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A D-CENT project: A simple service for storing, retrieving and signing activities (Activity Stream 2.0)

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Coracle

Coracle is a lightweight Clojure application for storing Activity Stream 2.0 activities into mongo, and subsequently retrieving them.


Docker Deployment

The latest Coracle image can be retrieved with:

docker pull dcent/coracle

A container can be started like this:

docker run -d --name coracle --env-file=<path to env file>/coracle.env --link coracle-mongo:mongo -p 7000:7000 dcent/coracle

Note this assumes that you have a mongo container running with the name 'coracle-mongo'.

Heroku Deployment

Heroku account setup:

  • Create a heroku account
  • Create new heroku app
  • Install heroku tool-belt

mLab database setup

  • Create mLab account
  • Create database
  • Get MongoDB host, port and DB from the URI: mongodb://[host]:[port]/[db]

Local heroku configuration:

  • Clone the repository: git clone https://github.com/d-cent/coracle.git

  • Log in to your Heroku account: heroku login

  • Add heroku remote: heroku git:remote -a [APP_NAME]

  • Set buildpack: heroku buildpacks:add heroku/clojure

  • Set Config Vars on Heroku

    • SECURE = true
    • BEARER_TOKEN = [anything]
    • EXTERNAL_JWK_SET_URL = [[APP_NAME].herokuapp.com/jwk-set]
    • MONGODB_HOST = [MongoDB host from mLab]
    • MONGODB_PORT = [MongoDB port from mLab]
    • MONGODB_DB = [MongoDB DB from mLab]
  • Push to Heroku


Configuration

The following environment variables can be passed into the docker container to configure the application.

Required:
  • BEARER_TOKEN - The app will not start without it. Only POST requests that have a matching token in the HTTP header (e.g. "bearer-token" "123") are permitted.
  • EXTERNAL_JWK_SET_URL - The app will not start without it. the location of the endpoint in the app to get the keyset. Will be the address of the coracle instance with /jwk-set
Optional:
  • HOST - defaults to 0.0.0.0
  • PORT - defaults to 7000
  • MONGODB_PORT - defaults to 27017
  • MONGODB_DB - defaults to coracle
  • SECURE - defaults to false - When set to true this will wrap the app with middleware that enforces https-only connections.

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A D-CENT project: A simple service for storing, retrieving and signing activities (Activity Stream 2.0)

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