Support send HttpGetMethod for Persisted Queries

[Codebear98]

• Support APQs with CDN through useHttpGetMethodForPersistedQueries

Ref. Integrate APQs with CDN

Implemented useHttpGetMethodForPersistedQueries which sends with HttpGetMethod when it's a persisted query request, otherwise send HttpGetMethod or HttpPostMethod depends on global setting of useHttpGetMethodForQueries.

Example

ApolloClient.builder()
.enableAutoPersistedQueries(true)
.useHttpGetMethodForPersistedQueries(true)
.build()

ref. #1317 #1055

[sav007]

I guess this flag can be local in interceptAsync ?

[Codebear98]

removed

[sav007]

nit: think can be replaced with:

.useHttpGetMethodForQueries(request.useHttpGetMethodForQueries || useHttpGetMethodForPersistedQueries)

[Codebear98]

replaced, thanks!

[sav007]

I believe we don't need this as request is our original request (not modified). So it will have already set this flag.

See line with:

chain.proceedAsync(newRequest, dispatcher, new CallBack() {
      @Override public void onResponse(@NotNull InterceptorResponse response) {
        if (disposed) return;
        Optional<InterceptorRequest> retryRequest = handleProtocolNegotiation(request, response);

request is original request not modified.

[Codebear98]

yes you r right, as original request is preserved, can reuse that one. Fixed as suggestion above.

Beware that we still need to send the http body with extension.persistedQuery for creating PQ cache in server for later request. So we need .sendQueryDocument(true) and .autoPersistQueries(true) and guarantee original request has those value on.

And its value now depends in RealApolloCall.java line. 139

    ApolloInterceptor.InterceptorRequest request = ApolloInterceptor.InterceptorRequest.builder(operation)
        .cacheHeaders(cacheHeaders)
        .requestHeaders(requestHeaders)
        .fetchFromCache(false)
        .optimisticUpdates(optimisticUpdates)
        .useHttpGetMethodForQueries(useHttpGetMethodForQueries)
        .autoPersistQueries(enableAutoPersistedQueries)
        .build();
    interceptorChain.proceedAsync(request, dispatcher, interceptorCallbackProxy());
  }

[sav007]

LGTM!