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Merge pull request #9 from vinted/hackaton_liu_redis_api
Caching API
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| package redis | ||
|
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| import ( | ||
| "time" | ||
|
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| gredis "github.com/redis/go-redis/v9" | ||
| "golang.org/x/net/context" | ||
| ) | ||
|
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| const defaultTimeout = 15 * time.Second | ||
| const defaultRecordTtl = 5 * time.Minute | ||
|
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| type Cache struct { | ||
| client *gredis.Client | ||
| } | ||
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| func NewCache() *Cache { | ||
| opts := &gredis.Options{ | ||
| Addr: "localhost:6379", | ||
| Password: "", | ||
| DB: 0, | ||
| } | ||
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| client := gredis.NewClient(opts) | ||
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| return &Cache{ | ||
| client: client, | ||
| } | ||
| } | ||
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| func (c *Cache) Get(key string) (string, error) { | ||
| ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout) | ||
| defer cancel() | ||
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| return c.client.Get(ctx, key).Result() | ||
| } | ||
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| func (c *Cache) Set(key, value string) error { | ||
| ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout) | ||
| defer cancel() | ||
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| return c.client.Set(ctx, key, value, defaultRecordTtl).Err() | ||
| } | ||
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| func (c *Cache) Delete(key ...string) error { | ||
| ctx, cancel := context.WithTimeout(context.Background(), defaultTimeout) | ||
| defer cancel() | ||
|
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| return c.client.Del(ctx, key...).Err() | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| package redis_test | ||
|
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| import ( | ||
| "testing" | ||
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| "vitess.io/vitess/go/cache/redis" | ||
| ) | ||
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| func Test_RedisStringSet(t *testing.T) { | ||
| t.Skip("E2E not set up") | ||
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| cache := redis.NewCache() | ||
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| if err := cache.Set("hi", "mom"); err != nil { | ||
| t.Error(err) | ||
| } | ||
|
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| val, err := cache.Get("hi") | ||
| if err != nil { | ||
| t.Error(err) | ||
| } | ||
|
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| if val != "mom" { | ||
| t.Error("Value is not \"mom\"") | ||
| } | ||
| } | ||
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| func Test_RedisStringSetAndDel(t *testing.T) { | ||
| t.Skip("E2E not set up") | ||
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| cache := redis.NewCache() | ||
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| if err := cache.Set("hi", "mom"); err != nil { | ||
| t.Error(err) | ||
| } | ||
|
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| val, err := cache.Get("hi") | ||
| if err != nil || len(val) == 0 { | ||
| t.Error(err) | ||
| } | ||
|
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| if err = cache.Delete("hi"); err != nil { | ||
| t.Error(err) | ||
| } | ||
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| val_ex, err := cache.Get("hi") | ||
| if err == nil || len(val_ex) != 0 { | ||
| t.Error(err) | ||
| } | ||
| } | ||
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| func Test_RedisOperationsWithKeyGen(t *testing.T) { | ||
| t.Skip("E2E not set up") | ||
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| cache := redis.NewCache() | ||
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| cols := []string{"id", "user_id"} | ||
| vtgs := []string{"1323", "4362"} | ||
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| key := redis.GenerateCacheKey(append(cols, vtgs...)...) | ||
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| if err := cache.Set(key, "mom"); err != nil { | ||
| t.Error(err) | ||
| } | ||
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| val, err := cache.Get(key) | ||
| if err != nil || len(val) == 0 { | ||
| t.Error(err) | ||
| } | ||
|
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| if err = cache.Delete(key); err != nil { | ||
| t.Error(err) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,7 @@ | ||
| package redis | ||
|
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| import "strings" | ||
|
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| func GenerateCacheKey(args ...string) string { | ||
| return strings.Join(args, "_") | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| package redis_test | ||
|
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| import ( | ||
| "strings" | ||
| "testing" | ||
|
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| "vitess.io/vitess/go/cache/redis" | ||
| ) | ||
|
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| func Test_GenerateCacheKey_GeneratesACacheKey(t *testing.T) { | ||
| expected := "id_user_id_4_5" | ||
| key := redis.GenerateCacheKey("id", "user_id", "4", "5") | ||
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| if strings.Compare(expected, key) != 0 { | ||
| t.Error() | ||
| } | ||
| } |