+
+	return ParsedExecution{
+		NodeExecID:  &nodeExecID,
+		IOType:      ioType,
+		LiteralName: literalName,
+	}, nil
+
 }
 
 func FlyteURLsFromNodeExecutionID(nodeExecutionID core.NodeExecutionIdentifier, deck bool) *admin.FlyteURLs {