Add Redis Store

cmd/gateway/main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"context"
 	"database/sql"
 	"flag"
 	"fmt"
@@ -12,6 +13,7 @@ import (
 	_ "github.com/go-sql-driver/mysql"
 	_ "github.com/jackc/pgx/v5/stdlib"
 	_ "github.com/mattn/go-sqlite3"
+	"github.com/redis/go-redis/v9"
 
 	"github.com/ajac-zero/latticelm/internal/auth"
 	"github.com/ajac-zero/latticelm/internal/config"
@@ -112,6 +114,22 @@ func initConversationStore(cfg config.ConversationConfig, logger *log.Logger) (c
 		}
 		logger.Printf("Conversation store initialized (sql/%s, TTL: %s)", driver, ttl)
 		return store, nil
+	case "redis":
+		opts, err := redis.ParseURL(cfg.DSN)
+		if err != nil {
+			return nil, fmt.Errorf("parse redis dsn: %w", err)
+		}
+		client := redis.NewClient(opts)
+
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+
+		if err := client.Ping(ctx).Err(); err != nil {
+			return nil, fmt.Errorf("connect to redis: %w", err)
+		}
+
+		logger.Printf("Conversation store initialized (redis, TTL: %s)", ttl)
+		return conversation.NewRedisStore(client, ttl), nil
 	default:
 		logger.Printf("Conversation store initialized (memory, TTL: %s)", ttl)
 		return conversation.NewMemoryStore(ttl), nil

config.example.yaml

@@ -27,16 +27,19 @@ providers:
   #   endpoint: "https://your-resource.services.ai.azure.com/anthropic"
 
 # conversations:
-#   store: "sql"        # "memory" (default) or "sql"
+#   store: "sql"        # "memory" (default), "sql", or "redis"
 #   ttl: "1h"           # conversation expiration (default: 1h)
-#   driver: "sqlite3"   # SQL driver: "sqlite3", "mysql", "pgx"
+#   driver: "sqlite3"   # SQL driver: "sqlite3", "mysql", "pgx" (required for sql store)
-#   dsn: "conversations.db"  # connection string
+#   dsn: "conversations.db"  # connection string (required for sql/redis store)
 #   # MySQL example:
 #   # driver: "mysql"
 #   # dsn: "user:password@tcp(localhost:3306)/dbname?parseTime=true"
 #   # PostgreSQL example:
 #   # driver: "pgx"
 #   # dsn: "postgres://user:password@localhost:5432/dbname?sslmode=disable"
+#   # Redis example:
+#   # store: "redis"
+#   # dsn: "redis://:password@localhost:6379/0"
 
 models:
   - name: "gemini-1.5-flash"

go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/jackc/pgx/v5 v5.8.0
 	github.com/mattn/go-sqlite3 v1.14.34
 	github.com/openai/openai-go/v3 v3.2.0
+	github.com/redis/go-redis/v9 v9.18.0
 	google.golang.org/genai v1.48.0
 	gopkg.in/yaml.v3 v3.0.1
 )
@@ -21,6 +22,8 @@ require (
 	filippo.io/edwards25519 v1.1.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.21.0 // indirect
 	github.com/Azure/azure-sdk-for-go/sdk/internal v1.11.2 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/s2a-go v0.1.8 // indirect
@@ -34,6 +37,7 @@ require (
 	github.com/tidwall/pretty v1.2.1 // indirect
 	github.com/tidwall/sjson v1.2.5 // indirect
 	go.opencensus.io v0.24.0 // indirect
+	go.uber.org/atomic v1.11.0 // indirect
 	golang.org/x/crypto v0.47.0 // indirect
 	golang.org/x/net v0.49.0 // indirect
 	golang.org/x/sync v0.19.0 // indirect

go.sum

@@ -18,12 +18,20 @@ github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2/go.mod h1:wP83
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/anthropics/anthropic-sdk-go v1.26.0 h1:oUTzFaUpAevfuELAP1sjL6CQJ9HHAfT7CoSYSac11PY=
 github.com/anthropics/anthropic-sdk-go v1.26.0/go.mod h1:qUKmaW+uuPB64iy1l+4kOSvaLqPXnHTTBKH6RVZ7q5Q=
+github.com/bsm/ginkgo/v2 v2.12.0 h1:Ny8MWAHyOepLGlLKYmXG4IEkioBysk6GpaRTLC8zwWs=
+github.com/bsm/ginkgo/v2 v2.12.0/go.mod h1:SwYbGRRDovPVboqFv0tPTcG1sN61LM1Z4ARdbAV9g4c=
+github.com/bsm/gomega v1.27.10 h1:yeMWxP2pV2fG3FgAODIY8EiRE3dy0aeFYt4l7wh6yKA=
+github.com/bsm/gomega v1.27.10/go.mod h1:JyEr/xRbxbtgWNi8tIEVPUYZ5Dzef52k01W3YH0H+O0=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/dnaeon/go-vcr v1.2.0 h1:zHCHvJYTMh1N7xnV7zf1m1GPBF9Ad0Jk/whtQ1663qI=
 github.com/dnaeon/go-vcr v1.2.0/go.mod h1:R4UdLID7HZT3taECzJs4YgbbH6PIGXB6W/sc5OLb6RQ=
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
@@ -73,6 +81,8 @@ github.com/jackc/pgx/v5 v5.8.0 h1:TYPDoleBBme0xGSAX3/+NujXXtpZn9HBONkQC7IEZSo=
 github.com/jackc/pgx/v5 v5.8.0/go.mod h1:QVeDInX2m9VyzvNeiCJVjCkNFqzsNb43204HshNSZKw=
 github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
 github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
+github.com/klauspost/cpuid/v2 v2.0.9 h1:lgaqFMSdTdQYdZ04uHyN2d/eKdOMyi2YLSvlQIBFYa4=
+github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
@@ -88,6 +98,8 @@ github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c/go.mod h1:7rwL4CYBLnjL
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
+github.com/redis/go-redis/v9 v9.18.0 h1:pMkxYPkEbMPwRdenAzUNyFNrDgHx9U+DrBabWNfSRQs=
+github.com/redis/go-redis/v9 v9.18.0/go.mod h1:k3ufPphLU5YXwNTUcCRXGxUoF1fqxnhFQmscfkCoDA0=
 github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
 github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -110,8 +122,12 @@ github.com/tidwall/pretty v1.2.1 h1:qjsOFOWWQl+N3RsoF5/ssm1pHmJJwhjlSbZ51I6wMl4=
 github.com/tidwall/pretty v1.2.1/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
 github.com/tidwall/sjson v1.2.5 h1:kLy8mja+1c9jlljvWTlSazM7cKDRfJuR/bOJhcY5NcY=
 github.com/tidwall/sjson v1.2.5/go.mod h1:Fvgq9kS/6ociJEDnK0Fk1cpYF4FIW6ZF7LAe+6jwd28=
+github.com/zeebo/xxh3 v1.0.2 h1:xZmwmqxHZA8AI603jOQ0tMqmBr9lPeFwGg6d+xy9DC0=
+github.com/zeebo/xxh3 v1.0.2/go.mod h1:5NWz9Sef7zIDm2JHfFlcQvNekmcEl9ekUZQQKCYaDcA=
 go.opencensus.io v0.24.0 h1:y73uSU6J157QMP2kn2r30vwW1A2W2WFwSCGnAVxeaD0=
 go.opencensus.io v0.24.0/go.mod h1:vNK8G9p7aAivkbmorf4v+7Hgx+Zs0yY+0fOtgBfjQKo=
+go.uber.org/atomic v1.11.0 h1:ZvwS0R+56ePWxUNi+Atn9dWONBPp/AUETXlHW0DxSjE=
+go.uber.org/atomic v1.11.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.47.0 h1:V6e3FRj+n4dbpw86FJ8Fv7XVOql7TEwpHapKoMJ/GO8=

internal/config/config.go

@@ -18,12 +18,12 @@ type Config struct {
 
 // ConversationConfig controls conversation storage.
 type ConversationConfig struct {
-	// Store is the storage backend: "memory" (default) or "sql".
+	// Store is the storage backend: "memory" (default), "sql", or "redis".
 	Store string `yaml:"store"`
 	// TTL is the conversation expiration duration (e.g. "1h", "30m"). Defaults to "1h".
 	TTL string `yaml:"ttl"`
-	// DSN is the database connection string, required when store is "sql".
+	// DSN is the database/Redis connection string, required when store is "sql" or "redis".
-	// Examples: "conversations.db" (SQLite), "postgres://user:pass@host/db".
+	// Examples: "conversations.db" (SQLite), "postgres://user:pass@host/db", "redis://:password@localhost:6379/0".
 	DSN string `yaml:"dsn"`
 	// Driver is the SQL driver name, required when store is "sql".
 	// Examples: "sqlite3", "postgres", "mysql".

internal/conversation/redis_store.go

@@ -0,0 +1,106 @@
+package conversation
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	"github.com/ajac-zero/latticelm/internal/api"
+	"github.com/redis/go-redis/v9"
+)
+
+// RedisStore manages conversation history in Redis with automatic expiration.
+type RedisStore struct {
+	client *redis.Client
+	ttl    time.Duration
+	ctx    context.Context
+}
+
+// NewRedisStore creates a Redis-backed conversation store.
+func NewRedisStore(client *redis.Client, ttl time.Duration) *RedisStore {
+	return &RedisStore{
+		client: client,
+		ttl:    ttl,
+		ctx:    context.Background(),
+	}
+}
+
+// key returns the Redis key for a conversation ID.
+func (s *RedisStore) key(id string) string {
+	return "conv:" + id
+}
+
+// Get retrieves a conversation by ID from Redis.
+func (s *RedisStore) Get(id string) (*Conversation, bool) {
+	data, err := s.client.Get(s.ctx, s.key(id)).Bytes()
+	if err != nil {
+		return nil, false
+	}
+
+	var conv Conversation
+	if err := json.Unmarshal(data, &conv); err != nil {
+		return nil, false
+	}
+
+	return &conv, true
+}
+
+// Create creates a new conversation with the given messages.
+func (s *RedisStore) Create(id string, model string, messages []api.Message) *Conversation {
+	now := time.Now()
+	conv := &Conversation{
+		ID:        id,
+		Messages:  messages,
+		Model:     model,
+		CreatedAt: now,
+		UpdatedAt: now,
+	}
+
+	data, _ := json.Marshal(conv)
+	_ = s.client.Set(s.ctx, s.key(id), data, s.ttl).Err()
+
+	return conv
+}
+
+// Append adds new messages to an existing conversation.
+func (s *RedisStore) Append(id string, messages ...api.Message) (*Conversation, bool) {
+	conv, ok := s.Get(id)
+	if !ok {
+		return nil, false
+	}
+
+	conv.Messages = append(conv.Messages, messages...)
+	conv.UpdatedAt = time.Now()
+
+	data, _ := json.Marshal(conv)
+	_ = s.client.Set(s.ctx, s.key(id), data, s.ttl).Err()
+
+	return conv, true
+}
+
+// Delete removes a conversation from Redis.
+func (s *RedisStore) Delete(id string) {
+	_ = s.client.Del(s.ctx, s.key(id)).Err()
+}
+
+// Size returns the number of active conversations in Redis.
+func (s *RedisStore) Size() int {
+	var count int
+	var cursor uint64
+
+	for {
+		keys, nextCursor, err := s.client.Scan(s.ctx, cursor, "conv:*", 100).Result()
+		if err != nil {
+			return 0
+		}
+
+		count += len(keys)
+		cursor = nextCursor
+
+		if cursor == 0 {
+			break
+		}
+	}
+
+	return count
+}

internal/providers/openai/convert.go

@@ -5,12 +5,12 @@ import (
 	"fmt"
 
 	"github.com/ajac-zero/latticelm/internal/api"
-	"github.com/openai/openai-go"
+	"github.com/openai/openai-go/v3"
-	"github.com/openai/openai-go/shared"
+	"github.com/openai/openai-go/v3/shared"
 )
 
 // parseTools converts Open Responses tools to OpenAI format
-func parseTools(req *api.ResponseRequest) ([]openai.ChatCompletionToolParam, error) {
+func parseTools(req *api.ResponseRequest) ([]openai.ChatCompletionToolUnionParam, error) {
 	if req.Tools == nil || len(req.Tools) == 0 {
 		return nil, nil
 	}
@@ -20,29 +20,27 @@ func parseTools(req *api.ResponseRequest) ([]openai.ChatCompletionToolParam, err
 		return nil, fmt.Errorf("unmarshal tools: %w", err)
 	}
 
-	var tools []openai.ChatCompletionToolParam
+	var tools []openai.ChatCompletionToolUnionParam
 	for _, td := range toolDefs {
-		// Convert Open Responses tool to OpenAI ChatCompletionToolParam
+		// Convert Open Responses tool to OpenAI function tool
 		// Extract: name, description, parameters
 		name, _ := td["name"].(string)
 		desc, _ := td["description"].(string)
 		params, _ := td["parameters"].(map[string]interface{})
 
-		tool := openai.ChatCompletionToolParam{
+		funcDef := shared.FunctionDefinitionParam{
-			Function: shared.FunctionDefinitionParam{
+			Name: name,
-				Name: name,
-			},
 		}
 
 		if desc != "" {
-			tool.Function.Description = openai.String(desc)
+			funcDef.Description = openai.String(desc)
 		}
 
 		if params != nil {
-			tool.Function.Parameters = shared.FunctionParameters(params)
+			funcDef.Parameters = shared.FunctionParameters(params)
 		}
 
-		tools = append(tools, tool)
+		tools = append(tools, openai.ChatCompletionFunctionTool(funcDef))
 	}
 
 	return tools, nil
@@ -67,17 +65,16 @@ func parseToolChoice(req *api.ResponseRequest) (openai.ChatCompletionToolChoiceO
 		return result, nil
 	}
 
-	// Handle specific function selection: {"type": "function", "name": "..."}
+	// Handle specific function selection: {"type": "function", "function": {"name": "..."}}
 	if obj, ok := choice.(map[string]interface{}); ok {
 		funcObj, _ := obj["function"].(map[string]interface{})
 		name, _ := funcObj["name"].(string)
 
-		result.OfChatCompletionNamedToolChoice = &openai.ChatCompletionNamedToolChoiceParam{
+		return openai.ToolChoiceOptionFunctionToolChoice(
-			Function: openai.ChatCompletionNamedToolChoiceFunctionParam{
+			openai.ChatCompletionNamedToolChoiceFunctionParam{
 				Name: name,
 			},
-		}
+		), nil
-		return result, nil
 	}
 
 	return result, fmt.Errorf("invalid tool_choice format")