VMimage get --debug option

avocado/plugins/vmimage.py

@@ -3,7 +3,7 @@
 import re
 
 from avocado.core import exit_codes, output
-from avocado.core.output import LOG_UI
+from avocado.core.output import LOG_UI, add_log_handler
 from avocado.core.plugin_interfaces import CLICmd
 from avocado.core.settings import settings
 from avocado.utils import astring, vmimage
@@ -70,7 +70,7 @@
     :rtype: dict
     """
     cache_dir = settings.as_dict().get("datadir.paths.cache_dirs")[0]
-    image_info = vmimage.get(
+    image_info = vmimage.Image.from_parameters(
         name=distro, version=version, arch=arch, cache_dir=cache_dir
     )
     file_path = image_info.base_image
@@ -155,6 +155,17 @@
             long_arg="--arch",
         )
 
+        help_msg = "More information about failures"
+        settings.register_option(
+            section="vmimage.get",
+            key="debug",
+            default=False,
+            help_msg=help_msg,
+            key_type=bool,
+            parser=get_parser,
+            long_arg="--debug",
+        )
+
     def run(self, config):
         subcommand = config.get("vmimage_subcommand")
         if subcommand == "list":
@@ -164,6 +175,9 @@
             name = config.get("vmimage.get.distro")
             version = config.get("vmimage.get.version")
             arch = config.get("vmimage.get.arch")
+            debug = config.get("vmimage.get.debug")
+            if debug:
+                add_log_handler(vmimage.LOG)
             try:
                 image = download_image(name, version, arch)
             except AttributeError:

avocado/utils/vmimage.py

@@ -16,6 +16,7 @@
 Provides VM images acquired from official repositories
 """
 
+import logging
 import os
 import re
 import tempfile
@@ -29,6 +30,8 @@
 from avocado.utils import path as utils_path
 from avocado.utils import process
 
+LOG = logging.getLogger(__name__)
+
 # pylint: disable=C0401
 #: The "qemu-img" binary used when creating the snapshot images.  If
 #: set to None (the default), it will attempt to find a suitable binary
@@ -114,7 +117,7 @@
             data = urlopen(url).read()
             parser.feed(astring.to_text(data, self.HTML_ENCODING))
         except HTTPError as exc:
-            raise ImageProviderError(f"Cannot open {self.url_versions}") from exc
+            raise ImageProviderError(f"Cannot open {url}") from exc
 
     @staticmethod
     def get_best_version(versions):
@@ -670,8 +673,8 @@
                 cache_dir=cache_dir,
                 snapshot_dir=snapshot_dir,
             )
-        except ImageProviderError:
-            pass
+        except ImageProviderError as e:
+            LOG.debug(e)
 
         raise AttributeError("Provider not available")
 
@@ -726,9 +729,10 @@
         if name is None or name == provider.name.lower():
             try:
                 return provider(**provider_args)
-            except ImageProviderError:
-                pass
+            except ImageProviderError as e:
+                LOG.debug(e)
 
+    LOG.debug("Provider for %s not available", name)
     raise AttributeError("Provider not available")
 
 

selftests/check.py

@@ -29,7 +29,7 @@
     "nrunner-requirement": 28,
     "unit": 678,
     "jobs": 11,
-    "functional-parallel": 313,
+    "functional-parallel": 314,
     "functional-serial": 7,
     "optional-plugins": 0,
     "optional-plugins-golang": 2,

selftests/functional/plugin/vmimage.py

@@ -81,6 +81,17 @@ def test_list_images(self):
         result = process.run(cmd_line)
         self.assertIn(expected_output, result.stdout_text)
 
+    def test_get_debug(self):
+        cmd_line = (
+            f"{AVOCADO} --config {self.config_file.name} vmimage "
+            f"get --debug --distro=SHOULD_NEVER_EXIST --arch zzz_64"
+        )
+        result = process.run(cmd_line, ignore_status=True)
+        self.assertEqual(result.exit_status, exit_codes.AVOCADO_FAIL)
+        self.assertIn(
+            "Provider for should_never_exist not available", result.stdout_text
+        )
+
     def tearDown(self):
         self.base_dir.cleanup()