Add error handler for http connection

Signed-off-by: Hiroshi Miura <miurahr@linux.com>

aqt/archives.py

@@ -20,8 +20,11 @@
 # IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-import xml.etree.ElementTree as ElementTree
+import logging
 import requests
+import traceback
+import xml.etree.ElementTree as ElementTree
+from six import StringIO
 
 
 class QtPackage:
@@ -65,7 +68,15 @@ class QtArchives:
 
         # Get packages index
         update_xml_url = "{0}Updates.xml".format(archive_url)
+        try:
             r = requests.get(update_xml_url)
+        except requests.exceptions.ConnectionError as e:
+            print("Caught download error: %s" % e.args)
+            exc_buffer = StringIO()
+            traceback.print_exc(file=exc_buffer)
+            logging.error('Download error:\n%s', exc_buffer.getvalue())
+            raise e
+        else:
             self.update_xml = ElementTree.fromstring(r.text)
             for packageupdate in self.update_xml.iter("PackageUpdate"):
                 name = packageupdate.find("Name").text

aqt/installer.py

@@ -20,17 +20,19 @@
 # IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+import logging
 import os
 import platform
 import sys
-from multiprocessing.dummy import Pool
+import traceback
 import requests
+from six import StringIO
+from multiprocessing.dummy import Pool
 if sys.version_info.major == 3:
     from subprocess import run
 else:
     from subprocess import call as run
 
-
 NUM_PROCESS = 3
 
 
@@ -44,7 +46,15 @@ class QtInstaller:
         url = package.get_url()
         sys.stdout.write("\033[K")
         print("-Downloading {}...".format(url))
+        try:
             r = requests.get(url, stream=True)
+        except requests.exceptions.ConnectionError as e:
+            print("Caught download error: %s" % e.args)
+            exc_buffer = StringIO()
+            traceback.print_exc(file=exc_buffer)
+            logging.error('Uncaught exception in worker process:\n%s', exc_buffer.getvalue())
+            raise e
+        else:
             with open(archive, 'wb') as fd:
                 for chunk in r.iter_content(chunk_size=8196):
                     fd.write(chunk)
@@ -92,5 +102,9 @@ class QtInstaller:
                     if 'QT_EDITION' in line:
                         line = 'QT_EDITION = OpenSource'
                     f.write(line)
-        except IOError:
+        except IOError as e:
-            pass
+            print("Configuration file generation error: %s" % e.args)
+            exc_buffer = StringIO()
+            traceback.print_exc(file=exc_buffer)
+            logging.error('Error happened when writing configuration files:\n%s', exc_buffer.getvalue())
+            raise e

setup.py

@@ -20,7 +20,7 @@ setup(name='aqtinstall',
       author='Hioshi Miura',
       author_email='miurahr@linux.com',
       packages=["aqt"],
-      install_requires=['requests'],
+      install_requires=['requests', 'six'],
       extras_require={
         'dev': [
             'pytest',