Set up mongodb c

.gitignore

@@ -2,3 +2,4 @@ cheqbooq
 exec-cheqbooq
 **/*.sw*
 vendor
+testdata

config/config.go

@@ -6,8 +6,10 @@ import (
 )
 
 var (
-	Port   string
-	Public string
+	Port      string
+	Public    string
+	StoreAddr string
+	StoreNS   string
 )
 
 func init() {
@@ -18,9 +20,13 @@ func New() {
 	as := args.NewArgSet()
 	as.Append(args.INT, "p", "port to listen on", 52222)
 	as.Append(args.STRING, "d", "dir with public files", "./public")
+	as.Append(args.STRING, "s", "mongodb address", "localhost:27017")
+	as.Append(args.STRING, "ns", "mongodb database", "cheqbooq")
 	if err := as.Parse(); err != nil {
 		panic(err)
 	}
 	Port = fmt.Sprintf(":%d", as.GetInt("p"))
 	Public = as.GetString("d")
+	StoreAddr = as.GetString("s")
+	StoreNS = as.GetString("ns")
 }

storage/mongo.go

@@ -0,0 +1,77 @@
+package storage
+
+import (
+	"context"
+	"fmt"
+	"local/cheqbooq/config"
+	"strings"
+	"time"
+
+	"go.mongodb.org/mongo-driver/mongo"
+	"go.mongodb.org/mongo-driver/mongo/options"
+)
+
+type Mongo struct {
+	client *mongo.Client
+}
+
+func NewMongo() (*Mongo, error) {
+	ctx, can := context.WithTimeout(context.Background(), time.Second*5)
+	defer can()
+
+	opt := options.Client()
+	opt.ApplyURI(fmt.Sprintf("mongodb://%s", strings.TrimPrefix(config.StoreAddr, "mongodb://")))
+
+	client, err := mongo.Connect(ctx, opt)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Mongo{
+		client: client,
+	}, client.Ping(ctx, nil)
+}
+
+func (m *Mongo) Close() error {
+	return m.client.Disconnect(context.TODO())
+}
+
+func (m *Mongo) Account() *mongo.Collection {
+	return m.Database(config.StoreNS).Collection("account")
+}
+
+func (m *Mongo) Balance() *mongo.Collection {
+	return m.Database(config.StoreNS).Collection("balance")
+}
+
+func (m *Mongo) Transaction() *mongo.Collection {
+	return m.Database(config.StoreNS).Collection("transaction")
+}
+
+func (m *Mongo) Find(c *mongo.Collection, where interface{}, next func() interface{}) error {
+	ctx, can := context.WithCancel(context.TODO())
+	defer can()
+
+	cur, err := c.Find(ctx, where, options.Find())
+	if err != nil {
+		return err
+	}
+	defer cur.Close(ctx)
+
+	for cur.Next(ctx) {
+		ptr := next()
+		if err := cur.Decode(ptr); err != nil {
+			return err
+		}
+	}
+
+	return cur.Err()
+}
+
+func (m *Mongo) Upsert(c *mongo.Collection, where, op interface{}) error {
+	ctx, can := context.WithCancel(context.TODO())
+	defer can()
+
+	_, err := c.UpdateMany(ctx, where, op, options.Update().SetUpsert(true))
+	return err
+}

storage/storage.go

@@ -0,0 +1,7 @@
+package storage
+
+type Storage struct {
+}
+
+func New() (*Storage, error) {
+}