536 lines
13 KiB
Go
536 lines
13 KiB
Go
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package db
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import (
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"context"
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"database/sql"
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"encoding/json"
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"fmt"
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"os"
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"time"
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_ "github.com/lib/pq"
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)
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// DB wraps the database connection
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type DB struct {
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conn *sql.DB
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}
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// New creates a new database connection to memory-db (K8s CNPG)
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// Expected DSN format: postgresql://app:[email protected]:5432/memory?sslmode=disable
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func New(dsn string) (*DB, error) {
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if dsn == "" {
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// Fallback: try to construct from K8s env vars
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host := os.Getenv("DATABASE_HOST")
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port := os.Getenv("DATABASE_PORT")
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name := os.Getenv("DATABASE_NAME")
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user := os.Getenv("DATABASE_USER")
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password := os.Getenv("DATABASE_PASSWORD")
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if host != "" && port != "" && name != "" && user != "" && password != "" {
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dsn = fmt.Sprintf("postgresql://%s:%s@%s:%s/%s?sslmode=disable",
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user, password, host, port, name)
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} else {
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return nil, fmt.Errorf("DATABASE_URL or K8s env vars (DATABASE_HOST, DATABASE_PORT, DATABASE_NAME, DATABASE_USER, DATABASE_PASSWORD) required")
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}
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}
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conn, err := sql.Open("postgres", dsn)
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if err != nil {
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return nil, fmt.Errorf("failed to open database: %w", err)
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}
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// Test connection
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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if err := conn.PingContext(ctx); err != nil {
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return nil, fmt.Errorf("failed to ping database: %w", err)
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}
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// Set connection pool settings
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conn.SetMaxOpenConns(25)
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conn.SetMaxIdleConns(5)
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conn.SetConnMaxLifetime(5 * time.Minute)
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return &DB{conn: conn}, nil
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}
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// Close closes the database connection
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func (db *DB) Close() error {
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return db.conn.Close()
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}
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// SaveWorkflow saves or updates a workflow with canvas
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func (db *DB) SaveWorkflow(ctx context.Context, wf *Workflow) error {
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query := `
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INSERT INTO workflows (id, customer_id, name, description, status, version, nodes, edges, created_by, created_at, updated_at)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
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ON CONFLICT (id) DO UPDATE SET
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name = $3,
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description = $4,
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status = $5,
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version = $6,
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nodes = $7,
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edges = $8,
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updated_at = $11
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`
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_, err := db.conn.ExecContext(ctx, query,
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wf.ID,
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wf.CustomerID,
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wf.Name,
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wf.Description,
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wf.Status,
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wf.Version,
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wf.Nodes,
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wf.Edges,
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wf.CreatedBy,
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wf.CreatedAt,
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wf.UpdatedAt,
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)
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return err
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}
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// SaveCanvasUpdate saves canvas (nodes + edges) for a workflow
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func (db *DB) SaveCanvasUpdate(ctx context.Context, workflowID, customerID string, canvas *Canvas) error {
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nodesJSON, err := json.Marshal(canvas.Nodes)
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if err != nil {
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return fmt.Errorf("failed to marshal nodes: %w", err)
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}
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edgesJSON, err := json.Marshal(canvas.Edges)
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if err != nil {
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return fmt.Errorf("failed to marshal edges: %w", err)
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}
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query := `
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UPDATE workflows
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SET nodes = $1, edges = $2, updated_at = now()
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WHERE id = $3 AND customer_id = $4
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`
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result, err := db.conn.ExecContext(ctx, query, nodesJSON, edgesJSON, workflowID, customerID)
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if err != nil {
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return fmt.Errorf("failed to update canvas: %w", err)
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}
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rows, err := result.RowsAffected()
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if err != nil {
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return err
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}
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if rows == 0 {
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return fmt.Errorf("workflow not found: %s", workflowID)
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}
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return nil
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}
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// FetchWorkflow retrieves a workflow by ID
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func (db *DB) FetchWorkflow(ctx context.Context, workflowID, customerID string) (*Workflow, error) {
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query := `
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SELECT id, customer_id, name, description, status, version, nodes, edges, created_by, created_at, updated_at, last_executed_at
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FROM workflows
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WHERE id = $1 AND customer_id = $2
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`
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wf := &Workflow{}
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err := db.conn.QueryRowContext(ctx, query, workflowID, customerID).Scan(
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&wf.ID,
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&wf.CustomerID,
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&wf.Name,
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&wf.Description,
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&wf.Status,
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&wf.Version,
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&wf.Nodes,
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&wf.Edges,
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&wf.CreatedBy,
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&wf.CreatedAt,
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&wf.UpdatedAt,
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&wf.LastExecutedAt,
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)
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if err != nil {
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if err == sql.ErrNoRows {
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return nil, fmt.Errorf("workflow not found: %s", workflowID)
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}
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return nil, fmt.Errorf("failed to fetch workflow: %w", err)
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}
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return wf, nil
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}
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// FetchCanvas retrieves canvas (nodes + edges) for a workflow
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func (db *DB) FetchCanvas(ctx context.Context, workflowID, customerID string) (*Canvas, error) {
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query := `
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SELECT nodes, edges
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FROM workflows
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WHERE id = $1 AND customer_id = $2
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`
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var nodesJSON, edgesJSON []byte
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err := db.conn.QueryRowContext(ctx, query, workflowID, customerID).Scan(&nodesJSON, &edgesJSON)
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if err != nil {
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if err == sql.ErrNoRows {
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return nil, fmt.Errorf("workflow not found: %s", workflowID)
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}
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return nil, fmt.Errorf("failed to fetch canvas: %w", err)
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}
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var nodes []WorkflowNode
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var edges []WorkflowEdge
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if err := json.Unmarshal(nodesJSON, &nodes); err != nil {
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return nil, fmt.Errorf("failed to unmarshal nodes: %w", err)
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}
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if err := json.Unmarshal(edgesJSON, &edges); err != nil {
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return nil, fmt.Errorf("failed to unmarshal edges: %w", err)
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}
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return &Canvas{Nodes: nodes, Edges: edges}, nil
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}
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// ListWorkflows retrieves all workflows for a customer
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func (db *DB) ListWorkflows(ctx context.Context, customerID string, limit, offset int) ([]Workflow, error) {
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query := `
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SELECT id, customer_id, name, description, status, version, nodes, edges, created_by, created_at, updated_at, last_executed_at
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FROM workflows
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WHERE customer_id = $1
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ORDER BY created_at DESC
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LIMIT $2 OFFSET $3
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`
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rows, err := db.conn.QueryContext(ctx, query, customerID, limit, offset)
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if err != nil {
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return nil, fmt.Errorf("failed to list workflows: %w", err)
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}
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defer rows.Close()
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var workflows []Workflow
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for rows.Next() {
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wf := Workflow{}
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err := rows.Scan(
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&wf.ID,
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&wf.CustomerID,
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&wf.Name,
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&wf.Description,
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&wf.Status,
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&wf.Version,
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&wf.Nodes,
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&wf.Edges,
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&wf.CreatedBy,
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&wf.CreatedAt,
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&wf.UpdatedAt,
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&wf.LastExecutedAt,
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)
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if err != nil {
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return nil, fmt.Errorf("failed to scan workflow: %w", err)
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}
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workflows = append(workflows, wf)
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}
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return workflows, rows.Err()
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}
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// DeleteWorkflow deletes a workflow
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func (db *DB) DeleteWorkflow(ctx context.Context, workflowID, customerID string) error {
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query := `
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DELETE FROM workflows
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WHERE id = $1 AND customer_id = $2
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`
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result, err := db.conn.ExecContext(ctx, query, workflowID, customerID)
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if err != nil {
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return fmt.Errorf("failed to delete workflow: %w", err)
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}
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rows, err := result.RowsAffected()
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if err != nil {
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return err
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}
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if rows == 0 {
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return fmt.Errorf("workflow not found: %s", workflowID)
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}
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return nil
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}
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// SaveExecution saves a workflow execution record
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func (db *DB) SaveExecution(ctx context.Context, exec *WorkflowExecution) error {
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query := `
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INSERT INTO workflow_executions (id, workflow_id, customer_id, temporal_id, status, inputs, outputs, started_at, completed_at, duration_ms, error_message, error_count)
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VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)
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ON CONFLICT (id) DO UPDATE SET
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status = $5,
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outputs = $7,
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completed_at = $9,
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duration_ms = $10,
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error_message = $11,
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error_count = $12
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`
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_, err := db.conn.ExecContext(ctx, query,
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exec.ID,
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exec.WorkflowID,
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exec.CustomerID,
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exec.TemporalID,
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exec.Status,
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exec.Inputs,
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exec.Outputs,
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exec.StartedAt,
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exec.CompletedAt,
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exec.DurationMs,
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exec.ErrorMessage,
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exec.ErrorCount,
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)
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return err
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}
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// FetchExecution retrieves a workflow execution
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func (db *DB) FetchExecution(ctx context.Context, executionID string) (*WorkflowExecution, error) {
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query := `
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SELECT id, workflow_id, customer_id, temporal_id, status, inputs, outputs, started_at, completed_at, duration_ms, error_message, error_count
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FROM workflow_executions
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WHERE id = $1
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`
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exec := &WorkflowExecution{}
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err := db.conn.QueryRowContext(ctx, query, executionID).Scan(
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&exec.ID,
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&exec.WorkflowID,
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&exec.CustomerID,
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&exec.TemporalID,
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&exec.Status,
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&exec.Inputs,
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&exec.Outputs,
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&exec.StartedAt,
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&exec.CompletedAt,
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&exec.DurationMs,
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&exec.ErrorMessage,
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&exec.ErrorCount,
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)
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if err != nil {
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if err == sql.ErrNoRows {
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return nil, fmt.Errorf("execution not found: %s", executionID)
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}
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return nil, fmt.Errorf("failed to fetch execution: %w", err)
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}
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return exec, nil
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}
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// SaveExecutionLog saves an activity log entry
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func (db *DB) SaveExecutionLog(ctx context.Context, log *ExecutionLog) error {
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query := `
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INSERT INTO execution_logs (execution_id, node_id, activity_name, level, message, metadata, logged_at)
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VALUES ($1, $2, $3, $4, $5, $6, $7)
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`
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_, err := db.conn.ExecContext(ctx, query,
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log.ExecutionID,
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log.NodeID,
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log.ActivityName,
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log.Level,
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log.Message,
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log.Metadata,
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log.LoggedAt,
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)
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return err
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}
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// FetchExecutionLogs retrieves all logs for an execution
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func (db *DB) FetchExecutionLogs(ctx context.Context, executionID string) ([]ExecutionLog, error) {
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query := `
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SELECT id, execution_id, node_id, activity_name, level, message, metadata, logged_at
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FROM execution_logs
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WHERE execution_id = $1
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ORDER BY logged_at ASC
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`
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rows, err := db.conn.QueryContext(ctx, query, executionID)
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if err != nil {
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return nil, fmt.Errorf("failed to fetch execution logs: %w", err)
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}
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defer rows.Close()
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var logs []ExecutionLog
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for rows.Next() {
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log := ExecutionLog{}
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err := rows.Scan(
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&log.ID,
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&log.ExecutionID,
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&log.NodeID,
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&log.ActivityName,
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&log.Level,
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&log.Message,
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&log.Metadata,
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&log.LoggedAt,
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)
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if err != nil {
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return nil, fmt.Errorf("failed to scan log: %w", err)
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}
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logs = append(logs, log)
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}
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return logs, rows.Err()
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}
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// SaveActivityTrace saves per-activity execution trace
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func (db *DB) SaveActivityTrace(ctx context.Context, trace *ActivityTrace) error {
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query := `
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INSERT INTO activity_traces (execution_id, node_id, activity_name, parameters, result, started_at, completed_at, duration_ms, attempt, retry_reason, status, error_message)
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|
|
VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)
|
||
|
|
ON CONFLICT (id) DO UPDATE SET
|
||
|
|
status = $11,
|
||
|
|
result = $5,
|
||
|
|
completed_at = $7,
|
||
|
|
duration_ms = $8,
|
||
|
|
error_message = $12
|
||
|
|
`
|
||
|
|
|
||
|
|
_, err := db.conn.ExecContext(ctx, query,
|
||
|
|
trace.ExecutionID,
|
||
|
|
trace.NodeID,
|
||
|
|
trace.ActivityName,
|
||
|
|
trace.Parameters,
|
||
|
|
trace.Result,
|
||
|
|
trace.StartedAt,
|
||
|
|
trace.CompletedAt,
|
||
|
|
trace.DurationMs,
|
||
|
|
trace.Attempt,
|
||
|
|
trace.RetryReason,
|
||
|
|
trace.Status,
|
||
|
|
trace.ErrorMessage,
|
||
|
|
)
|
||
|
|
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
// FetchActivityTraces retrieves all activity traces for an execution
|
||
|
|
func (db *DB) FetchActivityTraces(ctx context.Context, executionID string) ([]ActivityTrace, error) {
|
||
|
|
query := `
|
||
|
|
SELECT id, execution_id, node_id, activity_name, parameters, result, started_at, completed_at, duration_ms, attempt, retry_reason, status, error_message
|
||
|
|
FROM activity_traces
|
||
|
|
WHERE execution_id = $1
|
||
|
|
ORDER BY started_at ASC
|
||
|
|
`
|
||
|
|
|
||
|
|
rows, err := db.conn.QueryContext(ctx, query, executionID)
|
||
|
|
if err != nil {
|
||
|
|
return nil, fmt.Errorf("failed to fetch activity traces: %w", err)
|
||
|
|
}
|
||
|
|
defer rows.Close()
|
||
|
|
|
||
|
|
var traces []ActivityTrace
|
||
|
|
for rows.Next() {
|
||
|
|
trace := ActivityTrace{}
|
||
|
|
err := rows.Scan(
|
||
|
|
&trace.ID,
|
||
|
|
&trace.ExecutionID,
|
||
|
|
&trace.NodeID,
|
||
|
|
&trace.ActivityName,
|
||
|
|
&trace.Parameters,
|
||
|
|
&trace.Result,
|
||
|
|
&trace.StartedAt,
|
||
|
|
&trace.CompletedAt,
|
||
|
|
&trace.DurationMs,
|
||
|
|
&trace.Attempt,
|
||
|
|
&trace.RetryReason,
|
||
|
|
&trace.Status,
|
||
|
|
&trace.ErrorMessage,
|
||
|
|
)
|
||
|
|
if err != nil {
|
||
|
|
return nil, fmt.Errorf("failed to scan trace: %w", err)
|
||
|
|
}
|
||
|
|
traces = append(traces, trace)
|
||
|
|
}
|
||
|
|
|
||
|
|
return traces, rows.Err()
|
||
|
|
}
|
||
|
|
|
||
|
|
// GetWorkflowRelations retrieves all relations for a workflow version
|
||
|
|
func (db *DB) GetWorkflowRelations(ctx context.Context, workflowID string, version int) ([]WorkflowRelation, error) {
|
||
|
|
var relations []WorkflowRelation
|
||
|
|
|
||
|
|
query := `
|
||
|
|
SELECT id, workflow_id, version, source_node_id, target_node_id,
|
||
|
|
relation_type, label, relation_wording, metadata, created_at
|
||
|
|
FROM workflow_relations
|
||
|
|
WHERE workflow_id = $1 AND version = $2
|
||
|
|
ORDER BY created_at DESC
|
||
|
|
`
|
||
|
|
|
||
|
|
rows, err := db.conn.QueryContext(ctx, query, workflowID, version)
|
||
|
|
if err != nil {
|
||
|
|
return nil, fmt.Errorf("failed to query relations: %w", err)
|
||
|
|
}
|
||
|
|
defer rows.Close()
|
||
|
|
|
||
|
|
for rows.Next() {
|
||
|
|
var rel WorkflowRelation
|
||
|
|
if err := rows.Scan(
|
||
|
|
&rel.ID,
|
||
|
|
&rel.WorkflowID,
|
||
|
|
&rel.Version,
|
||
|
|
&rel.SourceNodeID,
|
||
|
|
&rel.TargetNodeID,
|
||
|
|
&rel.RelationType,
|
||
|
|
&rel.Label,
|
||
|
|
&rel.RelationWording,
|
||
|
|
&rel.Metadata,
|
||
|
|
&rel.CreatedAt,
|
||
|
|
); err != nil {
|
||
|
|
return nil, fmt.Errorf("failed to scan relation: %w", err)
|
||
|
|
}
|
||
|
|
relations = append(relations, rel)
|
||
|
|
}
|
||
|
|
|
||
|
|
return relations, rows.Err()
|
||
|
|
}
|
||
|
|
|
||
|
|
// GetRelationVersions retrieves version history for a specific relation
|
||
|
|
func (db *DB) GetRelationVersions(ctx context.Context, workflowID string, edgeID string) ([]WorkflowRelationVersion, error) {
|
||
|
|
var versions []WorkflowRelationVersion
|
||
|
|
|
||
|
|
query := `
|
||
|
|
SELECT id, workflow_id, edge_id, version_num, operation, snapshot,
|
||
|
|
changed_at, changed_by, fields_changed
|
||
|
|
FROM workflow_relation_versions
|
||
|
|
WHERE workflow_id = $1 AND edge_id = $2
|
||
|
|
ORDER BY version_num ASC
|
||
|
|
`
|
||
|
|
|
||
|
|
rows, err := db.conn.QueryContext(ctx, query, workflowID, edgeID)
|
||
|
|
if err != nil {
|
||
|
|
return nil, fmt.Errorf("failed to query relation versions: %w", err)
|
||
|
|
}
|
||
|
|
defer rows.Close()
|
||
|
|
|
||
|
|
for rows.Next() {
|
||
|
|
var v WorkflowRelationVersion
|
||
|
|
if err := rows.Scan(
|
||
|
|
&v.ID,
|
||
|
|
&v.WorkflowID,
|
||
|
|
&v.EdgeID,
|
||
|
|
&v.VersionNum,
|
||
|
|
&v.Operation,
|
||
|
|
&v.Snapshot,
|
||
|
|
&v.ChangedAt,
|
||
|
|
&v.ChangedBy,
|
||
|
|
&v.FieldsChanged,
|
||
|
|
); err != nil {
|
||
|
|
return nil, fmt.Errorf("failed to scan version: %w", err)
|
||
|
|
}
|
||
|
|
versions = append(versions, v)
|
||
|
|
}
|
||
|
|
|
||
|
|
return versions, rows.Err()
|
||
|
|
}
|