Allow passing in operationContext when fetching persisted queries

[smyrick]

tl;dr I want to be able to call my distributed APQ cache with the trace id from the GraphQL HTTP request

A customer is adding a Redis cluster to their pipeline for APQ requests. Today it is not possible to access the operationContext while making a fetch to Redis because the call to .get only passes in the simple key.

apollo-server/packages/server/src/requestPipeline.ts

Line 145 in 1b940cf

query = await internals.persistedQueries.cache.get(queryHash);

This by design due to the simple nature of @apollo/utils.keyvaluecache which only accepts the key for .get calls.

However, inside the context in the requestContext we store a DataDog span that we would like to activate and create a custom DD span to have metrics for the request to the redis cluster.

Since we are not able to continue the span with the same trace id from the request the spans look like this and are detached from the GraphQL request:

---

Instead we would like to be able to read the trace id from the request context which means we need some way of passing extra info to the .get call. Some small tweaks to the existing package like this could work but open for feedback

export interface KeyValueCache<V = string> {
  get(key: string): Promise<V | undefined>;
  // Optional new method so it is not breaking
  get?(key: string, options?: {}): Promise<V | undefined>;
  set(key: string, value: V, options?: KeyValueCacheSetOptions): Promise<void>;
  delete(key: string): Promise<boolean | void>;
}