add logging

download-latest-firmware-build.py

@@ -10,6 +10,7 @@ import os.path
 import re
 import tempfile
 import sys
+import logging
 import subprocess
 
 GITLAB_API_BASE = "https://gitlab.freifunk-stuttgart.de/api/v4"
@@ -19,6 +20,7 @@ ap = argparse.ArgumentParser()
 ap.add_argument("--pipeline-id", help="Pipeline ID to download. If omitted, download latest successfull.", default=None)
 ap.add_argument("--pipeline-id-file", help="Store downloaded Pipeline ID in this file and only download if latest pipeline ID doesn't match file contents")
 ap.add_argument("--create-symlink", help="Create symlink to downloaded firmware at the specified path")
+ap.add_argument("--debug", action="store_true", help="Produce lots of debug output")
 args = ap.parse_args()
 
 def find_version_from_archive(archive_file_list):
@@ -28,30 +30,38 @@ def find_version_from_archive(archive_file_list):
             version_regex = re.compile(r'gluon-ffs-(([0-9]+\.[0-9]+[+][0-9]{4}-[0-9]{2}-[0-9]{2})-g\.[a-f0-9]+-s\.[a-f0-9]+-)')
             version_matches = version_regex.match(filename)
             if version_matches:
+                logging.debug("Found version number {}".format(version_matches.group(2)))
                 return version_matches.group(2)
     return None
 
 def extract_zip(artifact_zipfile):
+    logging.debug("Extracting ZIP from FD {}".format(artifact_zipfile))
     with zipfile.ZipFile(artifact_zipfile) as artifact_zip:
         version = find_version_from_archive(artifact_zip.infolist())
         with tempfile.TemporaryDirectory(dir=os.getcwd()) as tempdir:
             # Python ZipFile doesn't support symlinks
             # https://bugs.python.org/issue27318
+            logging.debug("Running 'unzip'")
             subprocess.check_call(['unzip', artifact_zipfile.name, '-d{}'.format(tempdir)], stdin=artifact_zipfile)
             outputdir = os.path.join(tempdir, "gluon", "output")
             os.rename(outputdir, version)
         return version
 
 def find_latest_pipeline_id():
+    logging.debug("Finding pipeline ID")
     pipelines_request = requests.get("{}/projects/{}/pipelines".format(GITLAB_API_BASE, PROJECT_ID))
     pipelines_request.raise_for_status()
 
     pipelines = pipelines_request.json()
     for pipeline in pipelines:
         if pipeline["status"] == "success" and pipeline["ref"].startswith("v"):
+            logging.debug("Found Pipeline ID: {}".format(pipeline["id"]))
             return pipeline["id"]
     return None
 
+if args.debug:
+    logging.basicConfig(level=logging.DEBUG)
+
 if args.pipeline_id is None:
     pipeline_id = int(find_latest_pipeline_id())