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import { | ||
RSocketClient, | ||
BufferEncoders, | ||
encodeCompositeMetadata, | ||
TEXT_PLAIN, | ||
MESSAGE_RSOCKET_COMPOSITE_METADATA, | ||
MESSAGE_RSOCKET_ROUTING, | ||
MESSAGE_RSOCKET_AUTHENTICATION, | ||
encodeRoute, | ||
encodeSimpleAuthMetadata, | ||
} from 'rsocket-core'; | ||
import type { ReactiveSocket, Payload, ISubscriber, ISubscription, DuplexConnection, Frame, ConnectionStatus } from 'rsocket-types'; | ||
import { Flowable, Signle } from 'rsocket-flowable'; | ||
import RSocketWebSocketClient from 'rsocket-websocket-client'; | ||
import WebSocket from 'ws'; | ||
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class ResubscribeOperator<T> implements ISubscriber<T>, ISubscription { | ||
source: Flowable<T>; | ||
actual: ISubscriber<T>; | ||
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done: boolean; | ||
once: boolean; | ||
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upstream: ISubscription; | ||
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requested: number; | ||
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constructor(source: Flowable<T>, actual: ISubscriber<T>) { | ||
this.source = source; | ||
this.actual = actual; | ||
this.requested = 0; | ||
} | ||
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onSubscribe(subscription: ISubscription) { | ||
if (this.done) { | ||
subscription.cancel(); | ||
return; | ||
} | ||
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this.upstream = subscription; | ||
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if (!this.once) { | ||
this.once = true; | ||
this.actual.onSubscribe(this); | ||
return; | ||
} | ||
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subscription.request(this.requested); | ||
} | ||
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onComplete() { | ||
if (this.done) { | ||
return; | ||
} | ||
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this.done = true; | ||
this.actual.onComplete(); | ||
} | ||
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onError(error: Error) { | ||
if (this.done) { | ||
return; | ||
} | ||
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this.upstream = null; | ||
setTimeout(() => this.source.subscribe(this)); | ||
} | ||
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onNext(value: T) { | ||
if (this.done) { | ||
return; | ||
} | ||
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this.requested--; | ||
this.actual.onNext(value); | ||
} | ||
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cancel() { | ||
if (this.done) { | ||
return; | ||
} | ||
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this.done = true; | ||
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if (this.upstream) { | ||
this.upstream = null; | ||
this.upstream.cancel(); | ||
} | ||
} | ||
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request(n: number) { | ||
this.requested += n; | ||
if (this.upstream) { | ||
this.upstream.request(n); | ||
} | ||
} | ||
} | ||
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class ReconnectableRSocket<D, M> implements ReactiveSocket<D, M> { | ||
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socket: ReactiveSocket<D, M>; | ||
clientFactory: () => RSocketClient<D, M>; | ||
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constructor(clientFactory: () => RSocketClient<D, M>) { | ||
this.clientFactory = clientFactory; | ||
this.connect(); | ||
} | ||
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connect() { | ||
this.clientFactory().connect().then( | ||
socket => { | ||
this.socket = socket; | ||
socket.connectionStatus().subscribe(event => { | ||
if (event.kind !== 'CONNECTED') { | ||
this.socket = null; | ||
this.connect(); | ||
} | ||
}); | ||
}, | ||
error => this.connect() | ||
); | ||
} | ||
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fireAndForget(payload: Payload<D, M>): void { | ||
if (!this.socket) { | ||
throw new Error('Not Connected yet. Retry later'); | ||
} | ||
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this.socket.fireAndForget(payload); | ||
} | ||
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requestResponse(payload: Payload<D, M>): Single<Payload<D, M>> { | ||
if (!this.socket) { | ||
return Single.error(new Error('Not Connected yet. Retry later')); | ||
} | ||
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return this.socket.requestResponse(payload); | ||
} | ||
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requestStream(payload: Payload<D, M>): Flowable<Payload<D, M>> { | ||
if (!this.socket) { | ||
return Flowable.error(new Error('Not Connected yet. Retry later')); | ||
} | ||
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return this.socket.requestStream(payload); | ||
} | ||
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requestChannel(payloads: Flowable<Payload<D, M>>): Flowable<Payload<D, M>> { | ||
if (!this.socket) { | ||
return Flowable.error(new Error('Not Connected yet. Retry later')); | ||
} | ||
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return this.socket.requestChannel(payloads); | ||
} | ||
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metadataPush(payload: Payload<D, M>): Single<void> { | ||
if (!this.socket) { | ||
return Single.error(new Error('Not Connected yet. Retry later')); | ||
} | ||
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return this.socket.metadataPush(payload); | ||
} | ||
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} | ||
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const maxRSocketRequestN = 2147483647; | ||
const keepAlive = 60000; | ||
const lifetime = 180000; | ||
const dataMimeType = 'application/octet-stream'; | ||
const metadataMimeType = MESSAGE_RSOCKET_COMPOSITE_METADATA.string; | ||
const route = 'rsocket.request.stream'; | ||
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const clientFactory: () => RSocketClient<Buffer, Buffer> = () => new RSocketClient({ | ||
setup: { | ||
dataMimeType, | ||
keepAlive, | ||
lifetime, | ||
metadataMimeType, | ||
payload: { | ||
data: undefined, | ||
metadata: encodeCompositeMetadata([ | ||
[TEXT_PLAIN, Buffer.from('Hello World')], | ||
[MESSAGE_RSOCKET_ROUTING, encodeRoute(route)], | ||
[ | ||
MESSAGE_RSOCKET_AUTHENTICATION, | ||
encodeSimpleAuthMetadata('user', 'pass'), | ||
], | ||
['custom/test/metadata', Buffer.from([1, 2, 3])], | ||
]), | ||
}, | ||
}, | ||
transport: new RSocketWebSocketClient( | ||
{ | ||
debug: true, | ||
url: 'ws://localhost:8080/rsocket', | ||
wsCreator: url => new WebSocket(url), | ||
}, | ||
BufferEncoders, | ||
), | ||
}); | ||
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const socket = new ReconnectableRSocket(clientFactory); | ||
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const request = new Flowable(subscriber => { | ||
socket | ||
.requestStream({ | ||
data: Buffer.from('request-stream'), | ||
metadata: encodeCompositeMetadata([ | ||
[TEXT_PLAIN, Buffer.from('Hello World')], | ||
[MESSAGE_RSOCKET_ROUTING, encodeRoute(route)], | ||
[ | ||
MESSAGE_RSOCKET_AUTHENTICATION, | ||
encodeSimpleAuthMetadata('user', 'pass'), | ||
], | ||
['custom/test/metadata', Buffer.from([1, 2, 3])], | ||
]), | ||
}) | ||
.subscribe(subscriber); | ||
}); | ||
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request | ||
.map() | ||
.lift(actual => new ResubscribeOperator(request, actual)) | ||
.subscribe({ | ||
// eslint-disable-next-line no-console | ||
onComplete: () => console.log('Request-stream completed'), | ||
onError: error => | ||
console.error(`Request-stream error:${error.message}`), | ||
// eslint-disable-next-line no-console | ||
onNext: value => console.log('%s %s', value.data, value.metadata), | ||
onSubscribe: sub => sub.request(maxRSocketRequestN), | ||
}); | ||
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setTimeout(() => { }, 30000000); |