From fe3492a98de29942477b061cd02c92246f4bf85a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lo=C3=AFc=20Hoguin?= Date: Mon, 28 Mar 2016 15:36:42 +0200 Subject: Initial commit, new website system --- talks/farwest/farwest.html | 438 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 438 insertions(+) create mode 100644 talks/farwest/farwest.html (limited to 'talks/farwest/farwest.html') diff --git a/talks/farwest/farwest.html b/talks/farwest/farwest.html new file mode 100644 index 00000000..c39cdae6 --- /dev/null +++ b/talks/farwest/farwest.html @@ -0,0 +1,438 @@ + + + + + +Leverage the World Wide West with Farwest + + + + + + + + + + + + + + + + + + + + +
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Leverage the World Wide West with Farwest

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Coming soon to a desert near you.

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Loïc Hoguin - @lhoguin

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Erlang Cowboy and Nine Nines Founder

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How soon?

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  • Farwest is the result of months of research
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  • It still needs a few months of development
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  • Early feedback is more than welcome
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Current solutions in Erlang

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Nitrogen

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  • Web development for Erlang developers
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  • HTML built using Erlang records
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  • Built-in JS for many components and actions
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ChicagoBoss

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  • Erlang development for Rails developers
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  • ErlyDTL templates
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  • No constraints on frontend libraries used
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Zotonic

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  • The Erlang CMS
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  • Big plugin-based architecture, with ErlyDTL templates
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  • Many constraints on how the development should be done
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Lightweight server solution

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  • Choose your own adventure server
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  • No constraint on any frontend or backend libraries
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  • A lot more work to set everything up
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Problems

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Erlang developers suck at Frontend

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  • They know how to write code, not UI
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  • Writing HTML in Erlang doesn't make them better
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  • UIs created by Erlang developers generally suck
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  • The Erlang developer should never touch frontend code
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Frontend developers and Erlang

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  • They don't know what Erlang is
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  • They just need templates and assets
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  • They need to be able to write or update the templates
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  • They should do so without any Erlang knowledge
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They have different concerns

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  • These concerns shouldn't overlap
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  • They need a common language to exchange information
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REST is the key

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  • Erlang developers know REST
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  • Frontend developers already use REST APIs
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  • Make REST the common language between both sides
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Farwest

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Farwest for Erlang developers

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  • Strictly work only on backend logic
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  • No HTML, CSS or JS; it's the Frontend guy's job!
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  • REST API developer
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  • Get data in and out, that's it
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  • Same old Cowboy REST development you're used to do
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Farwest is for Frontend developers

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  • Because they make your app pretty and easy to use
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  • None of the following Farwest features require Erlang knowledge
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Installation and setup

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  • Install Erlang
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  • Download and untar a blank project template
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  • Start the server with ./start.sh
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  • This gives you a link to the integrated development interface
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Continuous development

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  • Automatic code recompilation and reload
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  • Including templates, CSS and JS
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  • Only a refresh of the page is needed to view the changes
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Built for REST

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  • Development tools for REST, with a Web UI
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  • Javascript libraries to simplify REST manipulation
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  • Crawlers can still retrieve your content using GET
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Backend API documentation

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  • Automatically generated
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  • Partially built using the resources exports
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  • Partially built from the edoc comments
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  • Available through the API explorer tool
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Bullet enabled

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  • Always connected bidirectional stream with the server
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  • Receive server events as soon as they happen
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  • Events are mapped to JS callbacks
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  • Reply directly without opening a new connection
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REST over Bullet

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  • Call the API over the Bullet stream
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  • Request is sent as JSON, converted to a Req object, then dispatched
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  • Request is asynchronous, similar to jQuery.ajax()
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Routing

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  • Uses Cowboy's dispatch list mechanism
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  • Includes a tool for configuring the dispatch list
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  • Dispatch list is reloaded live
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Quick application scaffolding

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  • Predefined API enabled by default
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  • /data/: direct data storage access
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  • /dispatch/: direct dispatch list access
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  • /env/: direct environment data access
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  • /farwest/: development tools Web UI
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Map URIs to data

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  • Map a URI to a scaffolding resource handler
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  • Resource handler receives a list of data queries
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  • URI components and query string can be used in queries
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  • Templates receive the queried data
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  • Configurable using the dispatch and query Web UIs
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Not just scaffolding

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  • You can choose to keep these features enabled
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  • After adding some authentication of course
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  • They let the end user extend your application
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  • Like a wiki, but with separate data and templates
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Remember?

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  • None of this requires Erlang knowledge
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  • They can write their application without knowing Erlang
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  • They can write their application before the backend is ready
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  • They may not even need a custom backend API
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Farwest is still Erlang

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  • Concurrent
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  • Fault-tolerant
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  • Easily distributed
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  • And one more thing...
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Live frontend upgrades

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  • Available as part of release upgrades
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  • Upgrade the page's CSS, JS or media files live
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  • When not possible, a callback can be called instead
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  • This one obviously requires an Erlang developer
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Technical overview

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Modular Farwest

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  • Base Farwest contains the core, tools and scaffolding
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  • Plugins are rebar dependencies
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  • Write your application as a standard OTP application
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  • Or write many Farwest plugins for reusability
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Farwest plugins

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  • Plugins are OTP applications
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  • At startup, plugins register themselves with Farwest
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  • They provide resources, OTP services, assets, tools
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OTP compliant

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  • Generate OTP releases of your applications
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  • Upgrade Farwest or its plugins
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  • Connect several Farwest nodes
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Made for the web

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  • Automatic minifying and merging of CSS/JS files
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  • User authentication (plugins)
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  • Internationalization and unicode support
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Dependencies

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  • Cowboy, Bullet, Sheriff, Goldrush/Saloon
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  • ErlyDTL, JSX
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  • Gproc
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  • Bootstrap, jQuery
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  • Undecided storage backend
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Undependencies

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  • You don't have to use most dependencies
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  • Farwest does not enforce how you build the application
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License

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  • ISC License (BSD simplified)
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  • Same as Cowboy
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Timeline

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  • March 29th, 2012: This talk
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  • April 2nd, 2012: First commits
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  • EUC, 2012: Alpha
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  • London, 2012: Beta
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You can help

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  • Follow the project
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  • Try it out as soon as it becomes available
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  • Send patches
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  • Sponsor the project
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Links

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  • https://github.com/extend/farwest
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  • http://ninenines.eu
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  • #erlounge on Freenode
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Questions?

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