mirror of https://github.com/ledisdb/ledisdb.git
112 lines
1.9 KiB
Go
112 lines
1.9 KiB
Go
package server
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import (
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"fmt"
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"github.com/siddontang/ledisdb/ledis"
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"strconv"
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"strings"
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)
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type CommandFunc func(c *client) error
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var regCmds = map[string]CommandFunc{}
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func register(name string, f CommandFunc) {
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if _, ok := regCmds[strings.ToLower(name)]; ok {
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panic(fmt.Sprintf("%s has been registered", name))
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}
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regCmds[name] = f
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}
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func pingCommand(c *client) error {
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c.resp.writeStatus(PONG)
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return nil
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}
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func echoCommand(c *client) error {
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if len(c.args) != 1 {
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return ErrCmdParams
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}
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c.resp.writeBulk(c.args[0])
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return nil
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}
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func selectCommand(c *client) error {
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if len(c.args) != 1 {
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return ErrCmdParams
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}
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if index, err := strconv.Atoi(ledis.String(c.args[0])); err != nil {
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return err
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} else {
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if c.db.IsTransaction() {
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if err := c.tx.Select(index); err != nil {
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return err
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} else {
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c.db = c.tx.DB
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}
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} else if c.db.IsInMulti() {
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if err := c.script.Select(index); err != nil {
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return err
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} else {
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c.db = c.script.DB
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}
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} else {
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if db, err := c.ldb.Select(index); err != nil {
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return err
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} else {
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c.db = db
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}
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}
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c.resp.writeStatus(OK)
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}
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return nil
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}
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func infoCommand(c *client) error {
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if len(c.args) > 1 {
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return ErrSyntax
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}
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var section string
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if len(c.args) == 1 {
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section = strings.ToLower(ledis.String(c.args[0]))
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}
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buf := c.app.info.Dump(section)
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c.resp.writeBulk(buf)
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return nil
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}
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func flushallCommand(c *client) error {
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err := c.ldb.FlushAll()
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if err != nil {
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return err
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}
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c.resp.writeStatus(OK)
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return nil
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}
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func flushdbCommand(c *client) error {
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_, err := c.db.FlushAll()
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if err != nil {
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return err
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}
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c.resp.writeStatus(OK)
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return nil
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}
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func init() {
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register("ping", pingCommand)
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register("echo", echoCommand)
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register("select", selectCommand)
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register("info", infoCommand)
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register("flushall", flushallCommand)
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register("flushdb", flushdbCommand)
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}
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