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Merge pull request #1 from eko/cache-memcached
feat(store): added memcache support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| package store | ||
|
|
||
| import ( | ||
| "errors" | ||
| "time" | ||
|
|
||
| "github.com/bradfitz/gomemcache/memcache" | ||
| ) | ||
|
|
||
| // MemcacheClientInterface represents a bradfitz/gomemcache client | ||
| type MemcacheClientInterface interface { | ||
| Get(key string) (item *memcache.Item, err error) | ||
| Set(item *memcache.Item) error | ||
| } | ||
|
|
||
| const ( | ||
| MemcacheType = "memcache" | ||
| ) | ||
|
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| // MemcacheStore is a store for Redis | ||
| type MemcacheStore struct { | ||
| client MemcacheClientInterface | ||
| } | ||
|
|
||
| // NewMemcache creates a new store to Memcache instance(s) | ||
| func NewMemcache(client MemcacheClientInterface) *MemcacheStore { | ||
| return &MemcacheStore{ | ||
| client: client, | ||
| } | ||
| } | ||
|
|
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| // Get returns data stored from a given key | ||
| func (s *MemcacheStore) Get(key interface{}) (interface{}, error) { | ||
| item, err := s.client.Get(key.(string)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if item == nil { | ||
| return nil, errors.New("Unable to retrieve data from memcache") | ||
| } | ||
|
|
||
| return item.Value, err | ||
| } | ||
|
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| // Set defines data in Redis for given key idntifier | ||
| func (s *MemcacheStore) Set(key interface{}, value interface{}, expiration time.Duration) error { | ||
| item := &memcache.Item{ | ||
| Key: key.(string), | ||
| Value: value.([]byte), | ||
| Expiration: int32(expiration.Seconds()), | ||
| } | ||
|
|
||
| return s.client.Set(item) | ||
| } | ||
|
|
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| // GetType returns the store type | ||
| func (s *MemcacheStore) GetType() string { | ||
| return MemcacheType | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| package store | ||
|
|
||
| import ( | ||
| "testing" | ||
| "time" | ||
|
|
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| "github.com/bradfitz/gomemcache/memcache" | ||
| mocksStore "github.com/eko/gache/test/mocks/store" | ||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
|
||
| func TestNewMemcache(t *testing.T) { | ||
| // Given | ||
| client := &mocksStore.MemcacheClientInterface{} | ||
|
|
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| // When | ||
| store := NewMemcache(client) | ||
|
|
||
| // Then | ||
| assert.IsType(t, new(MemcacheStore), store) | ||
| assert.Equal(t, client, store.client) | ||
| } | ||
|
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| func TestMemcacheGet(t *testing.T) { | ||
| // Given | ||
| cacheKey := "my-key" | ||
| cacheValue := []byte("my-cache-value") | ||
|
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| client := &mocksStore.MemcacheClientInterface{} | ||
| client.On("Get", cacheKey).Return(&memcache.Item{ | ||
| Value: cacheValue, | ||
| }, nil) | ||
|
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| store := NewMemcache(client) | ||
|
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| // When | ||
| value, err := store.Get(cacheKey) | ||
|
|
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| // Then | ||
| assert.Nil(t, err) | ||
| assert.Equal(t, cacheValue, value) | ||
| } | ||
|
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| func TestMemcacheSet(t *testing.T) { | ||
| // Given | ||
| cacheKey := "my-key" | ||
| cacheValue := []byte("my-cache-value") | ||
| expiration := 5 * time.Second | ||
|
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| client := &mocksStore.MemcacheClientInterface{} | ||
| client.On("Set", &memcache.Item{ | ||
| Key: cacheKey, | ||
| Value: cacheValue, | ||
| Expiration: int32(expiration.Seconds()), | ||
| }).Return(nil) | ||
|
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| store := NewMemcache(client) | ||
|
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| // When | ||
| err := store.Set(cacheKey, cacheValue, expiration) | ||
|
|
||
| // Then | ||
| assert.Nil(t, err) | ||
| } | ||
|
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| func TestMemcacheGetType(t *testing.T) { | ||
| // Given | ||
| client := &mocksStore.MemcacheClientInterface{} | ||
|
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| store := NewMemcache(client) | ||
|
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||
| // When - Then | ||
| assert.Equal(t, MemcacheType, store.GetType()) | ||
| } |
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