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- package redis
-
- import (
- "context"
- "time"
- )
-
- type StringCmdable interface {
- Append(ctx context.Context, key, value string) *IntCmd
- Decr(ctx context.Context, key string) *IntCmd
- DecrBy(ctx context.Context, key string, decrement int64) *IntCmd
- Get(ctx context.Context, key string) *StringCmd
- GetRange(ctx context.Context, key string, start, end int64) *StringCmd
- GetSet(ctx context.Context, key string, value interface{}) *StringCmd
- GetEx(ctx context.Context, key string, expiration time.Duration) *StringCmd
- GetDel(ctx context.Context, key string) *StringCmd
- Incr(ctx context.Context, key string) *IntCmd
- IncrBy(ctx context.Context, key string, value int64) *IntCmd
- IncrByFloat(ctx context.Context, key string, value float64) *FloatCmd
- LCS(ctx context.Context, q *LCSQuery) *LCSCmd
- MGet(ctx context.Context, keys ...string) *SliceCmd
- MSet(ctx context.Context, values ...interface{}) *StatusCmd
- MSetNX(ctx context.Context, values ...interface{}) *BoolCmd
- Set(ctx context.Context, key string, value interface{}, expiration time.Duration) *StatusCmd
- SetArgs(ctx context.Context, key string, value interface{}, a SetArgs) *StatusCmd
- SetEx(ctx context.Context, key string, value interface{}, expiration time.Duration) *StatusCmd
- SetNX(ctx context.Context, key string, value interface{}, expiration time.Duration) *BoolCmd
- SetXX(ctx context.Context, key string, value interface{}, expiration time.Duration) *BoolCmd
- SetRange(ctx context.Context, key string, offset int64, value string) *IntCmd
- StrLen(ctx context.Context, key string) *IntCmd
- }
-
- func (c cmdable) Append(ctx context.Context, key, value string) *IntCmd {
- cmd := NewIntCmd(ctx, "append", key, value)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) Decr(ctx context.Context, key string) *IntCmd {
- cmd := NewIntCmd(ctx, "decr", key)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) DecrBy(ctx context.Context, key string, decrement int64) *IntCmd {
- cmd := NewIntCmd(ctx, "decrby", key, decrement)
- _ = c(ctx, cmd)
- return cmd
- }
-
- // Get Redis `GET key` command. It returns redis.Nil error when key does not exist.
- func (c cmdable) Get(ctx context.Context, key string) *StringCmd {
- cmd := NewStringCmd(ctx, "get", key)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) GetRange(ctx context.Context, key string, start, end int64) *StringCmd {
- cmd := NewStringCmd(ctx, "getrange", key, start, end)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) GetSet(ctx context.Context, key string, value interface{}) *StringCmd {
- cmd := NewStringCmd(ctx, "getset", key, value)
- _ = c(ctx, cmd)
- return cmd
- }
-
- // GetEx An expiration of zero removes the TTL associated with the key (i.e. GETEX key persist).
- // Requires Redis >= 6.2.0.
- func (c cmdable) GetEx(ctx context.Context, key string, expiration time.Duration) *StringCmd {
- args := make([]interface{}, 0, 4)
- args = append(args, "getex", key)
- if expiration > 0 {
- if usePrecise(expiration) {
- args = append(args, "px", formatMs(ctx, expiration))
- } else {
- args = append(args, "ex", formatSec(ctx, expiration))
- }
- } else if expiration == 0 {
- args = append(args, "persist")
- }
-
- cmd := NewStringCmd(ctx, args...)
- _ = c(ctx, cmd)
- return cmd
- }
-
- // GetDel redis-server version >= 6.2.0.
- func (c cmdable) GetDel(ctx context.Context, key string) *StringCmd {
- cmd := NewStringCmd(ctx, "getdel", key)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) Incr(ctx context.Context, key string) *IntCmd {
- cmd := NewIntCmd(ctx, "incr", key)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) IncrBy(ctx context.Context, key string, value int64) *IntCmd {
- cmd := NewIntCmd(ctx, "incrby", key, value)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) IncrByFloat(ctx context.Context, key string, value float64) *FloatCmd {
- cmd := NewFloatCmd(ctx, "incrbyfloat", key, value)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) LCS(ctx context.Context, q *LCSQuery) *LCSCmd {
- cmd := NewLCSCmd(ctx, q)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) MGet(ctx context.Context, keys ...string) *SliceCmd {
- args := make([]interface{}, 1+len(keys))
- args[0] = "mget"
- for i, key := range keys {
- args[1+i] = key
- }
- cmd := NewSliceCmd(ctx, args...)
- _ = c(ctx, cmd)
- return cmd
- }
-
- // MSet is like Set but accepts multiple values:
- // - MSet("key1", "value1", "key2", "value2")
- // - MSet([]string{"key1", "value1", "key2", "value2"})
- // - MSet(map[string]interface{}{"key1": "value1", "key2": "value2"})
- // - MSet(struct), For struct types, see HSet description.
- func (c cmdable) MSet(ctx context.Context, values ...interface{}) *StatusCmd {
- args := make([]interface{}, 1, 1+len(values))
- args[0] = "mset"
- args = appendArgs(args, values)
- cmd := NewStatusCmd(ctx, args...)
- _ = c(ctx, cmd)
- return cmd
- }
-
- // MSetNX is like SetNX but accepts multiple values:
- // - MSetNX("key1", "value1", "key2", "value2")
- // - MSetNX([]string{"key1", "value1", "key2", "value2"})
- // - MSetNX(map[string]interface{}{"key1": "value1", "key2": "value2"})
- // - MSetNX(struct), For struct types, see HSet description.
- func (c cmdable) MSetNX(ctx context.Context, values ...interface{}) *BoolCmd {
- args := make([]interface{}, 1, 1+len(values))
- args[0] = "msetnx"
- args = appendArgs(args, values)
- cmd := NewBoolCmd(ctx, args...)
- _ = c(ctx, cmd)
- return cmd
- }
-
- // Set Redis `SET key value [expiration]` command.
- // Use expiration for `SETEx`-like behavior.
- //
- // Zero expiration means the key has no expiration time.
- // KeepTTL is a Redis KEEPTTL option to keep existing TTL, it requires your redis-server version >= 6.0,
- // otherwise you will receive an error: (error) ERR syntax error.
- func (c cmdable) Set(ctx context.Context, key string, value interface{}, expiration time.Duration) *StatusCmd {
- args := make([]interface{}, 3, 5)
- args[0] = "set"
- args[1] = key
- args[2] = value
- if expiration > 0 {
- if usePrecise(expiration) {
- args = append(args, "px", formatMs(ctx, expiration))
- } else {
- args = append(args, "ex", formatSec(ctx, expiration))
- }
- } else if expiration == KeepTTL {
- args = append(args, "keepttl")
- }
-
- cmd := NewStatusCmd(ctx, args...)
- _ = c(ctx, cmd)
- return cmd
- }
-
- // SetArgs provides arguments for the SetArgs function.
- type SetArgs struct {
- // Mode can be `NX` or `XX` or empty.
- Mode string
-
- // Zero `TTL` or `Expiration` means that the key has no expiration time.
- TTL time.Duration
- ExpireAt time.Time
-
- // When Get is true, the command returns the old value stored at key, or nil when key did not exist.
- Get bool
-
- // KeepTTL is a Redis KEEPTTL option to keep existing TTL, it requires your redis-server version >= 6.0,
- // otherwise you will receive an error: (error) ERR syntax error.
- KeepTTL bool
- }
-
- // SetArgs supports all the options that the SET command supports.
- // It is the alternative to the Set function when you want
- // to have more control over the options.
- func (c cmdable) SetArgs(ctx context.Context, key string, value interface{}, a SetArgs) *StatusCmd {
- args := []interface{}{"set", key, value}
-
- if a.KeepTTL {
- args = append(args, "keepttl")
- }
-
- if !a.ExpireAt.IsZero() {
- args = append(args, "exat", a.ExpireAt.Unix())
- }
- if a.TTL > 0 {
- if usePrecise(a.TTL) {
- args = append(args, "px", formatMs(ctx, a.TTL))
- } else {
- args = append(args, "ex", formatSec(ctx, a.TTL))
- }
- }
-
- if a.Mode != "" {
- args = append(args, a.Mode)
- }
-
- if a.Get {
- args = append(args, "get")
- }
-
- cmd := NewStatusCmd(ctx, args...)
- _ = c(ctx, cmd)
- return cmd
- }
-
- // SetEx Redis `SETEx key expiration value` command.
- func (c cmdable) SetEx(ctx context.Context, key string, value interface{}, expiration time.Duration) *StatusCmd {
- cmd := NewStatusCmd(ctx, "setex", key, formatSec(ctx, expiration), value)
- _ = c(ctx, cmd)
- return cmd
- }
-
- // SetNX Redis `SET key value [expiration] NX` command.
- //
- // Zero expiration means the key has no expiration time.
- // KeepTTL is a Redis KEEPTTL option to keep existing TTL, it requires your redis-server version >= 6.0,
- // otherwise you will receive an error: (error) ERR syntax error.
- func (c cmdable) SetNX(ctx context.Context, key string, value interface{}, expiration time.Duration) *BoolCmd {
- var cmd *BoolCmd
- switch expiration {
- case 0:
- // Use old `SETNX` to support old Redis versions.
- cmd = NewBoolCmd(ctx, "setnx", key, value)
- case KeepTTL:
- cmd = NewBoolCmd(ctx, "set", key, value, "keepttl", "nx")
- default:
- if usePrecise(expiration) {
- cmd = NewBoolCmd(ctx, "set", key, value, "px", formatMs(ctx, expiration), "nx")
- } else {
- cmd = NewBoolCmd(ctx, "set", key, value, "ex", formatSec(ctx, expiration), "nx")
- }
- }
-
- _ = c(ctx, cmd)
- return cmd
- }
-
- // SetXX Redis `SET key value [expiration] XX` command.
- //
- // Zero expiration means the key has no expiration time.
- // KeepTTL is a Redis KEEPTTL option to keep existing TTL, it requires your redis-server version >= 6.0,
- // otherwise you will receive an error: (error) ERR syntax error.
- func (c cmdable) SetXX(ctx context.Context, key string, value interface{}, expiration time.Duration) *BoolCmd {
- var cmd *BoolCmd
- switch expiration {
- case 0:
- cmd = NewBoolCmd(ctx, "set", key, value, "xx")
- case KeepTTL:
- cmd = NewBoolCmd(ctx, "set", key, value, "keepttl", "xx")
- default:
- if usePrecise(expiration) {
- cmd = NewBoolCmd(ctx, "set", key, value, "px", formatMs(ctx, expiration), "xx")
- } else {
- cmd = NewBoolCmd(ctx, "set", key, value, "ex", formatSec(ctx, expiration), "xx")
- }
- }
-
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) SetRange(ctx context.Context, key string, offset int64, value string) *IntCmd {
- cmd := NewIntCmd(ctx, "setrange", key, offset, value)
- _ = c(ctx, cmd)
- return cmd
- }
-
- func (c cmdable) StrLen(ctx context.Context, key string) *IntCmd {
- cmd := NewIntCmd(ctx, "strlen", key)
- _ = c(ctx, cmd)
- return cmd
- }
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