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author | Christopher Speller <crspeller@gmail.com> | 2016-05-12 15:08:58 -0400 |
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committer | Christopher Speller <crspeller@gmail.com> | 2016-05-12 16:37:29 -0400 |
commit | 84d2482ddbff9564c9ad75b2d30af66e3ddfd44d (patch) | |
tree | 8bfa567d2b6381f4a996ada2deff8a16aa85a3ac /Godeps/_workspace/src/gopkg.in/throttled/throttled.v1/store/redis.go | |
parent | d1efb66ad7b017f0fbfe6f0c20843b30f396e504 (diff) | |
download | chat-84d2482ddbff9564c9ad75b2d30af66e3ddfd44d.tar.gz chat-84d2482ddbff9564c9ad75b2d30af66e3ddfd44d.tar.bz2 chat-84d2482ddbff9564c9ad75b2d30af66e3ddfd44d.zip |
Updating go depencancies. Switching to go1.6 vendoring (#2949)
Diffstat (limited to 'Godeps/_workspace/src/gopkg.in/throttled/throttled.v1/store/redis.go')
-rw-r--r-- | Godeps/_workspace/src/gopkg.in/throttled/throttled.v1/store/redis.go | 85 |
1 files changed, 0 insertions, 85 deletions
diff --git a/Godeps/_workspace/src/gopkg.in/throttled/throttled.v1/store/redis.go b/Godeps/_workspace/src/gopkg.in/throttled/throttled.v1/store/redis.go deleted file mode 100644 index b089f9f4e..000000000 --- a/Godeps/_workspace/src/gopkg.in/throttled/throttled.v1/store/redis.go +++ /dev/null @@ -1,85 +0,0 @@ -package store - -import ( - "time" - - "github.com/garyburd/redigo/redis" - "gopkg.in/throttled/throttled.v1" -) - -// redisStore implements a Redis-based store. -type redisStore struct { - pool *redis.Pool - prefix string - db int -} - -// NewRedisStore creates a new Redis-based store, using the provided pool to get its -// connections. The keys will have the specified keyPrefix, which may be an empty string, -// and the database index specified by db will be selected to store the keys. -// -func NewRedisStore(pool *redis.Pool, keyPrefix string, db int) throttled.Store { - return &redisStore{ - pool: pool, - prefix: keyPrefix, - db: db, - } -} - -// Incr increments the specified key. If the key did not exist, it sets it to 1 -// and sets it to expire after the number of seconds specified by window. -// -// It returns the new count value and the number of remaining seconds, or an error -// if the operation fails. -func (r *redisStore) Incr(key string, window time.Duration) (int, int, error) { - conn := r.pool.Get() - defer conn.Close() - if err := selectDB(r.db, conn); err != nil { - return 0, 0, err - } - // Atomically increment and read the TTL. - conn.Send("MULTI") - conn.Send("INCR", r.prefix+key) - conn.Send("TTL", r.prefix+key) - vals, err := redis.Values(conn.Do("EXEC")) - if err != nil { - conn.Do("DISCARD") - return 0, 0, err - } - var cnt, ttl int - if _, err = redis.Scan(vals, &cnt, &ttl); err != nil { - return 0, 0, err - } - // If there was no TTL set, then this is a newly created key (INCR creates the key - // if it didn't exist), so set it to expire. - if ttl == -1 { - ttl = int(window.Seconds()) - _, err = conn.Do("EXPIRE", r.prefix+key, ttl) - if err != nil { - return 0, 0, err - } - } - return cnt, ttl, nil -} - -// Reset sets the value of the key to 1, and resets its time window. -func (r *redisStore) Reset(key string, window time.Duration) error { - conn := r.pool.Get() - defer conn.Close() - if err := selectDB(r.db, conn); err != nil { - return err - } - _, err := redis.String(conn.Do("SET", r.prefix+key, "1", "EX", int(window.Seconds()), "NX")) - return err -} - -// Select the specified database index. -func selectDB(db int, conn redis.Conn) error { - // Select the specified database - if db > 0 { - if _, err := redis.String(conn.Do("SELECT", db)); err != nil { - return err - } - } - return nil -} |