70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
package main
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import (
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"context"
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"fmt"
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"os"
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"strings"
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"time"
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"github.com/gofrs/uuid/v3"
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"github.com/pkg/errors"
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redis "github.com/redis/go-redis/v9"
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)
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const redisDefaultPrefix = "io.luzifer.ots"
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type storageRedis struct {
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conn *redis.Client
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}
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func newStorageRedis() (storage, error) {
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if os.Getenv("REDIS_URL") == "" {
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return nil, fmt.Errorf("REDIS_URL environment variable not set")
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}
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// We replace the old URI format
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// tcp://auth:password@127.0.0.1:6379/0
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// with the new one
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// redis://<user>:<password>@<host>:<port>/<db_number>
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// in order to maintain backwards compatibility
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opt, err := redis.ParseURL(strings.Replace(os.Getenv("REDIS_URL"), "tcp://", "redis://", 1))
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if err != nil {
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return nil, errors.Wrap(err, "parsing REDIS_URL")
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}
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s := &storageRedis{
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conn: redis.NewClient(opt),
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}
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return s, nil
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}
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func (s storageRedis) Create(secret string, expireIn time.Duration) (string, error) {
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id := uuid.Must(uuid.NewV4()).String()
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err := s.conn.SetEx(context.Background(), s.redisKey(id), secret, expireIn).Err()
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return id, errors.Wrap(err, "writing redis key")
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}
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func (s storageRedis) ReadAndDestroy(id string) (string, error) {
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secret, err := s.conn.Get(context.Background(), s.redisKey(id)).Result()
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if err != nil {
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if errors.Is(err, redis.Nil) {
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return "", errSecretNotFound
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}
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return "", err
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}
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err = s.conn.Del(context.Background(), s.redisKey(id)).Err()
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return string(secret), errors.Wrap(err, "deleting key")
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}
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func (s storageRedis) redisKey(id string) string {
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prefix := redisDefaultPrefix
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if prfx := os.Getenv("REDIS_KEY"); prfx != "" {
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prefix = prfx
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}
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return strings.Join([]string{prefix, id}, ":")
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}
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