/
mongodb.go
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/
mongodb.go
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/*
* Copyright 2023 Caio Matheus Marcatti Calimério
*
* 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"
"sync"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
"github.com/caiomarcatti12/nanogo/v2/config/env"
"github.com/caiomarcatti12/nanogo/v2/config/log"
)
var (
clientInstance *mongo.Client
once sync.Once
err error
)
func ConnectMongoDB() (*mongo.Database, error) {
once.Do(func() {
mongoURI := env.GetEnv("MONGO_URI", "")
var clientOptions *options.ClientOptions
if mongoURI != "" {
clientOptions = options.Client().ApplyURI(mongoURI)
} else {
dbnameAuth := env.GetEnv("MONGO_AUTH_DBNAME", "admin")
username := env.GetEnv("MONGO_USERNAME")
password := env.GetEnv("MONGO_PASSWORD")
host := env.GetEnv("MONGO_HOST")
port := env.GetEnv("MONGO_PORT", "27017")
connectionURI := fmt.Sprintf("mongodb://%s:%s@%s:%d", username, password, host, port)
clientOptions = options.Client().ApplyURI(connectionURI).SetAuth(options.Credential{AuthSource: dbnameAuth})
}
clientInstance, err = mongo.Connect(context.Background(), clientOptions)
log.Info("Connected to MongoDB!")
})
if err != nil {
return nil, err
}
dbname := env.GetEnv("MONGO_DBNAME")
return clientInstance.Database(dbname), nil
}