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feat: add Cmd.{String,Int,Float,Bool}Slice helpers and an example
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vmihailenco committed Sep 27, 2021
1 parent 329d87f commit 5d3d293
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Showing 6 changed files with 407 additions and 6 deletions.
1 change: 1 addition & 0 deletions .golangci.yml
Original file line number Diff line number Diff line change
Expand Up @@ -24,3 +24,4 @@ linters:
- errorlint
- cyclop
- forcetypeassert
- forbidigo
138 changes: 132 additions & 6 deletions command.go
Original file line number Diff line number Diff line change
Expand Up @@ -216,7 +216,11 @@ func (cmd *Cmd) Text() (string, error) {
if cmd.err != nil {
return "", cmd.err
}
switch val := cmd.val.(type) {
return toString(cmd.val)
}

func toString(val interface{}) (string, error) {
switch val := val.(type) {
case string:
return val, nil
default:
Expand Down Expand Up @@ -244,7 +248,11 @@ func (cmd *Cmd) Int64() (int64, error) {
if cmd.err != nil {
return 0, cmd.err
}
switch val := cmd.val.(type) {
return toInt64(cmd.val)
}

func toInt64(val interface{}) (int64, error) {
switch val := val.(type) {
case int64:
return val, nil
case string:
Expand All @@ -259,7 +267,11 @@ func (cmd *Cmd) Uint64() (uint64, error) {
if cmd.err != nil {
return 0, cmd.err
}
switch val := cmd.val.(type) {
return toUint64(cmd.val)
}

func toUint64(val interface{}) (uint64, error) {
switch val := val.(type) {
case int64:
return uint64(val), nil
case string:
Expand All @@ -274,7 +286,11 @@ func (cmd *Cmd) Float32() (float32, error) {
if cmd.err != nil {
return 0, cmd.err
}
switch val := cmd.val.(type) {
return toFloat32(cmd.val)
}

func toFloat32(val interface{}) (float32, error) {
switch val := val.(type) {
case int64:
return float32(val), nil
case string:
Expand All @@ -293,7 +309,11 @@ func (cmd *Cmd) Float64() (float64, error) {
if cmd.err != nil {
return 0, cmd.err
}
switch val := cmd.val.(type) {
return toFloat64(cmd.val)
}

func toFloat64(val interface{}) (float64, error) {
switch val := val.(type) {
case int64:
return float64(val), nil
case string:
Expand All @@ -308,7 +328,11 @@ func (cmd *Cmd) Bool() (bool, error) {
if cmd.err != nil {
return false, cmd.err
}
switch val := cmd.val.(type) {
return toBool(cmd.val)
}

func toBool(val interface{}) (bool, error) {
switch val := val.(type) {
case int64:
return val != 0, nil
case string:
Expand All @@ -331,6 +355,108 @@ func (cmd *Cmd) Slice() ([]interface{}, error) {
}
}

func (cmd *Cmd) StringSlice() ([]string, error) {
slice, err := cmd.Slice()
if err != nil {
return nil, err
}

ss := make([]string, len(slice))
for i, iface := range slice {
val, err := toString(iface)
if err != nil {
return nil, err
}
ss[i] = val
}
return ss, nil
}

func (cmd *Cmd) Int64Slice() ([]int64, error) {
slice, err := cmd.Slice()
if err != nil {
return nil, err
}

nums := make([]int64, len(slice))
for i, iface := range slice {
val, err := toInt64(iface)
if err != nil {
return nil, err
}
nums[i] = val
}
return nums, nil
}

func (cmd *Cmd) Uint64Slice() ([]uint64, error) {
slice, err := cmd.Slice()
if err != nil {
return nil, err
}

nums := make([]uint64, len(slice))
for i, iface := range slice {
val, err := toUint64(iface)
if err != nil {
return nil, err
}
nums[i] = val
}
return nums, nil
}

func (cmd *Cmd) Float32Slice() ([]float32, error) {
slice, err := cmd.Slice()
if err != nil {
return nil, err
}

floats := make([]float32, len(slice))
for i, iface := range slice {
val, err := toFloat32(iface)
if err != nil {
return nil, err
}
floats[i] = val
}
return floats, nil
}

func (cmd *Cmd) Float64Slice() ([]float64, error) {
slice, err := cmd.Slice()
if err != nil {
return nil, err
}

floats := make([]float64, len(slice))
for i, iface := range slice {
val, err := toFloat64(iface)
if err != nil {
return nil, err
}
floats[i] = val
}
return floats, nil
}

func (cmd *Cmd) BoolSlice() ([]bool, error) {
slice, err := cmd.Slice()
if err != nil {
return nil, err
}

bools := make([]bool, len(slice))
for i, iface := range slice {
val, err := toBool(iface)
if err != nil {
return nil, err
}
bools[i] = val
}
return bools, nil
}

func (cmd *Cmd) readReply(rd *proto.Reader) (err error) {
cmd.val, err = rd.ReadReply(sliceParser)
return err
Expand Down
12 changes: 12 additions & 0 deletions example/redis-bloom/README.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
# RedisBloom example for go-redis

This is an example for
[Bloom, Cuckoo, Count-Min, Top-K](https://redis.uptrace.dev/guide/bloom-cuckoo-count-min-top-k.html)
article.

To run it, you need to compile and install
[RedisBloom](https://oss.redis.com/redisbloom/Quick_Start/#building) module:

```shell
go run .
```
7 changes: 7 additions & 0 deletions example/redis-bloom/go.mod
Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
module github.com/go-redis/redis/example/redis-bloom

go 1.14

replace github.com/go-redis/redis/v8 => ../..

require github.com/go-redis/redis/v8 v8.11.3
100 changes: 100 additions & 0 deletions example/redis-bloom/go.sum
Original file line number Diff line number Diff line change
@@ -0,0 +1,100 @@
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
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github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
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golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
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google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
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