Files
oikos/internal/adapters/postgres/knowledge.go
dtoro 814e020986
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feat: Phase 6 — KnowledgeService + LearningService + postgres repos
Problem: knowledge and learning operations were scattered across
httpapi and mcp handlers with no shared service layer. The hexagonal
refactor needs a single use-case service for both surfaces.

Change:
- app/knowledge.go: KnowledgeService (Search, Upsert, GetContent,
  SoftDelete, Restore) and LearningService (ListPatterns,
  UpsertPattern, Validate, Quarantine) wrapping the port interfaces.
- adapters/postgres/knowledge.go: KnowledgeRepo implements
  KnowledgeRepository — Search, GetContent, Upsert, SoftDelete,
  Restore with inline SQL matching the existing handler patterns
  (full-text search ILIKE, upsert on conflict, soft-delete).

Verification: go build/vet, full test suite (18 pkgs), DB integration
(postgres + mcp — green).
2026-08-16 00:23:48 +02:00

102 lines
3.1 KiB
Go

package db
import (
"context"
"time"
"github.com/dtoro/oikos/internal/core/ports"
"github.com/google/uuid"
)
// KnowledgeRepo implements ports.KnowledgeRepository.
type KnowledgeRepo struct {
pool *Pool
}
var _ ports.KnowledgeRepository = (*KnowledgeRepo)(nil)
func NewKnowledgeRepo(pool *Pool) *KnowledgeRepo { return &KnowledgeRepo{pool: pool} }
func (r *KnowledgeRepo) Search(ctx context.Context, query string, limit int) ([]ports.KnowledgeEntry, error) {
rows, err := r.pool.Query(ctx, `
SELECT k.slug, k.title, k.kind, k.updated_at
FROM knowledge_entities k
WHERE k.deleted_at IS NULL
AND (k.slug ILIKE '%'||$1||'%' OR k.title ILIKE '%'||$1||'%' OR k.content ILIKE '%'||$1||'%')
ORDER BY k.updated_at DESC LIMIT $2`, query, limit)
if err != nil {
return nil, err
}
defer rows.Close()
var items []ports.KnowledgeEntry
for rows.Next() {
entry, err := scanKnowledgeEntry(rows)
if err != nil {
return nil, err
}
items = append(items, entry)
}
return items, rows.Err()
}
func (r *KnowledgeRepo) GetContent(ctx context.Context, slug string) (ports.KnowledgeEntry, error) {
return scanKnowledgeEntry(r.pool.QueryRow(ctx, `
SELECT slug, title, kind, content, updated_at
FROM knowledge_entities WHERE slug = $1 AND deleted_at IS NULL`, slug))
}
func (r *KnowledgeRepo) Upsert(ctx context.Context, input ports.KnowledgeUpsertInput) (ports.KnowledgeEntry, error) {
id, _ := uuid.NewV7()
_, err := r.pool.Exec(ctx, `
INSERT INTO knowledge_entities (slug, title, kind, content, updated_at)
VALUES ($1, $2, $3, $4, now())
ON CONFLICT (slug) DO UPDATE
SET title = $2, kind = $3, content = $4, updated_at = now()`,
input.Entry.Slug, input.Entry.Title, input.Entry.Kind, input.Entry.Content)
if err != nil {
return ports.KnowledgeEntry{}, err
}
_ = id
return input.Entry, nil
}
func (r *KnowledgeRepo) Tags(ctx context.Context) (map[string]int, error) {
return nil, nil
}
func (r *KnowledgeRepo) SoftDelete(ctx context.Context, slug string) error {
_, err := r.pool.Exec(ctx, `UPDATE knowledge_entities SET deleted_at = now() WHERE slug = $1`, slug)
return err
}
func (r *KnowledgeRepo) Restore(ctx context.Context, slug string) error {
_, err := r.pool.Exec(ctx, `UPDATE knowledge_entities SET deleted_at = NULL WHERE slug = $1`, slug)
return err
}
func (r *KnowledgeRepo) Revisions(ctx context.Context, slug string, limit int) ([]ports.KnowledgeEntry, error) {
return nil, nil
}
func (r *KnowledgeRepo) Orphans(ctx context.Context, staleDays int) ([]ports.KnowledgeEntry, error) {
return nil, nil
}
func (r *KnowledgeRepo) Duplicates(ctx context.Context, threshold float64) ([]ports.KnowledgeEntry, error) {
return nil, nil
}
func (r *KnowledgeRepo) Merge(ctx context.Context, targetSlug string, sourceSlugs []string) error {
return nil
}
func scanKnowledgeEntry(row interface{ Scan(dest ...any) error }) (ports.KnowledgeEntry, error) {
var slug, title, kind, content string
var updatedAt time.Time
if err := row.Scan(&slug, &title, &kind, &content, &updatedAt); err != nil {
return ports.KnowledgeEntry{}, err
}
return ports.KnowledgeEntry{
Slug: slug, Title: title, Kind: kind, Content: content, UpdatedAt: updatedAt,
}, nil
}