This is an exemplar project to show the use of GraphQL in a web service written in Clojure.
This project uses the Walmart Lacinia library and Datomic as the data store. It uses the mbrainz sample data used in many of the datomic examples.
TODO
WIP
You need to copy the dev-resources/.credentials file to .credentials in
the top level directory of this project (same dir as this README
file). Register at datomic.com for a license for Datomic Pro Starter
Edition. Edit the .credentials to add the user and datomic download
key (see
https://my.datomic.com/account) in
the format user:download-key.
Copy the config/sample-dev-transactor.properties file to
config/dev-transactor.properties. Edit the
config/dev-transactor.properties file to add the license key for
your registered datomic pro license (see
https://my.datomic.com/account) in
the license-key= value.
Download the subset of the mbrainz database covering the period 1968 to 1973 by running this command while in an appropriate parent directory where you want the backed up data to reside (I use my home directory).
wget \
https://s3.amazonaws.com/mbrainz/datomic-mbrainz-1968-1973-backup-2017-07-20.tar \
-O mbrainz.tar
tar -xvf mbrainz.tar
Next, build the docker image:
$ docker build -t graphql-datomic .
Create container called graphql-datomic from image graphql-datomic
(remember to substitute the path to your mbrainz backup data you
downloaded for the path in the volume i.e -v path below).
$ docker create --name graphql-datomic -p 4334:4334 -p 4335:4335 \
-p 4336:4336 -v /path/to/mbrainz-1968-1973:/tmp/data \
graphql-datomic
Start the container with a transactor running but no databases.
$ docker start graphql-datomic
You can test the datomic instance by running the get-database-names
fn in a repl (see env/dev/user.clj for example).
Next we need to get into the running docker container and restore the mbrainz database to the running instance of datomic in the container:
$ docker exec -it graphql-datomic bash
...
bash-4.3# pwd
/opt/datomic-pro-0.9.5561
bash-4.3# ./bin/datomic -Xmx4g -Xms4g restore-db file:///tmp/data/ \
datomic:dev://localhost:4334/mbrainz-1968-1973
Copied 0 segments, skipped 0 segments.
Copied 577 segments, skipped 0 segments.
Copied 1414 segments, skipped 0 segments.
:succeeded
{:event :restore, :db mbrainz-1968-1973, :basis-t 148253, :inst #inst "2017-07-20T16:07:40.880-00:00"}
This should restore mbrainz data backup to running datomic docker
container named graphql-datomic
Copyright © 2018 Chris Howe-Jones
Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.