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Merge pull request #252 from ava-labs/redis-support
Redis support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // Copyright (C) 2024, Ava Labs, Inc. All rights reserved. | ||
| // See the file LICENSE for licensing terms. | ||
|
|
||
| package database | ||
|
|
||
| import ( | ||
| "context" | ||
| "strings" | ||
|
|
||
| "github.com/ava-labs/avalanchego/utils/logging" | ||
| "github.com/ethereum/go-ethereum/common" | ||
| "github.com/redis/go-redis/v9" | ||
| "go.uber.org/zap" | ||
| ) | ||
|
|
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| var _ RelayerDatabase = &RedisDatabase{} | ||
|
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| type RedisDatabase struct { | ||
| logger logging.Logger | ||
| client *redis.Client | ||
| } | ||
|
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| func NewRedisDatabase(logger logging.Logger, redisURL string, relayerIDs []RelayerID) (*RedisDatabase, error) { | ||
| opts, err := redis.ParseURL(redisURL) | ||
| if err != nil { | ||
| logger.Error( | ||
| "Failed to parse Redis URL", | ||
| zap.String("url", redisURL), | ||
| zap.Error(err), | ||
| ) | ||
| return nil, err | ||
| } | ||
|
|
||
| // Create a new Redis client. | ||
| // The server address, password, db index, and protocol version are extracted from the URL | ||
| // If not provided in the URL, request timeouts use the default value of 3 seconds | ||
| client := redis.NewClient(opts) | ||
| return &RedisDatabase{ | ||
| logger: logger, | ||
| client: client, | ||
| }, nil | ||
| } | ||
|
|
||
| func (r *RedisDatabase) Get(relayerID common.Hash, key DataKey) ([]byte, error) { | ||
| ctx := context.Background() | ||
| compositeKey := constructCompositeKey(relayerID, key) | ||
| val, err := r.client.Get(ctx, compositeKey).Result() | ||
| if err != nil { | ||
| r.logger.Debug("Error retrieving key from Redis", | ||
| zap.String("key", compositeKey), | ||
| zap.Error(err)) | ||
| if err == redis.Nil { | ||
| return nil, ErrKeyNotFound | ||
| } | ||
| return nil, err | ||
| } | ||
| return []byte(val), nil | ||
| } | ||
|
|
||
| func (r *RedisDatabase) Put(relayerID common.Hash, key DataKey, value []byte) error { | ||
| ctx := context.Background() | ||
| compositeKey := constructCompositeKey(relayerID, key) | ||
|
|
||
| // Persistently store the value in Redis | ||
| err := r.client.Set(ctx, compositeKey, value, 0).Err() | ||
| if err != nil { | ||
| r.logger.Error("Error storing key in Redis", | ||
| zap.String("key", compositeKey), | ||
| zap.Error(err)) | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func constructCompositeKey(relayerID common.Hash, key DataKey) string { | ||
| const keyDelimiter = "-" | ||
| return strings.Join([]string{relayerID.Hex(), key.String()}, keyDelimiter) | ||
| } |
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