Fresh celery sample

celery/demo/__init__.py

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+from __future__ import absolute_import
+
+from .celery import app as celery_app
+
+__all__ = ['celery_app']

celery/demo/celery.py

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+from __future__ import absolute_import, unicode_literals
+import os
+from celery import Celery
+
+# set the default Django settings module for the 'celery' program.
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'demo.settings')
+
+app = Celery('demo')
+
+# Using a string here means the worker don't have to serialize
+# the configuration object to child processes.
+# - namespace='CELERY' means all celery-related configuration keys
+#   should have a `CELERY_` prefix.
+app.config_from_object('django.conf:settings', namespace='CELERY')
+
+# Load task modules from all registered Django app configs.
+app.autodiscover_tasks()

celery/demo/hellocelery/apps.py

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+from django.apps import AppConfig
+
+
+class HellowoldConfig(AppConfig):
+    name = 'hellowold'

celery/demo/hellocelery/flows.py

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+from viewflow import flow, frontend
+from viewflow.base import this, Flow
+from viewflow.contrib import celery
+from viewflow.flow.views import CreateProcessView, UpdateProcessView
+
+from .models import HelloWorldProcess
+from .tasks import send_hello_world_request
+
+
+@frontend.register
+class HelloWorldFlow(Flow):
+    process_class = HelloWorldProcess
+
+    start = (
+        flow.Start(
+            CreateProcessView,
+            fields=["text"]
+        ).Permission(
+            auto_create=True
+        ).Next(this.approve)
+    )
+
+    approve = (
+        flow.View(
+            UpdateProcessView,
+            fields=["approved"]
+        ).Permission(
+            auto_create=True
+        ).Next(this.check_approve)
+    )
+
+    check_approve = (
+        flow.If(lambda activation: activation.process.approved)
+        .Then(this.send)
+        .Else(this.end)
+    )
+
+    send = (
+        celery.Job(
+            send_hello_world_request
+        ).Next(this.end)
+    )
+
+    end = flow.End()

celery/demo/hellocelery/migrations/0001_initial.py

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+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.5 on 2017-02-10 06:15
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        ('viewflow', '0005_rename_flowcls'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='HelloWorldProcess',
+            fields=[
+                ('process_ptr', models.OneToOneField(auto_created=True, on_delete=django.db.models.deletion.CASCADE, parent_link=True, primary_key=True, serialize=False, to='viewflow.Process')),
+                ('text', models.CharField(max_length=150)),
+                ('approved', models.BooleanField(default=False)),
+            ],
+            options={
+                'abstract': False,
+            },
+            bases=('viewflow.process',),
+        ),
+    ]

celery/demo/hellocelery/models.py

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+from django.db import models
+from viewflow.models import Process
+
+
+class HelloWorldProcess(Process):
+    text = models.CharField(max_length=150)
+    approved = models.BooleanField(default=False)

celery/demo/hellocelery/tasks.py

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+from celery import shared_task
+from celery.utils.log import get_task_logger
+
+from viewflow.flow import flow_job
+
+
+logger = get_task_logger(__name__)
+
+
+@shared_task
+@flow_job
+def send_hello_world_request(activation):
+    logger.info(activation.process.text)

celery/demo/settings.py

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+"""
+Django settings for demo project.
+
+Generated by 'django-admin startproject' using Django 1.10.5.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/1.10/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/1.10/ref/settings/
+"""
+
+import os
+
+# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+
+
+# Quick-start development settings - unsuitable for production
+# See https://docs.djangoproject.com/en/1.10/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = '+20@e^&9z9ef^i^!fti+$v7d!uwetg07^1b$xels75h!6uo&^p'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = []
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+    'material',
+    'material.frontend',
+    'viewflow',
+    'viewflow.frontend',
+    'demo.hellocelery',
+]
+
+MIDDLEWARE = [
+    'django.middleware.security.SecurityMiddleware',
+    'django.contrib.sessions.middleware.SessionMiddleware',
+    'django.middleware.common.CommonMiddleware',
+    'django.middleware.csrf.CsrfViewMiddleware',
+    'django.contrib.auth.middleware.AuthenticationMiddleware',
+    'django.contrib.messages.middleware.MessageMiddleware',
+    'django.middleware.clickjacking.XFrameOptionsMiddleware',
+]
+
+import django
+if django.VERSION < (1, 10):
+    MIDDLEWARE_CLASSES = MIDDLEWARE
+
+ROOT_URLCONF = 'demo.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        'APP_DIRS': True,
+        'OPTIONS': {
+            'context_processors': [
+                'django.template.context_processors.debug',
+                'django.template.context_processors.request',
+                'django.contrib.auth.context_processors.auth',
+                'django.contrib.messages.context_processors.messages',
+            ],
+        },
+    },
+]
+
+WSGI_APPLICATION = 'demo.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/1.10/ref/settings/#databases
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/1.10/ref/settings/#auth-password-validators
+
+AUTH_PASSWORD_VALIDATORS = [
+    {
+        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
+    },
+    {
+        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
+    },
+]
+
+
+# Internationalization
+# https://docs.djangoproject.com/en/1.10/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'UTC'
+
+USE_I18N = True
+
+USE_L10N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/1.10/howto/static-files/
+
+STATIC_URL = '/static/'
+
+
+# Celery
+# http://docs.celeryproject.org/en/latest/
+CELERY_ACCEPT_CONTENT = ['json']
+CELERY_RESULT_SERIALIZER = 'json'
+CELERY_TASK_SERIALIZER = 'json'
+
+# Test only
+CELERY_TASK_ALWAYS_EAGER = True
+CELERY_TASK_EAGER_PROPAGATES = True
+

celery/demo/tests.py

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+from django.contrib.auth.models import User
+from django.test import TestCase
+from viewflow.models import Process
+
+
+class Test(TestCase):
+    def setUp(self):
+        User.objects.create_superuser('admin', 'admin@example.com', 'password')
+        self.client.login(username='admin', password='password')
+
+    def testApproved(self):
+        self.client.post(
+            '/workflow/hellocelery/start/',
+            {'text': 'Hello, celery',
+             '_viewflow_activation-started': '2000-01-01'}
+        )
+
+        self.client.post(
+            '/workflow/hellocelery/1/approve/2/assign/'
+        )
+
+        self.client.post(
+            '/workflow/hellocelery/1/approve/2/',
+            {'approved': True,
+             '_viewflow_activation-started': '2000-01-01'}
+        )
+
+        process = Process.objects.get()
+
+        self.assertEquals('DONE', process.status)
+        self.assertEquals(5, process.task_set.count())
+
+    def testNotApproved(self):
+        self.client.post(
+            '/workflow/hellocelery/start/',
+            {'text': 'Hello, celery',
+             '_viewflow_activation-started': '2000-01-01'}
+        )
+
+        self.client.post(
+            '/workflow/hellocelery/1/approve/2/assign/'
+        )
+
+        self.client.post(
+            '/workflow/hellocelery/1/approve/2/',
+            {'approved': False,
+             '_viewflow_activation-started': '2000-01-01'}
+        )
+
+        process = Process.objects.get()
+
+        self.assertEquals('DONE', process.status)
+        self.assertEquals(4, process.task_set.count())

celery/demo/urls.py

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+"""demo URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/1.10/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.conf.urls import url, include
+    2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
+"""
+from django.conf.urls import url, include
+from django.views import generic
+from material.frontend import urls as frontend_urls
+
+urlpatterns = [
+    url(r'^$', generic.RedirectView.as_view(url='/workflow/', permanent=False)),
+    url(r'', include(frontend_urls)),
+]

celery/demo/wsgi.py

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+"""
+WSGI config for demo project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/1.10/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "demo.settings")
+
+application = get_wsgi_application()

celery/manage.py

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+#!/usr/bin/env python
+import os
+import sys
+
+if __name__ == "__main__":
+    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "demo.settings")
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError:
+        # The above import may fail for some other reason. Ensure that the
+        # issue is really that Django is missing to avoid masking other
+        # exceptions on Python 2.
+        try:
+            import django
+        except ImportError:
+            raise ImportError(
+                "Couldn't import Django. Are you sure it's installed and "
+                "available on your PYTHONPATH environment variable? Did you "
+                "forget to activate a virtual environment?"
+            )
+        raise
+    execute_from_command_line(sys.argv)

celery/requirements.txt

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+django==1.10.5
+celery==4.0.2
+django-material==0.12.3
+viewflow-pro=0.12.0
+