yugabytedb.go•4.27 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 yugabytedb
import (
"context"
"fmt"
"github.com/goccy/go-yaml"
"github.com/googleapis/genai-toolbox/internal/sources"
"github.com/yugabyte/pgx/v5/pgxpool"
"go.opentelemetry.io/otel/trace"
)
const SourceKind string = "yugabytedb"
// 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"`
Host string `yaml:"host" validate:"required"`
Port string `yaml:"port" validate:"required"`
User string `yaml:"user" validate:"required"`
Password string `yaml:"password" validate:"required"`
Database string `yaml:"database" validate:"required"`
LoadBalance string `yaml:"loadBalance"`
TopologyKeys string `yaml:"topologyKeys"`
YBServersRefreshInterval string `yaml:"ybServersRefreshInterval"`
FallBackToTopologyKeysOnly string `yaml:"fallbackToTopologyKeysOnly"`
FailedHostReconnectDelaySeconds string `yaml:"failedHostReconnectDelaySecs"`
}
func (r Config) SourceConfigKind() string {
return SourceKind
}
func (r Config) Initialize(ctx context.Context, tracer trace.Tracer) (sources.Source, error) {
pool, err := initYugabyteDBConnectionPool(ctx, tracer, r.Name, r.Host, r.Port, r.User, r.Password, r.Database, r.LoadBalance, r.TopologyKeys, r.YBServersRefreshInterval, r.FallBackToTopologyKeysOnly, r.FailedHostReconnectDelaySeconds)
if err != nil {
return nil, fmt.Errorf("unable to create pool: %w", err)
}
err = pool.Ping(ctx)
if err != nil {
return nil, fmt.Errorf("unable to connect successfully: %w", err)
}
s := &Source{
Name: r.Name,
Kind: SourceKind,
Pool: pool,
}
return s, nil
}
var _ sources.Source = &Source{}
type Source struct {
Name string `yaml:"name"`
Kind string `yaml:"kind"`
Pool *pgxpool.Pool
}
func (s *Source) SourceKind() string {
return SourceKind
}
func (s *Source) YugabyteDBPool() *pgxpool.Pool {
return s.Pool
}
func initYugabyteDBConnectionPool(ctx context.Context, tracer trace.Tracer, name, host, port, user, pass, dbname, loadBalance, topologyKeys, refreshInterval, explicitFallback, failedHostTTL string) (*pgxpool.Pool, error) {
//nolint:all // Reassigned ctx
ctx, span := sources.InitConnectionSpan(ctx, tracer, SourceKind, name)
defer span.End()
// urlExample := "postgres://username:password@localhost:5433/database_name"
i := fmt.Sprintf("postgres://%s:%s@%s:%s/%s", user, pass, host, port, dbname)
if loadBalance == "true" {
i = fmt.Sprintf("%s?load_balance=%s", i, loadBalance)
if topologyKeys != "" {
i = fmt.Sprintf("%s&topology_keys=%s", i, topologyKeys)
if explicitFallback == "true" {
i = fmt.Sprintf("%s&fallback_to_topology_keys_only=%s", i, explicitFallback)
}
}
if refreshInterval != "" {
i = fmt.Sprintf("%s&yb_servers_refresh_interval=%s", i, refreshInterval)
}
if failedHostTTL != "" {
i = fmt.Sprintf("%s&failed_host_reconnect_delay_secs=%s", i, failedHostTTL)
}
}
pool, err := pgxpool.New(ctx, i)
if err != nil {
return nil, fmt.Errorf("unable to create connection pool: %w", err)
}
return pool, nil
}