Mercurial > gemma
view pkg/imports/statsupdate.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 | 8e30b926b94d |
children | ade07a3f2cfd |
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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) 2021 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" "fmt" "time" "gemma.intevation.de/gemma/pkg/auth" "gemma.intevation.de/gemma/pkg/common" "gemma.intevation.de/gemma/pkg/models" ) type StatsUpdate struct { models.QueueConfigurationType Name string `json:"name"` } const StatsUpdateJobKind JobKind = "statsupdate" type statsUpdateJobCreator struct{} func init() { RegisterJobCreator(StatsUpdateJobKind, statsUpdateJobCreator{}) } func (statsUpdateJobCreator) Description() string { return "statsupdate" } func (statsUpdateJobCreator) AutoAccept() bool { return true } func (statsUpdateJobCreator) Create() Job { return new(StatsUpdate) } func (statsUpdateJobCreator) Depends() [2][]string { return [2][]string{{}, {}} } func (statsUpdateJobCreator) StageDone(context.Context, *sql.Tx, int64, Feedback) error { return nil } // RequiresRoles enforces to be a sys_admin to run this . func (*StatsUpdate) RequiresRoles() auth.Roles { return auth.Roles{"sys_admin"} } func (su *StatsUpdate) Description() (string, error) { return su.Name, nil } func (*StatsUpdate) CleanUp() error { return nil } func (su *StatsUpdate) MarshalAttributes(attrs common.Attributes) error { if err := su.QueueConfigurationType.MarshalAttributes(attrs); err != nil { return err } attrs.Set("name", su.Name) return nil } func (su *StatsUpdate) UnmarshalAttributes(attrs common.Attributes) error { if err := su.QueueConfigurationType.UnmarshalAttributes(attrs); err != nil { return err } name, found := attrs.Get("name") if !found { return errors.New("missing 'name' attribute") } su.Name = name return nil } const loadUpdateStatsScriptSQL = `SELECT script FROM sys_admin.stats_updates WHERE name = $1` func (su *StatsUpdate) Do( ctx context.Context, importID int64, conn *sql.Conn, feedback Feedback, ) (interface{}, error) { start := time.Now() feedback.Info("Running stats update %s.", su.Name) tx, err := conn.BeginTx(ctx, nil) if err != nil { return nil, err } defer tx.Rollback() var script string switch err := tx.QueryRowContext(ctx, loadUpdateStatsScriptSQL, su.Name).Scan(&script); { case err == sql.ErrNoRows: return nil, fmt.Errorf("no update script found for '%s'", su.Name) case err != nil: return nil, err } if _, err := tx.ExecContext(ctx, script); err != nil { return nil, err } if err := tx.Commit(); err != nil { return nil, err } feedback.Info("Running stats update took %v.", time.Since(start)) return nil, nil }