forked from absolute8511/ZanRedisDB
/
util.go
442 lines (402 loc) · 11.3 KB
/
util.go
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package node
import (
"fmt"
"sync/atomic"
"time"
"github.com/absolute8511/redcon"
"github.com/youzan/ZanRedisDB/common"
)
var nodeLog = common.NewLevelLogger(common.LOG_INFO, common.NewLogger())
var syncerOnly int32
var logMaybeConflictDisabled int32
var syncerOnlyChangedTs int64
func SetLogLevel(level int) {
nodeLog.SetLevel(int32(level))
}
func SetLogger(level int32, logger common.Logger) {
nodeLog.SetLevel(level)
nodeLog.Logger = logger
}
func SetSyncerOnly(enable bool) {
if enable {
atomic.StoreInt32(&syncerOnly, 1)
} else {
atomic.StoreInt32(&syncerOnly, 0)
atomic.StoreInt64(&syncerOnlyChangedTs, time.Now().UnixNano())
}
}
func SwitchDisableMaybeConflictLog(disable bool) {
if disable {
atomic.StoreInt32(&logMaybeConflictDisabled, 1)
} else {
atomic.StoreInt32(&logMaybeConflictDisabled, 0)
}
}
func MaybeConflictLogDisabled() bool {
return atomic.LoadInt32(&logMaybeConflictDisabled) == 1
}
func GetSyncedOnlyChangedTs() int64 {
return atomic.LoadInt64(&syncerOnlyChangedTs)
}
func IsSyncerOnly() bool {
return atomic.LoadInt32(&syncerOnly) == 1
}
func checkOKRsp(cmd redcon.Command, v interface{}) (interface{}, error) {
return "OK", nil
}
func checkAndRewriteIntRsp(cmd redcon.Command, v interface{}) (interface{}, error) {
if rsp, ok := v.(int64); ok {
return rsp, nil
}
return nil, errInvalidResponse
}
func checkAndRewriteBulkRsp(cmd redcon.Command, v interface{}) (interface{}, error) {
if v == nil {
return nil, nil
}
rsp, ok := v.([]byte)
if ok {
return rsp, nil
}
return nil, errInvalidResponse
}
func buildCommand(args [][]byte) redcon.Command {
return common.BuildCommand(args)
}
// we can only use redis v2 for single key write command, otherwise we need cut namespace for different keys in different command
func rebuildFirstKeyAndPropose(kvn *KVNode, cmd redcon.Command, f common.CommandRspFunc) (interface{}, error) {
var rsp *FutureRsp
var err error
if !UseRedisV2 {
var key []byte
key, err = common.CutNamesapce(cmd.Args[1])
if err != nil {
return nil, err
}
orig := cmd.Args[1]
cmd.Args[1] = key
ncmd := buildCommand(cmd.Args)
rsp, err = kvn.RedisProposeAsync(ncmd.Raw)
cmd.Args[1] = orig
} else {
rsp, err = kvn.RedisV2ProposeAsync(cmd.Raw)
}
if err != nil {
return nil, err
}
if f != nil {
rsp.rspHandle = func(r interface{}) (interface{}, error) {
return f(cmd, r)
}
}
return rsp, err
}
func wrapReadCommandK(f common.CommandFunc) common.CommandFunc {
return func(conn redcon.Conn, cmd redcon.Command) {
if len(cmd.Args) != 2 {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
key, err := common.CutNamesapce(cmd.Args[1])
if err != nil {
conn.WriteError(err.Error())
return
}
cmd.Args[1] = key
f(conn, cmd)
}
}
func wrapReadCommandKSubkey(f common.CommandFunc) common.CommandFunc {
return func(conn redcon.Conn, cmd redcon.Command) {
if len(cmd.Args) != 3 {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
key, err := common.CutNamesapce(cmd.Args[1])
if err != nil {
conn.WriteError(err.Error())
return
}
cmd.Args[1] = key
f(conn, cmd)
}
}
func wrapReadCommandKSubkeySubkey(f common.CommandFunc) common.CommandFunc {
return func(conn redcon.Conn, cmd redcon.Command) {
if len(cmd.Args) < 3 {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
key, err := common.CutNamesapce(cmd.Args[1])
if err != nil {
conn.WriteError(err.Error())
return
}
cmd.Args[1] = key
f(conn, cmd)
}
}
func wrapReadCommandKAnySubkey(f common.CommandFunc) common.CommandFunc {
return wrapReadCommandKAnySubkeyN(f, 0)
}
func wrapReadCommandKAnySubkeyN(f common.CommandFunc, minSubLen int) common.CommandFunc {
return func(conn redcon.Conn, cmd redcon.Command) {
if len(cmd.Args) < 2+minSubLen {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
key, err := common.CutNamesapce(cmd.Args[1])
if err != nil {
conn.WriteError(err.Error())
return
}
cmd.Args[1] = key
f(conn, cmd)
}
}
func wrapReadCommandKK(f common.CommandFunc) common.CommandFunc {
return func(conn redcon.Conn, cmd redcon.Command) {
if len(cmd.Args) < 2 {
conn.WriteError("ERR wrong number of arguments for '" + string(cmd.Args[0]) + "' command")
return
}
if len(cmd.Args[1:]) > common.MAX_BATCH_NUM {
conn.WriteError(errTooMuchBatchSize.Error())
return
}
for i := 1; i < len(cmd.Args); i++ {
key, err := common.CutNamesapce(cmd.Args[i])
if err != nil {
conn.WriteError(err.Error())
return
}
cmd.Args[i] = key
}
f(conn, cmd)
}
}
func wrapWriteCommandK(kvn *KVNode, preCheck func(key []byte) (bool, interface{}, error), f common.CommandRspFunc) common.WriteCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) != 2 {
err := fmt.Errorf("ERR wrong number arguments for '%v' command", string(cmd.Args[0]))
return nil, err
}
if err := common.CheckKey(cmd.Args[1]); err != nil {
return nil, err
}
if preCheck != nil {
key, err := common.CutNamesapce(cmd.Args[1])
if err != nil {
return nil, err
}
needContinue, rsp, err := preCheck(key)
if err != nil {
return nil, err
}
if !needContinue {
return f(cmd, rsp)
}
}
rsp, err := rebuildFirstKeyAndPropose(kvn, cmd, f)
return rsp, err
}
}
func wrapWriteCommandKSubkey(kvn *KVNode, f common.CommandRspFunc) common.WriteCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) != 3 {
err := fmt.Errorf("ERR wrong number arguments for '%v' command", string(cmd.Args[0]))
return nil, err
}
if err := common.CheckKey(cmd.Args[1]); err != nil {
return nil, err
}
rsp, err := rebuildFirstKeyAndPropose(kvn, cmd, f)
return rsp, err
}
}
func wrapWriteCommandKSubkeySubkey(kvn *KVNode, f common.CommandRspFunc) common.WriteCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) < 3 {
err := fmt.Errorf("ERR wrong number arguments for '%v' command", string(cmd.Args[0]))
return nil, err
}
if err := common.CheckKey(cmd.Args[1]); err != nil {
return nil, err
}
rsp, err := rebuildFirstKeyAndPropose(kvn, cmd, f)
return rsp, err
}
}
func wrapWriteCommandKAnySubkey(kvn *KVNode, f common.CommandRspFunc, minSubKeyLen int) common.WriteCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) < 2+minSubKeyLen {
err := fmt.Errorf("ERR wrong number arguments for '%v' command", string(cmd.Args[0]))
return nil, err
}
if err := common.CheckKey(cmd.Args[1]); err != nil {
return nil, err
}
rsp, err := rebuildFirstKeyAndPropose(kvn, cmd, f)
return rsp, err
}
}
func wrapWriteCommandKAnySubkeyAndMax(kvn *KVNode, f common.CommandRspFunc, minSubKeyLen int, maxSubKeyLen int) common.WriteCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) < 2+minSubKeyLen {
err := fmt.Errorf("ERR wrong number arguments for '%v' command", string(cmd.Args[0]))
return nil, err
}
if len(cmd.Args) > 2+maxSubKeyLen {
err := fmt.Errorf("ERR wrong number arguments for '%v' command", string(cmd.Args[0]))
return nil, err
}
if err := common.CheckKey(cmd.Args[1]); err != nil {
return nil, err
}
rsp, err := rebuildFirstKeyAndPropose(kvn, cmd, f)
return rsp, err
}
}
func wrapWriteCommandKV(kvn *KVNode, f common.CommandRspFunc) common.WriteCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) != 3 {
err := fmt.Errorf("ERR wrong number arguments for '%v' command", string(cmd.Args[0]))
return nil, err
}
if err := common.CheckKey(cmd.Args[1]); err != nil {
return nil, err
}
rsp, err := rebuildFirstKeyAndPropose(kvn, cmd, f)
return rsp, err
}
}
func wrapWriteCommandKVV(kvn *KVNode, f common.CommandRspFunc) common.WriteCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) != 4 {
err := fmt.Errorf("ERR wrong number arguments for '%v' command", string(cmd.Args[0]))
return nil, err
}
if err := common.CheckKey(cmd.Args[1]); err != nil {
return nil, err
}
rsp, err := rebuildFirstKeyAndPropose(kvn, cmd, f)
return rsp, err
}
}
func wrapWriteCommandKSubkeyV(kvn *KVNode, f common.CommandRspFunc) common.WriteCommandFunc {
return wrapWriteCommandKVV(kvn, f)
}
func wrapWriteCommandKSubkeyVSubkeyV(kvn *KVNode, f common.CommandRspFunc) common.WriteCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) < 4 || len(cmd.Args[2:])%2 != 0 {
err := fmt.Errorf("ERR wrong number arguments for '%v' command", string(cmd.Args[0]))
return nil, err
}
if len(cmd.Args[2:])/2 > common.MAX_BATCH_NUM {
return nil, errTooMuchBatchSize
}
if err := common.CheckKey(cmd.Args[1]); err != nil {
return nil, err
}
rsp, err := rebuildFirstKeyAndPropose(kvn, cmd, f)
return rsp, err
}
}
func wrapMergeCommand(f common.MergeCommandFunc) common.MergeCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
key, err := common.CutNamesapce(cmd.Args[1])
if err != nil {
return nil, err
}
cmd.Args[1] = key
return f(cmd)
}
}
func wrapMergeCommandKK(f common.MergeCommandFunc) common.MergeCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) < 2 {
return nil, fmt.Errorf("ERR wrong number of arguments for '%s' command", string(cmd.Args[0]))
}
if len(cmd.Args[1:]) > common.MAX_BATCH_NUM {
return nil, errTooMuchBatchSize
}
for i := 1; i < len(cmd.Args); i++ {
key, err := common.CutNamesapce(cmd.Args[i])
if err != nil {
return nil, err
}
cmd.Args[i] = key
}
return f(cmd)
}
}
func wrapWriteMergeCommandKK(kvn *KVNode, f common.MergeWriteCommandFunc) common.MergeCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) < 2 {
return nil, fmt.Errorf("ERR wrong number of arguments for '%s' command", string(cmd.Args[0]))
}
args := cmd.Args[1:]
if len(args) > common.MAX_BATCH_NUM {
return nil, errTooMuchBatchSize
}
for i, v := range args {
key, err := common.CutNamesapce(v)
if err != nil {
return nil, err
}
args[i] = key
}
ncmd := buildCommand(cmd.Args)
rsp, err := kvn.RedisPropose(ncmd.Raw)
if err != nil {
return nil, err
}
if f != nil {
return f(cmd, rsp)
}
return rsp, nil
}
}
func wrapWriteMergeCommandKVKV(kvn *KVNode, f common.MergeWriteCommandFunc) common.MergeCommandFunc {
return func(cmd redcon.Command) (interface{}, error) {
if len(cmd.Args) < 3 || len(cmd.Args[1:])%2 != 0 {
return nil, fmt.Errorf("ERR wrong number arguments for '%s' command", string(cmd.Args[0]))
}
if len(cmd.Args[1:])/2 > common.MAX_BATCH_NUM {
return nil, errTooMuchBatchSize
}
args := cmd.Args[1:]
for i, v := range args {
if i%2 != 0 {
continue
}
key, err := common.CutNamesapce(v)
if err != nil {
return nil, err
}
args[i] = key
}
ncmd := buildCommand(cmd.Args)
rsp, err := kvn.RedisPropose(ncmd.Raw)
if err != nil {
return nil, err
}
if f != nil {
return f(cmd, rsp)
}
return rsp, nil
}
}
type notifier struct {
c chan struct{}
err error
}
func newNotifier() *notifier {
return ¬ifier{
c: make(chan struct{}),
}
}
func (nc *notifier) notify(err error) {
nc.err = err
close(nc.c)
}