chore(internal/postprocessor): add support for root dir OwlBot dest

* Fixes post-processor for OwlBot.yaml paths to root dir / for snippets

refs: googleapis#7850

.github/.OwlBot.lock.yaml

@@ -13,4 +13,4 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-go:latest
-  digest: sha256:630f3a88a869c8bc9c5748bb861ee54a325d09cf02f7211fc54ec111e7944151
+  digest: sha256:1798d18f0b7ec6d01624cba6ddcc79ab6b7e0ae5b134fdd8c9a3c7339cf97508

.github/.OwlBot.yaml

@@ -383,8 +383,8 @@ deep-copy-regex:
     dest: /compute/apiv1
   - source: /google/cloud/confidentialcomputing/v1/cloud.google.com/go
     dest: /
-  - source: /google/cloud/confidentialcomputing/v1alpha1/cloud.google.com/go/confidentialcomputing/apiv1alpha1
-    dest: /confidentialcomputing/apiv1alpha1
+  - source: /google/cloud/confidentialcomputing/v1alpha1/cloud.google.com/go
+    dest: /
   - source: /google/cloud/contactcenterinsights/v1/cloud.google.com/go/contactcenterinsights/apiv1
     dest: /contactcenterinsights/apiv1
   - source: /google/container/v1/cloud.google.com/go/container/apiv1

internal/postprocessor/config.go

@@ -56,6 +56,7 @@ func (p *postProcessor) loadConfig() error {
 			InputDirectory string `yaml:"input-directory"`
 			ServiceConfig  string `yaml:"service-config"`
 			ImportPath     string `yaml:"import-path"`
+			RelPath        string `yaml:"rel-path"`
 		} `yaml:"service-configs"`
 		ManualClients []*ManifestEntry `yaml:"manual-clients"`
 	}
@@ -90,17 +91,24 @@ func (p *postProcessor) loadConfig() error {
 		c.GoogleapisToImportPath[v.InputDirectory] = &libraryInfo{
 			ServiceConfig: v.ServiceConfig,
 			ImportPath:    v.ImportPath,
+			RelPath:       v.RelPath,
 		}
 	}
 	for _, v := range owlBotConfig.DeepCopyRegex {
-		c.ClientRelPaths = append(c.ClientRelPaths, v.Dest)
 		i := strings.Index(v.Source, "/cloud.google.com/go")
 		li, ok := c.GoogleapisToImportPath[v.Source[1:i]]
 		if !ok {
 			return fmt.Errorf("unable to find value for %q, it may be missing a service config entry", v.Source[1:i])
 		}
-		li.ImportPath = v.Source[i+1:]
-		li.RelPath = v.Dest
+		if li.ImportPath == "" {
+			li.ImportPath = v.Source[i+1:]
+			fmt.Printf("set li.ImportPath from v.Source: %s", v.Source)
+		}
+		if li.RelPath == "" {
+			li.RelPath = strings.TrimPrefix(li.ImportPath, "cloud.google.com/go")
+			fmt.Printf("set li.RelPath from li.ImportPath: %s", li.ImportPath)
+		}
+		c.ClientRelPaths = append(c.ClientRelPaths, li.RelPath)
 	}
 	p.config = c
 	return nil

internal/postprocessor/config.yaml

@@ -364,6 +364,8 @@ service-configs:
     service-config: dataplex_v1.yaml
   - input-directory: google/cloud/dataproc/v1
     service-config: dataproc_v1.yaml
+    import-path: cloud.google.com/go/dataproc/v2/apiv1
+    rel-path: /dataproc/apiv1
   - input-directory: google/cloud/dataqna/v1alpha
     service-config: dataqna_v1alpha.yaml
   - input-directory: google/cloud/datastream/v1
@@ -635,8 +637,10 @@ service-configs:
     service-config: compute_v1.yaml
   - input-directory: google/cloud/confidentialcomputing/v1
     service-config: confidentialcomputing_v1.yaml
+    import-path: cloud.google.com/go/confidentialcomputing/apiv1
   - input-directory: google/cloud/confidentialcomputing/v1alpha1
     service-config: confidentialcomputing_v1alpha1.yaml
+    import-path: cloud.google.com/go/confidentialcomputing/apiv1alpha1
   - input-directory: google/devtools/containeranalysis/v1beta1
     service-config: containeranalysis_v1beta1.yaml
   - input-directory: google/firestore/admin/v1

internal/postprocessor/main.go

@@ -315,6 +315,10 @@ func (p *postProcessor) UpdateSnippetsMetadata() error {
 		// OwlBot dest relative paths in ClientRelPaths begin with /, so the
 		// first path segment is the second element.
 		moduleName := strings.Split(clientRelPath, "/")[1]
+		if moduleName == "" {
+			return errors.New("UpdateSnippetsMetadata: moduleName is empty")
+		}
+		log.Println("UpdateSnippetsMetadata: ", clientRelPath)
 		// Skip if dirs option set and this module is not included.
 		if len(p.modules) > 0 && !contains(p.modules, moduleName) {
 			continue
@@ -328,10 +332,15 @@ func (p *postProcessor) UpdateSnippetsMetadata() error {
 			return err
 		}
 		snpDir := filepath.Join(p.googleCloudDir, "internal", "generated", "snippets", clientRelPath)
-		metadataFiles, err := filepath.Glob(filepath.Join(snpDir, "snippet_metadata.*.json"))
+		p := filepath.Join(snpDir, "snippet_metadata.*.json")
+		metadataFiles, err := filepath.Glob(p)
 		if err != nil {
 			return err
 		}
+		if len(metadataFiles) == 0 {
+			log.Println("UpdateSnippetsMetadata: skipping, file not found with glob: ", p)
+			continue
+		}
 		read, err := os.ReadFile(metadataFiles[0])
 		if err != nil {
 			return err