From dc98682e7e5817eb726cdf0a4452c4e89de1b64d Mon Sep 17 00:00:00 2001
From: Alper Rifat Ulucinar <ulucinar@users.noreply.github.com>
Date: Thu, 9 Mar 2023 21:29:48 +0300
Subject: [PATCH] [scraper]: Add support for deducing resource name from file
 path if scraper cannot extract it from the markdown file.

Signed-off-by: Alper Rifat Ulucinar <ulucinar@users.noreply.github.com>
---
 cmd/scraper/main.go  |  2 ++
 pkg/registry/meta.go | 21 +++++++++++++++++++--
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/cmd/scraper/main.go b/cmd/scraper/main.go
index 5c33bd68..0ec2af2b 100644
--- a/cmd/scraper/main.go
+++ b/cmd/scraper/main.go
@@ -18,6 +18,7 @@ func main() {
 		app            = kingpin.New(filepath.Base(os.Args[0]), "Terraform Registry provider metadata scraper.").DefaultEnvars()
 		outFile        = app.Flag("out", "Provider metadata output file path").Short('o').Default("provider-metadata.yaml").OpenFile(os.O_CREATE, 0644)
 		providerName   = app.Flag("name", "Provider name").Short('n').Required().String()
+		resourcePrefix = app.Flag("resource-prefix", `Terraform resource name prefix for the Terraform provider. For example, this is "google" for the google Terraform provider.`).String()
 		codeXPath      = app.Flag("code-xpath", "Code XPath expression").Default(`//code[@class="language-terraform" or @class="language-hcl"]/text()`).String()
 		preludeXPath   = app.Flag("prelude-xpath", "Prelude XPath expression").Default(`//text()[contains(., "description") and contains(., "page_title")]`).String()
 		fieldXPath     = app.Flag("field-xpath", "Field documentation XPath expression").Default(`//ul/li//code[1]/text()`).String()
@@ -37,6 +38,7 @@ func main() {
 		FieldDocXPath:  *fieldXPath,
 		ImportXPath:    *importXPath,
 		FileExtensions: *fileExtensions,
+		ResourcePrefix: *resourcePrefix,
 	}), "Failed to scrape Terraform provider metadata")
 	kingpin.FatalIfError(pm.Store((*outFile).Name()), "Failed to store Terraform provider metadata to file: %s", (*outFile).Name())
 }
diff --git a/pkg/registry/meta.go b/pkg/registry/meta.go
index 56389121..0be317ed 100644
--- a/pkg/registry/meta.go
+++ b/pkg/registry/meta.go
@@ -59,7 +59,19 @@ func (r *Resource) addExampleManifest(file *hcl.File, body *hclsyntax.Block) err
 	return nil
 }
 
-func (r *Resource) scrapeExamples(doc *html.Node, codeElXPath string, debug bool) error { // nolint: gocyclo
+func getResourceNameFromPath(path, resourcePrefix string) string {
+	tokens := strings.Split(filepath.Base(path), ".")
+	if len(tokens) < 2 {
+		return ""
+	}
+	prefix := ""
+	if len(resourcePrefix) != 0 {
+		prefix = resourcePrefix + "_"
+	}
+	return fmt.Sprintf("%s%s", prefix, tokens[0])
+}
+
+func (r *Resource) scrapeExamples(doc *html.Node, codeElXPath string, path string, resourcePrefix string, debug bool) error { // nolint: gocyclo
 	resourceName := r.Title
 	nodes := htmlquery.Find(doc, codeElXPath)
 	for _, n := range nodes {
@@ -83,6 +95,9 @@ func (r *Resource) scrapeExamples(doc *html.Node, codeElXPath string, debug bool
 		}
 		body.Blocks = trimmed
 		// first try an exact match to find the example
+		if len(resourceName) == 0 {
+			resourceName = getResourceNameFromPath(path, resourcePrefix)
+		}
 		if err := r.findExampleBlock(f, body.Blocks, &resourceName, true); err != nil {
 			return err
 		}
@@ -441,7 +456,7 @@ func (r *Resource) scrape(path string, config *ScrapeConfiguration) error {
 	r.scrapeFieldDocs(doc, config.FieldDocXPath)
 	r.scrapeImportStatements(doc, config.ImportXPath)
 
-	return r.scrapeExamples(doc, config.CodeXPath, config.Debug)
+	return r.scrapeExamples(doc, config.CodeXPath, path, config.ResourcePrefix, config.Debug)
 }
 
 // ScrapeConfiguration is a configurator for the scraper
@@ -460,6 +475,8 @@ type ScrapeConfiguration struct {
 	ImportXPath string
 	// FileExtensions extensions of the files to be scraped
 	FileExtensions []string
+	// ResourcePrefix Terraform resource name prefix for the Terraform provider
+	ResourcePrefix string
 }
 
 func (sc *ScrapeConfiguration) hasExpectedExtension(fileName string) bool {