Feature Request: Support for Automatic persisted queries

[Arthurius]

To improve network performance with GraphQL, it would really be nice to have the option to enable APQ in the iOS ApolloClient. On Android this feature is already implemented like this:

ApolloClient.builder()
     /* ... */
     .enableAutoPersistedQueries(true)
     /* ... */
     .build()

[Codebear98]

Hi, I'm actively working on this.

[Codebear98]

Better merge #572 first, as it will need useGetMethodForPersistedQueries for APQs with Couldflare support.

[SirensOfTitan]

I hacked together really super basic support for APQ today on this branch here (It is pointing to my forked master branch though): https://github.com/SirensOfTitan/apollo-ios/tree/sirensoftitan/jun-28/apq

I didn't build subscription support yet, and haven't added GET support for queries yet. I essentially just created an APQNetworkTransport that wraps another network transport and handles persisted queries. I could probably just not use CryptoSwift and use CommonCrypto instead for sha256 hashes.

My feeling after adding this is that a lot of this stuff is starting to feel a bit busy. It might be getting to the point where an ApolloLink kind-of abstraction for iOS would be really valuable.

[dmandarino]

@SirensOfTitan a branch that supports GET method is already merged. What do you think of updating your branch to continue your work?

It would be great to have persisted queries.

[SirensOfTitan]

I plan on working more on this today, so hopefully I’ll get to something I find PR worthy today! I’ll check back in soon. Sent from ProtonMail Mobile

…

On Sun, Jun 30, 2019 at 3:19 PM, dmandarino ***@***.***> wrote: ***@***.***(https://github.com/SirensOfTitan) a branch that supports GET method is already merged. What do you think of updating your branch to continue your work? It would be great to have persisted queries. — You are receiving this because you were mentioned. Reply to this email directly, [view it on GitHub](#582?email_source=notifications&email_token=AABV6FTAPFYMZXK3GYHQONLP5EBMNA5CNFSM4HXW6U3KYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODY4SASQ#issuecomment-507060298), or [mute the thread](https://github.com/notifications/unsubscribe-auth/AABV6FWIW56MUUYACPSGHM3P5EBMNANCNFSM4HXW6U3A).

[SirensOfTitan]

#601

[Codebear98]

Ops. Actually I was testing it for weeks, anyway I made a PR too #608
It supports fetchOption and also useGetMethodWithPersistedQueries which sync up the changes on Android project for CDN support.

Please see if it's useful for you.

[designatednerd]

This support shipped with 0.17.0! I missed this issue when I was closing everything else out. Please file a new issue if there's anything not working correctly with this.