nealtodd

Wagtail on AWS Lambda, with Zappa

Aim

A demonstration of Wagtail running on AWS Lambda + API Gateway using Zappa for deployment.

This is not a Production solution, it is an insecure setup focusing solely on getting Wagtail to run on Lambda in the simplest way possible (and at zero cost if it is not used beyond this demonstration (or close to zero depending on how much you exercise the S3 bucket)).

caveat emptor!

nealtodd

cd somewhere
git clone https://github.com/[OWNER]/[REPO].git --branch [SPECIFIC BRANCH] --single-branch
cd [REPO]
python setup.py develop
# Usually, restart dev server to prevent it using already loaded site-packages modules.
# Hack away on code in [REPO], python will use this one rather than the one in site-packages.
# When done, to switch back:
python setup.py develop --uninstall
cd ..
rm -rf [REPO]

nealtodd

import time
from collections import defaultdict, OrderedDict

from junorunner.testrunner import TestSuiteRunner
from junorunner.extended_runner import TextTestRunner, TextTestResult


class TimedTestSuiteRunner(TestSuiteRunner):
    """
    List the longest running tests in a suite

nealtodd

import sys

from django.apps import apps
from django.conf import settings
from django.core.management.base import BaseCommand
from django.db import connections
from django.db.migrations.autodetector import MigrationAutodetector
from django.db.migrations.executor import MigrationExecutor
from django.db.migrations.state import ProjectState
from django.db.utils import OperationalError

nealtodd

def reorder_ordereddict(ordered_dict, key_order):
    """
    Return a new OrderedDict using a source ordered_dict and key_order iterable.

    Any keys in ordered_dict that are not in key_order will be added
    in their original order to the end of the returned OrderedDict.
    KeyError will be raised for keys in key_order that are not in ordered_dict.

    Intended for specifiying the order of Form.fields without having to create
    them in the required order.

nealtodd

# If your test settings file doesn't import any other settings file
# then you can use the function directly:

def prevent_tests_migrate(db):
    import django
    from django.db import connections
    from django.db.migrations.executor import MigrationExecutor
    django.setup()
    ma = MigrationExecutor(connections[db]).loader.migrated_apps
    return dict(zip(ma, ['{a}.notmigrations'.format(a=a) for a in ma]))

nealtodd

#!/usr/bin/env bash

### BEGIN INIT INFO
# Provides:          emperor
# Required-Start:    $all
# Required-Stop:     $all
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: uwsgi for wagtail
# Description:       uwsgi for wagtail

nealtodd

Sublime Text 2 – Useful Shortcuts (PC)

Loosely ordered with the commands I use most towards the top. Sublime also offer full documentation.

Editing

Ctrl+C	copy current line (if no selection)
Ctrl+X	cut current line (if no selection)
Ctrl+⇧+K	delete line
Ctrl+↩	insert line after

nealtodd

from textwrap import dedent
from urlparse import urlparse

from django.core.management.base import BaseCommand
from django.core.urlresolvers import resolve, Resolver404


class Command(BaseCommand):
    """
    Take a fully qualified URL and show the resolved view

nealtodd

from django import forms


class MinimumRequiredFormSet(forms.models.BaseInlineFormSet):
    """
    Inline formset that enforces a minimum number of non-deleted forms
    that are not empty
    """
    default_minimum_forms_message = "At least %s set%s of data is required"