forked from mirror/redis
753 lines
14 KiB
Go
753 lines
14 KiB
Go
package redis
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import (
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"fmt"
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"strconv"
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"strings"
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"time"
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"gopkg.in/bufio.v1"
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)
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var (
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_ Cmder = (*Cmd)(nil)
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_ Cmder = (*SliceCmd)(nil)
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_ Cmder = (*StatusCmd)(nil)
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_ Cmder = (*IntCmd)(nil)
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_ Cmder = (*DurationCmd)(nil)
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_ Cmder = (*BoolCmd)(nil)
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_ Cmder = (*StringCmd)(nil)
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_ Cmder = (*FloatCmd)(nil)
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_ Cmder = (*StringSliceCmd)(nil)
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_ Cmder = (*BoolSliceCmd)(nil)
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_ Cmder = (*StringStringMapCmd)(nil)
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_ Cmder = (*StringIntMapCmd)(nil)
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_ Cmder = (*ZSliceCmd)(nil)
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_ Cmder = (*ScanCmd)(nil)
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_ Cmder = (*ClusterSlotCmd)(nil)
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)
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type Cmder interface {
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args() []string
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parseReply(*bufio.Reader) error
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setErr(error)
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reset()
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writeTimeout() *time.Duration
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readTimeout() *time.Duration
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clusterKey() string
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Err() error
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String() string
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}
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func setCmdsErr(cmds []Cmder, e error) {
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for _, cmd := range cmds {
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cmd.setErr(e)
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}
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}
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func resetCmds(cmds []Cmder) {
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for _, cmd := range cmds {
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cmd.reset()
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}
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}
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func cmdString(cmd Cmder, val interface{}) string {
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s := strings.Join(cmd.args(), " ")
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if err := cmd.Err(); err != nil {
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return s + ": " + err.Error()
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}
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if val != nil {
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return s + ": " + fmt.Sprint(val)
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}
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return s
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}
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//------------------------------------------------------------------------------
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type baseCmd struct {
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_args []string
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err error
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_clusterKeyPos int
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_writeTimeout, _readTimeout *time.Duration
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}
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func (cmd *baseCmd) Err() error {
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if cmd.err != nil {
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return cmd.err
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}
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return nil
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}
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func (cmd *baseCmd) args() []string {
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return cmd._args
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}
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func (cmd *baseCmd) readTimeout() *time.Duration {
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return cmd._readTimeout
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}
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func (cmd *baseCmd) setReadTimeout(d time.Duration) {
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cmd._readTimeout = &d
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}
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func (cmd *baseCmd) writeTimeout() *time.Duration {
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return cmd._writeTimeout
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}
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func (cmd *baseCmd) clusterKey() string {
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if cmd._clusterKeyPos > 0 && cmd._clusterKeyPos < len(cmd._args) {
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return cmd._args[cmd._clusterKeyPos]
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}
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return ""
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}
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func (cmd *baseCmd) setWriteTimeout(d time.Duration) {
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cmd._writeTimeout = &d
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}
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func (cmd *baseCmd) setErr(e error) {
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cmd.err = e
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}
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//------------------------------------------------------------------------------
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type Cmd struct {
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baseCmd
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val interface{}
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}
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func NewCmd(args ...string) *Cmd {
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return &Cmd{baseCmd: baseCmd{_args: args}}
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}
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func (cmd *Cmd) reset() {
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cmd.val = nil
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cmd.err = nil
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}
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func (cmd *Cmd) Val() interface{} {
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return cmd.val
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}
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func (cmd *Cmd) Result() (interface{}, error) {
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return cmd.val, cmd.err
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}
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func (cmd *Cmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *Cmd) parseReply(rd *bufio.Reader) error {
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cmd.val, cmd.err = parseReply(rd, parseSlice)
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return cmd.err
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}
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//------------------------------------------------------------------------------
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type SliceCmd struct {
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baseCmd
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val []interface{}
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}
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func NewSliceCmd(args ...string) *SliceCmd {
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return &SliceCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *SliceCmd) reset() {
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cmd.val = nil
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cmd.err = nil
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}
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func (cmd *SliceCmd) Val() []interface{} {
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return cmd.val
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}
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func (cmd *SliceCmd) Result() ([]interface{}, error) {
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return cmd.val, cmd.err
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}
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func (cmd *SliceCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *SliceCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, parseSlice)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val = v.([]interface{})
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return nil
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}
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//------------------------------------------------------------------------------
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type StatusCmd struct {
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baseCmd
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val string
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}
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func NewStatusCmd(args ...string) *StatusCmd {
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return &StatusCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func newKeylessStatusCmd(args ...string) *StatusCmd {
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return &StatusCmd{baseCmd: baseCmd{_args: args}}
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}
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func (cmd *StatusCmd) reset() {
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cmd.val = ""
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cmd.err = nil
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}
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func (cmd *StatusCmd) Val() string {
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return cmd.val
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}
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func (cmd *StatusCmd) Result() (string, error) {
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return cmd.val, cmd.err
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}
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func (cmd *StatusCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *StatusCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, nil)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val = v.(string)
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return nil
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}
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//------------------------------------------------------------------------------
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type IntCmd struct {
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baseCmd
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val int64
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}
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func NewIntCmd(args ...string) *IntCmd {
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return &IntCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *IntCmd) reset() {
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cmd.val = 0
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cmd.err = nil
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}
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func (cmd *IntCmd) Val() int64 {
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return cmd.val
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}
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func (cmd *IntCmd) Result() (int64, error) {
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return cmd.val, cmd.err
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}
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func (cmd *IntCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *IntCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, nil)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val = v.(int64)
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return nil
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}
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//------------------------------------------------------------------------------
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type DurationCmd struct {
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baseCmd
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val time.Duration
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precision time.Duration
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}
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func NewDurationCmd(precision time.Duration, args ...string) *DurationCmd {
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return &DurationCmd{
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precision: precision,
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baseCmd: baseCmd{_args: args, _clusterKeyPos: 1},
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}
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}
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func (cmd *DurationCmd) reset() {
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cmd.val = 0
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cmd.err = nil
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}
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func (cmd *DurationCmd) Val() time.Duration {
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return cmd.val
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}
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func (cmd *DurationCmd) Result() (time.Duration, error) {
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return cmd.val, cmd.err
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}
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func (cmd *DurationCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *DurationCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, nil)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val = time.Duration(v.(int64)) * cmd.precision
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return nil
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}
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//------------------------------------------------------------------------------
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type BoolCmd struct {
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baseCmd
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val bool
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}
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func NewBoolCmd(args ...string) *BoolCmd {
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return &BoolCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *BoolCmd) reset() {
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cmd.val = false
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cmd.err = nil
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}
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func (cmd *BoolCmd) Val() bool {
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return cmd.val
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}
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func (cmd *BoolCmd) Result() (bool, error) {
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return cmd.val, cmd.err
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}
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func (cmd *BoolCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *BoolCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, nil)
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// `SET key value NX` returns nil when key already exists.
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if err == Nil {
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cmd.val = false
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return nil
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}
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if err != nil {
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cmd.err = err
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return err
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}
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switch vv := v.(type) {
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case int64:
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cmd.val = vv == 1
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return nil
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case string:
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cmd.val = vv == "OK"
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return nil
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default:
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return fmt.Errorf("got %T, wanted int64 or string")
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}
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}
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//------------------------------------------------------------------------------
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type StringCmd struct {
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baseCmd
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val string
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}
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func NewStringCmd(args ...string) *StringCmd {
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return &StringCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *StringCmd) reset() {
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cmd.val = ""
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cmd.err = nil
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}
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func (cmd *StringCmd) Val() string {
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return cmd.val
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}
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func (cmd *StringCmd) Result() (string, error) {
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return cmd.val, cmd.err
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}
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func (cmd *StringCmd) Int64() (int64, error) {
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if cmd.err != nil {
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return 0, cmd.err
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}
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return strconv.ParseInt(cmd.val, 10, 64)
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}
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func (cmd *StringCmd) Uint64() (uint64, error) {
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if cmd.err != nil {
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return 0, cmd.err
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}
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return strconv.ParseUint(cmd.val, 10, 64)
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}
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func (cmd *StringCmd) Float64() (float64, error) {
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if cmd.err != nil {
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return 0, cmd.err
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}
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return strconv.ParseFloat(cmd.val, 64)
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}
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func (cmd *StringCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *StringCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, nil)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val = v.(string)
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return nil
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}
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//------------------------------------------------------------------------------
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type FloatCmd struct {
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baseCmd
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val float64
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}
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func NewFloatCmd(args ...string) *FloatCmd {
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return &FloatCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *FloatCmd) reset() {
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cmd.val = 0
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cmd.err = nil
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}
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func (cmd *FloatCmd) Val() float64 {
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return cmd.val
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}
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func (cmd *FloatCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *FloatCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, nil)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val, cmd.err = strconv.ParseFloat(v.(string), 64)
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return cmd.err
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}
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//------------------------------------------------------------------------------
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type StringSliceCmd struct {
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baseCmd
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val []string
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}
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func NewStringSliceCmd(args ...string) *StringSliceCmd {
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return &StringSliceCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *StringSliceCmd) reset() {
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cmd.val = nil
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cmd.err = nil
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}
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func (cmd *StringSliceCmd) Val() []string {
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return cmd.val
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}
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func (cmd *StringSliceCmd) Result() ([]string, error) {
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return cmd.Val(), cmd.Err()
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}
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func (cmd *StringSliceCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *StringSliceCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, parseStringSlice)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val = v.([]string)
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return nil
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}
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//------------------------------------------------------------------------------
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type BoolSliceCmd struct {
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baseCmd
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val []bool
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}
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func NewBoolSliceCmd(args ...string) *BoolSliceCmd {
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return &BoolSliceCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *BoolSliceCmd) reset() {
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cmd.val = nil
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cmd.err = nil
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}
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func (cmd *BoolSliceCmd) Val() []bool {
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return cmd.val
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}
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func (cmd *BoolSliceCmd) Result() ([]bool, error) {
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return cmd.val, cmd.err
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}
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func (cmd *BoolSliceCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *BoolSliceCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, parseBoolSlice)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val = v.([]bool)
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return nil
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}
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//------------------------------------------------------------------------------
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type StringStringMapCmd struct {
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baseCmd
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val map[string]string
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}
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func NewStringStringMapCmd(args ...string) *StringStringMapCmd {
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return &StringStringMapCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *StringStringMapCmd) reset() {
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cmd.val = nil
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cmd.err = nil
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}
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func (cmd *StringStringMapCmd) Val() map[string]string {
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return cmd.val
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}
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func (cmd *StringStringMapCmd) Result() (map[string]string, error) {
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return cmd.val, cmd.err
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}
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func (cmd *StringStringMapCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *StringStringMapCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, parseStringStringMap)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val = v.(map[string]string)
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return nil
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}
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//------------------------------------------------------------------------------
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type StringIntMapCmd struct {
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baseCmd
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val map[string]int64
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}
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func NewStringIntMapCmd(args ...string) *StringIntMapCmd {
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return &StringIntMapCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *StringIntMapCmd) Val() map[string]int64 {
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return cmd.val
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}
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func (cmd *StringIntMapCmd) Result() (map[string]int64, error) {
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return cmd.val, cmd.err
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}
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func (cmd *StringIntMapCmd) String() string {
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return cmdString(cmd, cmd.val)
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}
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func (cmd *StringIntMapCmd) reset() {
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cmd.val = nil
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cmd.err = nil
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}
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func (cmd *StringIntMapCmd) parseReply(rd *bufio.Reader) error {
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v, err := parseReply(rd, parseStringIntMap)
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if err != nil {
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cmd.err = err
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return err
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}
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cmd.val = v.(map[string]int64)
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return nil
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}
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//------------------------------------------------------------------------------
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type ZSliceCmd struct {
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baseCmd
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val []Z
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}
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func NewZSliceCmd(args ...string) *ZSliceCmd {
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return &ZSliceCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
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}
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func (cmd *ZSliceCmd) reset() {
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cmd.val = nil
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cmd.err = nil
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}
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func (cmd *ZSliceCmd) Val() []Z {
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return cmd.val
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}
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|
|
func (cmd *ZSliceCmd) Result() ([]Z, error) {
|
|
return cmd.val, cmd.err
|
|
}
|
|
|
|
func (cmd *ZSliceCmd) String() string {
|
|
return cmdString(cmd, cmd.val)
|
|
}
|
|
|
|
func (cmd *ZSliceCmd) parseReply(rd *bufio.Reader) error {
|
|
v, err := parseReply(rd, parseZSlice)
|
|
if err != nil {
|
|
cmd.err = err
|
|
return err
|
|
}
|
|
cmd.val = v.([]Z)
|
|
return nil
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
type ScanCmd struct {
|
|
baseCmd
|
|
|
|
cursor int64
|
|
keys []string
|
|
}
|
|
|
|
func NewScanCmd(args ...string) *ScanCmd {
|
|
return &ScanCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
|
|
}
|
|
|
|
func (cmd *ScanCmd) reset() {
|
|
cmd.cursor = 0
|
|
cmd.keys = nil
|
|
cmd.err = nil
|
|
}
|
|
|
|
func (cmd *ScanCmd) Val() (int64, []string) {
|
|
return cmd.cursor, cmd.keys
|
|
}
|
|
|
|
func (cmd *ScanCmd) Result() (int64, []string, error) {
|
|
return cmd.cursor, cmd.keys, cmd.err
|
|
}
|
|
|
|
func (cmd *ScanCmd) String() string {
|
|
return cmdString(cmd, cmd.keys)
|
|
}
|
|
|
|
func (cmd *ScanCmd) parseReply(rd *bufio.Reader) error {
|
|
vi, err := parseReply(rd, parseSlice)
|
|
if err != nil {
|
|
cmd.err = err
|
|
return cmd.err
|
|
}
|
|
v := vi.([]interface{})
|
|
|
|
cmd.cursor, cmd.err = strconv.ParseInt(v[0].(string), 10, 64)
|
|
if cmd.err != nil {
|
|
return cmd.err
|
|
}
|
|
|
|
keys := v[1].([]interface{})
|
|
for _, keyi := range keys {
|
|
cmd.keys = append(cmd.keys, keyi.(string))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
type ClusterSlotInfo struct {
|
|
Start, End int
|
|
Addrs []string
|
|
}
|
|
|
|
type ClusterSlotCmd struct {
|
|
baseCmd
|
|
|
|
val []ClusterSlotInfo
|
|
}
|
|
|
|
func NewClusterSlotCmd(args ...string) *ClusterSlotCmd {
|
|
return &ClusterSlotCmd{baseCmd: baseCmd{_args: args, _clusterKeyPos: 1}}
|
|
}
|
|
|
|
func (cmd *ClusterSlotCmd) Val() []ClusterSlotInfo {
|
|
return cmd.val
|
|
}
|
|
|
|
func (cmd *ClusterSlotCmd) Result() ([]ClusterSlotInfo, error) {
|
|
return cmd.Val(), cmd.Err()
|
|
}
|
|
|
|
func (cmd *ClusterSlotCmd) String() string {
|
|
return cmdString(cmd, cmd.val)
|
|
}
|
|
|
|
func (cmd *ClusterSlotCmd) reset() {
|
|
cmd.val = nil
|
|
cmd.err = nil
|
|
}
|
|
|
|
func (cmd *ClusterSlotCmd) parseReply(rd *bufio.Reader) error {
|
|
v, err := parseReply(rd, parseClusterSlotInfoSlice)
|
|
if err != nil {
|
|
cmd.err = err
|
|
return err
|
|
}
|
|
cmd.val = v.([]ClusterSlotInfo)
|
|
return nil
|
|
}
|