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Merged
chenquan merged 1 commit into from
Sep 11, 2022
Merged

feat: support multiple hooks #2

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8 changes: 4 additions & 4 deletions conn.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@ type conn struct {
}

func (c *conn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (result driver.Result, err error) {
ctx, err = c.BeforeExecContext(ctx, query, args)
ctx, query, args, err = c.BeforeExecContext(ctx, query, args, nil)
defer func() {
_, result, err = c.AfterExecContext(ctx, query, args, result, err)
}()
Expand Down Expand Up @@ -48,7 +48,7 @@ func (c *conn) ExecContext(ctx context.Context, query string, args []driver.Name
}

func (c *conn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (rows driver.Rows, err error) {
ctx, err = c.BeforeQueryContext(ctx, query, args)
ctx, query, args, err = c.BeforeQueryContext(ctx, query, args, nil)
defer func() {
_, rows, err = c.AfterQueryContext(ctx, query, args, rows, err)
}()
Expand Down Expand Up @@ -78,7 +78,7 @@ func (c *conn) QueryContext(ctx context.Context, query string, args []driver.Nam
}

func (c *conn) PrepareContext(ctx context.Context, query string) (s driver.Stmt, err error) {
ctx, err = c.BeforePrepareContext(ctx, query)
ctx, query, err = c.BeforePrepareContext(ctx, query, nil)
defer func() {
_, s, err = c.AfterPrepareContext(ctx, query, s, err)
}()
Expand All @@ -101,7 +101,7 @@ func (c *conn) PrepareContext(ctx context.Context, query string) (s driver.Stmt,
}

func (c *conn) BeginTx(ctx context.Context, opts driver.TxOptions) (dd driver.Tx, err error) {
ctx, err = c.BeforeBeginTx(ctx, opts)
ctx, opts, err = c.BeforeBeginTx(ctx, opts, nil)
defer func() {
_, dd, err = c.AfterBeginTx(ctx, opts, dd, err)
}()
Expand Down
2 changes: 1 addition & 1 deletion connector.go
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ type connector struct {
}

func (c *connector) Connect(ctx context.Context) (dc driver.Conn, err error) {
ctx, err = c.BeforeConnect(ctx)
ctx, err = c.BeforeConnect(ctx, nil)
defer func() {
_, dc, err = c.AfterConnect(ctx, dc, err)
}()
Expand Down
207 changes: 180 additions & 27 deletions hook.go
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Original file line number Diff line number Diff line change
Expand Up @@ -5,39 +5,192 @@ import (
"database/sql/driver"
)

type Hook interface {
ConnectorHook
ConnHook
TxHook
StmtHook
type (
Hook interface {
ConnectorHook
ConnHook
TxHook
StmtHook
}
ConnHook interface {
BeforeExecContext(ctx context.Context, query string, args []driver.NamedValue, err error) (context.Context, string, []driver.NamedValue, error)
AfterExecContext(ctx context.Context, query string, args []driver.NamedValue, r driver.Result, err error) (context.Context, driver.Result, error)

BeforeBeginTx(ctx context.Context, opts driver.TxOptions, err error) (context.Context, driver.TxOptions, error)
AfterBeginTx(ctx context.Context, opts driver.TxOptions, dd driver.Tx, err error) (context.Context, driver.Tx, error)

BeforeQueryContext(ctx context.Context, query string, args []driver.NamedValue, err error) (context.Context, string, []driver.NamedValue, error)
AfterQueryContext(ctx context.Context, query string, args []driver.NamedValue, rows driver.Rows, err error) (context.Context, driver.Rows, error)

BeforePrepareContext(ctx context.Context, query string, err error) (context.Context, string, error)
AfterPrepareContext(ctx context.Context, query string, s driver.Stmt, err error) (context.Context, driver.Stmt, error)
}
ConnectorHook interface {
BeforeConnect(ctx context.Context, err error) (context.Context, error)
AfterConnect(ctx context.Context, dc driver.Conn, err error) (context.Context, driver.Conn, error)
}
TxHook interface {
BeforeCommit(ctx context.Context, err error) (context.Context, error)
AfterCommit(ctx context.Context, err error) (context.Context, error)
BeforeRollback(ctx context.Context, err error) (context.Context, error)
AfterRollback(ctx context.Context, err error) (context.Context, error)
}
StmtHook interface {
BeforeStmtQueryContext(ctx context.Context, query string, args []driver.NamedValue, err error) (context.Context, []driver.NamedValue, error)
AfterStmtQueryContext(ctx context.Context, query string, args []driver.NamedValue, rows driver.Rows, err error) (context.Context, driver.Rows, error)
BeforeStmtExecContext(ctx context.Context, query string, args []driver.NamedValue, err error) (context.Context, []driver.NamedValue, error)
AfterStmtExecContext(ctx context.Context, query string, args []driver.NamedValue, r driver.Result, err error) (context.Context, driver.Result, error)
}
Hooks struct {
hooks []Hook
}
)

func NewMultiHook(hooks ...Hook) Hook {
return &Hooks{hooks: hooks}
}

func (h *Hooks) BeforeConnect(ctx context.Context, err error) (context.Context, error) {
for _, hook := range h.hooks {
ctx, err = hook.BeforeConnect(ctx, err)
}

return ctx, err
}

func (h *Hooks) AfterConnect(ctx context.Context, dc driver.Conn, err error) (context.Context, driver.Conn, error) {
for _, hook := range h.hooks {
ctx, dc, err = hook.AfterConnect(ctx, dc, err)
}

return ctx, dc, err
}

func (h *Hooks) BeforeExecContext(ctx context.Context, query string, args []driver.NamedValue, err error) (context.Context, string, []driver.NamedValue, error) {
for _, hook := range h.hooks {
ctx, query, args, err = hook.BeforeExecContext(ctx, query, args, err)
}

return ctx, query, args, err
}

func (h *Hooks) AfterExecContext(ctx context.Context, query string, args []driver.NamedValue, r driver.Result, err error) (context.Context, driver.Result, error) {
for _, hook := range h.hooks {
ctx, r, err = hook.AfterExecContext(ctx, query, args, r, err)
}

return ctx, r, err
}

func (h *Hooks) BeforeBeginTx(ctx context.Context, opts driver.TxOptions, err error) (context.Context, driver.TxOptions, error) {
for _, hook := range h.hooks {
ctx, opts, err = hook.BeforeBeginTx(ctx, opts, err)
}

return ctx, opts, err
}

func (h *Hooks) AfterBeginTx(ctx context.Context, opts driver.TxOptions, dd driver.Tx, err error) (context.Context, driver.Tx, error) {
for _, hook := range h.hooks {
ctx, dd, err = hook.AfterBeginTx(ctx, opts, dd, err)
}

return ctx, dd, err
}

func (h *Hooks) BeforeQueryContext(ctx context.Context, query string, args []driver.NamedValue, err error) (context.Context, string, []driver.NamedValue, error) {
for _, hook := range h.hooks {
ctx, query, args, err = hook.BeforeQueryContext(ctx, query, args, err)
}

return ctx, query, args, err
}

type ConnHook interface {
BeforeExecContext(ctx context.Context, query string, args []driver.NamedValue) (context.Context, error)
AfterExecContext(ctx context.Context, query string, args []driver.NamedValue, r driver.Result, err error) (context.Context, driver.Result, error)
BeforeBeginTx(ctx context.Context, opts driver.TxOptions) (context.Context, error)
AfterBeginTx(ctx context.Context, opts driver.TxOptions, dd driver.Tx, err error) (context.Context, driver.Tx, error)
BeforeQueryContext(ctx context.Context, query string, args []driver.NamedValue) (context.Context, error)
AfterQueryContext(ctx context.Context, query string, args []driver.NamedValue, rows driver.Rows, err error) (context.Context, driver.Rows, error)
BeforePrepareContext(ctx context.Context, query string) (context.Context, error)
AfterPrepareContext(ctx context.Context, query string, s driver.Stmt, err error) (context.Context, driver.Stmt, error)
func (h *Hooks) AfterQueryContext(ctx context.Context, query string, args []driver.NamedValue, rows driver.Rows, err error) (context.Context, driver.Rows, error) {
for _, hook := range h.hooks {
ctx, rows, err = hook.AfterQueryContext(ctx, query, args, rows, err)

}

return ctx, rows, err
}

func (h *Hooks) BeforePrepareContext(ctx context.Context, query string, err error) (context.Context, string, error) {
for _, hook := range h.hooks {
ctx, query, err = hook.BeforePrepareContext(ctx, query, err)
}

return ctx, query, err
}

func (h *Hooks) AfterPrepareContext(ctx context.Context, query string, s driver.Stmt, err error) (context.Context, driver.Stmt, error) {
for _, hook := range h.hooks {
ctx, s, err = hook.AfterPrepareContext(ctx, query, s, err)
}

return ctx, s, err
}

func (h *Hooks) BeforeCommit(ctx context.Context, err error) (context.Context, error) {
for _, hook := range h.hooks {
ctx, err = hook.BeforeCommit(ctx, err)
}

return ctx, err
}

func (h *Hooks) AfterCommit(ctx context.Context, err error) (context.Context, error) {
for _, hook := range h.hooks {
ctx, err = hook.AfterCommit(ctx, err)
}

return ctx, err
}

type ConnectorHook interface {
BeforeConnect(ctx context.Context) (context.Context, error)
AfterConnect(ctx context.Context, dc driver.Conn, err error) (context.Context, driver.Conn, error)
func (h *Hooks) BeforeRollback(ctx context.Context, err error) (context.Context, error) {
for _, hook := range h.hooks {
ctx, err = hook.BeforeRollback(ctx, err)
}

return ctx, err
}

type TxHook interface {
BeforeCommit(ctx context.Context) (context.Context, error)
AfterCommit(ctx context.Context, err error) (context.Context, error)
BeforeRollback(ctx context.Context) (context.Context, error)
AfterRollback(ctx context.Context, err error) (context.Context, error)
func (h *Hooks) AfterRollback(ctx context.Context, err error) (context.Context, error) {
for _, hook := range h.hooks {
ctx, err = hook.AfterRollback(ctx, err)
}

return ctx, err
}

type StmtHook interface {
BeforeStmtQueryContext(ctx context.Context, query string, args []driver.NamedValue) (context.Context, error)
AfterStmtQueryContext(ctx context.Context, query string, args []driver.NamedValue, rows driver.Rows, err error) (context.Context, driver.Rows, error)
BeforeStmtExecContext(ctx context.Context, query string, args []driver.NamedValue) (context.Context, error)
AfterStmtExecContext(ctx context.Context, query string, args []driver.NamedValue, r driver.Result, err error) (context.Context, driver.Result, error)
func (h *Hooks) BeforeStmtQueryContext(ctx context.Context, query string, args []driver.NamedValue, err error) (context.Context, []driver.NamedValue, error) {
for _, hook := range h.hooks {
ctx, args, err = hook.BeforeStmtQueryContext(ctx, query, args, err)
}

return ctx, args, err
}

func (h *Hooks) AfterStmtQueryContext(ctx context.Context, query string, args []driver.NamedValue, rows driver.Rows, err error) (context.Context, driver.Rows, error) {
for _, hook := range h.hooks {
ctx, rows, err = hook.AfterStmtQueryContext(ctx, query, args, rows, err)
}

return ctx, rows, err
}

func (h *Hooks) BeforeStmtExecContext(ctx context.Context, query string, args []driver.NamedValue, err error) (context.Context, []driver.NamedValue, error) {
for _, hook := range h.hooks {
ctx, args, err = hook.BeforeStmtExecContext(ctx, query, args, err)
}

return ctx, args, err
}

func (h *Hooks) AfterStmtExecContext(ctx context.Context, query string, args []driver.NamedValue, r driver.Result, err error) (context.Context, driver.Result, error) {
for _, hook := range h.hooks {
ctx, r, err = hook.AfterStmtExecContext(ctx, query, args, r, err)
}

return ctx, r, err
}
23 changes: 9 additions & 14 deletions stmt.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,9 +18,10 @@ type stmt struct {
}

func (s *stmt) QueryContext(ctx context.Context, args []driver.NamedValue) (rows driver.Rows, err error) {
ctx, err = s.BeforeStmtQueryContext(ctx, s.query, args)
query := s.query
ctx, args, err = s.BeforeStmtQueryContext(ctx, query, args, nil)
defer func() {
_, rows, err = s.AfterStmtQueryContext(ctx, s.query, args, rows, err)
_, rows, err = s.AfterStmtQueryContext(ctx, query, args, rows, err)
}()
if err != nil {
return nil, err
Expand All @@ -29,22 +30,20 @@ func (s *stmt) QueryContext(ctx context.Context, args []driver.NamedValue) (rows
switch ss := s.Stmt.(type) {
case driver.StmtQueryContext:
return ss.QueryContext(ctx, args)
case interface {
Query(args []driver.Value) (driver.Rows, error)
}:
default:
value, err := namedValueToValue(args)
if err != nil {
return nil, err
}

return ss.Query(value)
return s.Query(value)
}

return nil, errNoInterfaceImplementation
}

func (s *stmt) ExecContext(ctx context.Context, args []driver.NamedValue) (r driver.Result, err error) {
ctx, err = s.BeforeStmtExecContext(ctx, s.query, args)

ctx, args, err = s.BeforeStmtExecContext(ctx, s.query, args, nil)
defer func() {
_, r, err = s.AfterStmtExecContext(ctx, s.query, args, r, err)
}()
Expand All @@ -55,16 +54,12 @@ func (s *stmt) ExecContext(ctx context.Context, args []driver.NamedValue) (r dri
switch ss := s.Stmt.(type) {
case driver.StmtExecContext:
return ss.ExecContext(ctx, args)
case interface {
Exec(args []driver.Value) (driver.Result, error)
}:
default:
value, err := namedValueToValue(args)
if err != nil {
return nil, err
}

return ss.Exec(value)
return s.Exec(value)
}

return nil, errNoInterfaceImplementation
}
4 changes: 2 additions & 2 deletions tx.go
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ type tx struct {

func (t *tx) Commit() (err error) {
ctx := context.Background()
ctx, err = t.BeforeCommit(ctx)
ctx, err = t.BeforeCommit(ctx, nil)
defer func() {
_, err = t.AfterCommit(ctx, err)
}()
Expand All @@ -30,7 +30,7 @@ func (t *tx) Commit() (err error) {

func (t *tx) Rollback() (err error) {
ctx := context.Background()
ctx, err = t.BeforeRollback(ctx)
ctx, err = t.BeforeRollback(ctx, nil)
defer func() {
_, err = t.AfterRollback(ctx, err)
}()
Expand Down