Files
genai-toolbox/internal/sources/cloud_sql_pg.go
Kurtis Van Gent 3703176fce feat: add initial cloud sql pg invocation (#14)
Makes the following changes:
- Fills in previously stubbed "Invoke()" function for the Cloud SQL
Generic Tool
- Updates API to /{tool_name}/invoke to for invocation of said tool 
- Updates response to use JSON 
- Correctly returns error messages for invalid http codes
2024-10-15 09:53:01 -06:00

100 lines
2.7 KiB
Go

// Copyright 2024 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 sources
import (
"context"
"fmt"
"net"
"cloud.google.com/go/cloudsqlconn"
"github.com/jackc/pgx/v5/pgxpool"
)
const CloudSQLPgKind string = "cloud-sql-postgres"
// validate interface
var _ Config = CloudSQLPgConfig{}
type CloudSQLPgConfig struct {
Name string `yaml:"name"`
Kind string `yaml:"kind"`
Project string `yaml:"project"`
Region string `yaml:"region"`
Instance string `yaml:"instance"`
User string `yaml:"user"`
Password string `yaml:"password"`
Database string `yaml:"database"`
}
func (r CloudSQLPgConfig) sourceKind() string {
return CloudSQLPgKind
}
func (r CloudSQLPgConfig) Initialize() (Source, error) {
pool, err := initConnectionPool(r.Project, r.Region, r.Instance, r.User, r.Password, r.Database)
if err != nil {
return nil, fmt.Errorf("Unable to create pool: %w", err)
}
err = pool.Ping(context.Background())
if err != nil {
return nil, fmt.Errorf("Unable to connect successfully: %w", err)
}
s := CloudSQLPgSource{
Name: r.Name,
Kind: CloudSQLPgKind,
Pool: pool,
}
return s, nil
}
var _ Source = CloudSQLPgSource{}
type CloudSQLPgSource struct {
Name string `yaml:"name"`
Kind string `yaml:"kind"`
Pool *pgxpool.Pool
}
func initConnectionPool(project, region, instance, user, pass, dbname string) (*pgxpool.Pool, error) {
// Configure the driver to connect to the database
dsn := fmt.Sprintf("user=%s password=%s dbname=%s sslmode=disable", user, pass, dbname)
config, err := pgxpool.ParseConfig(dsn)
if err != nil {
return nil, fmt.Errorf("Unable to parse connection uri: %w", err)
}
// Create a new dialer with any options
d, err := cloudsqlconn.NewDialer(context.Background())
if err != nil {
return nil, fmt.Errorf("Unable to parse connection uri: %w", err)
}
// Tell the driver to use the Cloud SQL Go Connector to create connections
i := fmt.Sprintf("%s:%s:%s", project, region, instance)
config.ConnConfig.DialFunc = func(ctx context.Context, _ string, instance string) (net.Conn, error) {
return d.Dial(ctx, i)
}
// Interact with the driver directly as you normally would
pool, err := pgxpool.NewWithConfig(context.Background(), config)
if err != nil {
return nil, err
}
return pool, nil
}