Adding Environment URL field in Phase model

apps/challenges/migrations/0058_adding_environment_url_for_rl_challenges.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.20 on 2019-07-17 09:25
+from __future__ import unicode_literals
+
+import django.core.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('challenges', '0057_add_task_def_arn_and_workers_field_to_challenge_model'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='challengephase',
+            name='environment_url',
+            field=models.CharField(max_length=2128, null=True, validators=[django.core.validators.URLValidator()]),
+        ),
+    ]

apps/challenges/models.py

@@ -1,6 +1,7 @@
 from __future__ import unicode_literals
 
 from django.contrib.auth.models import User
+from django.core.validators import URLValidator
 from django.db.models.signals import pre_save
 from django.dispatch import receiver
 from django.utils import timezone
@@ -232,6 +233,7 @@ def __init__(self, *args, **kwargs):
         null=True,
     )
     slug = models.SlugField(max_length=200, null=True, unique=True)
+    environment_url = models.CharField(validators=[URLValidator()], null=True, max_length=2128)  # Max length of URL and tag is 2000 and 128 respectively
 
     class Meta:
         app_label = "challenges"

apps/challenges/urls.py

@@ -151,4 +151,9 @@
         views.get_challenge_phase_by_slug,
         name="get_challenge_phase_by_slug",
     ),
+    url(
+        r"^phase/environment/(?P<slug>[\w-]+)/$",
+        views.get_challenge_phase_environment_url,
+        name="get_challenge_phase_environment_url",
+    ),
 ]

apps/challenges/views.py

@@ -2171,3 +2171,35 @@ def get_challenge_phase_by_slug(request, slug):
     serializer = ChallengePhaseSerializer(challenge_phase)
     response_data = serializer.data
     return Response(response_data, status=status.HTTP_200_OK)
+
+
+@api_view(["GET"])
+@throttle_classes([UserRateThrottle])
+@permission_classes((permissions.IsAuthenticated, HasVerifiedEmail))
+@authentication_classes((ExpiringTokenAuthentication,))
+def get_challenge_phase_environment_url(request, slug):
+    """
+    Returns environment image url and tag required for RL challenge evaluation
+    """
+    try:
+        challenge_phase = ChallengePhase.objects.get(slug=slug)
+    except ChallengePhase.DoesNotExist:
+        response_data = {
+            "error": "Challenge phase with slug {} does not exist".format(slug)
+        }
+        return Response(response_data, status=status.HTTP_400_BAD_REQUEST)
+    challenge = get_challenge_model(challenge_phase.challenge.pk)
+    if not is_user_a_host_of_challenge(request.user, challenge.pk):
+        response_data = {
+            "error": "Sorry, you are not authorized to access this."
+        }
+        return Response(response_data, status=status.HTTP_400_BAD_REQUEST)
+    if not challenge.is_docker_based:
+        response_data = {
+            "error": "Invalid resource"
+        }
+        return Response(response_data, status=status.HTTP_400_BAD_REQUEST)
+    response_data = {
+        "environment_url": challenge_phase.environment_url
+    }
+    return Response(response_data, status=status.HTTP_200_OK)

scripts/seed.py

@@ -175,11 +175,15 @@ def create_challenge_phases(challenge, number_of_phases=1):
     challenge_phases = []
     for i in range(number_of_phases):
         name = "{} Phase".format(fake.first_name())
+        year = datetime.date.today().year
+        slug = '{t}-{y}'.format(t=name, y=year)
+        slug = slug.lower().replace(" ", "-")
         with open(os.path.join(settings.BASE_DIR, 'examples', 'example1', 'test_annotation.txt'), 'rb') as data_file:
             data = data_file.read()
         data = data or None
         challenge_phase = ChallengePhase.objects.create(
             name=name,
+            slug=slug,
             description=fake.paragraph(),
             leaderboard_public=True,
             is_public=True,