Support sync with multiple repositories (#58)

README.md

@@ -65,7 +65,7 @@ You can add `jobs.<job_id>.steps.with.prune: false` in order to preserver all ex
 
 ## Sync labels on another repository
 
-It is also possible to specify a repository as an input to the action. This is useful if you want to store your labels somewhere centrally and modify multiple repository labels.
+It is also possible to specify a repository or repositories as an input to the action. This is useful if you want to store your labels somewhere centrally and modify multiple repository labels.
 
 **Note: The default `GITHUB_TOKEN` will not have permissions to operate on other repositories so you must specify a personal access token in your secrets.**
 
@@ -85,7 +85,9 @@ jobs:
       - uses: micnncim/action-label-syncer@v1
         with:
           manifest: path/to/manifest/labels.yml
-          repository: myother/repository
+          repository: |
+              owner/repository-1
+              owner/repository-2
           token: ${{ secrets.PERSONAL_TOKEN }}
 ```
 

cmd/action-label-syncer/main.go

@@ -17,19 +17,31 @@ package main
 import (
 	"context"
 	"fmt"
+	"log"
 	"os"
 	"strconv"
 	"strings"
 
 	"github.com/micnncim/action-label-syncer/pkg/github"
+	"go.uber.org/multierr"
 )
 
 func main() {
+	if err := run(context.Background()); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func run(ctx context.Context) error {
 	manifest := os.Getenv("INPUT_MANIFEST")
 	labels, err := github.FromManifestToLabels(manifest)
 	if err != nil {
-		fmt.Fprintf(os.Stderr, "unable to load manifest: %v\n", err)
-		os.Exit(1)
+		return fmt.Errorf("unable to load manifest: %w", err)
+	}
+
+	prune, err := strconv.ParseBool(os.Getenv("INPUT_PRUNE"))
+	if err != nil {
+		return fmt.Errorf("unable to parse prune: %w", err)
 	}
 
 	token := os.Getenv("INPUT_TOKEN")
@@ -42,22 +54,23 @@ func main() {
 	if len(repository) == 0 {
 		repository = os.Getenv("GITHUB_REPOSITORY")
 	}
-	slugs := strings.Split(repository, "/")
-	if len(slugs) != 2 {
-		fmt.Fprintf(os.Stderr, "invalid repository: %v\n", repository)
-		os.Exit(1)
-	}
-	owner, repo := slugs[0], slugs[1]
 
-	prune, err := strconv.ParseBool(os.Getenv("INPUT_PRUNE"))
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "unable to parse prune: %v\n", err)
-		os.Exit(1)
-	}
+	// Doesn't run concurrently to avoid GitHub API rate limit.
+	for _, r := range strings.Split(repository, "\n") {
+		if len(r) == 0 {
+			continue
+		}
+
+		s := strings.Split(r, "/")
+		if len(s) != 2 {
+			err = multierr.Append(err, fmt.Errorf("invalid repository: %s", repository))
+		}
+		owner, repo := s[0], s[1]
 
-	ctx := context.Background()
-	if err := client.SyncLabels(ctx, owner, repo, labels, prune); err != nil {
-		fmt.Fprintf(os.Stderr, "unable to sync labels: %v\n", err)
-		os.Exit(1)
+		if err := client.SyncLabels(ctx, owner, repo, labels, prune); err != nil {
+			err = multierr.Append(err, fmt.Errorf("unable to sync labels: %w", err))
+		}
 	}
+
+	return err
 }

go.mod

@@ -5,6 +5,7 @@ go 1.13
 require (
 	github.com/google/go-github v17.0.0+incompatible
 	github.com/google/go-querystring v1.0.0 // indirect
+	go.uber.org/multierr v1.7.0
 	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
 	golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
 	gopkg.in/yaml.v2 v2.4.0

go.sum

@@ -1,10 +1,23 @@
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+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/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-github v17.0.0+incompatible h1:N0LgJ1j65A7kfXrZnUDaYCs/Sf4rEjNlfyDHW9dolSY=
 github.com/google/go-github v17.0.0+incompatible/go.mod h1:zLgOLi98H3fifZn+44m+umXrS52loVEgC2AApnigrVQ=
 github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
 github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
+go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
+go.uber.org/multierr v1.7.0 h1:zaiO/rmgFjbmCXdSYJWQcdvOCsthmdaHfr3Gm2Kx4Ec=
+go.uber.org/multierr v1.7.0/go.mod h1:7EAYxJLBy9rStEaz58O2t4Uvip6FSURkq8/ppBp95ak=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e h1:bRhVy7zSSasaqNksaRZiA5EEI+Ei4I1nO5Jh72wfHlg=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -18,10 +31,8 @@ google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO50
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-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 v2.2.7 h1:VUgggvou5XRW9mHwD/yXxIYSMtY0zoKQf/v226p2nyo=
-gopkg.in/yaml.v2 v2.2.7/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 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=