Madek GraphQL API

⚠️ STATUS: EXPERIMENTAL, WORK IN PROGRESS ⚠️

#goals

• GraphQL API for Sets, Entries, Metadata, Previews (e.g. enough data for a Lightbox gallery)
• read-only data (only query, no mutation)
• only public data (no auth, no access control except the get_* fields)
• no hard dependencies on other parts of Madek except read-only access
  • (local development environment shares some code like DB migrations)
• fully tested with RSpec (maybe turnip?)
  • test data in db + query + variables => expect result
  • schema, incl. backwards compat tracking
  • perf testing? (relative query runtime?)
• performance: should be fast enough to render gallery of 100 photos in set server-side and retain reasonable loading time
  • efficient batching / pagination
  • (SQL) query optimization
• basic "evil" query protection (maximum depth, timeouts)

reading material:

• https://graphql.org/learn/
• https://madek.readthedocs.io/en/latest/architecture/entities/#public-resources
• https://graphql-ruby.org
• https://www.youtube.com/watch?v=Wlu_PWCjc6Y (advanced)
• https://github.com/chentsulin/awesome-graphql (more resources)

development setup

install

git clone https://github.com/Madek/madek-graphql-api && cd madek-graphql-api
git submodule update --recursive --init --force
./scripts/bundle

initial config

cd datalayer
cp config/database_developer_example.yml config/database.yml
# edit config/database.yml
cd -

reset db && startup

./scripts/dev-reset
PORT=4321 ./scripts/start-dev-server

helpers

• https://github.com/prisma/graphql-playground

example queries

query {
  mediaEntry(id: "06622f9c-8f41-43eb-a4a4-fd3b8444de64") {
    id
    createdAt
    title
  }
}

=>

{
  "data": {
    "mediaEntry": {
      "id": "06622f9c-8f41-43eb-a4a4-fd3b8444de64",
      "createdAt": "2012-10-16 13:57:54 UTC",
      "title": "Diplom"
    }
  }
}