An example GraphQL server written with akka-http, circe and sangria.
After starting the server with
sbt run
# or, if you want to watch the source code changes
sbt ~reStartyou can run queries interactively using graphql-playground by opening http://localhost:8080 in a browser or query the /graphql endpoint directly. The HTTP endpoint follows GraphQL best practices for handling the HTTP requests.
Here are some examples of the queries you can make:
$ curl -X POST localhost:8080/graphql \
-H "Content-Type:application/json" \
-d '{"query": "{hero {name, friends {name}}}"}'this gives back the hero of StarWars Saga together with the list of his friends, which is of course R2-D2:
{
"data": {
"hero": {
"name": "R2-D2",
"friends": [
{
"name": "Luke Skywalker"
},
{
"name": "Han Solo"
},
{
"name": "Leia Organa"
}
]
}
}
}Here is another example, which uses variables:
$ curl -X POST localhost:8080/graphql \
-H "Content-Type:application/json" \
-d '{"query": "query Test($humanId: String!){human(id: $humanId) {name, homePlanet, friends {name}}}", "variables": {"humanId": "1000"}}'The result should be something like this:
{
"data": {
"human": {
"name": "Luke Skywalker",
"homePlanet": "Tatooine",
"friends": [
{
"name": "Han Solo"
},
{
"name": "Leia Organa"
},
{
"name": "C-3PO"
},
{
"name": "R2-D2"
}
]
}
}
}
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