Merge pull request drone-plugins#300 from rvoitenko/ecr_scan_on_push

ECR: adding setting to enable image scanning while repo creation

cmd/drone-ecr/main.go

@@ -37,6 +37,7 @@ func main() {
 		lifecyclePolicy  = getenv("PLUGIN_LIFECYCLE_POLICY")
 		repositoryPolicy = getenv("PLUGIN_REPOSITORY_POLICY")
 		assumeRole       = getenv("PLUGIN_ASSUME_ROLE")
+		scanOnPush       = parseBoolOrDefault(false, getenv("PLUGIN_SCAN_ON_PUSH"))
 	)
 
 	// set the region
@@ -72,10 +73,14 @@ func main() {
 	}
 
 	if create {
-		err = ensureRepoExists(svc, trimHostname(repo, registry))
+		err = ensureRepoExists(svc, trimHostname(repo, registry), scanOnPush)
 		if err != nil {
 			log.Fatal(fmt.Sprintf("error creating ECR repo: %v", err))
 		}
+		err = updateImageScannningConfig(svc, trimHostname(repo, registry), scanOnPush)
+		if err != nil {
+			log.Fatal(fmt.Sprintf("error updating scan on push for ECR repo: %v", err))
+		}
 	}
 
 	if lifecyclePolicy != "" {
@@ -118,9 +123,10 @@ func trimHostname(repo, registry string) string {
 	return repo
 }
 
-func ensureRepoExists(svc *ecr.ECR, name string) (err error) {
+func ensureRepoExists(svc *ecr.ECR, name string, scanOnPush bool) (err error) {
 	input := &ecr.CreateRepositoryInput{}
 	input.SetRepositoryName(name)
+	input.SetImageScanningConfiguration(&ecr.ImageScanningConfiguration{ScanOnPush: &scanOnPush})
 	_, err = svc.CreateRepository(input)
 	if err != nil {
 		if aerr, ok := err.(awserr.Error); ok && aerr.Code() == ecr.ErrCodeRepositoryAlreadyExistsException {
@@ -132,6 +138,15 @@ func ensureRepoExists(svc *ecr.ECR, name string) (err error) {
 	return
 }
 
+func updateImageScannningConfig(svc *ecr.ECR, name string, scanOnPush bool) (err error) {
+	input := &ecr.PutImageScanningConfigurationInput{}
+	input.SetRepositoryName(name)
+	input.SetImageScanningConfiguration(&ecr.ImageScanningConfiguration{ScanOnPush: &scanOnPush})
+	_, err = svc.PutImageScanningConfiguration(input)
+
+	return err
+}
+
 func uploadLifeCyclePolicy(svc *ecr.ECR, lifecyclePolicy string, name string) (err error) {
 	input := &ecr.PutLifecyclePolicyInput{}
 	input.SetLifecyclePolicyText(lifecyclePolicy)