Mercurial > gemma
view pkg/geoserver/reconf.go @ 5122:0b6b62d247e8 queued-stage-done
Prioritize review jobs on selection
This reverts rev. 37784b70eea3 and instead moves review jobs forward
in the queue when fetching the next job to be run. Also optimized
index setup for filtering by state but not enqueued.
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 26 Mar 2020 14:41:23 +0100 |
parents | 2de644208706 |
children | 5f47eeea988d |
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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 geoserver import ( "container/list" "log" "net" "net/url" "sync" "time" "gemma.intevation.de/gemma/pkg/models" ) var ( confQueue = list.New() confQueueCond = sync.NewCond(new(sync.Mutex)) ) func init() { go asyncConfigure() } func asyncConfigure() { for { var fn func() error confQueueCond.L.Lock() for confQueue.Len() == 0 { confQueueCond.Wait() } fn = confQueue.Remove(confQueue.Front()).(func() error) confQueueCond.L.Unlock() if err := reconfigure(fn); err != nil { log.Printf("warn: configure GeoServer failed: %v\n", err) } } } func reconfigure(fn func() error) error { log.Println("info: configure GeoServer...") const ( maxTries = 10 sleep = time.Second * 5 ) var err error for try := 1; try <= maxTries; try++ { if err = fn(); err == nil { break } if try < maxTries { if uerr, ok := err.(*url.Error); ok { if oerr, ok := uerr.Err.(*net.OpError); ok && oerr.Op == "dial" { log.Printf("warn: failed attempt %d of %d to configure GeoServer. "+ "Will try again in %s...\n", try, maxTries, sleep) time.Sleep(sleep) continue } } } break } return err } // Reconfigure adds a function to a queue of functions to update // the GeoServer async. The functions are run again a number // of times if network errors apppear indicating that the // GeoServer is down. func Reconfigure(fn func() error) { confQueueCond.L.Lock() defer confQueueCond.L.Unlock() confQueue.PushBack(fn) confQueueCond.Signal() } // ReconfigureStyle returns a function to update a style // in the GeoServer to be in sync with the database. func ReconfigureStyle(name string) { Reconfigure(func() error { var stls styles if err := stls.load(); err != nil { return err } entries := models.InternalServices.Filter( models.IntAnd( models.IntWMS, models.IntWithStyle, models.IntByName(name))) for i := range entries { entry := &entries[i] create := !stls.hasStyle(entry.Name) if err := updateStyle(entry, create); err != nil { return err } } return nil }) }