add commit_id to Package

src/c3nav/api/serializers.py

@@ -16,7 +16,7 @@ class LevelSerializer(serializers.ModelSerializer):
 class PackageSerializer(serializers.ModelSerializer):
     class Meta:
         model = Package
-        fields = ('name', 'home_repo', 'depends', 'bounds')
+        fields = ('name', 'home_repo', 'commit_id', 'depends', 'bounds')
 
     def to_representation(self, obj):
         result = super().to_representation(obj)

src/c3nav/mapdata/migrations/0003_package_commit_id.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.1 on 2016-09-13 16:12
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mapdata', '0002_package_home_repo'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='package',
+            name='commit_id',
+            field=models.CharField(max_length=40, null=True, verbose_name='current commit id'),
+        ),
+    ]

src/c3nav/mapdata/models/package.py

@@ -12,6 +12,7 @@ class Package(models.Model):
                             help_text=_('e.g. de.c3nav.33c3.base'))
     depends = models.ManyToManyField('Package')
     home_repo = models.URLField(_('URL to the home git repository'), null=True)
+    commit_id = models.CharField(_('current commit id'), max_length=40, null=True)
 
     bottom = models.DecimalField(_('bottom coordinate'), null=True, max_digits=6, decimal_places=2)
     left = models.DecimalField(_('left coordinate'), null=True, max_digits=6, decimal_places=2)

src/c3nav/mapdata/packageio/read.py

@@ -1,5 +1,6 @@
 import json
 import os
+import subprocess
 
 from django.conf import settings
 from django.core.management.base import CommandError
@@ -34,6 +35,16 @@ def read_package(directory, objects=None):
         raise CommandError('no pkg.json found')
 
     package = Package.fromfile(package, directory)
+
+    try:
+        result = subprocess.Popen(['git', '-C', path, 'rev-parse', '--verify', 'HEAD'], stdout=subprocess.PIPE)
+        returncode = result.wait()
+    except:
+        pass
+    else:
+        if returncode == 0:
+            package['commit_id'] = result.stdout.read().strip()
+
     objects.add_package(package)
     objects.add_levels(_read_folder(package['name'], Level, os.path.join(path, 'levels')))
     objects.add_sources(_read_folder(package['name'], Source, os.path.join(path, 'sources'), check_sister_file=True))