MCP Toolbox for Databases

// 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 mongodb import ( "context" "fmt" "github.com/goccy/go-yaml" "github.com/googleapis/genai-toolbox/internal/sources" "github.com/googleapis/genai-toolbox/internal/util" "go.mongodb.org/mongo-driver/mongo" "go.mongodb.org/mongo-driver/mongo/options" "go.opentelemetry.io/otel/trace" ) const SourceKind string = "mongodb" // 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"` Uri string `yaml:"uri" validate:"required"` // MongoDB Atlas connection URI } func (r Config) SourceConfigKind() string { return SourceKind } func (r Config) Initialize(ctx context.Context, tracer trace.Tracer) (sources.Source, error) { client, err := initMongoDBClient(ctx, tracer, r.Name, r.Uri) if err != nil { return nil, fmt.Errorf("unable to create MongoDB client: %w", err) } // Verify the connection err = client.Ping(ctx, nil) if err != nil { return nil, fmt.Errorf("unable to connect successfully: %w", err) } s := &Source{ Config: r, Client: client, } return s, nil } var _ sources.Source = &Source{} type Source struct { Config Client *mongo.Client } func (s *Source) SourceKind() string { return SourceKind } func (s *Source) ToConfig() sources.SourceConfig { return s.Config } func (s *Source) MongoClient() *mongo.Client { return s.Client } func initMongoDBClient(ctx context.Context, tracer trace.Tracer, name, uri string) (*mongo.Client, error) { // Start a tracing span ctx, span := sources.InitConnectionSpan(ctx, tracer, SourceKind, name) defer span.End() userAgent, err := util.UserAgentFromContext(ctx) if err != nil { return nil, err } // Create a new MongoDB client clientOpts := options.Client().ApplyURI(uri).SetAppName(userAgent) client, err := mongo.Connect(ctx, clientOpts) if err != nil { return nil, fmt.Errorf("unable to create MongoDB client: %w", err) } return client, nil }