Add peers readonly api and instancelink constraint (#13916)

Add Disconnected link state

introspect_receptor_connections is a periodic
task that examines active receptor connections
and cross-checks it with the InstanceLink info.

Any links that should be active but are not
will be put into a Disconnected state. If
active, it will be in an Established state.

UI - Add hop creation and peers mgmt (#13922)

* add UI for mgmt peers, instance edit and add

* add peer info on detail and bug fix on detail

* remove unused chip and change peer label

* rename lookup, put Instance type disable on edit

---------

Co-authored-by: tanganellilore <lorenzo.tanagnelli@hotmail.it>

awx/api/serializers.py

@@ -5356,10 +5356,16 @@ class ScheduleSerializer(LaunchConfigurationBaseSerializer, SchedulePreviewSeria
 class InstanceLinkSerializer(BaseSerializer):
     class Meta:
         model = InstanceLink
-        fields = ('source', 'target', 'link_state')
+        fields = ('id', 'url', 'related', 'source', 'target', 'link_state')
 
-    source = serializers.SlugRelatedField(slug_field="hostname", read_only=True)
-    target = serializers.SlugRelatedField(slug_field="hostname", read_only=True)
+    source = serializers.SlugRelatedField(slug_field="hostname", queryset=Instance.objects.all())
+    target = serializers.SlugRelatedField(slug_field="hostname", queryset=Instance.objects.all())
+
+    def get_related(self, obj):
+        res = super(InstanceLinkSerializer, self).get_related(obj)
+        res['source_instance'] = self.reverse('api:instance_detail', kwargs={'pk': obj.source.id})
+        res['target_instance'] = self.reverse('api:instance_detail', kwargs={'pk': obj.target.id})
+        return res
 
 
 class InstanceNodeSerializer(BaseSerializer):

awx/api/urls/peers.py

@@ -0,0 +1,14 @@
+# Copyright (c) 2017 Ansible, Inc.
+# All Rights Reserved.
+
+from django.urls import re_path
+
+from awx.api.views import PeersList, PeersDetail
+
+
+urls = [
+    re_path(r'^$', PeersList.as_view(), name='peers_list'),
+    re_path(r'^(?P<pk>[0-9]+)/$', PeersDetail.as_view(), name='peers_detail'),
+]
+
+__all__ = ['urls']

awx/api/urls/urls.py

@@ -84,6 +84,7 @@ from .oauth2_root import urls as oauth2_root_urls
 from .workflow_approval_template import urls as workflow_approval_template_urls
 from .workflow_approval import urls as workflow_approval_urls
 from .analytics import urls as analytics_urls
+from .peers import urls as peers_urls
 
 v2_urls = [
     re_path(r'^$', ApiV2RootView.as_view(), name='api_v2_root_view'),
@@ -153,6 +154,7 @@ v2_urls = [
     re_path(r'^bulk/$', BulkView.as_view(), name='bulk'),
     re_path(r'^bulk/host_create/$', BulkHostCreateView.as_view(), name='bulk_host_create'),
     re_path(r'^bulk/job_launch/$', BulkJobLaunchView.as_view(), name='bulk_job_launch'),
+    re_path(r'^peers/', include(peers_urls)),
 ]
 
 

awx/api/views/__init__.py

@@ -4350,3 +4350,17 @@ class WorkflowApprovalDeny(RetrieveAPIView):
             return Response({"error": _("This workflow step has already been approved or denied.")}, status=status.HTTP_400_BAD_REQUEST)
         obj.deny(request)
         return Response(status=status.HTTP_204_NO_CONTENT)
+
+
+class PeersList(ListAPIView):
+    name = _("Peers")
+    model = models.InstanceLink
+    serializer_class = serializers.InstanceLinkSerializer
+    search_fields = ('source', 'target', 'link_state')
+
+
+class PeersDetail(RetrieveAPIView):
+    name = _("Peers Detail")
+    always_allow_superuser = True
+    model = models.InstanceLink
+    serializer_class = serializers.InstanceLinkSerializer

awx/api/views/root.py

@@ -129,6 +129,7 @@ class ApiVersionRootView(APIView):
         data['mesh_visualizer'] = reverse('api:mesh_visualizer_view', request=request)
         data['bulk'] = reverse('api:bulk', request=request)
         data['analytics'] = reverse('api:analytics_root_view', request=request)
+        data['peers'] = reverse('api:peers_list', request=request)
         return Response(data)