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CloudKit

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J
Jon Crosby

- The document discusses the CloudKit framework, which allows building RESTful web applications and services using Rack, HTTP, and JSON. - CloudKit exposes collections of JSON documents through a RESTful interface and handles common tasks like content negotiation, versioning, and concurrency control using HTTP features like ETags. - Examples are given of creating, retrieving, updating and deleting resources representing todo items using CloudKit and making HTTP requests with curl. This allows building a basic RESTful todo application within a few lines of code.

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Jon Crosby http://joncrosby.me
CloudKit
Engine Yard Solo “The platform for on-demand management of your Ruby on Rails application in the cloud.”
We’re Hiring
CloudKit
Open Web JSON Appliance
Open Web JSON Appliance
RESTful Collections of JSON Documents
CouchDB Persevere
Ruby
$ gem install cloudkit
WayOfThinking.new
WayOfThinking.web
2009
if (developer.building_web_framework?) { MVCAbstraction.new }
Rails 3
Rails 3 => API
framework = { :orm => AR :dispatcher => AD}.merge( :orm => YourORM)
framework = { :orm => AR :dispatcher => AD}.merge( :orm => YourORM)
framework = { :orm => AR :dispatcher => AD}.merge( :orm => YourORM)
! MVC
! MVC “in the back?”
RESTful Application Architectures
RADAR Dave Thomas http://pragdave.pragprog.com/pragdave/2007/03/the_radar_archi.html
Resource Composition in the Browser A.S. Focus
Resource Composition in the Browser A.S. Focus
Resource Composition in the Browser A.S. Focus
Cappuccino http://280slides.com
Sproutcore http://sproutcore.com
Desktop / Mobile Apps
ESI Caching Layer REST Fragment A Service Client REST Fragment B Service
jQueryUI Dojo MooTools
WayOfThinking.web
Rack
The Web
CloudKit
HTTP
Intermediaries HTTP
Intermediaries App HTTP
Intermediaries App HTTP
Intermediaries Rack HTTP
CloudKit
HTTP
Intermediaries HTTP
Middleware HTTP
Middleware App HTTP
Rack is the Web
Constraints
Constraints => Interface
Constraints => Interface => SPEC
CloudKit
REST
Roy Fielding Architectural Styles and the Design of Network-based Software Architectures http://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htm
Build An App
config.ru
require ‘cloudkit’ expose :todos, :profiles
Done
$ rackup config.ru
$ curl -i http://localhost:9292/cloudkit-meta
$ curl -i http://localhost:9292/cloudkit-meta HTTP/1.1 200 OK ETag: quot;5b6f484abf2d95cec3ea8867d1754418quot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 33 {quot;urisquot;:[quot;/todosquot;,quot;/profilesquot;]}
$ curl -i -XOPTIONS http://localhost:9292/todos
$ curl -i -XOPTIONS http://localhost:9292/todos HTTP/1.1 200 OK Content-Type: application/json Content-Length: 0 Allow: GET, HEAD, POST, OPTIONS
$ curl -i http://localhost:9292/todos
$ curl -i http://localhost:9292/todos HTTP/1.1 200 OK ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 32 {quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}
$ curl -i http://localhost:9292/todos HTTP/1.1 200 OK ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 32 {quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}
$ curl -i http://localhost:9292/todos HTTP/1.1 200 OK ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 32 {quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}
$ curl -i http://localhost:9292/todos HTTP/1.1 200 OK ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 32 {quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}
Link Relations and HTTP Header Linking IETF Draft by Mark Nottingham http://tools.ietf.org/html/draft-nottingham-http-link-header-04
Hypermedia as the Engine of Application State -- Fielding
Connectedness -- Richardson, Ruby
$ curl -i -XPOST -d'{quot;titlequot;:quot;fooquot;}' http://localhost:9292/todos
$ curl -i -XPOST -d'{quot;titlequot;:quot;fooquot;}' http://localhost:9292/todos HTTP/1.1 201 Created Cache-Control: no-cache Content-Type: application/json Content-Length: 159 { quot;okquot;:true, quot;uriquot;:quot;/todos/9216df80-0c7b-012c-af2e-0023dfa0a208quot;, quot;etagquot;:quot;9216dde0-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:13:04 GMTquot; }
Read-optimized
HTTP-Oriented Storage
Metadata + Document
URI, ETag, Last-Modified, etc. + Document
SQL
ORM
Tokyo Cabinet
Tokyo Cabinet Tables
todos[“random_id”] = { “uri” => “/todos/abc”, “etag” => “9216dde0-0c7b-012c”, “last_modified” => “Thu, 16 Apr 2009 06:13:04 GMT”, “remote_user” => “http://joncrosby.me”, “json” => “{”title”:”foo”}”, ... }
Rufus::Tokyo record = store.query { |q| q.add_condition(“uri”, :eql, “/todos/abc”) }
Schema-free
* Schema-free
HTTP and JSON are the Schema
$ curl -i -XPUT -d'{quot;titlequot;:quot;barquot;}' http://localhost:9292/todos/abc
$ curl -i -XPUT -d'{quot;titlequot;:quot;barquot;}' http://localhost:9292/todos/abc HTTP/1.1 201 Created Cache-Control: no-cache Content-Type: application/json Content-Length: 126 { quot;okquot;:true, quot;uriquot;:quot;/todos/abcquot;, quot;etagquot;:quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:15:49 GMTquot; }
$ curl -i -XOPTIONS http://localhost:9292/todos/abc
$ curl -i -XOPTIONS http://localhost:9292/todos/abc HTTP/1.1 200 OK Content-Type: application/json Content-Length: 0 Allow: GET, HEAD, PUT, DELETE, OPTIONS
$ curl -i http://localhost:9292/todos/abc
$ curl -i http://localhost:9292/todos/abc HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 15 {quot;titlequot;:quot;barquot;}
$ curl -i http://localhost:9292/todos/abc HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 15 {quot;titlequot;:quot;barquot;}
$ curl -i http://localhost:9292/todos/abc HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 15 {quot;titlequot;:quot;barquot;}
$ curl -i http://localhost:9292/todos/abc HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 15 {quot;titlequot;:quot;barquot;}
Auto-versioning
/:collection /:collection/:uuid /:collection/:uuid/versions /:collection/:uuid/versions/:etag
/:collection /:collection/:uuid /:collection/:uuid/versions /:collection/:uuid/versions/:etag
/:collection /:collection/:uuid /:collection/:uuid/versions /:collection/:uuid/versions/:etag
/:collection /:collection/:uuid /:collection/:uuid/versions /:collection/:uuid/versions/:etag
/:collection /:collection/:uuid /:collection/:uuid/versions /:collection/:uuid/versions/:etag
$ curl -i http://localhost:9292/todos
$ curl -i http://localhost:9292/todos HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;0aca58964aa2e15a9365d72dd4c43472quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 94 { quot;urisquot;:[ quot;/todos/abcquot;, quot;/todos/9216df80-0c7b-012c-af2e-0023dfa0a208quot; ], quot;totalquot;:2, quot;offsetquot;:0 }
Lost Update Problem:
Lost Update Problem: Solved
2 Users
2 Users 2 Browsers
2 Users 2 Browsers 1 Document
2 Users 2 Browsers 1 Document Fight!
2 Users 2 Browsers 1 Document Hand Wave!
$ curl -i -XPUT -d'{quot;titlequot;:quot;bazquot;}' http://localhost:9292/todos/abc
$ curl -i -XPUT -d'{quot;titlequot;:quot;bazquot;}' http://localhost:9292/todos/abc HTTP/1.1 400 Bad Request Cache-Control: no-cache Content-Type: application/json Content-Length: 25 {quot;errorquot;:quot;etag requiredquot;}
$ curl -i -XPUT -H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208' -d'{quot;titlequot;:quot;bazquot;}' http://localhost:9292/todos/abc
$ curl -i -XPUT -H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208' -d'{quot;titlequot;:quot;bazquot;}' http://localhost:9292/todos/abc HTTP/1.1 200 OK Cache-Control: no-cache Content-Type: application/json Content-Length: 126 { quot;okquot;:true, quot;uriquot;:quot;/todos/abcquot;, quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot; }
$ curl -i -XPUT -H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208' -d'{quot;titlequot;:quot;boxquot;}' http://localhost:9292/todos/abc
$ curl -i -XPUT -H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208' -d'{quot;titlequot;:quot;boxquot;}' http://localhost:9292/todos/abc HTTP/1.1 412 Precondition Failed Cache-Control: no-cache Content-Type: application/json Content-Length: 31 {quot;errorquot;:quot;precondition failedquot;}
$ curl -i http://localhost:9292/todos/abc/versions
$ curl -i http://localhost:9292/todos/abc/versions HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;f7aae4894429a39c7c3fe0c8ea9aa00equot; Link: <http://localhost:9292/todos/abc/versions/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 109 { quot;urisquot;:[ quot;/todos/abcquot;, quot;/todos/abc/versions/f4538ca0-0c7b-012caf2e-0023dfa0a208quot; ], quot;totalquot;:2, quot;offsetquot;:0 }
$ curl -i http://localhost:9292/todos/abc/versions HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;f7aae4894429a39c7c3fe0c8ea9aa00equot; Link: <http://localhost:9292/todos/abc/versions/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 109 { quot;urisquot;:[ quot;/todos/abcquot;, quot;/todos/abc/versions/f4538ca0-0c7b-012caf2e-0023dfa0a208quot; ], quot;totalquot;:2, quot;offsetquot;:0 }
Why _resolved?
O(n)
1000 documents = 1001 GETs
:-(
Time to rewrite in Scala?
$ curl -i http://localhost:9292/todos/abc/versions/_resolved
$ curl -i http://localhost:9292/todos/abc/versions/_resolved HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;ea2238f8f2da37b70f3d2f09464f166equot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;indexquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 384 { quot;documentsquot;:[ { quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abcquot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;bazquot;}quot; }, { quot;etagquot;:quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abc/versions/f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:15:49 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;barquot;}quot; } ], quot;totalquot;:2, quot;offsetquot;:0 }
$ curl -i http://localhost:9292/todos/abc/versions/_resolved HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;ea2238f8f2da37b70f3d2f09464f166equot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;indexquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 384 { quot;documentsquot;:[ { quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abcquot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;bazquot;}quot; }, { quot;etagquot;:quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abc/versions/f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:15:49 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;barquot;}quot; } ], quot;totalquot;:2, quot;offsetquot;:0 }
$ curl -i http://localhost:9292/todos/_resolved
$ curl -i http://localhost:9292/todos/_resolved HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;59edaebe03b5fe90fa59ef6de633afcequot; Link: <http://localhost:9292/todos>; rel=quot;indexquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 369 { quot;documentsquot;:[ { quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abcquot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;bazquot;}quot; }, { quot;etagquot;:quot;9216dde0-0c7b-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/9216df80-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:13:04 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;fooquot;}quot; } ], quot;totalquot;:2, quot;offsetquot;:0 }
$ curl -i -XDELETE -H'If-Match:55286040-0c7d-012c-af2e-0023dfa0a208' http://localhost:9292/todos/abc
$ curl -i -XDELETE -H'If-Match:55286040-0c7d-012c-af2e-0023dfa0a208' http://localhost:9292/todos/abc HTTP/1.1 200 OK Cache-Control: no-cache Content-Type: application/json Content-Length: 92 { quot;okquot;:true, quot;uriquot;:quot;/todos/abc/versions/55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;etagquot;: quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:33:50 GMTquot; }
$ curl -i -XDELETE -H'If-Match:55286040-0c7d-012c-af2e-0023dfa0a208' http://localhost:9292/todos/abc HTTP/1.1 200 OK Cache-Control: no-cache Content-Type: application/json Content-Length: 92 { quot;okquot;:true, quot;uriquot;:quot;/todos/abc/versions/55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;etagquot;: quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:33:50 GMTquot; }
$ curl -i http://localhost:9292/todos/abc
$ curl -i http://localhost:9292/todos/abc HTTP/1.1 410 Gone Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: no-cache Content-Type: application/json Content-Length: 37 {quot;errorquot;:quot;entity previously deletedquot;}
$ curl -i http://localhost:9292/todos/abc/versions
$ curl -i http://localhost:9292/todos/abc/versions HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;22116ccbc80e6356aec956be63c9c440quot; Link: <http://localhost:9292/todos/abc/versions/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 157 { quot;urisquot;:[ quot;/todos/abc/versions/55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;/todos/abc/versions/f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; ], quot;totalquot;:2, quot;offsetquot;:0 }
Uniform Interface
RESTful Collections
Addressable Nouns
Manipulate with HTTP Methods
Expose Relationships with Links
Fully Discoverable API
What’s Missing?
Ability to Ask Questions
Pagination /todos?page=2&limit=50
Querying /todos?user=http://joncrosby.me /todos?only=title
Uniform Interface
Uniform Interface ... for querying?
JSONQuery Kris Zyp http://www.sitepen.com/blog/2008/07/16/jsonquery-data-querying-beyond-jsonpath/
XPath
XPath=> JSONPath http://goessner.net/articles/JsonPath/
Array Slice Operators /todos[10:20]
Array Slice Operators /todos[10:20:2]
Comparisons /todos[?priority>=3]
Chained Expressions /todos[?priority>=3][0:5]
Extractions /todos[=name]
Sorting /todos[/priority][name]
Recursive Finders /todos[objectid..firstName]
Unions /todos[?foo=‘bar’,rating=4]
JSONQuery.js http://github.com/jcrosby/jsonquery
jquery.cloudkit.js http://github.com/jcrosby/jquery-cloudkit
var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
store.boot 1) Local collection per remote collection 2) Loads remote data
store.boot 1) Local collection per remote collection 2) Loads remote data
store.boot 1) Local collection per remote collection 2) Loads remote data
var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
// insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
// insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
// insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
// insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
// insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
// update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
// update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
// update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
// update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
// update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
Recovery 410 => Remove Locally? Create New?
Recovery 410 => Remove Locally? Create New? 412 => Progressive Diff/Merge
Recovery 410 => Remove Locally? Create New? 412 => Progressive Diff/Merge (Sync)
// delete the 'todo' todo.destroy({ success: function() { // the 'todo' has now been deleted } });
// delete the 'todo' todo.destroy({ success: function() { // the 'todo' has now been deleted } });
// delete the 'todo' todo.destroy({ success: function() { // the 'todo' has now been deleted } });
// delete the 'todo' todo.destroy({ success: function() { // the 'todo' has now been deleted } });
store.collection('todos').query(quot;?name='foo'quot;);
CloudKit
Johnson Ruby/JavaScript Bridge http://github.com/jbarnette/johnson
1.0 Roadmap
JSONSchema /:collection/_schema http://www.json.com/json-schema-proposal/
{ quot;descriptionquot;:quot;A personquot;, quot;typequot;:quot;objectquot;, quot;propertiesquot;: { quot;namequot;: { quot;typequot;:quot;stringquot; }, quot;agequot;: { quot;typequot;:quot;integerquot;, quot;maximumquot;:125 } } }
Open Web JSON Appliance
Open Web JSON Appliance
require ‘cloudkit’ expose :todos, :profiles
require ‘cloudkit’ contain :todos, :profiles
OpenID + OAuth + OAuth/Discovery
Browser OAuth OpenID Service
Browser OAuth OpenID Service
Browser {...} OAuth OpenID Service
Browser OAuth OpenID Service
Browser OAuth OpenID Service {...} Login
CloudKit
Browser OAuth OpenID Service
Browser OAuth OpenID Service
Browser OAuth OpenID Service
Service or Desktop App OAuth OpenID Service
Service or Desktop App OAuth OpenID Service
Service or Desktop App {...} OAuth OpenID Service
Service or Desktop App OAuth OpenID Service
Service or Desktop App OAuth OpenID Service {...} Login
curl -i http://localhost:9292/todos HTTP/1.1 401 Unauthorized Connection: close Date: Thu, 15 Jan 2009 22:24:23 GMT WWW-Authenticate: OAuth realm=quot;http://localhost:9292quot; Link: <http://localhost:9292/oauth/meta>; rel=quot;http://oauth.net/discovery/1.0/rel/providerquot; Content-Type: text/html Set-Cookie: rack.session=d6b1c6aa6d463a478eb9af0e921eb997; path=/; HttpOnly Content-Length: 1280 <!DOCTYPE html PUBLIC quot;-//W3C//DTD XHTML 1.0 Transitional//ENquot; quot;http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtdquot;> <html xmlns=quot;http://www.w3.org/1999/xhtmlquot; xml:lang=quot;enquot; lang=quot;enquot;> ... etc ...
$ curl -i http://localhost:9292/oauth/meta
$ curl -i http://localhost:9292/oauth/meta <?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?> <XRD> <Type>http://oauth.net/discovery/1.0</Type> <Service> <Type>http://oauth.net/discovery/1.0/rel/provider</Type> <URI>http://localhost:9292/oauth</URI> </Service> </XRD>
$ curl -i http://localhost:9292/oauth
(squint)
<?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?> <XRDS xmlns=quot;xri://$xrdsquot;> <XRD xml:id=quot;oauthquot; xmlns:simple=quot;http://xrds-simple.net/core/1.0quot; xmlns=quot;xri://$XRD*($v*2.0)quot; version=quot;2.0quot;> <Type>xri://$xrds*simple</Type> <Expires>2009-02-14T22:27:50Z</Expires> <Service priority=quot;10quot;> <Type>http://oauth.net/core/1.0/endpoint/request</Type> <Type>http://oauth.net/core/1.0/parameters/auth-header</Type> <Type>http://oauth.net/core/1.0/parameters/uri-query</Type> <Type>http://oauth.net/core/1.0/signature/PLAINTEXT</Type> <URI>http://localhost:9292/oauth/request_tokens</URI> </Service> <Service priority=quot;10quot;> <Type>http://oauth.net/core/1.0/endpoint/authorize</Type> <Type>http://oauth.net/core/1.0/parameters/uri-query</Type> <URI>http://localhost:9292/oauth/authorization</URI> </Service> <Service priority=quot;10quot;> <Type>http://oauth.net/core/1.0/endpoint/access</Type> <Type>http://oauth.net/core/1.0/parameters/auth-header</Type> <Type>http://oauth.net/core/1.0/parameters/uri-query</Type> <Type>http://oauth.net/core/1.0/signature/PLAINTEXT</Type> <URI>http://localhost:9292/oauth/access_tokens</URI> </Service> <Service priority=quot;10quot;> <Type>http://oauth.net/core/1.0/endpoint/resource</Type> <Type>http://oauth.net/core/1.0/parameters/auth-header</Type> <Type>http://oauth.net/core/1.0/parameters/uri-query</Type> <Type>http://oauth.net/core/1.0/signature/HMAC-SHA1</Type> </Service> <Service priority=quot;10quot;> <Type>http://oauth.net/discovery/1.0/consumer-identity/static</Type> <LocalID>cloudkitconsumer</LocalID> </Service> </XRD> <XRD xmlns=quot;xri://$XRD*($v*2.0)quot; version=quot;2.0quot;> <Type>xri://$xrds*simple</Type> <Service priority=quot;10quot;> <Type>http://oauth.net/discovery/1.0</Type> <URI>#oauth</URI> </Service> </XRD> </XRDS>
Service or Desktop App OAuth OpenID Service
Service or Desktop App OAuth OpenID Service
Service or Desktop App OAuth OpenID Service
Service or Desktop App OAuth OpenID Service
1.0
JSONQuery Release
JSONSchema Release
Templating
Done
CloudKit http://getcloudkit.com http://joncrosby.me

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CloudKit

  • 1. +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 +1 1
  • 4. Engine Yard Solo “The platform for on-demand management of your Ruby on Rails application in the cloud.”
  • 9. RESTful Collections of JSON Documents
  • 11. Ruby
  • 12. $ gem install cloudkit
  • 15. 2009
  • 18. Rails 3 => API
  • 19. framework = { :orm => AR :dispatcher => AD}.merge( :orm => YourORM)
  • 20. framework = { :orm => AR :dispatcher => AD}.merge( :orm => YourORM)
  • 21. framework = { :orm => AR :dispatcher => AD}.merge( :orm => YourORM)
  • 22. ! MVC
  • 23. ! MVC “in the back?”
  • 26. Resource Composition in the Browser A.S. Focus
  • 27. Resource Composition in the Browser A.S. Focus
  • 28. Resource Composition in the Browser A.S. Focus
  • 32. ESI Caching Layer REST Fragment A Service Client REST Fragment B Service
  • 35. Rack
  • 38. HTTP
  • 40. Intermediaries App HTTP
  • 41. Intermediaries App HTTP
  • 42. Intermediaries Rack HTTP
  • 44. HTTP
  • 47. Middleware App HTTP
  • 48. Rack is the Web
  • 53. REST
  • 54. Roy Fielding Architectural Styles and the Design of Network-based Software Architectures http://www.ics.uci.edu/~fielding/pubs/dissertation/rest_arch_style.htm
  • 58. Done
  • 60. $ curl -i http://localhost:9292/cloudkit-meta
  • 61. $ curl -i http://localhost:9292/cloudkit-meta HTTP/1.1 200 OK ETag: quot;5b6f484abf2d95cec3ea8867d1754418quot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 33 {quot;urisquot;:[quot;/todosquot;,quot;/profilesquot;]}
  • 62. $ curl -i -XOPTIONS http://localhost:9292/todos
  • 63. $ curl -i -XOPTIONS http://localhost:9292/todos HTTP/1.1 200 OK Content-Type: application/json Content-Length: 0 Allow: GET, HEAD, POST, OPTIONS
  • 64. $ curl -i http://localhost:9292/todos
  • 65. $ curl -i http://localhost:9292/todos HTTP/1.1 200 OK ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 32 {quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}
  • 66. $ curl -i http://localhost:9292/todos HTTP/1.1 200 OK ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 32 {quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}
  • 67. $ curl -i http://localhost:9292/todos HTTP/1.1 200 OK ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 32 {quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}
  • 68. $ curl -i http://localhost:9292/todos HTTP/1.1 200 OK ETag: quot;df392c5664e6ecd64b83210fb925f6c8quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 32 {quot;urisquot;:[],quot;totalquot;:0,quot;offsetquot;:0}
  • 69. Link Relations and HTTP Header Linking IETF Draft by Mark Nottingham http://tools.ietf.org/html/draft-nottingham-http-link-header-04
  • 70. Hypermedia as the Engine of Application State -- Fielding
  • 71. Connectedness -- Richardson, Ruby
  • 72. $ curl -i -XPOST -d'{quot;titlequot;:quot;fooquot;}' http://localhost:9292/todos
  • 73. $ curl -i -XPOST -d'{quot;titlequot;:quot;fooquot;}' http://localhost:9292/todos HTTP/1.1 201 Created Cache-Control: no-cache Content-Type: application/json Content-Length: 159 { quot;okquot;:true, quot;uriquot;:quot;/todos/9216df80-0c7b-012c-af2e-0023dfa0a208quot;, quot;etagquot;:quot;9216dde0-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:13:04 GMTquot; }
  • 76. Metadata + Document
  • 77. URI, ETag, Last-Modified, etc. + Document
  • 78. SQL
  • 79. ORM
  • 82. todos[“random_id”] = { “uri” => “/todos/abc”, “etag” => “9216dde0-0c7b-012c”, “last_modified” => “Thu, 16 Apr 2009 06:13:04 GMT”, “remote_user” => “http://joncrosby.me”, “json” => “{”title”:”foo”}”, ... }
  • 83. Rufus::Tokyo record = store.query { |q| q.add_condition(“uri”, :eql, “/todos/abc”) }
  • 86. HTTP and JSON are the Schema
  • 87. $ curl -i -XPUT -d'{quot;titlequot;:quot;barquot;}' http://localhost:9292/todos/abc
  • 88. $ curl -i -XPUT -d'{quot;titlequot;:quot;barquot;}' http://localhost:9292/todos/abc HTTP/1.1 201 Created Cache-Control: no-cache Content-Type: application/json Content-Length: 126 { quot;okquot;:true, quot;uriquot;:quot;/todos/abcquot;, quot;etagquot;:quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:15:49 GMTquot; }
  • 89. $ curl -i -XOPTIONS http://localhost:9292/todos/abc
  • 90. $ curl -i -XOPTIONS http://localhost:9292/todos/abc HTTP/1.1 200 OK Content-Type: application/json Content-Length: 0 Allow: GET, HEAD, PUT, DELETE, OPTIONS
  • 91. $ curl -i http://localhost:9292/todos/abc
  • 92. $ curl -i http://localhost:9292/todos/abc HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 15 {quot;titlequot;:quot;barquot;}
  • 93. $ curl -i http://localhost:9292/todos/abc HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 15 {quot;titlequot;:quot;barquot;}
  • 94. $ curl -i http://localhost:9292/todos/abc HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 15 {quot;titlequot;:quot;barquot;}
  • 95. $ curl -i http://localhost:9292/todos/abc HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 15 {quot;titlequot;:quot;barquot;}
  • 102. $ curl -i http://localhost:9292/todos
  • 103. $ curl -i http://localhost:9292/todos HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:15:49 GMT ETag: quot;0aca58964aa2e15a9365d72dd4c43472quot; Link: <http://localhost:9292/todos/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 94 { quot;urisquot;:[ quot;/todos/abcquot;, quot;/todos/9216df80-0c7b-012c-af2e-0023dfa0a208quot; ], quot;totalquot;:2, quot;offsetquot;:0 }
  • 108. 2 Users 2 Browsers 1 Document
  • 109. 2 Users 2 Browsers 1 Document Fight!
  • 110. 2 Users 2 Browsers 1 Document Hand Wave!
  • 111. $ curl -i -XPUT -d'{quot;titlequot;:quot;bazquot;}' http://localhost:9292/todos/abc
  • 112. $ curl -i -XPUT -d'{quot;titlequot;:quot;bazquot;}' http://localhost:9292/todos/abc HTTP/1.1 400 Bad Request Cache-Control: no-cache Content-Type: application/json Content-Length: 25 {quot;errorquot;:quot;etag requiredquot;}
  • 113. $ curl -i -XPUT -H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208' -d'{quot;titlequot;:quot;bazquot;}' http://localhost:9292/todos/abc
  • 114. $ curl -i -XPUT -H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208' -d'{quot;titlequot;:quot;bazquot;}' http://localhost:9292/todos/abc HTTP/1.1 200 OK Cache-Control: no-cache Content-Type: application/json Content-Length: 126 { quot;okquot;:true, quot;uriquot;:quot;/todos/abcquot;, quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot; }
  • 115. $ curl -i -XPUT -H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208' -d'{quot;titlequot;:quot;boxquot;}' http://localhost:9292/todos/abc
  • 116. $ curl -i -XPUT -H'If-Match:f4538ca0-0c7b-012c-af2e-0023dfa0a208' -d'{quot;titlequot;:quot;boxquot;}' http://localhost:9292/todos/abc HTTP/1.1 412 Precondition Failed Cache-Control: no-cache Content-Type: application/json Content-Length: 31 {quot;errorquot;:quot;precondition failedquot;}
  • 117. $ curl -i http://localhost:9292/todos/abc/versions
  • 118. $ curl -i http://localhost:9292/todos/abc/versions HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;f7aae4894429a39c7c3fe0c8ea9aa00equot; Link: <http://localhost:9292/todos/abc/versions/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 109 { quot;urisquot;:[ quot;/todos/abcquot;, quot;/todos/abc/versions/f4538ca0-0c7b-012caf2e-0023dfa0a208quot; ], quot;totalquot;:2, quot;offsetquot;:0 }
  • 119. $ curl -i http://localhost:9292/todos/abc/versions HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;f7aae4894429a39c7c3fe0c8ea9aa00equot; Link: <http://localhost:9292/todos/abc/versions/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 109 { quot;urisquot;:[ quot;/todos/abcquot;, quot;/todos/abc/versions/f4538ca0-0c7b-012caf2e-0023dfa0a208quot; ], quot;totalquot;:2, quot;offsetquot;:0 }
  • 121. O(n)
  • 122. 1000 documents = 1001 GETs
  • 123. :-(
  • 124. Time to rewrite in Scala?
  • 125. $ curl -i http://localhost:9292/todos/abc/versions/_resolved
  • 126. $ curl -i http://localhost:9292/todos/abc/versions/_resolved HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;ea2238f8f2da37b70f3d2f09464f166equot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;indexquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 384 { quot;documentsquot;:[ { quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abcquot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;bazquot;}quot; }, { quot;etagquot;:quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abc/versions/f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:15:49 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;barquot;}quot; } ], quot;totalquot;:2, quot;offsetquot;:0 }
  • 127. $ curl -i http://localhost:9292/todos/abc/versions/_resolved HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;ea2238f8f2da37b70f3d2f09464f166equot; Link: <http://localhost:9292/todos/abc/versions>; rel=quot;indexquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 384 { quot;documentsquot;:[ { quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abcquot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;bazquot;}quot; }, { quot;etagquot;:quot;f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abc/versions/f4538ca0-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:15:49 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;barquot;}quot; } ], quot;totalquot;:2, quot;offsetquot;:0 }
  • 128. $ curl -i http://localhost:9292/todos/_resolved
  • 129. $ curl -i http://localhost:9292/todos/_resolved HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;59edaebe03b5fe90fa59ef6de633afcequot; Link: <http://localhost:9292/todos>; rel=quot;indexquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 369 { quot;documentsquot;:[ { quot;etagquot;:quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/abcquot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:25:41 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;bazquot;}quot; }, { quot;etagquot;:quot;9216dde0-0c7b-012c-af2e-0023dfa0a208quot;, quot;uriquot;:quot;/todos/9216df80-0c7b-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:13:04 GMTquot;, quot;documentquot;:quot;{quot;titlequot;:quot;fooquot;}quot; } ], quot;totalquot;:2, quot;offsetquot;:0 }
  • 130. $ curl -i -XDELETE -H'If-Match:55286040-0c7d-012c-af2e-0023dfa0a208' http://localhost:9292/todos/abc
  • 131. $ curl -i -XDELETE -H'If-Match:55286040-0c7d-012c-af2e-0023dfa0a208' http://localhost:9292/todos/abc HTTP/1.1 200 OK Cache-Control: no-cache Content-Type: application/json Content-Length: 92 { quot;okquot;:true, quot;uriquot;:quot;/todos/abc/versions/55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;etagquot;: quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:33:50 GMTquot; }
  • 132. $ curl -i -XDELETE -H'If-Match:55286040-0c7d-012c-af2e-0023dfa0a208' http://localhost:9292/todos/abc HTTP/1.1 200 OK Cache-Control: no-cache Content-Type: application/json Content-Length: 92 { quot;okquot;:true, quot;uriquot;:quot;/todos/abc/versions/55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;etagquot;: quot;55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;last_modifiedquot;:quot;Thu, 16 Apr 2009 06:33:50 GMTquot; }
  • 133. $ curl -i http://localhost:9292/todos/abc
  • 134. $ curl -i http://localhost:9292/todos/abc HTTP/1.1 410 Gone Link: <http://localhost:9292/todos/abc/versions>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/versionsquot; Cache-Control: no-cache Content-Type: application/json Content-Length: 37 {quot;errorquot;:quot;entity previously deletedquot;}
  • 135. $ curl -i http://localhost:9292/todos/abc/versions
  • 136. $ curl -i http://localhost:9292/todos/abc/versions HTTP/1.1 200 OK Last-Modified: Thu, 16 Apr 2009 06:25:41 GMT ETag: quot;22116ccbc80e6356aec956be63c9c440quot; Link: <http://localhost:9292/todos/abc/versions/_resolved>; rel=quot;http://joncrosby.me/cloudkit/1.0/rel/resolvedquot; Cache-Control: proxy-revalidate Content-Type: application/json Content-Length: 157 { quot;urisquot;:[ quot;/todos/abc/versions/55286040-0c7d-012c-af2e-0023dfa0a208quot;, quot;/todos/abc/versions/f4538ca0-0c7b-012c-af2e-0023dfa0a208quot; ], quot;totalquot;:2, quot;offsetquot;:0 }
  • 144. Ability to Ask Questions
  • 148. Uniform Interface ... for querying?
  • 149. JSONQuery Kris Zyp http://www.sitepen.com/blog/2008/07/16/jsonquery-data-querying-beyond-jsonpath/
  • 150. XPath
  • 152. Array Slice Operators /todos[10:20]
  • 153. Array Slice Operators /todos[10:20:2]
  • 162. var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
  • 163. var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
  • 164. var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
  • 165. store.boot 1) Local collection per remote collection 2) Loads remote data
  • 166. store.boot 1) Local collection per remote collection 2) Loads remote data
  • 167. store.boot 1) Local collection per remote collection 2) Loads remote data
  • 168. var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
  • 169. var store = $.cloudkit; store.boot({ success: function() { // do something }, error: function(status) { // fail gracefully } });
  • 170. // insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
  • 171. // insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
  • 172. // insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
  • 173. // insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
  • 174. // insert a 'todo' store.collection('todos').create({name:quot;fooquot;}, { success: function(todo) { // do something with the todo alert(todo.json().name); } });
  • 175. // update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
  • 176. // update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
  • 177. // update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
  • 178. // update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
  • 179. // update the 'todo' todo.update({name:quot;barquot;} { success: function() { // updated remotely, ready for use alert(todo.json().name); // now “bar” }, error: function(status) { // fail gracefully or recover } });
  • 180. Recovery 410 => Remove Locally? Create New?
  • 181. Recovery 410 => Remove Locally? Create New? 412 => Progressive Diff/Merge
  • 182. Recovery 410 => Remove Locally? Create New? 412 => Progressive Diff/Merge (Sync)
  • 183. // delete the 'todo' todo.destroy({ success: function() { // the 'todo' has now been deleted } });
  • 184. // delete the 'todo' todo.destroy({ success: function() { // the 'todo' has now been deleted } });
  • 185. // delete the 'todo' todo.destroy({ success: function() { // the 'todo' has now been deleted } });
  • 186. // delete the 'todo' todo.destroy({ success: function() { // the 'todo' has now been deleted } });
  • 189. Johnson Ruby/JavaScript Bridge http://github.com/jbarnette/johnson
  • 191. JSONSchema /:collection/_schema http://www.json.com/json-schema-proposal/
  • 192. { quot;descriptionquot;:quot;A personquot;, quot;typequot;:quot;objectquot;, quot;propertiesquot;: { quot;namequot;: { quot;typequot;:quot;stringquot; }, quot;agequot;: { quot;typequot;:quot;integerquot;, quot;maximumquot;:125 } } }
  • 197. OpenID + OAuth + OAuth/Discovery
  • 198. Browser OAuth OpenID Service
  • 199. Browser OAuth OpenID Service
  • 200. Browser {...} OAuth OpenID Service
  • 201. Browser OAuth OpenID Service
  • 202. Browser OAuth OpenID Service {...} Login
  • 204. Browser OAuth OpenID Service
  • 205. Browser OAuth OpenID Service
  • 206. Browser OAuth OpenID Service
  • 207. Service or Desktop App OAuth OpenID Service
  • 208. Service or Desktop App OAuth OpenID Service
  • 209. Service or Desktop App {...} OAuth OpenID Service
  • 210. Service or Desktop App OAuth OpenID Service
  • 211. Service or Desktop App OAuth OpenID Service {...} Login
  • 212. curl -i http://localhost:9292/todos HTTP/1.1 401 Unauthorized Connection: close Date: Thu, 15 Jan 2009 22:24:23 GMT WWW-Authenticate: OAuth realm=quot;http://localhost:9292quot; Link: <http://localhost:9292/oauth/meta>; rel=quot;http://oauth.net/discovery/1.0/rel/providerquot; Content-Type: text/html Set-Cookie: rack.session=d6b1c6aa6d463a478eb9af0e921eb997; path=/; HttpOnly Content-Length: 1280 <!DOCTYPE html PUBLIC quot;-//W3C//DTD XHTML 1.0 Transitional//ENquot; quot;http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtdquot;> <html xmlns=quot;http://www.w3.org/1999/xhtmlquot; xml:lang=quot;enquot; lang=quot;enquot;> ... etc ...
  • 213. $ curl -i http://localhost:9292/oauth/meta
  • 214. $ curl -i http://localhost:9292/oauth/meta <?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?> <XRD> <Type>http://oauth.net/discovery/1.0</Type> <Service> <Type>http://oauth.net/discovery/1.0/rel/provider</Type> <URI>http://localhost:9292/oauth</URI> </Service> </XRD>
  • 215. $ curl -i http://localhost:9292/oauth
  • 217. <?xml version=quot;1.0quot; encoding=quot;UTF-8quot;?> <XRDS xmlns=quot;xri://$xrdsquot;> <XRD xml:id=quot;oauthquot; xmlns:simple=quot;http://xrds-simple.net/core/1.0quot; xmlns=quot;xri://$XRD*($v*2.0)quot; version=quot;2.0quot;> <Type>xri://$xrds*simple</Type> <Expires>2009-02-14T22:27:50Z</Expires> <Service priority=quot;10quot;> <Type>http://oauth.net/core/1.0/endpoint/request</Type> <Type>http://oauth.net/core/1.0/parameters/auth-header</Type> <Type>http://oauth.net/core/1.0/parameters/uri-query</Type> <Type>http://oauth.net/core/1.0/signature/PLAINTEXT</Type> <URI>http://localhost:9292/oauth/request_tokens</URI> </Service> <Service priority=quot;10quot;> <Type>http://oauth.net/core/1.0/endpoint/authorize</Type> <Type>http://oauth.net/core/1.0/parameters/uri-query</Type> <URI>http://localhost:9292/oauth/authorization</URI> </Service> <Service priority=quot;10quot;> <Type>http://oauth.net/core/1.0/endpoint/access</Type> <Type>http://oauth.net/core/1.0/parameters/auth-header</Type> <Type>http://oauth.net/core/1.0/parameters/uri-query</Type> <Type>http://oauth.net/core/1.0/signature/PLAINTEXT</Type> <URI>http://localhost:9292/oauth/access_tokens</URI> </Service> <Service priority=quot;10quot;> <Type>http://oauth.net/core/1.0/endpoint/resource</Type> <Type>http://oauth.net/core/1.0/parameters/auth-header</Type> <Type>http://oauth.net/core/1.0/parameters/uri-query</Type> <Type>http://oauth.net/core/1.0/signature/HMAC-SHA1</Type> </Service> <Service priority=quot;10quot;> <Type>http://oauth.net/discovery/1.0/consumer-identity/static</Type> <LocalID>cloudkitconsumer</LocalID> </Service> </XRD> <XRD xmlns=quot;xri://$XRD*($v*2.0)quot; version=quot;2.0quot;> <Type>xri://$xrds*simple</Type> <Service priority=quot;10quot;> <Type>http://oauth.net/discovery/1.0</Type> <URI>#oauth</URI> </Service> </XRD> </XRDS>
  • 218. Service or Desktop App OAuth OpenID Service
  • 219. Service or Desktop App OAuth OpenID Service
  • 220. Service or Desktop App OAuth OpenID Service
  • 221. Service or Desktop App OAuth OpenID Service
  • 222. 1.0
  • 226. Done

Editor's Notes