完成autostore.
TODO: 替换old store 类.
This commit is contained in:
eson
parent
1590fa0c82
commit
7849d09a18
69
autostore.go
69
autostore.go
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@ -10,6 +10,8 @@ import (
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"time"
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)
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/*Store 结构体. 必须使用tag. field 数据库字段标签 uid 唯一id字段标签必须存在
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*/
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type Store struct {
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db *sql.DB
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}
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@ -35,6 +37,7 @@ func NewStore(uri string) *Store {
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return s
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}
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// Table 选择表.
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func (store *Store) Table(name string) *Table {
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table := &Table{store: store}
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table.name = name
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@ -42,9 +45,11 @@ func (store *Store) Table(name string) *Table {
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table.insertsql = `INSERT INTO ` + table.name + `(%s) values(%s)`
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table.updatesql = `UPDATE ` + table.name + ` SET %s WHERE %s = ?`
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// table.selectsql = `FROM ` + table.name + `WHERE operator`
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table.selectsql = `SELECT %s FROM ` + table.name + ` WHERE %s `
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return table
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}
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// Queue mysql 队列结构
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type Queue struct {
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table *Table
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obj reflect.Type
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@ -66,6 +71,7 @@ const (
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OpERROR OperatorType = "10000"
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)
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// Queue 根据Table生成一个队列. 处理结构. 每次弹出一个 obj 是要处理的结构体 自定义的whereCondition条件
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func (t *Table) Queue(obj interface{}, whereCondition string) *Queue {
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q := &Queue{}
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q.condition = whereCondition
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@ -88,6 +94,68 @@ func (t *Table) Queue(obj interface{}, whereCondition string) *Queue {
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return q
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}
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// Pop 队列弹出一个数据(任务). 参考队列处理 不支持嵌套.
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func (queue *Queue) Pop() (result interface{}, err error) {
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db := queue.table.store.db
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tx, err := db.Begin()
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if err != nil {
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return nil, err
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}
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defer func() {
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cerr := tx.Commit()
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if cerr != nil {
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log.Println(cerr)
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log.Println(tx.Rollback())
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}
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}()
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selectsql := `SELECT ` + queue.selected + ` FROM ` + queue.table.name + ` WHERE ` + queue.condition + " limit 1 for update"
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rows, err := tx.Query(selectsql)
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if err != nil {
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return nil, fmt.Errorf("table: %s queue is empty", queue.table.name)
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}
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var fields = make([]interface{}, queue.obj.NumField())
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for i := range fields {
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var iv interface{}
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fields[i] = &iv
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}
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if rows.Next() {
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err = rows.Scan(fields...)
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if err != nil {
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return nil, err
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}
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}
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columntypes, err := rows.ColumnTypes()
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if err != nil {
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return nil, err
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}
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if err = rows.Close(); err != nil {
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return nil, err
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}
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_, err = tx.Exec("UPDATE "+queue.table.name+" SET operator = "+string(OpWAIT)+" WHERE "+queue.uidname+" = ?", fields[queue.uididx])
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if err != nil {
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log.Println(err)
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return nil, err
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}
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obj := reflect.New(queue.obj).Elem()
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for i := 0; i < obj.NumField(); i++ {
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field := obj.Field(i)
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convert(*fields[i].(*interface{}), field, columntypes[i])
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}
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return obj.Addr().Interface(), err
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}
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// Insert nil 不插入. 不支持嵌套.
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func (t *Table) Insert(obj interface{}) error {
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ov := reflect.ValueOf(obj).Elem()
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ot := reflect.TypeOf(obj)
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@ -130,6 +198,7 @@ func (t *Table) Insert(obj interface{}) error {
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return err
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}
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// Update 结构体更新
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func (t *Table) Update(obj interface{}) error {
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ov := reflect.ValueOf(obj).Elem()
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@ -3,79 +3,13 @@ package intimate
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import (
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"database/sql"
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"encoding/json"
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"fmt"
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"log"
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"reflect"
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"testing"
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"time"
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"github.com/davecgh/go-spew/spew"
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)
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func (queue *Queue) Pop() (result interface{}, err error) {
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db := queue.table.store.db
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tx, err := db.Begin()
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if err != nil {
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return nil, err
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}
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defer func() {
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cerr := tx.Commit()
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if cerr != nil {
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log.Println(cerr)
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log.Println(tx.Rollback())
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}
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}()
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selectsql := `SELECT ` + queue.selected + ` FROM ` + queue.table.name + ` WHERE ` + queue.condition + " limit 1 for update"
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rows, err := tx.Query(selectsql)
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// err = rows.Err()
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if err != nil {
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return nil, fmt.Errorf("table: %s queue is empty", queue.table.name)
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}
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var fields = make([]interface{}, queue.obj.NumField())
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for i := range fields {
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var iv interface{}
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fields[i] = &iv
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}
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// if !rows.Next() {
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// return nil, fmt.Errorf("table: %s queue is empty", queue.table.name)
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// }
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if rows.Next() {
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err = rows.Scan(fields...)
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if err != nil {
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return nil, err
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}
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}
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columntypes, err := rows.ColumnTypes()
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if err != nil {
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return nil, err
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}
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if err = rows.Close(); err != nil {
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return nil, err
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}
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_, err = tx.Exec("UPDATE "+queue.table.name+" SET operator = "+string(OpWAIT)+" WHERE "+queue.uidname+" = ?", fields[queue.uididx])
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if err != nil {
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log.Println(err)
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return nil, err
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}
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obj := reflect.New(queue.obj).Elem()
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for i := 0; i < obj.NumField(); i++ {
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field := obj.Field(i)
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convert(*fields[i].(*interface{}), field, columntypes[i])
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}
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return obj.Addr().Interface(), err
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}
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func TestAutoStore(t *testing.T) {
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func estAutoStore(t *testing.T) {
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uri := "root:@tcp(127.0.0.1:4000)/test?parseTime=true&loc=Local&charset=utf8mb4&collation=utf8mb4_unicode_ci"
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store := NewStore(uri)
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