Add RRD-related models

4 files changed, 131 insertions, 2 deletions

diff --git a/rrd/admin.py b/rrd/admin.py
index 8c38f3f..d83650b 100644
--- a/rrd/admin.py
+++ b/rrd/admin.py
@@ -1,3 +1,8 @@
 from django.contrib import admin
 
+from . import models
+
 # Register your models here.
+admin.site.register(models.DataSource)
+admin.site.register(models.Graph)
+admin.site.register(models.Dashboard)
diff --git a/rrd/apps.py b/rrd/apps.py
index ef97edc..61733ba 100644
--- a/rrd/apps.py
+++ b/rrd/apps.py
@@ -1,6 +1,6 @@
 from django.apps import AppConfig
 
 
-class RrdConfig(AppConfig):
+class RRDConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
     name = 'rrd'
diff --git a/rrd/migrations/0001_initial.py b/rrd/migrations/0001_initial.py
new file mode 100644
index 0000000..c4bbee8
--- /dev/null
+++ b/rrd/migrations/0001_initial.py
@@ -0,0 +1,69 @@
+# Generated by Django 3.2.21 on 2023-12-08 13:48
+
+from django.conf import settings
+from django.db import migrations, models
+import pathlib
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('auth', '0012_alter_user_first_name_max_length'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='DataSource',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('topic', models.CharField(max_length=512)),
+                ('path', models.FilePathField(max_length=512, path=pathlib.PurePosixPath('/home/valhalla/projects/software/kerbana/django-kerbana/../data/rrd'), recursive=True)),
+                ('rrd_config', models.TextField()),
+                ('active', models.BooleanField(default=True)),
+                ('groups_read', models.ManyToManyField(related_name='datasource_read', to='auth.Group')),
+                ('groups_write', models.ManyToManyField(related_name='datasource_write', to='auth.Group')),
+                ('users_read', models.ManyToManyField(related_name='datasource_read', to=settings.AUTH_USER_MODEL)),
+                ('users_write', models.ManyToManyField(related_name='datasource_write', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+        migrations.CreateModel(
+            name='Graph',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=64)),
+                ('path', models.FilePathField(max_length=512, path=pathlib.PurePosixPath('/home/valhalla/projects/software/kerbana/django-kerbana/../data/graph'), recursive=True)),
+                ('rrd_config', models.TextField()),
+                ('data_sources', models.ManyToManyField(to='rrd.DataSource')),
+                ('groups_read', models.ManyToManyField(related_name='graph_read', to='auth.Group')),
+                ('groups_write', models.ManyToManyField(related_name='graph_write', to='auth.Group')),
+                ('users_read', models.ManyToManyField(related_name='graph_read', to=settings.AUTH_USER_MODEL)),
+                ('users_write', models.ManyToManyField(related_name='graph_write', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+        migrations.CreateModel(
+            name='Dashboard',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=64)),
+                ('template', models.TextField()),
+                ('data_sources', models.ManyToManyField(to='rrd.DataSource')),
+                ('graphs', models.ManyToManyField(to='rrd.Graph')),
+                ('groups_read', models.ManyToManyField(related_name='dashboard_read', to='auth.Group')),
+                ('groups_write', models.ManyToManyField(related_name='dashboard_write', to='auth.Group')),
+                ('users_read', models.ManyToManyField(related_name='dashboard_read', to=settings.AUTH_USER_MODEL)),
+                ('users_write', models.ManyToManyField(related_name='dashboard_write', to=settings.AUTH_USER_MODEL)),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]
diff --git a/rrd/models.py b/rrd/models.py
index 71a8362..49efd57 100644
--- a/rrd/models.py
+++ b/rrd/models.py
@@ -1,3 +1,58 @@
 from django.db import models
+from django.conf import settings
+import django.contrib.auth.models as amodels
 
-# Create your models here.
+
+class ModelWithPerms(models.Model):
+    users_read = models.ManyToManyField(
+        amodels.User,
+        related_name="%(class)s_read"
+    )
+    users_write = models.ManyToManyField(
+        amodels.User,
+        related_name="%(class)s_write"
+    )
+    groups_read = models.ManyToManyField(
+        amodels.Group,
+        related_name="%(class)s_read"
+    )
+    groups_write = models.ManyToManyField(
+        amodels.Group,
+        related_name="%(class)s_write"
+    )
+
+    class Meta:
+        abstract = True
+
+
+class DataSource(ModelWithPerms):
+    # an mqtt topic can be as long as 65,535 bytes when UTF-8 encoded,
+    # which is probably too much for a sensible db
+    topic = models.CharField(max_length=512)
+    path = models.FilePathField(
+        path=settings.RRD_DB_PATH,
+        recursive=True,
+        max_length=512,
+    )
+    rrd_config = models.TextField()
+    active = models.BooleanField(
+        default=True,
+    )
+
+
+class Graph(ModelWithPerms):
+    title = models.CharField(max_length=64)
+    data_sources = models.ManyToManyField(DataSource)
+    path = models.FilePathField(
+        path=settings.RRD_GRAPH_PATH,
+        recursive=True,
+        max_length=512,
+    )
+    rrd_config = models.TextField()
+
+
+class Dashboard(ModelWithPerms):
+    title = models.CharField(max_length=64)
+    graphs = models.ManyToManyField(Graph)
+    data_sources = models.ManyToManyField(DataSource)
+    template = models.TextField()