Use argparse for tracetools_analysis entrypoints

tracetools_analysis/convert.py

@@ -2,19 +2,22 @@
 # Entrypoint/script to convert CTF trace data to a pickle file
 # TODO
 
+import argparse
 from pickle import Pickler
-import sys
 
 from tracetools_analysis.conversion import ctf
 
 
-def main(argv=sys.argv):
+def main():
-    if len(argv) != 3:
+    parser = argparse.ArgumentParser(description='Convert CTF trace data to a pickle file.')
-        print('usage: /trace/directory pickle_target_file')
+    parser.add_argument('trace_directory',
-        exit(1)
+                        help='the path to the main CTF trace directory')
+    parser.add_argument('pickle_file',
+                        help='the target pickle file to generate')
+    args = parser.parse_args()
 
-    trace_directory = sys.argv[1]
+    trace_directory = args.trace_directory
-    pickle_target_file = sys.argv[2]
+    pickle_target_file = args.pickle_file
 
     with open(pickle_target_file, 'wb') as f:
         p = Pickler(f, protocol=4)

tracetools_analysis/process.py

@@ -1,18 +1,19 @@
 #!/usr/bin/env python3
 # Entrypoint/script to process events from a pickle file to build a ROS model
 
+import argparse
 import pickle
-import sys
 
 from tracetools_analysis.analysis import ros_processor, to_pandas
 
 
-def main(argv=sys.argv):
+def main():
-    if len(argv) != 2:
+    parser = argparse.ArgumentParser(description='Process a pickle file generated from tracing and analyze the data.')
-        print('usage: pickle_file')
+    parser.add_argument('pickle_file',
-        exit(1)
+                        help='the pickle file to import')
+    args = parser.parse_args()
 
-    pickle_filename = sys.argv[1]
+    pickle_filename = args.pickle_file
     with open(pickle_filename, 'rb') as f:
         events = _get_events_from_pickled_file(f)
         print(f'imported {len(events)} events')