changeset 5710:37c8feeecb4d

Merged branch sr-v2 into default.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Tue, 20 Feb 2024 21:28:56 +0100
parents b1a10654bf0f (current diff) a23fabfd54bb (diff)
children 2dd155cc95ec 98300739f761
files
diffstat 27 files changed, 1455 insertions(+), 849 deletions(-) [+]
line wrap: on
line diff
--- a/Makefile	Wed Feb 14 16:56:28 2024 +0100
+++ b/Makefile	Tue Feb 20 21:28:56 2024 +0100
@@ -12,9 +12,9 @@
 
 export BUILDBASE
 
-.PHONY: all gemma gmaggregate client clean
+.PHONY: all gemma gmaggregate meshmigrate client clean
 
-all: gemma gmaggregate client
+all: gemma gmaggregate meshmigrate client
 
 $(ENVWARPPER):
 	@echo "Preparing go build environment:"
@@ -34,11 +34,15 @@
 gmaggregate: $(ENVWARPPER)
 	cd ./contrib/gmaggregate; "$(ENVWARPPER)" go build
 
+meshmigrate: $(ENVWARPPER)
+	cd ./cmd/meshmigrate; "$(ENVWARPPER)" go build
+
 client:
 	$(MAKE) -f Makefile.build -C client
 
 install: gemma
 	cp cmd/gemma/gemma $(BINDIR)
+	cp cmd/meshmigrate/meshmigrate $(BINDIR)
 	cp contrib/gmaggregate/gmaggregate $(BINDIR)
 
 tar: all
@@ -46,6 +50,7 @@
         tar --transform "s@^@$${v}/@" \
 	    -cJf "../$${v}.tar.xz" \
 	    cmd/gemma/gemma \
+	    cmd/meshmigrate/meshmigrate \
 	    contrib/gmaggregate/gmaggregate \
 	    schema style-templates report-templates \
 	    web misc example_conf.toml
@@ -53,6 +58,7 @@
 clean:
 	$(MAKE) -f Makefile.build -C client $@
 	rm -f contrib/gmaggregate/gmaggregate
+	rm -f cmd/meshmigrate/meshmigrate
 	rm -f cmd/gemma/gemma
 	chmod -R u+w "$(BUILDBASE)" # This is neccessary for deletion to work...
 	rm -rf "$(BUILDBASE)"
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmd/meshmigrate/main.go	Tue Feb 20 21:28:56 2024 +0100
@@ -0,0 +1,286 @@
+// 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>
+
+// meshmigrate can be used to migrate mesh indices from one version to another.
+package main
+
+import (
+	"crypto/sha1"
+	"database/sql"
+	"encoding/hex"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"gemma.intevation.de/gemma/pkg/mesh"
+	"github.com/jackc/pgx"
+	"github.com/jackc/pgx/stdlib"
+)
+
+type credentials struct {
+	host     string
+	port     uint
+	database string
+	user     string
+	password string
+}
+
+func (c *credentials) openDB() (*sql.DB, error) {
+	cc, err := pgx.ParseConnectionString("sslmode=prefer")
+	if err != nil {
+		return nil, err
+	}
+	cc.Host = c.host
+	cc.Port = uint16(c.port)
+	cc.User = c.user
+	cc.Password = c.password
+	cc.Database = c.database
+	return stdlib.OpenDB(cc), nil
+}
+
+const (
+	fetchSQL = `
+SELECT
+	id,
+	coalesce(mesh_index_version, 1) AS mesh_index_version,
+	mesh_index
+FROM waterway.sounding_results
+WHERE mesh_index IS NOT NULL AND `
+
+	updateSQL = `
+UPDATE waterway.sounding_results SET
+	mesh_index_version = $1,
+	mesh_index = $2,
+	mesh_checksum = $3
+WHERE id = $4`
+)
+
+func restore(creds *credentials, dry bool) error {
+	db, err := creds.openDB()
+	if err != nil {
+		return err
+	}
+	defer db.Close()
+
+	dir, err := os.Getwd()
+	if err != nil {
+		return err
+	}
+	log.Println(dir)
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return err
+	}
+	log.Println(len(entries))
+	pattern := regexp.MustCompile(`^mesh-(\d+)-v(\d+)\.idx\.gz$`)
+	for _, entry := range entries {
+		name := entry.Name()
+		m := pattern.FindStringSubmatch(name)
+		if m == nil {
+			continue
+		}
+		id, err := strconv.ParseInt(m[1], 10, 64)
+		if err != nil {
+			return err
+		}
+		version, err := strconv.ParseInt(m[2], 10, 64)
+		if err != nil {
+			return err
+		}
+		data, err := os.ReadFile(name)
+		if err != nil {
+			return err
+		}
+		h := sha1.New()
+		h.Write(data)
+		checksum := hex.EncodeToString(h.Sum(nil))
+		log.Printf("restore mesh %d version %d\n", id, version)
+		if dry {
+			continue
+		}
+		if _, err := db.Exec(updateSQL, version, data, checksum, id); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func process(
+	creds *credentials,
+	to int,
+	ids []int64,
+	limit int,
+	dry, backup bool,
+) error {
+	db, err := creds.openDB()
+	if err != nil {
+		return err
+	}
+	defer db.Close()
+
+	sql := fetchSQL + fmt.Sprintf("coalesce(mesh_index_version, 1) < %d", to)
+
+	if len(ids) > 0 {
+		sql += " AND " + idsFilter(ids)
+	}
+
+	if limit > -1 {
+		sql += fmt.Sprintf(" LIMIT %d", limit)
+	}
+
+	rows, err := db.Query(sql)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	var totalIn, totalOut int64
+	migrated := 0
+
+	for rows.Next() {
+		var id int64
+		var version int
+		var data []byte
+		if err := rows.Scan(&id, &version, &data); err != nil {
+			return err
+		}
+		if len(data) == 0 {
+			log.Printf("mesh %d is empty\n", id)
+			continue
+		}
+		log.Printf("processing mesh %d\n", id)
+		totalIn += int64(len(data))
+		migrated++
+		if backup {
+			fname := fmt.Sprintf("mesh-%d-v%d.idx.gz", id, version)
+			if err := os.WriteFile(fname, data, 0666); err != nil {
+				return err
+			}
+		}
+		src := new(mesh.STRTree)
+		if err := src.FromBytes(data, version); err != nil {
+			return err
+		}
+		src.OptimizeForSerialization(to)
+		out, newVersion, err := src.Bytes(to)
+		if err != nil {
+			return err
+		}
+		totalOut += int64(len(out))
+		if backup {
+			fname := fmt.Sprintf("migrated-mesh-%d-v%d.idx.gz", id, newVersion)
+			if err := os.WriteFile(fname, out, 0666); err != nil {
+				return err
+			}
+		}
+		if dry {
+			continue
+		}
+		h := sha1.New()
+		h.Write(out)
+		checksum := hex.EncodeToString(h.Sum(nil))
+		if _, err := db.Exec(updateSQL, newVersion, out, checksum, id); err != nil {
+			return err
+		}
+	}
+	if rows.Err(); err != nil {
+		return err
+	}
+	log.Printf("migrated meshes: %d\n", migrated)
+	log.Printf("in: %d (%.2f MB)\n", totalIn, float64(totalIn)/(1024*1024))
+	log.Printf("out: %d (%.2f MB)\n", totalOut, float64(totalOut)/(1024*1024))
+	log.Printf("ratio: %.2f%%\n", float64(totalOut)/float64(totalIn)*100)
+
+	return nil
+}
+
+func idsFilter(ids []int64) string {
+	if len(ids) == 0 {
+		return ""
+	}
+	var b strings.Builder
+	for i, id := range ids {
+		if i > 0 {
+			b.WriteByte(',')
+		}
+		b.WriteString(strconv.FormatInt(id, 10))
+	}
+	return "id IN (" + b.String() + ")"
+}
+
+func check(err error) {
+	if err != nil {
+		log.Fatalf("error: %v\n", err)
+	}
+}
+
+func toIDs(s string) ([]int64, error) {
+	if s == "" {
+		return nil, nil
+	}
+	var ids []int64
+	for _, f := range strings.Split(s, ",") {
+		f = strings.TrimSpace(f)
+		id, err := strconv.ParseInt(f, 10, 64)
+		if err != nil {
+			return nil, err
+		}
+		ids = append(ids, id)
+	}
+	return ids, nil
+}
+
+func checkMode(mode string) error {
+	switch mode {
+	case "migrate", "restore":
+		return nil
+	default:
+		return fmt.Errorf("unknown mode %q", mode)
+	}
+}
+
+func main() {
+	var (
+		creds  credentials
+		idsS   string
+		limit  int
+		dry    bool
+		backup bool
+		to     int
+		mode   string
+	)
+	flag.StringVar(&creds.host, "host", "localhost", "host of the database server")
+	flag.UintVar(&creds.port, "port", 5432, "port of the database server")
+	flag.StringVar(&creds.database, "database", "gemma", "database name")
+	flag.StringVar(&creds.user, "user", "gemma", "database user")
+	flag.StringVar(&creds.password, "password", "gemma", "database user password")
+	flag.IntVar(&limit, "limit", -1, "limiting number of mesh to migrate (-1: no limit)")
+	flag.StringVar(&idsS, "ids", "", "filter ids (empty: no ids)")
+	flag.BoolVar(&dry, "dry", false, "to a dry run")
+	flag.BoolVar(&backup, "backup", true, "store backup in file system")
+	flag.IntVar(&to, "to", 2, "version to store")
+	flag.StringVar(&mode, "mode", "migrate", "operation mode: migrate, restore")
+	flag.Parse()
+	ids, err := toIDs(idsS)
+	check(err)
+	check(checkMode(mode))
+	if mode == "migrate" {
+		check(process(&creds, to, ids, limit, dry, backup))
+	} else {
+		check(restore(&creds, dry))
+	}
+}
--- a/go.mod	Wed Feb 14 16:56:28 2024 +0100
+++ b/go.mod	Tue Feb 20 21:28:56 2024 +0100
@@ -1,39 +1,57 @@
 module gemma.intevation.de/gemma
 
-go 1.13
+go 1.21
 
 require (
 	github.com/PaesslerAG/gval v1.1.1
-	github.com/cockroachdb/apd v1.1.0 // indirect
 	github.com/fatih/structs v1.1.0
 	github.com/fogleman/contourmap v0.0.0-20190814184649-9f61d36c4199
-	github.com/gofrs/uuid v3.2.0+incompatible // indirect
 	github.com/gorilla/mux v1.8.0
-	github.com/jackc/fake v0.0.0-20150926172116-812a484cc733 // indirect
 	github.com/jackc/pgx v3.6.2+incompatible
 	github.com/jonas-p/go-shp v0.1.2-0.20190401125246-9fd306ae10a6
-	github.com/lib/pq v1.2.0 // indirect
 	github.com/mitchellh/go-homedir v1.1.0
-	github.com/pelletier/go-toml/v2 v2.0.2 // indirect
-	github.com/richardlehane/msoleps v1.0.3 // indirect
 	github.com/rs/cors v1.8.2
 	github.com/sergi/go-diff v1.0.0
-	github.com/shopspring/decimal v1.3.1 // indirect
-	github.com/spf13/afero v1.9.2 // indirect
 	github.com/spf13/cobra v1.5.0
 	github.com/spf13/viper v1.12.0
-	github.com/subosito/gotenv v1.4.0 // indirect
 	github.com/tidwall/rtree v1.6.0
-	github.com/xuri/efp v0.0.0-20220603152613-6918739fd470 // indirect
 	github.com/xuri/excelize/v2 v2.4.1
 	go.etcd.io/bbolt v1.3.6
-	golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa // indirect
 	golang.org/x/net v0.0.0-20220805013720-a33c5aa5df48
-	golang.org/x/sys v0.0.0-20220804214406-8e32c043e418 // indirect
 	gonum.org/v1/gonum v0.11.0
-	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
 	gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
-	gopkg.in/ini.v1 v1.66.6 // indirect
 	gopkg.in/robfig/cron.v1 v1.2.0
 	gopkg.in/yaml.v2 v2.4.0
 )
+
+require (
+	github.com/cockroachdb/apd v1.1.0 // indirect
+	github.com/fsnotify/fsnotify v1.5.4 // indirect
+	github.com/gofrs/uuid v3.2.0+incompatible // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/jackc/fake v0.0.0-20150926172116-812a484cc733 // indirect
+	github.com/lib/pq v1.2.0 // indirect
+	github.com/magiconair/properties v1.8.6 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/mohae/deepcopy v0.0.0-20170929034955-c48cc78d4826 // indirect
+	github.com/pelletier/go-toml v1.9.5 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.2 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/richardlehane/mscfb v1.0.3 // indirect
+	github.com/richardlehane/msoleps v1.0.3 // indirect
+	github.com/shopspring/decimal v1.3.1 // indirect
+	github.com/spf13/afero v1.9.2 // indirect
+	github.com/spf13/cast v1.5.0 // indirect
+	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/subosito/gotenv v1.4.0 // indirect
+	github.com/tidwall/geoindex v1.6.1 // indirect
+	github.com/xuri/efp v0.0.0-20220603152613-6918739fd470 // indirect
+	golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa // indirect
+	golang.org/x/sys v0.0.0-20220804214406-8e32c043e418 // indirect
+	golang.org/x/text v0.3.7 // indirect
+	gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
+	gopkg.in/ini.v1 v1.66.6 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
--- a/go.sum	Wed Feb 14 16:56:28 2024 +0100
+++ b/go.sum	Tue Feb 20 21:28:56 2024 +0100
@@ -17,32 +17,14 @@
 cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI=
 cloud.google.com/go v0.74.0/go.mod h1:VV1xSbzvo+9QJOxLDaJfTjx5e+MePCpCWwvftOeQmWk=
 cloud.google.com/go v0.75.0/go.mod h1:VGuuCn7PG0dwsd5XPVm2Mm3wlh3EL55/79EKB6hlPTY=
-cloud.google.com/go v0.78.0/go.mod h1:QjdrLG0uq+YwhjoVOLsS1t7TW8fs36kLs4XO5R5ECHg=
-cloud.google.com/go v0.79.0/go.mod h1:3bzgcEeQlzbuEAYu4mrWhKqWjmpprinYgKJLgKHnbb8=
-cloud.google.com/go v0.81.0/go.mod h1:mk/AM35KwGk/Nm2YSeZbxXdrNK3KZOYHmLkOqC2V6E0=
-cloud.google.com/go v0.83.0/go.mod h1:Z7MJUsANfY0pYPdw0lbnivPx4/vhy/e2FEkSkF7vAVY=
-cloud.google.com/go v0.84.0/go.mod h1:RazrYuxIK6Kb7YrzzhPoLmCVzl7Sup4NrbKPg8KHSUM=
-cloud.google.com/go v0.87.0/go.mod h1:TpDYlFy7vuLzZMMZ+B6iRiELaY7z/gJPaqbMx6mlWcY=
-cloud.google.com/go v0.90.0/go.mod h1:kRX0mNRHe0e2rC6oNakvwQqzyDmg57xJ+SZU1eT2aDQ=
-cloud.google.com/go v0.93.3/go.mod h1:8utlLll2EF5XMAV15woO4lSbWQlk8rer9aLOfLh7+YI=
-cloud.google.com/go v0.94.1/go.mod h1:qAlAugsXlC+JWO+Bke5vCtc9ONxjQT3drlTTnAplMW4=
-cloud.google.com/go v0.97.0/go.mod h1:GF7l59pYBVlXQIBLx3a761cZ41F9bBH3JUlihCt2Udc=
-cloud.google.com/go v0.99.0/go.mod h1:w0Xx2nLzqWJPuozYQX+hFfCSI8WioryfRDzkoI/Y2ZA=
-cloud.google.com/go v0.100.2/go.mod h1:4Xra9TjzAeYHrl5+oeLlzbM2k3mjVhZh4UqTZ//w99A=
 cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
 cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
 cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
 cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
 cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
 cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
-cloud.google.com/go/compute v0.1.0/go.mod h1:GAesmwr110a34z04OlxYkATPBEfVhkymfTBXtfbBFow=
-cloud.google.com/go/compute v1.3.0/go.mod h1:cCZiE1NHEtai4wiufUhW8I8S1JKkAnhnQJWM7YD99wM=
-cloud.google.com/go/compute v1.5.0/go.mod h1:9SMHyhJlzhlkJqrPAc839t2BZFTSk6Jdj6mkzQJeu0M=
-cloud.google.com/go/compute v1.6.0/go.mod h1:T29tfhtVbq1wvAPo0E3+7vhgmkOYeXjhFvz/FMzPu0s=
-cloud.google.com/go/compute v1.6.1/go.mod h1:g85FgpzFvNULZ+S8AYq87axRKuf2Kh7deLqV/jJ3thU=
 cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
 cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
-cloud.google.com/go/firestore v1.6.1/go.mod h1:asNXNOzBdyVQmEU+ggO8UPodTkEVFW5Qx+rwHnAz+EY=
 cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
 cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
 cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
@@ -54,119 +36,49 @@
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
 cloud.google.com/go/storage v1.14.0/go.mod h1:GrKmX003DSIwi9o29oFT7YDnHYwZoctc3fOKtUw0Xmo=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-gioui.org v0.0.0-20210308172011-57750fc8a0a6/go.mod h1:RSH6KIUZ0p2xy5zHDxgAM4zumjgTw83q2ge/PI+yyw8=
-git.sr.ht/~sbinet/gg v0.3.1/go.mod h1:KGYtlADtqsqANL9ueOFkWymvzUvLMQllU5Ixo+8v3pc=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
-github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
-github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/PaesslerAG/gval v1.1.1 h1:4d7pprU9876+m3rc08X33UjGip8oV1kkm8Gh5GBuTss=
 github.com/PaesslerAG/gval v1.1.1/go.mod h1:Fa8gfkCmUsELXgayr8sfL/sw+VzCVoa03dcOcR/if2w=
 github.com/PaesslerAG/jsonpath v0.1.0 h1:gADYeifvlqK3R3i2cR5B4DGgxLXIPb3TRTH1mGi0jPI=
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@@ -174,8 +86,6 @@
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@@ -190,10 +100,6 @@
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@@ -204,18 +110,12 @@
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@@ -226,54 +126,17 @@
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 github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
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@@ -284,26 +147,11 @@
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@@ -314,101 +162,37 @@
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@@ -422,17 +206,13 @@
 github.com/spf13/viper v1.12.0 h1:CZ7eSOd3kZoaYDLbXnmzgQI5RlciuXBMA+18HwHRfZQ=
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@@ -443,7 +223,6 @@
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@@ -453,46 +232,28 @@
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 go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
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 golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa h1:zuSxTR4o9y82ebqCUJYNGJbGPo6sKVl54f/TVDObg1c=
 golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
-golang.org/x/exp v0.0.0-20180321215751-8460e604b9de/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/exp v0.0.0-20180807140117-3d87b88a115f/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/exp v0.0.0-20190125153040-c74c464bbbf2/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
 golang.org/x/exp v0.0.0-20190829153037-c13cbed26979/go.mod h1:86+5VVa7VpoJ4kLfm080zCjGlMRFzhUhsZKEZO7MGek=
-golang.org/x/exp v0.0.0-20191002040644-a1355ae1e2c3/go.mod h1:NOZ3BPKG0ec/BKJQgnvsSFpcKLM5xXVWnvZS97DWHgE=
 golang.org/x/exp v0.0.0-20191030013958-a1ab85dbe136/go.mod h1:JXzH8nQsPlswgeRAPE3MuO9GYsAcnJvJ4vnMwN/5qkY=
 golang.org/x/exp v0.0.0-20191129062945-2f5052295587/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
 golang.org/x/exp v0.0.0-20191227195350-da58074b4299/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
@@ -500,19 +261,9 @@
 golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EHIKF9dgMWnmCNThgcyBT1FY9mM=
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6 h1:QE6XYQK6naiK1EPAe1g/ILLxN5RBoH5xkJk3CqlMI/Y=
 golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
-golang.org/x/image v0.0.0-20180708004352-c73c2afc3b81/go.mod h1:ux5Hcp/YLpHSI86hEcLt0YII63i6oz57MZXIpbrjZUs=
 golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20190910094157-69e4b8554b2a/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20200119044424-58c23975cae1/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20200430140353-33d19683fad8/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20200618115811-c13761719519/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20201208152932-35266b937fa6/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20210216034530-4410531fe030/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
 golang.org/x/image v0.0.0-20210220032944-ac19c3e999fb/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/image v0.0.0-20210607152325-775e3b0c77b9/go.mod h1:023OzeP/+EPmXeapQh35lcL3II3LrY8Ic+EFFKVhULM=
-golang.org/x/image v0.0.0-20210628002857-a66eb6448b8d/go.mod h1:023OzeP/+EPmXeapQh35lcL3II3LrY8Ic+EFFKVhULM=
-golang.org/x/image v0.0.0-20211028202545-6944b10bf410/go.mod h1:023OzeP/+EPmXeapQh35lcL3II3LrY8Ic+EFFKVhULM=
 golang.org/x/image v0.0.0-20220302094943-723b81ca9867 h1:TcHcE0vrmgzNH1v3ppjcMGbhG5+9fMuvOmUYwNEF4q4=
 golang.org/x/image v0.0.0-20220302094943-723b81ca9867/go.mod h1:023OzeP/+EPmXeapQh35lcL3II3LrY8Ic+EFFKVhULM=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
@@ -526,7 +277,6 @@
 golang.org/x/lint v0.0.0-20200130185559-910be7a94367/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/lint v0.0.0-20201208152925-83fdc39ff7b5/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
-golang.org/x/lint v0.0.0-20210508222113-6edffad5e616/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
@@ -537,11 +287,8 @@
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.5.1/go.mod h1:5OXOZSfqPIIbmVBIIKWRFfZjPR0E5r58TLhUjH0a2Ro=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
@@ -549,11 +296,9 @@
 golang.org/x/net v0.0.0-20190501004415-9ce7a6920f09/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
-golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
@@ -570,24 +315,10 @@
 golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201031054903-ff519b6c9102/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
-golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201209123823-ac852fbbde11/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20210316092652-d523dce5a7f4/go.mod h1:RBQZq4jEuRlivfhVLdyRGr576XBO4/greRjx4P4O3yc=
-golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
-golang.org/x/net v0.0.0-20210410081132-afb366fc7cd1/go.mod h1:9tjilg8BloeKEkVJvy7fQ90B1CfIiPueXVOjqfkSzI8=
-golang.org/x/net v0.0.0-20210503060351-7fd8e65b6420/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
-golang.org/x/net v0.0.0-20220225172249-27dd8689420f/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
-golang.org/x/net v0.0.0-20220325170049-de3da57026de/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
-golang.org/x/net v0.0.0-20220412020605-290c469a71a5/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
-golang.org/x/net v0.0.0-20220425223048-2871e0cb64e4/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
-golang.org/x/net v0.0.0-20220520000938-2e3eb7b945c2/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
 golang.org/x/net v0.0.0-20220805013720-a33c5aa5df48 h1:N9Vc/rorQUDes6B9CNdIxAn5jODGj2wzfrei2x4wNj4=
 golang.org/x/net v0.0.0-20220805013720-a33c5aa5df48/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -599,17 +330,6 @@
 golang.org/x/oauth2 v0.0.0-20201109201403-9fd604954f58/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
 golang.org/x/oauth2 v0.0.0-20210218202405-ba52d332ba99/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20210220000619-9bb904979d93/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20210313182246-cd4f82c27b84/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20210628180205-a41e5a781914/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20210805134026-6f1e6394065a/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20210819190943-2bc19b11175f/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20211005180243-6b3c2da341f1/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20211104180415-d3ed0bb246c8/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
-golang.org/x/oauth2 v0.0.0-20220309155454-6242fa91716a/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
-golang.org/x/oauth2 v0.0.0-20220411215720-9780585627b5/go.mod h1:DAh4E804XQdzx2j+YRIaUnCqCV2RuMz24cGBJ5QYIrc=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -620,34 +340,20 @@
 golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220513210516-0976fa681c29/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190922100055-0a153f010e69/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200124204421-9fbb57f87de9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -658,8 +364,6 @@
 golang.org/x/sys v0.0.0-20200511232937-7e40ca221e25/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200515095857-1151b9dac4a9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200523222454-059865788121/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200803210538-64077c9b5642/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200905004654-be1d3432aa8f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200923182605-d9f96fdee20d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -668,63 +372,28 @@
 golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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-golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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 golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
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-golang.org/x/tools v0.0.0-20190206041539-40960b6deb8e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
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@@ -736,9 +405,7 @@
 golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
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-golang.org/x/tools v0.0.0-20190907020128-2ca718005c18/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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-golang.org/x/tools v0.0.0-20190927191325-030b2cf1153e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191115202509-3a792d9c32b2/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@@ -762,7 +429,6 @@
 golang.org/x/tools v0.0.0-20200512131952-2bc93b1c0c88/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200515010526-7d3b6ebf133d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200618134242-20370b0cb4b2/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
-golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200729194436-6467de6f59a7/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
@@ -771,30 +437,14 @@
 golang.org/x/tools v0.0.0-20201201161351-ac6f37ff4c2a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20201208233053-a543418bbed2/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210105154028-b0ab187a4818/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
-golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210108195828-e2f9c7f1fc8e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
-golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.1.3/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.1.4/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.1.9/go.mod h1:nABZi5QlRsZVlzPpHl034qft6wpY4eDcsTt5AaioBiU=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20220411194840-2f41105eb62f/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
-gonum.org/v1/gonum v0.0.0-20180816165407-929014505bf4/go.mod h1:Y+Yx5eoAFn32cQvJDxZx5Dpnq+c3wtXuadVZAcxbbBo=
-gonum.org/v1/gonum v0.8.2/go.mod h1:oe/vMfY3deqTw+1EZJhuvEW2iwGF1bW9wwu7XCu0+v0=
-gonum.org/v1/gonum v0.9.3/go.mod h1:TZumC3NeyVQskjXqmyWt4S3bINhy7B4eYwW69EbyX+0=
 gonum.org/v1/gonum v0.11.0 h1:f1IJhK4Km5tBJmaiJXtk/PkL4cdVX6J+tGiM187uT5E=
 gonum.org/v1/gonum v0.11.0/go.mod h1:fSG4YDCxxUZQJ7rKsQrj0gMOg00Il0Z96/qMA4bVQhA=
-gonum.org/v1/netlib v0.0.0-20190313105609-8cb42192e0e0/go.mod h1:wa6Ws7BG/ESfp6dHfk7C6KdzKA7wR7u/rKwOGE66zvw=
-gonum.org/v1/plot v0.0.0-20190515093506-e2840ee46a6b/go.mod h1:Wt8AAjI+ypCyYX3nZBvf6cAIx93T+c/OS2HFAYskSZc=
-gonum.org/v1/plot v0.9.0/go.mod h1:3Pcqqmp6RHvJI72kgb8fThyUnav364FOsdDo2aGW5lY=
-gonum.org/v1/plot v0.10.1/go.mod h1:VZW5OlhkL1mysU9vaqNHnsy86inf6Ot+jB3r+BczCEo=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
 google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
@@ -814,26 +464,6 @@
 google.golang.org/api v0.35.0/go.mod h1:/XrVsuzM0rZmrsbjJutiuftIzeuTQcEeaYcSk/mQ1dg=
 google.golang.org/api v0.36.0/go.mod h1:+z5ficQTmoYpPn8LCUNVpK5I7hwkpjbcgqA7I34qYtE=
 google.golang.org/api v0.40.0/go.mod h1:fYKFpnQN0DsDSKRVRcQSDQNtqWPfM9i+zNPxepjRCQ8=
-google.golang.org/api v0.41.0/go.mod h1:RkxM5lITDfTzmyKFPt+wGrCJbVfniCr2ool8kTBzRTU=
-google.golang.org/api v0.43.0/go.mod h1:nQsDGjRXMo4lvh5hP0TKqF244gqhGcr/YSIykhUk/94=
-google.golang.org/api v0.47.0/go.mod h1:Wbvgpq1HddcWVtzsVLyfLp8lDg6AA241LmgIL59tHXo=
-google.golang.org/api v0.48.0/go.mod h1:71Pr1vy+TAZRPkPs/xlCf5SsU8WjuAWv1Pfjbtukyy4=
-google.golang.org/api v0.50.0/go.mod h1:4bNT5pAuq5ji4SRZm+5QIkjny9JAyVD/3gaSihNefaw=
-google.golang.org/api v0.51.0/go.mod h1:t4HdrdoNgyN5cbEfm7Lum0lcLDLiise1F8qDKX00sOU=
-google.golang.org/api v0.54.0/go.mod h1:7C4bFFOvVDGXjfDTAsgGwDgAxRDeQ4X8NvUedIt6z3k=
-google.golang.org/api v0.55.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqivdVE=
-google.golang.org/api v0.56.0/go.mod h1:38yMfeP1kfjsl8isn0tliTjIb1rJXcQi4UXlbqivdVE=
-google.golang.org/api v0.57.0/go.mod h1:dVPlbZyBo2/OjBpmvNdpn2GRm6rPy75jyU7bmhdrMgI=
-google.golang.org/api v0.59.0/go.mod h1:sT2boj7M9YJxZzgeZqXogmhfmRWDtPzT31xkieUbuZU=
-google.golang.org/api v0.61.0/go.mod h1:xQRti5UdCmoCEqFxcz93fTl338AVqDgyaDRuOZ3hg9I=
-google.golang.org/api v0.63.0/go.mod h1:gs4ij2ffTRXwuzzgJl/56BdwJaA194ijkfn++9tDuPo=
-google.golang.org/api v0.67.0/go.mod h1:ShHKP8E60yPsKNw/w8w+VYaj9H6buA5UqDp8dhbQZ6g=
-google.golang.org/api v0.70.0/go.mod h1:Bs4ZM2HGifEvXwd50TtW70ovgJffJYw2oRCOFU/SkfA=
-google.golang.org/api v0.71.0/go.mod h1:4PyU6e6JogV1f9eA4voyrTY2batOLdgZ5qZ5HOCc4j8=
-google.golang.org/api v0.74.0/go.mod h1:ZpfMZOVRMywNyvJFeqL9HRWBgAuRfSjJFpe9QtRRyDs=
-google.golang.org/api v0.75.0/go.mod h1:pU9QmyHLnzlpar1Mjt4IbapUCy8J+6HD6GeELN69ljA=
-google.golang.org/api v0.78.0/go.mod h1:1Sg78yoMLOhlQTeF+ARBoytAcH1NNyyl390YMy6rKmw=
-google.golang.org/api v0.81.0/go.mod h1:FA6Mb/bZxj706H2j+j2d6mHEEaHBmbbWnkfvmorOCko=
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
@@ -864,7 +494,6 @@
 google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200513103714-09dca8ec2884/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
 google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
@@ -877,48 +506,7 @@
 google.golang.org/genproto v0.0.0-20201210142538-e3217bee35cc/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20201214200347-8c77b98c765d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210108203827-ffc7fda8c3d7/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210222152913-aa3ee6e6a81c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/genproto v0.0.0-20210226172003-ab064af71705/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210310155132-4ce2db91004e/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210319143718-93e7006c17a6/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20210402141018-6c239bbf2bb1/go.mod h1:9lPAdzaEmUacj36I+k7YKbEc5CXzPIeORRgDAUOu28A=
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-google.golang.org/genproto v0.0.0-20220222213610-43724f9ea8cf/go.mod h1:kGP+zUP2Ddo0ayMi4YuN7C3WZyJvGLZRh8Z5wnAqvEI=
-google.golang.org/genproto v0.0.0-20220304144024-325a89244dc8/go.mod h1:kGP+zUP2Ddo0ayMi4YuN7C3WZyJvGLZRh8Z5wnAqvEI=
-google.golang.org/genproto v0.0.0-20220310185008-1973136f34c6/go.mod h1:kGP+zUP2Ddo0ayMi4YuN7C3WZyJvGLZRh8Z5wnAqvEI=
-google.golang.org/genproto v0.0.0-20220324131243-acbaeb5b85eb/go.mod h1:hAL49I2IFola2sVEjAn7MEwsja0xp51I0tlGAf9hz4E=
-google.golang.org/genproto v0.0.0-20220407144326-9054f6ed7bac/go.mod h1:8w6bsBMX6yCPbAVTeqQHvzxW0EIFigd5lZyahWgyfDo=
-google.golang.org/genproto v0.0.0-20220413183235-5e96e2839df9/go.mod h1:8w6bsBMX6yCPbAVTeqQHvzxW0EIFigd5lZyahWgyfDo=
-google.golang.org/genproto v0.0.0-20220414192740-2d67ff6cf2b4/go.mod h1:8w6bsBMX6yCPbAVTeqQHvzxW0EIFigd5lZyahWgyfDo=
-google.golang.org/genproto v0.0.0-20220421151946-72621c1f0bd3/go.mod h1:8w6bsBMX6yCPbAVTeqQHvzxW0EIFigd5lZyahWgyfDo=
-google.golang.org/genproto v0.0.0-20220429170224-98d788798c3e/go.mod h1:8w6bsBMX6yCPbAVTeqQHvzxW0EIFigd5lZyahWgyfDo=
-google.golang.org/genproto v0.0.0-20220505152158-f39f71e6c8f3/go.mod h1:RAyBrSAP7Fh3Nc84ghnVLDPuV51xc9agzmm4Ph6i0Q4=
-google.golang.org/genproto v0.0.0-20220519153652-3a47de7e79bd/go.mod h1:RAyBrSAP7Fh3Nc84ghnVLDPuV51xc9agzmm4Ph6i0Q4=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
 google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
@@ -932,24 +520,9 @@
 google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/grpc v1.31.1/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
 google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv2fbc=
 google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8=
 google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
-google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
-google.golang.org/grpc v1.36.1/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
-google.golang.org/grpc v1.37.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
-google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
-google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
-google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
-google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
-google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
-google.golang.org/grpc v1.40.1/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
-google.golang.org/grpc v1.44.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
-google.golang.org/grpc v1.45.0/go.mod h1:lN7owxKUQEqMfSyQikvvk5tf/6zMPsrK+ONuO11+0rQ=
-google.golang.org/grpc v1.46.0/go.mod h1:vN9eftEi1UMyUsIF80+uQXhHjbXYbm0uXoFCACuMGWk=
-google.golang.org/grpc v1.46.2/go.mod h1:vN9eftEi1UMyUsIF80+uQXhHjbXYbm0uXoFCACuMGWk=
-google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -960,37 +533,22 @@
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
-google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc h1:2gGKlE2+asNV9m7xrywl36YYNnBG5ZQ0r/BOOxqPpmk=
 gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc/go.mod h1:m7x9LTH6d71AHyAX77c9yqWCCa3UKHcVEj9y7hAtKDk=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df h1:n7WqCuqOuCbNr617RXOY0AWRXxgwEyPp2z+p0+hgMuE=
 gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df/go.mod h1:LRQQ+SO6ZHR7tOkpBDuZnXENFzX8qRjMDMyPD6BRkCw=
-gopkg.in/ini.v1 v1.66.4/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/ini.v1 v1.66.6 h1:LATuAqN/shcYAOkv3wl2L4rkaKqkcgTBQjOyYDvcPKI=
 gopkg.in/ini.v1 v1.66.6/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/robfig/cron.v1 v1.2.0 h1:PSJsm0uPEND0Rumxxbo7qNb7bxQUTIWDIdpPS59/tcw=
 gopkg.in/robfig/cron.v1 v1.2.0/go.mod h1:3I22DCB+7VAStCIqyArwi2xY9a7IioCiNjrsnCqs+HE=
-gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
@@ -1000,9 +558,6 @@
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-honnef.co/go/tools v0.1.3/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
-rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
-sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pkg/common/delta.go	Tue Feb 20 21:28:56 2024 +0100
@@ -0,0 +1,37 @@
+// 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) 2024 by via donau
+//   – Österreichische Wasserstraßen-Gesellschaft mbH
+// Software engineering by Intevation GmbH
+//
+// Author(s):
+//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>
+
+package common
+
+// Delta returns a function which returns its argument when called
+// the first time and the delta to the last call afterwards.
+func Delta() func(int64) int64 {
+	var last int64
+	return func(x int64) (y int64) {
+		y = x - last
+		last = x
+		return
+	}
+}
+
+// InvDelta is the inverse function to Delta. A sequence of numbers
+// fed into the function generated by InvDelta restores
+// the values fed into the function generated by Delta.
+func InvDelta() func(int64) int64 {
+	var last int64
+	return func(x int64) (y int64) {
+		y = x + last
+		last = y
+		return
+	}
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pkg/common/delta_test.go	Tue Feb 20 21:28:56 2024 +0100
@@ -0,0 +1,40 @@
+// 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) 2024 by via donau
+//   – Österreichische Wasserstraßen-Gesellschaft mbH
+// Software engineering by Intevation GmbH
+//
+// Author(s):
+//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>
+
+package common
+
+import "testing"
+
+func TestDelta(t *testing.T) {
+	var (
+		input = []int64{1, 2, 3, 2, 1}
+		want  = []int64{1, 1, 1, -1, -1}
+	)
+	delta := Delta()
+	for i, in := range input {
+		if got := delta(in); got != want[i] {
+			t.Errorf("input %d: got %d expected %d", in, got, want[i])
+		}
+	}
+}
+
+func TestInvDelta(t *testing.T) {
+	input := []int64{1, 2, 3, 2, 1, -10, 100}
+	delta := Delta()
+	invDelta := InvDelta()
+	for _, in := range input {
+		if got := invDelta(delta(in)); got != in {
+			t.Errorf("input %d: got %d expected %d", in, got, in)
+		}
+	}
+}
--- a/pkg/controllers/proxy.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/controllers/proxy.go	Tue Feb 20 21:28:56 2024 +0100
@@ -21,7 +21,6 @@
 	"encoding/base64"
 	"encoding/xml"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
 	"regexp"
@@ -138,7 +137,7 @@
 				if r2, ok := r.(io.ReadCloser); ok {
 					return r2, nil
 				}
-				return ioutil.NopCloser(r), nil
+				return io.NopCloser(r), nil
 			},
 			func(w io.Writer) (io.WriteCloser, error) {
 				if w2, ok := w.(io.WriteCloser); ok {
--- a/pkg/controllers/shapestretches.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/controllers/shapestretches.go	Tue Feb 20 21:28:56 2024 +0100
@@ -18,7 +18,6 @@
 	"database/sql"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -188,7 +187,7 @@
 
 	tmp := config.TmpDir()
 
-	dir, err := ioutil.TempDir(tmp, "stretch-download")
+	dir, err := os.MkdirTemp(tmp, "stretch-download")
 	if err != nil {
 		http.Error(
 			rw, fmt.Sprintf("Cannot create temp dir: %v.", err),
--- a/pkg/controllers/system.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/controllers/system.go	Tue Feb 20 21:28:56 2024 +0100
@@ -18,8 +18,8 @@
 	"context"
 	"database/sql"
 	"fmt"
-	"io/ioutil"
 	"net/http"
+	"os"
 	"regexp"
 	"strings"
 	"sync"
@@ -90,7 +90,7 @@
 
 	var txt []byte
 
-	if txt, err = ioutil.ReadFile(path); err != nil {
+	if txt, err = os.ReadFile(path); err != nil {
 		return
 	}
 
@@ -112,7 +112,7 @@
 	}
 
 	var data []byte
-	if data, err = ioutil.ReadFile(cfg); err != nil {
+	if data, err = os.ReadFile(cfg); err != nil {
 		return
 	}
 
--- a/pkg/imports/sr.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/imports/sr.go	Tue Feb 20 21:28:56 2024 +0100
@@ -174,7 +174,7 @@
 
 	insertMeshSQL = `
 UPDATE waterway.sounding_results SET
-  mesh_checksum = $2, mesh_index = $3
+  mesh_checksum = $2, mesh_index = $3, mesh_index_version = $4
 WHERE id = $1`
 
 	repairBoundarySQL = `
@@ -512,9 +512,14 @@
 	if err := xyz.FromWKB(reproj); err != nil {
 		return nil, err
 	}
-
 	feedback.Info("Reprojecting points to EPSG %d took %v.",
 		epsg, time.Since(start))
+
+	start = time.Now()
+	xyz = xyz.QuantizeXY(mesh.QuantScale)
+	feedback.Info("Quantizing points in X/Y to 1/%d took %v.",
+		mesh.QuantScale, time.Since(start))
+
 	feedback.Info("Number of reprojected points: %d", len(xyz))
 	feedback.Info("Triangulate XYZ data.")
 
@@ -741,9 +746,11 @@
 	}
 
 	if m.SurveyType != models.SurveyTypeMarking {
-		var index []byte
+		final.OptimizeForSerialization(-1)
 
-		index, err = final.Bytes()
+		var index []byte
+		var version int
+		index, version, err = final.Bytes(-1)
 		if err != nil {
 			return nil, err
 		}
@@ -751,7 +758,7 @@
 		h := sha1.New()
 		h.Write(index)
 		checksum := hex.EncodeToString(h.Sum(nil))
-		_, err = tx.ExecContext(ctx, insertMeshSQL, id, checksum, index)
+		_, err = tx.ExecContext(ctx, insertMeshSQL, id, checksum, index, version)
 		if err != nil {
 			return nil, err
 		}
--- a/pkg/imports/wg.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/imports/wg.go	Tue Feb 20 21:28:56 2024 +0100
@@ -180,7 +180,7 @@
 `
 )
 
-var continueErr = errors.New("continue")
+var errContinue = errors.New("continue")
 
 // Do implements the actual import.
 func (wg *WaterwayGauge) Do(
@@ -361,7 +361,7 @@
 				case err != nil:
 					feedback.Error(pgxutils.ReadableError{Err: err}.Error())
 					unchanged++
-					return continueErr
+					return errContinue
 				case isNew:
 					var lu *time.Time
 					if dr.Lastupdate != nil {
@@ -388,7 +388,7 @@
 					); err != nil {
 						key := pgxutils.ReadableError{Err: err}.Error()
 						databaseErrors[key] = append(databaseErrors[key], isrs)
-						return continueErr
+						return errContinue
 					}
 					newGauges = append(newGauges, isrs)
 					//feedback.Info("insert new version")
@@ -417,12 +417,12 @@
 					case err2 == sql.ErrNoRows:
 						//feedback.Info("unchanged")
 						unchanged++
-						return continueErr
+						return errContinue
 					case err2 != nil:
 						key := pgxutils.ReadableError{Err: err2}.Error()
 						databaseErrors[key] = append(databaseErrors[key], isrs)
 						unchanged++
-						return continueErr
+						return errContinue
 					default:
 						updatedGauges = append(updatedGauges, isrs)
 						//feedback.Info("update")
@@ -477,7 +477,7 @@
 					key := pgxutils.ReadableError{Err: err}.Error()
 					databaseErrors[key] = append(databaseErrors[key], isrs)
 					unchanged++
-					return continueErr
+					return errContinue
 				}
 
 				// "Upsert" reference water levels
@@ -529,7 +529,7 @@
 				return tx.Commit()
 			}()
 
-			if err != nil && err != continueErr {
+			if err != nil && err != errContinue {
 				return err, nil
 			}
 		}
--- a/pkg/mesh/cache.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/mesh/cache.go	Tue Feb 20 21:28:56 2024 +0100
@@ -48,11 +48,12 @@
 
 const (
 	directMeshSQL = `
-SELECT mesh_index FROM waterway.sounding_results
+SELECT mesh_index, coalesce(mesh_index_version, 1) AS mesh_index_version
+FROM waterway.sounding_results
 WHERE id = $1
 `
 	fetchMeshSQL = `
-SELECT mesh_checksum, mesh_index
+SELECT mesh_checksum, mesh_index, coalesce(mesh_index_version, 1) AS mesh_index_version
 FROM waterway.sounding_results
 WHERE bottleneck_id = $1 AND date_info = $2::date
   AND mesh_checksum IS NOT NULL AND mesh_index IS NOT NULL
@@ -61,7 +62,8 @@
 SELECT CASE
   WHEN mesh_checksum = $3 THEN NULL
   ELSE mesh_index
-  END
+  END,
+  coalesce(mesh_index_version, 1) AS mesh_index_version
 FROM waterway.sounding_results
 WHERE bottleneck_id = $1 AND date_info = $2::date
   AND mesh_checksum IS NOT NULL AND mesh_index IS NOT NULL
@@ -104,12 +106,13 @@
 	id int64,
 ) (*STRTree, error) {
 	var data []byte
-	err := tx.QueryRowContext(ctx, directMeshSQL, id).Scan(&data)
+	var version int
+	err := tx.QueryRowContext(ctx, directMeshSQL, id).Scan(&data, &version)
 	if err != nil {
 		return nil, err
 	}
 	tree := new(STRTree)
-	if err := tree.FromBytes(data); err != nil {
+	if err := tree.FromBytes(data, version); err != nil {
 		return nil, err
 	}
 	return tree, nil
@@ -134,11 +137,12 @@
 
 	var data []byte
 	var checksum string
+	var version int
 
 	if entry == nil {
 		// fetch from database
 		err := conn.QueryRowContext(
-			ctx, fetchMeshSQL, bottleneck, date).Scan(&checksum, &data)
+			ctx, fetchMeshSQL, bottleneck, date).Scan(&checksum, &data, &version)
 		switch {
 		case err == sql.ErrNoRows:
 			return nil, nil
@@ -148,7 +152,7 @@
 	} else {
 		// check if we are not outdated.
 		err := conn.QueryRowContext(
-			ctx, checkMeshSQL, bottleneck, date, entry.checksum).Scan(&data)
+			ctx, checkMeshSQL, bottleneck, date, entry.checksum).Scan(&data, &version)
 		switch {
 		case err == sql.ErrNoRows:
 			return nil, nil
@@ -163,7 +167,7 @@
 
 	tree := new(STRTree)
 
-	if err := tree.FromBytes(data); err != nil {
+	if err := tree.FromBytes(data, version); err != nil {
 		return nil, err
 	}
 
--- a/pkg/mesh/loader.go	Wed Feb 14 16:56:28 2024 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,169 +0,0 @@
-// 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 mesh
-
-import (
-	"bufio"
-	"bytes"
-	"compress/gzip"
-	"encoding/binary"
-
-	"gemma.intevation.de/gemma/pkg/log"
-)
-
-func (s *STRTree) deserializeIndex(r *bufio.Reader) error {
-	var numIndex int32
-	if err := binary.Read(r, binary.LittleEndian, &numIndex); err != nil {
-		return err
-	}
-	index := make([]int32, numIndex)
-	s.index = index
-
-	var last int32
-	for i := range index {
-		v, err := binary.ReadVarint(r)
-		if err != nil {
-			return err
-		}
-		value := int32(v) + last
-		index[i] = value
-		last = value
-	}
-
-	return nil
-}
-
-func (s *STRTree) deserializeBBoxes(r *bufio.Reader) error {
-
-	var numBBoxes int32
-	if err := binary.Read(r, binary.LittleEndian, &numBBoxes); err != nil {
-		return err
-	}
-
-	bboxes := make([]Box2D, numBBoxes)
-	s.bboxes = bboxes
-
-	var err error
-
-	read := func(v *float64) {
-		if err == nil {
-			err = binary.Read(r, binary.LittleEndian, v)
-		}
-	}
-
-	for i := range bboxes {
-		read(&bboxes[i].X1)
-		read(&bboxes[i].Y1)
-		read(&bboxes[i].X2)
-		read(&bboxes[i].Y2)
-	}
-
-	return err
-}
-
-func (s *STRTree) deserialize(r *bufio.Reader) error {
-	s.tin = new(Tin)
-
-	if err := s.tin.Deserialize(r); err != nil {
-		return err
-	}
-	var numEntries uint8
-	if err := binary.Read(r, binary.LittleEndian, &numEntries); err != nil {
-		return err
-	}
-	s.Entries = int(numEntries)
-
-	if err := s.deserializeIndex(r); err != nil {
-		return err
-	}
-
-	return s.deserializeBBoxes(r)
-}
-
-// FromBytes restores a STRTree from a binary representation.
-func (s *STRTree) FromBytes(data []byte) error {
-	r, err := gzip.NewReader(bytes.NewReader(data))
-	if err != nil {
-		return err
-	}
-	return s.deserialize(bufio.NewReader(r))
-}
-
-// Deserialize restores a TIN from a binary representation.
-func (t *Tin) Deserialize(r *bufio.Reader) error {
-
-	if err := binary.Read(r, binary.LittleEndian, &t.EPSG); err != nil {
-		return err
-	}
-
-	log.Infof("EPSG: %d\n", t.EPSG)
-
-	if err := t.Min.Read(r); err != nil {
-		return err
-	}
-
-	if err := t.Max.Read(r); err != nil {
-		return err
-	}
-
-	log.Infof("BBOX: [[%f, %f, %f], [%f, %f, %f]]\n",
-		t.Min.X, t.Min.Y, t.Min.Z,
-		t.Max.X, t.Max.Y, t.Max.Z)
-
-	var numVertices uint32
-	if err := binary.Read(r, binary.LittleEndian, &numVertices); err != nil {
-		return err
-	}
-
-	log.Infof("vertices: %d\n", numVertices)
-
-	vertices := make([]Vertex, numVertices)
-	t.Vertices = vertices
-
-	for i := range vertices {
-		if err := vertices[i].Read(r); err != nil {
-			return err
-		}
-	}
-
-	var numTriangles uint32
-	if err := binary.Read(r, binary.LittleEndian, &numTriangles); err != nil {
-		return err
-	}
-
-	log.Infof("triangles: %d\n", numTriangles)
-
-	indices := make([]int32, 3*numTriangles)
-	triangles := make([][]int32, numTriangles)
-	t.Triangles = triangles
-
-	var last int32
-
-	for i := range triangles {
-		tri := indices[:3]
-		indices = indices[3:]
-		triangles[i] = tri
-		for j := range tri {
-			v, err := binary.ReadVarint(r)
-			if err != nil {
-				return err
-			}
-			value := int32(v) + last
-			tri[j] = value
-			last = value
-		}
-	}
-
-	return nil
-}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pkg/mesh/meshserialize.go	Tue Feb 20 21:28:56 2024 +0100
@@ -0,0 +1,190 @@
+// 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 mesh
+
+import (
+	"bufio"
+	"bytes"
+	"compress/gzip"
+	"encoding/binary"
+	"fmt"
+	"io"
+
+	"gemma.intevation.de/gemma/pkg/log"
+)
+
+// Version is current version of the format the mesh index is stored in.
+const Version = 2
+
+// magicHeader is a magic header to tell if the data blob is a mesh index.
+const magicHeader = "SR3D"
+
+// coalesceVersion returns the most recent version if version is less or equal zero.
+func coalesceVersion(version int) int {
+	if version > 0 {
+		return version
+	}
+	return Version
+}
+
+// OptimizeForSerialization apply version specific storage optimizations
+// before serialization.
+func (s *STRTree) OptimizeForSerialization(version int) {
+	version = coalesceVersion(version)
+	if version == 2 {
+		s.optimizeForSerializationV2()
+	}
+}
+
+// Bytes serializes this tree to a byte slice.
+func (s *STRTree) Bytes(version int) ([]byte, int, error) {
+	var buf bytes.Buffer
+	w, err := gzip.NewWriterLevel(&buf, gzip.BestSpeed)
+	if err != nil {
+		return nil, 0, err
+	}
+	version = coalesceVersion(version)
+	if err := s.serializeVn(w, version); err != nil {
+		return nil, 0, err
+	}
+	if err := w.Close(); err != nil {
+		return nil, 0, err
+	}
+	return buf.Bytes(), version, nil
+}
+
+func (s *STRTree) serializeVn(w io.Writer, version int) error {
+	switch version {
+	case 1:
+		return s.serializeV1(w)
+	case 2:
+		return s.serializeV2(w)
+	default:
+		return fmt.Errorf("cannot serialize mesh version %d", version)
+	}
+}
+
+// FromBytes restores a STRTree from a binary representation.
+func (s *STRTree) FromBytes(data []byte, version int) error {
+	version = coalesceVersion(version)
+	r, err := gzip.NewReader(bytes.NewReader(data))
+	if err != nil {
+		return err
+	}
+	return s.deserialize(bufio.NewReader(r), version)
+}
+
+func (s *STRTree) deserialize(r *bufio.Reader, version int) error {
+	header, err := r.Peek(8)
+	if err != nil {
+		return err
+	}
+	if bytes.HasPrefix(header, []byte(magicHeader)) {
+		realVersion := int(binary.LittleEndian.Uint32(header[4:]))
+		if realVersion != version {
+			return fmt.Errorf("mesh version mismatch: Have %d expect %d",
+				realVersion, version)
+		}
+		// Skip the header
+		if _, err := r.Discard(8); err != nil {
+			return err
+		}
+		return s.deserializeVn(r, realVersion)
+	}
+	return s.deserializeV1(r)
+}
+
+func (s *STRTree) deserializeVn(r *bufio.Reader, version int) error {
+	switch version {
+	case 1:
+		return s.deserializeV1(r)
+	case 2:
+		return s.deserializeV2(r)
+	default:
+		return fmt.Errorf("cannot deserialize mesh version %d", version)
+	}
+}
+
+// serializer is a generic function to apply a chain of
+// serializer/deserializer functions to an object given a reader or writer.
+func serializer[T, S any](
+	s S,
+	t T,
+	fns ...func(T, S) error,
+) error {
+	for _, fn := range fns {
+		if err := fn(t, s); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (s *STRTree) serializeEntries(w io.Writer) error {
+	return binary.Write(w, binary.LittleEndian, uint8(s.Entries))
+}
+
+func (s *STRTree) deserializeEntries(r *bufio.Reader) error {
+	var numEntries uint8
+	if err := binary.Read(r, binary.LittleEndian, &numEntries); err != nil {
+		return err
+	}
+	s.Entries = int(numEntries)
+	return nil
+}
+
+func (t *Tin) serializeExtent(w io.Writer) error {
+	if err := t.Min.Write(w); err != nil {
+		return err
+	}
+	return t.Max.Write(w)
+}
+
+func (t *Tin) deserializeExtent(r *bufio.Reader) error {
+	if err := t.Min.Read(r); err != nil {
+		return err
+	}
+	if err := t.Max.Read(r); err != nil {
+		return err
+	}
+	log.Infof("BBOX: [[%f, %f, %f], [%f, %f, %f]]\n",
+		t.Min.X, t.Min.Y, t.Min.Z,
+		t.Max.X, t.Max.Y, t.Max.Z)
+	return nil
+}
+
+func (t *Tin) serializeEPSG(w io.Writer) error {
+	return binary.Write(w, binary.LittleEndian, t.EPSG)
+}
+
+func (t *Tin) deserializeEPSG(r *bufio.Reader) error {
+	if err := binary.Read(r, binary.LittleEndian, &t.EPSG); err != nil {
+		return err
+	}
+	log.Infof("EPSG: %d\n", t.EPSG)
+	return nil
+}
+
+func serializeHeader() func(*STRTree, io.Writer) error {
+	return func(_ *STRTree, w io.Writer) error {
+		_, err := w.Write([]byte(magicHeader))
+		return err
+	}
+}
+
+func serializeVersion(version int) func(*STRTree, io.Writer) error {
+	return func(_ *STRTree, w io.Writer) error {
+		return binary.Write(w, binary.LittleEndian, uint32(version))
+	}
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pkg/mesh/meshserialize_v1.go	Tue Feb 20 21:28:56 2024 +0100
@@ -0,0 +1,251 @@
+// 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) 2024 by via donau
+//   – Österreichische Wasserstraßen-Gesellschaft mbH
+// Software engineering by Intevation GmbH
+//
+// Author(s):
+//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>
+
+package mesh
+
+import (
+	"bufio"
+	"encoding/binary"
+	"io"
+	"math"
+
+	"gemma.intevation.de/gemma/pkg/log"
+)
+
+func (s *STRTree) serializeV1(w io.Writer) error {
+	return serializer(w, s,
+		(*STRTree).serializeTinV1,
+		(*STRTree).serializeEntries,
+		(*STRTree).serializeIndexV1,
+		(*STRTree).serializeBBoxesV1,
+	)
+}
+
+func (s *STRTree) serializeTinV1(w io.Writer) error {
+	return s.tin.serializeV1(w)
+}
+
+func (s *STRTree) serializeBBoxesV1(w io.Writer) error {
+	if err := binary.Write(w, binary.LittleEndian, int32(len(s.bboxes))); err != nil {
+		return err
+	}
+	var err error
+	write := func(v float64) {
+		if err == nil {
+			err = binary.Write(w, binary.LittleEndian, math.Float64bits(v))
+		}
+	}
+	for _, box := range s.bboxes {
+		write(box.X1)
+		write(box.Y1)
+		write(box.X2)
+		write(box.Y2)
+	}
+	return err
+}
+
+func (s *STRTree) serializeIndexV1(w io.Writer) error {
+	if err := binary.Write(w, binary.LittleEndian, int32(len(s.index))); err != nil {
+		return err
+	}
+	var buf [binary.MaxVarintLen32]byte
+	var last int32
+	var written int
+	for _, x := range s.index {
+		delta := x - last
+		n := binary.PutVarint(buf[:], int64(delta))
+		for p := buf[:n]; len(p) > 0; p = p[n:] {
+			var err error
+			if n, err = w.Write(p); err != nil {
+				return err
+			}
+			written += n
+		}
+		last = x
+	}
+	log.Infof("compressed index in bytes: %d %.2f (%d %.2f)\n",
+		written,
+		float64(written)/(1024*1024),
+		4*len(s.index),
+		float64(4*len(s.index))/(1024*1024),
+	)
+	return nil
+}
+
+func (t *Tin) serializeV1(w io.Writer) error {
+	return serializer(w, t,
+		(*Tin).serializeEPSG,
+		(*Tin).serializeExtent,
+		(*Tin).serializeVerticesV1,
+		(*Tin).serializeTrianglesV1,
+	)
+}
+
+func (t *Tin) serializeTrianglesV1(w io.Writer) error {
+	if err := binary.Write(
+		w, binary.LittleEndian, uint32(len(t.Triangles))); err != nil {
+		return err
+	}
+	var buf [binary.MaxVarintLen32]byte
+	var written int
+	var last int32
+	for _, triangle := range t.Triangles {
+		for _, idx := range triangle {
+			value := idx - last
+			n := binary.PutVarint(buf[:], int64(value))
+			for p := buf[:n]; len(p) > 0; p = p[n:] {
+				var err error
+				if n, err = w.Write(p); err != nil {
+					return err
+				}
+				written += n
+			}
+			last = idx
+		}
+	}
+	log.Infof("compressed tin indices in bytes: %d (%d)\n",
+		written, 3*4*len(t.Triangles))
+	return nil
+}
+
+func (t *Tin) serializeVerticesV1(w io.Writer) error {
+	if err := binary.Write(
+		w, binary.LittleEndian, uint32(len(t.Vertices))); err != nil {
+		return err
+	}
+	var err error
+	vwrite := func(v float64) {
+		if err == nil {
+			err = binary.Write(w, binary.LittleEndian, math.Float64bits(v))
+		}
+	}
+	for _, v := range t.Vertices {
+		vwrite(v.X)
+		vwrite(v.Y)
+		vwrite(v.Z)
+	}
+	if err != nil {
+		return err
+	}
+	log.Infof("vertices %d (%d)\n", len(t.Vertices), len(t.Vertices)*3*8)
+	return nil
+}
+
+func (s *STRTree) deserializeV1(r *bufio.Reader) error {
+	return serializer(r, s,
+		(*STRTree).deserializeTinV1,
+		(*STRTree).deserializeEntries,
+		(*STRTree).deserializeIndexV1,
+		(*STRTree).deserializeBBoxesV1,
+	)
+}
+
+func (s *STRTree) deserializeBBoxesV1(r *bufio.Reader) error {
+	var numBBoxes int32
+	if err := binary.Read(r, binary.LittleEndian, &numBBoxes); err != nil {
+		return err
+	}
+	bboxes := make([]Box2D, numBBoxes)
+	s.bboxes = bboxes
+	var err error
+	read := func(v *float64) {
+		if err == nil {
+			err = binary.Read(r, binary.LittleEndian, v)
+		}
+	}
+	for i := range bboxes {
+		read(&bboxes[i].X1)
+		read(&bboxes[i].Y1)
+		read(&bboxes[i].X2)
+		read(&bboxes[i].Y2)
+	}
+	return err
+}
+
+func (s *STRTree) deserializeIndexV1(r *bufio.Reader) error {
+	var numIndex int32
+	if err := binary.Read(r, binary.LittleEndian, &numIndex); err != nil {
+		return err
+	}
+	index := make([]int32, numIndex)
+	s.index = index
+	var last int32
+	for i := range index {
+		v, err := binary.ReadVarint(r)
+		if err != nil {
+			return err
+		}
+		value := int32(v) + last
+		index[i] = value
+		last = value
+	}
+	return nil
+}
+
+func (s *STRTree) deserializeTinV1(r *bufio.Reader) error {
+	s.tin = new(Tin)
+	return s.tin.deserializeV1(r)
+}
+
+// deserializeV1 restores a TIN from a binary representation.
+func (t *Tin) deserializeV1(r *bufio.Reader) error {
+	return serializer(r, t,
+		(*Tin).deserializeEPSG,
+		(*Tin).deserializeExtent,
+		(*Tin).deserializeVerticesV1,
+		(*Tin).deserializeTrianglesV1,
+	)
+}
+
+func (t *Tin) deserializeVerticesV1(r *bufio.Reader) error {
+	var numVertices uint32
+	if err := binary.Read(r, binary.LittleEndian, &numVertices); err != nil {
+		return err
+	}
+	log.Infof("vertices: %d\n", numVertices)
+	vertices := make([]Vertex, numVertices)
+	t.Vertices = vertices
+	for i := range vertices {
+		if err := vertices[i].Read(r); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (t *Tin) deserializeTrianglesV1(r *bufio.Reader) error {
+	var numTriangles uint32
+	if err := binary.Read(r, binary.LittleEndian, &numTriangles); err != nil {
+		return err
+	}
+	log.Infof("triangles: %d\n", numTriangles)
+	indices := make([]int32, 3*numTriangles)
+	triangles := make([][]int32, numTriangles)
+	t.Triangles = triangles
+	var last int32
+	for i := range triangles {
+		tri := indices[:3]
+		indices = indices[3:]
+		triangles[i] = tri
+		for j := range tri {
+			v, err := binary.ReadVarint(r)
+			if err != nil {
+				return err
+			}
+			value := int32(v) + last
+			tri[j] = value
+			last = value
+		}
+	}
+	return nil
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pkg/mesh/meshserialize_v2.go	Tue Feb 20 21:28:56 2024 +0100
@@ -0,0 +1,324 @@
+// 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) 2024 by via donau
+//   – Österreichische Wasserstraßen-Gesellschaft mbH
+// Software engineering by Intevation GmbH
+//
+// Author(s):
+//  * Sascha L. Teichmann <sascha.teichmann@intevation.de>
+
+package mesh
+
+import (
+	"bufio"
+	"cmp"
+	"encoding/binary"
+	"io"
+	"math"
+	"slices"
+
+	"gemma.intevation.de/gemma/pkg/common"
+)
+
+// QuantScale is the after point scale of the quantization of X/Y data.
+const QuantScale = 1_000
+
+func quant(x float64) int64   { return int64(math.Round(x * QuantScale)) }
+func unquant(x int64) float64 { return float64(x) / QuantScale }
+
+func (s *STRTree) serializeV2(w io.Writer) error {
+	return serializer(w, s,
+		serializeHeader(),
+		serializeVersion(2),
+		(*STRTree).serializeTinV2,
+		(*STRTree).serializeEntries,
+		(*STRTree).serializeIndexV2,
+	)
+}
+
+func (s *STRTree) serializeTinV2(w io.Writer) error {
+	return s.tin.serializeV2(w)
+}
+
+func (t *Tin) serializeV2(w io.Writer) error {
+	return serializer(w, t,
+		(*Tin).serializeEPSG,
+		(*Tin).serializeExtent,
+		(*Tin).serializeVerticesV2,
+		(*Tin).serializeTrianglesV2,
+	)
+}
+
+func zigZag(buf []byte, w io.Writer, x int64) error {
+	_, err := w.Write(buf[:binary.PutVarint(buf, x)])
+	return err
+}
+
+func (t *Tin) serializeVerticesV2(w io.Writer) error {
+	vertices := t.Vertices
+	if err := binary.Write(w, binary.LittleEndian, uint32(len(vertices))); err != nil {
+		return err
+	}
+	m := t.Min
+	buf := make([]byte, binary.MaxVarintLen64)
+	for dim := 0; dim <= 2; dim++ {
+		delta := common.Delta()
+		for i := range vertices {
+			var v float64
+			switch dim {
+			case 0:
+				v = vertices[i].X - m.X
+			case 1:
+				v = vertices[i].Y - m.Y
+			case 2:
+				v = vertices[i].Z - m.Z
+			}
+			q := quant(v)
+			d := delta(q)
+			if err := zigZag(buf, w, d); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (t *Tin) serializeTrianglesV2(w io.Writer) error {
+	triangles := t.Triangles
+	if err := binary.Write(w, binary.LittleEndian, uint32(len(triangles))); err != nil {
+		return err
+	}
+	buf := make([]byte, binary.MaxVarintLen64)
+	delta := common.Delta()
+	for _, tri := range triangles {
+		for _, idx := range tri {
+			d := delta(int64(idx))
+			if err := zigZag(buf, w, d); err != nil {
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+func (s *STRTree) serializeIndexV2(w io.Writer) error {
+	index := s.index
+	if err := binary.Write(w, binary.LittleEndian, uint32(len(index))); err != nil {
+		return err
+	}
+	buf := make([]byte, binary.MaxVarintLen64)
+	delta := common.Delta()
+	for _, idx := range index {
+		d := delta(int64(idx))
+		if err := zigZag(buf, w, d); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (s *STRTree) deserializeV2(r *bufio.Reader) error {
+	// The header is already skipped here.
+	if err := serializer(r, s,
+		(*STRTree).deserializeTinV2,
+		(*STRTree).deserializeEntries,
+		(*STRTree).deserializeIndexV2,
+	); err != nil {
+		return err
+	}
+	s.rebuildBBoxes()
+	return nil
+}
+
+func (s *STRTree) deserializeTinV2(r *bufio.Reader) error {
+	s.tin = new(Tin)
+	return s.tin.deserializeV2(r)
+}
+
+func (s *STRTree) deserializeIndexV2(r *bufio.Reader) error {
+	var numIndices uint32
+	if err := binary.Read(r, binary.LittleEndian, &numIndices); err != nil {
+		return err
+	}
+	index := make([]int32, numIndices)
+	s.index = index
+	invDelta := common.InvDelta()
+	for i := range index {
+		d, err := binary.ReadVarint(r)
+		if err != nil {
+			return err
+		}
+		index[i] = int32(invDelta(d))
+	}
+	return nil
+}
+
+func (t *Tin) deserializeV2(r *bufio.Reader) error {
+	return serializer(r, t,
+		(*Tin).deserializeEPSG,
+		(*Tin).deserializeExtent,
+		(*Tin).deserializeVerticesV2,
+		(*Tin).deserializeTrianglesV2,
+	)
+}
+
+func (t *Tin) deserializeVerticesV2(r *bufio.Reader) error {
+	var numVertices uint32
+	if err := binary.Read(r, binary.LittleEndian, &numVertices); err != nil {
+		return err
+	}
+	vertices := make([]Vertex, numVertices)
+	t.Vertices = vertices
+	m := t.Min
+	for dim := 0; dim <= 2; dim++ {
+		invDelta := common.InvDelta()
+		for i := range vertices {
+			d, err := binary.ReadVarint(r)
+			if err != nil {
+				return err
+			}
+			v := unquant(invDelta(d))
+			switch dim {
+			case 0:
+				vertices[i].X = v + m.X
+			case 1:
+				vertices[i].Y = v + m.Y
+			case 2:
+				vertices[i].Z = v + m.Z
+			}
+		}
+	}
+	return nil
+}
+
+func (t *Tin) deserializeTrianglesV2(r *bufio.Reader) error {
+	var numTriangles uint32
+	if err := binary.Read(r, binary.LittleEndian, &numTriangles); err != nil {
+		return err
+	}
+	indices := make([]int32, 3*numTriangles)
+	triangles := make([][]int32, numTriangles)
+	t.Triangles = triangles
+	invDelta := common.InvDelta()
+	for i := range triangles {
+		tri := indices[:3]
+		indices = indices[3:]
+		triangles[i] = tri
+		for j := range tri {
+			v, err := binary.ReadVarint(r)
+			if err != nil {
+				return err
+			}
+			tri[j] = int32(invDelta(v))
+		}
+	}
+	return nil
+}
+
+// optimizeForSerializationV2 prepares the mesh to be stored in V2.
+func (s *STRTree) optimizeForSerializationV2() {
+	s.removeUnusedTriangles()
+	s.sortVertices()
+	s.sortIndices()
+}
+
+// removeUnusedTriangles removes all triangles from the
+// TIN that are not registered in the spatial index.
+func (s *STRTree) removeUnusedTriangles() {
+	used := make([]bool, len(s.tin.Triangles))
+	unused := len(used)
+	s.allTriangleIndices(func(indices []int32) {
+		for _, idx := range indices {
+			used[idx] = true
+			unused-- // They only occur once in the spatial index.
+		}
+	})
+	if unused <= 0 {
+		return
+	}
+	newTris := make([][]int32, 0, len(s.tin.Triangles)-unused)
+	remap := map[int32]int32{}
+	for idx, tri := range s.tin.Triangles {
+		if used[idx] {
+			remap[int32(idx)] = int32(len(newTris))
+			newTris = append(newTris, tri)
+		}
+	}
+	s.tin.Triangles = newTris
+	// Update the spatial index as the gaps are now closed.
+	s.allTriangleIndices(func(indices []int32) {
+		for i, idx := range indices {
+			indices[i] = remap[idx]
+		}
+	})
+}
+
+// sortVertices so that the deltas between neighbors are minimized.
+func (s *STRTree) sortVertices() {
+	vertices := s.tin.Vertices
+	indices := make([]int32, len(vertices))
+	for i := range indices {
+		indices[i] = int32(i)
+	}
+
+	// Take aspect ratio of bbox into account.
+	width := s.tin.Max.X - s.tin.Min.X
+	height := s.tin.Max.Y - s.tin.Min.Y
+	if width == 0 || height == 0 {
+		return
+	}
+
+	// v = len(vertices)
+	// r = max(w, h)/min(w, h)
+	// n * t = v <=> n = v/t
+	// n / t = r <=> n = r*t
+	// v/t = r*t
+	// v = r*t^2
+	// v/r = t^2
+	// t = sqrt(v/r)
+	r := float64(max(width, height)) / float64(min(width, height))
+	t := int(math.Ceil(math.Sqrt(float64(len(vertices)) / r)))
+
+	var d1, d2 func(int32, int32) int
+
+	if width > height {
+		// Sort in X first and slices alternating up and down
+		slices.SortFunc(indices, func(a, b int32) int {
+			return cmp.Compare(vertices[a].X, vertices[b].X)
+		})
+		d1 = func(a, b int32) int { return cmp.Compare(vertices[a].Y, vertices[b].Y) }
+		d2 = func(a, b int32) int { return cmp.Compare(vertices[b].Y, vertices[a].Y) }
+	} else {
+		// Sort in Y first and slices alternating left and right
+		slices.SortFunc(indices, func(a, b int32) int {
+			return cmp.Compare(vertices[a].Y, vertices[b].Y)
+		})
+		d1 = func(a, b int32) int { return cmp.Compare(vertices[a].X, vertices[b].X) }
+		d2 = func(a, b int32) int { return cmp.Compare(vertices[b].X, vertices[a].X) }
+	}
+
+	for p := indices; len(p) > 0; d1, d2 = d2, d1 {
+		l := min(len(p), t)
+		slices.SortStableFunc(p[:l], d1)
+		p = p[l:]
+	}
+
+	v2 := make([]Vertex, len(vertices))
+	reindices := make([]int32, len(indices))
+	for i, idx := range indices {
+		v2[i] = vertices[idx]
+		reindices[idx] = int32(i)
+	}
+	copy(vertices, v2)
+
+	// Update the indices in the triangles.
+	for _, tri := range s.tin.Triangles {
+		for i, idx := range tri {
+			tri[i] = reindices[idx]
+		}
+	}
+}
--- a/pkg/mesh/raster.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/mesh/raster.go	Tue Feb 20 21:28:56 2024 +0100
@@ -104,8 +104,10 @@
 					n++
 				}
 
-				if n > 0 {
+				if n > 0 && !math.IsNaN(sum) {
 					row[j] = sum / float64(n)
+				} else {
+					row[j] = noData
 				}
 				px += r.CellSize
 			}
@@ -168,7 +170,7 @@
 					n++
 				}
 
-				if n > 0 {
+				if n > 0 && !math.IsNaN(sum) {
 					row[j] -= sum / float64(n)
 				} else {
 					row[j] = noData
--- a/pkg/mesh/strtree.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/mesh/strtree.go	Tue Feb 20 21:28:56 2024 +0100
@@ -14,14 +14,11 @@
 package mesh
 
 import (
-	"bytes"
-	"compress/gzip"
-	"encoding/binary"
-	"io"
+	"cmp"
 	"math"
-	"sort"
-
-	"gemma.intevation.de/gemma/pkg/log"
+	"runtime"
+	"slices"
+	"sync"
 )
 
 // STRTreeDefaultEntries is the default number of children per node and leaf.
@@ -169,6 +166,132 @@
 	s.index[0] = root
 }
 
+// countNodes returns the number of nodes for a given index.
+func (s *STRTree) countNodes() int {
+	if len(s.index) == 0 {
+		return 0
+	}
+	count := 0
+	stack := []int32{s.index[0]}
+	for len(stack) > 0 {
+		top := stack[len(stack)-1]
+		stack = stack[:len(stack)-1]
+		count++
+		if top > 0 { // node
+			n := s.index[top+1]
+			stack = append(stack, s.index[top+2:top+2+n]...)
+		}
+	}
+	return count
+}
+
+// rebuildBBoxes rebuilds the bounding boxes for a given index and triangles.
+func (s *STRTree) rebuildBBoxes() {
+
+	num := s.countNodes()
+	if num == 0 {
+		return
+	}
+	bboxes := make([]Box2D, num)
+	s.bboxes = bboxes
+
+	var recurse func(int32, int32) Box2D
+	recurse = func(top, depth int32) Box2D {
+		var box Box2D
+		if top > 0 { // node
+			n := s.index[top+1]
+			for i, child := range s.index[top+2 : top+2+n] {
+				if i == 0 {
+					box = recurse(child, depth+1)
+				} else {
+					box = box.Union(recurse(child, depth+1))
+				}
+			}
+		} else { // leaf
+			top = -top - 1
+			n := s.index[top+1]
+			for i, idx := range s.index[top+2 : top+2+n] {
+				ti := s.tin.Triangles[idx]
+				t := Triangle{
+					s.tin.Vertices[ti[2]],
+					s.tin.Vertices[ti[0]],
+					s.tin.Vertices[ti[1]],
+				}
+				if i == 0 {
+					box = t.BBox()
+				} else {
+					box = box.Union(t.BBox())
+				}
+			}
+		}
+		bboxes[s.index[top]] = box
+		return box
+	}
+
+	// Check if we can boost re-building with some extra CPU cores.
+	cpus := max(1, runtime.NumCPU()/2)
+	if cpus == 1 {
+		recurse(s.index[0], 0)
+		return
+	}
+
+	type job struct {
+		top   int32
+		depth int32
+		store func(Box2D)
+	}
+
+	jobs := make(chan job)
+	var wg sync.WaitGroup
+
+	singleThreaded := recurse
+
+	for i := 0; i < cpus; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			for j := range jobs {
+				j.store(singleThreaded(j.top, j.depth))
+			}
+		}()
+	}
+
+	recurse = func(top, depth int32) Box2D {
+		// Only handle nodes at level 1.
+		if depth != 1 || top <= 0 {
+			return singleThreaded(top, depth)
+		}
+		var (
+			box   Box2D
+			done  = make(chan struct{})
+			n     = s.index[top+1]
+			count int32
+			mu    sync.Mutex
+		)
+		store := func(b Box2D) {
+			mu.Lock()
+			defer mu.Unlock()
+			if count == 0 {
+				box = b
+			} else {
+				box = box.Union(b)
+			}
+			if count++; count >= n {
+				close(done)
+			}
+		}
+		for _, child := range s.index[top+2 : top+2+n] {
+			jobs <- job{top: child, depth: depth + 1, store: store}
+		}
+		<-done
+		bboxes[s.index[top]] = box
+		return box
+	}
+	recurse(s.index[0], 0)
+	close(jobs)
+	wg.Wait()
+}
+
 // BuildWithout builds a tree for a given TIN ignoring the triangles
 // with the indices given in the remove map.
 func (s *STRTree) BuildWithout(t *Tin, remove map[int32]struct{}) {
@@ -252,95 +375,6 @@
 	return removed
 }
 
-func (s *STRTree) serializeIndex(w io.Writer) error {
-
-	if err := binary.Write(w, binary.LittleEndian, int32(len(s.index))); err != nil {
-		return err
-	}
-
-	var buf [binary.MaxVarintLen32]byte
-
-	var last int32
-	var written int
-
-	for _, x := range s.index {
-		delta := x - last
-		n := binary.PutVarint(buf[:], int64(delta))
-		for p := buf[:n]; len(p) > 0; p = p[n:] {
-			var err error
-			if n, err = w.Write(p); err != nil {
-				return err
-			}
-			written += n
-		}
-		last = x
-	}
-
-	log.Infof("compressed index in bytes: %d %.2f (%d %.2f)\n",
-		written,
-		float64(written)/(1024*1024),
-		4*len(s.index),
-		float64(4*len(s.index))/(1024*1024),
-	)
-
-	return nil
-}
-
-func (s *STRTree) serializeBBoxes(w io.Writer) (rr error) {
-
-	if err := binary.Write(w, binary.LittleEndian, int32(len(s.bboxes))); err != nil {
-		return err
-	}
-
-	var err error
-
-	write := func(v float64) {
-		if err == nil {
-			err = binary.Write(w, binary.LittleEndian, math.Float64bits(v))
-		}
-	}
-	for _, box := range s.bboxes {
-		write(box.X1)
-		write(box.Y1)
-		write(box.X2)
-		write(box.Y2)
-	}
-
-	return err
-}
-
-// Bytes serializes this tree to a byte slice.
-func (s *STRTree) Bytes() ([]byte, error) {
-
-	var buf bytes.Buffer
-	w, err := gzip.NewWriterLevel(&buf, gzip.BestSpeed)
-	if err != nil {
-		return nil, err
-	}
-
-	if err := s.tin.serialize(w); err != nil {
-		return nil, err
-	}
-
-	if err := binary.Write(w, binary.LittleEndian, uint8(s.Entries)); err != nil {
-		return nil, err
-	}
-
-	if err := s.serializeIndex(w); err != nil {
-		return nil, err
-	}
-
-	if err := s.serializeBBoxes(w); err != nil {
-		return nil, err
-	}
-
-	if err := w.Close(); err != nil {
-		return nil, err
-	}
-
-	return buf.Bytes(), nil
-}
-
 func (s *STRTree) allTriangles(pos int32, tris map[int32]struct{}) {
 	stack := []int32{pos}
 	for len(stack) > 0 {
@@ -360,10 +394,10 @@
 }
 
 func (s *STRTree) build(items []int32) int32 {
-	sort.Slice(items, func(i, j int) bool {
-		ti := s.tin.Triangles[items[i]]
-		tj := s.tin.Triangles[items[j]]
-		return s.tin.Vertices[ti[0]].X < s.tin.Vertices[tj[0]].X
+	slices.SortFunc(items, func(i, j int32) int {
+		ti := s.tin.Triangles[i]
+		tj := s.tin.Triangles[j]
+		return cmp.Compare(s.tin.Vertices[ti[0]].X, s.tin.Vertices[tj[0]].X)
 	})
 
 	P := int(math.Ceil(float64(len(items)) / float64(s.Entries)))
@@ -373,10 +407,10 @@
 
 	leaves := s.strJoin(
 		slices, S,
-		func(i, j int32) bool {
+		func(i, j int32) int {
 			ti := s.tin.Triangles[i]
 			tj := s.tin.Triangles[j]
-			return s.tin.Vertices[ti[0]].Y < s.tin.Vertices[tj[0]].Y
+			return cmp.Compare(s.tin.Vertices[ti[0]].Y, s.tin.Vertices[tj[0]].Y)
 		},
 		s.allocLeaf,
 	)
@@ -390,8 +424,8 @@
 		return s.allocNode(items)
 	}
 
-	sort.Slice(items, func(i, j int) bool {
-		return s.bbox(items[i]).X1 < s.bbox(items[j]).X1
+	slices.SortFunc(items, func(i, j int32) int {
+		return cmp.Compare(s.bbox(i).X1, s.bbox(j).X1)
 	})
 
 	P := int(math.Ceil(float64(len(items)) / float64(s.Entries)))
@@ -401,7 +435,7 @@
 
 	nodes := s.strJoin(
 		slices, S,
-		func(i, j int32) bool { return s.bbox(i).Y1 < s.bbox(j).Y1 },
+		func(i, j int32) int { return cmp.Compare(s.bbox(i).Y1, s.bbox(j).Y1) },
 		s.allocNode,
 	)
 
@@ -432,16 +466,14 @@
 }
 
 func (s *STRTree) strJoin(
-	slices [][]int32, S int,
-	less func(int32, int32) bool,
+	slics [][]int32, S int,
+	cmp func(int32, int32) int,
 	alloc func([]int32) int32,
 ) []int32 {
 	nodes := make([]int32, 0, S*S)
 
-	for _, slice := range slices {
-		sort.Slice(slice, func(i, j int) bool {
-			return less(slice[i], slice[j])
-		})
+	for _, slice := range slics {
+		slices.SortFunc(slice, cmp)
 
 		for len(slice) > 0 {
 			var n int
@@ -504,3 +536,43 @@
 	}
 	return int32(-(pos + 1))
 }
+
+// allTriangleIndices passes all triangle indices to callback fn.
+func (s *STRTree) allTriangleIndices(fn func([]int32)) {
+	stack := []int32{s.index[0]}
+	for len(stack) > 0 {
+		top := stack[len(stack)-1]
+		stack = stack[:len(stack)-1]
+		if top > 0 { // node
+			n := s.index[top+1]
+			stack = append(stack, s.index[top+2:top+2+n]...)
+		} else { // leaf
+			top = -top - 1
+			n := s.index[top+1]
+			fn(s.index[top+2 : top+2+n])
+		}
+	}
+}
+
+// sortIndices sorts the indices in the inner nodes and leaves of the tree.
+// This helps if the index array is delta encoded in serialization.
+// It also may help reduding CPU cache line misses during usage because
+// redirects are ordered closer together.
+func (s *STRTree) sortIndices() {
+	stack := []int32{s.index[0]}
+	for len(stack) > 0 {
+		top := stack[len(stack)-1]
+		stack = stack[:len(stack)-1]
+		if top > 0 { // node
+			n := s.index[top+1]
+			children := s.index[top+2 : top+2+n]
+			stack = append(stack, children...)
+			slices.Sort(children)
+		} else { // leaf
+			top = -top - 1
+			n := s.index[top+1]
+			triangles := s.index[top+2 : top+2+n]
+			slices.Sort(triangles)
+		}
+	}
+}
--- a/pkg/mesh/tin.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/mesh/tin.go	Tue Feb 20 21:28:56 2024 +0100
@@ -18,7 +18,6 @@
 	"encoding/binary"
 	"errors"
 	"fmt"
-	"io"
 	"math"
 
 	"gemma.intevation.de/gemma/pkg/log"
@@ -207,67 +206,3 @@
 	}
 	return t.FromWKB(data)
 }
-
-func (t *Tin) serialize(w io.Writer) error {
-
-	if err := binary.Write(w, binary.LittleEndian, t.EPSG); err != nil {
-		return err
-	}
-
-	if err := t.Min.Write(w); err != nil {
-		return err
-	}
-	if err := t.Max.Write(w); err != nil {
-		return err
-	}
-
-	if err := binary.Write(
-		w, binary.LittleEndian, uint32(len(t.Vertices))); err != nil {
-		return err
-	}
-
-	var err error
-	vwrite := func(v float64) {
-		if err == nil {
-			err = binary.Write(w, binary.LittleEndian, math.Float64bits(v))
-		}
-	}
-
-	for _, v := range t.Vertices {
-		vwrite(v.X)
-		vwrite(v.Y)
-		vwrite(v.Z)
-	}
-
-	if err != nil {
-		return err
-	}
-	log.Infof("vertices %d (%d)\n", len(t.Vertices), len(t.Vertices)*3*8)
-
-	if err := binary.Write(
-		w, binary.LittleEndian, uint32(len(t.Triangles))); err != nil {
-		return err
-	}
-
-	var buf [binary.MaxVarintLen32]byte
-	var written int
-	var last int32
-	for _, triangle := range t.Triangles {
-		for _, idx := range triangle {
-			value := idx - last
-			n := binary.PutVarint(buf[:], int64(value))
-			for p := buf[:n]; len(p) > 0; p = p[n:] {
-				var err error
-				if n, err = w.Write(p); err != nil {
-					return err
-				}
-				written += n
-			}
-			last = idx
-		}
-	}
-	log.Infof("compressed tin indices in bytes: %d (%d)\n",
-		written, 3*4*len(t.Triangles))
-
-	return nil
-}
--- a/pkg/mesh/vertex.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/mesh/vertex.go	Tue Feb 20 21:28:56 2024 +0100
@@ -88,7 +88,24 @@
 
 	v0 := t[1].Sub(t[0])
 	v1 := t[2].Sub(t[0])
-	n := v0.Cross(v1).Normalize()
+	n := v0.Cross(v1)
+
+	// If the length of normal is near zero assume we have
+	// a plane constant in z with an average z value of
+	// the three vertices.
+	// This should protect us from the effects of collinear
+	// geometries.
+	l := n.Length()
+	if l < 1e-7 {
+		sum := t[0].Z + t[1].Z + t[2].Z
+		return Plane3D{
+			A: 0,
+			B: 0,
+			C: 1,
+			D: -sum / 3,
+		}
+	}
+	n = n.Scale(1 / l)
 
 	// x*nx+ y*ny+ z*nz + d = 0
 	// d = - (x*nx+ y*ny + z*nz)
@@ -1144,6 +1161,39 @@
 	return out
 }
 
+// QuantizeXY quantize the X/Y values to scale and
+// removes duplicates in place. The z value of
+// duplicates will be averaged pairwise.
+func (mpz MultiPointZ) QuantizeXY(scale float64) MultiPointZ {
+	type qpoint struct {
+		x int64
+		y int64
+	}
+	m := make(map[qpoint]float64, len(mpz))
+	for _, p := range mpz {
+		k := qpoint{
+			x: int64(math.Round(p.X * scale)),
+			y: int64(math.Round(p.Y * scale)),
+		}
+		if z, ok := m[k]; ok {
+			m[k] = (z + p.Z) * 0.5
+		} else {
+			m[k] = p.Z
+		}
+	}
+	i := 0
+	invScale := 1 / scale
+	for k, z := range m {
+		mpz[i] = Vertex{
+			X: float64(k.x) * invScale,
+			Y: float64(k.y) * invScale,
+			Z: z,
+		}
+		i++
+	}
+	return mpz[:i]
+}
+
 // Filter returns a copy removed the vertices which
 // don't pass the filter test.
 func (mpz MultiPointZ) Filter(filter func(Vertex) bool) MultiPointZ {
--- a/pkg/misc/http.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/misc/http.go	Tue Feb 20 21:28:56 2024 +0100
@@ -17,7 +17,6 @@
 	"bufio"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"path/filepath"
@@ -54,7 +53,7 @@
 	}
 	defer f.Close()
 
-	dir, err := ioutil.TempDir(config.TmpDir(), field)
+	dir, err := os.MkdirTemp(config.TmpDir(), field)
 	if err != nil {
 		return "", err
 	}
--- a/pkg/soap/soap.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/soap/soap.go	Tue Feb 20 21:28:56 2024 +0100
@@ -19,7 +19,7 @@
 	"crypto/tls"
 	"encoding/xml"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"math/rand"
 	"net"
 	"net/http"
@@ -311,7 +311,7 @@
 	defer res.Body.Close()
 
 	if res.StatusCode < http.StatusOK || res.StatusCode > 299 {
-		rawbody, err := ioutil.ReadAll(res.Body)
+		rawbody, err := io.ReadAll(res.Body)
 		var body string
 		if err == nil {
 			if len(rawbody) > 1024 {
@@ -325,7 +325,7 @@
 			res.StatusCode, http.StatusText(res.StatusCode), body)
 	}
 
-	rawbody, err := ioutil.ReadAll(res.Body)
+	rawbody, err := io.ReadAll(res.Body)
 	if err != nil {
 		return err
 	}
--- a/pkg/soap/validate.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/soap/validate.go	Tue Feb 20 21:28:56 2024 +0100
@@ -18,7 +18,6 @@
 	"encoding/xml"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -99,7 +98,7 @@
 		} `xml:"http://schemas.xmlsoap.org/soap/envelope/ Body"`
 	}
 
-	content, err := ioutil.ReadAll(r)
+	content, err := io.ReadAll(r)
 	if err != nil {
 		return err
 	}
@@ -127,7 +126,7 @@
 
 	cmd.Stdin = bytes.NewReader(content)
 	cmd.Stderr = &stderr
-	cmd.Stdout = ioutil.Discard
+	cmd.Stdout = io.Discard
 
 	if err := cmd.Start(); err != nil {
 		return err
--- a/pkg/wfs/global.go	Wed Feb 14 16:56:28 2024 +0100
+++ b/pkg/wfs/global.go	Tue Feb 20 21:28:56 2024 +0100
@@ -17,7 +17,6 @@
 	"bufio"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -131,7 +130,7 @@
 	}
 
 	tmpDir := config.TmpDir()
-	dlDir, err := ioutil.TempDir(tmpDir, "wfs-downloads")
+	dlDir, err := os.MkdirTemp(tmpDir, "wfs-downloads")
 	if err != nil {
 		return err
 	}
--- a/schema/gemma.sql	Wed Feb 14 16:56:28 2024 +0100
+++ b/schema/gemma.sql	Tue Feb 20 21:28:56 2024 +0100
@@ -811,6 +811,7 @@
         depth_reference varchar NOT NULL, -- REFERENCES depth_references,
         zpg_exception bool NOT NULL DEFAULT FALSE, -- Found no LDC in ZPG case.
         mesh_checksum varchar,
+        mesh_index_version int,
         mesh_index bytea,
         staging_done boolean NOT NULL DEFAULT false
     )
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/schema/updates/1473/01.sr_v2.sql	Tue Feb 20 21:28:56 2024 +0100
@@ -0,0 +1,2 @@
+ALTER TABLE waterway.sounding_results
+    ADD COLUMN mesh_index_version int;
--- a/schema/version.sql	Wed Feb 14 16:56:28 2024 +0100
+++ b/schema/version.sql	Tue Feb 20 21:28:56 2024 +0100
@@ -1,1 +1,1 @@
-INSERT INTO gemma_schema_version(version) VALUES (1472);
+INSERT INTO gemma_schema_version(version) VALUES (1473);