yo_db.yo.go

// Code generated by yo. DO NOT EDIT.

// Package models contains the types.
package models

import (
	"context"
	"errors"
	"fmt"
	"strconv"

	"cloud.google.com/go/spanner"
	"github.com/googleapis/gax-go/v2/apierror"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/status"
)

// YODB is the common interface for database operations.
type YODB interface {
	ReadRow(ctx context.Context, table string, key spanner.Key, columns []string) (*spanner.Row, error)
	Read(ctx context.Context, table string, keys spanner.KeySet, columns []string) *spanner.RowIterator
	ReadUsingIndex(ctx context.Context, table, index string, keys spanner.KeySet, columns []string) (ri *spanner.RowIterator)
	Query(ctx context.Context, statement spanner.Statement) *spanner.RowIterator
}

// YOLog provides the log func used by generated queries.
var YOLog = func(context.Context, string, ...interface{}) {}

func newError(method, table string, err error) error {
	code := spanner.ErrCode(err)
	return newErrorWithCode(code, method, table, err)
}

func newErrorWithCode(code codes.Code, method, table string, err error) error {
	return &yoError{
		method: method,
		table:  table,
		err:    err,
		code:   code,
	}
}

type yoError struct {
	err    error
	method string
	table  string
	code   codes.Code
}

func (e yoError) Error() string {
	return fmt.Sprintf("yo error in %s(%s): %v", e.method, e.table, e.err)
}

func (e yoError) Unwrap() error {
	return e.err
}

func (e yoError) DBTableName() string {
	return e.table
}

// GRPCStatus implements a conversion to a gRPC status using `status.Convert(error)`.
// If the error is originated from the Spanner library, this returns a gRPC status of
// the original error. It may contain details of the status such as RetryInfo.
func (e yoError) GRPCStatus() *status.Status {
	var ae *apierror.APIError
	if errors.As(e.err, &ae) {
		return status.Convert(ae)
	}

	return status.New(e.code, e.Error())
}

func (e yoError) Timeout() bool   { return e.code == codes.DeadlineExceeded }
func (e yoError) Temporary() bool { return e.code == codes.DeadlineExceeded }
func (e yoError) NotFound() bool  { return e.code == codes.NotFound }

// yoEncode encodes primitive types that spanner library does not support into spanner types before
// passing to spanner functions. Suppotted primitive types and user defined types that implement
// spanner.Encoder interface are handled in encoding phase inside spanner libirary.
func yoEncode(v interface{}) interface{} {
	switch vv := v.(type) {
	case int8:
		return int64(vv)
	case uint8:
		return int64(vv)
	case int16:
		return int64(vv)
	case uint16:
		return int64(vv)
	case int32:
		return int64(vv)
	case uint32:
		return int64(vv)
	case uint64:
		return int64(vv)
	default:
		return v
	}
}

// yoDecode wraps primitive types that spanner library does not support to decode from spanner types
// by yoPrimitiveDecoder before passing to spanner functions. Supported primitive types and
// user defined types that implement spanner.Decoder interface are handled in decoding phase inside
// spanner libirary.
func yoDecode(ptr interface{}) interface{} {
	switch ptr.(type) {
	case *int8, *uint8, *int16, *uint16, *int32, *uint32, *uint64:
		return &yoPrimitiveDecoder{val: ptr}
	default:
		return ptr
	}
}

type yoPrimitiveDecoder struct {
	val interface{}
}

func (y *yoPrimitiveDecoder) DecodeSpanner(val interface{}) error {
	strVal, ok := val.(string)
	if !ok {
		return spanner.ToSpannerError(status.Errorf(codes.FailedPrecondition, "failed to decode customField: %T(%v)", val, val))
	}

	intVal, err := strconv.ParseInt(strVal, 10, 64)
	if err != nil {
		return spanner.ToSpannerError(status.Errorf(codes.FailedPrecondition, "%v wasn't correctly encoded: <%v>", val, err))
	}

	switch vv := y.val.(type) {
	case *int8:
		*vv = int8(intVal)
	case *uint8:
		*vv = uint8(intVal)
	case *int16:
		*vv = int16(intVal)
	case *uint16:
		*vv = uint16(intVal)
	case *int32:
		*vv = int32(intVal)
	case *uint32:
		*vv = uint32(intVal)
	case *uint64:
		*vv = uint64(intVal)
	default:
		return status.Errorf(codes.Internal, "unexpected type for yoPrimitiveDecoder: %T", y.val)
	}

	return nil
}