🐛 Fix seed dup target labels (#776)

Fixes an issue with duplicate target labels.
Also, add support for a hub build version needed to detect upgrades.
The git _tag-hash_ is written to `/etc/hub-build`. The _abbreviated_
commit hash is appended when HEAD is a commit added to the latest label.
Examples:
```
v0.6.0-beta.1-1-e161635  # tag+hash
v0.6.0-beta.1-1          # tag only
e161635                  # hash only
```

After seeded, the build is stored in settings: `.hub.db.seed.build`.
This is compared with current build to detect when the build has
changed. Seeding is _skipped_ when both the build (version) and the seed
data have not changed.

---

The go.mod update was to bump go-utils for better logging of objects.
Included here for better logging of the _Settings_.

---------

Signed-off-by: Jeff Ortel <jortel@redhat.com>
Signed-off-by: Cherry Picker <noreply@github.com>

Dockerfile

@@ -1,4 +1,5 @@
 ARG SEED_ROOT=/opt/app-root/src/tackle2-seed
+
 FROM registry.access.redhat.com/ubi9/go-toolset:latest as builder
 ENV GOPATH=$APP_ROOT
 COPY --chown=1001:0 . .
@@ -15,6 +16,7 @@ FROM quay.io/konveyor/static-report as report
 FROM registry.access.redhat.com/ubi9/ubi-minimal
 ARG SEED_ROOT
 COPY --from=builder /opt/app-root/src/bin/hub /usr/local/bin/tackle-hub
+COPY --from=builder /opt/app-root/src/bin/.build /etc/hub-build
 COPY --from=builder /opt/app-root/src/auth/roles.yaml /tmp/roles.yaml
 COPY --from=builder /opt/app-root/src/auth/users.yaml /tmp/users.yaml
 COPY --from=builder ${SEED_ROOT}/resources/ /tmp/seed

Makefile

@@ -60,6 +60,7 @@ debug: generate fmt vet
 
 docker: vet
 	go build $(BUILD)
+	git describe --always --match "v[0-9]*" --tags HEAD > bin/.build
 
 # Run against the configured Kubernetes cluster in ~/.kube/config
 run: fmt vet

go.mod

@@ -7,14 +7,14 @@ require (
 	github.com/PaesslerAG/gval v1.2.2
 	github.com/andygrunwald/go-jira v1.16.0
 	github.com/gin-gonic/gin v1.9.1
-	github.com/go-logr/logr v1.2.4
+	github.com/go-logr/logr v1.4.1
 	github.com/go-playground/validator/v10 v10.14.0
 	github.com/golang-jwt/jwt/v4 v4.5.0
-	github.com/google/uuid v1.3.0
-	github.com/jortel/go-utils v0.1.2
+	github.com/google/uuid v1.6.0
+	github.com/jortel/go-utils v0.1.4
 	github.com/konveyor/tackle2-seed v0.0.0-20231025181853-8ce94f70f744
 	github.com/mattn/go-sqlite3 v1.14.17
-	github.com/onsi/gomega v1.27.6
+	github.com/onsi/gomega v1.31.1
 	github.com/prometheus/client_golang v1.15.0
 	github.com/swaggo/swag v1.16.1
 	golang.org/x/sys v0.19.0
@@ -54,7 +54,7 @@ require (
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/google/gnostic v0.5.7-v3refs // indirect
-	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/gofuzz v1.1.0 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
@@ -80,7 +80,7 @@ require (
 	github.com/rogpeppe/go-internal v1.10.0 // indirect
 	github.com/segmentio/ksuid v1.0.4 // indirect
 	github.com/shopspring/decimal v1.3.1 // indirect
-	github.com/sirupsen/logrus v1.9.0 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/trivago/tgo v1.0.7 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
@@ -93,7 +93,7 @@ require (
 	golang.org/x/term v0.19.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	golang.org/x/time v0.5.0 // indirect
-	golang.org/x/tools v0.7.0 // indirect
+	golang.org/x/tools v0.16.1 // indirect
 	gomodules.xyz/jsonpatch/v2 v2.2.0 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/protobuf v1.33.0 // indirect

go.sum

@@ -51,8 +51,8 @@ github.com/gin-gonic/gin v1.9.1 h1:4idEAncQnU5cB7BeOkPtxjfCSye0AAm1R0RVIqJ+Jmg=
 github.com/gin-gonic/gin v1.9.1/go.mod h1:hPrL7YrpYKXt5YId3A/Tnip5kqbEAP+KLuI3SUcPTeU=
 github.com/go-logr/logr v0.1.0/go.mod h1:ixOQHD9gLJUVQQ2ZOR7zLEifBX6tGkNJF4QyIY7sIas=
 github.com/go-logr/logr v1.2.0/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
-github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
-github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ=
+github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
 github.com/go-logr/zapr v1.2.3 h1:a9vnzlIBPQBBkeaR9IuMUfmVOrQlkoC4YfPoFkX3T7A=
 github.com/go-openapi/jsonpointer v0.19.3/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
 github.com/go-openapi/jsonpointer v0.19.5/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
@@ -113,16 +113,16 @@ github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.5.8/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/google/go-cmp v0.5.9 h1:O2Tfq5qg4qc4AmwVlvv0oLiVAGB7enBSJ2x2DqQFi38=
-github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD/fhyJ8=
 github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17icRSOU623lUBU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/gofuzz v1.1.0 h1:Hsa8mG0dQ46ij8Sl2AYJDUv1oA9/d6Vk+3LG99Oe02g=
 github.com/google/gofuzz v1.1.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 h1:yAJXTCF9TqKcTiHJAE8dj7HMvPfh66eeA2JYW7eFpSE=
-github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
-github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/imdario/mergo v0.3.12 h1:b6R2BslTbIEToALKP7LxUvijTsNI9TAe80pLWN2g/HU=
 github.com/imdario/mergo v0.3.12/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH0dnCYA=
@@ -131,8 +131,8 @@ github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
 github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
 github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
-github.com/jortel/go-utils v0.1.2 h1:R0TcGRCcwoL793CymcKC5AF9idWXT2cR6eQ2xpBUsoI=
-github.com/jortel/go-utils v0.1.2/go.mod h1:sl6vav63ODI0sUfSz8e0pImNmCVFnVsuOFhZmwe9GDk=
+github.com/jortel/go-utils v0.1.4 h1:DzrID+gI9urEGkOoXYGYIKA/bozEIxmcYV/4cdVjW58=
+github.com/jortel/go-utils v0.1.4/go.mod h1:7vzFYbnb91+ltjjAmCv2jVL4CKX7Onz1i2EQPAvw9Cs=
 github.com/josharian/intern v1.0.0 h1:vlS4z54oSdjm0bgjRigI+G1HpF+tI+9rE5LLzOg8HmY=
 github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
@@ -177,9 +177,9 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8m
 github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
 github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
-github.com/onsi/ginkgo/v2 v2.9.2 h1:BA2GMJOtfGAfagzYtrAlufIP0lq6QERkFmHLMLPwFSU=
-github.com/onsi/gomega v1.27.6 h1:ENqfyGeS5AX/rlXDd/ETokDz93u0YufY1Pgxuy/PvWE=
-github.com/onsi/gomega v1.27.6/go.mod h1:PIQNjfQwkP3aQAH7lf7j87O/5FiNr+ZR8+ipb+qQlhg=
+github.com/onsi/ginkgo/v2 v2.15.0 h1:79HwNRBAZHOEwrczrgSOPy+eFTTlIGELKy5as+ClttY=
+github.com/onsi/gomega v1.31.1 h1:KYppCUK+bUgAZwHOu7EXVBKyQA6ILvOESHkn/tgoqvo=
+github.com/onsi/gomega v1.31.1/go.mod h1:y40C95dwAD1Nz36SsEnxvfFe8FFfNxzI5eJ0EYGyAy0=
 github.com/opentracing/opentracing-go v1.2.0 h1:uEJPy/1a5RIPAJ0Ov+OIO8OxWu77jEv+1B0VhjKrZUs=
 github.com/opentracing/opentracing-go v1.2.0/go.mod h1:GxEUsuufX4nBwe+T+Wl9TAgYrxe9dPLANfrWvHYVTgc=
 github.com/pelletier/go-toml/v2 v2.0.8 h1:0ctb6s9mE31h0/lhu+J6OPmVeDxJn+kYnJc2jZR9tGQ=
@@ -204,8 +204,8 @@ github.com/segmentio/ksuid v1.0.4 h1:sBo2BdShXjmcugAMwjugoGUdUV0pcxY5mW4xKRn3v4c
 github.com/segmentio/ksuid v1.0.4/go.mod h1:/XUiZBD3kVx5SmUOl55voK5yeAbBNNIed+2O73XgrPE=
 github.com/shopspring/decimal v1.3.1 h1:2Usl1nmF/WZucqkFZhnfFYxxxu8LG21F6nPQBE5gKV8=
 github.com/shopspring/decimal v1.3.1/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
-github.com/sirupsen/logrus v1.9.0 h1:trlNQbNUG3OdDrDil03MCb1H2o9nJ1x4/5LYw7byDE0=
-github.com/sirupsen/logrus v1.9.0/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/spf13/afero v1.2.2/go.mod h1:9ZxEEn6pIJ8Rxe320qSDBk6AsU0r9pR7Q4OcevTdifk=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
@@ -258,7 +258,7 @@ golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
-golang.org/x/mod v0.9.0 h1:KENHtAZL2y3NLMYZeHY9DW8HW8V+kQyJsY/V9JlKvCs=
+golang.org/x/mod v0.14.0 h1:dGoOF9QVLYng8IHTm7BAyWqCqSheQ5pYWGhzW00YJr0=
 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 v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -342,8 +342,8 @@ golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roY
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
-golang.org/x/tools v0.7.0 h1:W4OVu8VVOaIO0yzWMNdepAulS7YfoS3Zabrm8DOXXU4=
-golang.org/x/tools v0.7.0/go.mod h1:4pg6aUX35JBAogB10C9AtvVL+qowtN4pT3CGSQex14s=
+golang.org/x/tools v0.16.1 h1:TLyB3WofjdOEepBHAU20JdNC1Zbg87elYofWYAY5oZA=
+golang.org/x/tools v0.16.1/go.mod h1:kYVVN6I1mBNoB1OX+noeBjbRk4IUEPa7JJ+TJMEooJ0=
 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=

seed/pkg.go

@@ -12,10 +12,17 @@ import (
 	"gorm.io/gorm"
 )
 
-var log = logr.WithName("seeding")
+var (
+	Settings = &settings.Settings
+	log      = logr.WithName("seeding")
+)
 
-// SeedKey identifies the setting containing the applied seed digest.
-const SeedKey = ".hub.db.seed"
+const (
+	// SeedKey identifies the setting containing the applied seed digest.
+	SeedKey = ".hub.db.seed"
+	// BuildKey identifies setting for the hub build that seeded.
+	BuildKey = SeedKey + ".build"
+)
 
 // Seeder specifies an interface for seeding DB models.
 type Seeder interface {
@@ -53,12 +60,12 @@ func Seed() (err error) {
 		return
 	}
 
-	match, err := compareChecksum(db, checksum)
+	skipped, err := skip(db, checksum)
 	if err != nil {
 		return
 	}
-	if match {
-		log.Info("Seed checksum match.")
+	if skipped {
+		log.Info("Seeding skipped.")
 		return
 	}
 
@@ -80,7 +87,31 @@ func Seed() (err error) {
 		if err != nil {
 			return
 		}
+		err = saveBuild(tx)
+		if err != nil {
+			return
+		}
 		return
 	})
 	return
 }
+
+// skip returns true when seeding can be skipped.
+func skip(db *gorm.DB, checksum []byte) (skip bool, err error) {
+	match, err := compareChecksum(db, checksum)
+	if err != nil {
+		return
+	}
+	if !match {
+		return
+	}
+	match, err = matchBuild(db)
+	if err != nil {
+		return
+	}
+	if !match {
+		return
+	}
+	skip = true
+	return
+}

seed/seed.go

@@ -81,6 +81,7 @@ func compareChecksum(db *gorm.DB, checksum []byte) (match bool, err error) {
 	}
 
 	match = seededChecksum == fmt.Sprintf("%x", checksum)
+	log.Info("Seed checksum", "matched", match)
 	return
 }
 
@@ -115,3 +116,49 @@ func migrationVersion(db *gorm.DB) (version uint, err error) {
 	version = uint(v.Version)
 	return
 }
+
+// matchBuild
+func matchBuild(db *gorm.DB) (matched bool, err error) {
+	build, err := getBuild(db)
+	if err != nil {
+		return
+	}
+	if build == "" {
+		return
+	}
+	matched = build == Settings.Hub.Build
+	log.Info("Seed build (version)", "matched", matched)
+	return
+}
+
+// getBuild returns the hub build version that seeded.
+func getBuild(db *gorm.DB) (version string, err error) {
+	setting := &model.Setting{
+		Key: BuildKey,
+	}
+	db = db.Where("key", BuildKey)
+	err = db.FirstOrCreate(setting).Error
+	if err != nil {
+		err = liberr.Wrap(err)
+		return
+	}
+	if n, cast := setting.Value.(string); cast {
+		version = n
+	}
+	return
+}
+
+// saveBuild update settings with current build that seeded.
+func saveBuild(db *gorm.DB) (err error) {
+	setting := &model.Setting{
+		Key:   BuildKey,
+		Value: Settings.Hub.Build,
+	}
+	db = db.Where("key", BuildKey)
+	err = db.Updates(setting).Error
+	if err != nil {
+		err = liberr.Wrap(err)
+		return
+	}
+	return
+}

seed/target.go

@@ -87,6 +87,7 @@ func (r *Target) Apply(db *gorm.DB) (err error) {
 		target.Provider = t.Provider
 		target.Choice = t.Choice
 		target.ImageID = f.ID
+		target.Labels = []model.TargetLabel{}
 		for _, l := range t.Labels {
 			target.Labels = append(target.Labels, model.TargetLabel(l))
 		}

settings/hub.go

@@ -1,6 +1,7 @@
 package settings
 
 import (
+	"bufio"
 	"os"
 	"os/user"
 	"strconv"
@@ -9,6 +10,7 @@ import (
 
 const (
 	EnvNamespace               = "NAMESPACE"
+	EnvBuild                   = "BUILD"
 	EnvDbPath                  = "DB_PATH"
 	EnvDbMaxCon                = "DB_MAX_CONNECTION"
 	EnvDbSeedPath              = "DB_SEED_PATH"
@@ -44,6 +46,8 @@ const (
 )
 
 type Hub struct {
+	// build version.
+	Build string
 	// k8s namespace.
 	Namespace string
 	// DB settings.
@@ -124,6 +128,10 @@ type Hub struct {
 
 func (r *Hub) Load() (err error) {
 	var found bool
+	r.Build, err = r.build()
+	if err != nil {
+		return
+	}
 	r.Namespace, err = r.namespace()
 	if err != nil {
 		return
@@ -356,3 +364,30 @@ func (r *Hub) namespace() (ns string, err error) {
 
 	return
 }
+
+// build returns the hub build version.
+// This is expected to be the output of `git describe`.
+// Examples:
+//	v0.6.0-ea89gcd
+//	v0.6.0
+func (r *Hub) build() (version string, err error) {
+	version, found := os.LookupEnv(EnvBuild)
+	if found {
+		return
+	}
+	f, err := os.Open("/etc/hub-build")
+	if err != nil {
+		if os.IsNotExist(err) {
+			err = nil
+			return
+		}
+	}
+	defer func() {
+		_ = f.Close()
+	}()
+	scanner := bufio.NewScanner(f)
+	if scanner.Scan() {
+		version = scanner.Text()
+	}
+	return
+}