support use of glob patterns for paths to files with external modules metadata

Author: boegel

easybuild/tools/options.py

@@ -1471,14 +1471,25 @@ def parse_external_modules_metadata(cfgs):
     """
     Parse metadata for external modules.
 
-    :param cfgs: list of config files providing metadata for external modules
+    :param cfgs: list of (glob patterns for) paths to config files providing metadata for external modules
     :return: parsed metadata for external modules
     """
+    if cfgs is None:
+        cfgs = []
+
+    # expand glob patterns, and report error for faulty paths
+    paths = []
+    for cfg in cfgs:
+        res = glob.glob(cfg)
+        if res:
+            paths.extend(res)
+        else:
+            # if there are no matches, we report an error to avoid silently ignores faulty paths
+            raise EasyBuildError("Specified path for file with external modules metadata does not exist: %s", cfg)
+    cfgs = paths
 
     # use external modules metadata configuration files that are available by default, unless others are specified
     if not cfgs:
-        cfgs = []
-
         # we expect to find *external_modules_metadata.cfg files in etc/ on same level as easybuild/framework
         topdirs = [os.path.dirname(os.path.dirname(os.path.dirname(__file__)))]
 
@@ -1502,14 +1513,11 @@ def parse_external_modules_metadata(cfgs):
 
     parsed_metadata = ConfigObj()
     for cfg in cfgs:
-        if os.path.isfile(cfg):
-            _log.debug("Parsing %s with external modules metadata", cfg)
-            try:
-                parsed_metadata.merge(ConfigObj(cfg))
-            except ConfigObjError as err:
-                raise EasyBuildError("Failed to parse %s with external modules metadata: %s", cfg, err)
-        else:
-            raise EasyBuildError("Specified path for file with external modules metadata does not exist: %s", cfg)
+        _log.debug("Parsing %s with external modules metadata", cfg)
+        try:
+            parsed_metadata.merge(ConfigObj(cfg))
+        except ConfigObjError as err:
+            raise EasyBuildError("Failed to parse %s with external modules metadata: %s", cfg, err)
 
     # make sure name/version values are always lists, make sure they're equal length
     for mod, entry in parsed_metadata.items():

test/framework/options.py

@@ -3544,6 +3544,33 @@ def test_parse_external_modules_metadata(self):
         err_msg = "Different length for lists of names/versions in metadata for external module"
         self.assertErrorRegex(EasyBuildError, err_msg, parse_external_modules_metadata, [testcfg])
 
+        # if path to non-existing file is used, an error is reported
+        doesnotexist = os.path.join(self.test_prefix, 'doesnotexist')
+        error_pattern = "Specified path for file with external modules metadata does not exist"
+        self.assertErrorRegex(EasyBuildError, error_pattern, parse_external_modules_metadata, [doesnotexist])
+
+        # glob pattern can be used to specify file locations to parse_external_modules_metadata
+        cfg1 = os.path.join(self.test_prefix, 'cfg_one.ini')
+        write_file(cfg1, '\n'.join(['[one/1.0]', 'name = one', 'version = 1.0']))
+        cfg2 = os.path.join(self.test_prefix, 'cfg_two.ini')
+        write_file(cfg2, '\n'.join([
+            '[two/2.0]', 'name = two', 'version = 2.0',
+            '[two/2.1]', 'name = two', 'version = 2.1',
+        ]))
+        cfg3 = os.path.join(self.test_prefix, 'cfg3.ini')
+        write_file(cfg3, '\n'.join(['[three/3.0]', 'name = three', 'version = 3.0']))
+        cfg4 = os.path.join(self.test_prefix, 'cfg_more.ini')
+        write_file(cfg4, '\n'.join(['[one/1.2.3]', 'name = one', 'version = 1.2.3', 'prefix = /one/1.2.3/']))
+
+        metadata = parse_external_modules_metadata([os.path.join(self.test_prefix, 'cfg*.ini')])
+
+        self.assertEqual(sorted(metadata.keys()), ['one/1.0', 'one/1.2.3', 'three/3.0', 'two/2.0', 'two/2.1'])
+        self.assertEqual(metadata['one/1.0'], {'name': ['one'], 'version': ['1.0']})
+        self.assertEqual(metadata['one/1.2.3'], {'name': ['one'], 'version': ['1.2.3'], 'prefix': '/one/1.2.3/'})
+        self.assertEqual(metadata['two/2.0'], {'name': ['two'], 'version': ['2.0']})
+        self.assertEqual(metadata['two/2.1'], {'name': ['two'], 'version': ['2.1']})
+        self.assertEqual(metadata['three/3.0'], {'name': ['three'], 'version': ['3.0']})
+
     def test_zip_logs(self):
         """Test use of --zip-logs"""