Micronaut - MicroStream integration
Feature description
This project is an intent to present an experiment of Micronaut to MicroStream integration.
The feature exposes the MicroStream graph data as a GraphQL schema.
All that the user has to do is to create it MicroStream graph model and annotation the root entity with
the @Root annotation.
All the heavy lifting is automagically done through Micronaut annotation processing (part of it is at compile time) and the user data is accessible through the exposed /graphql endpoint.
A lot of work remains to do within this project, part of it:
- Handle GraphQL mutations
- Full MicroStream configuration through property sources
- ...
Chat (Sample application)
The Gradle subproject chat-application holds a sample main application showcasing the feature capabilities (due to
time shortage I could not do more than the sample showcase).
Navigate to the module directory and run below command (after having built the micronaut-microstream-graph module:
$ ./gradlew run
Open a web browser and navigate to http://localhost:8080/graphiql and play with some queries.
Here down a sample GraphQL query:
query {
threads {
name,
members {
username
},
messages {
author {
username
},
content,
createdAt
}
}
users {
username,
email
}
}
and here down the results:
{
"data": {
"threads": [
{
"name": "hackathon.microstream.on",
"members": [
{
"username": "tmarouane"
}
],
"messages": [
{
"author": {
"username": "tmarouane"
},
"content": "MicroStream is cool!",
"createdAt": "2021-02-28T23:16:17.674570Z"
},
{
"author": {
"username": "tmarouane"
},
"content": "MicroStream is cool!",
"createdAt": "2021-02-28T23:16:17.674598Z"
}
]
}
],
"users": [
{
"username": "tmarouane",
"email": "marouane.trab@gmail.com"
}
]
}
}