Mercurial > gemma
view pkg/imports/erdms.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> |
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date | Thu, 21 Oct 2021 19:50:39 +0200 |
parents | 5f47eeea988d |
children | e1936db6db8e |
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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, 2019 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> // * Tom Gottfried <tom.gottfried@intevation.de> package imports import ( "context" "database/sql" "fmt" "strings" "gemma.intevation.de/gemma/pkg/log" "gemma.intevation.de/gemma/pkg/soap" "gemma.intevation.de/gemma/pkg/soap/erdms" ) const ( selectUserCountriesSQL = ` SELECT DISTINCT country FROM users.list_users WHERE country <> '--' ` ) func userCountries(ctx context.Context, conn *sql.Conn) ([]string, error) { rows, err := conn.QueryContext(ctx, selectUserCountriesSQL) if err != nil { return nil, err } defer rows.Close() var countries []string for rows.Next() { var country string if err = rows.Scan(&country); err != nil { return nil, err } countries = append(countries, country) } if err := rows.Err(); err != nil { return nil, err } return countries, nil } func getRisData( ctx context.Context, conn *sql.Conn, feedback Feedback, username string, password string, URL string, insecure bool, funcode string, ) ([]*erdms.GetRisDataXMLResponse, []string, error) { countries, err := userCountries(ctx, conn) if err != nil { return nil, nil, err } var auth *soap.BasicAuth if username != "" { auth = &soap.BasicAuth{ Login: username, Password: password, } } client := erdms.NewRefService(URL, insecure, auth) var responseData []*erdms.GetRisDataXMLResponse for _, country := range countries { feedback.Info("Request RIS index for country %s", country) request := &erdms.GetRisDataXML{ GetRisDataXMLType: &erdms.GetRisDataXMLType{ Subcode: erdms.NoNS{Text: country + "%"}, Funcode: erdms.NoNS{Text: funcode}, }, } const maxTries = 3 tries := 0 again: data, err := client.GetRisDataXML(request) if err != nil { if t, ok := err.(interface{ Timeout() bool }); ok && t.Timeout() && tries < maxTries { log.Warnln("warn: ERDMS SOAP request timed out. Trying again.") tries++ goto again } return nil, nil, fmt.Errorf( "Error requesting ERDMS service: %v", err) } responseData = append(responseData, data) } feedback.Info("Import data for countries: %s.", strings.Join(countries, ", ")) return responseData, countries, nil }