Use flags to specify crawling mode and github user/repo info

api/internal/crawl/cmd/crawler/crawler.go

@@ -46,7 +46,7 @@ func NewCrawlMode(s string) CrawlMode {
 		return CrawlUser
 	case "github-repo":
 		return CrawlRepo
-	case "":
+	case "index+github":
 		return CrawlIndexAndGithub
 	case "index":
 		return CrawlIndex
@@ -57,21 +57,20 @@ func NewCrawlMode(s string) CrawlMode {
 	}
 }
 
-func Usage() {
-	fmt.Printf("Usage: %s [mode] [githubUser|githubRepo]\n", os.Args[0])
-	fmt.Printf("\tmode can be one of [github-user, github-repo, index, github]\n")
-	fmt.Printf("%s: crawl all the documents in the index and crawling all the kustomization files on Github\n", os.Args[0])
-	fmt.Printf("%s index: crawl all the documents in the index\n", os.Args[0])
-	fmt.Printf("%s gihub: crawl all the kustomization files on Github\n", os.Args[0])
-	fmt.Printf("%s github-user <github-user>: Crawl all the kustomization files in all the repositories of a Github user\n", os.Args[0])
-	fmt.Printf("\tFor example, %s github-user kubernetes-sigs\n", os.Args[0])
-	fmt.Printf("%s github-repo <github-repo>: Crawl all the kustomization files in a Github repo\n", os.Args[0])
-	fmt.Printf("\tFor example, %s github-repo kubernetes-sigs/kustomize\n", os.Args[0])
-}
-
 func main() {
 	indexNamePtr := flag.String(
 		"index", "kustomize", "The name of the ElasticSearch index.")
+	modePtr := flag.String("mode", "index+github",
+		`The crawling mode, which can be one of [github-user, github-repo, index, github, index+github].
+  * github-user: crawl all the kustomization files in all the repositories of a Github user (--github-user must be specified for this mode).
+  * github-repo: crawl all the kustomization files in a Github repository (--github-repo must be specified for this mode).
+  * index: crawl all the documents in the index.
+  * gihub: crawl all the kustomization files on Github.
+  * index+github: crawl all the documents in the index and crawling all the kustomization files on Github.`)
+	githubUserPtr := flag.String("github-user", "",
+		"A github user name (e.g., kubernetes-sigs). This flag is required for the `github-user` mode.")
+	githubRepoPtr := flag.String("github-repo", "",
+		"A github repository name (e.g., kubernetes-sigs/kustomize). This flag is required for the `github-repo` mode.")
 	flag.Parse()
 
 	githubToken := os.Getenv(githubAccessTokenVar)
@@ -128,12 +127,7 @@ func main() {
 	// This helps avoid indexing a given document multiple times.
 	seen := crawler.NewSeenMap()
 
-	var mode CrawlMode
-	if len(os.Args) == 1 {
-		mode = CrawlIndexAndGithub
-	} else {
-		mode = NewCrawlMode(os.Args[1])
-	}
+	mode := NewCrawlMode(*modePtr)
 
 	ghCrawlerConstructor := func(user, repo string) crawler.Crawler {
 		if user != "" {
@@ -192,21 +186,21 @@ func main() {
 		crawlers := []crawler.Crawler{ghCrawlerConstructor("", "")}
 		crawler.CrawlGithub(ctx, crawlers, docConverter, indexFunc, seen)
 	case CrawlUser:
-		if len(os.Args) < 3 {
-			Usage()
-			log.Fatalf("Please specify a github user!")
+		if *githubUserPtr == "" {
+			flag.Usage()
+			log.Fatalf("Please specify a github user with the github-user flag!")
 		}
-		crawlers := []crawler.Crawler{ghCrawlerConstructor(os.Args[2], "")}
+		crawlers := []crawler.Crawler{ghCrawlerConstructor(*githubUserPtr, "")}
 		crawler.CrawlGithub(ctx, crawlers, docConverter, indexFunc, seen)
 	case CrawlRepo:
-		if len(os.Args) < 3 {
-			Usage()
-			log.Fatalf("Please specify a github repo!")
+		if *githubRepoPtr == "" {
+			flag.Usage()
+			log.Fatalf("Please specify a github repository with the github-repo flag!")
 		}
-		crawlers := []crawler.Crawler{ghCrawlerConstructor("", os.Args[2])}
+		crawlers := []crawler.Crawler{ghCrawlerConstructor("", *githubRepoPtr)}
 		crawler.CrawlGithub(ctx, crawlers, docConverter, indexFunc, seen)
 	case CrawlUnknown:
-		Usage()
-		log.Fatalf("The crawler mode must be one of [github-user, github-repo, index, github]")
+		flag.Usage()
+		log.Fatalf("The --mode flag must be one of [github-user, github-repo, index, github, index+github].")
 	}
 }

api/internal/crawl/config/crawler/job/README.md

@@ -1,4 +1,4 @@
-There are three ways of running the crawler job.
+The crawler job can run in one of the following mode:
 
 # Crawling all the documents in the index and crawling all the kustomization files on Github
 
@@ -7,14 +7,13 @@ of the container should be:
 
 ```
         command: ["/crawler"]
-        args: []
 ```
 
 Or
 
 ```
         command: ["/crawler"]
-        args: [""]
+        args: ["--mode=index+github"]
 ```
 
 # Crawling all the documents in the index
@@ -23,7 +22,7 @@ The `command` and `args` field of the container should be:
 
 ```
         command: ["/crawler"]
-        args: ["index"]
+        args: ["--mode=index"]
 ```
 
 # Crawling all the kustomization files on Github
@@ -32,7 +31,7 @@ The `command` and `args` field of the container should be:
 
 ```
         command: ["/crawler"]
-        args: ["github"]
+        args: ["--mode=github"]
 ```
 
 # Crawling all the kustomization files in a Github repo
@@ -41,7 +40,7 @@ The `command` and `args` field of the container should be like:
 
 ```
         command: ["/crawler"]
-        args: ["github-repo", "kubernetes-sigs/kustomize"]
+        args: ["--mode=github-repo", "--github-repo=kubernetes-sigs/kustomize"]
 ```
 
 # Crawling all the kustomization files in all the repositories of a Github user
@@ -50,5 +49,5 @@ The `command` and `args` field of the container should be like:
 
 ```
         command: ["/crawler"]
-        args: ["github-user", "kubernetes-sigs"]
+        args: ["--github-user", "--github-user=kubernetes-sigs"]
 ```

api/internal/crawl/config/crawler/job/job.yaml

@@ -11,7 +11,7 @@ spec:
         image: gcr.io/haiyanmeng-gke-dev/crawler:v1
         imagePullPolicy: Always
         command: ["/crawler"]
-        args: ["github-repo", "kubernetes-sigs/kustomize"]
+        args: ["--mode=github-repo", "--github-repo=kubernetes-sigs/kustomize", "--index=kustomize"]
         env:
         - name: GITHUB_ACCESS_TOKEN
           valueFrom: