#580: Fixed Nox session release:prepare for multi-project repositories (#584)

* #580: Fixed Nox session release:prepare for multi-project repositories

Co-authored-by: Ariel Schulz <43442541+ArBridgeman@users.noreply.github.com>

Author: ckunki

doc/changes/unreleased.md

@@ -1,5 +1,13 @@
 # Unreleased
 
+## Summary
+
+This releases fixes Nox session `release:prepare` for multi-project repositories.
+
+## Bugfixes
+
+* #580: Fixed Nox session `release:prepare` for multi-project repositories
+
 ## Features
 
 * #485: Improved nox task `release:trigger`

exasol/toolbox/util/dependencies/poetry_dependencies.py

@@ -18,6 +18,7 @@
     Package,
 )
 from exasol.toolbox.util.git import Git
+from noxconfig import PROJECT_CONFIG
 
 
 class PoetryGroup(BaseModel):
@@ -82,6 +83,12 @@ def groups(self) -> tuple[PoetryGroup, ...]:
         return tuple(groups)
 
 
+def run_command(*args: str, cwd: Path | None = None) -> subprocess.CompletedProcess:
+    return subprocess.run(
+        args, capture_output=True, text=True, cwd=cwd, check=True
+    )  # nosec: B603 - risk of untrusted input for subprocess call is accepted
+
+
 class PoetryDependencies(BaseModel):
     groups: tuple[PoetryGroup, ...]
     working_directory: Path
@@ -111,44 +118,34 @@ def direct_dependencies(
     ) -> OrderedDict[str, dict[NormalizedPackageStr, Package]]:
         dependencies = OrderedDict()
         for group in self.groups:
-            command = (
+            proc = run_command(
                 "poetry",
                 "show",
                 "--top-level",
                 f"--only={group.name}",
                 "--no-truncate",
-            )
-            output = subprocess.run(
-                command,
-                capture_output=True,
-                text=True,
                 cwd=self.working_directory,
-                check=True,
             )
-            result = self._extract_from_poetry_show(output_text=output.stdout)
+            result = self._extract_from_poetry_show(output_text=proc.stdout)
             dependencies[group.name] = result
         return dependencies
 
     @property
     def all_dependencies(self) -> OrderedDict[str, dict[NormalizedPackageStr, Package]]:
-        command = ("poetry", "show", "--no-truncate")
-        output = subprocess.run(
-            command,
-            capture_output=True,
-            text=True,
+        proc = run_command(
+            "poetry",
+            "show",
+            "--no-truncate",
             cwd=self.working_directory,
-            check=True,
         )
-
         direct_dependencies = self.direct_dependencies.copy()
-
         transitive_dependencies = {}
         names_direct_dependencies = {
             package_name
             for group_list in direct_dependencies
             for package_name in group_list
         }
-        for line in output.stdout.splitlines():
+        for line in proc.stdout.splitlines():
             dep = self._extract_from_line(line=line)
             if dep and dep.name not in names_direct_dependencies:
                 transitive_dependencies[dep.normalized_name] = dep
@@ -169,10 +166,9 @@ def get_dependencies_from_latest_tag() -> (
     OrderedDict[str, dict[NormalizedPackageStr, Package]]
 ):
     latest_tag = Git.get_latest_tag()
-    with tempfile.TemporaryDirectory() as path:
-        tmpdir = Path(path)
-
-        Git.copy_remote_file_locally(latest_tag, "poetry.lock", tmpdir)
-        Git.copy_remote_file_locally(latest_tag, PYPROJECT_TOML, tmpdir)
-
+    path = PROJECT_CONFIG.root.relative_to(Git.toplevel())
+    with tempfile.TemporaryDirectory() as tmpdir_str:
+        tmpdir = Path(tmpdir_str)
+        for file in ("poetry.lock", PYPROJECT_TOML):
+            Git.checkout(latest_tag, path / file, tmpdir / file)
         return get_dependencies(working_directory=tmpdir)

exasol/toolbox/util/git.py

@@ -1,6 +1,7 @@
 import subprocess  # nosec
 from functools import wraps
 from pathlib import Path
+from typing import Union
 
 
 def run_command(func):
@@ -26,25 +27,28 @@ def get_latest_tag():
 
     @staticmethod
     @run_command
-    def read_file_from_tag(tag: str, remote_file: str):
+    def read_file_from_tag(tag: str, path: Union[Path, str]):
         """
-        Read the contents of the specified file `remote_file` at the point in time
-        specified by git tag `tag`.
+        Read the contents of the specified file `path` at the point in
+        time specified by git tag `tag`.
         """
-        return ["git", "cat-file", "blob", f"{tag}:{remote_file}"]
+        return ["git", "cat-file", "blob", f"{tag}:{path}"]
 
     @staticmethod
-    def copy_remote_file_locally(
-        tag: str, remote_file: str, destination_directory: Path
-    ) -> None:
+    def checkout(tag: str, source: Path, dest: Path) -> None:
         """
-        Copy the contents of the specified file `remote_file` at the point in time
-        specified by git tag `tag` and copy it into the local `destination_directory/remote_file`.
+        Copy the specified file `source` at the point in time specified by
+        git tag `tag` to file `dest` within the local filesystem.
         """
-        contents = Git.read_file_from_tag(tag=tag, remote_file=remote_file)
-        (destination_directory / remote_file).write_text(contents)
+        contents = Git.read_file_from_tag(tag=tag, path=source)
+        dest.write_text(contents)
 
     @staticmethod
     @run_command
     def create_and_switch_to_branch(branch_name: str):
         return ["git", "switch", "-c", branch_name]
+
+    @staticmethod
+    @run_command
+    def toplevel():
+        return ["git", "rev-parse", "--show-toplevel"]

test/unit/util/git_test.py

@@ -13,7 +13,7 @@ def latest_tag() -> str:
 
 @pytest.fixture(scope="module")
 def read_file_from_tag(latest_tag) -> str:
-    return Git.read_file_from_tag(tag=latest_tag, remote_file=POETRY_LOCK)
+    return Git.read_file_from_tag(tag=latest_tag, path=POETRY_LOCK)
 
 
 class TestGit:
@@ -28,12 +28,9 @@ def test_read_file_from_tag(read_file_from_tag):
         assert read_file_from_tag != ""
 
     @staticmethod
-    def test_copy_remote_file_locally(tmp_path, read_file_from_tag):
-        latest_tag = Git.get_latest_tag()
-
-        Git.copy_remote_file_locally(
-            tag=latest_tag, remote_file=POETRY_LOCK, destination_directory=tmp_path
-        )
-
-        result = (tmp_path / POETRY_LOCK).read_text()
+    def test_checkout(tmp_path, read_file_from_tag):
+        tag = Git.get_latest_tag()
+        dest = tmp_path / POETRY_LOCK
+        Git.checkout(tag=tag, source=POETRY_LOCK, dest=dest)
+        result = dest.read_text()
         assert result == read_file_from_tag