package mongodb import ( "context" "time" "github.com/lus/pasty/internal/config" "github.com/lus/pasty/internal/shared" "go.mongodb.org/mongo-driver/bson" "go.mongodb.org/mongo-driver/mongo" "go.mongodb.org/mongo-driver/mongo/options" "go.mongodb.org/mongo-driver/mongo/readpref" ) // MongoDBDriver represents the MongoDB storage driver type MongoDBDriver struct { client *mongo.Client database string collection string } // Initialize initializes the MongoDB storage driver func (driver *MongoDBDriver) Initialize() error { // Define the context for the following database operation ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second) defer cancel() // Connect to the MongoDB host client, err := mongo.Connect(ctx, options.Client().ApplyURI(config.Current.MongoDB.DSN)) if err != nil { return err } // Ping the MongoDB host err = client.Ping(ctx, readpref.Primary()) if err != nil { return err } // Set the driver attributes driver.client = client driver.database = config.Current.MongoDB.Database driver.collection = config.Current.MongoDB.Collection return nil } // Terminate terminates the MongoDB storage driver func (driver *MongoDBDriver) Terminate() error { return driver.client.Disconnect(context.TODO()) } // ListIDs returns a list of all existing paste IDs func (driver *MongoDBDriver) ListIDs() ([]string, error) { // Define the collection to use for this database operation collection := driver.client.Database(driver.database).Collection(driver.collection) // Define the context for the following database operation ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) defer cancel() // Retrieve all paste documents result, err := collection.Find(ctx, bson.M{}) if err != nil { return nil, err } // Decode all paste documents var pasteSlice []shared.Paste err = result.All(ctx, &pasteSlice) if err != nil { return nil, err } // Read and return the IDs of all paste objects var ids []string for _, paste := range pasteSlice { ids = append(ids, paste.ID) } return ids, nil } // Get loads a paste func (driver *MongoDBDriver) Get(id string) (*shared.Paste, error) { // Define the collection to use for this database operation collection := driver.client.Database(driver.database).Collection(driver.collection) // Define the context for the following database operation ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) defer cancel() // Try to retrieve the corresponding paste document filter := bson.M{"_id": id} result := collection.FindOne(ctx, filter) err := result.Err() if err != nil { if err == mongo.ErrNoDocuments { return nil, nil } return nil, err } // Return the retrieved paste object paste := new(shared.Paste) err = result.Decode(paste) if err != nil { return nil, err } return paste, nil } // Save saves a paste func (driver *MongoDBDriver) Save(paste *shared.Paste) error { // Define the collection to use for this database operation collection := driver.client.Database(driver.database).Collection(driver.collection) // Define the context for the following database operation ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) defer cancel() // Insert the paste object _, err := collection.InsertOne(ctx, paste) return err } // Delete deletes a paste func (driver *MongoDBDriver) Delete(id string) error { // Define the collection to use for this database operation collection := driver.client.Database(driver.database).Collection(driver.collection) // Define the context for the following database operation ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second) defer cancel() // Delete the document filter := bson.M{"_id": id} _, err := collection.DeleteOne(ctx, filter) return err } // Cleanup cleans up the expired pastes func (driver *MongoDBDriver) Cleanup() (int, error) { // Retrieve all paste IDs ids, err := driver.ListIDs() if err != nil { return 0, err } // Define the amount of deleted items deleted := 0 // Loop through all pastes for _, id := range ids { // Retrieve the paste object paste, err := driver.Get(id) if err != nil { return 0, err } // Delete the paste if it is expired lifetime := config.Current.AutoDelete.Lifetime if paste.AutoDelete && paste.Created+int64(lifetime.Seconds()) < time.Now().Unix() { err = driver.Delete(id) if err != nil { return 0, err } deleted++ } } return deleted, nil }