mirror of
https://github.com/googleapis/genai-toolbox.git
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6479c1dbe2
Allow user to set if their database uses private or public ip. The reason we add this is because the dialer require different initialization with private and public ip. By default, toolbox will use public ip.
126 lines
3.5 KiB
Go
126 lines
3.5 KiB
Go
// Copyright 2024 Google LLC
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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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package cloudsqlpg
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import (
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"context"
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"fmt"
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"net"
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"strings"
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"cloud.google.com/go/cloudsqlconn"
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"github.com/googleapis/genai-toolbox/internal/sources"
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"github.com/jackc/pgx/v5/pgxpool"
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)
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const SourceKind string = "cloud-sql-postgres"
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// validate interface
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var _ sources.SourceConfig = Config{}
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type Config struct {
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Name string `yaml:"name"`
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Kind string `yaml:"kind"`
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Project string `yaml:"project"`
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Region string `yaml:"region"`
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Instance string `yaml:"instance"`
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IPType sources.IPType `yaml:"ip_type"`
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User string `yaml:"user"`
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Password string `yaml:"password"`
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Database string `yaml:"database"`
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}
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func (r Config) SourceConfigKind() string {
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return SourceKind
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}
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func (r Config) Initialize() (sources.Source, error) {
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pool, err := initCloudSQLPgConnectionPool(r.Project, r.Region, r.Instance, r.IPType.String(), r.User, r.Password, r.Database)
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if err != nil {
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return nil, fmt.Errorf("unable to create pool: %w", err)
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}
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err = pool.Ping(context.Background())
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if err != nil {
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return nil, fmt.Errorf("unable to connect successfully: %w", err)
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}
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s := &Source{
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Name: r.Name,
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Kind: SourceKind,
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Pool: pool,
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}
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return s, nil
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}
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var _ sources.Source = &Source{}
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type Source struct {
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Name string `yaml:"name"`
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Kind string `yaml:"kind"`
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Pool *pgxpool.Pool
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}
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func (s *Source) SourceKind() string {
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return SourceKind
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}
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func (s *Source) PostgresPool() *pgxpool.Pool {
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return s.Pool
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}
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func getDialOpts(ip_type string) ([]cloudsqlconn.DialOption, error) {
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switch strings.ToLower(ip_type) {
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case "private":
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return []cloudsqlconn.DialOption{cloudsqlconn.WithPrivateIP()}, nil
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case "public":
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return []cloudsqlconn.DialOption{cloudsqlconn.WithPublicIP()}, nil
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default:
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return nil, fmt.Errorf("invalid ip_type %s", ip_type)
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}
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}
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func initCloudSQLPgConnectionPool(project, region, instance, ip_type, user, pass, dbname string) (*pgxpool.Pool, error) {
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// Configure the driver to connect to the database
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dsn := fmt.Sprintf("user=%s password=%s dbname=%s sslmode=disable", user, pass, dbname)
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config, err := pgxpool.ParseConfig(dsn)
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if err != nil {
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return nil, fmt.Errorf("unable to parse connection uri: %w", err)
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}
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// Create a new dialer with options
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dialOpts, err := getDialOpts(ip_type)
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if err != nil {
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return nil, err
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}
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d, err := cloudsqlconn.NewDialer(context.Background(), cloudsqlconn.WithDefaultDialOptions(dialOpts...))
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if err != nil {
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return nil, fmt.Errorf("unable to parse connection uri: %w", err)
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}
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// Tell the driver to use the Cloud SQL Go Connector to create connections
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i := fmt.Sprintf("%s:%s:%s", project, region, instance)
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config.ConnConfig.DialFunc = func(ctx context.Context, _ string, instance string) (net.Conn, error) {
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return d.Dial(ctx, i)
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}
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// Interact with the driver directly as you normally would
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pool, err := pgxpool.NewWithConfig(context.Background(), config)
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if err != nil {
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return nil, err
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}
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return pool, nil
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}
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