Google App Engine with Gaelyk

Google App Engine with Gaelyk Easy cloud development. Or why using Gaelyk is like cheating the cloud development game.

About me#java #groovy #grails#android #iphone-dev#clojure #lisp#agile#ruby #jruby #macruby#favoriteMedium #software_architect#cloud #gae

Cloud computing?

Teach Yourself Gaelyk in 30 minutes• Introduction to Google App Engine• Overview of Gaelyk• Getting Started• Future of GAE and Gaelyk

http://gaelyk.appspot.com

Guillaume Laforge Head of Groovy Development at SpringSourcehttp://www.slideshare.net/glaforge

Software as a Service Gmail, SalesForcePlatform as a Service Google App EngineInfrastructure as a Service Amazon EC2, Azure

Platform as a Service Google App Engine

Gaelyk Services• Template pages• Datastore (similar to NoSQL)• Email• XMPP (Jabber e.g., Gtalk)• Multi-tenant(namespace)• Caching (Memcache)

• Download “gaelyk-template-project”• Create groovy class• Create gtpl template pages• dev_appserver.sh war• http://localhost:8080/

Gaelyk Directory Structure

URL Routing/ Simple URL routings conﬁg in routes.groovy /get "/about", redirect: "/general/about.html"

URL Routing/ Advance URL routings conﬁg in routes.groovy /get “/project/@id”, forward: “/project.groovy?id=@id”get “/delete/@id”, forward: “/delete.groovy?id=@id”get “/more/*”, forward: ”/more.groovy”/ More involved example /get “/edit/@project/@id”, forward: “/edit.groovy?id=@id&project=@project”

Controller/ Simple Groovlet controller /def name = params.namedef now = new Date()request.now = nowrequest.name = nameforward “hello.gtpl”

Views/Templates<body> <% def name = params.name def message = "Hi ${name} Hello World!" %> ${message} </body>

Views/Templates (2)<% def user = session.user%><html> <body> <% if (user) { %> You are currently logged in. <% } else { %> Youre not logged in. <% } %> </body></html>

Datastore (1)/ Create and save entity data /def project = new Entity(“project”)project.name = “Kickass Web Application”project.owner = bob.key.idproject.createdDate = new Date()project.save()

Datastore (2)def project = new Entity(“project”)project.name = “Kickass Web Application”project.owner = bob.key.idproject.createdDate = new Date()project.save()//...sometime to delete dataproject.delete()

Datastore (3)/ Querying data /def query = new Query(“project”)query.addSort(“createdDate”, SortDirection.DESCENDING)query.addFilter(“name”, FilterOperator.EQUAL, “Kickass Project”)def preparedQuery = datastore.prepare(query)def results = preparedQuery.adList( withLimit(20) )

Datastore (4)/ Querying data with more Groovy meta-programming /def query = new Query(“project”) .addSort(“createdDate”, SortDirection.DESCENDING) .addFilter(“name”, FilterOperator.EQUAL, “Kickass Project”)def results = datastore.prepare(query).asList( withLimit(20) )

Datastore (5)/ Latest Query DSL -- Not release yet / SELECT * FROM projects WHERE name = “Kickass Project” ORDER BY createdDate DESC

<% def results = request.results %><ul>! <% results.each { result -> %>! ! <li>! ! ! ${result.name}! ! </li>! <% } %></ul>

Datastore (4)/ Create and save entity data // in “Project X” context /namespace.of(“projectX”) { def project = new Entity(“project”) project.name = “Kickass Web Application” project.owner = bob.key.id project.createdDate = new Date() project.save()}

Email/ Sending email /mail.send from: "app-admin-email@gmail.com", to: "recipient@somecompany.com", subject: "Re: Invoice", textBody: "Hi, here’s the latest invoice", attachment: [data: "Latest Invoice , fileName: "invoice.doc"]

Deployment/ Running on local for development /dev_appserver.sh war/ Deploy to GAE /appcfg.sh update war

Showcase: AndroidRockeeet

• AndroidRockeeet.appspot.com• Android deployment tool• From concept to 1st deploy = 5 hours• Beta testing now• Never concerned about scaling

What’s missing from this talk? Plugins Billing Quota Advance API Apps market integration ...

http://shitmores.blogspot.com	250
http://shitmores.blogspot.co.uk	9
http://shitmores.blogspot.in	3
http://shitmores.blogspot.ca	2
http://shitmores.blogspot.it	2
http://shitmores.blogspot.de	2
http://shitmores.blogspot.mx	2
http://shitmores.blogspot.fr	2
http://shitmores.blogspot.com.au	2
http://shitmores.blogspot.se	1

Google App Engine with Gaelyk

by Seymour Cakes on Jul 09, 2011

Accessibility

Categories

Tags

Upload Details

Usage Rights

10 Embeds 275

Statistics

Google App Engine with Gaelyk — Presentation Transcript