1 files changed, 57 insertions, 0 deletions
diff --git a/testing/condprofile/condprof/changelog.py b/testing/condprofile/condprof/changelog.py
new file mode 100644
index 0000000000..39e3c8e194
--- /dev/null
+++ b/testing/condprofile/condprof/changelog.py
@@ -0,0 +1,57 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+# This module needs to stay Python 2 and 3 compatible
+#
+"""
+Maintains a unique file that lists all artifacts operations.
+"""
+from __future__ import absolute_import
+import os
+import json
+from datetime import datetime
+import sys
+
+
+# XXX we should do one per platform and use platform-changelog.json as a name
+class Changelog:
+    def __init__(self, archives_dir):
+        self.archives_dir = archives_dir
+        self.location = os.path.join(archives_dir, "changelog.json")
+        if os.path.exists(self.location):
+            with open(self.location) as f:
+                self._data = json.loads(f.read())
+                if "changes" not in self._data:
+                    self._data["changes"] = []
+        else:
+            self._data = {"changes": []}
+
+    def append(self, action, platform=sys.platform, **metadata):
+        now = datetime.timestamp(datetime.now())
+        log = {"action": action, "platform": platform, "when": now}
+        log.update(metadata)
+        # adding taskcluster specific info if we see it in the env
+        for key in (
+            "TC_SCHEDULER_ID",
+            "TASK_ID",
+            "TC_OWNER",
+            "TC_SOURCE",
+            "TC_PROJECT",
+        ):
+            if key in os.environ:
+                log[key] = os.environ[key]
+        self._data["changes"].append(log)
+
+    def save(self, archives_dir=None):
+        if archives_dir is not None and archives_dir != self.archives_dir:
+            self.location = os.path.join(archives_dir, "changelog.json")
+        # we need to resolve potential r/w conflicts on TC here
+        with open(self.location, "w") as f:
+            f.write(json.dumps(self._data))
+
+    def history(self):
+        """From older to newer"""
+        return sorted(
+            self._data["changes"], key=lambda entry: entry["when"], reverse=True
+        )