package main
import (
"context"
"time"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
type mongoClient struct {
dbName, colName string
client *mongo.Client
col *mongo.Collection
}
func (mc *mongoClient) init(dbName, colName string) error {
var err error
if err = mc.Connect(dbName, colName); err != nil {
return err
}
if err = mc.Drop(); err != nil {
return err
}
return nil
}
func (mc *mongoClient) Connect(dbName, colName string) error {
var err error
mc.client, err = mongo.NewClient(options.Client().ApplyURI("mongodb://localhost:27017"))
if err != nil {
return err
}
ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
err = mc.client.Connect(ctx)
if err != nil {
return err
}
mc.col = mc.client.Database(dbName).Collection(colName)
mc.dbName = dbName
mc.colName = colName
return nil
}
func (mc *mongoClient) InsertOne(document interface{}) error {
_, err := mc.col.InsertOne(context.Background(), document)
return err
}
func (mc *mongoClient) UpdateOne(filter, update interface{}) error {
_, err := mc.col.UpdateOne(context.Background(), filter, update)
return err
}
func (mc *mongoClient) UpdateMany(filter, update interface{}) error {
_, err := mc.col.UpdateMany(context.Background(), filter, update)
return err
}
func (mc *mongoClient) Finddoc(filter bson.M) ([]bson.M, error) {
cur, err := mc.col.Find(context.Background(), filter)
if err != nil {
return nil, err
}
var results []bson.M
err = cur.All(context.Background(), &results)
return results, err
}
func (mc *mongoClient) FindOneAndDelete(filter bson.M) (bson.M, error) {
res := mc.col.FindOneAndDelete(context.Background(), filter)
var result bson.M
err := res.Decode(&result)
return result, err
}
func (mc *mongoClient) Drop() error {
return mc.col.Drop(context.Background())
}
func (mc *mongoClient) Disconnect() error {
err := mc.client.Disconnect(context.Background())
if err != nil {
return err
}
mc.col = nil
mc.client = nil
mc.dbName = ""
mc.colName = ""
return nil
}
|
