Add import linter task (#227)

---------
Co-authored-by: Nicola Coretti <nicola.coretti@exasol.com>

Author: Jannis-Mittenzwei

.gitattributes

@@ -0,0 +1 @@
+poetry.lock linguist-generated=true

.import_linter_config

@@ -0,0 +1,2 @@
+[importlinter]
+root_package = exasol.toolbox

doc/changes/unreleased.md

@@ -5,6 +5,7 @@
 * Fixed the issue with publishing new documentation after releasing a new version
 ## ✨ Added
 
+* #149: Added nox task to lint imports
 * Added support to manually trigger documentation build
 * #248: Added security results to workflow summary
 * #233: Added nox task to verify dependency declarations

doc/developer_guide/modules/modules.rst

@@ -6,5 +6,6 @@ Modules
 
     sphinx/sphinx
     nox
+    nox_tasks
     pre_commit_hooks
 

doc/developer_guide/modules/nox.rst

@@ -1,5 +1,6 @@
 nox
 ===
+
 The nox package contains nox related functionalities like pre defined nox tasks.
 
 .. figure:: ../../_static/nothing-to-see-here.png

doc/developer_guide/modules/nox_tasks.rst

@@ -0,0 +1,15 @@
+nox_tasks
+=========
+
+lint:import (experimental)
+__________________________
+
+`Import Linter <https://import-linter.readthedocs.io/en/stable/readme.html>`_
+allows you to define and enforce rules for the imports within and between Python packages.
+
+.. important::
+
+    First configure the linter in file :code:`.import_linter_config`, see
+    `import-linter top-level-configuration <https://import-linter.readthedocs.io/en/stable/usage.html#top-level-configuration>`_
+    and `import-linter contract types <https://import-linter.readthedocs.io/en/stable/contract_types.html>`_
+

doc/developer_guide/modules/pre_commit_hooks.rst

@@ -1,5 +1,6 @@
 pre_commit_hooks
 =================
+
 In the pre_commit_hook package contains git commit hooks and similar functionalities.
 
 .. figure:: ../../_static/nothing-to-see-here.png

exasol/toolbox/nox/_lint.py

@@ -1,22 +1,22 @@
 from __future__ import annotations
 
+import argparse
+import sys
+from pathlib import Path
 from typing import (
+    Dict,
     Iterable,
     List,
-    Dict
 )
 
 import nox
+import rich.console
+import tomlkit
 from nox import Session
 
 from exasol.toolbox.nox._shared import python_files
 from noxconfig import PROJECT_CONFIG
 
-from pathlib import Path
-import rich.console
-import tomlkit
-import sys
-
 
 def _pylint(session: Session, files: Iterable[str]) -> None:
     session.run(
@@ -74,27 +74,28 @@ def _security_lint(session: Session, files: Iterable[str]) -> None:
     )
 
 
+def _import_lint(session: Session, path: Path) -> None:
+    session.run("poetry", "run", "lint-imports", "--config", path)
+
+
 class Dependencies:
-    def __init__(self, illegal: Dict[str, List[str]] | None):
+    def __init__(self, illegal: dict[str, list[str]] | None):
         self._illegal = illegal or {}
 
     @staticmethod
-    def parse(pyproject_toml: str) -> "Dependencies":
+    def parse(pyproject_toml: str) -> Dependencies:
         def _source_filter(version) -> bool:
-            ILLEGAL_SPECIFIERS = ['url', 'git', 'path']
-            return any(
-                specifier in version
-                for specifier in ILLEGAL_SPECIFIERS
-            )
+            ILLEGAL_SPECIFIERS = ["url", "git", "path"]
+            return any(specifier in version for specifier in ILLEGAL_SPECIFIERS)
 
-        def find_illegal(part) -> List[str]:
+        def find_illegal(part) -> list[str]:
             return [
                 f"{name} = {version}"
                 for name, version in part.items()
                 if _source_filter(version)
             ]
 
-        illegal: Dict[str, List[str]] = {}
+        illegal: dict[str, list[str]] = {}
         toml = tomlkit.loads(pyproject_toml)
         poetry = toml.get("tool", {}).get("poetry", {})
 
@@ -114,11 +115,11 @@ def find_illegal(part) -> List[str]:
         return Dependencies(illegal)
 
     @property
-    def illegal(self) -> Dict[str, List[str]]:
+    def illegal(self) -> dict[str, list[str]]:
         return self._illegal
 
 
-def report_illegal(illegal: Dict[str, List[str]], console: rich.console.Console):
+def report_illegal(illegal: dict[str, list[str]], console: rich.console.Console):
     count = sum(len(deps) for deps in illegal.values())
     suffix = "y" if count == 1 else "ies"
     console.print(f"{count} illegal dependenc{suffix}\n", style="red")
@@ -158,4 +159,35 @@ def dependency_check(session: Session) -> None:
     console = rich.console.Console()
     if illegal := dependencies.illegal:
         report_illegal(illegal, console)
-        sys.exit(1)
+        sys.exit(1)
+
+
+@nox.session(name="lint:import", python=False)
+def import_lint(session: Session) -> None:
+    """(experimental) Runs import linter on the project"""
+    parser = argparse.ArgumentParser(
+        usage="nox -s import-lint -- [options]",
+        description="Runs the import linter on the project",
+    )
+    parser.add_argument(
+        "-c",
+        "--config",
+        type=str,
+        help="path to the configuration file for the importlinter",
+        metavar="TEXT",
+    )
+
+    args: argparse.Namespace = parser.parse_args(args=session.posargs)
+    file: str = args.config
+    path: Path | None = None
+    if file is None:
+        path = getattr(
+            PROJECT_CONFIG, "import_linter_config", Path(".import_linter_config")
+        )
+    else:
+        path = Path(file)
+    if not path.exists():
+        session.error(
+            "Please make sure you have a configuration file for the importlinter"
+        )
+    _import_lint(session=session, path=path)

exasol/toolbox/tools/security.py

@@ -11,13 +11,14 @@
 from enum import Enum
 from functools import partial
 from inspect import cleandoc
+from pathlib import Path
 from typing import (
     Generator,
     Iterable,
     Tuple,
 )
+
 import typer
-from pathlib import Path
 
 stdout = print
 stderr = partial(print, file=sys.stderr)
@@ -128,14 +129,16 @@ def from_json(report_str: str, prefix: Path) -> Iterable[SecurityIssue]:
             cwe=str(issue["issue_cwe"].get("id", "")),
             test_id=issue["test_id"],
             description=issue["issue_text"],
-            references=tuple(references)
+            references=tuple(references),
         )
 
 
 def issues_to_markdown(issues: Iterable[SecurityIssue]) -> str:
-    template = cleandoc("""
+    template = cleandoc(
+        """
         {header}{rows}
-    """)
+    """
+    )
 
     def _header():
         header = "# Security\n\n"
@@ -153,10 +156,7 @@ def _row(issue):
         row = row[:-5] + "|"
         return row
 
-    return template.format(
-        header=_header(),
-        rows="\n".join(_row(i) for i in issues)
-    )
+    return template.format(header=_header(), rows="\n".join(_row(i) for i in issues))
 
 
 def security_issue_title(issue: Issue) -> str:
@@ -217,6 +217,7 @@ def create_security_issue(issue: Issue, project="") -> Tuple[str, str]:
 CVE_CLI = typer.Typer()
 CLI.add_typer(CVE_CLI, name="cve", help="Work with CVE's")
 
+
 class Format(str, Enum):
     Maven = "maven"
 
@@ -320,8 +321,10 @@ class PPrintFormats(str, Enum):
 
 @CLI.command(name="pretty-print")
 def json_issue_to_markdown(
-        json_file: typer.FileText = typer.Argument(mode="r", help="json file with issues to convert"),
-        path: Path = typer.Argument(default=Path("."), help="path to project root")
+    json_file: typer.FileText = typer.Argument(
+        mode="r", help="json file with issues to convert"
+    ),
+    path: Path = typer.Argument(default=Path("."), help="path to project root"),
 ) -> None:
     content = json_file.read()
     issues = from_json(content, path.absolute())

noxconfig.py

@@ -35,6 +35,7 @@ class Config:
 
     root: Path = Path(__file__).parent
     doc: Path = Path(__file__).parent / "doc"
+    importlinter: Path = Path(__file__).parent / ".import_linter_config"
     version_file: Path = Path(__file__).parent / "exasol" / "toolbox" / "version.py"
     path_filters: Iterable[str] = (
         "dist",