Add METADATA file to generated app

This update adds a METADATA file inside the plugins directory.
The app-gen-tool embedded with the stx-9 ISO was failing due
to pbr issues with the package version. Adding this METADATA
resolves the problem. Also updated the build method from
easy_install to build and corrected an error from the
"transform_rel_path_into_abs_path" function..

Test Plan:
PASS: app-gen-tool embbed with stx-9 now runs with
the --package-only flag without errors.

PASS: poc-starlingx-app application apply works
fine after the METADATA file being added.

Task: 50289
Story: 2010937
Change-Id: Iecdc5cc4770609a5f6be991568eec426ba59d0ac
Signed-off-by: Tomás N. P. Barros <tomas.barros@encora.com>

stx-app-generator/stx-app-generator/app_gen_tool/common.py

@@ -96,6 +96,8 @@ def get_chart_from_git(new_path: str, temp_dir: str, git_url: str, git_name: str
 
 def transform_rel_path_into_abs_path(abs_path: str, rel_path: str) -> str:
     """It transforms the rel_path into an absolute path"""
+    if rel_path[0] == '/':
+        return rel_path
     if rel_path[:2] == './':
         rel_path = rel_path.replace('./', 'app-gen-tool/')
     longest_common_path = ""

stx-app-generator/stx-app-generator/app_gen_tool/fluxcd.py

@@ -7,6 +7,7 @@ import yaml
 from app_gen_tool.application import Application
 from app_gen_tool.common import uppercase_name
 from app_gen_tool import constants
+from pbr.version import VersionInfo
 
 
 class FluxCD(Application):
@@ -178,6 +179,54 @@ class FluxCD(Application):
         if not os.path.exists(self._app['outputLifecycleDir']):
             os.makedirs(self._app['outputLifecycleDir'])
 
+    def _write_metadata_file(self):
+        """writes the METADATA file for the package"""
+        def split_and_format_value(value) -> str:
+            if isinstance(value, str):
+                return ''.join([f'\t{lin}\n' for lin in value.split('\n')])
+            else:
+                return ''.join([f'\t{lin}\n' for lin in value])
+
+        def expected_order(tup: tuple) -> int:
+            if tup[0] == 'name':
+                return 0
+            elif tup[0] == 'version':
+                return 1
+            elif tup[0] == 'summary':
+                return 2
+            else:
+                return 3
+
+        yml_data = self.plugin_setup
+        yml_data['metadata']['name'] = f'{self.APP_NAME}'
+        yml_data['metadata']['version'] = f'{VersionInfo(self.APP_NAME)}'
+        yml_data['metadata'][
+            'summary'
+        ] = f'StarlingX sysinv extensions for {self.APP_NAME}'
+        yml_data['metadata'] = dict(
+            sorted(yml_data['metadata'].items(), key=expected_order)
+        )
+
+        out = ''
+        for label in yml_data:
+            out += f'[{label}]\n'
+            for key, val in yml_data[label].items():
+                if label == 'metadata' and val is None:
+                    raise ValueError(f'You should\'ve written a value for: {key}')
+                elif not isinstance(val, list):
+                    out += f'{str(key).title()}: {val}\n'
+                else:
+                    out += f'{str(key).title()}:\n'
+                    out += split_and_format_value(val)
+            out += '\n'
+
+        out = out.replace('[metadata]\n', '')
+
+        with open(
+            f'{self._app["outputPluginDir"]}/METADATA', 'w', encoding='utf-8'
+        ) as f:
+            f.write(out)
+
     # Sub-process of app generation
     # generate application plugin files
     def _gen_plugins(self):
@@ -303,7 +352,7 @@ class FluxCD(Application):
         setup_py_file = os.path.join(plugin_dir, 'setup.py')
         file_content = (
             'import setuptools\n\nsetuptools.setup(\n    '
-            'setup_requires=["pbr>=2.0.0"],\n    pbr=True)'
+            'setup_requires=["pbr>=5.0.0"],\n    pbr=True)'
         )
 
         with open(setup_py_file, 'w', encoding='utf-8') as f:
@@ -318,6 +367,9 @@ class FluxCD(Application):
         directory = os.path.join(plugin_dir, appname)
         self.create_init_file(directory)
 
+        # Generate METADATA file
+        self._write_metadata_file()
+
         return True
 
     # Sub-process of app generation
@@ -335,17 +387,8 @@ class FluxCD(Application):
         os.makedirs(dirplugins, exist_ok=True)
         os.chdir(dirplugins)
 
-        command = [
-            'python3',
-            'setup.py',
-            'bdist_wheel',
-            '--universal',
-            '-d',
-            '.',
-        ]
-
         try:
-            subprocess.call(command, stderr=subprocess.STDOUT)
+            subprocess.run(["python3 -m build"], shell=True)
         except Exception:
             return False
 

stx-app-generator/stx-app-generator/requirements.txt

@@ -1,2 +1,3 @@
 pyyaml==6.0.1
-wheel==0.41.2
+wheel==0.41.2
+build==1.2.1

stx-app-generator/stx-app-generator/setup.py

@@ -36,7 +36,7 @@ setup(
             f'{PACKAGE_NAME} = {PACKAGE_DIRECTORY}.cmd.generator:main',
         ],
     },
-    setup_requires=['pbr>=0.5'],
+    setup_requires=['pbr>=5.0.0'],
     pbr=True,
     packages=find_packages(),
     include_package_data=True,

stx-app-generator/stx-app-generator/tests/unit/test_application_class.py

@@ -2,7 +2,7 @@
 import git
 import os
 import shutil
-import glob
+import fnmatch
 
 
 from app_gen_tool.common import get_chart_from_git
@@ -178,7 +178,11 @@ class TestFluxCDAppGen:
 
         FluxCD._gen_plugin_wheels(app)
 
-        output_file = os.path.join(self.OUTPUT_FOLDER, "plugins", "*.whl")
-        file_exists = glob.glob(output_file, recursive = True)
+        output_dir = os.path.join(self.OUTPUT_FOLDER, "plugins")
+        file_exists = False
+        for root, dirs, files in os.walk(output_dir):
+            for file in files:
+                if fnmatch.fnmatch(file, '*.whl'):
+                    return True
 
         assert file_exists

test-requirements.txt

@@ -1,6 +1,7 @@
 hacking>=1.1.0,<=2.0.0 # Apache-2.0
-bashate >= 0.2
-PyYAML >= 3.1.0
+bashate>=0.2
+build==1.2.1
+PyYAML>=3.1.0
 shellcheck-py;python_version>="3.0" # MIT
 yamllint<1.26.1;python_version>="3.0" # GPLv2
 pylint