Make care single source of truth for asset config on middleware (#2000)

* add routes for middleware to fetch asset config

* cache middleware jwks

* allow asset authentication for assetbed

* squash migrations

* fix key cache issue

* fix assetbed filter for middlewares

* return asset presets from patient_from_asset route itself

* add is_parsed_by_ocr flag to indicate ocr use for automated round

* improve regex match for hostname query

* squash migrations

* Discard changes to config/settings/local.py

* update migrations

* add permission classes to test views

* take jwks as kwarg for jwt generation

* split open id auth response for easier mocking

* test middleware auth

* remove indexes

* remove unnessary comments

* use request mocks to test openid auth

* make push config logic async

* improve query

* fix inconsistent validation

* fix signal

* Relock dependencies

* update migrations

---------

Co-authored-by: vigneshhari <vichuhari100@gmail.com>

Pipfile

@@ -64,6 +64,7 @@ ipython = "==8.15.0"
 isort = "==5.12.0"
 mypy = "==1.9.0"
 pre-commit = "==3.4.0"
+requests-mock = "==1.12.1"
 tblib = "==2.0.0"
 watchdog = "==3.0.0"
 werkzeug = "==2.3.8"

care/facility/api/serializers/asset.py

@@ -1,7 +1,9 @@
 from datetime import datetime
 
 from django.core.cache import cache
-from django.db import transaction
+from django.db import models, transaction
+from django.db.models import F, Value
+from django.db.models.functions import Cast, Coalesce, NullIf
 from django.shortcuts import get_object_or_404
 from django.utils.timezone import now
 from drf_spectacular.utils import extend_schema_field
@@ -31,6 +33,7 @@
     UserDefaultAssetLocation,
 )
 from care.users.api.serializers.user import UserBaseMinimumSerializer
+from care.utils.assetintegration.asset_classes import AssetClasses
 from care.utils.assetintegration.hl7monitor import HL7MonitorAsset
 from care.utils.assetintegration.onvif import OnvifAsset
 from care.utils.assetintegration.ventilator import VentilatorAsset
@@ -210,13 +213,58 @@ def validate(self, attrs):
         ):
             raise ValidationError({"asset_class": "Cannot change asset class"})
 
+        if meta := attrs.get("meta"):
+            current_location = attrs.get(
+                "current_location", self.instance.current_location
+            )
+            ip_address = meta.get("local_ip_address")
+            middleware_hostname = (
+                meta.get("middleware_hostname")
+                or current_location.middleware_address
+                or current_location.facility.middleware_address
+            )
+            if ip_address and middleware_hostname:
+                asset_using_ip = (
+                    Asset.objects.annotate(
+                        resolved_middleware_hostname=Coalesce(
+                            NullIf(
+                                Cast(
+                                    F("meta__middleware_hostname"), models.CharField()
+                                ),
+                                Value('""'),
+                            ),
+                            NullIf(
+                                F("current_location__middleware_address"), Value("")
+                            ),
+                            F("current_location__facility__middleware_address"),
+                            output_field=models.CharField(),
+                        )
+                    )
+                    .filter(
+                        asset_class__in=[
+                            AssetClasses.ONVIF.name,
+                            AssetClasses.HL7MONITOR.name,
+                        ],
+                        current_location__facility=current_location.facility_id,
+                        resolved_middleware_hostname=middleware_hostname,
+                        meta__local_ip_address=ip_address,
+                    )
+                    .exclude(id=self.instance.id if self.instance else None)
+                    .only("name")
+                    .first()
+                )
+                if asset_using_ip:
+                    raise ValidationError(
+                        f"IP Address {ip_address} is already in use by {asset_using_ip.name} asset"
+                    )
+
         return super().validate(attrs)
 
     def create(self, validated_data):
         last_serviced_on = validated_data.pop("last_serviced_on", None)
         note = validated_data.pop("note", None)
         with transaction.atomic():
-            asset_instance = super().create(validated_data)
+            asset_instance: Asset = super().create(validated_data)
             if last_serviced_on or note:
                 asset_service = AssetService(
                     asset=asset_instance, serviced_on=last_serviced_on, note=note
@@ -226,7 +274,7 @@ def create(self, validated_data):
                 asset_instance.save(update_fields=["last_service"])
         return asset_instance
 
-    def update(self, instance, validated_data):
+    def update(self, instance: Asset, validated_data):
         user = self.context["request"].user
         with transaction.atomic():
             if validated_data.get("last_serviced_on") and (
@@ -271,11 +319,45 @@ def update(self, instance, validated_data):
                     asset=instance,
                     performed_by=user,
                 ).save()
-            updated_instance = super().update(instance, validated_data)
+            updated_instance: Asset = super().update(instance, validated_data)
             cache.delete(f"asset:{instance.external_id}")
         return updated_instance
 
 
+class AssetConfigSerializer(ModelSerializer):
+    id = UUIDField(source="external_id")
+    type = CharField(source="asset_class")
+    description = CharField(default="")
+    ip_address = CharField(default="")
+    access_key = CharField(default="")
+    username = CharField(default="")
+    password = CharField(default="")
+    port = serializers.IntegerField(default=80)
+
+    def to_representation(self, instance: Asset):
+        data = super().to_representation(instance)
+        data["ip_address"] = instance.meta.get("local_ip_address")
+        if camera_access_key := instance.meta.get("camera_access_key"):
+            values = camera_access_key.split(":")
+            if len(values) == 3:
+                data["username"], data["password"], data["access_key"] = values
+        return data
+
+    class Meta:
+        model = Asset
+        fields = (
+            "id",
+            "name",
+            "type",
+            "description",
+            "ip_address",
+            "access_key",
+            "username",
+            "password",
+            "port",
+        )
+
+
 class AssetTransactionSerializer(ModelSerializer):
     id = UUIDField(source="external_id", read_only=True)
     asset = AssetBareMinimumSerializer(read_only=True)

care/facility/api/serializers/patient_consultation.py

@@ -10,7 +10,10 @@
 from care.abdm.utils.api_call import AbdmGateway
 from care.facility.api.serializers import TIMESTAMP_FIELDS
 from care.facility.api.serializers.asset import AssetLocationSerializer
-from care.facility.api.serializers.bed import ConsultationBedSerializer
+from care.facility.api.serializers.bed import (
+    AssetBedSerializer,
+    ConsultationBedSerializer,
+)
 from care.facility.api.serializers.consultation_diagnosis import (
     ConsultationCreateDiagnosisSerializer,
     ConsultationDiagnosisSerializer,
@@ -765,14 +768,14 @@ def create(self, validated_data):
         raise NotImplementedError
 
 
-class PatientConsultationIDSerializer(serializers.ModelSerializer):
-    consultation_id = serializers.UUIDField(source="external_id", read_only=True)
-    patient_id = serializers.UUIDField(source="patient.external_id", read_only=True)
-    bed_id = serializers.UUIDField(source="current_bed.bed.external_id", read_only=True)
+class PatientConsultationIDSerializer(serializers.Serializer):
+    consultation_id = serializers.UUIDField(read_only=True)
+    patient_id = serializers.UUIDField(read_only=True)
+    bed_id = serializers.UUIDField(read_only=True)
+    asset_beds = AssetBedSerializer(many=True, read_only=True)
 
     class Meta:
-        model = PatientConsultation
-        fields = ("consultation_id", "patient_id", "bed_id")
+        fields = ("consultation_id", "patient_id", "bed_id", "asset_beds")
 
 
 class EmailDischargeSummarySerializer(serializers.Serializer):