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GW2Spidy - Trade Market Graphs

This project aims to provide you with graphs of the sale and buy listings of items on the Guild Wars 2 Trade Market.

How does it work?

ArenaNet has built the Trade Market so that it's loaded into the game from a website.
You can also access this website with a browser and use your game account to login and view all the items and listings.

Now what I've built are some tools which will run constantly to automatically login to that website and record all data we can find, as a result I can record the sale listings for all the items about every hour and with that data I can create graphs with the price changing over time!


Everyone is very much welcome to contribute, 99% chance you're reading this on github so it shouldn't be too hard to fork and do pull requests right :) ?

If you need any help with setup of the project or using git(hub) then just contact me and I'll be glad to help you!
If you want a dump of the database, since that's a lot easier to work with, then just contact me ;)

Feedback / Help

If you need help or have any feedback, you can contact me on or join me on #gw2spidy Drakie

Date/time data

As usual I didn't really think about timezones when I started this project, but now that multiple people forked the project and that I'm exporting data to some people it suddenly matters ... All data is stored in the server's timezone, however I've made sure that data going out (charts and API) are converted to UTC (and Highcharts converts it to the browsers timezone).

Mailing List

Please join the Google Groups Mailing List for gw2spidy so that I can keep you up-to-date of any (major) changes / new versions of the Codebase!

Environment setup

The easiest way of getting started is by using Vagrant. This method will provide you with a local virtual machine with a running instance of gw2spidy in a single command. For this to work you will need three things: Virtualbox, Ruby, and the Vagrant gem. Once you have this, simply cd into the gw2spidy directory and run vagrant up. This will fetch the base virtual machine for developing (a Ubuntu Precise 64bit server), install all of the required packages, configure mysql and nginx, then forward the virtual machine's port 80 to your machine's port 8080. When it's finished, visit localhost:8080 in a browser and you're ready to go. Note that this does only some of the crawling required to populate the database. To continue the setup, go to "Crawling the Tradingpost".

Alternatively, follow the steps below:

I'll provide you with some short setup instructions to make your life easier if you want to run the code for yourself or contribute. There's also a INSTALL file which contains a snippet I copy paste when I setup my VM, it should suffice ;-)

A LOT has changed and most likely will continue a while longer

Join the IRC channel and we can talk!
Me (Drakie) and other people already involved for a while are happy to share our knowledge and help you, specially if you consider contributing!


I run the project on a linux server and many of the requirements might not be available on windows and I have only (a tiny bit) of (negative) experience with windows.
If you want to run this on a windows machine, for development purposes, then I strongly suggest you just run a virtual machine with linux (vmware player is free and works pretty nice).
If you make your way to the IRC channel I have a VM image on my google drive (made by Marthisdil) with everything setup and ready to roll ;)

PHP 5.3

You'll need PHP5.3 or higher for the namespace support etc.
You'll need the following extensions installed:

  • php5-curl
  • php5-mysql
  • php5-memcache

MySQL / Propel

I think 4.x will suffice, though I run 5.x.
On the PHP side of things I'm using PropelORM, thanks to that you could probably switch to PostgreSQL or MSSQL easily if you have to ;)

Apache / Nginx / CLI

The project will work fine with both Apache or Nginx (I actually run apache on my dev machine and nginx in production), you can find example configs in the docs folder of this project.
If you want to run the code that spiders through the trade market then you'll need command line access, if you just want to run the frontend code (and get a database dump from me) then you can live without ;)

On a clean install you might need to enable apache rewrite with the command: a2enmod rewrite


Using memcache daemon and PHP Memcache lib to easily cache some stuff in memory (item and type data).
However, everything will work fine without memcache, if you have memcache installed but don't want the project to use it then define MEMCACHED_DISABLED in your and set it to true.
You DO need the php5-memcache library, but it won't use memcache for anything ;)

Note that you need php5-memcache not php5-memcached
Note that you need to have the memcache extension, even if you don't want to use it!


The spidering code uses a custom brew queue and some custom brew system to make sure we don't do more then x amount of requests.
Both the queue and the slots are build using Redis (Predis library is already included in the vendor folder).
Previously I was using MySQL for this, but using MySQL was a lot heavier on load and using Redis it's also slightly faster!

You need to install redis-server and it needs to be version 2.2 or higher
If you're using debian you need to build from source, ubuntu has an updated package with apt-get ;-)

Silex / Twig / Predis

Just some PHP libs, already included in the vendor folder.

jQuery / Highcharts / Twitter Bootstrap

Just some HTML / JS / CSS libs, already included in webroot/assets/vendor folder.

You will need the pear library Log

pear channel-discover
pear install phing/phing
pear install Log

Node.js and grunt

While Node.js and grunt are not directly needed for running gw2spidy, grunt is needed to build the js and css files that are served with the web pages. That means you don't need node on your webserver, but can do the grunt tasks on any other macine as long as you copy the files in webroot/assets/compiled over to the same directory on the web server.

Install Node.js via the usual installation mechanism for your OS. Afterwards run npm insall -g grunt to globally install grunt on the machine.

Project Setup


ArenaNet is okay with me doing this, but nonetheless I want to limit the amount of requests I'm shooting at their website or at least spread them out a bit. I came up with this concept of 'request slots', I setup an x amount of slots, claim one when I do a request and then give it a cooldown before I can use it again. That way I can control the flood a bit better, from the technical side this is done using Redis sorted sets.

Background Queues

All crawling work is done in background process / daemons and the heavy lifting is done with a few queues, the queues process also handles the previously mentioned request slots. This is also done using Redis sorted sets.

Config / Env

Think of a name that represents your machine / evn, eg ruben-vm1 or gw2spidy-prod-vps2.
Copy the config/cnf/example-custom-cnf.json to config/cnf/<your-chosen-name>.json and edit it to set the values for auth_email and auth_password.

Copy config/cnf/example-env to config/cnf/env and edit it, it contains a line for each config file it should load from config/cnf/<name>.json
Replace the first line (ruben-vm1) with the name you had previously chosen, leave the dev and default, those are other config files it should load too (or change dev to prod if you don't want debug mode.

The config files you specify config/cnf/env will be loaded (in reverse order), overwriting the previous ones. For overloading other config values (like database login etc.), check config/cnf/default.json for all options which you could also se in your custom config file.

The config/cnf/env and any config/cnf/*.json other then default.json, dev.json and prod.json are on .gitignore so they won't be versioned controlled

Database Setup

In the config folder there's a config/schema.sql (generated by propel based of config/schema.xml, so database changes should be made to the XML and then generating the SQL file!).
You should create a database called 'gw2spidy' and load the config/schema.sql in. Afterwards import config/itemTypesAndDisciplines.sql to get certain stable Disciplines and item types.

RequestSlots Setup

Run tools/setup-request-slots.php to create the initial request slots, you can also run this during development to reinitiate the slots so you can instantly use them again if they are all on cooldown.

Building The Item Database

The scripts described below are called by the script bin/

To build the item database, you want to run tools/update-items-from-api.php. This gives you all known items in the game and creates new types and subtypes on the fly.

Afterwards you may want to run the script nightly to keep up to date with known items.

If you want or need the recipe data in the database, you also need to run php tools/create-recipe-map /some/place/on/harddrive. After this is complete, you also have to import the map with php tools/import-recipe-map /some/place/on/harddrive.

Creating the web assets

gw2spidy serves js and css files in a single file and (depending on the configuration) minified. To build these files, you simply need to run grunt.

Crawling The Tradingpost

ItemListingDB Worker

The ItemListingDB Worker itself is this script: daemons/worker-queue-item-listing-db.php.
It will pop items off the listing queue and process them, these queue-items are automatically requeue'd with their priority so you should only have to run daemons/fill-queue-item-listing-db.php once to get the initial batch in.
Since the v2/commerce APIs are enabled, the worker uses the v2/commerce/listings endpoint to process the configured 'items-per-request' amount of items at 1 time (max 250!).

However if the script fails we might sometimes loose a queue-item or new items might be added to the database at some point so there's a daemons/supervise-queue-item-listing-db.php script which makes sure that the queue is still filled properly.

There's a priority system in place so that some items (like weapons above certain rarity / level) are processed more often then others (like salvage kits, which nobody buys from the TP ...).
See the Priority System section below for more info on that!

Gem Worker

The daemons/worker-gem.php script does 2 requests to the gem-exchange GW2-API to retrieve the exchange rates and volume and then sleeps for 180 seconds (3 minutes).

Running The Workers

The workers all do 100 loops to do their specific task or if no tasks they do short sleeps waiting for a task.
They will also sleep if there are no slots available.

Previously I used to run 4 workers in parallel using while [ true ]; do php daemons/worker-queue-item-listing-db.php >> /var/log/gw2spidy/worker.1.log; echo "restart"; done;
Where I replace the .1 with which number of the 4 it is so I got 4 logs to tail.

I now added some bash scripts in the bin folder to bin/ <num-listing-workers> <num-gem-workers> and bin/ <now> to manage them.
You should check the bash scripts and understand them before running them imo ;) but you could also trust me on my blue eyes and just run it xD

Priority System

The amount of requests we do are limited by our requestslot system, unfortunatly we're now bound by doing 1 item per request (previously we could combine up to 250).
So I created a priority system to process 'important' items more often, in the this spreadsheet I calculated the priorities:

this has been changed slightly, I need to update the spreadsheet and should write some stuff here soon

GW2 Sessions (obsolete)

When spidering we used to access the tradingpost using a session created by logging into
After logging in it gives us a session_key which allows access to the tradingpost, however limited to only being able to get the lists of items!

When you open the tradingpost from inside the game you access it using a session_key generated from the game login, these sessions have access to more features of the tradingpost!
With that session you can also see the list of offers for the various prices, instead of only the lowest sell and highest buy!
For the gem-exchange the ingame session_key allows you to calculate conversions, while the session only gives you a rounded average (which is kinda useless).

As of late ArenaNet has messed up the item lists (search results and such) to be very unaccurate (due to caching), you can also see this ingame.
I also want to collect gem-exchange data ...
So I needed a way to be able to use an ingame session_key when spidering!

You can intercept the session_key by either using Fiddle2r to intercept the HTTPS trafic or using some custom tools to grab the URLs from share memory ...
I've added a table to the database named gw2session and a form on /admin/session to insert the ingame session_key, it requires you to also fill in a 'secret' which is equal to what you configure in the config or not required on dev envs

I don't know exactly what you can do with someone elses session_key thus I rely on myself not slacking and updating the session_key regularly and will not accept other people giving me their session_key!
I know for a fact that combined with a charid you can place buy orders and such from outside of the game, so you should be careful with this information ;)

I do have a small tool (provided by someone else) that quickly grabs the session_key (by seaching for it in shared memory) without much hassle, I won't be sharing it publicly but you could consider joining the IRC channel and asking for it ;)

Copyright and License

Copyright (c) 2012, Ruben de Vries
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.


The views and conclusions contained in the software and documentation are those of the authors and should not be interpreted as representing official policies, either expressed or implied, of the gw2spidy project.

Copyright and License - Apendix

The above BSD license will allow you to use this open source project for anything you like.
However, I would very much appreciate it when you decide to use the code if you could contribute your improvements back to this project and / or contact me so that I'm aware (and proud) of my project being used by other people too :-)