Mercurial > gemma
view pkg/geoserver/reconf.go @ 4723:baabc2b2f094
Avoid creating user profiles without matching role
The INSTEAD OF triggers on users.list_users did that already, but
profile data coming e.g. via restoring a dump had been added also
if there was no matching database role in the cluster.
This also unifies the errors occuring on creation of users with existing
role names that differed between roles with and without profile before.
Note this is no referential integrity. A dropped role still leaves an
orphaned profile behind.
author | Tom Gottfried <tom@intevation.de> |
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date | Thu, 17 Oct 2019 18:56:59 +0200 |
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 }) }