deploy a php app on google app engine
DESCRIPTION
PHP was added to the languages offered by Google App Engine about a year ago. This session will focus on porting an existing app on gae. We’ll start talking about the main characteristics of the app engine platform, which kind of services are available (persistence, storage, queue and so on) and how to use it. Then the PHP installation of app engine will be discussed, highlighting implementation choices and limitations. The second part of the talk will go into implementation details, in particular about tweaks needed to run an existing app on gae e.g: how a session is managed, logging is performed and how to interact with the file system not forgetting about deploy.TRANSCRIPT
Deploy !a PHP Application!on Google App Engine
PHP for App Engine
https://developers.google.com/events/io/sessions/333055646
The GAE platform
Platform as A Service (PaaS)!
Build, deploy & scale!
Don’t care about infrastructure
https://appengine.google.com/https://developers.google.com/appengine/
Google App Engine: services
All PaaS have limitations!
PHP is in preview phase!
Not all services are available
https://developers.google.com/appengine/features
Google App Engine: data storage
Google Cloud Sql !
Memcache!
Google Cloud Storage
Google App Engine: ext services
Email (internal or SendGrid)!
Twilio!
UrlFetch
Google App Engine: offline work
TaskQueue!
Cron
Google App Engine: auth
User Auth!
Application Identity
PHP on GAE
PHP 5.4!
Runs in a sandbox
https://developers.google.com/appengine/docs/php/
PHP on GAE
Some well-know extension are disabled: imagick, intl, pcntl, curl
PHP on GAE
Some well-know extension are disabled: imagick, intl, pcntl, curl
PHP on GAE
whaaat?
Some function are disabled!
permanently: exec, tmpfile!
partially: /e on preg_replace!
softly: gc_*, parse_str
PHP on GAE
File System is Read only: you can store files on Cloud Storage or external services
PHP on GAE
PHP on GAE
How to invoke external services (no curl remember? :-P)
PHP on GAE
PHP on GAE
Dynamic response max 32 MB!
Timeout on long response
PHP on GAE
Sessions are stored on Memcache !
session_*, $_SESSION work as expected!
use session_set_save_handler to change handler
PHP on GAE
Log are managed via syslog!
use PHP’s native syslog function!
use custom logging lib (eg. Monolog)
PHP on GAE
PHP on GAE: DB
PHP on GAE: sending mails
get the sdk!
requirements: python 2.7, php-cgi, mysql?!
local web server
wget https://storage.googleapis.com/appengine-sdks/featured/google_appengine_1.9.4.zip
App Engine SDK
# app.yaml application: propane-forge-391 version: 1 runtime: php api_version: 1 threadsafe: true
Base Config
# app.yaml application: propane-forge-391 version: 2 runtime: php api_version: 1 threadsafe: true
Base Config
# app.yaml — continued handlers: - url: /css static_dir: web/css - url: /js static_dir: web/js - url: .* script: web/index.php
Base Config
# php.ini google_app_engine.enable_functions = “…”
Base Config
!dev_appserver.py --php_executable_path=/usr/bin/php-cgi /
var/www/todo/ --host=gae.dev
Test Locally
!dev_appserver.py --php_executable_path=/usr/bin/php-cgi /
var/www/todo/
Test Locally
Deploy
!appcgf.py update /var/www/todo/!
(or git push)
A kitchen sink app
https://github.com/ideatosrl/silex-todo-gae
PHP on GAE: task queues
Execute offline work!
Expose endpoint(s) doing the work
PHP on GAE: task queues
# queue.yaml
PHP on GAE: task queues
PHP on GAE: task queues
PHP on GAE: task queues
# app.yaml
PHP on GAE: cronjobs
Schedule repetitive tasks!
Expose endpoint(s) doing the work
PHP on GAE: cronjobs
# cron.yaml
PHP on GAE: cronjobs
# app.yaml
PHP on GAE: users
PHP on GAE: modules
what we learned
integration is quite smooth for simple apps!!
some few common pattern
!apply to cloud.google.com/starterpack and get $ 500!
wanna try?
