Allow capping the number of workers

Prevention for hitting GitHub's abuse detection

Change-Id: Ic836e3aad4fd2152a05d862ed56e069b7fb4b55d

device-deps-regenerator/app.py

@@ -1,3 +1,4 @@
+import argparse
 import concurrent.futures
 import github
 import json
@@ -6,6 +7,10 @@ import traceback
 from github import Github
 from base64 import b64decode
 
+parser = argparse.ArgumentParser()
+parser.add_argument('-j', '--jobs', type=int, help='Max number of workers to use. Default is none')
+args = parser.parse_args()
+
 with open('token') as f:
     g = Github(f.readline().strip(), per_page=200)
 
@@ -65,8 +70,7 @@ n = 1
 dependencies = {}
 other_repos = set()
 
-
-with concurrent.futures.ThreadPoolExecutor() as executor:
+with concurrent.futures.ThreadPoolExecutor(max_workers=args.jobs) as executor:
     for repo in g.get_organization('LineageOS').get_repos():
         if '_device_' not in repo.name:
             continue