Merge pull request #40 from shogo82148/implement-driver-context

implement driver.DriverContext

Author: shogo82148

fakedb_go110_test.go

@@ -0,0 +1,101 @@
+// +build go1.10
+
+package proxy
+
+import (
+	"bytes"
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+)
+
+type fakeDriverCtx fakeDriver
+type fakeConnector struct {
+	driver *fakeDriverCtx
+	opt    *fakeConnOption
+	db     *fakeDB
+}
+
+var fdriverctx = &fakeDriver{}
+var _ driver.DriverContext = &fakeDriverCtx{}
+var _ driver.Connector = &fakeConnector{}
+
+func init() {
+	sql.Register("fakedbctx", fdriverctx)
+}
+
+func (d *fakeDriverCtx) Open(name string) (driver.Conn, error) {
+	return nil, errors.New("not implemented")
+}
+
+func (d *fakeDriverCtx) OpenConnector(name string) (driver.Connector, error) {
+	var opt fakeConnOption
+	err := json.Unmarshal([]byte(name), &opt)
+	if err != nil {
+		return nil, err
+	}
+
+	// validate options
+	switch opt.ConnType {
+	case "", "fakeConn", "fakeConnExt", "fakeConnCtx":
+		// validation OK
+	default:
+		return nil, errors.New("known ConnType")
+	}
+
+	d.mu.Lock()
+	defer d.mu.Unlock()
+	db, ok := d.dbs[opt.Name]
+	if !ok {
+		db = &fakeDB{
+			log: &bytes.Buffer{},
+		}
+		if d.dbs == nil {
+			d.dbs = make(map[string]*fakeDB)
+		}
+		d.dbs[name] = db
+	}
+
+	return &fakeConnector{
+		driver: d,
+		opt:    &opt,
+		db:     db,
+	}, nil
+}
+
+func (d *fakeDriverCtx) DB(name string) *fakeDB {
+	d.mu.Lock()
+	defer d.mu.Unlock()
+	return d.dbs[name]
+}
+
+func (c *fakeConnector) Connect(ctx context.Context) (driver.Conn, error) {
+	var conn driver.Conn
+	switch c.opt.ConnType {
+	case "", "fakeConn":
+		conn = &fakeConn{
+			db:  c.db,
+			opt: c.opt,
+		}
+	case "fakeConnExt":
+		conn = &fakeConnExt{
+			db:  c.db,
+			opt: c.opt,
+		}
+	case "fakeConnCtx":
+		conn = &fakeConnCtx{
+			db:  c.db,
+			opt: c.opt,
+		}
+	default:
+		return nil, errors.New("known ConnType")
+	}
+
+	return conn, nil
+}
+
+func (c *fakeConnector) Driver() driver.Driver {
+	return c.driver
+}