Golang Conn.ReadN方法代碼示例

本文整理匯總了Golang中github.com/housinganywhere/pg/internal/pool.Conn.ReadN方法的典型用法代碼示例。如果您正苦於以下問題：Golang Conn.ReadN方法的具體用法？Golang Conn.ReadN怎麽用？Golang Conn.ReadN使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類github.com/housinganywhere/pg/internal/pool.Conn的用法示例。

在下文中一共展示了Conn.ReadN方法的14個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: readCopyOutResponse

func readCopyOutResponse(cn *pool.Conn) error {
	for {
		c, msgLen, err := readMessageType(cn)
		if err != nil {
			return err
		}
		switch c {
		case copyOutResponseMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return err
			}
			return nil
		case errorResponseMsg:
			e, err := readError(cn)
			if err != nil {
				return err
			}
			return e
		case noticeResponseMsg:
			if err := logNotice(cn, msgLen); err != nil {
				return err
			}
		case parameterStatusMsg:
			if err := logParameterStatus(cn, msgLen); err != nil {
				return err
			}
		default:
			return fmt.Errorf("pg: readCopyOutResponse: unexpected message %#x", c)
		}
	}
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:32，代碼來源:messages.go

示例2: readInt32

func readInt32(cn *pool.Conn) (int32, error) {
	b, err := cn.ReadN(4)
	if err != nil {
		return 0, err
	}
	return int32(binary.BigEndian.Uint32(b)), nil
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:7，代碼來源:messages.go

示例3: startup

func startup(cn *pool.Conn, user, password, database string) error {
	writeStartupMsg(cn.Wr, user, database)
	if err := cn.Wr.Flush(); err != nil {
		return err
	}

	for {
		c, msgLen, err := readMessageType(cn)
		if err != nil {
			return err
		}
		switch c {
		case backendKeyDataMsg:
			processId, err := readInt32(cn)
			if err != nil {
				return err
			}
			secretKey, err := readInt32(cn)
			if err != nil {
				return err
			}
			cn.ProcessId = processId
			cn.SecretKey = secretKey
		case parameterStatusMsg:
			if err := logParameterStatus(cn, msgLen); err != nil {
				return err
			}
		case authenticationOKMsg:
			if err := authenticate(cn, user, password); err != nil {
				return err
			}
		case readyForQueryMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return err
			}
			return nil
		case errorResponseMsg:
			e, err := readError(cn)
			if err != nil {
				return err
			}
			return e
		default:
			return fmt.Errorf("pg: unknown startup message response: %q", c)
		}
	}
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:48，代碼來源:messages.go

示例4: readNotification

func readNotification(cn *pool.Conn) (channel, payload string, err error) {
	for {
		c, msgLen, err := readMessageType(cn)
		if err != nil {
			return "", "", err
		}

		switch c {
		case commandCompleteMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return "", "", err
			}
		case readyForQueryMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return "", "", err
			}
		case errorResponseMsg:
			e, err := readError(cn)
			if err != nil {
				return "", "", err
			}
			return "", "", e
		case noticeResponseMsg:
			if err := logNotice(cn, msgLen); err != nil {
				return "", "", err
			}
		case notificationResponseMsg:
			_, err := readInt32(cn)
			if err != nil {
				return "", "", err
			}
			channel, err = readString(cn)
			if err != nil {
				return "", "", err
			}
			payload, err = readString(cn)
			if err != nil {
				return "", "", err
			}
			return channel, payload, nil
		default:
			return "", "", fmt.Errorf("pg: unexpected message %q", c)
		}
	}
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:47，代碼來源:messages.go

示例5: readParseDescribeSync

func readParseDescribeSync(cn *pool.Conn) (columns []string, e error) {
	for {
		c, msgLen, err := readMessageType(cn)
		if err != nil {
			return nil, err
		}
		switch c {
		case parseCompleteMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
		case rowDescriptionMsg: // Response to the DESCRIBE message.
			columns, err = readRowDescription(cn)
			if err != nil {
				return nil, err
			}
		case parameterDescriptionMsg: // Response to the DESCRIBE message.
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
		case noDataMsg: // Response to the DESCRIBE message.
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
		case readyForQueryMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
			return
		case errorResponseMsg:
			var err error
			e, err = readError(cn)
			if err != nil {
				return nil, err
			}
		case noticeResponseMsg:
			if err := logNotice(cn, msgLen); err != nil {
				return nil, err
			}
		case parameterStatusMsg:
			if err := logParameterStatus(cn, msgLen); err != nil {
				return nil, err
			}
		default:
			if e != nil {
				return nil, e
			}
			return nil, fmt.Errorf("pg: readParseDescribeSync: unexpected message %#x", c)
		}
	}
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:55，代碼來源:messages.go

示例6: readRowDescription

func readRowDescription(cn *pool.Conn) ([]string, error) {
	colNum, err := readInt16(cn)
	if err != nil {
		return nil, err
	}
	cols := make([]string, colNum)
	for i := int16(0); i < colNum; i++ {
		col, err := readString(cn)
		if err != nil {
			return nil, err
		}
		cols[i] = col
		if _, err := cn.ReadN(18); err != nil {
			return nil, err
		}
	}
	return cols, nil
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:18，代碼來源:messages.go

示例7: logParameterStatus

func logParameterStatus(cn *pool.Conn, msgLen int) error {
	if !glog.V(2) {
		_, err := cn.ReadN(msgLen)
		return err
	}

	name, err := readString(cn)
	if err != nil {
		return err
	}

	value, err := readString(cn)
	if err != nil {
		return err
	}

	glog.Infof("pg parameter status: %s=%q", name, value)
	return nil
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:19，代碼來源:messages.go

示例8: logNotice

func logNotice(cn *pool.Conn, msgLen int) error {
	if !glog.V(2) {
		_, err := cn.ReadN(msgLen)
		return err
	}

	var level string
	var logger func(string, ...interface{})
	for {
		c, err := cn.Rd.ReadByte()
		if err != nil {
			return err
		}
		if c == 0 {
			break
		}
		s, err := readString(cn)
		if err != nil {
			return err
		}

		switch c {
		case 'S':
			level = s
			switch level {
			case "DEBUG", "LOG", "INFO", "NOTICE":
				logger = glog.Infof
			case "WARNING":
				logger = glog.Warningf
			case "EXCEPTION":
				logger = glog.Errorf
			default:
				logger = glog.Fatalf
			}
		case 'M':
			logger("pg %s message: %s", level, s)
		}
	}

	return nil
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:41，代碼來源:messages.go

示例9: readReadyForQuery

func readReadyForQuery(cn *pool.Conn) (res types.Result, e error) {
	for {
		c, msgLen, err := readMessageType(cn)
		if err != nil {
			return nil, err
		}
		switch c {
		case commandCompleteMsg:
			b, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
			res = types.ParseResult(b)
		case readyForQueryMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
			return
		case errorResponseMsg:
			var err error
			e, err = readError(cn)
			if err != nil {
				return nil, err
			}
		case noticeResponseMsg:
			if err := logNotice(cn, msgLen); err != nil {
				return nil, err
			}
		case parameterStatusMsg:
			if err := logParameterStatus(cn, msgLen); err != nil {
				return nil, err
			}
		default:
			if e != nil {
				return nil, e
			}
			return nil, fmt.Errorf("pg: readReadyForQuery: unexpected message %#x", c)
		}
	}
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:41，代碼來源:messages.go

示例10: readBindMsg

func readBindMsg(cn *pool.Conn) (e error) {
	for {
		c, msgLen, err := readMessageType(cn)
		if err != nil {
			return err
		}
		switch c {
		case bindCompleteMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return err
			}
		case readyForQueryMsg: // This is response to the SYNC message.
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return err
			}
			return
		case errorResponseMsg:
			var err error
			e, err = readError(cn)
			if err != nil {
				return err
			}
		case noticeResponseMsg:
			if err := logNotice(cn, msgLen); err != nil {
				return err
			}
		case parameterStatusMsg:
			if err := logParameterStatus(cn, msgLen); err != nil {
				return err
			}
		default:
			if e != nil {
				return e
			}
			return fmt.Errorf("pg: readBindMsg: unexpected message %#x", c)
		}
	}
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:40，代碼來源:messages.go

示例11: readDataRow

func readDataRow(cn *pool.Conn, scanner orm.ColumnScanner, columns []string) (scanErr error) {
	colNum, err := readInt16(cn)
	if err != nil {
		return err
	}
	for colIdx := 0; colIdx < int(colNum); colIdx++ {
		l, err := readInt32(cn)
		if err != nil {
			return err
		}
		var b []byte
		if l != -1 {
			b, err = cn.ReadN(int(l))
			if err != nil {
				return err
			}
		}
		if err := scanner.ScanColumn(colIdx, columns[colIdx], b); err != nil {
			scanErr = err
		}

	}
	return scanErr
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:24，代碼來源:messages.go

示例12: readCopyData

func readCopyData(cn *pool.Conn, w io.WriteCloser) (types.Result, error) {
	defer w.Close()
	for {
		c, msgLen, err := readMessageType(cn)
		if err != nil {
			return nil, err
		}
		switch c {
		case copyDataMsg:
			b, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}

			_, err = w.Write(b)
			if err != nil {
				return nil, err
			}
		case copyDoneMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
		case commandCompleteMsg:
			b, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
			return types.ParseResult(b), nil
		case errorResponseMsg:
			e, err := readError(cn)
			if err != nil {
				return nil, err
			}
			return nil, e
		case noticeResponseMsg:
			if err := logNotice(cn, msgLen); err != nil {
				return nil, err
			}
		case parameterStatusMsg:
			if err := logParameterStatus(cn, msgLen); err != nil {
				return nil, err
			}
		default:
			return nil, fmt.Errorf("pg: readCopyData: unexpected message %#x", c)
		}
	}
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:48，代碼來源:messages.go

示例13: readExtQueryData

func readExtQueryData(cn *pool.Conn, mod interface{}, columns []string) (res types.Result, e error) {
	coll, ok := mod.(orm.Collection)
	if !ok {
		coll, e = orm.NewModel(mod)
		if e != nil {
			coll = Discard
		}
	}

	var model orm.ColumnScanner
	for {
		c, msgLen, err := readMessageType(cn)
		if err != nil {
			return nil, err
		}
		switch c {
		case bindCompleteMsg:
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
		case dataRowMsg:
			model = coll.NewModel()
			if err := readDataRow(cn, model, columns); err != nil {
				e = err
			}
			if err := coll.AddModel(model); err != nil {
				return nil, err
			}
		case commandCompleteMsg: // Response to the EXECUTE message.
			b, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
			res = types.ParseResult(b)
		case readyForQueryMsg: // Response to the SYNC message.
			_, err := cn.ReadN(msgLen)
			if err != nil {
				return nil, err
			}
			return
		case errorResponseMsg:
			var err error
			e, err = readError(cn)
			if err != nil {
				return nil, err
			}
		case noticeResponseMsg:
			if err := logNotice(cn, msgLen); err != nil {
				return nil, err
			}
		case parameterStatusMsg:
			if err := logParameterStatus(cn, msgLen); err != nil {
				return nil, err
			}
		default:
			if e != nil {
				return nil, e
			}
			return nil, fmt.Errorf("pg: readExtQueryData: unexpected message %#x", c)
		}
	}
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:63，代碼來源:messages.go

示例14: authenticate

func authenticate(cn *pool.Conn, user, password string) error {
	num, err := readInt32(cn)
	if err != nil {
		return err
	}
	switch num {
	case 0:
		return nil
	case 3:
		writePasswordMsg(cn.Wr, password)
		if err := cn.Wr.Flush(); err != nil {
			return err
		}

		c, _, err := readMessageType(cn)
		if err != nil {
			return err
		}
		switch c {
		case authenticationOKMsg:
			num, err := readInt32(cn)
			if err != nil {
				return err
			}
			if num != 0 {
				return fmt.Errorf("pg: unexpected authentication code: %d", num)
			}
			return nil
		case errorResponseMsg:
			e, err := readError(cn)
			if err != nil {
				return err
			}
			return e
		default:
			return fmt.Errorf("pg: unknown password message response: %q", c)
		}
	case 5:
		b, err := cn.ReadN(4)
		if err != nil {
			return err
		}

		secret := "md5" + md5s(md5s(password+user)+string(b))
		writePasswordMsg(cn.Wr, secret)
		if err := cn.Wr.Flush(); err != nil {
			return err
		}

		c, _, err := readMessageType(cn)
		if err != nil {
			return err
		}
		switch c {
		case authenticationOKMsg:
			num, err := readInt32(cn)
			if err != nil {
				return err
			}
			if num != 0 {
				return fmt.Errorf("pg: unexpected authentication code: %d", num)
			}
			return nil
		case errorResponseMsg:
			e, err := readError(cn)
			if err != nil {
				return err
			}
			return e
		default:
			return fmt.Errorf("pg: unknown password message response: %q", c)
		}
	default:
		return fmt.Errorf("pg: unknown authentication message response: %d", num)
	}
}

開發者ID:housinganywhere，項目名稱:pg，代碼行數:76，代碼來源:messages.go

注：本文中的github.com/housinganywhere/pg/internal/pool.Conn.ReadN方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。