// Create a bucket.
func (s *Storage) Create(name string, capacity uint, rate time.Duration) (leakybucket.Bucket, error) {
conn := s.pool.Get()
defer conn.Close()
if count, err := redis.Uint64(conn.Do("GET", name)); err != nil {
if err != redis.ErrNil {
return nil, err
}
// return a standard bucket if key was not found
return &bucket{
name: name,
capacity: capacity,
remaining: capacity,
reset: time.Now().Add(rate),
rate: rate,
pool: s.pool,
}, nil
} else if ttl, err := redis.Int64(conn.Do("PTTL", name)); err != nil {
return nil, err
} else {
b := &bucket{
name: name,
capacity: capacity,
remaining: capacity - min(capacity, uint(count)),
reset: time.Now().Add(time.Duration(ttl * millisecond)),
rate: rate,
pool: s.pool,
}
return b, nil
}
}
// scanUint converts a reply from redis into a uint and scans the value into v.
func scanUint(reply interface{}, v *uint) error {
if v == nil {
return fmt.Errorf("jobs: In scanUint: argument v was nil")
}
val, err := redis.Uint64(reply, nil)
if err != nil {
return fmt.Errorf("jobs: In scanUint: Could not convert %v of type %T to uint.", reply, reply)
}
(*v) = uint(val)
return nil
}
func (km *KeyManager) getNewIdIdx(idx int) (uint64, error) {
conn := km.idRedis[idx].Get()
defer conn.Close()
r, err := conn.Do("INCR", km.idKey)
if err != nil {
return 0, err
}
id, err := redis.Uint64(r, err)
if err != nil {
return 0, err
}
return id*2 + uint64(idx), nil
}
// Add to the bucket.
func (b *bucket) Add(amount uint) (leakybucket.BucketState, error) {
conn := b.pool.Get()
defer conn.Close()
if count, err := redis.Uint64(conn.Do("GET", b.name)); err != nil {
// handle the key not being set
if err == redis.ErrNil {
b.remaining = b.capacity
} else {
return b.State(), err
}
} else {
b.remaining = b.capacity - min(uint(count), b.capacity)
}
if amount > b.remaining {
b.updateOldReset()
return b.State(), leakybucket.ErrorFull
}
// Go y u no have Milliseconds method? Why only Seconds and Nanoseconds?
expiry := int(b.rate.Nanoseconds() / millisecond)
count, err := redis.Uint64(conn.Do("INCRBY", b.name, amount))
if err != nil {
return b.State(), err
} else if uint(count) == amount {
if _, err := conn.Do("PEXPIRE", b.name, expiry); err != nil {
return b.State(), err
}
}
b.updateOldReset()
// Ensure we can't overflow
b.remaining = b.capacity - min(uint(count), b.capacity)
return b.State(), nil
}
func LoadFrame(conn redis.Conn, header *SBFHeader, id uint16) (*SBFFrame, error) {
// key := SBF_NAME + ":count:" + header.Refer + ":1"
key := fmt.Sprintf("%s:count:%s:%d", SBF_NAME, header.Refer, id)
frame := new(SBFFrame)
frame.Key = key
frame.Refer = header.Refer
frame.Count = 0
frame.frameDataRange(header, id)
if count, err := redis.Uint64(conn.Do("GET", key)); err == nil {
frame.Count = uint32(count)
} else if err != redis.ErrNil {
return nil, err
}
return frame, nil
}
// object must be a pointer to a settable object
func (c *redisStore) save(mv *metaValue) error {
if mv.getPrimaryKey() == 0 {
keyName := fmt.Sprintf("%v:%v", c.appPrefix, mv.mt.t.Name())
newId, err := redis.Uint64(c.conn.Do("INCR", keyName))
if err != nil {
return err
}
mv.setPrimaryKey(newId)
}
key := mv.getKeyString(c.appPrefix)
args := []interface{}{key}
v := mv.p.Elem()
for i := 0; i < mv.mt.t.NumField(); i++ {
if mv.mt.id == i {
continue
}
name := mv.mt.t.Field(i).Name
value := v.Field(i).Interface()
if mv.mt.t.Field(i).Type == timeType {
timev, ok := value.(time.Time)
if !ok {
return newInternalError(nil, "Shouldn't happen.")
}
bs, err := timev.MarshalText()
if err != nil {
return newInternalError(err, "Shouldn't happen.")
}
value = bs
}
args = append(args, name, value)
}
_, err := c.conn.Do("HMSET", args...)
if err != nil {
return err
}
fmt.Printf("Saved %v to %v.\n", args, key)
return nil
}
// Count counts the number of models that would be returned by the query without
// actually retreiving the models themselves. Count will also return the first
// error that occured during the lifetime of the query object (if any).
// Otherwise, the second return value will be nil.
func (q *Query) Count() (uint, error) {
if q.hasError() {
return 0, q.err
}
if !q.hasFilters() {
// Just return the number of ids in the all index set
conn := q.pool.NewConn()
defer conn.Close()
count64, err := redis.Uint64(conn.Do("SCARD", q.collection.spec.indexKey()))
if err != nil {
return 0, nil
}
count := uint(count64)
// Apply math to take into account limit and offset
switch {
case !q.hasLimit() && !q.hasOffset():
return count, nil
default:
if q.hasOffset() {
count = count - q.offset
}
if q.hasLimit() && q.limit < count {
count = q.limit
}
return count, nil
}
} else {
// If the query has filters, it is difficult to do any optimizations.
// Instead we'll just count the number of ids that match the query
// criteria.
ids, err := q.Ids()
if err != nil {
return 0, err
}
return uint(len(ids)), nil
}
}
}
}
// replyConverter represents a function which is capable of converting a redis
// reply to some other type.
type replyConverter func(interface{}) (interface{}, error)
var (
int64Converter replyConverter = func(in interface{}) (interface{}, error) {
return redis.Int64(in, nil)
}
intConverter replyConverter = func(in interface{}) (interface{}, error) {
return redis.Int(in, nil)
}
uintConverter replyConverter = func(in interface{}) (interface{}, error) {
v, err := redis.Uint64(in, nil)
if err != nil {
return nil, err
}
return uint(v), nil
}
stringConverter replyConverter = func(in interface{}) (interface{}, error) {
return redis.String(in, nil)
}
bytesConverter replyConverter = func(in interface{}) (interface{}, error) {
return redis.Bytes(in, nil)
}
)
// expectSetContains sets an error via t.Errorf if member is not in the set
func expectSetContains(t *testing.T, setName string, member string) {
ve(redis.Values(nil, nil)),
ve([]interface{}(nil), redis.ErrNil),
},
{
"float64(1.0)",
ve(redis.Float64([]byte("1.0"), nil)),
ve(float64(1.0), nil),
},
{
"float64(nil)",
ve(redis.Float64(nil, nil)),
ve(float64(0.0), redis.ErrNil),
},
{
"uint64(1)",
ve(redis.Uint64(int64(1), nil)),
ve(uint64(1), nil),
},
{
"uint64(-1)",
ve(redis.Uint64(int64(-1), nil)),
ve(uint64(0), redis.ErrNegativeInt),
},
}
func TestReply(t *testing.T) {
for _, rt := range replyTests {
if rt.actual.err != rt.expected.err {
t.Errorf("%s returned err %v, want %v", rt.name, rt.actual.err, rt.expected.err)
continue
}
return redis.Int(r, e)
},
"int64": func(r interface{}, e error) (interface{}, error) {
return redis.Int64(r, e)
},
"ints": func(r interface{}, e error) (interface{}, error) {
return redis.Ints(r, e)
},
"string": func(r interface{}, e error) (interface{}, error) {
return redis.String(r, e)
},
"strings": func(r interface{}, e error) (interface{}, error) {
return redis.Strings(r, e)
},
"uint64": func(r interface{}, e error) (interface{}, error) {
return redis.Uint64(r, e)
},
"values": func(r interface{}, e error) (interface{}, error) {
return redis.Values(r, e)
},
"stringmap": func(r interface{}, e error) (interface{}, error) {
return redis.StringMap(r, e)
},
}
)
func (r *RedisTaskConfigQuery) Validate() (err error) {
for ru, _ := range redisunderstands {
if r.Type == ru {
return nil
}
func (*RedisStore) Uint64(reply interface{}, err error) (uint64, error) {
return redis.Uint64(reply, err)
}
func (v *RedisValue) Uint64() (uint64, error) {
return redis.Uint64(v.Raw, v.Err)
}