pyramid on heroku

entrypoint.sh

#!/bin/bash

if [ "$1" = 'run' ]; then
    shift

    render-config site.ini.in site.ini

    exec $@
fi

# override the entrypoint script and execute the command
exec "$@"

Procfile

release: ./entrypoint.sh run alembic -c site.ini upgrade head
web: ./entrypoint.sh run pserve site.ini

render_config.py

import argparse
import jinja2
import os

def main():
    parser = argparse.ArgumentParser()
    parser.add_argument('template')
    parser.add_argument('output')
    args = parser.parse_args()
    
    env = jinja2.Environment(
        loader=jinja2.FileSystemLoader(os.getcwd()),
        undefined=jinja2.StrictUndefined,
    )

    template = env.get_template(args.template)
    result = template.render({
        'env': os.environ,
    })

    with open(args.output, 'w', encoding='utf8') as fp:
        fp.write(result)

site.ini.in

[db]
url = {{ env.DATABASE_URL }}
pool_recycle = 3600
engine_id = myapp

[alembic]
script_location = myapp.model:migrations
file_template = %%(rev)s_%%(slug)s

[app:front]
use = egg:myapp#front

tm.annotate_user = no
retry.attempts = 3

jinja2.trim_blocks = yes
jinja2.lstrip_blocks = yes

pyramid.reload_assets = false
pyramid.reload_templates = false
pyramid.debug_authorization = false
pyramid.debug_notfound = false
pyramid.debug_routematch = false
pyramid.default_locale_name = en

auth.cookie_name = auth_token
auth.secret = {{ env.AUTH_SECRET }}
auth.secure = yes

session.cookie_name = session
session.salt = session
session.secret = {{ env.SESSION_SECRET }}
session.secure = yes

support_email = {{ env.SUPPORT_EMAIL | default("support@example.com") }}

static_pkg = myapp.web:static

[filter:tracker]
use = egg:request-id
format = {status} {REQUEST_METHOD:<6} {REQUEST_PATH:<40} {REQUEST_ID}
exclude_prefixes =
    /static

[composite:dev-platform]
use = egg:rutter#urlmap

/ = front

[pipeline:main]
pipeline =
    egg:PasteDeploy#prefix
    tracker
    dev-platform

[server:main]
use = egg:waitress#main
host = 0.0.0.0
port = {{ env.PORT }}

[loggers]
keys = root, alembic, sqlalchemy, myapp, translogger

[handlers]
keys = console, translogger

[formatters]
keys = generic, minimal

[logger_root]
level = INFO
handlers = console

[logger_alembic]
level = INFO
handlers =
qualname = alembic

[logger_sqlalchemy]
level = WARN
handlers =
qualname = sqlalchemy

[logger_myapp]
level = DEBUG
handlers =
qualname = myapp

[logger_translogger]
level = INFO
handlers = translogger
qualname = request_id
propagate = 0

[handler_console]
class = StreamHandler
args = (sys.stderr,)
level = NOTSET
formatter = generic

[handler_translogger]
class = StreamHandler
args = (sys.stderr,)
level = NOTSET
formatter = minimal

[formatter_generic]
format = %(asctime)s %(levelname)-5.5s [%(name)s][%(threadName)s] %(message)s

[formatter_minimal]
format = %(message)s