Remove stack traces when debug mode is not enabled

Author: sannya-singal

README.md

@@ -97,6 +97,7 @@ pip install https://github.com/boto/botocore/archive/v2.zip https://github.com/a
 
 ## Change Log
 
+* v0.23.0: Display full stack traces only in `--debug` mode; non-debug runs now show concise error messages, consistent with `awscli` behavior.
 * v0.22.0: Use fallback for endpoint detection. Should prevent most cases of `Unable to find LocalStack endpoint for service ...`
 * v0.21.1: Introducing semantic versioning and list of services without endpoints
 * v0.21: Use placeholder credentials and region only if Boto cannot not find them, fix output streaming for logs tail call

bin/awslocal

@@ -21,6 +21,7 @@ import os
 import sys
 import subprocess
 import re
+import traceback
 from threading import Thread
 
 from boto3.session import Session
@@ -44,6 +45,8 @@ def get_service():
         if not param.startswith('-'):
             return param
 
+def is_debug_mode():
+    return "--debug" in sys.argv
 
 def get_service_endpoint(localstack_host=None):
     service = get_service()
@@ -86,7 +89,14 @@ def main():
     try:
         import awscli.clidriver  # noqa: F401
     except Exception:
-        return run_as_separate_process()
+        try:
+            return run_as_separate_process()
+        except Exception as e:
+            if is_debug_mode():
+                traceback.print_exc()
+            else:
+                print(f"\n{e}")
+            sys.exit(1)
     patch_awscli_libs()
     run_in_process()
 

setup.py

@@ -16,7 +16,7 @@
 
     setup(
         name='awscli-local',
-        version='0.22.0',
+        version='0.23.0',
         description=description,
         long_description=README,
         long_description_content_type='text/markdown',