Merge pull request #25 from anchore/add-logging-and-app-config

Add logging and app configuration

cmd/cli.go

@@ -0,0 +1,50 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/anchore/imgbom/imgbom/presenter"
+	"github.com/anchore/imgbom/imgbom/scope"
+	"github.com/anchore/imgbom/internal/config"
+	"github.com/spf13/viper"
+)
+
+var cliOpts = config.CliOnlyOptions{}
+
+func setCliOptions() {
+	rootCmd.PersistentFlags().StringVarP(&cliOpts.ConfigPath, "config", "c", "", "application config file")
+
+	// scan options
+	flag := "scope"
+	rootCmd.Flags().StringP(
+		"scope", "s", scope.AllLayersScope.String(),
+		fmt.Sprintf("selection of layers to analyze, options=%v", scope.Options))
+	if err := viper.BindPFlag(flag, rootCmd.Flags().Lookup(flag)); err != nil {
+		fmt.Printf("unable to bind flag '%s': %+v", flag, err)
+		os.Exit(1)
+	}
+
+	// output & formatting options
+	flag = "output"
+	rootCmd.Flags().StringP(
+		flag, "o", presenter.JSONPresenter.String(),
+		fmt.Sprintf("report output formatter, options=%v", presenter.Options),
+	)
+	if err := viper.BindPFlag(flag, rootCmd.Flags().Lookup(flag)); err != nil {
+		fmt.Printf("unable to bind flag '%s': %+v", flag, err)
+		os.Exit(1)
+	}
+
+	flag = "quiet"
+	rootCmd.Flags().BoolP(
+		flag, "q", false,
+		"suppress all logging output",
+	)
+	if err := viper.BindPFlag(flag, rootCmd.Flags().Lookup(flag)); err != nil {
+		fmt.Printf("unable to bind flag '%s': %+v", flag, err)
+		os.Exit(1)
+	}
+
+	rootCmd.Flags().CountVarP(&cliOpts.Verbosity, "verbose", "v", "increase verbosity (-v = info, -vv = debug)")
+}

cmd/init.go

@@ -0,0 +1,52 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/anchore/imgbom/imgbom"
+	"github.com/anchore/imgbom/internal/config"
+	"github.com/anchore/imgbom/internal/format"
+	"github.com/anchore/imgbom/internal/logger"
+	"github.com/anchore/stereoscope"
+	"github.com/spf13/viper"
+	"go.uber.org/zap"
+	"gopkg.in/yaml.v2"
+)
+
+var appConfig *config.Application
+var log *zap.SugaredLogger
+
+func initAppConfig() {
+	cfg, err := config.LoadConfigFromFile(viper.GetViper(), &cliOpts)
+	if err != nil {
+		fmt.Printf("failed to load application config: \n\t%+v\n", err)
+		os.Exit(1)
+	}
+	appConfig = cfg
+}
+
+func initLogging() {
+	config := logger.LogConfig{
+		EnableConsole: (appConfig.Log.FileLocation == "" || appConfig.CliOptions.Verbosity > 0) && !appConfig.Quiet,
+		EnableFile:    appConfig.Log.FileLocation != "",
+		Level:         appConfig.Log.LevelOpt,
+		Structured:    appConfig.Log.Structured,
+		FileLocation:  appConfig.Log.FileLocation,
+	}
+
+	logWrapper := logger.NewZapLogger(config)
+	log = logWrapper.Logger
+	imgbom.SetLogger(logWrapper)
+	stereoscope.SetLogger(logWrapper)
+}
+
+func logAppConfig() {
+	appCfgStr, err := yaml.Marshal(&appConfig)
+
+	if err != nil {
+		log.Debugf("Could not display application config: %+v", err)
+	} else {
+		log.Debugf("Application config:\n%+v", format.Magenta.Format(string(appCfgStr)))
+	}
+}

cmd/root.go

@@ -6,22 +6,13 @@ import (
 
 	"github.com/anchore/imgbom/imgbom"
 	"github.com/anchore/imgbom/imgbom/presenter"
-	"github.com/anchore/imgbom/imgbom/scope"
 	"github.com/anchore/imgbom/internal"
 	"github.com/anchore/stereoscope"
 	"github.com/spf13/cobra"
 )
 
-const ApplicationName = "imgbom"
-
-var rootOptions struct {
-	cfgFile string
-	scope   string
-	output  string
-}
-
 var rootCmd = &cobra.Command{
-	Use:   fmt.Sprintf("%s [IMAGE]", ApplicationName),
+	Use:   fmt.Sprintf("%s [IMAGE]", internal.ApplicationName),
 	Short: "A container image BOM tool", // TODO: add copy
 	Long: internal.Tprintf(`\
 Supports the following image sources:
@@ -29,66 +20,53 @@ Supports the following image sources:
     {{.appName}} docker://yourrepo/yourimage:tag    explicitly use the docker daemon
     {{.appName}} tar://path/to/yourimage.tar        use a tarball from disk
 `, map[string]interface{}{
-		"appName": ApplicationName,
+		"appName": internal.ApplicationName,
 	}),
 	Args: cobra.MaximumNArgs(1),
-	Run:  doRunCmd,
+	Run:  runCmdWrapper,
+}
+
+func init() {
+	setCliOptions()
+
+	cobra.OnInitialize(initAppConfig)
+	cobra.OnInitialize(initLogging)
+	cobra.OnInitialize(logAppConfig)
 }
 
 func Execute() {
 	if err := rootCmd.Execute(); err != nil {
-		fmt.Println(err)
+		log.Errorf("could not start application: %w", err)
 		os.Exit(1)
 	}
 }
 
-func init() {
+func runCmdWrapper(cmd *cobra.Command, args []string) {
-	cobra.OnInitialize(loadApplicationConfig)
+	os.Exit(doRunCmd(cmd, args))
-	// TODO: add config support
-	//rootCmd.PersistentFlags().StringVarP(&rootOptions.cfgFile, "config", "c", "", "config file")
-
-	// scan options
-	rootCmd.Flags().StringVarP(&rootOptions.scope, "scope", "s", scope.AllLayersScope.String(),
-		fmt.Sprintf("selection of layers to analyze, options=%v", scope.Options))
-
-	// output & formatting options
-	rootCmd.Flags().StringVarP(&rootOptions.output, "output", "o", presenter.JSONOption.String(),
-		fmt.Sprintf("report output formatter, options=%v", presenter.Options))
 }
 
-func loadApplicationConfig() {
+func doRunCmd(cmd *cobra.Command, args []string) int {
-	// TODO: add config support
+	userImageStr := args[0]
-}
+	log.Infof("Fetching image '%s'", userImageStr)
-
+	img, err := stereoscope.GetImage(userImageStr)
-func doRunCmd(cmd *cobra.Command, args []string) {
-	var pres = presenter.GetPresenter(rootOptions.output)
-	if pres == nil {
-		// TODO: replace with log and exit
-		panic("could not determine presenter")
-	}
-
-	scopeOption := scope.ParseOption(rootOptions.scope)
-	if scopeOption == scope.UnknownScope {
-		// TODO: replace with log and exit
-		panic(scopeOption)
-	}
-
-	img, err := stereoscope.GetImage(args[0])
 	if err != nil {
-		// TODO: replace with log and exit
+		log.Errorf("could not fetch image '%s': %w", userImageStr, err)
-		panic(err)
+		return 1
 	}
 	defer stereoscope.Cleanup()
 
-	catalog, err := imgbom.CatalogImage(img, scopeOption)
+	log.Info("Cataloging image")
+	catalog, err := imgbom.CatalogImage(img, appConfig.ScopeOpt)
 	if err != nil {
-		// TODO: replace with log and exit
+		log.Errorf("could not catalog image: %w", err)
-		panic(err)
+		return 1
 	}
 
-	err = pres.Present(os.Stdout, img, catalog)
+	log.Info("Complete!")
+	err = presenter.GetPresenter(appConfig.PresenterOpt).Present(os.Stdout, img, catalog)
 	if err != nil {
-		// TODO: replace with log and exit
+		log.Errorf("could not format catalog results: %w", err)
-		panic(err)
+		return 1
 	}
+	return 0
 }

cmd/version.go

@@ -3,6 +3,7 @@ package cmd
 import (
 	"fmt"
 
+	"github.com/anchore/imgbom/internal"
 	"github.com/spf13/cobra"
 )
 
@@ -29,5 +30,5 @@ func SetVersion(v *Version) {
 }
 
 func printVersion(cmd *cobra.Command, args []string) {
-	fmt.Printf("%s %s\n", ApplicationName, version.Version)
+	fmt.Printf("%s %s\n", internal.ApplicationName, version.Version)
 }

go.mod

@@ -3,11 +3,19 @@ module github.com/anchore/imgbom
 go 1.14
 
 require (
+	github.com/adrg/xdg v0.2.1
 	github.com/anchore/go-testutils v0.0.0-20200520222037-edc2bf1864fe
-	github.com/anchore/stereoscope v0.0.0-20200520221116-025e07f1c93e
+	github.com/anchore/stereoscope v0.0.0-20200523232006-be5f3c18958f
 	github.com/go-test/deep v1.0.6
+	github.com/google/go-containerregistry v0.0.0-20200521151920-a873a21aff23 // indirect
 	github.com/hashicorp/go-multierror v1.1.0
-	github.com/mitchellh/mapstructure v1.3.0
+	github.com/mitchellh/go-homedir v1.1.0
+	github.com/mitchellh/mapstructure v1.3.1
 	github.com/sergi/go-diff v1.1.0
 	github.com/spf13/cobra v1.0.0
+	github.com/spf13/viper v1.7.0
+	go.uber.org/zap v1.15.0
+	golang.org/x/sys v0.0.0-20200523222454-059865788121 // indirect
+	google.golang.org/genproto v0.0.0-20200521103424-e9a78aa275b7 // indirect
+	gopkg.in/yaml.v2 v2.3.0
 )

go.sum

@@ -2,6 +2,16 @@ bazil.org/fuse v0.0.0-20160811212531-371fbbdaa898/go.mod h1:Xbm+BRKSBEpa4q4hTSxo
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/firestore v1.1.0/go.mod h1:ulACoGHTpvq5r8rxGJ4ddJZBZqakUQqClKRT5SZwBmk=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
+dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/Azure/azure-sdk-for-go v35.0.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
 github.com/Azure/azure-sdk-for-go v38.0.0+incompatible/go.mod h1:9XXNKU+eRnpl9moKnB4QOLf1HestfXbmab5FXxiDBjc=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
@@ -21,6 +31,7 @@ github.com/Azure/go-autorest/autorest/to v0.3.0/go.mod h1:MgwOyqaIuKdG4TL/2ywSsI
 github.com/Azure/go-autorest/autorest/validation v0.1.0/go.mod h1:Ha3z/SqBeaalWQvokg3NZAlQTalVMtOIAs1aGK7G6u8=
 github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc=
 github.com/Azure/go-autorest/tracing v0.5.0/go.mod h1:r/s2XiOKccPW3HrqB+W0TQzfbtp2fGCgRFtBroKn4Dk=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 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/GoogleCloudPlatform/k8s-cloud-provider v0.0.0-20190822182118-27a4ced34534/go.mod h1:iroGtC8B3tQiqtds1l+mgk/BBOrxbqjH+eUfFQYRc14=
@@ -35,18 +46,26 @@ github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbt
 github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
 github.com/PuerkitoBio/urlesc v0.0.0-20160726150825-5bd2802263f2/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
+github.com/adrg/xdg v0.2.1 h1:VSVdnH7cQ7V+B33qSJHTCRlNgra1607Q8PzEmnvb2Ic=
+github.com/adrg/xdg v0.2.1/go.mod h1:ZuOshBmzV4Ta+s23hdfFZnBsdzmoR3US0d7ErpqSbTQ=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/anchore/go-testutils v0.0.0-20200520222037-edc2bf1864fe h1:YMXe4RA3qy4Ri5fmGQii/Gn+Pxv3oBfiS/LqzeOVuwo=
 github.com/anchore/go-testutils v0.0.0-20200520222037-edc2bf1864fe/go.mod h1:D3rc2L/q4Hcp9eeX6AIJH4Q+kPjOtJCFhG9za90j+nU=
 github.com/anchore/stereoscope v0.0.0-20200520221116-025e07f1c93e h1:QBwtrM0MXi0z+GcHk3RoSyzaQ+CLgas0bC/uOd1P+PQ=
 github.com/anchore/stereoscope v0.0.0-20200520221116-025e07f1c93e/go.mod h1:bkyLl5VITnrmgErv4S1vDfVz/TGAZ5il6161IQo7w2g=
+github.com/anchore/stereoscope v0.0.0-20200523232006-be5f3c18958f h1:aPJQyXi8Y7PhnzhUszZfS/23TA5o29UCc3XGreflaqo=
+github.com/anchore/stereoscope v0.0.0-20200523232006-be5f3c18958f/go.mod h1:bkyLl5VITnrmgErv4S1vDfVz/TGAZ5il6161IQo7w2g=
+github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
+github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
 github.com/aws/aws-sdk-go v1.16.26/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/aws/aws-sdk-go v1.27.1/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
+github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
 github.com/blang/semver v3.5.0+incompatible/go.mod h1:kRBLl5iJ+tD4TcOOxsy/0fnwebNt5EWlYSAyrTnjyyk=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
@@ -68,6 +87,7 @@ github.com/containerd/ttrpc v0.0.0-20190828154514-0e0f228740de/go.mod h1:PvCDdDG
 github.com/containerd/typeurl v0.0.0-20180627222232-a93fcdb778cd/go.mod h1:Cm3kwCdlkCfMSHURc+r6fwoGH6/F1hH3S4sg0rLFWPc=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
+github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-oidc v2.1.0+incompatible/go.mod h1:CgnwVTmzoESiwO9qyAFEMiHoZ1nMCKZlZ9V6mm3/LKc=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
@@ -113,11 +133,13 @@ github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.m
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/evanphx/json-patch v4.2.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
+github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
@@ -147,6 +169,7 @@ github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903/go.mod h1:cIg4er
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
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@@ -170,35 +193,59 @@ github.com/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
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@@ -211,6 +258,8 @@ github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCV
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@@ -228,21 +277,35 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
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@@ -287,6 +351,7 @@ github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINE
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@@ -304,11 +369,14 @@ github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsT
 github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
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@@ -320,6 +388,10 @@ github.com/sirupsen/logrus v1.5.0 h1:1N5EYkVAPEywqZRJd7cwnRtCb6xJx7NH3T3WUTF980Q
 github.com/sirupsen/logrus v1.5.0/go.mod h1:+F7Ogzej0PZc/94MaYx/nvG9jOFMD2osvC3s+Squfpo=
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@@ -343,7 +415,10 @@ github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnIn
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@@ -353,6 +428,8 @@ github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UV
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
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@@ -369,35 +446,62 @@ go.etcd.io/etcd v0.0.0-20191023171146-3cf2f69b5738/go.mod h1:dnLIgRNXwCJa5e+c6mI
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
 go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
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@@ -406,6 +510,7 @@ golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn
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@@ -427,9 +532,11 @@ golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJ
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 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/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 v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -441,7 +548,9 @@ golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7w
 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 v0.0.0-20190514135907-3a4b5fb9f71f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190616124812-15dcb6c0061f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190626221950-04f50cda93cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190826190057-c7b8b68b1456/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -450,6 +559,8 @@ golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20200501145240-bc7a7d42d5c3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200519105757-fe76b779f299 h1:DYfZAGf2WMFjMxbgTjaC+2HC7NkNAQs+6Q8b9WEB/F4=
 golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200523222454-059865788121 h1:rITEj+UZHYC927n8GT97eC3zrpzXdb/voyeOuVKS46o=
+golang.org/x/sys v0.0.0-20200523222454-059865788121/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.0.0-20160726164857-2910a502d2bf/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -469,11 +580,22 @@ golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190506145303-2d16b83fe98c/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
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 golang.org/x/tools v0.0.0-20190614205625-5aca471b1d59/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
+golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
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 golang.org/x/tools v0.0.0-20190706070813-72ffa07ba3db/go.mod h1:jcCCGcm9btYwXyDqrUWc6MKQKKGJCWEQ3AfLSRIbEuI=
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 golang.org/x/tools v0.0.0-20190920225731-5eefd052ad72/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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+golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200210192313-1ace956b0e17 h1:a/Fd23DJvg1CaeDH0dYHahE+hCI0v9rFgxSNIThoUcM=
 golang.org/x/tools v0.0.0-20200210192313-1ace956b0e17/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -485,22 +607,33 @@ gonum.org/v1/netlib v0.0.0-20190313105609-8cb42192e0e0/go.mod h1:wa6Ws7BG/ESfp6d
 gonum.org/v1/netlib v0.0.0-20190331212654-76723241ea4e/go.mod h1:kS+toOQn6AQKjmKJ7gzohV1XkqsFehRA2FbsbkopSuQ=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.6.1-0.20190607001116-5213b8090861/go.mod h1:btoxGiFvQNVUZQ8W08zLtrVS08CNpINPEfxXxgJL1Q4=
+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=
+google.golang.org/api v0.9.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
+google.golang.org/api v0.13.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI=
 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=
+google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
 google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
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 google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
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 google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84 h1:pSLkPbrjnPyLDYUO2VM9mDLqo2V6CFBY84lFSZAfoi4=
 google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
 google.golang.org/genproto v0.0.0-20200519141106-08726f379972 h1:6ydLqG65DIMNJf6p97WudGsmd1w3Ickm/LiZnBrREPI=
 google.golang.org/genproto v0.0.0-20200519141106-08726f379972/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
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 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 v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
+google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.23.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.24.0/go.mod h1:XDChyiUovWa60DnaeDeZmSW86xtLtjtZbwvSiRnRtcA=
@@ -525,10 +658,13 @@ gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
+gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
 gopkg.in/gcfg.v1 v1.2.0/go.mod h1:yesOnuUOFQAhST5vPY4nbZsb/huCgGGXlipJsBn0b3o=
 gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo=
 gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
+gopkg.in/ini.v1 v1.51.0 h1:AQvPpx3LzTDM0AjnIRlVFwFFGC+npRopjZxLJj6gdno=
+gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
 gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k=
 gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
 gopkg.in/square/go-jose.v2 v2.2.2/go.mod h1:M9dMgbHiYLoDGQrXy7OpJDJWiKiU//h+vD76mk0e1AI=
@@ -541,12 +677,16 @@ gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
+gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
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 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 k8s.io/api v0.17.4/go.mod h1:5qxx6vjmwUVG2nHQTKGlLts8Tbok8PzHl4vHtVFuZCA=
 k8s.io/apimachinery v0.17.4/go.mod h1:gxLnyZcGNdZTCLnq3fgzyg2A5BVCHTNDFrw8AmuJ+0g=
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@@ -568,6 +708,7 @@ modernc.org/golex v1.0.0/go.mod h1:b/QX9oBD/LhixY6NDh+IdGv17hgB+51fET1i2kPSmvk=
 modernc.org/mathutil v1.0.0/go.mod h1:wU0vUrJsVWBZ4P6e7xtFJEhFSNsfRLJ8H458uRjg03k=
 modernc.org/strutil v1.0.0/go.mod h1:lstksw84oURvj9y3tn8lGvRxyRC1S2+g5uuIzNfIOBs=
 modernc.org/xc v1.0.0/go.mod h1:mRNCo0bvLjGhHO9WsyuKVU4q0ceiDDDoEeWDJHrNx8I=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 sigs.k8s.io/structured-merge-diff v0.0.0-20190525122527-15d366b2352e/go.mod h1:wWxsB5ozmmv/SG7nM11ayaAW51xMvak/t1r0CSlcokI=
 sigs.k8s.io/structured-merge-diff v1.0.1-0.20191108220359-b1b620dd3f06/go.mod h1:/ULNhyfzRopfcjskuui0cTITekDduZ7ycKN3oUT9R18=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=

imgbom/analyzer/analyzer.go

@@ -7,6 +7,7 @@ import (
 )
 
 type Analyzer interface {
+	Name() string
 	// TODO: add ID / Name for analyze for uniquely identifying this analyzer type
 	SelectFiles([]*tree.FileTree) []file.Reference
 	// NOTE: one of the errors which is returned is "IterationNeeded", which indicates to the driver to

imgbom/analyzer/controller.go

@@ -4,6 +4,7 @@ import (
 	"github.com/anchore/imgbom/imgbom/analyzer/dpkg"
 	"github.com/anchore/imgbom/imgbom/pkg"
 	"github.com/anchore/imgbom/imgbom/scope"
+	"github.com/anchore/imgbom/internal/log"
 	"github.com/anchore/stereoscope/pkg/file"
 	"github.com/hashicorp/go-multierror"
 )
@@ -26,6 +27,7 @@ type controller struct {
 }
 
 func (c *controller) add(a Analyzer) {
+	log.Debugf("adding analyzer: %s", a.Name())
 	c.analyzers = append(c.analyzers, a)
 }
 
@@ -36,6 +38,7 @@ func (c *controller) analyze(s scope.Scope) (pkg.Catalog, error) {
 	// ask analyzers for files to extract from the image tar
 	for _, a := range c.analyzers {
 		fileSelection = append(fileSelection, a.SelectFiles(s.Trees)...)
+		log.Debugf("analyzer '%s' selected '%d' files", a.Name(), len(fileSelection))
 	}
 
 	// fetch contents for requested selection by analyzers
@@ -47,11 +50,15 @@ func (c *controller) analyze(s scope.Scope) (pkg.Catalog, error) {
 	// perform analysis, accumulating errors for each failed analysis
 	var errs error
 	for _, a := range c.analyzers {
-		packages, err := a.Analyze(contents)
 		// TODO: check for multiple rounds of analyses by Iterate error
+		packages, err := a.Analyze(contents)
 		if err != nil {
 			errs = multierror.Append(errs, err)
+			continue
 		}
+
+		log.Debugf("analyzer '%s' discovered '%d' packages", a.Name(), len(packages))
+
 		for _, p := range packages {
 			catalog.Add(p)
 		}

imgbom/analyzer/dpkg/analyzer.go

@@ -4,6 +4,7 @@ import (
 	"strings"
 
 	"github.com/anchore/imgbom/imgbom/pkg"
+	"github.com/anchore/imgbom/internal/log"
 	"github.com/anchore/stereoscope/pkg/file"
 	"github.com/anchore/stereoscope/pkg/tree"
 )
@@ -16,6 +17,10 @@ func NewAnalyzer() *Analyzer {
 	return &Analyzer{}
 }
 
+func (a *Analyzer) Name() string {
+	return "dpkg-analyzer"
+}
+
 func (a *Analyzer) SelectFiles(trees []*tree.FileTree) []file.Reference {
 	files := make([]file.Reference, 0)
 	for _, tree := range trees {
@@ -36,14 +41,18 @@ func (a *Analyzer) Analyze(contents map[file.Reference]string) ([]pkg.Package, e
 	for _, reference := range a.selectedFiles {
 		content, ok := contents[reference]
 		if !ok {
-			// TODO: this needs handling
+			// TODO: test case
-			panic(reference)
+			log.Errorf("analyzer '%s' file content missing: %+v", a.Name(), reference)
+
+			continue
 		}
 
 		entries, err := ParseEntries(strings.NewReader(content))
 		if err != nil {
-			// TODO: punt for now, we need to handle this
+			// TODO: test case
-			panic(err)
+			log.Errorf("analyzer failed to parse entries (reference=%+v): %w", reference, err)
+
+			continue
 		}
 		for _, entry := range entries {
 			packages = append(packages, pkg.Package{
@@ -55,5 +64,6 @@ func (a *Analyzer) Analyze(contents map[file.Reference]string) ([]pkg.Package, e
 			})
 		}
 	}
+
 	return packages, nil
 }

imgbom/analyzer/dpkg/parser_test.go

@@ -54,7 +54,7 @@ func TestSinglePackage(t *testing.T) {
 			defer func() {
 				err := file.Close()
 				if err != nil {
-					panic(err)
+					t.Fatal("closing file failed:", err)
 				}
 			}()
 
@@ -123,7 +123,7 @@ func TestMultiplePackages(t *testing.T) {
 			defer func() {
 				err := file.Close()
 				if err != nil {
-					panic(err)
+					t.Fatal("closing file failed:", err)
 				}
 			}()
 

imgbom/constants.go

@@ -0,0 +1,4 @@
+package imgbom
+
+// note: must be a single word, all lowercase
+const LibraryName = "imgbom"

imgbom/log.go

@@ -0,0 +1,10 @@
+package imgbom
+
+import (
+	"github.com/anchore/imgbom/imgbom/logger"
+	"github.com/anchore/imgbom/internal/log"
+)
+
+func SetLogger(logger logger.Logger) {
+	log.Log = logger
+}

imgbom/logger/logger.go

@@ -0,0 +1,9 @@
+package logger
+
+type Logger interface {
+	Errorf(format string, args ...interface{})
+	Infof(format string, args ...interface{})
+	Info(args ...interface{})
+	Debugf(format string, args ...interface{})
+	Debug(args ...interface{})
+}

imgbom/presenter/json/presenter.go

@@ -5,6 +5,7 @@ import (
 	"io"
 
 	"github.com/anchore/imgbom/imgbom/pkg"
+	"github.com/anchore/imgbom/internal/log"
 	stereoscopeImg "github.com/anchore/stereoscope/pkg/image"
 )
 
@@ -88,8 +89,8 @@ func (pres *Presenter) Present(output io.Writer, img *stereoscopeImg.Image, cata
 		for idx, src := range p.Source {
 			fileMetadata, err := img.FileCatalog.Get(src)
 			if err != nil {
-				// TODO: replace
+				// TODO: test case
-				panic(err)
+				log.Errorf("could not get metadata from catalog (presenter=json): %+v", src)
 			}
 
 			srcObj := source{
@@ -105,8 +106,7 @@ func (pres *Presenter) Present(output io.Writer, img *stereoscopeImg.Image, cata
 
 	bytes, err := json.Marshal(&doc)
 	if err != nil {
-		// TODO: replace
+		log.Errorf("failed to marshal json (presenter=json): %w", err)
-		panic(err)
 	}
 
 	_, err = output.Write(bytes)

imgbom/presenter/option.go

@@ -1,23 +1,34 @@
 package presenter
 
+import "strings"
+
 const (
-	UnknownPresenterOption Option = iota
+	UnknownPresenter Option = iota
-	JSONOption
+	JSONPresenter
 )
 
 var optionStr = []string{
-	"UnknownPresenterOption",
+	"UnknownPresenter",
 	"json",
 }
 
 var Options = []Option{
-	JSONOption,
+	JSONPresenter,
 }
 
-type Option int
+type Option uint
+
+func ParseOption(userStr string) Option {
+	switch strings.ToLower(userStr) {
+	case strings.ToLower(JSONPresenter.String()):
+		return JSONPresenter
+	default:
+		return UnknownPresenter
+	}
+}
 
 func (o Option) String() string {
-	if int(o) >= len(optionStr) || int(o) < 0 {
+	if int(o) >= len(optionStr) {
 		return optionStr[0]
 	}
 

imgbom/presenter/presenter.go

@@ -2,7 +2,6 @@ package presenter
 
 import (
 	"io"
-	"strings"
 
 	"github.com/anchore/imgbom/imgbom/pkg"
 	"github.com/anchore/imgbom/imgbom/presenter/json"
@@ -13,9 +12,9 @@ type Presenter interface {
 	Present(io.Writer, *image.Image, pkg.Catalog) error
 }
 
-func GetPresenter(userStr string) Presenter {
+func GetPresenter(option Option) Presenter {
-	switch strings.ToLower(userStr) {
+	switch option {
-	case JSONOption.String():
+	case JSONPresenter:
 		return json.NewPresenter()
 	default:
 		return nil

imgbom/scope/option.go

@@ -8,7 +8,7 @@ const (
 	AllLayersScope
 )
 
-type Option int
+type Option uint
 
 var optionStr = []string{
 	"UnknownScope",
@@ -32,7 +32,7 @@ func ParseOption(userStr string) Option {
 }
 
 func (o Option) String() string {
-	if int(o) >= len(optionStr) || int(o) < 0 {
+	if int(o) >= len(optionStr) {
 		return optionStr[0]
 	}
 

internal/config/config.go

@@ -0,0 +1,173 @@
+package config
+
+import (
+	"fmt"
+	"path"
+	"strings"
+
+	"github.com/adrg/xdg"
+	"github.com/anchore/imgbom/imgbom/presenter"
+	"github.com/anchore/imgbom/imgbom/scope"
+	"github.com/anchore/imgbom/internal"
+	"github.com/mitchellh/go-homedir"
+	"github.com/spf13/viper"
+	"go.uber.org/zap/zapcore"
+)
+
+type CliOnlyOptions struct {
+	ConfigPath string
+	Verbosity  int
+}
+
+type Application struct {
+	ConfigPath   string
+	PresenterOpt presenter.Option
+	Output       string `mapstructure:"output"`
+	ScopeOpt     scope.Option
+	Scope        string  `mapstructure:"scope"`
+	Quiet        bool    `mapstructure:"quiet"`
+	Log          Logging `mapstructure:"log"`
+	CliOptions   CliOnlyOptions
+}
+
+type Logging struct {
+	Structured   bool `mapstructure:"structured"`
+	LevelOpt     zapcore.Level
+	Level        string `mapstructure:"level"`
+	FileLocation string `mapstructure:"file"`
+}
+
+func setNonCliDefaultValues(v *viper.Viper) {
+	v.SetDefault("log.level", "")
+	v.SetDefault("log.file", "")
+	v.SetDefault("log.structured", false)
+}
+
+func LoadConfigFromFile(v *viper.Viper, cliOpts *CliOnlyOptions) (*Application, error) {
+	// the user may not have a config, and this is OK, we can use the default config + default cobra cli values instead
+	setNonCliDefaultValues(v)
+	if cliOpts != nil {
+		_ = readConfig(v, cliOpts.ConfigPath)
+	} else {
+		_ = readConfig(v, "")
+	}
+
+	config := &Application{
+		CliOptions: *cliOpts,
+	}
+	err := v.Unmarshal(config)
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse config: %w", err)
+	}
+	config.ConfigPath = v.ConfigFileUsed()
+
+	err = config.Build()
+	if err != nil {
+		return nil, fmt.Errorf("invalid config: %w", err)
+	}
+
+	return config, nil
+}
+
+func (cfg *Application) Build() error {
+	// set the presenter
+	presenterOption := presenter.ParseOption(cfg.Output)
+	if presenterOption == presenter.UnknownPresenter {
+		return fmt.Errorf("bad --output value '%s'", cfg.Output)
+	}
+	cfg.PresenterOpt = presenterOption
+
+	// set the scope
+	scopeOption := scope.ParseOption(cfg.Scope)
+	if scopeOption == scope.UnknownScope {
+		return fmt.Errorf("bad --scope value '%s'", cfg.Scope)
+	}
+	cfg.ScopeOpt = scopeOption
+
+	if cfg.Quiet {
+		// TODO: this is bad: quiet option trumps all other logging options
+		// we should be able to quiet the consol logging and leave file logging alone...
+		// ... this will be an enhancement for later
+		cfg.Log.LevelOpt = zapcore.PanicLevel
+	} else {
+		if cfg.Log.Level != "" {
+			if cfg.CliOptions.Verbosity > 0 {
+				return fmt.Errorf("cannot explicitly set log level (cfg file or env var) and use -v flag together")
+			}
+
+			// set the log level explicitly
+			err := cfg.Log.LevelOpt.Set(cfg.Log.Level)
+			if err != nil {
+				return fmt.Errorf("bad log level value '%s': %+v", cfg.Log.Level, err)
+			}
+		} else {
+			// set the log level implicitly
+			switch v := cfg.CliOptions.Verbosity; {
+			case v == 1:
+				cfg.Log.LevelOpt = zapcore.InfoLevel
+			case v >= 2:
+				cfg.Log.LevelOpt = zapcore.DebugLevel
+			default:
+				cfg.Log.LevelOpt = zapcore.ErrorLevel
+			}
+		}
+	}
+
+	return nil
+}
+
+func readConfig(v *viper.Viper, configPath string) error {
+	v.AutomaticEnv()
+	v.SetEnvPrefix(internal.ApplicationName)
+	// allow for nested options to be specified via environment variables
+	// e.g. pod.context = APPNAME_POD_CONTEXT
+	v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+
+	// use explicitly the given user config
+	if configPath != "" {
+		v.SetConfigFile(configPath)
+		if err := v.ReadInConfig(); err == nil {
+			return nil
+		}
+		// don't fall through to other options if this fails
+		return fmt.Errorf("unable to read config: %v", configPath)
+	}
+
+	// start searching for valid configs in order...
+
+	// 1. look for .<appname>.yaml (in the current directory)
+	v.AddConfigPath(".")
+	v.SetConfigName(internal.ApplicationName)
+	if err := v.ReadInConfig(); err == nil {
+		return nil
+	}
+
+	// 2. look for .<appname>/config.yaml (in the current directory)
+	v.AddConfigPath("." + internal.ApplicationName)
+	v.SetConfigName("config")
+	if err := v.ReadInConfig(); err == nil {
+		return nil
+	}
+
+	// 3. look for ~/.<appname>.yaml
+	home, err := homedir.Dir()
+	if err == nil {
+		v.AddConfigPath(home)
+		v.SetConfigName("." + internal.ApplicationName)
+		if err := v.ReadInConfig(); err == nil {
+			return nil
+		}
+	}
+
+	// 4. look for <appname>/config.yaml in xdg locations (starting with xdg home config dir, then moving upwards)
+	v.AddConfigPath(path.Join(xdg.ConfigHome, internal.ApplicationName))
+	for _, dir := range xdg.ConfigDirs {
+		v.AddConfigPath(path.Join(dir, internal.ApplicationName))
+	}
+	v.SetConfigName("config")
+	if err := v.ReadInConfig(); err == nil {
+		return nil
+	}
+
+	return fmt.Errorf("application config not found")
+}

internal/constants.go

@@ -0,0 +1,4 @@
+package internal
+
+// note: must be a single word, all lowercase
+const ApplicationName = "imgbom"

internal/format/color.go

@@ -0,0 +1,21 @@
+package format
+
+import "fmt"
+
+const (
+	DefaultColor Color = iota + 30
+	Red
+	Green
+	Yellow
+	Blue
+	Magenta
+	Cyan
+	White
+)
+
+type Color uint8
+
+// TODO: not cross platform (windows...)
+func (c Color) Format(s string) string {
+	return fmt.Sprintf("\x1b[%dm%s\x1b[0m", c, s)
+}

internal/log/log.go

@@ -0,0 +1,25 @@
+package log
+
+import "github.com/anchore/imgbom/imgbom/logger"
+
+var Log logger.Logger = &nopLogger{}
+
+func Errorf(format string, args ...interface{}) {
+	Log.Errorf(format, args...)
+}
+
+func Infof(format string, args ...interface{}) {
+	Log.Infof(format, args...)
+}
+
+func Info(args ...interface{}) {
+	Log.Info(args...)
+}
+
+func Debugf(format string, args ...interface{}) {
+	Log.Debugf(format, args...)
+}
+
+func Debug(args ...interface{}) {
+	Log.Debug(args...)
+}

internal/log/nop.go

@@ -0,0 +1,9 @@
+package log
+
+type nopLogger struct{}
+
+func (l *nopLogger) Errorf(format string, args ...interface{}) {}
+func (l *nopLogger) Infof(format string, args ...interface{})  {}
+func (l *nopLogger) Info(args ...interface{})                  {}
+func (l *nopLogger) Debugf(format string, args ...interface{}) {}
+func (l *nopLogger) Debug(args ...interface{})                 {}

internal/logger/zap.go

@@ -0,0 +1,141 @@
+package logger
+
+import (
+	"os"
+
+	"github.com/anchore/imgbom/internal/format"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+var levelToColor = map[zapcore.Level]format.Color{
+	zapcore.DebugLevel:  format.Magenta,
+	zapcore.InfoLevel:   format.Blue,
+	zapcore.WarnLevel:   format.Yellow,
+	zapcore.ErrorLevel:  format.Red,
+	zapcore.DPanicLevel: format.Red,
+	zapcore.PanicLevel:  format.Red,
+	zapcore.FatalLevel:  format.Red,
+}
+
+type LogConfig struct {
+	EnableConsole bool
+	EnableFile    bool
+	Structured    bool
+	Level         zapcore.Level
+	FileLocation  string
+}
+
+type ZapLogger struct {
+	Config LogConfig
+	Logger *zap.SugaredLogger
+}
+
+// TODO: Consider a human readable text encoder for better field handeling:
+// - https://github.com/uber-go/zap/issues/570
+// - https://github.com/uber-go/zap/pull/123
+// - TextEncoder w/ old interface: https://github.com/uber-go/zap/blob/6c2107996402d47d559199b78e1c44747fe732f9/text_encoder.go
+// - New interface example: https://github.com/uber-go/zap/blob/c2633d6de2d6e1170ad8f150660e3cf5310067c8/zapcore/json_encoder.go
+// - Register the encoder: https://github.com/uber-go/zap/blob/v1.15.0/encoder.go
+func NewZapLogger(config LogConfig) *ZapLogger {
+	appLogger := ZapLogger{
+		Config: config,
+	}
+	cores := []zapcore.Core{}
+
+	if config.EnableConsole {
+		// note: the report should go to stdout, all logs should go to stderr
+		writer := zapcore.Lock(os.Stderr)
+		core := zapcore.NewCore(appLogger.getConsoleEncoder(config), writer, config.Level)
+		cores = append(cores, core)
+	}
+
+	if config.EnableFile {
+		writer := zapcore.AddSync(appLogger.logFileWriter(config.FileLocation))
+		core := zapcore.NewCore(appLogger.fileEncoder(config), writer, config.Level)
+		cores = append(cores, core)
+	}
+
+	combinedCore := zapcore.NewTee(cores...)
+
+	// AddCallerSkip skips 2 number of callers, this is important else the file that gets
+	// logged will always be the wrapped file (In our case logger.go)
+	appLogger.Logger = zap.New(
+		combinedCore,
+		zap.AddCallerSkip(2),
+		zap.AddCaller(),
+	).Sugar()
+
+	return &appLogger
+}
+
+func (l *ZapLogger) GetNamedLogger(name string) *ZapLogger {
+	return &ZapLogger{
+		Logger: l.Logger.Named(name),
+	}
+}
+
+func (l *ZapLogger) getConsoleEncoder(config LogConfig) zapcore.Encoder {
+	encoderConfig := zap.NewProductionEncoderConfig()
+	if config.Structured {
+		encoderConfig.EncodeName = zapcore.FullNameEncoder
+		encoderConfig.EncodeCaller = zapcore.FullCallerEncoder
+		return zapcore.NewJSONEncoder(encoderConfig)
+	}
+	encoderConfig.EncodeTime = nil
+	encoderConfig.EncodeCaller = nil
+	encoderConfig.EncodeLevel = l.consoleLevelEncoder
+	encoderConfig.EncodeName = l.nameEncoder
+	return zapcore.NewConsoleEncoder(encoderConfig)
+}
+
+func (l *ZapLogger) nameEncoder(loggerName string, enc zapcore.PrimitiveArrayEncoder) {
+	enc.AppendString("[" + loggerName + "]")
+}
+
+func (l *ZapLogger) consoleLevelEncoder(level zapcore.Level, enc zapcore.PrimitiveArrayEncoder) {
+	if level != zapcore.InfoLevel || l.Config.Level == zapcore.DebugLevel {
+		color, ok := levelToColor[level]
+		if !ok {
+			enc.AppendString("[" + level.CapitalString() + "]")
+		} else {
+			enc.AppendString("[" + color.Format(level.CapitalString()) + "]")
+		}
+	}
+}
+
+func (l *ZapLogger) fileEncoder(config LogConfig) zapcore.Encoder {
+	encoderConfig := zap.NewProductionEncoderConfig()
+	encoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
+	encoderConfig.EncodeName = zapcore.FullNameEncoder
+	encoderConfig.EncodeCaller = zapcore.FullCallerEncoder
+	if config.Structured {
+		return zapcore.NewJSONEncoder(encoderConfig)
+	}
+	return zapcore.NewConsoleEncoder(encoderConfig)
+}
+
+func (l *ZapLogger) logFileWriter(location string) zapcore.WriteSyncer {
+	file, _ := os.Create(location)
+	return zapcore.AddSync(file)
+}
+
+func (l *ZapLogger) Debugf(format string, args ...interface{}) {
+	l.Logger.Debugf(format, args...)
+}
+
+func (l *ZapLogger) Infof(format string, args ...interface{}) {
+	l.Logger.Infof(format, args...)
+}
+
+func (l *ZapLogger) Debug(args ...interface{}) {
+	l.Logger.Debug(args...)
+}
+
+func (l *ZapLogger) Info(args ...interface{}) {
+	l.Logger.Info(args...)
+}
+
+func (l *ZapLogger) Errorf(format string, args ...interface{}) {
+	l.Logger.Errorf(format, args...)
+}