Generating schema.json

[Shankar Raman]

I am not sure how to generate the "schema.json" that's used by Relay, I have seen the following syntax

 graphql(schema, introspectionQuery)

however how do I access the schema that's generated on the server side? I can see how to do it on the client side. 

Any help would be appreciated. 

Thanks.

[andimarek]

Hi,

you need a running a server and then execute a introspection query against it.

The result is the schema.json.

You could do that for example with a curl command: 

curl -vvv -X POST -H 'Accept: application/json' -H 'Content-type: application/json' -d @introspection-query.txt -o data/schema.json <URL-OF-YOUR-ENDPOINT>

The query must be in the introspection-query.txt file and the output will be written into data/schema.json.

[Raphael Hsieh]

Is there any way to run the introspection query without running the server? 
I'm trying to generate the schema.json in my systems build step.

Thanks

[trb...@gmail.com]

Hi Raphael,

I was attempting to build the schema.json at build time as well, I was able to accomplish this very easily:

     public static void main(String[] args) throws IOException, URISyntaxException {

        GraphQLServlet servlet = new GraphQLServlet();

        querys.stream()

                .forEach(query -> servlet.bindQueryProvider(query));

        mutations.stream()

                .forEach(mute -> servlet.bindMutationProvider(mute));

        String schemaResult = servlet.executeQuery(INTROSPECTION_QUERY);

        Files.write(Paths.get(System.getProperty("target.path"), "schema.json"),

                schemaResult.getBytes());

    }

Hope this helps!