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92 lines
2.4 KiB
Go
92 lines
2.4 KiB
Go
/*
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* Copyright 2025 CloudWeGo Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package memory
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import (
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"context"
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"strings"
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miniredis "github.com/alicebob/miniredis/v2"
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"github.com/cloudwego/eino/schema"
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"github.com/redis/go-redis/v9"
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)
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// RedisStore persists serialized messages in Redis under the provided session key.
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type RedisStore struct {
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cli *redis.Client
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}
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func NewRedisStore(cli *redis.Client) *RedisStore {
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return &RedisStore{cli: cli}
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}
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// Write encodes and stores messages using Redis SET.
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func (s *RedisStore) Write(ctx context.Context, sessionID string, msgs []*schema.Message) error {
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b, err := EncodeMessages(msgs)
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if err != nil {
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return err
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}
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return s.cli.Set(ctx, sessionID, b, 0).Err()
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}
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// Read returns decoded messages from Redis GET; returns nil if not found.
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func (s *RedisStore) Read(ctx context.Context, sessionID string) ([]*schema.Message, error) {
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res, err := s.cli.Get(ctx, sessionID).Bytes()
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if err == redis.Nil {
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return nil, nil
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}
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if err != nil {
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return nil, err
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}
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return DecodeMessages(res)
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}
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func (s *RedisStore) Query(ctx context.Context, sessionID, text string, limit int) ([]*schema.Message, error) {
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msgs, err := s.Read(ctx, sessionID)
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if err != nil {
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return nil, err
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}
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if len(msgs) == 0 || text == "" {
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return nil, nil
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}
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out := make([]*schema.Message, 0, limit)
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q := strings.ToLower(text)
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for _, m := range msgs {
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if m == nil {
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continue
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}
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if strings.Contains(strings.ToLower(m.Content), q) {
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out = append(out, m)
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if limit > 0 && len(out) >= limit {
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break
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}
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}
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}
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return out, nil
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}
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// NewMiniRedisClient starts an embedded Redis server for local demos/tests.
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func NewMiniRedisClient() (*redis.Client, func(), error) {
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srv, err := miniredis.Run()
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if err != nil {
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return nil, nil, err
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}
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cli := redis.NewClient(&redis.Options{Addr: srv.Addr()})
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closer := func() { srv.Close() }
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return cli, closer, nil
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}
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