86 lines
2.6 KiB
Go
86 lines
2.6 KiB
Go
// Package database define database operation functions
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package database
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import (
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"context"
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"time"
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"modelRT/diagram"
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"modelRT/orm"
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"github.com/gofrs/uuid"
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"go.uber.org/zap"
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"gorm.io/gorm/clause"
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)
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var recursiveSQL = `WITH RECURSIVE recursive_tree as (
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SELECT uuid_from,uuid_to,page_id,flag
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FROM "Topologic"
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WHERE uuid_from is null and page_id = ?
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UNION ALL
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SELECT t.uuid_from,t.uuid_to,t.page_id,t.flag
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FROM "Topologic" t
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JOIN recursive_tree rt ON t.uuid_from = rt.uuid_to
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)
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SELECT * FROM recursive_tree;`
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// QueryTopologicByPageID return the topologic info of the circuit diagram query by pageID
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func QueryTopologicByPageID(ctx context.Context, logger *zap.Logger, pageID int64) ([]orm.Topologic, error) {
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var topologics []orm.Topologic
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// ctx超时判断
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cancelCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
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defer cancel()
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result := _globalPostgresClient.WithContext(cancelCtx).Clauses(clause.Locking{Strength: "UPDATE"}).Raw(recursiveSQL, pageID).Scan(&topologics)
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if result.Error != nil {
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logger.Error("query circuit diagram topologic info by pageID failed", zap.Int64("pageID", pageID), zap.Error(result.Error))
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return nil, result.Error
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}
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return topologics, nil
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}
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// InitCircuitDiagramTopologic return circuit diagram topologic info from postgres
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func InitCircuitDiagramTopologic(pageID int64, topologicNodes []orm.Topologic) error {
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var rootVertex uuid.UUID
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for _, node := range topologicNodes {
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if node.UUIDFrom.IsNil() {
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rootVertex = node.UUIDTo
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break
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}
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}
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topologicSet := diagram.NewGraph(rootVertex)
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for _, node := range topologicNodes {
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if node.UUIDFrom.IsNil() {
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continue
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}
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topologicSet.AddEdge(node.UUIDFrom, node.UUIDTo)
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}
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diagram.DiagramsOverview.Store(pageID, topologicSet)
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return nil
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}
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// QueryTopologicFromDB return the result of query topologic info from postgresDB
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func QueryTopologicFromDB(ctx context.Context, logger *zap.Logger, gridID, zoneID, stationID int64) error {
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allPages, err := QueryAllPages(ctx, logger, gridID, zoneID, stationID)
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if err != nil {
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logger.Error("query all pages info failed", zap.Int64("gridID", gridID), zap.Int64("zoneID", zoneID), zap.Int64("stationID", stationID), zap.Error(err))
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return err
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}
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for _, page := range allPages {
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topologicInfos, err := QueryTopologicByPageID(ctx, logger, page.ID)
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if err != nil {
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logger.Error("query topologic info by pageID failed", zap.Int64("pageID", page.ID), zap.Error(err))
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return err
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}
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err = InitCircuitDiagramTopologic(page.ID, topologicInfos)
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if err != nil {
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logger.Error("init topologic failed", zap.Error(err))
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return err
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}
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}
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return nil
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}
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