add analyzer interface/controller and supporting package/catalog

Makefile

@@ -21,6 +21,8 @@ bootstrap:
 	curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b .tmp/ v1.26.0
 	# install go-acc
 	GOPATH=$(shell realpath ${TEMPDIR}) GO111MODULE=off go get github.com/ory/go-acc
+	# cleanup
+	rm -rf $(TEMPDIR)/src
 
 lint:
 	@printf '$(TITLE)Running linters$(RESET)\n'
@@ -47,4 +49,4 @@ integration:
 build-release:
 	go build -s -w -X main.version="$(git describe --tags --dirty --always)" \
 				   -X main.commit="$(git describe --dirty --always)" \
-				   -X main.buildTime="$(date --rfc-3339=seconds --utc)"
+				   -X main.buildTime="$(date --rfc-3339=seconds --utc)"

imgbom/analyzer/analyzer.go

@@ -0,0 +1,14 @@
+package analyzer
+
+import (
+	"github.com/anchore/imgbom/imgbom/pkg"
+	"github.com/anchore/imgbom/imgbom/scope"
+	"github.com/anchore/stereoscope/pkg/file"
+)
+
+type Analyzer interface {
+	SelectFiles(scope.Scope) []file.Reference
+	// NOTE: one of the errors which is returned is "IterationNeeded", which indicates to the driver to
+	// continue with another Select/Analyze pass
+	Analyze(pkg.CatalogWriter, map[file.Reference]string) error
+}

imgbom/analyzer/controller.go

@@ -0,0 +1,21 @@
+package analyzer
+
+var controllerInstance controller
+
+func init() {
+	controllerInstance = controller{
+		analyzers: make([]Analyzer, 0),
+	}
+}
+
+type controller struct {
+	analyzers []Analyzer
+}
+
+func (c *controller) add(a Analyzer) {
+	c.analyzers = append(c.analyzers, a)
+}
+
+func Add(a Analyzer) {
+	controllerInstance.add(a)
+}

imgbom/pkg/catalog.go

@@ -0,0 +1,18 @@
+package pkg
+
+type Catalog struct {
+	// TODO: catalog by package ID for potential indexing
+	catalog map[Type][]Package
+}
+
+type CatalogWriter interface {
+	Add(Package) error
+}
+
+func (c *Catalog) Add(p Package) {
+	_, ok := c.catalog[p.Type]
+	if !ok {
+		c.catalog[p.Type] = make([]Package, 0)
+	}
+	c.catalog[p.Type] = append(c.catalog[p.Type], p)
+}

imgbom/pkg/package.go

@@ -0,0 +1,16 @@
+package pkg
+
+import "github.com/anchore/stereoscope/pkg/file"
+
+// TODO: add package ID (random/incremental)
+
+type Package struct {
+	Name     string
+	Version  string
+	Source   []file.Reference
+	Licenses []string
+	Type     Type
+	Metadata interface{}
+}
+
+// TODO: stringer...

imgbom/pkg/type.go

@@ -0,0 +1,17 @@
+package pkg
+
+const (
+	UnknownPkg uint = iota
+	ApkPkg
+	DebPkg
+	JavaPkg
+	NodePkg
+	PacmanPkg
+	PythonPkg
+	RpmPkg
+	RubyPkg
+)
+
+type Type uint
+
+// TODO: stringer...

imgbom/scope/scope.go

@@ -10,6 +10,7 @@ import (
 type Scope struct {
 	Option Option
 	Trees  []*tree.FileTree
+	Image  *image.Image
 }
 
 func NewScope(img *image.Image, option Option) (Scope, error) {
@@ -40,5 +41,6 @@ func NewScope(img *image.Image, option Option) (Scope, error) {
 	return Scope{
 		Option: option,
 		Trees:  trees,
+		Image:  img,
 	}, nil
 }