88 lines
1.7 KiB
Go
Executable File
88 lines
1.7 KiB
Go
Executable File
package storage
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import (
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"errors"
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"fmt"
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"time"
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"github.com/gomodule/redigo/redis"
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)
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type Redis struct {
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client redis.Conn
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}
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func NewRedis(addr, user, pass string) (*Redis, error) {
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opts := []redis.DialOption{}
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if pass != "" {
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opts = append(opts, redis.DialPassword(pass))
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}
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opts = append(opts, redis.DialConnectTimeout(time.Second*3))
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client, err := redis.Dial("tcp", addr, opts...)
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return &Redis{
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client: client,
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}, err
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}
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func (m *Redis) String() string {
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return fmt.Sprintf("%v", *m)
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}
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func (m *Redis) Close() error {
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return m.client.Close()
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}
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func (m *Redis) List(ns []string, limits ...string) ([]string, error) {
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limits = resolveLimits(limits)
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limits[0] = resolveNamespace(append(ns, limits[0]))
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limits[1] = resolveNamespace(append(ns, limits[1]))
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resp, err := m.client.Do("KEYS", "*")
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if err != nil {
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return nil, err
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}
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keys := []string{}
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if results, ok := resp.([]interface{}); !ok {
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return nil, ErrNotFound
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} else {
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for i := range results {
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_, ok := results[i].([]uint8)
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if !ok {
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return nil, errors.New("not a []byte key")
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}
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k := fmt.Sprintf("%s", results[i])
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if k < limits[0] {
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continue
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}
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if k > limits[1] {
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break
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}
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keys = append(keys, k)
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}
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}
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return keys, nil
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}
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func (m *Redis) Get(key string, ns ...string) ([]byte, error) {
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key = resolveNamespace(append(ns, key))
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resp, err := m.client.Do("GET", key)
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if err != nil {
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return nil, err
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}
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if resp == nil {
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return nil, ErrNotFound
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}
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b, ok := resp.([]byte)
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if !ok {
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return nil, errors.New("resp not a []byte")
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}
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return b, nil
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}
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func (m *Redis) Set(key string, value []byte, ns ...string) error {
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namespace := resolveNamespace(append(ns, key))
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_, err := m.client.Do("SET", namespace, value)
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return err
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}
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