run.py: Introduce metadata files for results

This commit adds metadata files to java matrix reports, allowing argus
to correctly collect each version separately.

Task: scylladb/argus#289

main.py

@@ -20,16 +20,15 @@ def main(java_driver_git, scylla_install_dir, tests, versions, driver_type,scyll
 
     for version in versions:
         logging.info("=== JAVA DRIVER VERSION %s ===", version)
-
-        try:
-            report = run.Run(
+        runner = run.Run(
                 java_driver_git=java_driver_git,
                 scylla_install_dir=scylla_install_dir,
                 tag=version,
                 tests=tests,
                 driver_type=driver_type,
-                scylla_version=scylla_version).run()
-
+                scylla_version=scylla_version)
+        try:
+            report = runner.run()
             logging.info("=== JAVA DRIVER MATRIX RESULTS FOR %s ===", version)
             logging.info(", ".join(f"{key}: {value}" for key, value in report.summary.items()))
             if report.is_failed:
@@ -42,7 +41,9 @@ def main(java_driver_git, scylla_install_dir, tests, versions, driver_type,scyll
             logging.exception(f"{version} failed")
             status = 1
             exc_type, exc_value, exc_traceback = sys.exc_info()
-            results[version] = dict(exception=traceback.format_exception(exc_type, exc_value, exc_traceback))
+            failure_reason = traceback.format_exception(exc_type, exc_value, exc_traceback)
+            results[version] = dict(exception=failure_reason)
+            runner.create_metadata_for_failure(reason="\n".join(failure_reason))
 
     if recipients:
         email_report = create_report(results=results)

run.py

@@ -1,3 +1,4 @@
+import json
 import logging
 import os
 import re
@@ -37,6 +38,10 @@ def _setup_out_dir(self):
             os.makedirs(xunit_dir)
         return xunit_dir
 
+    @property
+    def metadata_file_name(self) -> str:
+        return f'metadata_{self._tag}.json'
+
     @cached_property
     def version(self) -> str:
         version = self._tag
@@ -116,6 +121,15 @@ def _apply_patch_files(self) -> bool:
         if is_dir_empty:
             logging.warning("The '%s' directory does not contain any files", self.version_folder)
 
+    def create_metadata_for_failure(self, reason: str) -> None:
+        metadata_file = Path(os.path.dirname(__file__)) / "reports" / self.metadata_file_name
+        metadata = {
+            "driver_name": f"TEST-{self._tag}",
+            "driver_type": "java",
+            "failure_reason": reason,
+        }
+        metadata_file.write_text(json.dumps(metadata))
+
     def run(self) -> ProcessJUnit:
         self._run_command_in_shell("git checkout .")
         self._run_command_in_shell(f"git checkout {self._tag}")
@@ -153,9 +167,15 @@ def run(self) -> ProcessJUnit:
         except AssertionError:
             # Some tests are failed
             pass
-
+        metadata_file = Path(os.path.dirname(__file__)) / "reports" / self.metadata_file_name
+        metadata = {
+            "driver_name": f"TEST-{self._tag}",
+            "driver_type": "python",
+            "junit_result": f"./TEST-{self._tag}.xml",
+        }
         report = ProcessJUnit(
             new_report_xml_path=Path(os.path.dirname(__file__)) / "reports" / f"TEST-{self._tag}.xml",
             tests_result_path=self._report_path,
             tag=self._tag)
+        metadata_file.write_text(json.dumps(metadata))
         return report