Use concurrency for path scanning (chainguard-dev#405)

* Use file descriptors Signed-off-by: egibs <[email protected]> * Relocate file descriptor code; implement working concurrency for discovered paths Signed-off-by: egibs <[email protected]> * Move to ordered map; relocate File rendering Signed-off-by: egibs <[email protected]> * Limit concurrency to runtime.NumCPU() Signed-off-by: egibs <[email protected]> * Rename map variables Signed-off-by: egibs <[email protected]> * Directly initialize diff maps Signed-off-by: egibs <[email protected]> * Appease the linter Signed-off-by: egibs <[email protected]> * Configurable concurrency Signed-off-by: egibs <[email protected]> * Update samples_test.go Signed-off-by: egibs <[email protected]> * More consolidation Signed-off-by: egibs <[email protected]> * Add exists check Signed-off-by: egibs <[email protected]> * Use -j instead of -c for concurrency Signed-off-by: egibs <[email protected]> * Use an errgroup instead of a waitgroup + semaphore Signed-off-by: egibs <[email protected]> * Use SetLimit; add concurrency config to all tests; linting fixes Signed-off-by: egibs <[email protected]> * Move sorting code into scan.go; move rendering inside of map construction loop Signed-off-by: egibs <[email protected]> * Use 8-core runner for tests Signed-off-by: egibs <[email protected]> * Go back to ubuntu-latest Signed-off-by: egibs <[email protected]> * Run core tests in parallel Signed-off-by: egibs <[email protected]> * Better alias naming, consolidate structs Signed-off-by: egibs <[email protected]> * Run make fix Signed-off-by: egibs <[email protected]> * Replace mutexes with sync.Map Signed-off-by: egibs <[email protected]> * Remove struct/type Signed-off-by: egibs <[email protected]> * Appease the linter Signed-off-by: egibs <[email protected]> --------- Signed-off-by: egibs <[email protected]> Signed-off-by: Evan Gibler <[email protected]>
egibs · Aug 16, 2024 · 24c0a3b · 24c0a3b
1 parent cb97c60
commit 24c0a3b
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Showing 18 changed files with 219 additions and 184 deletions.
diff --git a/bincapz.go b/bincapz.go
@@ -11,6 +11,7 @@ import (
 	"io/fs"
 	"log/slog"
 	"os"
+	"runtime"
 	"strings"
 
 	"github.com/chainguard-dev/bincapz/pkg/action"
@@ -56,6 +57,7 @@ func parseRisk(s string) int {
 
 func main() {
 	allFlag := flag.Bool("all", false, "Ignore nothing, show all")
+	concurrencyFlag := flag.Int("j", runtime.NumCPU(), "Concurrently scan files within target directories")
 	diffFlag := flag.Bool("diff", false, "Show capability drift between two files")
 	formatFlag := flag.String("format", "terminal", "Output type -- valid values are: json, markdown, simple, terminal, yaml")
 	ignoreSelfFlag := flag.Bool("ignore-self", true, "Ignore the bincapz binary")
@@ -192,6 +194,7 @@ func main() {
 		Stats:                 stats,
 		ErrFirstHit:           *errFirstHitFlag,
 		ErrFirstMiss:          *errFirstMissFlag,
+		Concurrency:           *concurrencyFlag,
 	}
 
 	var res *bincapz.Report

diff --git a/go.mod b/go.mod
@@ -1,6 +1,6 @@
 module github.com/chainguard-dev/bincapz
 
-go 1.23
+go 1.23.0
 
 require (
 	github.com/agext/levenshtein v1.2.3
@@ -12,17 +12,22 @@ require (
 	github.com/liamg/magic v0.0.1
 	github.com/olekukonko/tablewriter v0.0.5
 	github.com/ulikunitz/xz v0.5.12
+	github.com/wk8/go-ordered-map/v2 v2.1.8
+	golang.org/x/sync v0.8.0
 	golang.org/x/term v0.23.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 
 require (
+	github.com/bahlo/generic-list-go v0.2.0 // indirect
+	github.com/buger/jsonparser v1.1.1 // indirect
 	github.com/containerd/stargz-snapshotter/estargz v0.15.1 // indirect
 	github.com/docker/cli v27.1.2+incompatible // indirect
 	github.com/docker/distribution v2.8.3+incompatible // indirect
 	github.com/docker/docker-credential-helpers v0.8.2 // indirect
 	github.com/klauspost/compress v1.17.9 // indirect
 	github.com/kr/pretty v0.2.1 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mattn/go-runewidth v0.0.16 // indirect
@@ -33,6 +38,5 @@ require (
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
 	github.com/vbatts/tar-split v0.11.5 // indirect
-	golang.org/x/sync v0.8.0 // indirect
 	golang.org/x/sys v0.24.0 // indirect
 )
diff --git a/go.sum b/go.sum
@@ -1,16 +1,16 @@
 github.com/agext/levenshtein v1.2.3 h1:YB2fHEn0UJagG8T1rrWknE3ZQzWM06O8AMAatNn7lmo=
 github.com/agext/levenshtein v1.2.3/go.mod h1:JEDfjyjHDjOF/1e4FlBE/PkbqA9OfWu2ki2W0IB5558=
-github.com/chainguard-dev/clog v1.4.0 h1:x0YyEppnUX+dxQAnfGNYdQEKNDSRCAwC08f/1eIxJ9E=
-github.com/chainguard-dev/clog v1.4.0/go.mod h1:cV516KZWqYc/phZsCNwF36u/KMGS+Gj5Uqeb8Hlp95Y=
+github.com/bahlo/generic-list-go v0.2.0 h1:5sz/EEAK+ls5wF+NeqDpk5+iNdMDXrh3z3nPnH1Wvgk=
+github.com/bahlo/generic-list-go v0.2.0/go.mod h1:2KvAjgMlE5NNynlg/5iLrrCCZ2+5xWbdbCW3pNTGyYg=
+github.com/buger/jsonparser v1.1.1 h1:2PnMjfWD7wBILjqQbt530v576A/cAbQvEW9gGIpYMUs=
+github.com/buger/jsonparser v1.1.1/go.mod h1:6RYKKt7H4d4+iWqouImQ9R2FZql3VbhNgx27UK13J/0=
 github.com/chainguard-dev/clog v1.5.0 h1:VFwdxf+4x7+EG8lRO4/tZFP7Hn/NG8OVkVNfgnnsADw=
 github.com/chainguard-dev/clog v1.5.0/go.mod h1:4+WFhRMsGH79etYXY3plYdp+tCz/KCkU8fAr0HoaPvs=
 github.com/containerd/stargz-snapshotter/estargz v0.15.1 h1:eXJjw9RbkLFgioVaTG+G/ZW/0kEe2oEKCdS/ZxIyoCU=
 github.com/containerd/stargz-snapshotter/estargz v0.15.1/go.mod h1:gr2RNwukQ/S9Nv33Lt6UC7xEx58C+LHRdoqbEKjz1Kk=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/docker/cli v27.1.1+incompatible h1:goaZxOqs4QKxznZjjBWKONQci/MywhtRv2oNn0GkeZE=
-github.com/docker/cli v27.1.1+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
 github.com/docker/cli v27.1.2+incompatible h1:nYviRv5Y+YAKx3dFrTvS1ErkyVVunKOhoweCTE1BsnI=
 github.com/docker/cli v27.1.2+incompatible/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
 github.com/docker/distribution v2.8.3+incompatible h1:AtKxIZ36LoNK51+Z6RpzLpddBirtxJnzDrHLEKxTAYk=
@@ -25,6 +25,7 @@ github.com/google/go-containerregistry v0.20.2 h1:B1wPJ1SN/S7pB+ZAimcciVD+r+yV/l
 github.com/google/go-containerregistry v0.20.2/go.mod h1:z38EKdKh4h7IP2gSfUUqEvalZBqs6AoLeWfUy34nQC8=
 github.com/hillu/go-yara/v4 v4.3.3 h1:O+7iYTZK20fzsXiJyvA0d529RTdnZCrgS6HdE0O7BMg=
 github.com/hillu/go-yara/v4 v4.3.3/go.mod h1:AHEs/FXVMQKVVlT6iG9d+q1BRr0gq0WoAWZQaZ0gS7s=
+github.com/josharian/intern v1.0.0/go.mod h1:5DoeVV0s6jJacbCEi61lwdGj/aVlrQvzHFFd8Hwg//Y=
 github.com/klauspost/compress v1.17.9 h1:6KIumPrER1LHsvBVuDa0r5xaG0Es51mhhB9BQB2qeMA=
 github.com/klauspost/compress v1.17.9/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw=
 github.com/kr/pretty v0.2.1 h1:Fmg33tUaq4/8ym9TJN1x7sLJnHVwhP33CNkpYV/7rwI=
@@ -34,14 +35,14 @@ github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/liamg/magic v0.0.1 h1:Ru22ElY+sCh6RvRTWjQzKKCxsEco8hE0co8n1qe7TBM=
 github.com/liamg/magic v0.0.1/go.mod h1:yQkOmZZI52EA+SQ2xyHpVw8fNvTBruF873Y+Vt6S+fk=
+github.com/mailru/easyjson v0.7.7 h1:UGYAvKxe3sBsEDzO8ZeWOSlIQfWFlxbzLZe7hwFURr0=
+github.com/mailru/easyjson v0.7.7/go.mod h1:xzfreul335JAWq5oZzymOObrkdz5UnU4kGfJJLY9Nlc=
 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 v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
-github.com/mattn/go-runewidth v0.0.15 h1:UNAjwbU9l54TA3KzvqLGxwWjHmMgBUVhBiTjelZgg3U=
-github.com/mattn/go-runewidth v0.0.15/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
 github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
@@ -69,15 +70,13 @@ github.com/ulikunitz/xz v0.5.12 h1:37Nm15o69RwBkXM0J6A5OlE67RZTfzUxTj8fB3dfcsc=
 github.com/ulikunitz/xz v0.5.12/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
 github.com/vbatts/tar-split v0.11.5 h1:3bHCTIheBm1qFTcgh9oPu+nNBtX+XJIupG/vacinCts=
 github.com/vbatts/tar-split v0.11.5/go.mod h1:yZbwRsSeGjusneWgA781EKej9HF8vme8okylkAeNKLk=
-golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
-golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+github.com/wk8/go-ordered-map/v2 v2.1.8 h1:5h/BUHu93oj4gIdvHHHGsScSTMijfx5PeYkE/fJgbpc=
+github.com/wk8/go-ordered-map/v2 v2.1.8/go.mod h1:5nJHM5DyteebpVlHnWMV0rPz6Zp7+xBAnxjb1X5vnTw=
 golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
 golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.23.0 h1:YfKFowiIMvtgl1UERQoTPPToxltDeZfbj4H7dVUCwmM=
-golang.org/x/sys v0.23.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/sys v0.24.0 h1:Twjiwq9dn6R1fQcyiK+wQyHWfaz/BJB+YIpzU/Cv3Xg=
 golang.org/x/sys v0.24.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.23.0 h1:F6D4vR+EHoL9/sWAWgAR1H2DcHr4PareCbAaCo1RpuU=

diff --git a/pkg/action/archive_test.go b/pkg/action/archive_test.go
@@ -6,8 +6,7 @@ import (
 	"io/fs"
 	"os"
 	"path/filepath"
-	"sort"
-	"strings"
+	"runtime"
 	"testing"
 
 	"github.com/chainguard-dev/bincapz/pkg/bincapz"
@@ -230,11 +229,12 @@ func TestScanArchive(t *testing.T) {
 		t.Fatalf("render: %v", err)
 	}
 	bc := bincapz.Config{
-		IgnoreSelf: false,
-		IgnoreTags: []string{"harmless"},
-		Renderer:   simple,
-		Rules:      yrs,
-		ScanPaths:  []string{"testdata/apko_nested.tar.gz"},
+		IgnoreSelf:  false,
+		IgnoreTags:  []string{"harmless"},
+		Renderer:    simple,
+		Rules:       yrs,
+		ScanPaths:   []string{"testdata/apko_nested.tar.gz"},
+		Concurrency: runtime.NumCPU(),
 	}
 	res, err := Scan(ctx, bc)
 	if err != nil {
@@ -246,14 +246,7 @@ func TestScanArchive(t *testing.T) {
 
 	outBytes := out.Bytes()
 
-	// Sort the output to ensure consistent ordering
-	sorted := func(input []byte) []byte {
-		lines := strings.Split(string(input), "\n")
-		sort.Strings(lines)
-		return []byte(strings.Join(lines, "\n"))
-	}
-	sortedBytes := sorted(outBytes)
-	got := string(sortedBytes)
+	got := string(outBytes)
 
 	td, err := os.ReadFile("testdata/scan_archive")
 	if err != nil {

diff --git a/pkg/action/diff.go b/pkg/action/diff.go
@@ -14,6 +14,7 @@ import (
 	"github.com/agext/levenshtein"
 	"github.com/chainguard-dev/bincapz/pkg/bincapz"
 	"github.com/chainguard-dev/clog"
+	orderedmap "github.com/wk8/go-ordered-map/v2"
 )
 
 func relFileReport(ctx context.Context, c bincapz.Config, fromPath string) (map[string]*bincapz.FileReport, error) {
@@ -25,15 +26,15 @@ func relFileReport(ctx context.Context, c bincapz.Config, fromPath string) (map[
 		return nil, err
 	}
 	fromRelPath := map[string]*bincapz.FileReport{}
-	for _, f := range fromReport.Files {
-		if f.Skipped != "" || f.Error != "" {
+	for files := fromReport.Files.Oldest(); files != nil; files = files.Next() {
+		if files.Value.Skipped != "" || files.Value.Error != "" {
 			continue
 		}
-		rel, err := filepath.Rel(fromPath, f.Path)
+		rel, err := filepath.Rel(fromPath, files.Value.Path)
 		if err != nil {
-			return nil, fmt.Errorf("rel(%q,%q): %w", fromPath, f.Path, err)
+			return nil, fmt.Errorf("rel(%q,%q): %w", fromPath, files.Value.Path, err)
 		}
-		fromRelPath[rel] = f
+		fromRelPath[rel] = files.Value
 	}
 
 	return fromRelPath, nil
@@ -55,9 +56,9 @@ func Diff(ctx context.Context, c bincapz.Config) (*bincapz.Report, error) {
 	}
 
 	d := &bincapz.DiffReport{
-		Added:    map[string]*bincapz.FileReport{},
-		Removed:  map[string]*bincapz.FileReport{},
-		Modified: map[string]*bincapz.FileReport{},
+		Added:    orderedmap.New[string, *bincapz.FileReport](),
+		Removed:  orderedmap.New[string, *bincapz.FileReport](),
+		Modified: orderedmap.New[string, *bincapz.FileReport](),
 	}
 
 	processSrc(ctx, c, src, dest, d)
@@ -74,7 +75,7 @@ func processSrc(ctx context.Context, c bincapz.Config, src, dest map[string]*bin
 	for relPath, fr := range src {
 		tr, exists := dest[relPath]
 		if !exists {
-			d.Removed[relPath] = fr
+			d.Removed.Set(relPath, fr)
 			continue
 		}
 		handleFile(ctx, c, fr, tr, relPath, d)
@@ -98,7 +99,7 @@ func handleFile(ctx context.Context, c bincapz.Config, fr, tr *bincapz.FileRepor
 		}
 	}
 
-	d.Modified[relPath] = rbs
+	d.Modified.Set(relPath, rbs)
 }
 
 func createFileReport(tr, fr *bincapz.FileReport) *bincapz.FileReport {
@@ -127,7 +128,7 @@ func processDest(ctx context.Context, c bincapz.Config, from, to map[string]*bin
 	for relPath, tr := range to {
 		fr, exists := from[relPath]
 		if !exists {
-			d.Added[relPath] = tr
+			d.Added.Set(relPath, tr)
 			continue
 		}
 
@@ -153,10 +154,13 @@ func fileDestination(ctx context.Context, c bincapz.Config, fr, tr *bincapz.File
 	}
 
 	// are there already modified behaviors for this file?
-	if _, exists := d.Modified[relPath]; !exists {
-		d.Modified[relPath] = abs
+	if _, exists := d.Modified.Get(relPath); !exists {
+		d.Modified.Set(relPath, abs)
 	} else {
-		d.Modified[relPath].Behaviors = append(d.Modified[relPath].Behaviors, abs.Behaviors...)
+		if rel, exists := d.Modified.Get(relPath); exists {
+			rel.Behaviors = append(rel.Behaviors, abs.Behaviors...)
+			d.Modified.Set(relPath, rel)
+		}
 	}
 }
 
@@ -172,20 +176,21 @@ func combineReports(d *bincapz.DiffReport) []diffReports {
 	diffs := make(chan diffReports)
 	var wg sync.WaitGroup
 
-	for rpath, rfr := range d.Removed {
+	for removed := d.Removed.Oldest(); removed != nil; removed = removed.Next() {
 		wg.Add(1)
 		go func(path string, fr *bincapz.FileReport) {
 			defer wg.Done()
-			for apath, afr := range d.Added {
+			for added := d.Added.Oldest(); added != nil; added = added.Next() {
 				diffs <- diffReports{
-					Added:     apath,
-					AddedFR:   afr,
+					Added:     added.Key,
+					AddedFR:   added.Value,
 					Removed:   path,
 					RemovedFR: fr,
 				}
 			}
-		}(rpath, rfr)
+		}(removed.Key, removed.Value)
 	}
+
 	go func() {
 		wg.Wait()
 		close(diffs)
@@ -246,8 +251,8 @@ func fileMove(ctx context.Context, c bincapz.Config, fr, tr *bincapz.FileReport,
 
 	// Move these into the modified list if the files are not completely different (something like ~0.3)
 	if score > 0.3 {
-		d.Modified[apath] = abs
-		delete(d.Removed, rpath)
-		delete(d.Added, apath)
+		d.Modified.Set(apath, abs)
+		d.Modified.Delete(rpath)
+		d.Modified.Delete(apath)
 	}
 }
diff --git a/pkg/action/oci_test.go b/pkg/action/oci_test.go
@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"io/fs"
 	"os"
-	"regexp"
+	"runtime"
 	"testing"
 
 	"github.com/chainguard-dev/bincapz/pkg/bincapz"
@@ -14,21 +14,13 @@ import (
 	thirdparty "github.com/chainguard-dev/bincapz/third_party"
 	"github.com/chainguard-dev/clog"
 	"github.com/chainguard-dev/clog/slogtest"
+	"github.com/google/go-cmp/cmp"
 )
 
-func reduceMarkdown(s string) string {
-	spaceRe := regexp.MustCompile(` +`)
-	dashRe := regexp.MustCompile(` -`)
-
-	s = spaceRe.ReplaceAllString(s, " ")
-	s = dashRe.ReplaceAllString(s, " ")
-	return s
-}
-
 func TestOCI(t *testing.T) {
 	t.Parallel()
 	ctx := slogtest.Context(t)
-	clog.FromContext(ctx).With("test", "scan_archive")
+	clog.FromContext(ctx).With("test", "scan_oci")
 
 	yrs, err := compile.Recursive(ctx, []fs.FS{rules.FS, thirdparty.FS})
 	if err != nil {
@@ -42,12 +34,13 @@ func TestOCI(t *testing.T) {
 	}
 
 	bc := bincapz.Config{
-		IgnoreSelf: false,
-		IgnoreTags: []string{"harmless"},
-		Renderer:   simple,
-		Rules:      yrs,
-		ScanPaths:  []string{"cgr.dev/chainguard/static"},
-		OCI:        true,
+		IgnoreSelf:  false,
+		IgnoreTags:  []string{"harmless"},
+		Renderer:    simple,
+		Rules:       yrs,
+		ScanPaths:   []string{"cgr.dev/chainguard/static"},
+		OCI:         true,
+		Concurrency: runtime.NumCPU(),
 	}
 	res, err := Scan(ctx, bc)
 	if err != nil {
@@ -57,14 +50,15 @@ func TestOCI(t *testing.T) {
 		t.Fatalf("full: %v", err)
 	}
 
-	got := reduceMarkdown(out.String())
+	got := out.String()
 
 	td, err := os.ReadFile("testdata/scan_oci")
 	if err != nil {
 		t.Fatalf("testdata read failed: %v", err)
 	}
-	want := reduceMarkdown(string(td))
-	if got != want {
-		t.Fatalf("got %q, want %q", got, want)
+	// Sort the loaded contents to ensure consistent ordering
+	want := string(td)
+	if diff := cmp.Diff(want, got); diff != "" {
+		t.Errorf("Simple output mismatch: (-want +got):\n%s", diff)
 	}
 }
diff --git a/pkg/action/programkind.go b/pkg/action/programkind.go
@@ -80,7 +80,7 @@ func programKind(ctx context.Context, path string) string {
 	headerString := ""
 	n, err := io.ReadFull(f, header[:])
 	if err == nil || errors.Is(err, io.ErrUnexpectedEOF) {
-		kind, err := magic.Lookup(header[:n])
+		kind, err := magic.LookupSync(header[:n])
 		if err == nil {
 			desc = kind.Description
 		}