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https://github.com/googleapis/genai-toolbox.git
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ae0c29254a
To keep a persistent backend storage for configuration, we will have to keep a single source of truth. This involves supporting bi-directional conversion between Config and Source. This PR make the following changes: * Embed Config in Source * Add `ToConfig()` to extract Config from Source.
111 lines
2.7 KiB
Go
111 lines
2.7 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 sqlite
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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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"github.com/goccy/go-yaml"
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"github.com/googleapis/genai-toolbox/internal/sources"
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"go.opentelemetry.io/otel/trace"
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_ "modernc.org/sqlite" // Pure Go SQLite driver
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)
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const SourceKind string = "sqlite"
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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}
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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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Database string `yaml:"database" validate:"required"` // Path to SQLite database file
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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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db, err := initSQLiteConnection(ctx, tracer, r.Name, r.Database)
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if err != nil {
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return nil, fmt.Errorf("unable to create db connection: %w", err)
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}
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err = db.PingContext(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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Config: r,
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Db: db,
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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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Config
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Db *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) ToConfig() sources.SourceConfig {
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return s.Config
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}
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func (s *Source) SQLiteDB() *sql.DB {
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return s.Db
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}
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func initSQLiteConnection(ctx context.Context, tracer trace.Tracer, name, dbPath 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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// Open database connection
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db, err := sql.Open("sqlite", dbPath)
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if err != nil {
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return nil, fmt.Errorf("sql.Open: %w", err)
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}
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// Set some reasonable defaults for SQLite
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db.SetMaxOpenConns(1) // SQLite only supports one writer at a time
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db.SetMaxIdleConns(1)
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return db, nil
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}
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