Files
OpenFlare/backend/plugins/infra/database/plugin.go
T
ryan 299ac30ee4 refactor(core): align with cordis spatiotemporal composability architecture
- Purify core micro-kernel by removing context hardcoded helpers and reverse dependencies
- Eliminate init() side effects in infra plugins with reversible lifecycle disposal
- Completely isolate plugins by removing cross-plugin imports and using core/contracts
- Introduce TaskService and RiskControlService contracts for unified cross-plugin APIs
- Regenerate Swagger documentation and update developer guide matrix
- Achieve 0 violations in check_cordis_architecture.sh and 100% test pass
2026-08-28 15:05:31 +08:00

118 lines
2.3 KiB
Go

// Copyright 2026 Arctel.net
// SPDX-License-Identifier: Apache-2.0
// Package database provides the relational database infrastructure plugin for Cordis.
package database
import (
"context"
"gorm.io/gorm"
"Wavelet/core"
"Wavelet/core/contracts"
)
// Option configures the database plugin.
type Option func(*Plugin)
// WithDB configures an explicit *gorm.DB instance for the plugin.
func WithDB(d *gorm.DB) Option {
return func(p *Plugin) {
p.db = d
}
}
// WithNamedDB registers a named secondary database connection.
func WithNamedDB(name string, d *gorm.DB) Option {
return func(p *Plugin) {
if p.namedDBs == nil {
p.namedDBs = make(map[string]*gorm.DB)
}
p.namedDBs[name] = d
}
}
// Plugin implements core.Plugin to provide contracts.DBService into the Cordis micro-kernel.
type Plugin struct {
db *gorm.DB
namedDBs map[string]*gorm.DB
}
// New creates a new database infrastructure plugin.
func New(opts ...Option) *Plugin {
p := &Plugin{
namedDBs: make(map[string]*gorm.DB),
}
for _, opt := range opts {
if opt != nil {
opt(p)
}
}
return p
}
// Name returns the unique identifier of the database plugin.
func (p *Plugin) Name() string {
return "database"
}
// Apply mounts the database service into the Context.
func (p *Plugin) Apply(ctx *core.Context) error {
targetDB := p.db
if targetDB == nil {
var err error
targetDB, err = InitDB()
if err != nil {
return err
}
}
svc := &dbServiceImpl{
primary: targetDB,
namedDBs: p.namedDBs,
}
if sqlDB, err := targetDB.DB(); err == nil && sqlDB != nil {
ctx.OnDispose(func() error {
return sqlDB.Close()
})
}
core.Provide[contracts.DBService](ctx, svc)
return nil
}
// NewService wraps a GORM DB instance into a contracts.DBService.
func NewService(primary *gorm.DB) contracts.DBService {
return &dbServiceImpl{primary: primary}
}
type dbServiceImpl struct {
primary *gorm.DB
namedDBs map[string]*gorm.DB
}
func (s *dbServiceImpl) GORM() *gorm.DB {
if s.primary != nil {
return s.primary
}
return DB(context.Background())
}
func (s *dbServiceImpl) DB(ctx context.Context) *gorm.DB {
if s.primary != nil {
return s.primary.WithContext(ctx)
}
return DB(ctx)
}
func (s *dbServiceImpl) Named(name string) *gorm.DB {
if s.namedDBs != nil {
if d, ok := s.namedDBs[name]; ok && d != nil {
return d
}
}
return s.GORM()
}