Create & Init Project...

app/infra/canal/dao/BUILD

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+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "dao.go",
+        "mysql.go",
+    ],
+    importpath = "go-common/app/infra/canal/dao",
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+    deps = [
+        "//app/infra/canal/conf:go_default_library",
+        "//app/infra/canal/model:go_default_library",
+        "//library/database/sql:go_default_library",
+        "//library/log:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = [
+        "dao_test.go",
+        "mysql_test.go",
+    ],
+    embed = [":go_default_library"],
+    rundir = ".",
+    tags = ["automanaged"],
+    deps = [
+        "//app/infra/canal/conf:go_default_library",
+        "//app/infra/canal/model:go_default_library",
+        "//vendor/github.com/smartystreets/goconvey/convey:go_default_library",
+    ],
+)

app/infra/canal/dao/dao.go

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+package dao
+
+import (
+	"go-common/app/infra/canal/conf"
+	"go-common/library/database/sql"
+)
+
+// Dao dao
+type Dao struct {
+	// config
+	c *conf.Config
+	// db
+	db *sql.DB
+}
+
+// New dao new
+func New(c *conf.Config) (d *Dao) {
+	d = &Dao{
+		c:  c,
+		db: sql.NewMySQL(c.DB),
+	}
+	return
+}

app/infra/canal/dao/dao_test.go

@@ -0,0 +1,34 @@
+package dao
+
+import (
+	"flag"
+	"os"
+	"testing"
+
+	"go-common/app/infra/canal/conf"
+)
+
+var d *Dao
+
+func TestMain(m *testing.M) {
+	if os.Getenv("DEPLOY_ENV") != "" {
+		flag.Set("app_id", "")
+		flag.Set("conf_token", "")
+		flag.Set("tree_id", "")
+		flag.Set("conf_version", "docker-1")
+		flag.Set("deploy_env", "uat")
+		flag.Set("conf_host", "config.bilibili.co")
+		flag.Set("conf_path", "/tmp")
+		flag.Set("region", "sh")
+		flag.Set("zone", "sh001")
+	} else {
+		flag.Set("conf", "../cmd/canal-test.toml")
+	}
+	flag.Parse()
+	if err := conf.Init(); err != nil {
+		panic(err)
+	}
+	d = New(conf.Conf)
+	m.Run()
+	os.Exit(0)
+}

app/infra/canal/dao/mysql.go

@@ -0,0 +1,40 @@
+package dao
+
+import (
+	"context"
+
+	"go-common/app/infra/canal/model"
+	"go-common/library/database/sql"
+	"go-common/library/log"
+)
+
+const (
+	_tidbPositonSQL       = "SELECT name, cluster_id, offset, tso FROM  tidb_info WHERE name = ?"
+	_updateTidbPositonSQL = "INSERT INTO tidb_info(name, cluster_id, offset, tso) VALUES(?,?,?,?) ON DUPLICATE KEY UPDATE offset = ?, tso = ?"
+)
+
+// TiDBPosition get tidb positon
+func (d *Dao) TiDBPosition(c context.Context, name string) (res *model.TiDBInfo, err error) {
+	res = &model.TiDBInfo{}
+	if err = d.db.QueryRow(c, _tidbPositonSQL, name).Scan(&res.Name, &res.ClusterID, &res.Offset, &res.CommitTS); err != nil {
+		if err == sql.ErrNoRows {
+			res = nil
+			err = nil
+			return
+		}
+		log.Error("db.TidbPosition.Query error(%v,%v,%v)", _tidbPositonSQL, name, err)
+		return
+	}
+	return
+}
+
+// UpdateTiDBPosition update tidb position
+func (d *Dao) UpdateTiDBPosition(c context.Context, info *model.TiDBInfo) (err error) {
+	if info == nil {
+		return
+	}
+	if _, err = d.db.Exec(c, _updateTidbPositonSQL, info.Name, info.ClusterID, info.Offset, info.CommitTS, info.Offset, info.CommitTS); err != nil {
+		log.Error("db.UpdateTiDBPosition.Exec error(%v,%+v,%v)", _updateTidbPositonSQL, info, err)
+	}
+	return
+}

app/infra/canal/dao/mysql_test.go

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+package dao
+
+import (
+	"context"
+	"testing"
+
+	"go-common/app/infra/canal/model"
+
+	"github.com/smartystreets/goconvey/convey"
+)
+
+func TestDao_TiDBPosition(t *testing.T) {
+	info := &model.TiDBInfo{
+		Name:      "test",
+		ClusterID: "1",
+		Offset:    2,
+		CommitTS:  403845808070328359,
+	}
+	convey.Convey("add position", t, func(ctx convey.C) {
+		err := d.UpdateTiDBPosition(context.Background(), info)
+		ctx.So(err, convey.ShouldBeNil)
+		ctx.Convey("get position", func(ctx convey.C) {
+			gotRes, err := d.TiDBPosition(context.Background(), info.Name)
+			ctx.So(err, convey.ShouldBeNil)
+			ctx.So(gotRes, convey.ShouldResemble, info)
+		})
+	})
+}