eidolon/README.md
2016-01-05 02:26:20 +01:00

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#eidolon
##Introduction
A image gallery service written in Haskell as a yesod webapp.
Visit the test instance at [eidolon.nek0.eu][eidolon]
##Installation
###Dependencies
####Build dependencies
A working Haskell capable environment. For that you will need `haskell-stack` and `cabal-install`, which you can install with:
```bash
sudo apt-get install haskell-stack cabal-install
```
Shouldn't stack be available through your package repositories you can get it [here][stack].
Now you can set up your stack with `stack setup` and follow its instructions. This will install the latest GHC Haskell compiler on your system.
update your package list with
```bash
cabal update
```
and upgrade `cabal-install`, if necessary with the command
```bash
cabal install cabal-install
```
Now you should add `~/.cabal/bin` to your `PATH` environment variable.
Additionally to Haskell and its dependencies you will need the following software and libraries:
* alex
* happy
* libmagick++-dev
* libpq-dev
* postgresql
* libmagickwand-dev
which can be installed through
```bash
cabal install alex happy
sudo apt-get install libmagick++-dev libpq-dev postgresql libmagickwand-dev
```
####Elasticsearch dependencies
Since version 0.0.5 there is an Elasticsearch integration for Eidolon. To Be able to run eidolon , you need to install `elasticsearch` additionally with:
```bash
sudo apt-get install elasticsearch
```
On how to configure your elasticsearch server, look into the [elasticsearch documentation][elasticdocu].
###Building
get the source with
```bash
git clone https://github.com/nek0/eidolon.git
```
build the source with
```bash
stack build
```
##Deploying
After compiling you will find an executable called `eidolon` in `.stack-work/dist/<arch>/Cabal-<version>/build/eidolon/`, where `<arch>` is your system architecture and `<version>` your current cabal version. Copy or link it anywhere you want. The executable needs to be accompanied by the folders `config` and `static` and their contents. It's best to copy them to your desired destination.
Also check `config/settings.yml` and set the values there accrding to your configuration. Especially the settings for elasticsearch are vital.
It may also be necessery to create a reverse proxy to your gallery. I would recommend using [nginx](http://nginx.org/).
##Customizing
Unfortunately the gallery is not highly customizable, but you can change most of its appearance by changing the files `static/css/static-*.css`. Especially the default background image can be changed by replacing `static/css/img/bg.jpg`.
##Starting
You can start the gallery now by running the executable. You need to provide a settings file, normally found in `config/settings.yml`
Since eidolon will block your console, I recommend wrapping a init-script around it. how you can do that is written in my [blog](http://nek0.eu/posts/2014-10-23-Daemonize-a-yesod-app.html).
##Migrations
###0.0.3-0.0.4
* do not start or restart your eidolon service before migration
* run migration script from your run location (where your `static` folder with all the images is located)
* if you are building in a sandbox run `runghc -package-db/full/path/to/sandbox/XXX-ghc-version-packages.conf.d /path/to/eidolon/Migrations/0.0.3-0.0.4/Migration.hs`
* Note: No space between the option `-package-db` and its argument
* without sandbox: `runghc /path/to/eidolon/Migrations/0.0.3-0.0.4/Migration.hs`
* start or restart your eidolon service
###0.0.4-0.0.5
* run migration script from your run location (where your `static` folder with all the images is located)
* if you are building in a sandbox run `runghc -package-db/full/path/to/sandbox/XXX-ghc-version-packages.conf.d /path/to/eidolon/Migrations/0.0.4-0.0.5/Migration.hs`
* Note: No space between the option `-package-db` and its argument
* without sandbox: `runghc /path/to/eidolon/Migrations/0.0.4-0.0.5/Migration.hs`
* start or restart your eidolon service
##Acknowledgements:
* This software uses the web Framework "Yesod" by Michael Snoyman. See more at: <http://www.yesodweb.com/>
* This software uses parts of the template "Parallelism" by n33co. see more at: <http://html5up.net/>
[eidolon]: http://eidolon.nek0.eu
[stack]: https://github.com/commercialhaskell/stack/releases
[elasticdocu]: https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-configuration.html