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The crawler kind of works!

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This commit is contained in:
akp 2023-11-04 16:46:13 +00:00
parent dd3874eed0
commit ad3bd1a290
10 changed files with 605 additions and 0 deletions
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1
.gitignore vendored
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run/
### Go ### ### Go ###
# Binaries for programs and plugins # Binaries for programs and plugins

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build/Run_crawler Normal file
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crawl/internal/config/config.go Normal file
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package config
import (
"git.tdpain.net/pkg/cfger"
"log/slog"
"os"
"sync"
)
type Config struct {
DatabaseName string
NumWorkers int
MaxPagesPerDomain int
UserAgent string
CrawlDataDir string
}
var (
conf *Config
loadOnce = new(sync.Once)
)
func Get() *Config {
var outerErr error
loadOnce.Do(func() {
cl := cfger.New()
if err := cl.Load("config.yml"); err != nil {
outerErr = err
return
}
conf = &Config{
DatabaseName: cl.WithDefault("crawler.databaseName", "crawler.db").AsString(),
NumWorkers: cl.WithDefault("crawler.numWorkers", 8).AsInt(),
MaxPagesPerDomain: cl.WithDefault("crawler.maxPagesPerDomain", 300).AsInt(),
UserAgent: cl.WithDefault("crawler.userAgent", "Mozilla/5.0 (X11; Linux x86_64; rv:120.0) Gecko/20100101 Firefox/120.0").AsString(),
CrawlDataDir: cl.WithDefault("crawler.dataDir", "crawlData").AsString(),
}
})
if outerErr != nil {
slog.Error("fatal error when loading configuration", "err", outerErr)
os.Exit(1)
}
return conf
}

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crawl/internal/crawlcore/crawl.go Normal file
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package crawlcore
import (
"bytes"
"context"
"database/sql"
"encoding/json"
"errors"
"fmt"
"git.tdpain.net/codemicro/hn84/crawl/internal/config"
"git.tdpain.net/codemicro/hn84/crawl/internal/database"
"git.tdpain.net/codemicro/hn84/util"
"github.com/PuerkitoBio/goquery"
"github.com/carlmjohnson/requests"
"log/slog"
"net/url"
"os"
"path"
"slices"
"strings"
"time"
)
func (c *CrawlCore) Loop(stop chan struct{}) error {
jobs := make(chan *database.Site)
defer func() {
slog.Info("waiting for all workers to terminate")
c.workerWG.Wait()
}()
defer close(jobs)
numWorkers := config.Get().NumWorkers
_ = os.MkdirAll(config.Get().CrawlDataDir, os.ModeDir)
slog.Info("starting workers", "n", numWorkers)
for i := 0; i < numWorkers; i += 1 {
go c.worker(i, jobs)
}
slog.Info("crawl loop alive")
mainLoop:
for {
if stop != nil {
select {
case <-stop:
break mainLoop
default:
}
}
tx, err := c.DB.BeginTx(context.Background(), nil)
if err != nil {
return util.Wrap("create crawl loop transaction", err)
}
site := new(database.Site)
if err := tx.NewSelect().Model(site).Order("id asc").Limit(1).Scan(context.Background(), site); err != nil {
if errors.Is(err, sql.ErrNoRows) {
tx.Rollback()
time.Sleep(time.Second)
continue
}
tx.Rollback()
return util.Wrap("select next site to crawl", err)
}
if _, err := tx.NewDelete().Model(site).Where("id = ?", site.ID).Exec(context.Background()); err != nil {
tx.Rollback()
return util.Wrap("delete crawled site", err)
}
if err := markDomainSeen(tx, site.Domain); err != nil {
tx.Rollback()
return util.Wrap("mark domain as seen", err)
}
if err := tx.Commit(); err != nil {
tx.Rollback()
return util.Wrap("commit crawl loop transaction", err)
}
jobs <- site
}
return nil
}
type pageMeta struct {
Time time.Time
URL string
}
func (c *CrawlCore) worker(workerID int, jobChan chan *database.Site) {
c.workerWG.Add(1)
log := slog.With("worker", workerID)
for site := range jobChan {
conf := config.Get()
log.Info("run", "domain", site.Domain)
currPageNumber := 0
if site.StartURL == "" {
site.StartURL = "http://" + site.Domain + "/"
}
queuedURLs := map[string]struct{}{
site.StartURL: {},
}
urlQueue := []string{site.StartURL}
otherDomains := make(map[string]string)
pageLoop:
for {
if currPageNumber == conf.MaxPagesPerDomain {
log.Info("hit page number limit", "domain", site.Domain)
break
}
var currentURL string
if len(urlQueue) == 0 {
break
} else {
currentURL = urlQueue[0]
urlQueue = slices.Delete(urlQueue, 0, 1)
}
// Get page
var pageBody string
ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
err := requests.URL(currentURL).ToString(&pageBody).UserAgent(conf.UserAgent).Fetch(ctx)
cancel()
if err != nil {
log.Warn("failed to fetch page", "url", currentURL, "error", err)
break pageLoop
}
// Extract links
doc, err := goquery.NewDocumentFromReader(bytes.NewReader([]byte(pageBody)))
if err != nil {
// TODO: Check that we get HTML back
log.Error("failed to parse page", "error", err, "url", currentURL)
continue pageLoop
}
currentParsedURL, err := url.Parse(currentURL)
if err != nil {
log.Error("unable to parse current page URL", "error", err, "url", currentURL)
continue pageLoop
}
doc.Find("a").Each(func(i int, selection *goquery.Selection) {
href, exists := selection.Attr("href")
if !exists || href == "" {
return
}
thisURL, err := url.Parse(href)
if err != nil {
return
}
if thisURL.Scheme == "" {
thisURL.Scheme = currentParsedURL.Scheme
} else if !(thisURL.Scheme == "http" || thisURL.Scheme == "https") {
return
}
if thisURL.Host == "" {
if thisURL.Path == "" {
// This is either a URL with a fragment or query string
return
}
thisURL.Host = currentParsedURL.Host
if !strings.HasPrefix(thisURL.Path, "/") {
if strings.HasSuffix(currentParsedURL.Path, "/") {
thisURL.Path = currentParsedURL.Path + thisURL.Path
} else {
thisURL.Path = path.Base(currentParsedURL.Path) + "/" + thisURL.Path
}
}
} else {
// TODO: this is potentially fumbling some pages that aren't linked directly within the other website
tx, err := c.DB.Begin()
if err != nil {
log.Error("faild to open transaction", "error", err)
return
}
defer tx.Rollback()
host := strings.ToLower(thisURL.Host)
if _, found := otherDomains[host]; found {
return
}
if beenSeen, err := hasDomainBeenSeen(tx, host); err != nil {
log.Error("failed to lookup domain status", "error", err)
return
} else if beenSeen {
return
}
otherDomains[host] = href
if err := markDomainSeen(tx, host); err != nil {
log.Error("failed to mark domain as seen", "error", err)
return
}
if _, err := tx.NewInsert().Model(&database.Site{
ID: snow.Generate(),
Domain: host,
}).Exec(context.Background()); err != nil {
log.Error("insert new Site record", "error", err)
return
}
if err := tx.Commit(); err != nil {
log.Error("failed to commit cross-domain link checking transaction", "error", err)
return
}
return
}
thisURL.RawQuery = ""
thisURL.Fragment = ""
u := thisURL.String()
if _, found := queuedURLs[u]; !found {
urlQueue = append(urlQueue, u)
queuedURLs[u] = struct{}{}
}
})
// Dump to disk
metaData := &pageMeta{
Time: time.Now(),
URL: currentURL,
}
metaJSON, err := json.Marshal(metaData)
if err != nil {
log.Error("failed to marshal site metadata", "error", err)
break
}
baseFname := path.Join(conf.CrawlDataDir, fmt.Sprintf("%d.%d", site.ID, currPageNumber))
if err := os.WriteFile(baseFname+".html", []byte(pageBody), 0644); err != nil {
log.Error("failed to dump page content", "error", err, "fname", baseFname)
}
if err := os.WriteFile(baseFname+".json", metaJSON, 0644); err != nil {
log.Error("failed to dump page metadata", "error", err, "fname", baseFname)
}
// Go places
currPageNumber += 1
}
}
log.Info("worker stopping")
c.workerWG.Done()
}

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crawl/internal/crawlcore/crawlcore.go Normal file
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package crawlcore
import (
"context"
"git.tdpain.net/codemicro/hn84/crawl/internal/database"
"git.tdpain.net/codemicro/hn84/util"
"github.com/bwmarrin/snowflake"
"github.com/uptrace/bun"
"net/url"
"strings"
"sync"
)
var snow, _ = snowflake.NewNode(1)
type CrawlCore struct {
DB *bun.DB
workerWG sync.WaitGroup
}
func New(db *bun.DB) *CrawlCore {
return &CrawlCore{
DB: db,
}
}
func (c *CrawlCore) AddSite(startURL string) error {
parsedURL, err := url.Parse(startURL)
if err != nil {
return util.Wrap("parse start URL", err)
}
site := &database.Site{
ID: snow.Generate(),
Domain: parsedURL.Host,
StartURL: startURL,
}
if _, err := c.DB.NewInsert().Model(site).Exec(context.Background()); err != nil {
return util.Wrap("insert new Site record", err)
}
return nil
}
func hasDomainBeenSeen(db bun.IDB, domain string) (bool, error) {
domain = strings.ToLower(domain)
n, err := db.NewSelect().Model((*database.SeenDomain)(nil)).Where("domain = ?", domain).Count(context.Background())
if err != nil {
return false, util.Wrap("select seen domains", err)
}
return n >= 1, nil
}
func markDomainSeen(db bun.IDB, domain string) error {
domain = strings.ToLower(domain)
if _, err := db.NewInsert().Model(&database.SeenDomain{
Domain: domain,
}).Ignore().Exec(context.Background()); err != nil {
return util.Wrap("mark domain as seen", err)
}
return nil
}

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crawl/internal/database/db.go Normal file
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package database
import (
"context"
"database/sql"
"errors"
"git.tdpain.net/codemicro/hn84/util"
"github.com/bwmarrin/snowflake"
_ "github.com/mattn/go-sqlite3"
"github.com/uptrace/bun"
"github.com/uptrace/bun/dialect/sqlitedialect"
"os"
)
type Site struct {
bun.BaseModel
ID snowflake.ID `bun:",pk"`
Domain string `bun:",notnull,unique"`
StartURL string
}
type SeenDomain struct {
bun.BaseModel
Domain string `bun:",pk"`
}
func Setup(filepath string) (*bun.DB, error) {
alreadyExists := true
if _, err := os.Stat(filepath); err != nil {
if !errors.Is(err, os.ErrNotExist) {
return nil, err
}
alreadyExists = false
}
db, err := sql.Open("sqlite3", filepath)
if err != nil {
return nil, util.Wrap("open database", err)
}
db.SetMaxOpenConns(1) // https://github.com/mattn/go-sqlite3/issues/274#issuecomment-191597862
b := bun.NewDB(db, sqlitedialect.New())
//b.AddQueryHook(bundebug.NewQueryHook(bundebug.WithVerbose(true)))
if !alreadyExists {
if _, err := b.NewCreateTable().Model((*Site)(nil)).Exec(context.Background()); err != nil {
return nil, util.Wrap("create Site table", err)
}
if _, err := b.NewCreateTable().Model((*SeenDomain)(nil)).Exec(context.Background()); err != nil {
return nil, util.Wrap("create SeenDomain table", err)
}
}
return b, nil
}

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crawl/main.go Normal file
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package main
import (
"errors"
"git.tdpain.net/codemicro/hn84/crawl/internal/config"
"git.tdpain.net/codemicro/hn84/crawl/internal/crawlcore"
"git.tdpain.net/codemicro/hn84/crawl/internal/database"
"git.tdpain.net/codemicro/hn84/util"
"log/slog"
"os"
)
func main() {
if err := run(); err != nil {
slog.Error("unrecoverable runtime error", "error", err)
os.Exit(1)
}
}
func run() error {
db, err := database.Setup(config.Get().DatabaseName)
if err != nil {
return util.Wrap("setup database", err)
}
cc := crawlcore.New(db)
if len(os.Args) < 2 {
return errors.New("too few arguments")
}
op := os.Args[1]
switch op {
case "add":
if len(os.Args) < 3 {
return errors.New("missing start URL")
}
if err := cc.AddSite(os.Args[2]); err != nil {
return util.Wrap("add site", err)
}
case "run":
if err := cc.Loop(nil); err != nil {
return util.Wrap("run crawl loop", err)
}
default:
return errors.New("unrecognised operation")
}
return nil
}

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go.mod Normal file
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module git.tdpain.net/codemicro/hn84
go 1.21.1
require (
git.tdpain.net/pkg/cfger v0.1.0 // indirect
github.com/PuerkitoBio/goquery v1.8.1 // indirect
github.com/andybalholm/cascadia v1.3.1 // indirect
github.com/bwmarrin/snowflake v0.3.0 // indirect
github.com/carlmjohnson/requests v0.23.5 // indirect
github.com/fatih/color v1.15.0 // indirect
github.com/jinzhu/inflection v1.0.0 // indirect
github.com/mattn/go-colorable v0.1.13 // indirect
github.com/mattn/go-isatty v0.0.19 // indirect
github.com/mattn/go-sqlite3 v1.14.17 // indirect
github.com/tmthrgd/go-hex v0.0.0-20190904060850-447a3041c3bc // indirect
github.com/uptrace/bun v1.1.16 // indirect
github.com/uptrace/bun/dialect/sqlitedialect v1.1.16 // indirect
github.com/uptrace/bun/extra/bundebug v1.1.16 // indirect
github.com/vmihailenco/msgpack/v5 v5.3.5 // indirect
github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
golang.org/x/net v0.15.0 // indirect
golang.org/x/sys v0.12.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
)

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go.sum Normal file
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git.tdpain.net/pkg/cfger v0.1.0 h1:Yhs2DaFIdbcSrbyywhsoxrHPevDEEBEKbqJqrUa3eso=
git.tdpain.net/pkg/cfger v0.1.0/go.mod h1:Kq5/hsUnYSYM2BVGFtXMlYEDIsIYiZTz4MUIlqZeX0k=
github.com/PuerkitoBio/goquery v1.8.1 h1:uQxhNlArOIdbrH1tr0UXwdVFgDcZDrZVdcpygAcwmWM=
github.com/PuerkitoBio/goquery v1.8.1/go.mod h1:Q8ICL1kNUJ2sXGoAhPGUdYDJvgQgHzJsnnd3H7Ho5jQ=
github.com/andybalholm/cascadia v1.3.1 h1:nhxRkql1kdYCc8Snf7D5/D3spOX+dBgjA6u8x004T2c=
github.com/andybalholm/cascadia v1.3.1/go.mod h1:R4bJ1UQfqADjvDa4P6HZHLh/3OxWWEqc0Sk8XGwHqvA=
github.com/bwmarrin/snowflake v0.3.0 h1:xm67bEhkKh6ij1790JB83OujPR5CzNe8QuQqAgISZN0=
github.com/bwmarrin/snowflake v0.3.0/go.mod h1:NdZxfVWX+oR6y2K0o6qAYv6gIOP9rjG0/E9WsDpxqwE=
github.com/carlmjohnson/requests v0.23.5 h1:NPANcAofwwSuC6SIMwlgmHry2V3pLrSqRiSBKYbNHHA=
github.com/carlmjohnson/requests v0.23.5/go.mod h1:zG9P28thdRnN61aD7iECFhH5iGGKX2jIjKQD9kqYH+o=
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/fatih/color v1.15.0 h1:kOqh6YHBtK8aywxGerMG2Eq3H6Qgoqeo13Bk2Mv/nBs=
github.com/fatih/color v1.15.0/go.mod h1:0h5ZqXfHYED7Bhv2ZJamyIOUej9KtShiJESRwBDUSsw=
github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
github.com/mattn/go-isatty v0.0.19 h1:JITubQf0MOLdlGRuRq+jtsDlekdYPia9ZFsB8h/APPA=
github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
github.com/mattn/go-sqlite3 v1.14.17 h1:mCRHCLDUBXgpKAqIKsaAaAsrAlbkeomtRFKXh2L6YIM=
github.com/mattn/go-sqlite3 v1.14.17/go.mod h1:2eHXhiwb8IkHr+BDWZGa96P6+rkvnG63S2DGjv9HUNg=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/tmthrgd/go-hex v0.0.0-20190904060850-447a3041c3bc h1:9lRDQMhESg+zvGYmW5DyG0UqvY96Bu5QYsTLvCHdrgo=
github.com/tmthrgd/go-hex v0.0.0-20190904060850-447a3041c3bc/go.mod h1:bciPuU6GHm1iF1pBvUfxfsH0Wmnc2VbpgvbI9ZWuIRs=
github.com/uptrace/bun v1.1.16 h1:cn9cgEMFwcyYRsQLfxCRMUxyK1WaHwOVrR3TvzEFZ/A=
github.com/uptrace/bun v1.1.16/go.mod h1:7HnsMRRvpLFUcquJxp22JO8PsWKpFQO/gNXqqsuGWg8=
github.com/uptrace/bun/dialect/sqlitedialect v1.1.16 h1:gbc9BP/e4sNOB9VBj+Si46dpOz2oktmZPidkda92GYY=
github.com/uptrace/bun/dialect/sqlitedialect v1.1.16/go.mod h1:YNezpK7fIn5Wa2WGmTCZ/nEyiswcXmuT4iNWADeL1x4=
github.com/uptrace/bun/extra/bundebug v1.1.16 h1:SgicRQGtnjhrIhlYOxdkOm1Em4s6HykmT3JblHnoTBM=
github.com/uptrace/bun/extra/bundebug v1.1.16/go.mod h1:SkiOkfUirBiO1Htc4s5bQKEq+JSeU1TkBVpMsPz2ePM=
github.com/vmihailenco/msgpack/v5 v5.3.5 h1:5gO0H1iULLWGhs2H5tbAHIZTV8/cYafcFOr9znI5mJU=
github.com/vmihailenco/msgpack/v5 v5.3.5/go.mod h1:7xyJ9e+0+9SaZT0Wt1RGleJXzli6Q/V5KbhBonMG9jc=
github.com/vmihailenco/tagparser/v2 v2.0.0 h1:y09buUbR+b5aycVFQs/g70pqKVZNBmxwAhO7/IwNM9g=
github.com/vmihailenco/tagparser/v2 v2.0.0/go.mod h1:Wri+At7QHww0WTrCBeu4J6bNtoV6mEfg5OIWRZA9qds=
github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
golang.org/x/net v0.0.0-20210916014120-12bc252f5db8/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
golang.org/x/net v0.7.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
golang.org/x/net v0.15.0 h1:ugBLEUaxABaB5AJqW9enI0ACdci2RUd4eP51NTBvuJ8=
golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/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=

9
util/util.go Normal file
View file

@ -0,0 +1,9 @@
package util
import (
"fmt"
)
func Wrap(label string, err error) error {
return fmt.Errorf("%s: %w", label, err)
}