Mercurial > gemma
view pkg/geoserver/reconf.go @ 5085:fe63733750d7 time-sliding
client: correct refresh layers request time
* make a variable "refreshLayersTime" to track the time used in the refreshLayers request,
to avoid using old value as long as "currentVisibleTime" gets its value after the refreshLayers request is ended,
which was leading to show time in toolbar does not actually match the
time in the layers reload request.
author | Fadi Abbud <fadi.abbud@intevation.de> |
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date | Thu, 19 Mar 2020 17:43:23 +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 }) }