20260507213409

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oneao committed 2026-05-07 21:34:09 +08:00
1 parent 3070eac71b
commit 4c7f516a03
204 files changed
+3623

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+50
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package db
import (
"context"
"github.com/jackc/pgx/v5"
"github.com/jackc/pgx/v5/pgconn"
"github.com/jackc/pgx/v5/pgxpool"
)
var defaultClient *Client
type Client struct {
pool *pgxpool.Pool
tx pgx.Tx
}
// Init 初始化(只调用一次)
func Init(pool *pgxpool.Pool) {
defaultClient = &Client{pool: pool}
}
// New 获取全局 client
func New() *Client {
if defaultClient == nil {
panic("db not initialized, call db.Init(pool) first")
}
return defaultClient
}
func (c *Client) Exec(ctx context.Context, sql string, args ...any) (pgconn.CommandTag, error) {
if c.tx != nil {
return c.tx.Exec(ctx, sql, args...)
}
return c.pool.Exec(ctx, sql, args...)
}
func (c *Client) Query(ctx context.Context, sql string, args ...any) (pgx.Rows, error) {
if c.tx != nil {
return c.tx.Query(ctx, sql, args...)
}
return c.pool.Query(ctx, sql, args...)
}
func (c *Client) QueryRow(ctx context.Context, sql string, args ...any) pgx.Row {
if c.tx != nil {
return c.tx.QueryRow(ctx, sql, args...)
}
return c.pool.QueryRow(ctx, sql, args...)
}
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package db
import (
"context"
"fmt"
"strings"
)
func (c *Client) Delete(ctx context.Context, table, keyField string, data map[string]any) error {
keyVal, err := validateData(table, keyField, data)
if err != nil {
return err
}
sql := fmt.Sprintf(
"DELETE FROM %s WHERE %s = $1",
quoteTable(table),
quoteCol(keyField),
)
_, err = c.pool.Exec(ctx, sql, keyVal) // ⭐修复 exec
return err
}
func (c *Client) BatchDelete(ctx context.Context, table, keyField string, list []map[string]any) error {
if len(list) == 0 {
return fmt.Errorf("empty data")
}
var (
args []any
in []string
i = 1
)
for _, row := range list {
v, err := validateData(table, keyField, row)
if err != nil {
return err
}
in = append(in, fmt.Sprintf("$%d", i))
args = append(args, v)
i++
}
sql := fmt.Sprintf(
"DELETE FROM %s WHERE %s IN (%s)",
quoteTable(table),
quoteCol(keyField),
strings.Join(in, ", "),
)
_, err := c.pool.Exec(ctx, sql, args...) // ⭐修复 exec
return err
}
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package db
import (
"context"
"fmt"
"sort"
"strings"
)
func buildInsertSQL(table string, data map[string]any) (string, []any) {
var (
cols []string
vals []string
args []any
i = 1
)
for k, v := range data {
cols = append(cols, quoteCol(k))
vals = append(vals, fmt.Sprintf("$%d", i))
args = append(args, v)
i++
}
return fmt.Sprintf(
"INSERT INTO %s (%s) VALUES (%s)",
quoteTable(table),
strings.Join(cols, ", "),
strings.Join(vals, ", "),
), args
}
func (c *Client) Insert(ctx context.Context, table, keyField string, data map[string]any) error {
if _, err := validateInsertData(table, keyField, data); err != nil {
return err
}
ensureID(data, keyField)
data = applyMetaFields(ctx, table, data, true)
sql, args := buildInsertSQL(table, data)
_, err := c.pool.Exec(ctx, sql, args...)
return err
}
func (c *Client) BatchInsert(ctx context.Context, table, keyField string, list []map[string]any) error {
if len(list) == 0 {
return fmt.Errorf("empty data")
}
first := list[0]
if _, err := validateInsertData(table, keyField, first); err != nil {
return err
}
tableSQL := quoteTable(table)
// 固定字段顺序(稳定性关键)
var cols []string
for k := range first {
cols = append(cols, k)
}
sort.Strings(cols)
var (
args []any
values []string
argIndex = 1
)
for _, row := range list {
ensureID(row, keyField)
row = applyMetaFields(ctx, table, row, true)
var place []string
for _, col := range cols {
v, ok := row[col]
if !ok {
return fmt.Errorf("missing field: %s", col)
}
place = append(place, fmt.Sprintf("$%d", argIndex))
args = append(args, v)
argIndex++
}
values = append(values, fmt.Sprintf("(%s)", strings.Join(place, ",")))
}
var quotedCols []string
for _, col := range cols {
quotedCols = append(quotedCols, quoteCol(col))
}
sql := fmt.Sprintf(
"INSERT INTO %s (%s) VALUES %s",
tableSQL,
strings.Join(quotedCols, ", "),
strings.Join(values, ", "),
)
_, err := c.pool.Exec(ctx, sql, args...) // ⭐关键修复
return err
}
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package db
import (
"allapp-go/internal/middleware"
"context"
"time"
)
var auditExcludeTables = map[string]bool{
"b_user": true,
"b_user_oauth": true,
}
// 返回新 map(避免修改入参)
func applyMetaFields(ctx context.Context, table string, data map[string]any, isInsert bool) map[string]any {
if auditExcludeTables[table] {
return data
}
now := time.Now()
newData := make(map[string]any, len(data)+2)
for k, v := range data {
newData[k] = v
}
if isInsert {
newData["create_time"] = now
newData["update_time"] = now
} else {
newData["update_time"] = now
}
if userID, ok := middleware.GetUserID(ctx); ok {
if isInsert {
newData["create_by"] = userID
}
newData["update_by"] = userID
}
return newData
}
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package db
import (
"allapp-go/pkg/logger"
"context"
"fmt"
"strconv"
"strings"
"go.uber.org/zap"
)
func (c *Client) LoadData(
ctx context.Context,
viewName string,
searchCondition string,
orderBy string,
searchColumns []string,
args []any,
) ([]map[string]any, error) {
selectCols := "*"
if len(searchColumns) > 0 {
selectCols = strings.Join(searchColumns, ", ")
}
where := ""
if searchCondition != "" {
where = " WHERE " + searchCondition
}
order := ""
if orderBy != "" {
order = " ORDER BY " + orderBy
}
sql := fmt.Sprintf(
"SELECT %s FROM %s%s%s",
selectCols,
viewName,
where,
order,
)
logger.FromCtx(ctx).Info("LoadData",
zap.String("sql", sql),
zap.Any("args", args),
)
return c.query(ctx, sql, args...)
}
func (c *Client) LoadDataBySQL(
ctx context.Context,
sql string,
args []any,
) ([]map[string]any, error) {
logger.FromCtx(ctx).Info("LoadDataBySQL",
zap.String("sql", sql),
zap.Any("args", args),
)
return c.query(ctx, sql, args...)
}
func (c *Client) query(ctx context.Context, sql string, args ...any) ([]map[string]any, error) {
sql = convertPlaceholder(sql)
rows, err := c.pool.Query(ctx, sql, args...)
if err != nil {
return nil, err
}
defer rows.Close()
fields := rows.FieldDescriptions()
result := make([]map[string]any, 0, 16)
for rows.Next() {
values, err := rows.Values()
if err != nil {
return nil, err
}
row := make(map[string]any, len(values))
for i := range fields {
if i < len(values) {
row[string(fields[i].Name)] = values[i]
}
}
result = append(result, row)
}
if err := rows.Err(); err != nil {
return nil, err
}
return result, nil
}
func convertPlaceholder(sql string) string {
var sb strings.Builder
sb.Grow(len(sql))
argIndex := 1
for i := 0; i < len(sql); i++ {
if sql[i] == '?' {
sb.WriteByte('$')
sb.WriteString(strconv.Itoa(argIndex))
argIndex++
} else {
sb.WriteByte(sql[i])
}
}
return sb.String()
}
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package db
import (
"context"
)
func (c *Client) WithTx(ctx context.Context, fn func(tx *Client) error) error {
tx, err := c.pool.Begin(ctx)
if err != nil {
return err
}
// 创建事务 client
txClient := &Client{
pool: c.pool,
tx: tx,
}
// rollback 兜底(防 panic / 提前 return)
defer func() {
_ = tx.Rollback(ctx)
}()
// 执行业务
if err := fn(txClient); err != nil {
_ = tx.Rollback(ctx)
return err
}
// commit
if err := tx.Commit(ctx); err != nil {
_ = tx.Rollback(ctx)
return err
}
return nil
}
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package db
import (
"context"
"fmt"
"sort"
"strings"
)
func (c *Client) Update(ctx context.Context, table, keyField string, data map[string]any) error {
keyVal, err := validateData(table, keyField, data)
if err != nil {
return err
}
data = applyMetaFields(ctx, table, data, false)
var (
set []string
args []any
i = 1
)
for k, v := range data {
if k == keyField {
continue
}
set = append(set, fmt.Sprintf("%s=$%d", quoteCol(k), i))
args = append(args, v)
i++
}
args = append(args, keyVal)
sql := fmt.Sprintf(
"UPDATE %s SET %s WHERE %s=$%d",
quoteTable(table),
strings.Join(set, ", "),
quoteCol(keyField),
i,
)
_, err = c.pool.Exec(ctx, sql, args...)
return err
}
func (c *Client) BatchUpdate(ctx context.Context, table, keyField string, list []map[string]any) error {
if len(list) == 0 {
return fmt.Errorf("empty data")
}
first := list[0]
if _, err := validateData(table, keyField, first); err != nil {
return err
}
tableSQL := quoteTable(table)
keySQL := quoteCol(keyField)
var cols []string
for k := range first {
if k != keyField {
cols = append(cols, k)
}
}
sort.Strings(cols)
var (
args []any
argIndex = 1
sets []string
)
// CASE 构建
for _, col := range cols {
colSQL := quoteCol(col)
var caseSQL strings.Builder
caseSQL.WriteString(fmt.Sprintf("%s = CASE %s ", colSQL, keySQL))
for _, row := range list {
row = applyMetaFields(ctx, table, row, false)
keyVal := row[keyField]
val := row[col]
caseSQL.WriteString(fmt.Sprintf(
"WHEN $%d THEN $%d ",
argIndex,
argIndex+1,
))
args = append(args, keyVal, val)
argIndex += 2
}
caseSQL.WriteString("END")
sets = append(sets, caseSQL.String())
}
// ⭐修复 IN 写法(关键)
var inPlaceholders []string
for _, row := range list {
inPlaceholders = append(inPlaceholders, fmt.Sprintf("$%d", argIndex))
args = append(args, row[keyField])
argIndex++
}
sql := fmt.Sprintf(
"UPDATE %s SET %s WHERE %s IN (%s)",
tableSQL,
strings.Join(sets, ", "),
keySQL,
strings.Join(inPlaceholders, ", "),
)
_, err := c.pool.Exec(ctx, sql, args...) // ⭐修复点
return err
}
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package db
import (
"allapp-go/pkg/uniqueid"
"fmt"
"regexp"
"strings"
)
var identRe = regexp.MustCompile(`^[a-zA-Z0-9_]+$`)
// 安全标识符校验
func safeIdent(name string) bool {
return identRe.MatchString(name)
}
// 表名引用(支持 schema)
func quoteTable(table string) string {
parts := strings.Split(table, ".")
for i, p := range parts {
if !safeIdent(p) {
panic(fmt.Sprintf("invalid table: %s", p))
}
parts[i] = `"` + p + `"`
}
return strings.Join(parts, ".")
}
// 字段引用
func quoteCol(col string) string {
if !safeIdent(col) {
panic(fmt.Sprintf("invalid column: %s", col))
}
return `"` + col + `"`
}
// 校验数据
func validateData(table string, keyField string, data map[string]any) (any, error) {
if table == "" {
return nil, fmt.Errorf("表名不能为空")
}
if len(data) == 0 {
return nil, fmt.Errorf("数据不能为空")
}
if keyField == "" {
return nil, fmt.Errorf("主键字段不能为空")
}
val, ok := data[keyField]
if !ok {
return nil, fmt.Errorf("缺少主键字段: %s", keyField)
}
if val == nil {
return nil, fmt.Errorf("主键字段值不能为空")
}
return val, nil
}
// 校验数据
func validateInsertData(table string, keyField string, data map[string]any) (any, error) {
if table == "" {
return nil, fmt.Errorf("表名不能为空")
}
if len(data) == 0 {
return nil, fmt.Errorf("数据不能为空")
}
if keyField == "" {
return nil, fmt.Errorf("主键字段不能为空")
}
val, _ := data[keyField]
return val, nil
}
func ensureID(data map[string]any, keyField string) {
v, ok := data[keyField]
if !ok || v == nil || v == "" {
data[keyField] = uniqueid.NextId()
}
}