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Feat: Add HStrlen Command.

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This commit is contained in:
Eriri
2022-05-31 20:13:33 +08:00
committed by finley
parent 951a844439
commit bde2c8ccbe
5 changed files with 31 additions and 4 deletions
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1
cluster/router.go
View File

@@ -60,6 +60,7 @@ func makeRouter() map[string]CmdFunc {
routerMap["hexists"] = defaultFunc
routerMap["hdel"] = defaultFunc
routerMap["hlen"] = defaultFunc
routerMap["hstrlen"] = defaultFunc
routerMap["hmget"] = defaultFunc
routerMap["hmset"] = defaultFunc
routerMap["hkeys"] = defaultFunc

1
commands.md
View File

@@ -53,6 +53,7 @@
- hexists
- hdel
- hlen
- hstrlen
- hmget
- hmset
- hkeys

23
database/hash.go
View File

@@ -187,6 +187,28 @@ func execHLen(db *DB, args [][]byte) redis.Reply {
return protocol.MakeIntReply(int64(dict.Len()))
}
// execHStrlen Returns the string length of the value associated with field in the hash stored at key.
// If the key or the field do not exist, 0 is returned.
func execHStrlen(db *DB, args [][]byte) redis.Reply {
key := string(args[0])
field := string(args[1])
dict, errReply := db.getAsDict(key)
if errReply != nil {
return errReply
}
if dict == nil {
return protocol.MakeIntReply(0)
}
raw, exists := dict.Get(field)
if exists {
value, _ := raw.([]byte)
return protocol.MakeIntReply(int64(len(value)))
}
return protocol.MakeIntReply(0)
}
// execHMSet sets multi fields in hash table
func execHMSet(db *DB, args [][]byte) redis.Reply {
// parse args
@@ -482,6 +504,7 @@ func init() {
RegisterCommand("HExists", execHExists, readFirstKey, nil, 3)
RegisterCommand("HDel", execHDel, writeFirstKey, undoHDel, -3)
RegisterCommand("HLen", execHLen, readFirstKey, nil, 2)
RegisterCommand("HStrlen", execHStrlen, readFirstKey, nil, 3)
RegisterCommand("HMSet", execHMSet, writeFirstKey, undoHMSet, -4)
RegisterCommand("HMGet", execHMGet, readFirstKey, nil, -3)
RegisterCommand("HGet", execHGet, readFirstKey, nil, -3)

7
database/hash_test.go
View File

@@ -26,7 +26,7 @@ func TestHSet(t *testing.T) {
}
}
// test hget and hexists
// test hget, hexists and hstrlen
for field, v := range values {
actual := testDB.Exec(nil, utils.ToCmdLine("hget", key, field))
expected := protocol.MakeBulkReply(v)
@@ -37,6 +37,11 @@ func TestHSet(t *testing.T) {
if intResult, _ := actual.(*protocol.IntReply); intResult.Code != int64(1) {
t.Error(fmt.Sprintf("expected %d, actually %d", 1, intResult.Code))
}
actual = testDB.Exec(nil, utils.ToCmdLine("hstrlen", key, field))
if intResult, _ := actual.(*protocol.IntReply); intResult.Code != int64(len(v)) {
t.Error(fmt.Sprintf("expected %d, actually %d", int64(len(v)), intResult.Code))
}
}
// test hlen

3
go.sum
View File

@@ -1,7 +1,6 @@
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/emirpasic/gods v1.12.0 h1:QAUIPSaCu4G+POclxeqb3F+WPpdKqFGlw36+yOzGlrg=
github.com/emirpasic/gods v1.12.0/go.mod h1:YfzfFFoVP/catgzJb4IKIqXjX78Ha8FMSDh3ymbK86o=
github.com/fortytw2/leaktest v1.3.0 h1:u8491cBMTQ8ft8aeV+adlcytMZylmA5nnwwkRZjI8vw=
github.com/fortytw2/leaktest v1.3.0/go.mod h1:jDsjWgpAGjm2CA7WthBh/CdZYEPF31XHquHwclZch5g=
@@ -13,11 +12,9 @@ github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZb
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/shopspring/decimal v1.2.0 h1:abSATXmQEYyShuxI4/vyW3tV1MrKAJzCZ/0zLUXYbsQ=
github.com/shopspring/decimal v1.2.0/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
github.com/stretchr/objx v0.1.0 h1:4G4v2dO3VZwixGIRoQ5Lfboy6nUhCyYzaqnIAPPhYs4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.2.5 h1:ymVxjfMaHvXD8RqPRmzHHsB3VvucivSkIAvJFDI5O3c=