[FR] Switch from git to dulwich (#4966)

* [FR] Switch from pure git to dulwich Fixes #4942

* fix lenght

* change length again

* change length again

InvenTree/InvenTree/version.py

@@ -3,17 +3,27 @@
 Provides information on the current InvenTree version
 """
 
+import datetime
 import os
+import pathlib
 import re
-import subprocess
 
 import django
 
+from dulwich.repo import NotGitRepository, Repo
+
 from .api_version import INVENTREE_API_VERSION
 
 # InvenTree software version
 INVENTREE_SW_VERSION = "0.12.0 dev"
 
+# Discover git
+try:
+    main_repo = Repo(pathlib.Path(__file__).parent.parent.parent)
+    main_commit = main_repo[main_repo.head()]
+except NotGitRepository:
+    main_commit = None
+
 
 def inventreeInstanceName():
     """Returns the InstanceName settings for the current database."""
@@ -93,30 +103,6 @@ def inventreeDjangoVersion():
     return django.get_version()
 
 
-git_available: bool = None  # is git available and used by the install?
-
-
-def check_for_git():
-    """Check if git is available on the install."""
-    global git_available
-
-    if git_available is not None:
-        return git_available
-
-    try:
-        subprocess.check_output('git --version'.split(), stderr=subprocess.DEVNULL)
-    except Exception:
-        git_available = False
-
-    if git_available is None:
-        try:
-            subprocess.check_output('git status'.split(), stderr=subprocess.DEVNULL)
-            git_available = True
-            return True
-        except Exception:
-            git_available = False
-
-
 def inventreeCommitHash():
     """Returns the git commit hash for the running codebase."""
     # First look in the environment variables, i.e. if running in docker
@@ -125,13 +111,9 @@ def inventreeCommitHash():
     if commit_hash:
         return commit_hash
 
-    if not check_for_git():
-        return None
-
-    try:
-        return str(subprocess.check_output('git rev-parse --short HEAD'.split()), 'utf-8').strip()
-    except Exception:  # pragma: no cover
+    if main_commit is None:
         return None
+    return main_commit.sha().hexdigest()[0:7]
 
 
 def inventreeCommitDate():
@@ -142,11 +124,6 @@ def inventreeCommitDate():
     if commit_date:
         return commit_date.split(' ')[0]
 
-    if not check_for_git():
-        return None
-
-    try:
-        d = str(subprocess.check_output('git show -s --format=%ci'.split()), 'utf-8').strip()
-        return d.split(' ')[0]
-    except Exception:  # pragma: no cover
+    if main_commit is None:
         return None
+    return str(datetime.datetime.fromtimestamp(main_commit.commit_time).date())

InvenTree/plugin/apps.py

@@ -7,13 +7,11 @@ The main code for plugin special sauce is in the plugin registry in `InvenTree/p
 import logging
 
 from django.apps import AppConfig
-from django.utils.translation import gettext_lazy as _
 
 from maintenance_mode.core import set_maintenance_mode
 
 from InvenTree.ready import canAppAccessDatabase
 from plugin import registry
-from plugin.helpers import check_git_version, log_error
 
 logger = logging.getLogger('inventree')
 
@@ -47,9 +45,3 @@ class PluginAppConfig(AppConfig):
                 # drop out of maintenance
                 # makes sure we did not have an error in reloading and maintenance is still active
                 set_maintenance_mode(False)
-
-        # check git version
-        registry.git_is_modern = check_git_version()
-
-        if not registry.git_is_modern:  # pragma: no cover  # simulating old git seems not worth it for coverage
-            log_error(_('Your environment has an outdated git version. This prevents InvenTree from loading plugin details.'), 'load')

InvenTree/plugin/helpers.py

@@ -1,10 +1,10 @@
 """Helpers for plugin app."""
 
+import datetime
 import inspect
 import logging
 import pathlib
 import pkgutil
-import subprocess
 import sysconfig
 import traceback
 from importlib.metadata import entry_points
@@ -14,6 +14,8 @@ from django.conf import settings
 from django.core.exceptions import AppRegistryNotReady
 from django.db.utils import IntegrityError
 
+from dulwich.repo import NotGitRepository, Repo
+
 logger = logging.getLogger('inventree')
 
 
@@ -109,20 +111,27 @@ def get_entrypoints():
 # region git-helpers
 def get_git_log(path):
     """Get dict with info of the last commit to file named in path."""
-    from plugin import registry
 
     output = None
-    if registry.git_is_modern:
     path = path.replace(str(settings.BASE_DIR.parent), '')[1:]
-        command = ['git', 'log', '-n', '1', "--pretty=format:'%H%n%aN%n%aE%n%aI%n%f%n%G?%n%GK'", '--follow', '--', path]
+
     try:
-            output = str(subprocess.check_output(command, cwd=settings.BASE_DIR.parent), 'utf-8')[1:-1]
-            if output:
-                output = output.split('\n')
-        except subprocess.CalledProcessError:  # pragma: no cover
+        walker = Repo.discover(path).get_walker(paths=[path.encode()], max_entries=1)
+        try:
+            commit = next(iter(walker)).commit
+        except StopIteration:
             pass
-        except FileNotFoundError:  # pragma: no cover
-            # Most likely the system does not have 'git' installed
+        else:
+            output = [
+                commit.sha().hexdigest(),
+                commit.author.decode().split('<')[0][:-1],
+                commit.author.decode().split('<')[1][:-1],
+                datetime.datetime.fromtimestamp(commit.author_time, ).isoformat(),
+                commit.message.decode().split('\n')[0],
+                'E',
+                None
+            ]
+    except NotGitRepository:
         pass
 
     if not output:
@@ -131,29 +140,6 @@ def get_git_log(path):
     return {'hash': output[0], 'author': output[1], 'mail': output[2], 'date': output[3], 'message': output[4], 'verified': output[5], 'key': output[6]}
 
 
-def check_git_version():
-    """Returns if the current git version supports modern features."""
-    # get version string
-    try:
-        output = str(subprocess.check_output(['git', '--version'], cwd=settings.BASE_DIR.parent), 'utf-8')
-    except subprocess.CalledProcessError:  # pragma: no cover
-        return False
-    except FileNotFoundError:  # pragma: no cover
-        # Most likely the system does not have 'git' installed
-        return False
-
-    # process version string
-    try:
-        version = output[12:-1].split(".")
-        if len(version) > 1 and version[0] == '2':
-            if len(version) > 2 and int(version[1]) >= 22:
-                return True
-    except ValueError:  # pragma: no cover
-        pass
-
-    return False  # pragma: no cover
-
-
 class GitStatus:
     """Class for resolving git gpg singing state."""
 

InvenTree/plugin/registry.py

@@ -60,7 +60,6 @@ class PluginsRegistry:
         # flags
         self.is_loading = False                                 # Are plugins being loaded right now
         self.apps_loading = True                                # Marks if apps were reloaded yet
-        self.git_is_modern = True                               # Is a modern version of git available
 
         self.installed_apps = []                                # Holds all added plugin_paths
 

requirements.in

@@ -28,6 +28,7 @@ django-user-sessions                    # user sessions in DB
 django-weasyprint                       # django weasyprint integration
 djangorestframework                     # DRF framework
 django-xforwardedfor-middleware         # IP forwarding metadata
+dulwich                                 # pure Python git integration
 drf-spectacular                         # DRF API documentation
 feedparser                              # RSS newsfeed parser
 gunicorn                                # Gunicorn web server

requirements.txt

@@ -140,6 +140,8 @@ djangorestframework==3.14.0
     #   drf-spectacular
 drf-spectacular==0.26.2
     # via -r requirements.in
+dulwich==0.21.5
+    # via -r requirements.in
 et-xmlfile==1.1.0
     # via openpyxl
 feedparser==6.0.10
@@ -279,6 +281,7 @@ uritemplate==4.1.1
     #   drf-spectacular
 urllib3==2.0.2
     # via
+    #   dulwich
     #   requests
     #   sentry-sdk
 wcwidth==0.2.6