modelRT/diagram/topologic_set.go

package diagram

import (
	"errors"
	"fmt"
	"sync"
)

var GraphOverview sync.Map

func GetGraphMap(key string) (*Graph, error) {
	value, ok := GraphOverview.Load(key)
	if !ok {
		return nil, fmt.Errorf("can not find graph by pageID:%s", key)
	}
	graph, ok := value.(*Graph)
	if !ok {
		return nil, errors.New("convert to graph struct failed")
	}
	return graph, nil
}