#MessagePattern({ service: 'data', slot: 'authorizeUser'})
#UseFilters(new ExceptionFilter())
authorizeUser(#Payload() payload: Types.IMessagePayload) {
return this.appService.authorizeUser(payload);
}
before i will call i want to check existence of MessagePattern because when pattern not exist app is hanging
await this.clientProxy
.send({ service: 'data', slot: 'findAndPopulate' }, payload)
.toPromise();
I can have for each pattern his gateway and check from client with #nestjs/terminus his existence but i think it is not good solution like
#Get('/getSpecificUser/health')
#MessagePattern({ service: 'data', slot: 'getSpecificUser ' })
authorizeUser(#Payload() payload: Types.IMessagePayload) {
return this.appService.authorizeUser(payload);
}
// client
_this.health.check([() => _this.dns.pingCheck('group','/getSpecificUser/health')]);
is there any better solutions with nats chanels or smth else
Related
This is happening on a simple project during local development, so cloud infrastructure isn't an issue.
This is also happening in the application playground.
My module registration:
GraphQLModule.forRootAsync<ApolloDriverConfig>({
driver: ApolloDriver,
imports: [YeoConfigModule],
useFactory: (configService: YeoConfigService<AppConfig>) => {
const config: ApolloDriverConfig = {
debug: true,
subscriptions: {
'graphql-ws': true,
},
playground: true,
autoSchemaFile: './apps/event-service/schema.gql',
sortSchema: true,
context: ({ req, res }) => ({ req, res }),
};
const origins = configService.get('CORS_ORIGINS')();
config.cors = { origin: origins, credentials: true };
// config.path = '/apis/event-service/graphql';
return config;
},
inject: [YeoConfigService],
My app startup:
async function bootstrap(): Promise<void> {
const app = await getApp();
await app.listen(process.env.PORT ?? 3600);
}
bootstrap();
My versions:
"graphql-ws": "5.11.2",
"graphql-redis-subscriptions": "2.5.0"
"#apollo/gateway": "2.1.3",
"#nestjs/graphql": "10.1.3",
"graphql": "16.5.0",
Result:
{
"error": "Could not connect to websocket endpoint ws://localhost:3600/graphql. Please check if the endpoint url is correct."
}
Any ideas why this isn't working as expected? I've been reading the nestjs docs up at https://docs.nestjs.com/graphql/subscriptions but there's nothing that I can find about extra setup required other than adding
subscriptions: {
'graphql-ws': true,
},
when registering the graphql module.
For anyone else stumbling upon this, I have started using altair which allows me to specify the ws endpoint as well as the type of connection, among which there is a graphql-ws option.
So I went with it.
If anyone knows how to achieve this using the playground referred in the original answer, happy to mark that one as the right answer over my own.
I'm trying to implement Auth0 in Apollo Federation, I was able to implement it in its individual services (https://auth0.com/blog/developing-a-secure-api-with-nestjs-adding-authorization/#Set-Up-API-Authorization) but if I'm trying to access the APIs thru the gateway, the header/payload is not being passed down to the services, hence its always unauthorized.
if the API is accessed thru individual services, the payload is being received and properly decoded from the header and works fine but if thru the gateway, its not being cascaded to the services that needs it.
Currently using a code-first implementation for it. I've also tried mirroring the module used in the services but it still doesn't work.
sample payload in individual service
{
iss: 'issuer url here',
sub: 'google-oauth2',
aud: ['audience link'],
iat: ,
exp: ,
azp: '',
scope: '',
permissions: [ 'sample:permission' ]
}
imports in the gateway
imports: [
ConfigModule.forRoot(),
GraphQLGatewayModule.forRoot({
server: {
cors: true,
},
gateway: {
serviceHealthCheck: true,
serviceList: [
{
name: 'service',
url: `${process.env.SERVICE_URL}/graphql`,
},
],
},
}),
]
You can customize header that's being used in internal request by using buildService option:
server.ts
const gateway = new ApolloGateway({
buildService: ({ url }) => new RequestHandler({ url }),
serviceList,
})
where RequestHandler class extends RemoteGraphQLDataSource:
import { RemoteGraphQLDataSource } from '#apollo/gateway'
import type { GraphQLRequest } from 'apollo-server-core'
import type express from 'express'
export class RequestHandler extends RemoteGraphQLDataSource {
willSendRequest({ context, request }: { context: { req: express.Request }, request: GraphQLRequest }) {
request.http?.headers.set('somethingFromOriginalRequestOrSomethingCustom', context.req.headers['something'])
}
}
I am planning to use RSocket for my notifications system. I wanted to use Spring Boot RSocket for my backend (Java) while for my frontend, I will be using Angular using rsocket-js.
I was able to quickly spin-up a request-stream interaction model wherein I can pull-in all the notifications within my system. See code snippet for my backend:
#MessageMapping("streams")
public Flux<Notification> requestStream() {
log.info("Streaming to notifications...");
return streamEventService.retrieveAllNotifications().log();
}
Now on my frontend, I have the following code snippet:
export class RsocketClientService {
// backend ws endpoint
private readonly wsURL = 'ws://localhost:7000/notification';
client: any;
socket: any
constructor() {
this.client = new RSocketClient({
serializers: {
data: JsonSerializer,
metadata: IdentitySerializer
},
setup: {
keepAlive: 10000,
lifetime: 180000,
dataMimeType: 'application/json',
metadataMimeType: 'message/x.rsocket.routing.v0',
payload: {
data: 23
}
},
transport: new RSocketWebSocketClient({
url: this.wsURL
}),
responder: new EchoResponder()
});
}
public connect() {
console.log("initializeSocket...")
this.client.connect().subscribe({
onComplete: (socket: any) => {
this.socket = socket;
this.socket.connectionStatus().subscribe( (status: any) => {
console.log("Connection status? ", status);
});
},
onError: (error: any) => {
console.error("Connection onError? " + error);
},
onSubscribe: (cancel: any) => {
console.log("Connection onSubscribe? cancel?");
}
});
}
public retrieveNotifications() {
this.socket.requestStream({
data: null,
metadata: String.fromCharCode('streams'.length) + 'streams'
})
.subscribe({
onComplete: () => {
console.log("onComplete?");
},
onError: (error: any) => {
console.error("onError? error: " + error);
},
onNext: (payload: any) => {
console.log("onNext? payload: ", payload);
},
onSubscribe: (subscription: any) => {
console.log("onSubscribe?");
subscription.request(1000000);
},
});
}
I have a button in the UI that if clicked will call the method retrieveNotifications which will subscribe to the rsocket message mapping method in my backend requestStream.
Everything is working fine and I could see my responses coming in. Now my question would be, what if on my server there is a new data inserted into the database for example, then how can I send a notification message from my backend server to the frontend saying that "Hey! new data was pushed into the database." I am kind of stuck on how the server will be able to use a somehow fire and forget to the client side.
You want to server-side send request to client-side when connect established.
You can get this connect's RSocketRequester from server then using it create one of four method(FNF, Request-reponse, request-stream, stream-stream) to send request to client.
In client-side, you can receive data in EchoResponder class in one of four method above.
It looks like you need to create a new controller function that returns a void and when you insert an object in the DB you pass that object to the front end from this function and in angular you connect to it as you did up...try to check this link for fire and forget approach ... hope this helps https://www.baeldung.com/spring-boot-rsocket
I am using the Node.js ws library, to listen to events in user accounts on a 3rd party API. For each user, I open a websocket to listen to the events in the user's account.
Turns out, the 3rd-party API doesn't provide a userID for each event, so if I have 10 websocket connections to user-accounts, I cannot determine which account an event came from.
I have access to a unique userId prior to starting each of my connections.
Is there a way to append or wrap the websocket connection with the userId identifier, to each connection I make, such that when I receive an event, I can access the custom identifier, and subsequently know which user's account the event came from?
The code below is a mix of real code, and pseudocode (i.e customSocket)
const ws = new WebSocket('wss://thirdparty-api.com/accounts', {
port: 8080,
});
ws.send(
JSON.stringify({
action: 'authenticate',
data: {
oauth_token: access_token,
},
})
);
// wrap and attach data here (pseudocode at top-level)
customSocket.add({userId,
ws.send(
JSON.stringify({
action: 'listen',
data: {
streams: ['action_updates'],
},
})
)
})
// listen for wrapper data here, pseudocode at top level
customSocket.emit((customData) {
ws.on('message', function incoming(data) {
console.log('incoming -> data', data.toString());
})
console.log('emit -> customData', customData);
})
Looking at the socket.io library, the namespace feature may solve for this, but I can't determine if that's true or not. Below is an example in their documentation:
// your application has multiple tenants so you want to dynamically create one namespace per tenant
const workspaces = io.of(/^\/\w+$/);
workspaces.on('connection', socket => {
const workspace = socket.nsp;
workspace.emit('hello');
});
// this middleware will be assigned to each namespace
workspaces.use((socket, next) => {
// ensure the user has access to the workspace
next();
});
I found a solution to this which is fairly simple. First create a message handler function:
const eventHandler = (uid, msg) => {
console.log(`${uid} did ${msg}`);
};
Then, when you create the websocket for the given user, wrap the .on event with the handler:
const createSocketForUser = (uid, eventHandler) => {
const socket = new WebSocket(/* ... */);
socket.onmessage = (msg) => {
eventHandler(uid, msg)
};
return socket;
}
I have an issue where we're using apollo client and specifically the useMutation react hook to perform mutation calls to our GraphQL Server.
At certain times, the server may return a 401 unauthorized response - at which point, we can make a call to special endpoint which re-authenticates the client and refreshes the cookie/token whatever.
I want to be able to re-run the same mutation again once the client is re-authenticated. So basically I would like to know if it is possible to do the following:
useMutation --> Receive 401 Unauthorized --> call to refresh token --> rerun same initial mutation
This is how our useMutation looks like:
const [mutationFunction, { data, ...rest }] = useMutation(query, {
onError(_err: any) {
const networkError = error?.networkError as any;
if (networkError?.statusCode === 401 && !refreshFailed) {
// eslint-disable-next-line prefer-destructuring
loading = true;
error = undefined;
fetch('/authentication/refresh', {
method: 'POST',
headers: { 'Content-Type': 'application/json' }
})
.then(response => response.json())
.then(token => {
localStorage.setItem(jwtLocalStorageKey, token);
// re fetch here
})
.catch(() => {
refreshFailed = true;
});
} else {
showAlert(_err.message, 'error');
}
}
});
and this is how we call it currently:
const {
mutationFunction: updateTournamentUserMutation,
loading: updateTournamentUserLoading,
error: updateTournamentUserError,
data: updateTournamentUserData
} = useMutationHook(gqlUpdateTournamentUser);
updateTournamentUserMutation({ variables: { input } });
Because we're using hooks and the way we're using it above, I'm not entirely sure how we can save or reuse the same data that is initially sent in the first mutation (that is the mutation parameters)
Is it possible to do so using the current way we're doing it?