Mercurial > gemma
view pkg/imports/ufa.go @ 5520:05db984d3db1
Improve performance of bottleneck area calculation
Avoid buffer calculations by replacing them with simple distance comparisons
and calculate the boundary of the result geometry only once per iteration.
In some edge cases with very large numbers of iterations, this reduced
the runtime of a bottleneck import by a factor of more than twenty.
author | Tom Gottfried <tom@intevation.de> |
---|---|
date | Thu, 21 Oct 2021 19:50:39 +0200 |
parents | 56c589f7435d |
children | 2dd155cc95ec |
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// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package imports import ( "context" "database/sql" "errors" "os" "path/filepath" "gemma.intevation.de/gemma/pkg/soap" "gemma.intevation.de/gemma/pkg/soap/ifaf" ) // UploadedFairwayAvailability is Job to extract // fairway availability data from an XML file and stores // it into the database. type UploadedFairwayAvailability struct { Dir string } // UFAJobKind is the unique name of this import job type. const UFAJobKind JobKind = "ufa" type ufaJobCreator struct{} func init() { RegisterJobCreator(UFAJobKind, ufaJobCreator{}) } func (ufaJobCreator) Description() string { return "uploaded fairway availability" } func (ufaJobCreator) Create() Job { return new(UploadedFairwayAvailability) } func (ufaJobCreator) Depends() [2][]string { // Same as faJobCreator return faJobCreator{}.Depends() } func (ufaJobCreator) AutoAccept() bool { return true } // StageDone is a NOP for fairway availability imports. func (ufaJobCreator) StageDone(context.Context, *sql.Tx, int64, Feedback) error { return nil } // CleanUp removes the temporary files from the filesystem. func (ufa *UploadedFairwayAvailability) CleanUp() error { return os.RemoveAll(ufa.Dir) } // Do executes the actual uploaded fairway availability import. func (ufa *UploadedFairwayAvailability) Do( ctx context.Context, importID int64, conn *sql.Conn, feedback Feedback, ) (interface{}, error) { fetch := func( ctx context.Context, tx *sql.Tx, bns bottlenecks, ) ([]*ifaf.FairwayAvailability, error) { var response ifaf.Get_bottleneck_faResponse if err := soap.ValidateFile( filepath.Join(ufa.Dir, "data.xml"), "IFAF.xsd", &response, ); err != nil { return nil, err } result := response.Get_bottleneck_faResult if result == nil { return nil, errors.New("no bottlenecks found") } return result.FairwayAvailability, nil } return storeFairwayAvailability(ctx, conn, feedback, fetch) }