115 lines
3.1 KiB
Go
115 lines
3.1 KiB
Go
package sync
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import (
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"context"
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"fmt"
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"strings"
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"gitea.redpowerfuture.com/red-future/common/db/gfdb"
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"github.com/sirupsen/logrus"
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)
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// ColumnDef 列定义
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type ColumnDef struct {
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Name string `json:"name"`
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Type string `json:"type"`
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Comment string `json:"comment,omitempty"`
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}
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// TableDefinition 表结构定义
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type TableDefinition struct {
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TableName string `json:"table_name"`
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Columns []ColumnDef `json:"columns"`
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ConflictKeys []string `json:"conflict_keys,omitempty"`
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}
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// ParseTableDefinition 解析 table_definition JSON
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func ParseTableDefinition(raw map[string]interface{}) (*TableDefinition, error) {
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td := &TableDefinition{}
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name, _ := raw["table_name"].(string)
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if name == "" {
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return nil, fmt.Errorf("table_definition 缺少 table_name")
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}
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td.TableName = name
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colsRaw, _ := raw["columns"].([]interface{})
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for _, c := range colsRaw {
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cm, _ := c.(map[string]interface{})
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if cm == nil {
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continue
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}
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n, _ := cm["name"].(string)
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t, _ := cm["type"].(string)
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comment, _ := cm["comment"].(string)
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if n == "" || t == "" {
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continue
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}
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td.Columns = append(td.Columns, ColumnDef{Name: n, Type: t, Comment: comment})
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}
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if keys, _ := raw["conflict_keys"].([]interface{}); keys != nil {
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for _, k := range keys {
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if s, ok := k.(string); ok {
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td.ConflictKeys = append(td.ConflictKeys, s)
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}
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}
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}
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if len(td.Columns) == 0 {
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return nil, fmt.Errorf("table_definition 列定义为空")
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}
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return td, nil
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}
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// EnsureTable 确保表存在
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func EnsureTable(ctx context.Context, td *TableDefinition) error {
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sql := buildCreateSQL(td)
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logrus.Infof("建表: %s", td.TableName)
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_, err := gfdb.DB(ctx).Exec(ctx, sql)
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if err != nil {
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return fmt.Errorf("建表失败 [%s]: %w", td.TableName, err)
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}
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logrus.Infof("表 %s 已就绪", td.TableName)
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return nil
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}
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func buildCreateSQL(td *TableDefinition) string {
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cols := []string{
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"id BIGSERIAL PRIMARY KEY",
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"tenant_id BIGINT NOT NULL DEFAULT 0",
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"creator VARCHAR(64) DEFAULT ''",
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"created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()",
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"updater VARCHAR(64) DEFAULT ''",
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"updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()",
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"deleted_at TIMESTAMP WITH TIME ZONE",
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}
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for _, c := range td.Columns {
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cols = append(cols, fmt.Sprintf("%s %s", c.Name, c.Type))
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}
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cols = append(cols, "raw_data JSONB DEFAULT '{}'")
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// 添加复合唯一索引（用于 ON CONFLICT upsert）
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var constraints []string
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if len(td.ConflictKeys) > 0 {
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ck := strings.Join(td.ConflictKeys, ", ")
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indexName := fmt.Sprintf("uq_%s_conflict", td.TableName)
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constraints = append(constraints,
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fmt.Sprintf("CREATE UNIQUE INDEX IF NOT EXISTS %s ON %s (%s)", indexName, td.TableName, ck))
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}
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sql := fmt.Sprintf("CREATE TABLE IF NOT EXISTS %s (\n %s\n);\n", td.TableName, strings.Join(cols, ",\n "))
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// 添加唯一索引
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if len(constraints) > 0 {
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sql += strings.Join(constraints, ";\n") + ";\n"
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}
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// 添加字段注释（COMMENT ON COLUMN）
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for _, c := range td.Columns {
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if c.Comment != "" {
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escaped := strings.ReplaceAll(c.Comment, "'", "''")
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sql += fmt.Sprintf("COMMENT ON COLUMN %s.%s IS '%s';\n", td.TableName, c.Name, escaped)
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}
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}
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return sql
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}
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