Extend package discovery to support passive mechanisms #685
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The current implementation of package discovery follows one of two paths: 1. None of the extensions were specifically enabled via a command line argument, in which case all of the extensions are engaged. 2. Some subset of the extensions were given arguments, in which case the others are ignored and their discover() methods are not called. This change adds support for discovery extensions which do not expose command line arguments and cannot therefore be specifically enabled, and ensures that those extensions are always engaged. This is a non-breaking enhancement of the PackageDiscoveryExtensionPoint interface.
Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## master #685 +/- ##
==========================================
+ Coverage 87.28% 87.30% +0.01%
==========================================
Files 68 68
Lines 3949 3953 +4
Branches 760 761 +1
==========================================
+ Hits 3447 3451 +4
Misses 396 396
Partials 106 106 ☔ View full report in Codecov by Sentry. |
j-rivero
reviewed
Mar 6, 2025
| if has_parameter: | ||
| with_parameters[extension.PACKAGE_DISCOVERY_NAME] = extension | ||
| return with_parameters | ||
| if has_parameter is not None: |
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This nested conditions are hard to read for a newbie in the code like me.
We could go explicit on has_parameter accepted values:
diff --git a/colcon_core/package_discovery/__init__.py b/colcon_core/package_discovery/__init__.py
index 165d7d3..44a897c 100644
--- a/colcon_core/package_discovery/__init__.py
+++ b/colcon_core/package_discovery/__init__.py
@@ -236,13 +236,20 @@ def _get_extensions_with_parameters(
'Exception in package discovery extension '
f"'{extension.PACKAGE_DISCOVERY_NAME}': {e}\n{exc}")
# skip failing extension, continue with next one
+ continue
+
+ if has_parameter is True:
+ explicitly_specified = True
+ if has_parameter is False:
+ continue
+ elif has_parameter is None:
+ pass
else:
- if has_parameter is not None:
- if has_parameter:
- explicitly_specified = True
- else:
- continue
- with_parameters[extension.PACKAGE_DISCOVERY_NAME] = extension
+ assert 'has_parameter returned a value different of True, '\
+ 'False or None'
+
+ with_parameters[extension.PACKAGE_DISCOVERY_NAME] = extension
+
return with_parameters if explicitly_specified else OrderedDict() or in a more packed form:
--- a/colcon_core/package_discovery/__init__.py
+++ b/colcon_core/package_discovery/__init__.py
@@ -236,13 +236,15 @@ def _get_extensions_with_parameters(
'Exception in package discovery extension '
f"'{extension.PACKAGE_DISCOVERY_NAME}': {e}\n{exc}")
# skip failing extension, continue with next one
- else:
- if has_parameter is not None:
- if has_parameter:
- explicitly_specified = True
- else:
- continue
- with_parameters[extension.PACKAGE_DISCOVERY_NAME] = extension
+ continue
+
+ if has_parameter is False:
+ continue
+ elif has_parameter:
+ explicitly_specified = True
+
+ with_parameters[extension.PACKAGE_DISCOVERY_NAME] = extension
+
return with_parameters if explicitly_specified else OrderedDict()
j-rivero
reviewed
Mar 6, 2025
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The current implementation of package discovery follows one of two paths:
This change adds support for discovery extensions which do not expose command line arguments and cannot therefore be specifically enabled, and ensures that those extensions are always engaged.
This is a non-breaking enhancement of the PackageDiscoveryExtensionPoint interface.