/
mongo.go
71 lines (55 loc) · 1.53 KB
/
mongo.go
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package repository
import (
"context"
"github.com/rs/zerolog/log"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
var mongoCli *mongo.Client
func OpenMongoDB(url, dbName string) *mongo.Database {
clientOpts := options.Client().
ApplyURI(url).
SetMaxPoolSize(30)
client, err := mongo.Connect(context.Background(), clientOpts)
if err != nil {
log.Fatal().Err(err).Msg("fail to connect mongodb")
}
if err := client.Ping(context.Background(), nil); err != nil {
log.Fatal().Err(err).Msg("fail to ping to mongodb")
}
mongoCli = client
return client.Database(dbName)
}
func CloseMongoDB() {
_ = mongoCli.Disconnect(context.Background())
}
func MongoTransaction(txTask func(sc mongo.SessionContext) error) error {
ctx := context.Background()
session, err := mongoCli.StartSession()
if err != nil {
log.Error().Err(err).Msg("fail to start mongo session")
return err
}
defer session.EndSession(ctx)
if err := session.StartTransaction(); err != nil {
log.Error().Err(err).Msg("fail to start mongo tx")
return err
}
if err := mongo.WithSession(ctx, session, func(sc mongo.SessionContext) error {
if err := txTask(sc); err != nil {
if abortErr := session.AbortTransaction(sc); err != nil {
log.Error().Err(err).Msg("mongo tx abort err")
return abortErr
}
return err
}
if commitErr := session.CommitTransaction(sc); commitErr != nil {
log.Error().Err(err).Msg("mongo tx commit err")
return commitErr
}
return nil
}); err != nil {
return err
}
return nil
}