137 lines
3.2 KiB
Go
137 lines
3.2 KiB
Go
package storage
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import (
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"context"
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"errors"
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"log"
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"time"
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"weather-data/config"
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"github.com/google/uuid"
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"go.mongodb.org/mongo-driver/bson"
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"go.mongodb.org/mongo-driver/mongo"
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"go.mongodb.org/mongo-driver/mongo/options"
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"go.mongodb.org/mongo-driver/mongo/readpref"
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)
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type mongodbSensorRegistry struct {
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weatherSensors []*WeatherSensor
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sensorCollection *mongo.Collection
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client *mongo.Client
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}
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func NewMongodbSensorRegistry(mongoCfg config.MongoConfig) (*mongodbSensorRegistry, error) {
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sensorRegistry := new(mongodbSensorRegistry)
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options := options.Client().ApplyURI(mongoCfg.Host).SetAuth(options.Credential{Username: mongoCfg.Username, Password: mongoCfg.Password})
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client, err := mongo.NewClient(options)
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if err != nil {
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return nil, err
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}
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sensorRegistry.client = client
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ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
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err = client.Connect(ctx)
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if err != nil {
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log.Fatal(err)
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return nil, err
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}
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err = client.Ping(ctx, readpref.Primary())
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if err != nil {
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log.Fatal(err)
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return nil, err
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}
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weathersensorsDB := client.Database(mongoCfg.Database)
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sensorRegistry.sensorCollection = weathersensorsDB.Collection(mongoCfg.Collection)
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log.Print("successfully created mongodb connection")
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return sensorRegistry, nil
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}
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func (registry *mongodbSensorRegistry) RegisterSensorByName(name string) (*WeatherSensor, error) {
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exist, err := registry.ExistSensorName(name)
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if err != nil {
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return nil, err
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}
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if exist {
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return nil, errors.New("sensorname already exists")
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}
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sensor := new(WeatherSensor)
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sensor.Name = name
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sensor.Id = uuid.New()
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ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
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_, err = registry.sensorCollection.InsertOne(ctx, sensor)
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return sensor, err
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}
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func (registry *mongodbSensorRegistry) ExistSensorName(name string) (bool, error) {
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sensors, err := registry.GetSensors()
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if err != nil {
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log.Fatal(err)
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return false, err
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}
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for _, s := range sensors {
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if s.Name == name {
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return true, nil
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}
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}
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return false, nil
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}
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func (registry *mongodbSensorRegistry) ResolveSensorById(sensorId uuid.UUID) (*WeatherSensor, error) {
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sensors, err := registry.GetSensors()
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if err != nil {
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log.Fatal(err)
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return nil, err
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}
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for _, s := range sensors {
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if s.Id == sensorId {
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return s, nil
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}
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}
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return nil, errors.New("sensor does not exist")
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}
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func (registry *mongodbSensorRegistry) ExistSensor(sensor *WeatherSensor) (bool, error) {
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sensors, err := registry.GetSensors()
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if err != nil {
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log.Fatal(err)
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return false, err
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}
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for _, s := range sensors {
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if s.Id == sensor.Id {
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return true, nil
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}
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}
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return false, nil
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}
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func (registry *mongodbSensorRegistry) GetSensors() ([]*WeatherSensor, error) {
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ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
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cursor, err := registry.sensorCollection.Find(ctx, bson.M{})
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if err != nil {
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log.Fatal(err)
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return nil, err
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}
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var readData []*WeatherSensor
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if err = cursor.All(ctx, &readData); err != nil {
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log.Fatal(err)
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return nil, err
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}
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return readData, nil
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}
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func (registry *mongodbSensorRegistry) Close() error {
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ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
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err := registry.client.Disconnect(ctx)
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return err
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}
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