Limit to mutations only

[aavelyn]

Is is possible to queue only muatations and not queries?

[pl12133]

I think you can write a wrapper that only calls the queue link for mutations:

import { ApolloLink } from 'apollo-link';

function isMutationOperation(operation) {
    return operation.query.definitions.filter((e) => e.operation === 'mutation').length > 0;
}

const queueLink = new QueueLink();

const onlyQueueMutationsLink = new ApolloLink((operation, forward) =>
  isMutationOperation(operation) ? queueLink.request(operation, forward) : forward(operation)
);

[wtrocki]

I'm happy to write this along with #3.

Idea will be to be able to pass filter and storage interface to queue.

const queueLink = new QueueLink({store,filter});

[wtrocki]

Done in: #14

[helfer]

Thanks for the effort @wtrocki. I like to keep things as simple as possible and separate concerns, so I would recommend using @pl12133 's approach here. The philosophy of apollo link is like the Unix philosophy where each utility is small and limited in scope but input and output can be piped. More complex things can then be done by combining simple links together.