valkey.go•3.38 kB
// Copyright 2025 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package valkey
import (
"context"
"fmt"
"log"
"github.com/goccy/go-yaml"
"github.com/googleapis/genai-toolbox/internal/sources"
"github.com/valkey-io/valkey-go"
"go.opentelemetry.io/otel/trace"
)
const SourceKind string = "valkey"
// validate interface
var _ sources.SourceConfig = Config{}
func init() {
if !sources.Register(SourceKind, newConfig) {
panic(fmt.Sprintf("source kind %q already registered", SourceKind))
}
}
func newConfig(ctx context.Context, name string, decoder *yaml.Decoder) (sources.SourceConfig, error) {
actual := Config{Name: name}
if err := decoder.DecodeContext(ctx, &actual); err != nil {
return nil, err
}
return actual, nil
}
type Config struct {
Name string `yaml:"name" validate:"required"`
Kind string `yaml:"kind" validate:"required"`
Address []string `yaml:"address" validate:"required"`
Username string `yaml:"username"`
Password string `yaml:"password"`
Database int `yaml:"database"`
UseGCPIAM bool `yaml:"useGCPIAM"`
DisableCache bool `yaml:"disableCache"`
}
func (r Config) SourceConfigKind() string {
return SourceKind
}
func (r Config) Initialize(ctx context.Context, tracer trace.Tracer) (sources.Source, error) {
client, err := initValkeyClient(ctx, r)
if err != nil {
return nil, fmt.Errorf("error initializing Valkey client: %s", err)
}
s := &Source{
Name: r.Name,
Kind: SourceKind,
Client: client,
}
return s, nil
}
func initValkeyClient(ctx context.Context, r Config) (valkey.Client, error) {
var authFn func(valkey.AuthCredentialsContext) (valkey.AuthCredentials, error)
if r.UseGCPIAM {
// Pass in an access token getter fn for IAM auth
authFn = func(valkey.AuthCredentialsContext) (valkey.AuthCredentials, error) {
token, err := sources.GetIAMAccessToken(ctx)
creds := valkey.AuthCredentials{Username: "default", Password: token}
if err != nil {
return creds, err
}
return creds, nil
}
}
client, err := valkey.NewClient(valkey.ClientOption{
InitAddress: r.Address,
SelectDB: r.Database,
Username: r.Username,
Password: r.Password,
AuthCredentialsFn: authFn,
DisableCache: r.DisableCache,
})
if err != nil {
log.Fatalf("error creating Valkey client: %v", err)
}
// Ping the server to check connectivity
pingCmd := client.B().Ping().Build()
_, err = client.Do(ctx, pingCmd).ToString()
if err != nil {
log.Fatalf("Failed to execute PING command: %v", err)
}
return client, nil
}
var _ sources.Source = &Source{}
type Source struct {
Name string `yaml:"name"`
Kind string `yaml:"kind"`
Client valkey.Client
}
func (s *Source) SourceKind() string {
return SourceKind
}
func (s *Source) ValkeyClient() valkey.Client {
return s.Client
}