storage: support ConfigStorage, memory done, fs wip

2 files changed, 26 insertions, 3 deletions

diff --git a/storage/filesystem/internal/dotgit/dotgit.go b/storage/filesystem/internal/dotgit/dotgit.go
index f365f13..448f6a2 100644
--- a/storage/filesystem/internal/dotgit/dotgit.go
+++ b/storage/filesystem/internal/dotgit/dotgit.go
@@ -12,17 +12,18 @@ import (
 const (
 	suffix         = ".git"
 	packedRefsPath = "packed-refs"
+	configPath     = "config"
 )
 
 var (
 	// ErrNotFound is returned by New when the path is not found.
 	ErrNotFound = errors.New("path not found")
-	// ErrIdxNotFound is returned by Idxfile when the idx file is not found on the
-	// repository.
+	// ErrIdxNotFound is returned by Idxfile when the idx file is not found
 	ErrIdxNotFound = errors.New("idx file not found")
 	// ErrPackfileNotFound is returned by Packfile when the packfile is not found
-	// on the repository.
 	ErrPackfileNotFound = errors.New("packfile not found")
+	// ErrConfigNotFound is returned by Config when the config is not found
+	ErrConfigNotFound = errors.New("config file not found")
 )
 
 // The DotGit type represents a local git repository on disk. This
@@ -103,3 +104,17 @@ func (d *DotGit) Idxfile() (fs.FS, string, error) {
 
 	return nil, "", ErrIdxNotFound
 }
+
+// Config returns the path of the config file
+func (d *DotGit) Config() (fs.FS, string, error) {
+	configFile := d.fs.Join(d.path, configPath)
+	if _, err := d.fs.Stat(configFile); err != nil {
+		if os.IsNotExist(err) {
+			return nil, "", ErrNotFound
+		}
+
+		return nil, "", err
+	}
+
+	return d.fs, configFile, nil
+}
diff --git a/storage/filesystem/internal/dotgit/dotgit_test.go b/storage/filesystem/internal/dotgit/dotgit_test.go
index 6125114..7c39c87 100644
--- a/storage/filesystem/internal/dotgit/dotgit_test.go
+++ b/storage/filesystem/internal/dotgit/dotgit_test.go
@@ -143,6 +143,14 @@ func (s *SuiteDotGit) TestRefsFromHEADFile(c *C) {
 	c.Assert(string(ref.Target()), Equals, "refs/heads/master")
 }
 
+func (s *SuiteDotGit) TestConfig(c *C) {
+	_, d := s.newFixtureDir(c, "spinnaker")
+	fs, path, err := d.Config()
+	c.Assert(err, IsNil)
+	c.Assert(fs, NotNil)
+	c.Assert(path, Not(Equals), "")
+}
+
 func findReference(refs []*core.Reference, name string) *core.Reference {
 	n := core.ReferenceName(name)
 	for _, ref := range refs {