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content.py
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content.py
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# -*- coding: utf-8 -*-
"""Content generation and deletion"""
import uuid
import random
from Acquisition import aq_parent
from five import grok
from zope.interface import Interface
from zope.component import getUtility
from plone.directives import form
from plone.uuid.interfaces import IUUID
from plone.app.uuid.utils import uuidToObject
from plone.app.layout.globals.interfaces import IViewView
from plone.app.layout.viewlets.interfaces import IAboveContentTitle
from plone.dexterity.utils import createContentInContainer
from collective.zamqp.interfaces import IProducer, IMessageArrivedEvent
from collective.zamqp.producer import Producer
from collective.zamqp.consumer import Consumer
from zope.i18nmessageid import MessageFactory as ZopeMessageFactory
_ = ZopeMessageFactory("collective.zamqpdemo")
class IContainer(form.Schema):
"""Dummy container"""
class IItem(form.Schema):
"""Dummy item"""
class ICreateItemMessage(Interface):
"""Marker interface for item creation message"""
class IDeleteItemMessage(Interface):
"""Marker interface for item deletion message"""
class CreateItemProducer(Producer):
"""Produces item creation requests"""
grok.name("amqpdemo.create") # is also the routing key
connection_id = "superuser"
serializer = "msgpack"
queue = "amqpdemo.create"
durable = False
class DeleteItemProducer(Producer):
"""Produces item deletion requests"""
grok.name("amqpdemo.delete") # is also the routing key
connection_id = "superuser"
serializer = "msgpack"
queue = "amqpdemo.delete"
durable = False
class CreateItemConsumer(Consumer):
"""Consumes item creation messages"""
grok.name("amqpdemo.create") # is also the queue name
connection_id = "superuser"
marker = ICreateItemMessage
durable = False
class DeleteItemConsumer(Consumer):
"""Consumes item deletion messages"""
grok.name("amqpdemo.delete") # is also the queue name
connection_id = "superuser"
marker = IDeleteItemMessage
durable = False
class CreateAndDeleteViewlet(grok.Viewlet):
grok.context(IContainer)
grok.viewletmanager(IAboveContentTitle)
grok.view(IViewView)
class CreateAndDelete(grok.View):
"""Item creation request view"""
grok.context(IContainer)
grok.name("create-and-delete")
def render(self):
producer = getUtility(IProducer, name="amqpdemo.create")
producer._register()
title = str(uuid.uuid4())
kwargs = {"title": title}
producer.publish(kwargs, correlation_id=IUUID(self.context))
self.request.response.redirect(self.context.absolute_url())
class CreateManyAndDelete(grok.View):
"""Item creation request view"""
grok.context(IContainer)
grok.name("create-many-and-delete")
## Use with Apache benchmark to test your setup r/w concurrency :)
# ab -n 10 -c 4 http://127.0.0.1:8081/Plone/test/@@create-many-and-delete
def render(self):
producer = getUtility(IProducer, name="amqpdemo.create")
producer._register()
title = str(uuid.uuid4())
for i in range(5):
kwargs = {"title": "%s-%s" % (title, i + 1)}
producer.publish(kwargs, correlation_id=IUUID(self.context))
self.request.response.redirect(self.context.absolute_url())
class CreateRandomAndDelete(grok.View):
"""Item creation request view"""
grok.context(IContainer)
grok.name("create-random-and-delete")
def render(self):
producer = getUtility(IProducer, name="amqpdemo.create")
producer._register()
title = str(uuid.uuid4())
for i in range(random.randint(1, 5)):
kwargs = {"title": "%s-%s" % (title, i + 1)}
producer.publish(kwargs, correlation_id=IUUID(self.context))
self.request.response.redirect(self.context.absolute_url())
@grok.subscribe(ICreateItemMessage, IMessageArrivedEvent)
def createItem(message, event):
"""Consume item creation message"""
uuid = message.header_frame.correlation_id
container = uuidToObject(uuid)
obj = createContentInContainer(container, "collective.zamqpdemo.item",
checkConstraints=True, **message.body)
kwargs = {"uuid": IUUID(obj)}
producer = getUtility(IProducer, name="amqpdemo.delete")
producer._register()
producer.publish(kwargs)
message.ack()
@grok.subscribe(IDeleteItemMessage, IMessageArrivedEvent)
def deleteItem(message, event):
"""Consume item deletion message"""
uuid = message.body["uuid"]
item = uuidToObject(uuid)
container = aq_parent(item)
container.manage_delObjects([item.id])
message.ack()