77 lines
1.7 KiB
Go
77 lines
1.7 KiB
Go
package storage
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import (
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"fmt"
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"github.com/go-redis/redis"
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)
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// RedisDBOptions configuration for RedisDB.
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type RedisDBOptions struct {
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Addr string `yaml:"Addr"`
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Password string `yaml:"Password"`
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DB int `yaml:"DB"`
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}
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// RedisStore holds the client and maybe later some more metadata.
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type RedisStore struct {
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client *redis.Client
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}
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// NewRedisStore returns an new initialized - ready to use RedisStore object.
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func NewRedisStore(cfg RedisDBOptions) (*RedisStore, error) {
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c := redis.NewClient(&redis.Options{
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Addr: cfg.Addr,
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Password: cfg.Password,
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DB: cfg.DB,
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})
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if _, err := c.Ping().Result(); err != nil {
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return nil, err
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}
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return &RedisStore{client: c}, nil
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}
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// Batch implements the Store interface.
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func (s *RedisStore) Batch() Batch {
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return newMemoryBatch()
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}
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// Get implements the Store interface.
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func (s *RedisStore) Get(k []byte) ([]byte, error) {
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val, err := s.client.Get(string(k)).Result()
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if err != nil {
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return nil, err
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}
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return []byte(val), nil
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}
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// Put implements the Store interface.
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func (s *RedisStore) Put(k, v []byte) error {
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s.client.Set(string(k), string(v), 0)
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return nil
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}
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// PutBatch implements the Store interface.
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func (s *RedisStore) PutBatch(b Batch) error {
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pipe := s.client.Pipeline()
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for k, v := range b.(*MemoryBatch).m {
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pipe.Set(string(*k), v, 0)
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}
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_, err := pipe.Exec()
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return err
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}
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// Seek implements the Store interface.
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func (s *RedisStore) Seek(k []byte, f func(k, v []byte)) {
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iter := s.client.Scan(0, fmt.Sprintf("%s*", k), 0).Iterator()
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for iter.Next() {
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key := iter.Val()
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val, _ := s.client.Get(key).Result()
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f([]byte(key), []byte(val))
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}
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}
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// Close implements the Store interface.
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func (s *RedisStore) Close() error {
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return s.client.Close()
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}
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