[FEATURE][KED-2577] Adds DeprecationWarning to Journal constructor (k…

…edro-org#1076)

RELEASE.md

@@ -26,6 +26,7 @@ print(pipelines["__default__"])  # pipeline loading is only triggered here
 * Fixed error when using starter on Windows with Python 3.7 (Issue [#722](https://github.com/quantumblacklabs/kedro/issues/722))
 * Fixed decoding error of config file that contains accented characters by opening config files for reading in UTF-8.
 * Fixed an issue where `after_dataset_loaded` run would finish before a dataset is actually loaded when using `--async` flag.
+* Added `DeprecationWarning` to `kedro.versioning.journal.Journal` as it will be removed in release 0.18.0.
 
 ## Minor breaking changes to the API
 

kedro/versioning/journal.py

@@ -30,6 +30,7 @@
 import json
 import logging
 import subprocess
+import warnings
 from pathlib import Path
 from typing import Any, Dict, Mapping, Optional, Union
 
@@ -47,8 +48,16 @@ def __init__(self, record_data: Dict[str, Any]):
 
         Args:
             record_data: JSON serializable dictionary specific to project context.
-
+        Raises:
+            DeprecationWarning
         """
+        warnings.warn(
+            "`Journal` is now deprecated and will be removed in Kedro 0.18.0."
+            "For more information, please visit "
+            "https://github.com/quantumblacklabs/kedro/blob/master/RELEASE.md",
+            DeprecationWarning,
+        )
+
         self.run_id = record_data["run_id"]
         record_data["git_sha"] = _git_sha(record_data["project_path"])
         self._log_journal("ContextJournalRecord", record_data)

tests/versioning/test_journal.py

@@ -110,6 +110,11 @@ def test_log_catalog(self, tmp_path):
             assert catalog_log["version"] == "fake_version"
             assert catalog_log["run_id"] == context_log["run_id"]
 
+    def test_deprecation_warning(self, tmp_path):
+        record_data = {"run_id": "fake_id", "project_path": str(tmp_path)}
+        with pytest.warns(DeprecationWarning):
+            Journal(record_data)
+
 
 def test_git_sha(tmp_path, mocker):
     mocker.patch("subprocess.check_output", return_value="mocked_return".encode())