/
client.go
95 lines (86 loc) · 2.02 KB
/
client.go
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// sean at shanghai
// 2021
// dnslite
package main
import (
"context"
"log"
"time"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/bson/primitive"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
type MongoClient struct {
Conf *MongoClientConfig
C *mongo.Collection
}
type MongoClientConfig struct {
DB string
Coll string
Addr string
}
func NewMongoClient(conf *MongoClientConfig) *MongoClient {
client, err := mongo.NewClient(options.Client().
ApplyURI(conf.Addr).
SetConnectTimeout(time.Second * 2).
SetHeartbeatInterval(time.Second * 10).
SetSocketTimeout(time.Second * 2).
SetServerSelectionTimeout(time.Second * 2))
if err != nil {
log.Println("new client error:", conf.Addr, err)
return nil
}
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
defer cancel()
err = client.Connect(ctx)
if err != nil {
log.Println("connect error:", err)
return nil
}
d := client.Database(conf.DB)
c := d.Collection(conf.Coll)
return &MongoClient{
Conf: conf,
C: c,
}
}
func (mc *MongoClient) Insert(data DNSRecord) error {
ctx := context.Background()
data.Id = primitive.NewObjectID().Hex()
_, err := mc.C.InsertOne(ctx, data)
if err != nil {
log.Println("insert data error:", data, err)
return err
}
return nil
}
func (mc *MongoClient) Find(name string, tp uint16) ([]DNSRecord, error) {
ctx := context.Background()
filter := bson.M{"name": name, "type": tp}
c, err := mc.C.Find(ctx, filter)
if err != nil {
log.Println("find error:", err)
return nil, err
}
var ret []DNSRecord
err = c.All(ctx, &ret)
if err != nil {
if err == mongo.ErrNoDocuments {
return nil, nil
}
log.Println("find one error:", filter, err)
return nil, err
}
return ret, nil
}
func (mc *MongoClient) Del(name string, tp uint16) error {
ctx := context.Background()
filter := bson.M{"name": name, "type": tp}
_, err := mc.C.DeleteOne(ctx, filter)
if err != nil {
log.Println("delete one error:", filter, err)
return err
}
return nil
}