TrueCloudLab/dco-go
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Use merge-base as a starting point

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Set it to target branch and check only the commits we are interested in.
If the commit is already in the branch, we just get an old behaviour.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
This commit is contained in:
Evgenii Stratonikov 2023-07-13 11:51:07 +03:00
parent 102e7d41c0
commit 2f1de6fc41
1 changed files with 30 additions and 2 deletions
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32
main.go
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@ -9,6 +9,7 @@ import (
"strings"
git "github.com/go-git/go-git/v5"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/object"
gha "github.com/sethvargo/go-githubactions"
)
@ -37,14 +38,17 @@ func main() {
}
// Limit number of iterations.
from := gha.GetInput("from")
var lca *object.Commit
if from := gha.GetInput("from"); from != "" {
lca = getMergeBase(r, head, from)
}
// Processing result.
var fail bool
_ = commits.ForEach(func(c *object.Commit) error {
// Stop iterator when limit is reached.
if len(from) != 0 && strings.HasPrefix(c.ID().String(), from) {
if lca != nil && c.Hash == lca.Hash {
return errors.New("stop")
}
@ -81,3 +85,27 @@ func main() {
os.Exit(1)
}
}
func getMergeBase(r *git.Repository, head *plumbing.Reference, from string) *object.Commit {
h, err := r.ResolveRevision(plumbing.Revision(from))
if err != nil {
log.Fatalf("Failed to resolve a reference: %v", err)
}
to, err := r.CommitObject(*h)
if err != nil {
log.Fatalf("Failed to get commit object: %v", err)
}
other, err := r.CommitObject(head.Hash())
if err != nil {
log.Fatalf("Failed to get HEAD commit object: %v", err)
}
cc, err := to.MergeBase(other)
if err != nil {
log.Fatalf("Failed to determine merge-base: %v", err)
}
return cc[0]
}