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42 changes: 42 additions & 0 deletions
42
packages/todo-example/client-apollo/src/apollo-link/create-ws-apollo-link.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| // for Apollo Client v3 older than v3.5.10: | ||
| import { | ||
| ApolloLink, | ||
| Operation, | ||
| FetchResult, | ||
| Observable, | ||
| } from "@apollo/client/core"; | ||
| import { print } from "graphql"; | ||
| import { createClient, Client } from "graphql-ws"; | ||
| import { makeAsyncIterableIteratorFromSink } from "@n1ru4l/push-pull-async-iterable-iterator"; | ||
| import { applySourceToSink } from "./shared"; | ||
|
|
||
| class GraphQLWsLink extends ApolloLink { | ||
| private client: Client; | ||
| constructor(url: string) { | ||
| super(); | ||
| this.client = createClient({ | ||
| url, | ||
| }); | ||
| } | ||
|
|
||
| public request(operation: Operation): Observable<FetchResult> { | ||
| return new Observable((sink) => { | ||
| const source = makeAsyncIterableIteratorFromSink((sink) => { | ||
| return this.client.subscribe<FetchResult>( | ||
| { ...operation, query: print(operation.query) }, | ||
| { | ||
| next: sink.next.bind(sink), | ||
| complete: sink.complete.bind(sink), | ||
| error: sink.error.bind(sink), | ||
| } | ||
| ); | ||
| }); | ||
|
|
||
| return applySourceToSink(source, sink); | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| export function createWSApolloLink(url: string) { | ||
| return new GraphQLWsLink(url); | ||
| } |
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56 changes: 56 additions & 0 deletions
56
packages/todo-example/client-relay/src/fetcher/create-ws-fetcher.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| import { | ||
| GraphQLResponse, | ||
| Observable, | ||
| RequestParameters, | ||
| Variables, | ||
| } from "relay-runtime"; | ||
| import { createClient } from "graphql-ws"; | ||
| import { Repeater } from "@repeaterjs/repeater"; | ||
| import { applySourceToSink } from "./shared"; | ||
| import { makeAsyncIterableIteratorFromSink } from "@n1ru4l/push-pull-async-iterable-iterator"; | ||
|
|
||
| function makeEventStreamSource(url: string) { | ||
| return new Repeater<GraphQLResponse>(async (push, end) => { | ||
| const eventsource = new EventSource(url); | ||
| eventsource.onmessage = function (event) { | ||
| const data = JSON.parse(event.data); | ||
| push(data); | ||
| if (eventsource.readyState === 2) { | ||
| end(); | ||
| } | ||
| }; | ||
| eventsource.onerror = function (event) { | ||
| console.log("Error", event); | ||
| end(new Error("Check the console bruv.")); | ||
| }; | ||
| await end; | ||
|
|
||
| eventsource.close(); | ||
| }); | ||
| } | ||
|
|
||
| export function createWSFetcher(url: string) { | ||
| const client = createClient({ url }); | ||
| return ( | ||
| request: RequestParameters, | ||
| variables: Variables | ||
| ): Observable<GraphQLResponse> => { | ||
| if (!request.text) throw new Error("Missing document."); | ||
| const { text: operation, name } = request; | ||
|
|
||
| return Observable.create<GraphQLResponse>((sink) => { | ||
| const source = makeAsyncIterableIteratorFromSink((sink) => { | ||
| return client.subscribe<GraphQLResponse>( | ||
| { variables, query: operation }, | ||
| { | ||
| next: sink.next.bind(sink), | ||
| complete: sink.complete.bind(sink), | ||
| error: sink.error.bind(sink), | ||
| } | ||
| ); | ||
| }); | ||
|
|
||
| return applySourceToSink(source, sink); | ||
| }); | ||
| }; | ||
| } |
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46 changes: 46 additions & 0 deletions
46
packages/todo-example/client-urql/src/urql-client/ws-client.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| import { | ||
| Client, | ||
| subscriptionExchange, | ||
| fetchExchange, | ||
| cacheExchange, | ||
| dedupExchange, | ||
| ExecutionResult, | ||
| } from "urql"; | ||
| import { createClient } from "graphql-ws"; | ||
| import { applySourceToSink } from "./shared"; | ||
| import { makeAsyncIterableIteratorFromSink } from "@n1ru4l/push-pull-async-iterable-iterator"; | ||
|
|
||
| export const createUrqlClient = (url: string) => { | ||
| const client = createClient({ url }); | ||
| return new Client({ | ||
| url: "noop", | ||
| exchanges: [ | ||
| cacheExchange, | ||
| dedupExchange, | ||
| subscriptionExchange({ | ||
| forwardSubscription(operation) { | ||
| return { | ||
| subscribe: (sink) => { | ||
| const source = makeAsyncIterableIteratorFromSink((sink) => { | ||
| return client.subscribe<ExecutionResult>( | ||
| { ...operation, query: operation.query }, | ||
| { | ||
| next: sink.next.bind(sink), | ||
| complete: sink.complete.bind(sink), | ||
| error: sink.error.bind(sink), | ||
| } | ||
| ); | ||
| }); | ||
|
|
||
| return { | ||
| unsubscribe: applySourceToSink(source, sink), | ||
| }; | ||
| }, | ||
| }; | ||
| }, | ||
| enableAllOperations: true, | ||
| }), | ||
| fetchExchange, | ||
| ], | ||
| }); | ||
| }; |
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