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more docs

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# unleash
__Warning: We are in the process of splitting up unleash into multiple packages in this repository, if you want to test the previous package see [previous tag](https://github.com/unleash/unleash/tree/v1.0.0-alpha.2) __
__Warning: We will soon release the first official version of Unleash (1.0.0). If you want to test the previous package see [previous tag](https://github.com/unleash/unleash/tree/v1.0.0-alpha.2) __
[![Build Status](https://travis-ci.org/Unleash/unleash.svg?branch=master)](https://travis-ci.org/Unleash/unleash)
[![Coverage Status](https://coveralls.io/repos/github/Unleash/unleash/badge.svg?branch=master)](https://coveralls.io/github/Unleash/unleash?branch=master)
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Known client implementations:
- [unleash-client-java](https://github.com/unleash/unleash-client-java)
- [unleash-client-node](https://github.com/unleash/unleash-client-node)
- (you implementaiton here!)
## Project details
- [Project Roadmap](https://github.com/unleash/unleash/wiki/Roadmap)
## Developer Guide
If you want to contribute to this project you are encuraged to send issue request, or provie pull-requests.
Please read the [unleas developer guide](./docs/developer-guide.md) to learn more on how you can contribute.
## Run with docker
We have set up docker-compose to start postgres and the unleash server together. This makes it really fast to start up
unleash locally without setting up a database or node.
You find the docker files inside the `packages/unleash-docker` folder
```bash
$ docker-compose build
$ docker-compose up
```
## Development
### Create a local unleash databases in postgres
```bash
$ psql postgres <<SQL
CREATE USER unleash_user WITH PASSWORD 'passord';
CREATE DATABASE unleash;
GRANT ALL PRIVILEGES ON DATABASE unleash to unleash_user;
CREATE DATABASE unleash_test;
GRANT ALL PRIVILEGES ON DATABASE unleash_test to unleash_user;
SQL
```
Then set env vars:
```
export DATABASE_URL=postgres://unleash_user:passord@localhost:5432/unleash
export TEST_DATABASE_URL=postgres://unleash_user:passord@localhost:5432/unleash_test
```
### Commands
```
// Install dependencies
npm install
// Build unleash-frontend
// (yes this is a bit wierd and be easier when we have a release of the frontend artifact).
// You can of course "npm link unleash-frontend" instead
cd node_modules/unleash-frontend && npm install
// Start server in development
npm start:dev
// Admin dashboard
http://localhost:4242
// Feature API:
http://localhost:4242/api/features
// Execute tests in all packages:
npm test
```
### Making a schema change
1. Create `migrations/sql/NNN-your-migration-name.up.sql` with your change in SQL.
2. Create `migrations/sql/NNN-your-migration-name.down.sql` with the rollback of your change in SQL.
3. Run `db-migrate create your-migration-name` and edit the generated file to have this line: `module.exports = require('../scripts/migration-runner').create('NNN-your-migration-name');`
4. Run `db-migrate up`.
5. Generate LB artifact using `scripts/generate-liquibase-artifact` (TODO: make this internal)
### Publishing / Releasing new packages
Please run `npm run nsp` nad `npm run lint` checks before publishing.
Run `npm run publish` to start the publishing process.
Lerna is setup with independent versioning so you will be prompted with version per package, and lerna will update all the versions across packages.
`npm run publish:dry`
We have made a sperate project which runs unleash inside docker. Please see [unelash-docker](https://github.com/Unleash/unleash-docker)

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# Developer Guide
## Postgre
To run and develop unleash you need to have PostgreSQL databse (PostgreSQL v.9.5.x or newer) locally.
### Create a local unleash databases in postgres
```bash
$ psql postgres <<SQL
CREATE USER unleash_user WITH PASSWORD 'passord';
CREATE DATABASE unleash;
GRANT ALL PRIVILEGES ON DATABASE unleash to unleash_user;
CREATE DATABASE unleash_test;
GRANT ALL PRIVILEGES ON DATABASE unleash_test to unleash_user;
SQL
```
Then set env vars:
(Optional as unleash will asume these as default values).
```
export DATABASE_URL=postgres://unleash_user:passord@localhost:5432/unleash
export TEST_DATABASE_URL=postgres://unleash_user:passord@localhost:5432/unleash_test
```
## PostgreSQL with docker
If you dont want to install PostgreSQL locally you can spin up an instance with docker.
We have created a script to ease this process: `scripts/docker-postgres.sh`
## Commands
```
// Install dependencies
npm install
// Build unleash-frontend
// (yes this is a bit wierd and be easier when we have a release of the frontend artifact).
// You can of course "npm link unleash-frontend" instead
cd node_modules/unleash-frontend && npm install
// Start server in development
npm start:dev
// Admin dashboard
http://localhost:4242
// Feature API:
http://localhost:4242/api/features
// Execute tests in all packages:
npm test
```
## Database changes
We use database migrations to track database changes.
### Making a schema change
1. Create `migrations/sql/NNN-your-migration-name.up.sql` with your change in SQL.
2. Create `migrations/sql/NNN-your-migration-name.down.sql` with the rollback of your change in SQL.
3. Run `db-migrate create your-migration-name` and edit the generated file to have this line: `module.exports = require('../scripts/migration-runner').create('NNN-your-migration-name');`
4. Run `db-migrate up`.
## Publishing / Releasing new packages
Please run `npm run nsp` nad `npm run lint` checks before publishing.
Run `npm run publish` to start the publishing process.
Lerna is setup with independent versioning so you will be prompted with version per package, and lerna will update all the versions across packages.
`npm run publish:dry`