registration

api/registration/__init__.py

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+"""Registrations"""
+
+from . import views, models

api/registration/models.py

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+from sqlalchemy import String
+
+from api.database import (Model, SurrogatePK, db,
+                          Column, relationship)
+
+registration_target_assoc = db.Table(
+    "registration_target",
+    db.Column("registration", db.Integer(), db.ForeignKey("target.id")),
+    db.Column("target", db.Integer(), db.ForeignKey("registration.id"))
+)
+
+
+class Registration(SurrogatePK, Model):
+    __tablename__ = "registration"
+    name = Column(String(255), unique=True, nullable=False)
+    routing_key = Column(String(255), nullable=False)
+    targets = relationship(
+        "Target", secondary=registration_target_assoc, backref=db.backref("registrations"))
+
+    def __init__(self, **kwargs):
+        super(Registration, self).__init__(**kwargs)

api/registration/serializers.py

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+from marshmallow import Schema, fields
+
+from api.target.serializers import TargetSchema
+
+
+class Registration(Schema):
+    id = fields.Int()
+    name = fields.Str()
+    Token = fields.Str(dump_only=True)
+    exchange = fields.Nested(TargetSchema, required=True)
+
+
+registration_schema = Registration()
+registrations_schema = Registration(many=True)

api/registration/views.py

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+from flask import Blueprint
+from flask_apispec import use_kwargs, marshal_with, doc
+from flask_jwt_extended import jwt_required
+from marshmallow import fields
+from sqlalchemy import or_
+
+from api.exceptions import NotFoundException, BadRequestException
+from api.target.models import Target
+from api.target_exchange.models import TargetExchange
+from .models import Registration
+from .serializers import registration_schema, registrations_schema
+
+blueprint = Blueprint('Registration', __name__)
+
+
+@doc(tags=['Registration'])
+@blueprint.route('', methods=['GET'])
+@jwt_required()
+@use_kwargs({'exchange': fields.Str(), 'target': fields.Str()})
+@marshal_with(registrations_schema)
+def get_list(exchange=None, target=None):
+    res = Registration.query
+    if exchange is not None:
+        res = res.join(Registration.targets).join(Target.exchange).filter(
+            or_(TargetExchange.name == exchange, Target.name == target, Target.routing_key == target))
+    return res.all()
+
+
+@doc(tags=['Registration'])
+@blueprint.route('', methods=['POST'])
+@jwt_required()
+@use_kwargs(registration_schema)
+@marshal_with(registration_schema)
+def create(name, routing_key, targets):
+    target_ids = [t.id for t in targets]
+    xchanges = Target.query.filter(Target.target_exchange_id.in_(target_ids))
+    if len(xchanges) != len(target_ids):
+        xchange_ids = [t.id for t in xchanges]
+        not_found = ','.join([f'{t.name}({t.id})' for t in targets if t.id not in xchange_ids])
+        raise BadRequestException(f"the target {not_found} could not be found")
+    registration = Registration(name=name, routing_key=routing_key, registration_exchange_id=xchanges.id)
+    registration.save()
+    return registration
+
+
+@doc(tags=['Registration'])
+@blueprint.route('/<registration_id>', methods=['GET'])
+@jwt_required()
+@marshal_with(registration_schema)
+def get_by_id(registration_id: int):
+    registration = Registration.get_by_id(registration_id)
+    if registration is not None:
+        return registration
+    else:
+        return NotFoundException(Registration.__name__)
+
+
+@doc(tags=['Registration'])
+@blueprint.route('/<registration_id>', methods=['PUT'])
+@jwt_required()
+@use_kwargs(registration_schema)
+@marshal_with(registration_schema)
+def update(registration_id, **kwargs):
+    registration = Registration.get_by_id(registration_id)
+    if registration is not None:
+        return registration.update(**kwargs)
+    else:
+        return NotFoundException(Registration.__name__)