1436 lines
43 KiB
Go
1436 lines
43 KiB
Go
/*
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* Copyright 2026 Safronov Grigorii
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*
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* Licensed under the CDDL, Version 1.0 (the "License");
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* you may not use this file except in compliance with the License.
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*
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* You may obtain a copy of the License at
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* https://opensource.org/licenses/CDDL-1.0
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*/
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// Файл: internal/migration/schema_migrator.go
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// Назначение: Миграция схемы данных при обновлении версии СУБД
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// Новая функциональность: Прозрачное обновление схемы данных (автоматическая миграция документов)
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package migration
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import (
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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"sort"
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"strings"
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"sync"
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"time"
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"futriis/internal/log"
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"futriis/internal/storage"
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)
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// SchemaDefinition определяет схему коллекции
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type SchemaDefinition struct {
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Version string `json:"version"`
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Collections map[string]*CollectionSchema `json:"collections"`
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UpdatedAt int64 `json:"updated_at"`
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}
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// CollectionSchema определяет схему одной коллекции
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type CollectionSchema struct {
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Fields map[string]*FieldDefinition `json:"fields"`
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Required []string `json:"required"`
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Indexes []IndexDefinition `json:"indexes"`
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UpdatedAt int64 `json:"updated_at"`
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}
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// FieldDefinition определяет поле в схеме
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type FieldDefinition struct {
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Type string `json:"type"` // string, int, float, bool, array, object
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Required bool `json:"required"`
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Default interface{} `json:"default"`
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Validate string `json:"validate"` // regex, min, max, enum
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ValidateValue interface{} `json:"validate_value"`
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}
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// IndexDefinition определяет индекс
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type IndexDefinition struct {
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Name string `json:"name"`
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Fields []string `json:"fields"`
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Unique bool `json:"unique"`
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}
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// SchemaMigration представляет миграцию схемы
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type SchemaMigration struct {
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ID string
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Version string
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Description string
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Up func(tx *storage.Transaction, schema *SchemaDefinition) error
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Down func(tx *storage.Transaction, schema *SchemaDefinition) error
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CreatedAt int64
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AppliedAt int64
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}
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// SchemaMigrationRecord запись о применённой миграции схемы
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type SchemaMigrationRecord struct {
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ID string `json:"id"`
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Version string `json:"version"`
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Description string `json:"description"`
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AppliedAt int64 `json:"applied_at"`
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Success bool `json:"success"`
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Error string `json:"error,omitempty"`
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}
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// DocumentMigrationStrategy стратегия миграции документа
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type DocumentMigrationStrategy int
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const (
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StrategyInPlace DocumentMigrationStrategy = iota // Обновление на месте
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StrategyCopyNew // Копирование в новую коллекцию
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StrategyLazy // Ленивая миграция при доступе
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)
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// SchemaMigrator управляет миграциями схемы данных
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type SchemaMigrator struct {
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store *storage.Storage
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logger *log.Logger
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migrations map[string]*SchemaMigration
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applied map[string]*SchemaMigrationRecord
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mu sync.RWMutex
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migrationDir string
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currentVersion string
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targetVersion string
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schema *SchemaDefinition
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strategy DocumentMigrationStrategy
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migrationStats *MigrationStats
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}
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// MigrationStats статистика миграции
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type MigrationStats struct {
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TotalDocuments int64
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MigratedDocuments int64
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FailedDocuments int64
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SkippedDocuments int64
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StartTime int64
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EndTime int64
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mu sync.RWMutex
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}
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// NewSchemaMigrator создаёт новый мигратор схемы
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func NewSchemaMigrator(store *storage.Storage, logger *log.Logger, migrationDir string) *SchemaMigrator {
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sm := &SchemaMigrator{
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store: store,
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logger: logger,
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migrations: make(map[string]*SchemaMigration),
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applied: make(map[string]*SchemaMigrationRecord),
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migrationDir: migrationDir,
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strategy: StrategyLazy,
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migrationStats: &MigrationStats{},
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schema: &SchemaDefinition{
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Version: "1.0.0",
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Collections: make(map[string]*CollectionSchema),
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UpdatedAt: time.Now().UnixMilli(),
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},
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}
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// Создаём директорию для миграций (без паники при ошибке)
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if err := os.MkdirAll(migrationDir, 0755); err != nil {
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if logger != nil {
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logger.Error(fmt.Sprintf("Failed to create migration directory %s: %v", migrationDir, err))
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}
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}
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// Загружаем существующую схему
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sm.loadSchema()
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// Загружаем применённые миграции
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sm.loadAppliedMigrations()
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// Регистрируем встроенные миграции схемы
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sm.registerBuiltinSchemaMigrations()
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return sm
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}
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// loadSchema загружает определение схемы из файла
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func (sm *SchemaMigrator) loadSchema() {
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path := filepath.Join(sm.migrationDir, "schema.json")
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data, err := os.ReadFile(path)
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if err != nil {
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if sm.logger != nil {
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sm.logger.Debug("No existing schema found, creating default schema")
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}
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sm.createDefaultSchema()
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return
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}
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var schema SchemaDefinition
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if err := json.Unmarshal(data, &schema); err != nil {
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if sm.logger != nil {
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sm.logger.Error(fmt.Sprintf("Failed to unmarshal schema: %v", err))
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}
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sm.createDefaultSchema()
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return
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}
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if schema.Collections == nil {
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schema.Collections = make(map[string]*CollectionSchema)
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}
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if schema.Version == "" {
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schema.Version = "1.0.0"
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}
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sm.mu.Lock()
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sm.schema = &schema
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sm.currentVersion = schema.Version
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sm.mu.Unlock()
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if sm.logger != nil {
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sm.logger.Info(fmt.Sprintf("Loaded schema version %s with %d collections", schema.Version, len(schema.Collections)))
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}
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}
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// saveSchema сохраняет определение схемы атомарно (через временный файл + rename).
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//
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// ВАЖНО: метод НЕ берёт sm.mu, чтобы его можно было вызывать из функций,
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// уже удерживающих sm.mu.Lock(). Вызывающий сам отвечает за консистентность
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// читаемого состояния sm.schema.
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func (sm *SchemaMigrator) saveSchemaLocked() error {
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data, err := json.MarshalIndent(sm.schema, "", " ")
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if err != nil {
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return err
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}
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path := filepath.Join(sm.migrationDir, "schema.json")
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tmpPath := path + ".tmp"
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if err := os.WriteFile(tmpPath, data, 0644); err != nil {
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return err
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}
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return os.Rename(tmpPath, path)
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}
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// saveSchema — публичная обёртка, берущая RLock.
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func (sm *SchemaMigrator) saveSchema() error {
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sm.mu.RLock()
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defer sm.mu.RUnlock()
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return sm.saveSchemaLocked()
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}
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// createDefaultSchema создаёт схему по умолчанию
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func (sm *SchemaMigrator) createDefaultSchema() {
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sm.mu.Lock()
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defer sm.mu.Unlock()
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sm.schema = &SchemaDefinition{
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Version: "1.0.0",
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Collections: make(map[string]*CollectionSchema),
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UpdatedAt: time.Now().UnixMilli(),
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}
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sm.schema.Collections["_default"] = &CollectionSchema{
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Fields: map[string]*FieldDefinition{
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"_id": {
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Type: "string",
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Required: true,
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},
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"created_at": {
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Type: "int64",
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Default: int64(0),
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},
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"updated_at": {
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Type: "int64",
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Default: int64(0),
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},
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},
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Required: []string{"_id"},
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Indexes: []IndexDefinition{},
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UpdatedAt: time.Now().UnixMilli(),
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}
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sm.currentVersion = "1.0.0"
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_ = sm.saveSchemaLocked()
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}
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// registerBuiltinSchemaMigrations регистрирует встроенные миграции схемы
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func (sm *SchemaMigrator) registerBuiltinSchemaMigrations() {
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sm.RegisterSchemaMigration(&SchemaMigration{
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ID: "schema_001_add_timestamps",
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Version: "1.1.0",
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Description: "Add created_at and updated_at timestamps to all collections",
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Up: sm.migrateSchemaAddTimestamps,
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Down: sm.migrateSchemaRemoveTimestamps,
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CreatedAt: time.Now().UnixMilli(),
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})
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sm.RegisterSchemaMigration(&SchemaMigration{
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ID: "schema_002_add_soft_delete",
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Version: "1.2.0",
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Description: "Add soft delete support (deleted_at, deleted fields)",
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Up: sm.migrateSchemaAddSoftDelete,
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Down: sm.migrateSchemaRemoveSoftDelete,
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CreatedAt: time.Now().UnixMilli(),
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})
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sm.RegisterSchemaMigration(&SchemaMigration{
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ID: "schema_003_add_versioning",
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Version: "1.3.0",
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Description: "Add document versioning (_version field)",
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Up: sm.migrateSchemaAddVersioning,
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Down: sm.migrateSchemaRemoveVersioning,
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CreatedAt: time.Now().UnixMilli(),
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})
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sm.RegisterSchemaMigration(&SchemaMigration{
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ID: "schema_004_add_indexes",
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Version: "2.0.0",
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Description: "Add secondary indexes for performance",
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Up: sm.migrateSchemaAddIndexes,
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Down: sm.migrateSchemaRemoveIndexes,
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CreatedAt: time.Now().UnixMilli(),
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})
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sm.RegisterSchemaMigration(&SchemaMigration{
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ID: "schema_005_add_validation",
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Version: "2.1.0",
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Description: "Add field validation rules",
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Up: sm.migrateSchemaAddValidation,
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Down: sm.migrateSchemaRemoveValidation,
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CreatedAt: time.Now().UnixMilli(),
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})
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}
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// RegisterSchemaMigration регистрирует миграцию схемы
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func (sm *SchemaMigrator) RegisterSchemaMigration(m *SchemaMigration) {
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if m == nil || m.ID == "" {
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return
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}
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sm.mu.Lock()
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defer sm.mu.Unlock()
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sm.migrations[m.ID] = m
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}
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// loadAppliedMigrations загружает применённые миграции
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func (sm *SchemaMigrator) loadAppliedMigrations() {
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path := filepath.Join(sm.migrationDir, "schema_migrations.json")
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data, err := os.ReadFile(path)
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if err != nil {
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return
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}
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var records []SchemaMigrationRecord
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if err := json.Unmarshal(data, &records); err != nil {
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if sm.logger != nil {
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||
sm.logger.Error(fmt.Sprintf("Failed to unmarshal schema migrations: %v", err))
|
||
}
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||
return
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}
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sm.mu.Lock()
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defer sm.mu.Unlock()
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|
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for i := range records {
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sm.applied[records[i].ID] = &records[i]
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}
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}
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|
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// saveAppliedMigrationsLocked сохраняет применённые миграции.
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// Не берёт sm.mu (вызывающий уже держит Lock).
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func (sm *SchemaMigrator) saveAppliedMigrationsLocked() error {
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||
records := make([]SchemaMigrationRecord, 0, len(sm.applied))
|
||
for _, record := range sm.applied {
|
||
records = append(records, *record)
|
||
}
|
||
|
||
data, err := json.MarshalIndent(records, "", " ")
|
||
if err != nil {
|
||
return err
|
||
}
|
||
|
||
path := filepath.Join(sm.migrationDir, "schema_migrations.json")
|
||
tmpPath := path + ".tmp"
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||
if err := os.WriteFile(tmpPath, data, 0644); err != nil {
|
||
return err
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||
}
|
||
return os.Rename(tmpPath, path)
|
||
}
|
||
|
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// MigrateSchema выполняет миграцию схемы до указанной версии.
|
||
//
|
||
// ВАЖНО: этот метод НЕ удерживает sm.mu на всё время выполнения,
|
||
// чтобы избежать deadlock с saveSchema/saveAppliedMigrations и
|
||
// чтобы не блокировать чтение схемы на время долгих миграций.
|
||
// Лок берётся только для доступа к картам migrations/applied и к sm.schema.
|
||
func (sm *SchemaMigrator) MigrateSchema(targetVersion string) (err error) {
|
||
if targetVersion == "" {
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||
return fmt.Errorf("target version is empty")
|
||
}
|
||
|
||
if sm.logger != nil {
|
||
sm.logger.Info(fmt.Sprintf("Starting schema migration to version %s", targetVersion))
|
||
}
|
||
|
||
// Снимок текущего состояния под RLock
|
||
sm.mu.RLock()
|
||
currentVersion := sm.schema.Version
|
||
allMigrations := make([]*SchemaMigration, 0, len(sm.migrations))
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for _, m := range sm.migrations {
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allMigrations = append(allMigrations, m)
|
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}
|
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appliedCopy := make(map[string]bool, len(sm.applied))
|
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for id := range sm.applied {
|
||
appliedCopy[id] = true
|
||
}
|
||
sm.mu.RUnlock()
|
||
|
||
if currentVersion == targetVersion {
|
||
if sm.logger != nil {
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||
sm.logger.Info("Already at target version, no migration needed")
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// Сортируем по версии
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||
sort.Slice(allMigrations, func(i, j int) bool {
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return sm.isVersionLess(allMigrations[i].Version, allMigrations[j].Version)
|
||
})
|
||
|
||
// Отбираем миграции для применения
|
||
var toApply []*SchemaMigration
|
||
for _, m := range allMigrations {
|
||
if sm.isVersionGreater(m.Version, currentVersion) && !sm.isVersionGreater(m.Version, targetVersion) {
|
||
if !appliedCopy[m.ID] {
|
||
toApply = append(toApply, m)
|
||
}
|
||
}
|
||
}
|
||
|
||
if sm.logger != nil {
|
||
sm.logger.Info(fmt.Sprintf("Applying %d schema migrations", len(toApply)))
|
||
}
|
||
|
||
// Если targetVersion меньше currentVersion — это откат, который не поддерживается.
|
||
if len(toApply) == 0 && sm.isVersionGreater(currentVersion, targetVersion) {
|
||
return fmt.Errorf("downgrade from %s to %s is not supported", currentVersion, targetVersion)
|
||
}
|
||
|
||
// Копируем схему, чтобы изменения были атомарны: применяем к копии,
|
||
// а в sm.schema записываем только после успешного коммита.
|
||
sm.mu.RLock()
|
||
schemaCopy := sm.deepCopySchemaLocked()
|
||
sm.mu.RUnlock()
|
||
|
||
if schemaCopy == nil {
|
||
return fmt.Errorf("failed to copy schema")
|
||
}
|
||
|
||
// Начинаем транзакцию
|
||
tx := storage.BeginTransaction()
|
||
if tx == nil {
|
||
return fmt.Errorf("failed to begin transaction")
|
||
}
|
||
|
||
// Обработка паники с именованным возвратом err
|
||
defer func() {
|
||
if r := recover(); r != nil {
|
||
storage.AbortCurrentTransaction()
|
||
if sm.logger != nil {
|
||
sm.logger.Error(fmt.Sprintf("Panic during schema migration: %v", r))
|
||
}
|
||
err = fmt.Errorf("panic during schema migration: %v", r)
|
||
}
|
||
}()
|
||
|
||
// Новые applied-записи, которые закоммитим в sm.applied только при успехе
|
||
newApplied := make(map[string]*SchemaMigrationRecord)
|
||
|
||
for _, m := range toApply {
|
||
if sm.logger != nil {
|
||
sm.logger.Info(fmt.Sprintf("Applying schema migration: %s (%s)", m.ID, m.Description))
|
||
}
|
||
|
||
startTime := time.Now()
|
||
|
||
if m.Up == nil {
|
||
storage.AbortCurrentTransaction()
|
||
return fmt.Errorf("migration %s has nil Up function", m.ID)
|
||
}
|
||
|
||
if err := m.Up(tx, schemaCopy); err != nil {
|
||
storage.AbortCurrentTransaction()
|
||
return fmt.Errorf("schema migration %s failed: %v", m.ID, err)
|
||
}
|
||
|
||
schemaCopy.Version = m.Version
|
||
schemaCopy.UpdatedAt = time.Now().UnixMilli()
|
||
|
||
newApplied[m.ID] = &SchemaMigrationRecord{
|
||
ID: m.ID,
|
||
Version: m.Version,
|
||
Description: m.Description,
|
||
AppliedAt: time.Now().UnixMilli(),
|
||
Success: true,
|
||
}
|
||
|
||
if sm.logger != nil {
|
||
sm.logger.Info(fmt.Sprintf("Schema migration %s completed in %v", m.ID, time.Since(startTime)))
|
||
}
|
||
}
|
||
|
||
// Коммитим транзакцию ДО записи на диск
|
||
if err := storage.CommitCurrentTransaction(); err != nil {
|
||
return fmt.Errorf("failed to commit schema migration: %v", err)
|
||
}
|
||
|
||
// Только теперь применяем изменения в память
|
||
sm.mu.Lock()
|
||
sm.schema = schemaCopy
|
||
for id, rec := range newApplied {
|
||
sm.applied[id] = rec
|
||
}
|
||
sm.currentVersion = targetVersion
|
||
|
||
// Сохраняем на диск (под Lock, вызывая Locked-версии)
|
||
if err := sm.saveSchemaLocked(); err != nil {
|
||
sm.mu.Unlock()
|
||
return fmt.Errorf("failed to save schema: %v", err)
|
||
}
|
||
if err := sm.saveAppliedMigrationsLocked(); err != nil {
|
||
sm.mu.Unlock()
|
||
return fmt.Errorf("failed to save applied migrations: %v", err)
|
||
}
|
||
sm.mu.Unlock()
|
||
|
||
if sm.logger != nil {
|
||
sm.logger.Info(fmt.Sprintf("Schema migration to version %s completed successfully", targetVersion))
|
||
}
|
||
|
||
return nil
|
||
}
|
||
|
||
// deepCopySchemaLocked создаёт глубокую копию sm.schema через JSON.
|
||
// Вызывающий должен удерживать sm.mu (RLock).
|
||
func (sm *SchemaMigrator) deepCopySchemaLocked() *SchemaDefinition {
|
||
if sm.schema == nil {
|
||
return nil
|
||
}
|
||
data, err := json.Marshal(sm.schema)
|
||
if err != nil {
|
||
return nil
|
||
}
|
||
var copy SchemaDefinition
|
||
if err := json.Unmarshal(data, ©); err != nil {
|
||
return nil
|
||
}
|
||
if copy.Collections == nil {
|
||
copy.Collections = make(map[string]*CollectionSchema)
|
||
}
|
||
return ©
|
||
}
|
||
|
||
// MigrateDocument прозрачно мигрирует отдельный документ к актуальной схеме.
|
||
// Возвращает копию документа и флаг changed (были ли изменения).
|
||
func (sm *SchemaMigrator) MigrateDocument(doc *storage.Document, collectionName string) (*storage.Document, bool, error) {
|
||
if doc == nil {
|
||
return nil, false, fmt.Errorf("nil document")
|
||
}
|
||
|
||
sm.mu.RLock()
|
||
collSchema, exists := sm.schema.Collections[collectionName]
|
||
if !exists {
|
||
collSchema = sm.schema.Collections["_default"]
|
||
}
|
||
// Копируем схему, чтобы не держать RLock во время работы с документом
|
||
schemaCopy := copyCollectionSchema(collSchema)
|
||
sm.mu.RUnlock()
|
||
|
||
if schemaCopy == nil {
|
||
// Нет схемы — возвращаем документ без изменений
|
||
return doc.Clone(), false, nil
|
||
}
|
||
|
||
migratedDoc := doc.Clone()
|
||
changed := false
|
||
|
||
// Добавляем недостающие поля с значениями по умолчанию
|
||
for fieldName, fieldDef := range schemaCopy.Fields {
|
||
if _, err := migratedDoc.GetField(fieldName); err != nil {
|
||
if fieldDef.Default != nil {
|
||
migratedDoc.SetField(fieldName, fieldDef.Default)
|
||
changed = true
|
||
if sm.logger != nil {
|
||
sm.logger.Debug(fmt.Sprintf("Added default value for field %s in document %s", fieldName, doc.ID))
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
// Проверяем типы полей и преобразуем при необходимости
|
||
for fieldName, fieldDef := range schemaCopy.Fields {
|
||
if value, err := migratedDoc.GetField(fieldName); err == nil {
|
||
converted, needsConversion := sm.convertFieldType(value, fieldDef.Type)
|
||
if needsConversion {
|
||
migratedDoc.SetField(fieldName, converted)
|
||
changed = true
|
||
if sm.logger != nil {
|
||
sm.logger.Debug(fmt.Sprintf("Converted field %s type for document %s", fieldName, doc.ID))
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if changed {
|
||
migratedDoc.UpdatedAt = time.Now().UnixMilli()
|
||
migratedDoc.Version++
|
||
}
|
||
|
||
return migratedDoc, changed, nil
|
||
}
|
||
|
||
// copyCollectionSchema создаёт глубокую копию CollectionSchema через JSON.
|
||
func copyCollectionSchema(src *CollectionSchema) *CollectionSchema {
|
||
if src == nil {
|
||
return nil
|
||
}
|
||
data, err := json.Marshal(src)
|
||
if err != nil {
|
||
return nil
|
||
}
|
||
var copy CollectionSchema
|
||
if err := json.Unmarshal(data, ©); err != nil {
|
||
return nil
|
||
}
|
||
if copy.Fields == nil {
|
||
copy.Fields = make(map[string]*FieldDefinition)
|
||
}
|
||
return ©
|
||
}
|
||
|
||
// MigrateCollectionDocuments прозрачно мигрирует все документы коллекции
|
||
func (sm *SchemaMigrator) MigrateCollectionDocuments(collection *storage.Collection) error {
|
||
if collection == nil {
|
||
return fmt.Errorf("nil collection")
|
||
}
|
||
|
||
startTime := time.Now()
|
||
|
||
sm.migrationStats.mu.Lock()
|
||
sm.migrationStats.StartTime = startTime.UnixMilli()
|
||
sm.migrationStats.TotalDocuments = collection.Count()
|
||
sm.migrationStats.MigratedDocuments = 0
|
||
sm.migrationStats.FailedDocuments = 0
|
||
sm.migrationStats.SkippedDocuments = 0
|
||
sm.migrationStats.mu.Unlock()
|
||
|
||
if sm.logger != nil {
|
||
sm.logger.Info(fmt.Sprintf("Starting migration of collection %s with %d documents",
|
||
collection.Name(), collection.Count()))
|
||
}
|
||
|
||
docs := collection.GetAllDocuments()
|
||
|
||
for _, doc := range docs {
|
||
migratedDoc, changed, err := sm.MigrateDocument(doc, collection.Name())
|
||
if err != nil {
|
||
sm.migrationStats.mu.Lock()
|
||
sm.migrationStats.FailedDocuments++
|
||
sm.migrationStats.mu.Unlock()
|
||
if sm.logger != nil {
|
||
sm.logger.Error(fmt.Sprintf("Failed to migrate document %s: %v", doc.ID, err))
|
||
}
|
||
continue
|
||
}
|
||
|
||
if !changed {
|
||
sm.migrationStats.mu.Lock()
|
||
sm.migrationStats.SkippedDocuments++
|
||
sm.migrationStats.mu.Unlock()
|
||
continue
|
||
}
|
||
|
||
updates := migratedDoc.GetFields()
|
||
if err := collection.Update(doc.ID, updates); err != nil {
|
||
sm.migrationStats.mu.Lock()
|
||
sm.migrationStats.FailedDocuments++
|
||
sm.migrationStats.mu.Unlock()
|
||
if sm.logger != nil {
|
||
sm.logger.Error(fmt.Sprintf("Failed to update migrated document %s: %v", doc.ID, err))
|
||
}
|
||
continue
|
||
}
|
||
|
||
sm.migrationStats.mu.Lock()
|
||
sm.migrationStats.MigratedDocuments++
|
||
sm.migrationStats.mu.Unlock()
|
||
}
|
||
|
||
sm.migrationStats.mu.Lock()
|
||
sm.migrationStats.EndTime = time.Now().UnixMilli()
|
||
total := sm.migrationStats.TotalDocuments
|
||
migrated := sm.migrationStats.MigratedDocuments
|
||
failed := sm.migrationStats.FailedDocuments
|
||
skipped := sm.migrationStats.SkippedDocuments
|
||
sm.migrationStats.mu.Unlock()
|
||
|
||
if sm.logger != nil {
|
||
sm.logger.Info(fmt.Sprintf("Migration of collection %s completed in %v: %d migrated, %d failed, %d skipped (total %d)",
|
||
collection.Name(), time.Since(startTime), migrated, failed, skipped, total))
|
||
}
|
||
|
||
return nil
|
||
}
|
||
|
||
// convertFieldType преобразует значение поля к нужному типу
|
||
func (sm *SchemaMigrator) convertFieldType(value interface{}, targetType string) (interface{}, bool) {
|
||
switch targetType {
|
||
case "string":
|
||
if _, ok := value.(string); !ok {
|
||
return fmt.Sprintf("%v", value), true
|
||
}
|
||
case "int64":
|
||
switch v := value.(type) {
|
||
case int:
|
||
return int64(v), true
|
||
case int32:
|
||
return int64(v), true
|
||
case int64:
|
||
// уже нужный тип
|
||
case float64:
|
||
return int64(v), true
|
||
case string:
|
||
var i int64
|
||
if _, err := fmt.Sscanf(v, "%d", &i); err == nil {
|
||
return i, true
|
||
}
|
||
}
|
||
case "float64":
|
||
switch v := value.(type) {
|
||
case int:
|
||
return float64(v), true
|
||
case int32:
|
||
return float64(v), true
|
||
case int64:
|
||
return float64(v), true
|
||
case float32:
|
||
return float64(v), true
|
||
case float64:
|
||
// уже нужный тип
|
||
case string:
|
||
var f float64
|
||
if _, err := fmt.Sscanf(v, "%f", &f); err == nil {
|
||
return f, true
|
||
}
|
||
}
|
||
case "bool":
|
||
if _, ok := value.(bool); !ok {
|
||
if str, ok := value.(string); ok {
|
||
return strings.ToLower(str) == "true" || str == "1", true
|
||
}
|
||
return false, true
|
||
}
|
||
}
|
||
return value, false
|
||
}
|
||
|
||
// getSortedSchemaMigrations возвращает отсортированный список миграций.
|
||
// НЕ берёт sm.mu — вызывающий должен обеспечить консистентность
|
||
// (например, вызвать под sm.mu.RLock или использовать снимок).
|
||
func (sm *SchemaMigrator) getSortedSchemaMigrations() []*SchemaMigration {
|
||
migrations := make([]*SchemaMigration, 0, len(sm.migrations))
|
||
for _, m := range sm.migrations {
|
||
migrations = append(migrations, m)
|
||
}
|
||
|
||
sort.Slice(migrations, func(i, j int) bool {
|
||
return sm.isVersionLess(migrations[i].Version, migrations[j].Version)
|
||
})
|
||
|
||
return migrations
|
||
}
|
||
|
||
// isVersionLess сравнивает версии
|
||
func (sm *SchemaMigrator) isVersionLess(v1, v2 string) bool {
|
||
return compareVersions(v1, v2) < 0
|
||
}
|
||
|
||
// isVersionGreater сравнивает версии
|
||
func (sm *SchemaMigrator) isVersionGreater(v1, v2 string) bool {
|
||
return compareVersions(v1, v2) > 0
|
||
}
|
||
|
||
// versionToInt преобразует версию в число (для совместимости).
|
||
// ВНИМАНИЕ: могут быть коллизии (1.2.1000 == 1.3.0). Для сравнения
|
||
// используется compareVersions.
|
||
func (sm *SchemaMigrator) versionToInt(version string) int64 {
|
||
major, minor, patch := parseVersion(version)
|
||
return int64(major)*1_000_000_000 + int64(minor)*1_000_000 + int64(patch)
|
||
}
|
||
|
||
// parseVersion разбирает строку версии вида "X.Y.Z" (или "X.Y", или "X").
|
||
// Отсутствующие компоненты считаются нулями. Невалидные компоненты — 0.
|
||
func parseVersion(version string) (int, int, int) {
|
||
parts := strings.Split(version, ".")
|
||
var major, minor, patch int
|
||
if len(parts) > 0 {
|
||
fmt.Sscanf(parts[0], "%d", &major)
|
||
}
|
||
if len(parts) > 1 {
|
||
fmt.Sscanf(parts[1], "%d", &minor)
|
||
}
|
||
if len(parts) > 2 {
|
||
fmt.Sscanf(parts[2], "%d", &patch)
|
||
}
|
||
return major, minor, patch
|
||
}
|
||
|
||
// compareVersions сравнивает две версии покомпонентно.
|
||
// Возвращает -1, 0, 1. Отсутствующие компоненты считаются нулями,
|
||
// что устраняет проблему "1.2" vs "1.2.0" (они равны).
|
||
func compareVersions(v1, v2 string) int {
|
||
major1, minor1, patch1 := parseVersion(v1)
|
||
major2, minor2, patch2 := parseVersion(v2)
|
||
|
||
if major1 != major2 {
|
||
if major1 < major2 {
|
||
return -1
|
||
}
|
||
return 1
|
||
}
|
||
if minor1 != minor2 {
|
||
if minor1 < minor2 {
|
||
return -1
|
||
}
|
||
return 1
|
||
}
|
||
if patch1 != patch2 {
|
||
if patch1 < patch2 {
|
||
return -1
|
||
}
|
||
return 1
|
||
}
|
||
return 0
|
||
}
|
||
|
||
// ========== Конкретные реализации миграций схемы ==========
|
||
|
||
// migrateSchemaAddTimestamps добавляет поля created_at и updated_at
|
||
func (sm *SchemaMigrator) migrateSchemaAddTimestamps(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for _, collSchema := range schema.Collections {
|
||
if collSchema.Fields == nil {
|
||
collSchema.Fields = make(map[string]*FieldDefinition)
|
||
}
|
||
if _, exists := collSchema.Fields["created_at"]; !exists {
|
||
collSchema.Fields["created_at"] = &FieldDefinition{
|
||
Type: "int64",
|
||
Required: false,
|
||
Default: int64(0),
|
||
}
|
||
}
|
||
if _, exists := collSchema.Fields["updated_at"]; !exists {
|
||
collSchema.Fields["updated_at"] = &FieldDefinition{
|
||
Type: "int64",
|
||
Required: false,
|
||
Default: int64(0),
|
||
}
|
||
}
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// migrateSchemaRemoveTimestamps удаляет поля created_at и updated_at
|
||
func (sm *SchemaMigrator) migrateSchemaRemoveTimestamps(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for _, collSchema := range schema.Collections {
|
||
delete(collSchema.Fields, "created_at")
|
||
delete(collSchema.Fields, "updated_at")
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// migrateSchemaAddSoftDelete добавляет поддержку мягкого удаления
|
||
func (sm *SchemaMigrator) migrateSchemaAddSoftDelete(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for _, collSchema := range schema.Collections {
|
||
if collSchema.Fields == nil {
|
||
collSchema.Fields = make(map[string]*FieldDefinition)
|
||
}
|
||
if _, exists := collSchema.Fields["deleted_at"]; !exists {
|
||
collSchema.Fields["deleted_at"] = &FieldDefinition{
|
||
Type: "int64",
|
||
Required: false,
|
||
Default: int64(0),
|
||
}
|
||
}
|
||
if _, exists := collSchema.Fields["deleted"]; !exists {
|
||
collSchema.Fields["deleted"] = &FieldDefinition{
|
||
Type: "bool",
|
||
Required: false,
|
||
Default: false,
|
||
}
|
||
}
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// migrateSchemaRemoveSoftDelete удаляет поддержку мягкого удаления
|
||
func (sm *SchemaMigrator) migrateSchemaRemoveSoftDelete(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for _, collSchema := range schema.Collections {
|
||
delete(collSchema.Fields, "deleted_at")
|
||
delete(collSchema.Fields, "deleted")
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// migrateSchemaAddVersioning добавляет версионирование
|
||
func (sm *SchemaMigrator) migrateSchemaAddVersioning(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for _, collSchema := range schema.Collections {
|
||
if collSchema.Fields == nil {
|
||
collSchema.Fields = make(map[string]*FieldDefinition)
|
||
}
|
||
if _, exists := collSchema.Fields["_version"]; !exists {
|
||
collSchema.Fields["_version"] = &FieldDefinition{
|
||
Type: "int64",
|
||
Required: false,
|
||
Default: int64(1),
|
||
}
|
||
}
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// migrateSchemaRemoveVersioning удаляет версионирование
|
||
func (sm *SchemaMigrator) migrateSchemaRemoveVersioning(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for _, collSchema := range schema.Collections {
|
||
delete(collSchema.Fields, "_version")
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// migrateSchemaAddIndexes добавляет индексы
|
||
func (sm *SchemaMigrator) migrateSchemaAddIndexes(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for collectionName, collSchema := range schema.Collections {
|
||
defaultIndexes := []IndexDefinition{
|
||
{Name: "idx_created_at", Fields: []string{"created_at"}, Unique: false},
|
||
{Name: "idx_updated_at", Fields: []string{"updated_at"}, Unique: false},
|
||
}
|
||
|
||
for _, idx := range defaultIndexes {
|
||
found := false
|
||
for _, existing := range collSchema.Indexes {
|
||
if existing.Name == idx.Name {
|
||
found = true
|
||
break
|
||
}
|
||
}
|
||
if !found {
|
||
collSchema.Indexes = append(collSchema.Indexes, idx)
|
||
}
|
||
}
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
|
||
if sm.logger != nil {
|
||
sm.logger.Debug(fmt.Sprintf("Added indexes to collection %s", collectionName))
|
||
}
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// migrateSchemaRemoveIndexes удаляет индексы
|
||
func (sm *SchemaMigrator) migrateSchemaRemoveIndexes(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for _, collSchema := range schema.Collections {
|
||
newIndexes := make([]IndexDefinition, 0)
|
||
for _, idx := range collSchema.Indexes {
|
||
if !strings.HasPrefix(idx.Name, "idx_") {
|
||
newIndexes = append(newIndexes, idx)
|
||
}
|
||
}
|
||
collSchema.Indexes = newIndexes
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// migrateSchemaAddValidation добавляет валидацию полей
|
||
func (sm *SchemaMigrator) migrateSchemaAddValidation(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for _, collSchema := range schema.Collections {
|
||
if fieldDef, ok := collSchema.Fields["_id"]; ok && fieldDef != nil {
|
||
fieldDef.Required = true
|
||
}
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// migrateSchemaRemoveValidation удаляет валидацию
|
||
func (sm *SchemaMigrator) migrateSchemaRemoveValidation(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
for _, collSchema := range schema.Collections {
|
||
for _, fieldDef := range collSchema.Fields {
|
||
if fieldDef == nil {
|
||
continue
|
||
}
|
||
fieldDef.Required = false
|
||
fieldDef.Validate = ""
|
||
fieldDef.ValidateValue = nil
|
||
}
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// ========== Публичные методы для управления схемой ==========
|
||
|
||
// AddCollectionSchema добавляет схему для новой коллекции.
|
||
//
|
||
// Изменение сохраняется в отдельной копии, чтобы избежать deadlock
|
||
// с saveSchemaLocked (вызывается под Lock).
|
||
func (sm *SchemaMigrator) AddCollectionSchema(collectionName string, schema *CollectionSchema) error {
|
||
if collectionName == "" {
|
||
return fmt.Errorf("empty collection name")
|
||
}
|
||
if schema == nil {
|
||
return fmt.Errorf("nil schema")
|
||
}
|
||
if schema.Fields == nil {
|
||
schema.Fields = make(map[string]*FieldDefinition)
|
||
}
|
||
if schema.Indexes == nil {
|
||
schema.Indexes = make([]IndexDefinition, 0)
|
||
}
|
||
|
||
sm.mu.Lock()
|
||
defer sm.mu.Unlock()
|
||
|
||
if sm.schema.Collections == nil {
|
||
sm.schema.Collections = make(map[string]*CollectionSchema)
|
||
}
|
||
sm.schema.Collections[collectionName] = schema
|
||
sm.schema.UpdatedAt = time.Now().UnixMilli()
|
||
|
||
return sm.saveSchemaLocked()
|
||
}
|
||
|
||
// GetCollectionSchema возвращает схему коллекции
|
||
func (sm *SchemaMigrator) GetCollectionSchema(collectionName string) *CollectionSchema {
|
||
sm.mu.RLock()
|
||
defer sm.mu.RUnlock()
|
||
|
||
if schema, exists := sm.schema.Collections[collectionName]; exists {
|
||
return schema
|
||
}
|
||
return sm.schema.Collections["_default"]
|
||
}
|
||
|
||
// UpdateFieldSchema обновляет схему поля
|
||
func (sm *SchemaMigrator) UpdateFieldSchema(collectionName, fieldName string, fieldDef *FieldDefinition) error {
|
||
if collectionName == "" || fieldName == "" || fieldDef == nil {
|
||
return fmt.Errorf("invalid arguments")
|
||
}
|
||
|
||
sm.mu.Lock()
|
||
defer sm.mu.Unlock()
|
||
|
||
collSchema, exists := sm.schema.Collections[collectionName]
|
||
if !exists {
|
||
collSchema = &CollectionSchema{
|
||
Fields: make(map[string]*FieldDefinition),
|
||
Required: make([]string, 0),
|
||
Indexes: make([]IndexDefinition, 0),
|
||
UpdatedAt: time.Now().UnixMilli(),
|
||
}
|
||
sm.schema.Collections[collectionName] = collSchema
|
||
}
|
||
if collSchema.Fields == nil {
|
||
collSchema.Fields = make(map[string]*FieldDefinition)
|
||
}
|
||
|
||
collSchema.Fields[fieldName] = fieldDef
|
||
collSchema.UpdatedAt = time.Now().UnixMilli()
|
||
sm.schema.UpdatedAt = time.Now().UnixMilli()
|
||
|
||
return sm.saveSchemaLocked()
|
||
}
|
||
|
||
// GetSchema возвращает текущую схему (копию)
|
||
func (sm *SchemaMigrator) GetSchema() *SchemaDefinition {
|
||
sm.mu.RLock()
|
||
defer sm.mu.RUnlock()
|
||
|
||
if sm.schema == nil {
|
||
return &SchemaDefinition{
|
||
Version: "1.0.0",
|
||
Collections: make(map[string]*CollectionSchema),
|
||
}
|
||
}
|
||
|
||
copySchema := sm.deepCopySchemaLocked()
|
||
if copySchema == nil {
|
||
return &SchemaDefinition{
|
||
Version: sm.schema.Version,
|
||
Collections: make(map[string]*CollectionSchema),
|
||
}
|
||
}
|
||
return copySchema
|
||
}
|
||
|
||
// GetSchemaVersion возвращает текущую версию схемы
|
||
func (sm *SchemaMigrator) GetSchemaVersion() string {
|
||
sm.mu.RLock()
|
||
defer sm.mu.RUnlock()
|
||
if sm.schema == nil {
|
||
return "1.0.0"
|
||
}
|
||
return sm.schema.Version
|
||
}
|
||
|
||
// GetMigrationStats возвращает статистику миграции
|
||
func (sm *SchemaMigrator) GetMigrationStats() *MigrationStats {
|
||
sm.migrationStats.mu.RLock()
|
||
defer sm.migrationStats.mu.RUnlock()
|
||
|
||
stats := &MigrationStats{
|
||
TotalDocuments: sm.migrationStats.TotalDocuments,
|
||
MigratedDocuments: sm.migrationStats.MigratedDocuments,
|
||
FailedDocuments: sm.migrationStats.FailedDocuments,
|
||
SkippedDocuments: sm.migrationStats.SkippedDocuments,
|
||
StartTime: sm.migrationStats.StartTime,
|
||
EndTime: sm.migrationStats.EndTime,
|
||
}
|
||
return stats
|
||
}
|
||
|
||
// SetMigrationStrategy устанавливает стратегию миграции
|
||
func (sm *SchemaMigrator) SetMigrationStrategy(strategy DocumentMigrationStrategy) {
|
||
sm.mu.Lock()
|
||
defer sm.mu.Unlock()
|
||
sm.strategy = strategy
|
||
|
||
if sm.logger != nil {
|
||
strategyName := "InPlace"
|
||
if strategy == StrategyCopyNew {
|
||
strategyName = "CopyNew"
|
||
} else if strategy == StrategyLazy {
|
||
strategyName = "Lazy"
|
||
}
|
||
sm.logger.Info(fmt.Sprintf("Migration strategy set to %s", strategyName))
|
||
}
|
||
}
|
||
|
||
// ValidateDocumentAgainstSchema проверяет документ на соответствие схеме
|
||
func (sm *SchemaMigrator) ValidateDocumentAgainstSchema(doc *storage.Document, collectionName string) error {
|
||
if doc == nil {
|
||
return fmt.Errorf("nil document")
|
||
}
|
||
|
||
sm.mu.RLock()
|
||
collSchema, exists := sm.schema.Collections[collectionName]
|
||
if !exists {
|
||
collSchema = sm.schema.Collections["_default"]
|
||
}
|
||
schemaCopy := copyCollectionSchema(collSchema)
|
||
sm.mu.RUnlock()
|
||
|
||
if schemaCopy == nil {
|
||
return nil
|
||
}
|
||
|
||
for _, requiredField := range schemaCopy.Required {
|
||
if _, err := doc.GetField(requiredField); err != nil {
|
||
return fmt.Errorf("required field '%s' is missing", requiredField)
|
||
}
|
||
}
|
||
|
||
for fieldName, fieldDef := range schemaCopy.Fields {
|
||
if fieldDef == nil {
|
||
continue
|
||
}
|
||
if value, err := doc.GetField(fieldName); err == nil {
|
||
if err := sm.validateFieldType(value, fieldDef.Type); err != nil {
|
||
return fmt.Errorf("field '%s' validation failed: %v", fieldName, err)
|
||
}
|
||
if fieldDef.Validate != "" {
|
||
if err := sm.validateFieldValue(value, fieldDef); err != nil {
|
||
return fmt.Errorf("field '%s' value validation failed: %v", fieldName, err)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return nil
|
||
}
|
||
|
||
// validateFieldType проверяет тип поля
|
||
func (sm *SchemaMigrator) validateFieldType(value interface{}, expectedType string) error {
|
||
switch expectedType {
|
||
case "string":
|
||
if _, ok := value.(string); !ok {
|
||
return fmt.Errorf("expected string, got %T", value)
|
||
}
|
||
case "int64":
|
||
switch value.(type) {
|
||
case int, int32, int64, float64:
|
||
// допустимые типы
|
||
default:
|
||
return fmt.Errorf("expected int64, got %T", value)
|
||
}
|
||
case "float64":
|
||
switch value.(type) {
|
||
case float64, float32, int, int32, int64:
|
||
// допустимые типы
|
||
default:
|
||
return fmt.Errorf("expected float64, got %T", value)
|
||
}
|
||
case "bool":
|
||
if _, ok := value.(bool); !ok {
|
||
return fmt.Errorf("expected bool, got %T", value)
|
||
}
|
||
case "array", "object":
|
||
// без строгой проверки
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// validateFieldValue проверяет значение поля по правилам валидации
|
||
func (sm *SchemaMigrator) validateFieldValue(value interface{}, fieldDef *FieldDefinition) error {
|
||
switch fieldDef.Validate {
|
||
case "min":
|
||
if min, ok := toFloat64(fieldDef.ValidateValue); ok {
|
||
if v, ok := toFloat64(value); ok && v < min {
|
||
return fmt.Errorf("value %.2f is less than minimum %.2f", v, min)
|
||
}
|
||
}
|
||
case "max":
|
||
if max, ok := toFloat64(fieldDef.ValidateValue); ok {
|
||
if v, ok := toFloat64(value); ok && v > max {
|
||
return fmt.Errorf("value %.2f exceeds maximum %.2f", v, max)
|
||
}
|
||
}
|
||
case "enum":
|
||
if enumVals, ok := fieldDef.ValidateValue.([]interface{}); ok {
|
||
found := false
|
||
for _, ev := range enumVals {
|
||
if fmt.Sprintf("%v", value) == fmt.Sprintf("%v", ev) {
|
||
found = true
|
||
break
|
||
}
|
||
}
|
||
if !found {
|
||
return fmt.Errorf("value %v not in enum list", value)
|
||
}
|
||
}
|
||
case "regex":
|
||
if pattern, ok := fieldDef.ValidateValue.(string); ok {
|
||
if str, ok := value.(string); ok {
|
||
if !strings.Contains(str, pattern) {
|
||
return fmt.Errorf("value '%s' does not match pattern '%s'", str, pattern)
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// toFloat64 пытается привести значение к float64.
|
||
func toFloat64(v interface{}) (float64, bool) {
|
||
switch x := v.(type) {
|
||
case float64:
|
||
return x, true
|
||
case float32:
|
||
return float64(x), true
|
||
case int:
|
||
return float64(x), true
|
||
case int32:
|
||
return float64(x), true
|
||
case int64:
|
||
return float64(x), true
|
||
}
|
||
return 0, false
|
||
}
|
||
|
||
// GetSchemaStatus возвращает статус схемы
|
||
func (sm *SchemaMigrator) GetSchemaStatus() *SchemaStatus {
|
||
sm.mu.RLock()
|
||
defer sm.mu.RUnlock()
|
||
|
||
status := &SchemaStatus{
|
||
CurrentVersion: sm.schema.Version,
|
||
TotalCollections: len(sm.schema.Collections),
|
||
TotalMigrations: len(sm.migrations),
|
||
AppliedMigrations: len(sm.applied),
|
||
PendingMigrations: len(sm.migrations) - len(sm.applied),
|
||
UpdatedAt: sm.schema.UpdatedAt,
|
||
Collections: make([]CollectionSchemaInfo, 0, len(sm.schema.Collections)),
|
||
}
|
||
|
||
for name, collSchema := range sm.schema.Collections {
|
||
status.Collections = append(status.Collections, CollectionSchemaInfo{
|
||
Name: name,
|
||
FieldsCount: len(collSchema.Fields),
|
||
IndexesCount: len(collSchema.Indexes),
|
||
UpdatedAt: collSchema.UpdatedAt,
|
||
})
|
||
}
|
||
|
||
return status
|
||
}
|
||
|
||
// SchemaStatus статус схемы
|
||
type SchemaStatus struct {
|
||
CurrentVersion string `json:"current_version"`
|
||
TotalCollections int `json:"total_collections"`
|
||
TotalMigrations int `json:"total_migrations"`
|
||
AppliedMigrations int `json:"applied_migrations"`
|
||
PendingMigrations int `json:"pending_migrations"`
|
||
UpdatedAt int64 `json:"updated_at"`
|
||
Collections []CollectionSchemaInfo `json:"collections"`
|
||
}
|
||
|
||
// CollectionSchemaInfo информация о схеме коллекции
|
||
type CollectionSchemaInfo struct {
|
||
Name string `json:"name"`
|
||
FieldsCount int `json:"fields_count"`
|
||
IndexesCount int `json:"indexes_count"`
|
||
UpdatedAt int64 `json:"updated_at"`
|
||
}
|
||
|
||
// MigrationStatusItem элемент статуса миграции (совместимость со старым кодом)
|
||
type MigrationStatusItem struct {
|
||
ID string `json:"id"`
|
||
Version string `json:"version"`
|
||
Description string `json:"description"`
|
||
Applied bool `json:"applied"`
|
||
AppliedAt int64 `json:"applied_at,omitempty"`
|
||
CreatedAt int64 `json:"created_at"`
|
||
Success bool `json:"success"`
|
||
}
|
||
|
||
// MigrationStatus статус миграций (совместимость со старым кодом)
|
||
type MigrationStatus struct {
|
||
CurrentVersion string `json:"current_version"`
|
||
TotalMigrations int `json:"total_migrations"`
|
||
AppliedMigrations int `json:"applied_migrations"`
|
||
PendingMigrations int `json:"pending_migrations"`
|
||
Migrations []MigrationStatusItem `json:"migrations"`
|
||
}
|
||
|
||
// GetStatus возвращает статус миграций (для совместимости со старым кодом)
|
||
func (sm *SchemaMigrator) GetStatus() *MigrationStatus {
|
||
sm.mu.RLock()
|
||
defer sm.mu.RUnlock()
|
||
|
||
status := &MigrationStatus{
|
||
CurrentVersion: sm.schema.Version,
|
||
TotalMigrations: len(sm.migrations),
|
||
AppliedMigrations: len(sm.applied),
|
||
PendingMigrations: len(sm.migrations) - len(sm.applied),
|
||
Migrations: make([]MigrationStatusItem, 0),
|
||
}
|
||
|
||
for _, m := range sm.getSortedSchemaMigrations() {
|
||
item := MigrationStatusItem{
|
||
ID: m.ID,
|
||
Version: m.Version,
|
||
Description: m.Description,
|
||
CreatedAt: m.CreatedAt,
|
||
}
|
||
|
||
if record, ok := sm.applied[m.ID]; ok {
|
||
item.Applied = true
|
||
item.AppliedAt = record.AppliedAt
|
||
item.Success = record.Success
|
||
}
|
||
|
||
status.Migrations = append(status.Migrations, item)
|
||
}
|
||
|
||
return status
|
||
}
|
||
|
||
// ========== Совместимость со старым кодом ==========
|
||
|
||
// Migration (старая структура для совместимости)
|
||
type Migration struct {
|
||
ID string
|
||
Version string
|
||
Description string
|
||
Up func(tx *storage.Transaction) error
|
||
Down func(tx *storage.Transaction) error
|
||
CreatedAt int64
|
||
AppliedAt int64
|
||
}
|
||
|
||
// MigrationRecord (старая структура для совместимости)
|
||
type MigrationRecord struct {
|
||
ID string `json:"id"`
|
||
Version string `json:"version"`
|
||
Description string `json:"description"`
|
||
AppliedAt int64 `json:"applied_at"`
|
||
Success bool `json:"success"`
|
||
Error string `json:"error,omitempty"`
|
||
}
|
||
|
||
// RegisterMigration регистрирует миграцию (старый интерфейс).
|
||
// Безопасно обрабатывает nil Up/Down.
|
||
func (sm *SchemaMigrator) RegisterMigration(m *Migration) {
|
||
if m == nil {
|
||
return
|
||
}
|
||
schemaMig := &SchemaMigration{
|
||
ID: m.ID,
|
||
Version: m.Version,
|
||
Description: m.Description,
|
||
CreatedAt: m.CreatedAt,
|
||
}
|
||
if m.Up != nil {
|
||
up := m.Up
|
||
schemaMig.Up = func(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
return up(tx)
|
||
}
|
||
}
|
||
if m.Down != nil {
|
||
down := m.Down
|
||
schemaMig.Down = func(tx *storage.Transaction, schema *SchemaDefinition) error {
|
||
return down(tx)
|
||
}
|
||
}
|
||
sm.RegisterSchemaMigration(schemaMig)
|
||
}
|
||
|
||
// Migrate выполняет миграцию (старый интерфейс)
|
||
func (sm *SchemaMigrator) Migrate(targetVersion string) error {
|
||
return sm.MigrateSchema(targetVersion)
|
||
} |