feat: adds a part of trace funnel feature (APIs, module, handler, store, migrations) implementation (#7763)

* feat: adds server and handler changes

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* feat: add tracefunnel module and handler

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* feat: add required types for tracefunnels

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* feat: db operations, module and handler implementation

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* feat: add db migrations

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* chore: add utility functions

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* test: add utility function tests

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* test: add handler tests

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* test: add trace funnel module tests

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* chore: refactor handler and utils

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* chore: add funnel validation while processing funnel steps

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* test: add more tests to utils

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* chore: fix package naming

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* chore: fix naming convention

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* chore: update normalize funnel steps

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* chore: added some improvements

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* fix: optimize funnel creation by combining insert and update operations

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* chore: fix error handling

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* feat: trace funnel state management

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* fix: updated unit tests and mocks

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* fix: review comments

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* fix: minor fixes

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* fix: update funnel migration number

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* fix: review comments and some changes

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

* fix: update modules

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

---------

Signed-off-by: Shivanshu Raj Shrivastava <shivanshu1333@gmail.com>

ee/query-service/app/server.go

@@ -298,6 +298,7 @@ func (s *Server) createPublicServer(apiHandler *api.APIHandler, web web.Web) (*h
 	apiHandler.RegisterMessagingQueuesRoutes(r, am)
 	apiHandler.RegisterThirdPartyApiRoutes(r, am)
 	apiHandler.MetricExplorerRoutes(r, am)
+	apiHandler.RegisterTraceFunnelsRoutes(r, am)
 
 	c := cors.New(cors.Options{
 		AllowedOrigins: []string{"*"},

pkg/modules/tracefunnel/impltracefunnel/handler.go

@@ -0,0 +1,235 @@
+package impltracefunnel
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/http/render"
+	"github.com/SigNoz/signoz/pkg/modules/tracefunnel"
+	"github.com/SigNoz/signoz/pkg/types/authtypes"
+	tf "github.com/SigNoz/signoz/pkg/types/tracefunneltypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/gorilla/mux"
+)
+
+type handler struct {
+	module tracefunnel.Module
+}
+
+func NewHandler(module tracefunnel.Module) tracefunnel.Handler {
+	return &handler{module: module}
+}
+
+func (handler *handler) New(rw http.ResponseWriter, r *http.Request) {
+	var req tf.PostableFunnel
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	claims, err := authtypes.ClaimsFromContext(r.Context())
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	funnel, err := handler.module.Create(r.Context(), req.Timestamp, req.Name, valuer.MustNewUUID(claims.UserID), valuer.MustNewUUID(claims.OrgID))
+	if err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"failed to create funnel: %v", err))
+		return
+	}
+
+	response := tf.ConstructFunnelResponse(funnel, &claims)
+	render.Success(rw, http.StatusOK, response)
+}
+
+func (handler *handler) UpdateSteps(rw http.ResponseWriter, r *http.Request) {
+	var req tf.PostableFunnel
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	claims, err := authtypes.ClaimsFromContext(r.Context())
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	updatedAt, err := tf.ValidateAndConvertTimestamp(req.Timestamp)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	funnel, err := handler.module.Get(r.Context(), req.FunnelID, valuer.MustNewUUID(claims.OrgID))
+	if err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"funnel not found: %v", err))
+		return
+	}
+
+	steps, err := tf.ProcessFunnelSteps(req.Steps)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	funnel.Steps = steps
+	funnel.UpdatedAt = updatedAt
+	funnel.UpdatedBy = claims.UserID
+
+	if req.Name != "" {
+		funnel.Name = req.Name
+	}
+	if req.Description != "" {
+		funnel.Description = req.Description
+	}
+
+	if err := handler.module.Update(r.Context(), funnel, valuer.MustNewUUID(claims.UserID)); err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"failed to update funnel in database: %v", err))
+		return
+	}
+
+	updatedFunnel, err := handler.module.Get(r.Context(), funnel.ID, valuer.MustNewUUID(claims.OrgID))
+	if err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"failed to get updated funnel: %v", err))
+		return
+	}
+
+	response := tf.ConstructFunnelResponse(updatedFunnel, &claims)
+	render.Success(rw, http.StatusOK, response)
+}
+
+func (handler *handler) UpdateFunnel(rw http.ResponseWriter, r *http.Request) {
+	var req tf.PostableFunnel
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	claims, err := authtypes.ClaimsFromContext(r.Context())
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	updatedAt, err := tf.ValidateAndConvertTimestamp(req.Timestamp)
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	vars := mux.Vars(r)
+	funnelID := vars["funnel_id"]
+
+	funnel, err := handler.module.Get(r.Context(), valuer.MustNewUUID(funnelID), valuer.MustNewUUID(claims.OrgID))
+	if err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"funnel not found: %v", err))
+		return
+	}
+
+	funnel.UpdatedAt = updatedAt
+	funnel.UpdatedBy = claims.UserID
+
+	if req.Name != "" {
+		funnel.Name = req.Name
+	}
+	if req.Description != "" {
+		funnel.Description = req.Description
+	}
+
+	if err := handler.module.Update(r.Context(), funnel, valuer.MustNewUUID(claims.UserID)); err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"failed to update funnel in database: %v", err))
+		return
+	}
+
+	updatedFunnel, err := handler.module.Get(r.Context(), funnel.ID, valuer.MustNewUUID(claims.OrgID))
+	if err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"failed to get updated funnel: %v", err))
+		return
+	}
+
+	response := tf.ConstructFunnelResponse(updatedFunnel, &claims)
+	render.Success(rw, http.StatusOK, response)
+}
+
+func (handler *handler) List(rw http.ResponseWriter, r *http.Request) {
+	claims, err := authtypes.ClaimsFromContext(r.Context())
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	funnels, err := handler.module.List(r.Context(), valuer.MustNewUUID(claims.OrgID))
+	if err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"failed to list funnels: %v", err))
+		return
+	}
+
+	var response []tf.GettableFunnel
+	for _, f := range funnels {
+		response = append(response, tf.ConstructFunnelResponse(f, &claims))
+	}
+
+	render.Success(rw, http.StatusOK, response)
+}
+
+func (handler *handler) Get(rw http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	funnelID := vars["funnel_id"]
+
+	claims, err := authtypes.ClaimsFromContext(r.Context())
+
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	funnel, err := handler.module.Get(r.Context(), valuer.MustNewUUID(funnelID), valuer.MustNewUUID(claims.OrgID))
+	if err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"funnel not found: %v", err))
+		return
+	}
+	response := tf.ConstructFunnelResponse(funnel, &claims)
+	render.Success(rw, http.StatusOK, response)
+}
+
+func (handler *handler) Delete(rw http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	funnelID := vars["funnel_id"]
+
+	claims, err := authtypes.ClaimsFromContext(r.Context())
+
+	if err != nil {
+		render.Error(rw, err)
+		return
+	}
+
+	if err := handler.module.Delete(r.Context(), valuer.MustNewUUID(funnelID), valuer.MustNewUUID(claims.OrgID)); err != nil {
+		render.Error(rw, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"failed to delete funnel: %v", err))
+		return
+	}
+
+	render.Success(rw, http.StatusOK, nil)
+}

pkg/modules/tracefunnel/impltracefunnel/handler_test.go

@@ -0,0 +1,173 @@
+package impltracefunnel
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/SigNoz/signoz/pkg/types"
+	"github.com/SigNoz/signoz/pkg/types/authtypes"
+	traceFunnels "github.com/SigNoz/signoz/pkg/types/tracefunneltypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/gorilla/mux"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+)
+
+type MockModule struct {
+	mock.Mock
+}
+
+func (m *MockModule) Create(ctx context.Context, timestamp int64, name string, userID valuer.UUID, orgID valuer.UUID) (*traceFunnels.StorableFunnel, error) {
+	args := m.Called(ctx, timestamp, name, userID, orgID)
+	return args.Get(0).(*traceFunnels.StorableFunnel), args.Error(1)
+}
+
+func (m *MockModule) Get(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) (*traceFunnels.StorableFunnel, error) {
+	args := m.Called(ctx, funnelID, orgID)
+	return args.Get(0).(*traceFunnels.StorableFunnel), args.Error(1)
+}
+
+func (m *MockModule) Update(ctx context.Context, funnel *traceFunnels.StorableFunnel, userID valuer.UUID) error {
+	args := m.Called(ctx, funnel, userID)
+	return args.Error(0)
+}
+
+func (m *MockModule) List(ctx context.Context, orgID valuer.UUID) ([]*traceFunnels.StorableFunnel, error) {
+	args := m.Called(ctx, orgID)
+	return args.Get(0).([]*traceFunnels.StorableFunnel), args.Error(1)
+}
+
+func (m *MockModule) Delete(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) error {
+	args := m.Called(ctx, funnelID, orgID)
+	return args.Error(0)
+}
+
+func (m *MockModule) Save(ctx context.Context, funnel *traceFunnels.StorableFunnel, userID valuer.UUID, orgID valuer.UUID) error {
+	args := m.Called(ctx, funnel, userID, orgID)
+	return args.Error(0)
+}
+
+func (m *MockModule) GetFunnelMetadata(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) (int64, int64, string, error) {
+	args := m.Called(ctx, funnelID, orgID)
+	return args.Get(0).(int64), args.Get(1).(int64), args.String(2), args.Error(3)
+}
+
+func TestHandler_List(t *testing.T) {
+	mockModule := new(MockModule)
+	handler := NewHandler(mockModule)
+
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/trace-funnels/list", nil)
+
+	orgID := valuer.GenerateUUID()
+	claims := authtypes.Claims{
+		OrgID: orgID.String(),
+	}
+	req = req.WithContext(authtypes.NewContextWithClaims(req.Context(), claims))
+
+	rr := httptest.NewRecorder()
+
+	funnel1ID := valuer.GenerateUUID()
+	funnel2ID := valuer.GenerateUUID()
+	expectedFunnels := []*traceFunnels.StorableFunnel{
+		{
+			Identifiable: types.Identifiable{
+				ID: funnel1ID,
+			},
+			Name:  "funnel-1",
+			OrgID: orgID,
+		},
+		{
+			Identifiable: types.Identifiable{
+				ID: funnel2ID,
+			},
+			Name:  "funnel-2",
+			OrgID: orgID,
+		},
+	}
+
+	mockModule.On("List", req.Context(), orgID).Return(expectedFunnels, nil)
+
+	handler.List(rr, req)
+
+	assert.Equal(t, http.StatusOK, rr.Code)
+
+	var response struct {
+		Status string                        `json:"status"`
+		Data   []traceFunnels.GettableFunnel `json:"data"`
+	}
+	err := json.Unmarshal(rr.Body.Bytes(), &response)
+	assert.NoError(t, err)
+	assert.Equal(t, "success", response.Status)
+	assert.Len(t, response.Data, 2)
+	assert.Equal(t, "funnel-1", response.Data[0].FunnelName)
+	assert.Equal(t, "funnel-2", response.Data[1].FunnelName)
+
+	mockModule.AssertExpectations(t)
+}
+
+func TestHandler_Get(t *testing.T) {
+	mockModule := new(MockModule)
+	handler := NewHandler(mockModule)
+
+	funnelID := valuer.GenerateUUID()
+	orgID := valuer.GenerateUUID()
+	req := httptest.NewRequest(http.MethodGet, "/api/v1/trace-funnels/"+funnelID.String(), nil)
+	req = mux.SetURLVars(req, map[string]string{"funnel_id": funnelID.String()})
+	req = req.WithContext(authtypes.NewContextWithClaims(req.Context(), authtypes.Claims{
+		OrgID: orgID.String(),
+	}))
+
+	rr := httptest.NewRecorder()
+
+	expectedFunnel := &traceFunnels.StorableFunnel{
+		Identifiable: types.Identifiable{
+			ID: funnelID,
+		},
+		Name:  "test-funnel",
+		OrgID: orgID,
+	}
+
+	mockModule.On("Get", req.Context(), funnelID, orgID).Return(expectedFunnel, nil)
+
+	handler.Get(rr, req)
+
+	assert.Equal(t, http.StatusOK, rr.Code)
+
+	var response struct {
+		Status string                      `json:"status"`
+		Data   traceFunnels.GettableFunnel `json:"data"`
+	}
+	err := json.Unmarshal(rr.Body.Bytes(), &response)
+	assert.NoError(t, err)
+	assert.Equal(t, "success", response.Status)
+	assert.Equal(t, "test-funnel", response.Data.FunnelName)
+	assert.Equal(t, expectedFunnel.OrgID.String(), response.Data.OrgID)
+
+	mockModule.AssertExpectations(t)
+}
+
+func TestHandler_Delete(t *testing.T) {
+	mockModule := new(MockModule)
+	handler := NewHandler(mockModule)
+
+	funnelID := valuer.GenerateUUID()
+	orgID := valuer.GenerateUUID()
+	req := httptest.NewRequest(http.MethodDelete, "/api/v1/trace-funnels/"+funnelID.String(), nil)
+	req = mux.SetURLVars(req, map[string]string{"funnel_id": funnelID.String()})
+	req = req.WithContext(authtypes.NewContextWithClaims(req.Context(), authtypes.Claims{
+		OrgID: orgID.String(),
+	}))
+
+	rr := httptest.NewRecorder()
+
+	mockModule.On("Delete", req.Context(), funnelID, orgID).Return(nil)
+
+	handler.Delete(rr, req)
+
+	assert.Equal(t, http.StatusOK, rr.Code)
+
+	mockModule.AssertExpectations(t)
+}

pkg/modules/tracefunnel/impltracefunnel/module.go

@@ -0,0 +1,96 @@
+package impltracefunnel
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/modules/tracefunnel"
+	"github.com/SigNoz/signoz/pkg/types"
+	traceFunnels "github.com/SigNoz/signoz/pkg/types/tracefunneltypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+type module struct {
+	store traceFunnels.FunnelStore
+}
+
+func NewModule(store traceFunnels.FunnelStore) tracefunnel.Module {
+	return &module{
+		store: store,
+	}
+}
+
+func (module *module) Create(ctx context.Context, timestamp int64, name string, userID valuer.UUID, orgID valuer.UUID) (*traceFunnels.StorableFunnel, error) {
+	funnel := &traceFunnels.StorableFunnel{
+		Name:  name,
+		OrgID: orgID,
+	}
+	funnel.CreatedAt = time.Unix(0, timestamp*1000000) // Convert to nanoseconds
+	funnel.CreatedBy = userID.String()
+
+	// Set up the user relationship
+	funnel.CreatedByUser = &types.User{
+		Identifiable: types.Identifiable{
+			ID: userID,
+		},
+	}
+
+	if funnel.ID.IsZero() {
+		funnel.ID = valuer.GenerateUUID()
+	}
+
+	if funnel.CreatedAt.IsZero() {
+		funnel.CreatedAt = time.Now()
+	}
+	if funnel.UpdatedAt.IsZero() {
+		funnel.UpdatedAt = time.Now()
+	}
+
+	// Set created_by if CreatedByUser is present
+	if funnel.CreatedByUser != nil {
+		funnel.CreatedBy = funnel.CreatedByUser.Identifiable.ID.String()
+	}
+
+	if err := module.store.Create(ctx, funnel); err != nil {
+		return nil, fmt.Errorf("failed to create funnel: %v", err)
+	}
+
+	return funnel, nil
+}
+
+// Get gets a funnel by ID
+func (module *module) Get(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) (*traceFunnels.StorableFunnel, error) {
+	return module.store.Get(ctx, funnelID, orgID)
+}
+
+// Update updates a funnel
+func (module *module) Update(ctx context.Context, funnel *traceFunnels.StorableFunnel, userID valuer.UUID) error {
+	funnel.UpdatedBy = userID.String()
+	return module.store.Update(ctx, funnel)
+}
+
+// List lists all funnels for an organization
+func (module *module) List(ctx context.Context, orgID valuer.UUID) ([]*traceFunnels.StorableFunnel, error) {
+	funnels, err := module.store.List(ctx, orgID)
+	if err != nil {
+		return nil, fmt.Errorf("failed to list funnels: %v", err)
+	}
+
+	return funnels, nil
+}
+
+// Delete deletes a funnel
+func (module *module) Delete(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) error {
+	return module.store.Delete(ctx, funnelID, orgID)
+}
+
+// GetFunnelMetadata gets metadata for a funnel
+func (module *module) GetFunnelMetadata(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) (int64, int64, string, error) {
+	funnel, err := module.store.Get(ctx, funnelID, orgID)
+	if err != nil {
+		return 0, 0, "", err
+	}
+
+	return funnel.CreatedAt.UnixNano() / 1000000, funnel.UpdatedAt.UnixNano() / 1000000, funnel.Description, nil
+}

pkg/modules/tracefunnel/impltracefunnel/store.go

@@ -0,0 +1,114 @@
+package impltracefunnel
+
+import (
+	"context"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/sqlstore"
+	traceFunnels "github.com/SigNoz/signoz/pkg/types/tracefunneltypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+type store struct {
+	sqlstore sqlstore.SQLStore
+}
+
+func NewStore(sqlstore sqlstore.SQLStore) traceFunnels.FunnelStore {
+	return &store{sqlstore: sqlstore}
+}
+
+func (store *store) Create(ctx context.Context, funnel *traceFunnels.StorableFunnel) error {
+	// Check if a funnel with the same name already exists in the organization
+	exists, err := store.
+		sqlstore.
+		BunDB().
+		NewSelect().
+		Model(new(traceFunnels.StorableFunnel)).
+		Where("name = ? AND org_id = ?", funnel.Name, funnel.OrgID.String()).
+		Exists(ctx)
+	if err != nil {
+		return errors.Wrapf(err, errors.TypeInternal, errors.CodeInternal, "failed to check for existing funnelr")
+	}
+	if exists {
+		return store.sqlstore.WrapAlreadyExistsErrf(nil, traceFunnels.ErrFunnelAlreadyExists, "a funnel with name '%s' already exists in this organization", funnel.Name)
+	}
+
+	_, err = store.
+		sqlstore.
+		BunDB().
+		NewInsert().
+		Model(funnel).
+		Exec(ctx)
+	if err != nil {
+		return errors.Wrapf(err, errors.TypeInternal, errors.CodeInternal, "failed to create funnels")
+	}
+
+	return nil
+}
+
+// Get retrieves a funnel by ID
+func (store *store) Get(ctx context.Context, uuid valuer.UUID, orgID valuer.UUID) (*traceFunnels.StorableFunnel, error) {
+	funnel := &traceFunnels.StorableFunnel{}
+	err := store.
+		sqlstore.
+		BunDB().
+		NewSelect().
+		Model(funnel).
+		Relation("CreatedByUser").
+		Where("?TableAlias.id = ? AND ?TableAlias.org_id = ?", uuid.String(), orgID.String()).
+		Scan(ctx)
+	if err != nil {
+		return nil, errors.Wrapf(err, errors.TypeInternal, errors.CodeInternal, "failed to get funnels")
+	}
+	return funnel, nil
+}
+
+// Update updates an existing funnel
+func (store *store) Update(ctx context.Context, funnel *traceFunnels.StorableFunnel) error {
+	funnel.UpdatedAt = time.Now()
+
+	_, err := store.
+		sqlstore.
+		BunDB().
+		NewUpdate().
+		Model(funnel).
+		WherePK().
+		Exec(ctx)
+	if err != nil {
+		return store.sqlstore.WrapAlreadyExistsErrf(err, traceFunnels.ErrFunnelAlreadyExists, "a funnel with name '%s' already exists in this organization", funnel.Name)
+	}
+	return nil
+}
+
+// List retrieves all funnels for a given organization
+func (store *store) List(ctx context.Context, orgID valuer.UUID) ([]*traceFunnels.StorableFunnel, error) {
+	var funnels []*traceFunnels.StorableFunnel
+	err := store.
+		sqlstore.
+		BunDB().
+		NewSelect().
+		Model(&funnels).
+		Relation("CreatedByUser").
+		Where("?TableAlias.org_id = ?", orgID.String()).
+		Scan(ctx)
+	if err != nil {
+		return nil, errors.Wrapf(err, errors.TypeInternal, errors.CodeInternal, "failed to list funnels")
+	}
+	return funnels, nil
+}
+
+// Delete removes a funnel by ID
+func (store *store) Delete(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) error {
+	_, err := store.
+		sqlstore.
+		BunDB().
+		NewDelete().
+		Model(new(traceFunnels.StorableFunnel)).
+		Where("id = ? AND org_id = ?", funnelID.String(), orgID.String()).
+		Exec(ctx)
+	if err != nil {
+		return errors.Wrapf(err, errors.TypeInternal, errors.CodeInternal, "failed to delete funnel")
+	}
+	return nil
+}

pkg/modules/tracefunnel/tracefunnel.go

@@ -0,0 +1,38 @@
+package tracefunnel
+
+import (
+	"context"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"net/http"
+
+	traceFunnels "github.com/SigNoz/signoz/pkg/types/tracefunneltypes"
+)
+
+// Module defines the interface for trace funnel operations
+type Module interface {
+	Create(ctx context.Context, timestamp int64, name string, userID valuer.UUID, orgID valuer.UUID) (*traceFunnels.StorableFunnel, error)
+
+	Get(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) (*traceFunnels.StorableFunnel, error)
+
+	Update(ctx context.Context, funnel *traceFunnels.StorableFunnel, userID valuer.UUID) error
+
+	List(ctx context.Context, orgID valuer.UUID) ([]*traceFunnels.StorableFunnel, error)
+
+	Delete(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) error
+
+	GetFunnelMetadata(ctx context.Context, funnelID valuer.UUID, orgID valuer.UUID) (int64, int64, string, error)
+}
+
+type Handler interface {
+	New(http.ResponseWriter, *http.Request)
+
+	UpdateSteps(http.ResponseWriter, *http.Request)
+
+	UpdateFunnel(http.ResponseWriter, *http.Request)
+
+	List(http.ResponseWriter, *http.Request)
+
+	Get(http.ResponseWriter, *http.Request)
+
+	Delete(http.ResponseWriter, *http.Request)
+}

pkg/modules/tracefunnel/tracefunneltest/module_test.go

@@ -0,0 +1,183 @@
+package tracefunneltest
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/modules/tracefunnel/impltracefunnel"
+	"github.com/SigNoz/signoz/pkg/types"
+	traceFunnels "github.com/SigNoz/signoz/pkg/types/tracefunneltypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+)
+
+type MockStore struct {
+	mock.Mock
+}
+
+func (m *MockStore) Create(ctx context.Context, funnel *traceFunnels.StorableFunnel) error {
+	args := m.Called(ctx, funnel)
+	return args.Error(0)
+}
+
+func (m *MockStore) Get(ctx context.Context, uuid valuer.UUID, orgID valuer.UUID) (*traceFunnels.StorableFunnel, error) {
+	args := m.Called(ctx, uuid, orgID)
+	return args.Get(0).(*traceFunnels.StorableFunnel), args.Error(1)
+}
+
+func (m *MockStore) List(ctx context.Context, orgID valuer.UUID) ([]*traceFunnels.StorableFunnel, error) {
+	args := m.Called(ctx, orgID)
+	return args.Get(0).([]*traceFunnels.StorableFunnel), args.Error(1)
+}
+
+func (m *MockStore) Update(ctx context.Context, funnel *traceFunnels.StorableFunnel) error {
+	args := m.Called(ctx, funnel)
+	return args.Error(0)
+}
+
+func (m *MockStore) Delete(ctx context.Context, uuid valuer.UUID, orgID valuer.UUID) error {
+	args := m.Called(ctx, uuid, orgID)
+	return args.Error(0)
+}
+
+func TestModule_Create(t *testing.T) {
+	mockStore := new(MockStore)
+	module := impltracefunnel.NewModule(mockStore)
+
+	ctx := context.Background()
+	timestamp := time.Now().UnixMilli()
+	name := "test-funnel"
+	userID := valuer.GenerateUUID()
+	orgID := valuer.GenerateUUID()
+
+	mockStore.On("Create", ctx, mock.MatchedBy(func(f *traceFunnels.StorableFunnel) bool {
+		return f.Name == name &&
+			f.CreatedBy == userID.String() &&
+			f.OrgID == orgID &&
+			f.CreatedByUser != nil &&
+			f.CreatedByUser.ID == userID &&
+			f.CreatedAt.UnixNano()/1000000 == timestamp
+	})).Return(nil)
+
+	funnel, err := module.Create(ctx, timestamp, name, userID, orgID)
+	assert.NoError(t, err)
+	assert.NotNil(t, funnel)
+	assert.Equal(t, name, funnel.Name)
+	assert.Equal(t, userID.String(), funnel.CreatedBy)
+	assert.Equal(t, orgID, funnel.OrgID)
+	assert.NotNil(t, funnel.CreatedByUser)
+	assert.Equal(t, userID, funnel.CreatedByUser.ID)
+
+	mockStore.AssertExpectations(t)
+}
+
+func TestModule_Get(t *testing.T) {
+	mockStore := new(MockStore)
+	module := impltracefunnel.NewModule(mockStore)
+
+	ctx := context.Background()
+	funnelID := valuer.GenerateUUID()
+	orgID := valuer.GenerateUUID()
+	expectedFunnel := &traceFunnels.StorableFunnel{
+		Name: "test-funnel",
+	}
+
+	mockStore.On("Get", ctx, funnelID, orgID).Return(expectedFunnel, nil)
+
+	funnel, err := module.Get(ctx, funnelID, orgID)
+	assert.NoError(t, err)
+	assert.Equal(t, expectedFunnel, funnel)
+
+	mockStore.AssertExpectations(t)
+}
+
+func TestModule_Update(t *testing.T) {
+	mockStore := new(MockStore)
+	module := impltracefunnel.NewModule(mockStore)
+
+	ctx := context.Background()
+	userID := valuer.GenerateUUID()
+	funnel := &traceFunnels.StorableFunnel{
+		Name: "test-funnel",
+	}
+
+	mockStore.On("Update", ctx, funnel).Return(nil)
+
+	err := module.Update(ctx, funnel, userID)
+	assert.NoError(t, err)
+	assert.Equal(t, userID.String(), funnel.UpdatedBy)
+
+	mockStore.AssertExpectations(t)
+}
+
+func TestModule_List(t *testing.T) {
+	mockStore := new(MockStore)
+	module := impltracefunnel.NewModule(mockStore)
+
+	ctx := context.Background()
+	orgID := valuer.GenerateUUID()
+	expectedFunnels := []*traceFunnels.StorableFunnel{
+		{
+			Name:  "funnel-1",
+			OrgID: orgID,
+		},
+		{
+			Name:  "funnel-2",
+			OrgID: orgID,
+		},
+	}
+
+	mockStore.On("List", ctx, orgID).Return(expectedFunnels, nil)
+
+	funnels, err := module.List(ctx, orgID)
+	assert.NoError(t, err)
+	assert.Len(t, funnels, 2)
+	assert.Equal(t, expectedFunnels, funnels)
+
+	mockStore.AssertExpectations(t)
+}
+
+func TestModule_Delete(t *testing.T) {
+	mockStore := new(MockStore)
+	module := impltracefunnel.NewModule(mockStore)
+
+	ctx := context.Background()
+	funnelID := valuer.GenerateUUID()
+	orgID := valuer.GenerateUUID()
+
+	mockStore.On("Delete", ctx, funnelID, orgID).Return(nil)
+
+	err := module.Delete(ctx, funnelID, orgID)
+	assert.NoError(t, err)
+
+	mockStore.AssertExpectations(t)
+}
+
+func TestModule_GetFunnelMetadata(t *testing.T) {
+	mockStore := new(MockStore)
+	module := impltracefunnel.NewModule(mockStore)
+
+	ctx := context.Background()
+	funnelID := valuer.GenerateUUID()
+	orgID := valuer.GenerateUUID()
+	now := time.Now()
+	expectedFunnel := &traceFunnels.StorableFunnel{
+		Description: "test description",
+		TimeAuditable: types.TimeAuditable{
+			CreatedAt: now,
+			UpdatedAt: now,
+		},
+	}
+
+	mockStore.On("Get", ctx, funnelID, orgID).Return(expectedFunnel, nil)
+
+	createdAt, updatedAt, description, err := module.GetFunnelMetadata(ctx, funnelID, orgID)
+	assert.NoError(t, err)
+	assert.Equal(t, now.UnixNano()/1000000, createdAt)
+	assert.Equal(t, now.UnixNano()/1000000, updatedAt)
+	assert.Equal(t, "test description", description)
+
+	mockStore.AssertExpectations(t)
+}

pkg/query-service/app/http_handler.go

@@ -5229,3 +5229,30 @@ func (aH *APIHandler) getDomainInfo(w http.ResponseWriter, r *http.Request) {
 	}
 	aH.Respond(w, resp)
 }
+
+// RegisterTraceFunnelsRoutes adds trace funnels routes
+func (aH *APIHandler) RegisterTraceFunnelsRoutes(router *mux.Router, am *middleware.AuthZ) {
+	// Main trace funnels router
+	traceFunnelsRouter := router.PathPrefix("/api/v1/trace-funnels").Subrouter()
+
+	// API endpoints
+	traceFunnelsRouter.HandleFunc("/new",
+		am.EditAccess(aH.Signoz.Handlers.TraceFunnel.New)).
+		Methods(http.MethodPost)
+	traceFunnelsRouter.HandleFunc("/list",
+		am.ViewAccess(aH.Signoz.Handlers.TraceFunnel.List)).
+		Methods(http.MethodGet)
+	traceFunnelsRouter.HandleFunc("/steps/update",
+		am.EditAccess(aH.Signoz.Handlers.TraceFunnel.UpdateSteps)).
+		Methods(http.MethodPut)
+
+	traceFunnelsRouter.HandleFunc("/{funnel_id}",
+		am.ViewAccess(aH.Signoz.Handlers.TraceFunnel.Get)).
+		Methods(http.MethodGet)
+	traceFunnelsRouter.HandleFunc("/{funnel_id}",
+		am.EditAccess(aH.Signoz.Handlers.TraceFunnel.Delete)).
+		Methods(http.MethodDelete)
+	traceFunnelsRouter.HandleFunc("/{funnel_id}",
+		am.EditAccess(aH.Signoz.Handlers.TraceFunnel.UpdateFunnel)).
+		Methods(http.MethodPut)
+}

pkg/query-service/app/server.go

@@ -269,6 +269,7 @@ func (s *Server) createPublicServer(api *APIHandler, web web.Web) (*http.Server,
 	api.RegisterMessagingQueuesRoutes(r, am)
 	api.RegisterThirdPartyApiRoutes(r, am)
 	api.MetricExplorerRoutes(r, am)
+	api.RegisterTraceFunnelsRoutes(r, am)
 
 	c := cors.New(cors.Options{
 		AllowedOrigins: []string{"*"},

pkg/query-service/app/traces/v4/query_builder.go

@@ -87,7 +87,7 @@ func existsSubQueryForFixedColumn(key v3.AttributeKey, op v3.FilterOperator) (st
 	}
 }
 
-func buildTracesFilterQuery(fs *v3.FilterSet) (string, error) {
+func BuildTracesFilterQuery(fs *v3.FilterSet) (string, error) {
 	var conditions []string
 
 	if fs != nil && len(fs.Items) != 0 {
@@ -167,7 +167,7 @@ func handleEmptyValuesInGroupBy(groupBy []v3.AttributeKey) (string, error) {
 			Operator: "AND",
 			Items:    filterItems,
 		}
-		return buildTracesFilterQuery(&filterSet)
+		return BuildTracesFilterQuery(&filterSet)
 	}
 	return "", nil
 }
@@ -248,7 +248,7 @@ func buildTracesQuery(start, end, step int64, mq *v3.BuilderQuery, panelType v3.
 
 	timeFilter := fmt.Sprintf("(timestamp >= '%d' AND timestamp <= '%d') AND (ts_bucket_start >= %d AND ts_bucket_start <= %d)", tracesStart, tracesEnd, bucketStart, bucketEnd)
 
-	filterSubQuery, err := buildTracesFilterQuery(mq.Filters)
+	filterSubQuery, err := BuildTracesFilterQuery(mq.Filters)
 	if err != nil {
 		return "", err
 	}

pkg/query-service/app/traces/v4/query_builder_test.go

@@ -211,7 +211,7 @@ func Test_buildTracesFilterQuery(t *testing.T) {
 			want: "",
 		},
 		{
-			name: "Test buildTracesFilterQuery in, nin",
+			name: "Test BuildTracesFilterQuery in, nin",
 			args: args{
 				fs: &v3.FilterSet{Operator: "AND", Items: []v3.FilterItem{
 					{Key: v3.AttributeKey{Key: "method", DataType: v3.AttributeKeyDataTypeString, Type: v3.AttributeKeyTypeTag}, Value: []interface{}{"GET", "POST"}, Operator: v3.FilterOperatorIn},
@@ -226,7 +226,7 @@ func Test_buildTracesFilterQuery(t *testing.T) {
 			wantErr: false,
 		},
 		{
-			name: "Test buildTracesFilterQuery not eq, neq, gt, lt, gte, lte",
+			name: "Test BuildTracesFilterQuery not eq, neq, gt, lt, gte, lte",
 			args: args{
 				fs: &v3.FilterSet{Operator: "AND", Items: []v3.FilterItem{
 					{Key: v3.AttributeKey{Key: "duration", DataType: v3.AttributeKeyDataTypeInt64, Type: v3.AttributeKeyTypeTag}, Value: 102, Operator: v3.FilterOperatorEqual},
@@ -274,13 +274,13 @@ func Test_buildTracesFilterQuery(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			got, err := buildTracesFilterQuery(tt.args.fs)
+			got, err := BuildTracesFilterQuery(tt.args.fs)
 			if (err != nil) != tt.wantErr {
-				t.Errorf("buildTracesFilterQuery() error = %v, wantErr %v", err, tt.wantErr)
+				t.Errorf("BuildTracesFilterQuery() error = %v, wantErr %v", err, tt.wantErr)
 				return
 			}
 			if got != tt.want {
-				t.Errorf("buildTracesFilterQuery() = %v, want %v", got, tt.want)
+				t.Errorf("BuildTracesFilterQuery() = %v, want %v", got, tt.want)
 			}
 		})
 	}

pkg/signoz/handler.go

@@ -13,6 +13,8 @@ import (
 	"github.com/SigNoz/signoz/pkg/modules/quickfilter/implquickfilter"
 	"github.com/SigNoz/signoz/pkg/modules/savedview"
 	"github.com/SigNoz/signoz/pkg/modules/savedview/implsavedview"
+	"github.com/SigNoz/signoz/pkg/modules/tracefunnel"
+	"github.com/SigNoz/signoz/pkg/modules/tracefunnel/impltracefunnel"
 	"github.com/SigNoz/signoz/pkg/modules/user"
 	"github.com/SigNoz/signoz/pkg/modules/user/impluser"
 )
@@ -25,6 +27,7 @@ type Handlers struct {
 	Apdex        apdex.Handler
 	Dashboard    dashboard.Handler
 	QuickFilter  quickfilter.Handler
+	TraceFunnel  tracefunnel.Handler
 }
 
 func NewHandlers(modules Modules) Handlers {
@@ -36,5 +39,6 @@ func NewHandlers(modules Modules) Handlers {
 		Apdex:        implapdex.NewHandler(modules.Apdex),
 		Dashboard:    impldashboard.NewHandler(modules.Dashboard),
 		QuickFilter:  implquickfilter.NewHandler(modules.QuickFilter),
+		TraceFunnel:  impltracefunnel.NewHandler(modules.TraceFunnel),
 	}
 }

pkg/signoz/module.go

@@ -16,6 +16,8 @@ import (
 	"github.com/SigNoz/signoz/pkg/modules/quickfilter/implquickfilter"
 	"github.com/SigNoz/signoz/pkg/modules/savedview"
 	"github.com/SigNoz/signoz/pkg/modules/savedview/implsavedview"
+	"github.com/SigNoz/signoz/pkg/modules/tracefunnel"
+	"github.com/SigNoz/signoz/pkg/modules/tracefunnel/impltracefunnel"
 	"github.com/SigNoz/signoz/pkg/modules/user"
 	"github.com/SigNoz/signoz/pkg/modules/user/impluser"
 	"github.com/SigNoz/signoz/pkg/sqlstore"
@@ -32,6 +34,7 @@ type Modules struct {
 	Apdex       apdex.Module
 	Dashboard   dashboard.Module
 	QuickFilter quickfilter.Module
+	TraceFunnel  tracefunnel.Module
 }
 
 func NewModules(
@@ -54,5 +57,6 @@ func NewModules(
 		Dashboard:   impldashboard.NewModule(sqlstore),
 		User:        user,
 		QuickFilter: quickfilter,
+		TraceFunnel:  impltracefunnel.NewModule(impltracefunnel.NewStore(sqlstore)),
 	}
 }

pkg/signoz/provider.go

@@ -88,6 +88,7 @@ func NewSQLMigrationProviderFactories(sqlstore sqlstore.SQLStore) factory.NamedM
 		sqlmigration.NewMigratePATToFactorAPIKey(sqlstore),
 		sqlmigration.NewUpdateApiMonitoringFiltersFactory(sqlstore),
 		sqlmigration.NewAddKeyOrganizationFactory(sqlstore),
+		sqlmigration.NewAddTraceFunnelsFactory(sqlstore),
 	)
 }
 

pkg/sqlmigration/037_add_trace_funnels.go

@@ -0,0 +1,89 @@
+package sqlmigration
+
+import (
+	"context"
+	"github.com/SigNoz/signoz/pkg/factory"
+	"github.com/SigNoz/signoz/pkg/sqlstore"
+	"github.com/SigNoz/signoz/pkg/types"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/uptrace/bun"
+	"github.com/uptrace/bun/migrate"
+)
+
+// funnel Core Data Structure (funnel and funnelStep)
+type funnel struct {
+	bun.BaseModel      `bun:"table:trace_funnel"`
+	types.Identifiable // funnel id
+	types.TimeAuditable
+	types.UserAuditable
+	Name          string       `json:"funnel_name" bun:"name,type:text,notnull"` // funnel name
+	Description   string       `json:"description" bun:"description,type:text"`  // funnel description
+	OrgID         valuer.UUID  `json:"org_id" bun:"org_id,type:varchar,notnull"`
+	Steps         []funnelStep `json:"steps" bun:"steps,type:text,notnull"`
+	Tags          string       `json:"tags" bun:"tags,type:text"`
+	CreatedByUser *types.User  `json:"user" bun:"rel:belongs-to,join:created_by=id"`
+}
+
+type funnelStep struct {
+	types.Identifiable
+	Name           string `json:"name,omitempty"`        // step name
+	Description    string `json:"description,omitempty"` // step description
+	Order          int64  `json:"step_order"`
+	ServiceName    string `json:"service_name"`
+	SpanName       string `json:"span_name"`
+	Filters        string `json:"filters,omitempty"`
+	LatencyPointer string `json:"latency_pointer,omitempty"`
+	LatencyType    string `json:"latency_type,omitempty"`
+	HasErrors      bool   `json:"has_errors"`
+}
+
+type addTraceFunnels struct {
+	sqlstore sqlstore.SQLStore
+}
+
+func NewAddTraceFunnelsFactory(sqlstore sqlstore.SQLStore) factory.ProviderFactory[SQLMigration, Config] {
+	return factory.NewProviderFactory(factory.MustNewName("add_trace_funnels"), func(ctx context.Context, providerSettings factory.ProviderSettings, config Config) (SQLMigration, error) {
+		return newAddTraceFunnels(ctx, providerSettings, config, sqlstore)
+	})
+}
+
+func newAddTraceFunnels(_ context.Context, _ factory.ProviderSettings, _ Config, sqlstore sqlstore.SQLStore) (SQLMigration, error) {
+	return &addTraceFunnels{sqlstore: sqlstore}, nil
+}
+
+func (migration *addTraceFunnels) Register(migrations *migrate.Migrations) error {
+	if err := migrations.Register(migration.Up, migration.Down); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (migration *addTraceFunnels) Up(ctx context.Context, db *bun.DB) error {
+	tx, err := db.BeginTx(ctx, nil)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		_ = tx.Rollback()
+	}()
+
+	_, err = tx.NewCreateTable().
+		Model(new(funnel)).
+		ForeignKey(`("org_id") REFERENCES "organizations" ("id") ON DELETE CASCADE`).
+		IfNotExists().
+		Exec(ctx)
+	if err != nil {
+		return err
+	}
+
+	err = tx.Commit()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (migration *addTraceFunnels) Down(ctx context.Context, db *bun.DB) error {
+	return nil
+}

pkg/types/tracefunneltypes/store.go

@@ -0,0 +1,15 @@
+package tracefunneltypes
+
+import (
+	"context"
+
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+type FunnelStore interface {
+	Create(context.Context, *StorableFunnel) error
+	Get(context.Context, valuer.UUID, valuer.UUID) (*StorableFunnel, error)
+	List(context.Context, valuer.UUID) ([]*StorableFunnel, error)
+	Update(context.Context, *StorableFunnel) error
+	Delete(context.Context, valuer.UUID, valuer.UUID) error
+}

pkg/types/tracefunneltypes/tracefunnel.go

@@ -0,0 +1,98 @@
+package tracefunneltypes
+
+import (
+	"github.com/SigNoz/signoz/pkg/errors"
+	v3 "github.com/SigNoz/signoz/pkg/query-service/model/v3"
+	"github.com/SigNoz/signoz/pkg/types"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/uptrace/bun"
+)
+
+var (
+	ErrFunnelAlreadyExists = errors.MustNewCode("funnel_already_exists")
+)
+
+// StorableFunnel Core Data Structure (StorableFunnel and FunnelStep)
+type StorableFunnel struct {
+	types.Identifiable
+	types.TimeAuditable
+	types.UserAuditable
+	bun.BaseModel `bun:"table:trace_funnel"`
+	Name          string        `json:"funnel_name" bun:"name,type:text,notnull"`
+	Description   string        `json:"description" bun:"description,type:text"`
+	OrgID         valuer.UUID   `json:"org_id" bun:"org_id,type:varchar,notnull"`
+	Steps         []*FunnelStep `json:"steps" bun:"steps,type:text,notnull"`
+	Tags          string        `json:"tags" bun:"tags,type:text"`
+	CreatedByUser *types.User   `json:"user" bun:"rel:belongs-to,join:created_by=id"`
+}
+
+type FunnelStep struct {
+	ID             valuer.UUID   `json:"id,omitempty"`
+	Name           string        `json:"name,omitempty"`        // step name
+	Description    string        `json:"description,omitempty"` // step description
+	Order          int64         `json:"step_order"`
+	ServiceName    string        `json:"service_name"`
+	SpanName       string        `json:"span_name"`
+	Filters        *v3.FilterSet `json:"filters,omitempty"`
+	LatencyPointer string        `json:"latency_pointer,omitempty"`
+	LatencyType    string        `json:"latency_type,omitempty"`
+	HasErrors      bool          `json:"has_errors"`
+}
+
+// PostableFunnel represents all possible funnel-related requests
+type PostableFunnel struct {
+	FunnelID    valuer.UUID   `json:"funnel_id,omitempty"`
+	Name        string        `json:"funnel_name,omitempty"`
+	Timestamp   int64         `json:"timestamp,omitempty"`
+	Description string        `json:"description,omitempty"`
+	Steps       []*FunnelStep `json:"steps,omitempty"`
+	UserID      string        `json:"user_id,omitempty"`
+
+	// Analytics specific fields
+	StartTime  int64 `json:"start_time,omitempty"`
+	EndTime    int64 `json:"end_time,omitempty"`
+	StepAOrder int64 `json:"step_a_order,omitempty"`
+	StepBOrder int64 `json:"step_b_order,omitempty"`
+}
+
+// GettableFunnel represents all possible funnel-related responses
+type GettableFunnel struct {
+	FunnelID    string          `json:"funnel_id,omitempty"`
+	FunnelName  string          `json:"funnel_name,omitempty"`
+	Description string          `json:"description,omitempty"`
+	CreatedAt   int64           `json:"created_at,omitempty"`
+	CreatedBy   string          `json:"created_by,omitempty"`
+	UpdatedAt   int64           `json:"updated_at,omitempty"`
+	UpdatedBy   string          `json:"updated_by,omitempty"`
+	OrgID       string          `json:"org_id,omitempty"`
+	UserEmail   string          `json:"user_email,omitempty"`
+	Funnel      *StorableFunnel `json:"funnel,omitempty"`
+	Steps       []*FunnelStep   `json:"steps,omitempty"`
+}
+
+// TimeRange represents a time range for analytics
+type TimeRange struct {
+	StartTime int64 `json:"start_time"`
+	EndTime   int64 `json:"end_time"`
+}
+
+// StepTransitionRequest represents a request for step transition analytics
+type StepTransitionRequest struct {
+	TimeRange
+	StepStart int64 `json:"step_start,omitempty"`
+	StepEnd   int64 `json:"step_end,omitempty"`
+}
+
+// UserInfo represents basic user information
+type UserInfo struct {
+	ID    string `json:"id"`
+	Email string `json:"email"`
+}
+
+type FunnelStepFilter struct {
+	StepNumber     int
+	ServiceName    string
+	SpanName       string
+	LatencyPointer string // "start" or "end"
+	CustomFilters  *v3.FilterSet
+}

pkg/types/tracefunneltypes/utils.go

@@ -0,0 +1,139 @@
+package tracefunneltypes
+
+import (
+	"fmt"
+	"sort"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/errors"
+	"github.com/SigNoz/signoz/pkg/types/authtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+)
+
+// ValidateTimestamp validates a timestamp
+func ValidateTimestamp(timestamp int64, fieldName string) error {
+	if timestamp == 0 {
+		return fmt.Errorf("%s is required", fieldName)
+	}
+	if timestamp < 0 {
+		return fmt.Errorf("%s must be positive", fieldName)
+	}
+	return nil
+}
+
+// ValidateTimestampIsMilliseconds validates that a timestamp is in milliseconds
+func ValidateTimestampIsMilliseconds(timestamp int64) bool {
+	return timestamp >= 1000000000000 && timestamp <= 9999999999999
+}
+
+func ValidateFunnelSteps(steps []*FunnelStep) error {
+	if len(steps) < 2 {
+		return fmt.Errorf("funnel must have at least 2 steps")
+	}
+
+	for i, step := range steps {
+		if step.ServiceName == "" {
+			return fmt.Errorf("step %d: service name is required", i+1)
+		}
+		if step.SpanName == "" {
+			return fmt.Errorf("step %d: span name is required", i+1)
+		}
+		if step.Order < 0 {
+			return fmt.Errorf("step %d: order must be non-negative", i+1)
+		}
+	}
+
+	return nil
+}
+
+// NormalizeFunnelSteps normalizes step orders to be sequential starting from 1.
+// The function takes a slice of pointers to FunnelStep and returns a new slice with normalized step orders.
+// The input slice is left unchanged. If the input slice contains nil pointers, they will be filtered out.
+// Returns an empty slice if the input is empty or contains only nil pointers.
+func NormalizeFunnelSteps(steps []*FunnelStep) []*FunnelStep {
+	if len(steps) == 0 {
+		return []*FunnelStep{}
+	}
+
+	// Filter out nil pointers and create a new slice
+	validSteps := make([]*FunnelStep, 0, len(steps))
+	for _, step := range steps {
+		if step != nil {
+			validSteps = append(validSteps, step)
+		}
+	}
+
+	if len(validSteps) == 0 {
+		return []*FunnelStep{}
+	}
+
+	// Create a defensive copy of the valid steps
+	newSteps := make([]*FunnelStep, len(validSteps))
+	for i, step := range validSteps {
+		// Create a copy of each step to avoid modifying the original
+		stepCopy := *step
+		newSteps[i] = &stepCopy
+	}
+
+	sort.Slice(newSteps, func(i, j int) bool {
+		return newSteps[i].Order < newSteps[j].Order
+	})
+
+	for i := range newSteps {
+		newSteps[i].Order = int64(i + 1)
+	}
+
+	return newSteps
+}
+
+func ValidateAndConvertTimestamp(timestamp int64) (time.Time, error) {
+	if err := ValidateTimestamp(timestamp, "timestamp"); err != nil {
+		return time.Time{}, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"timestamp is invalid: %v", err)
+	}
+	return time.Unix(0, timestamp*1000000), nil // Convert to nanoseconds
+}
+
+func ConstructFunnelResponse(funnel *StorableFunnel, claims *authtypes.Claims) GettableFunnel {
+	resp := GettableFunnel{
+		FunnelName:  funnel.Name,
+		FunnelID:    funnel.ID.String(),
+		Steps:       funnel.Steps,
+		CreatedAt:   funnel.CreatedAt.UnixNano() / 1000000,
+		CreatedBy:   funnel.CreatedBy,
+		OrgID:       funnel.OrgID.String(),
+		UpdatedBy:   funnel.UpdatedBy,
+		UpdatedAt:   funnel.UpdatedAt.UnixNano() / 1000000,
+		Description: funnel.Description,
+	}
+
+	if funnel.CreatedByUser != nil {
+		resp.UserEmail = funnel.CreatedByUser.Email
+	} else if claims != nil {
+		resp.UserEmail = claims.Email
+	}
+
+	return resp
+}
+
+func ProcessFunnelSteps(steps []*FunnelStep) ([]*FunnelStep, error) {
+	// First validate the steps
+	if err := ValidateFunnelSteps(steps); err != nil {
+		return nil, errors.Newf(errors.TypeInvalidInput,
+			errors.CodeInvalidInput,
+			"invalid funnel steps: %v", err)
+	}
+
+	// Then process the steps
+	for i := range steps {
+		if steps[i].Order < 1 {
+			steps[i].Order = int64(i + 1)
+		}
+		if steps[i].ID.IsZero() {
+			steps[i].ID = valuer.GenerateUUID()
+		}
+	}
+
+	return NormalizeFunnelSteps(steps), nil
+}

pkg/types/tracefunneltypes/utils_test.go

@@ -0,0 +1,698 @@
+package tracefunneltypes
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"testing"
+	"time"
+
+	"github.com/SigNoz/signoz/pkg/types"
+	"github.com/SigNoz/signoz/pkg/types/authtypes"
+	"github.com/SigNoz/signoz/pkg/valuer"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestValidateTimestamp(t *testing.T) {
+	tests := []struct {
+		name        string
+		timestamp   int64
+		fieldName   string
+		expectError bool
+	}{
+		{
+			name:        "valid timestamp",
+			timestamp:   time.Now().UnixMilli(),
+			fieldName:   "timestamp",
+			expectError: false,
+		},
+		{
+			name:        "zero timestamp",
+			timestamp:   0,
+			fieldName:   "timestamp",
+			expectError: true,
+		},
+		{
+			name:        "negative timestamp",
+			timestamp:   -1,
+			fieldName:   "timestamp",
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := ValidateTimestamp(tt.timestamp, tt.fieldName)
+			if tt.expectError {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+			}
+		})
+	}
+}
+
+func TestValidateTimestampIsMilliseconds(t *testing.T) {
+	tests := []struct {
+		name      string
+		timestamp int64
+		expected  bool
+	}{
+		{
+			name:      "valid millisecond timestamp",
+			timestamp: 1700000000000, // 2023-11-14 12:00:00 UTC
+			expected:  true,
+		},
+		{
+			name:      "too small timestamp",
+			timestamp: 999999999999,
+			expected:  false,
+		},
+		{
+			name:      "too large timestamp",
+			timestamp: 10000000000000,
+			expected:  false,
+		},
+		{
+			name:      "second precision timestamp",
+			timestamp: 1700000000,
+			expected:  false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := ValidateTimestampIsMilliseconds(tt.timestamp)
+			assert.Equal(t, tt.expected, result)
+		})
+	}
+}
+
+func TestValidateFunnelSteps(t *testing.T) {
+	tests := []struct {
+		name        string
+		steps       []*FunnelStep
+		expectError bool
+	}{
+		{
+			name: "valid steps",
+			steps: []*FunnelStep{
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+			expectError: false,
+		},
+		{
+			name: "too few steps",
+			steps: []*FunnelStep{
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+			},
+			expectError: true,
+		},
+		{
+			name: "missing service name",
+			steps: []*FunnelStep{
+				{
+					ID:       valuer.GenerateUUID(),
+					Name:     "Step 1",
+					SpanName: "test-span",
+					Order:    1,
+				},
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+			expectError: true,
+		},
+		{
+			name: "missing span name",
+			steps: []*FunnelStep{
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					Order:       1,
+				},
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+			expectError: true,
+		},
+		{
+			name: "negative order",
+			steps: []*FunnelStep{
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       -1,
+				},
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := ValidateFunnelSteps(tt.steps)
+			if tt.expectError {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+			}
+		})
+	}
+}
+
+func TestNormalizeFunnelSteps(t *testing.T) {
+	tests := []struct {
+		name     string
+		steps    []*FunnelStep
+		expected []*FunnelStep
+	}{
+		{
+			name: "already normalized steps",
+			steps: []*FunnelStep{
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+			expected: []*FunnelStep{
+				{
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+				{
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+		},
+		{
+			name: "unordered steps",
+			steps: []*FunnelStep{
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+			},
+			expected: []*FunnelStep{
+				{
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+				{
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+		},
+		{
+			name: "steps with gaps in order",
+			steps: []*FunnelStep{
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 3",
+					ServiceName: "test-service",
+					SpanName:    "test-span-3",
+					Order:       3,
+				},
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+			expected: []*FunnelStep{
+				{
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+				{
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+				{
+					Name:        "Step 3",
+					ServiceName: "test-service",
+					SpanName:    "test-span-3",
+					Order:       3,
+				},
+			},
+		},
+		{
+			name: "steps with nil pointers",
+			steps: []*FunnelStep{
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+				nil,
+				{
+					ID:          valuer.GenerateUUID(),
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+			expected: []*FunnelStep{
+				{
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       1,
+				},
+				{
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+		},
+		{
+			name:     "empty steps",
+			steps:    []*FunnelStep{},
+			expected: []*FunnelStep{},
+		},
+		{
+			name:     "all nil steps",
+			steps:    []*FunnelStep{nil, nil},
+			expected: []*FunnelStep{},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := NormalizeFunnelSteps(tt.steps)
+
+			// Compare only the relevant fields
+			assert.Len(t, result, len(tt.expected))
+			for i := range result {
+				assert.Equal(t, tt.expected[i].Name, result[i].Name)
+				assert.Equal(t, tt.expected[i].ServiceName, result[i].ServiceName)
+				assert.Equal(t, tt.expected[i].SpanName, result[i].SpanName)
+				assert.Equal(t, tt.expected[i].Order, result[i].Order)
+			}
+		})
+	}
+}
+
+func TestGetClaims(t *testing.T) {
+	tests := []struct {
+		name        string
+		setup       func(*http.Request)
+		expectError bool
+	}{
+		{
+			name: "valid claims",
+			setup: func(r *http.Request) {
+				claims := authtypes.Claims{
+					UserID: "user-123",
+					OrgID:  "org-123",
+					Email:  "test@example.com",
+				}
+				*r = *r.WithContext(authtypes.NewContextWithClaims(r.Context(), claims))
+			},
+			expectError: false,
+		},
+		{
+			name: "no claims in context",
+			setup: func(r *http.Request) {
+				claims := authtypes.Claims{}
+				*r = *r.WithContext(authtypes.NewContextWithClaims(r.Context(), claims))
+			},
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			req := httptest.NewRequest("GET", "/", nil)
+			tt.setup(req)
+
+			claims, err := authtypes.ClaimsFromContext(req.Context())
+			if tt.expectError {
+				assert.Equal(t, authtypes.Claims{}, claims)
+			} else {
+				assert.NoError(t, err)
+				assert.NotNil(t, claims)
+				assert.Equal(t, "user-123", claims.UserID)
+				assert.Equal(t, "org-123", claims.OrgID)
+				assert.Equal(t, "test@example.com", claims.Email)
+			}
+		})
+	}
+}
+
+func TestValidateAndConvertTimestamp(t *testing.T) {
+	tests := []struct {
+		name        string
+		timestamp   int64
+		expectError bool
+	}{
+		{
+			name:        "valid timestamp",
+			timestamp:   time.Now().UnixMilli(),
+			expectError: false,
+		},
+		{
+			name:        "zero timestamp",
+			timestamp:   0,
+			expectError: true,
+		},
+		{
+			name:        "negative timestamp",
+			timestamp:   -1,
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result, err := ValidateAndConvertTimestamp(tt.timestamp)
+			if tt.expectError {
+				assert.Error(t, err)
+				assert.True(t, result.IsZero())
+			} else {
+				assert.NoError(t, err)
+				assert.False(t, result.IsZero())
+				// Verify the conversion from milliseconds to nanoseconds
+				assert.Equal(t, tt.timestamp*1000000, result.UnixNano())
+			}
+		})
+	}
+}
+
+func TestConstructFunnelResponse(t *testing.T) {
+	now := time.Now()
+	funnelID := valuer.GenerateUUID()
+	orgID := valuer.GenerateUUID()
+	userID := valuer.GenerateUUID()
+
+	tests := []struct {
+		name     string
+		funnel   *StorableFunnel
+		claims   *authtypes.Claims
+		expected GettableFunnel
+	}{
+		{
+			name: "with user email from funnel",
+			funnel: &StorableFunnel{
+				Identifiable: types.Identifiable{
+					ID: funnelID,
+				},
+				TimeAuditable: types.TimeAuditable{
+					CreatedAt: now,
+					UpdatedAt: now,
+				},
+				UserAuditable: types.UserAuditable{
+					CreatedBy: userID.String(),
+					UpdatedBy: userID.String(),
+				},
+				Name:  "test-funnel",
+				OrgID: orgID,
+				CreatedByUser: &types.User{
+					Identifiable: types.Identifiable{
+						ID: userID,
+					},
+					Email: "funnel@example.com",
+				},
+				Steps: []*FunnelStep{
+					{
+						ID:          valuer.GenerateUUID(),
+						Name:        "Step 1",
+						ServiceName: "test-service",
+						SpanName:    "test-span",
+						Order:       1,
+					},
+				},
+			},
+			claims: &authtypes.Claims{
+				UserID: userID.String(),
+				OrgID:  orgID.String(),
+				Email:  "claims@example.com",
+			},
+			expected: GettableFunnel{
+				FunnelName: "test-funnel",
+				FunnelID:   funnelID.String(),
+				Steps: []*FunnelStep{
+					{
+						Name:        "Step 1",
+						ServiceName: "test-service",
+						SpanName:    "test-span",
+						Order:       1,
+					},
+				},
+				CreatedAt: now.UnixNano() / 1000000,
+				CreatedBy: userID.String(),
+				UpdatedAt: now.UnixNano() / 1000000,
+				UpdatedBy: userID.String(),
+				OrgID:     orgID.String(),
+				UserEmail: "funnel@example.com",
+			},
+		},
+		{
+			name: "with user email from claims",
+			funnel: &StorableFunnel{
+				Identifiable: types.Identifiable{
+					ID: funnelID,
+				},
+				TimeAuditable: types.TimeAuditable{
+					CreatedAt: now,
+					UpdatedAt: now,
+				},
+				UserAuditable: types.UserAuditable{
+					CreatedBy: userID.String(),
+					UpdatedBy: userID.String(),
+				},
+				Name:  "test-funnel",
+				OrgID: orgID,
+				Steps: []*FunnelStep{
+					{
+						ID:          valuer.GenerateUUID(),
+						Name:        "Step 1",
+						ServiceName: "test-service",
+						SpanName:    "test-span",
+						Order:       1,
+					},
+				},
+			},
+			claims: &authtypes.Claims{
+				UserID: userID.String(),
+				OrgID:  orgID.String(),
+				Email:  "claims@example.com",
+			},
+			expected: GettableFunnel{
+				FunnelName: "test-funnel",
+				FunnelID:   funnelID.String(),
+				Steps: []*FunnelStep{
+					{
+						Name:        "Step 1",
+						ServiceName: "test-service",
+						SpanName:    "test-span",
+						Order:       1,
+					},
+				},
+				CreatedAt: now.UnixNano() / 1000000,
+				CreatedBy: userID.String(),
+				UpdatedAt: now.UnixNano() / 1000000,
+				UpdatedBy: userID.String(),
+				OrgID:     orgID.String(),
+				UserEmail: "claims@example.com",
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := ConstructFunnelResponse(tt.funnel, tt.claims)
+
+			// Compare top-level fields
+			assert.Equal(t, tt.expected.FunnelName, result.FunnelName)
+			assert.Equal(t, tt.expected.FunnelID, result.FunnelID)
+			assert.Equal(t, tt.expected.CreatedAt, result.CreatedAt)
+			assert.Equal(t, tt.expected.CreatedBy, result.CreatedBy)
+			assert.Equal(t, tt.expected.UpdatedAt, result.UpdatedAt)
+			assert.Equal(t, tt.expected.UpdatedBy, result.UpdatedBy)
+			assert.Equal(t, tt.expected.OrgID, result.OrgID)
+			assert.Equal(t, tt.expected.UserEmail, result.UserEmail)
+
+			// Compare steps
+			assert.Len(t, result.Steps, len(tt.expected.Steps))
+			for i, step := range result.Steps {
+				expectedStep := tt.expected.Steps[i]
+				assert.Equal(t, expectedStep.Name, step.Name)
+				assert.Equal(t, expectedStep.ServiceName, step.ServiceName)
+				assert.Equal(t, expectedStep.SpanName, step.SpanName)
+				assert.Equal(t, expectedStep.Order, step.Order)
+			}
+		})
+	}
+}
+
+func TestProcessFunnelSteps(t *testing.T) {
+	tests := []struct {
+		name        string
+		steps       []*FunnelStep
+		expectError bool
+	}{
+		{
+			name: "valid steps with missing IDs",
+			steps: []*FunnelStep{
+				{
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       0, // Will be normalized to 1
+				},
+				{
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       0, // Will be normalized to 2
+				},
+			},
+			expectError: false,
+		},
+		{
+			name: "invalid steps - missing service name",
+			steps: []*FunnelStep{
+				{
+					Name:     "Step 1",
+					SpanName: "test-span",
+					Order:    1,
+				},
+				{
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+			expectError: true,
+		},
+		{
+			name: "invalid steps - negative order",
+			steps: []*FunnelStep{
+				{
+					Name:        "Step 1",
+					ServiceName: "test-service",
+					SpanName:    "test-span",
+					Order:       -1,
+				},
+				{
+					Name:        "Step 2",
+					ServiceName: "test-service",
+					SpanName:    "test-span-2",
+					Order:       2,
+				},
+			},
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result, err := ProcessFunnelSteps(tt.steps)
+			if tt.expectError {
+				assert.Error(t, err)
+				assert.Nil(t, result)
+			} else {
+				assert.NoError(t, err)
+				assert.NotNil(t, result)
+				assert.Len(t, result, len(tt.steps))
+
+				// Verify IDs are generated
+				for _, step := range result {
+					assert.False(t, step.ID.IsZero())
+				}
+
+				// Verify orders are normalized
+				for i, step := range result {
+					assert.Equal(t, int64(i+1), step.Order)
+				}
+			}
+		})
+	}
+}