mirror of
https://github.com/googleapis/genai-toolbox.git
synced 2026-02-06 05:04:58 -05:00
1c9ad5ea24
This commit refactors the source configuration and loading mechanism to use a dynamic registration pattern. Each source package now registers itself with a central registry via its init() function. The server configuration code uses this registry to decode and initialize sources, decoupling it from specific source implementations and simplifying the addition of new sources. Key changes: - Introduced `sources.Register()` and `newConfig()` constructor in each source package. - Moved source package imports to `cmd/root.go` as blank imports to trigger `init()` functions for self-registration. - Removed direct imports of specific source packages from `internal/server/config.go`. - Renamed `SourceKind` constants to `Kind` within each source package. - Updated tests to use the new `Kind` constants and reflect registration changes. --------- Co-authored-by: Yuan Teoh <yuanteoh@google.com>
133 lines
3.7 KiB
Go
133 lines
3.7 KiB
Go
// Copyright 2025 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 cloudsqlmysql
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import (
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"context"
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"database/sql"
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"fmt"
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"slices"
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"cloud.google.com/go/cloudsqlconn/mysql/mysql"
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"github.com/goccy/go-yaml"
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"github.com/googleapis/genai-toolbox/internal/sources"
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"github.com/googleapis/genai-toolbox/internal/util"
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"go.opentelemetry.io/otel/trace"
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)
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const SourceKind string = "cloud-sql-mysql"
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// validate interface
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var _ sources.SourceConfig = Config{}
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func init() {
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if !sources.Register(SourceKind, newConfig) {
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panic(fmt.Sprintf("source kind %q already registered", SourceKind))
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}
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}
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func newConfig(ctx context.Context, name string, decoder *yaml.Decoder) (sources.SourceConfig, error) {
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actual := Config{Name: name, IPType: "public"} // Default IPType
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if err := decoder.DecodeContext(ctx, &actual); err != nil {
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return nil, err
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}
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return actual, nil
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}
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type Config struct {
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Name string `yaml:"name" validate:"required"`
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Kind string `yaml:"kind" validate:"required"`
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Project string `yaml:"project" validate:"required"`
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Region string `yaml:"region" validate:"required"`
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Instance string `yaml:"instance" validate:"required"`
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IPType sources.IPType `yaml:"ipType" validate:"required"`
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User string `yaml:"user" validate:"required"`
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Password string `yaml:"password" validate:"required"`
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Database string `yaml:"database" validate:"required"`
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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(ctx context.Context, tracer trace.Tracer) (sources.Source, error) {
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pool, err := initCloudSQLMySQLConnectionPool(ctx, tracer, r.Name, 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.PingContext(ctx)
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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 *sql.DB
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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) MySQLPool() *sql.DB {
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return s.Pool
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}
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func initCloudSQLMySQLConnectionPool(ctx context.Context, tracer trace.Tracer, name, project, region, instance, ipType, user, pass, dbname string) (*sql.DB, error) {
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//nolint:all // Reassigned ctx
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ctx, span := sources.InitConnectionSpan(ctx, tracer, SourceKind, name)
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defer span.End()
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// Create a new dialer with options
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userAgent, err := util.UserAgentFromContext(ctx)
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if err != nil {
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return nil, err
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}
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opts, err := sources.GetCloudSQLOpts(ipType, userAgent, false)
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if err != nil {
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return nil, err
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}
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if !slices.Contains(sql.Drivers(), "cloudsql-mysql") {
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_, err = mysql.RegisterDriver("cloudsql-mysql", opts...)
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if err != nil {
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return nil, fmt.Errorf("unable to register driver: %w", err)
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}
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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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dsn := fmt.Sprintf("%s:%s@cloudsql-mysql(%s:%s:%s)/%s", user, pass, project, region, instance, dbname)
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db, err := sql.Open(
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"cloudsql-mysql",
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dsn,
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)
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if err != nil {
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return nil, err
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}
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return db, nil
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}
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