阿波罗2号。x: 订阅解析程序未启动?

上有许多帖子,因此可以在上搜索 Apollo Subscription Resolver Never Activates? ,包括我的 June 2017 .从那以后,我的订阅工作一直很好,好几个月了。但那是阿波罗1号。x、 现在是阿波罗2号。x、 我也有类似的异常。

旧的SO帖子似乎无法解决这种异常现象。在过去的几天里,我一直在浏览这些文档和文章,试图确保我做到了文档和文章所说的一切,但还没有完全奏效。

为了完整性,我提供了所有相关代码。

服务器安装程序

import { createApolloServer } from "meteor/apollo";
import { makeExecutableSchema } from "graphql-tools";
import merge from "lodash/merge";
import cors from 'cors';

import GoalsSchema from "../../api/goals/Goal.graphql";
import GoalsResolvers from "../../api/goals/resolvers";
import ResolutionsSchema from "../../api/resolutions/Resolutions.graphql";
import ResolutionsResolvers from "../../api/resolutions/resolvers";
import UsersSchema from "../../api/users/User.graphql";
import UsersResolvers from "../../api/users/resolvers";
import { createServer } from 'http';
import { SubscriptionServer } from 'subscriptions-transport-ws';
import { execute, subscribe } from 'graphql';

const typeDefs = [GoalsSchema, ResolutionsSchema, UsersSchema];

//must change this line to get changes in .graphql files recognized. afdkk

const resolvers = merge(GoalsResolvers, ResolutionsResolvers, UsersResolvers);

const schema = makeExecutableSchema({
    typeDefs,
    resolvers
});

createApolloServer({ schema });

const WS_PORT = 3200;

// Create WebSocket listener server
// https://www.apollographql.com/docs/graphql-subscriptions/express.html
const websocketServer = createServer((request, response) => {
    response.writeHead(404);
    response.end();
});

// Bind it to port and start listening
websocketServer.listen(WS_PORT, () => console.log(
    `Websocket Server is now running on ws://localhost:${WS_PORT}`
));

const subscriptionServer = SubscriptionServer.create(
    {
        schema,
        execute,
        subscribe,
    },
    {
        server: websocketServer,
        path: '/subscriptions',
    },
);

客户端设置

import React from "react";
import {Meteor} from "meteor/meteor";
import {render} from "react-dom";
import {ApolloProvider} from "react-apollo";
import {ApolloLink, from} from "apollo-link";
import {ApolloClient} from "apollo-client";
import {HttpLink} from "apollo-link-http";
import {InMemoryCache} from "apollo-cache-inmemory";
import {onError} from 'apollo-link-error';
import {split} from 'apollo-link';
import {WebSocketLink} from 'apollo-link-ws';
import {getMainDefinition} from 'apollo-utilities';
import {toIdValue} from 'apollo-utilities';

import App from "../../ui/App";

// Create an http link:
const httpLink = new HttpLink({
    uri: Meteor.absoluteUrl("graphql"),
    credentials: 'same-origin'
})

// Create a WebSocket link:
const wsLink = new WebSocketLink({
    uri: `ws://localhost:3200/subscriptions`,
    options: {
        reconnect: true
    }
});

// using the ability to split links, you can send data to each link
// depending on what kind of operation is being sent
const splitLink = split(
    // split based on operation type
    ({query}) => {
        const {kind, operation} = getMainDefinition(query);
        return kind === 'OperationDefinition' && operation === 'subscription';
    },
    wsLink,
    httpLink,
);

const authLink = new ApolloLink((operation, forward) => {
    const token = Accounts._storedLoginToken();
    operation.setContext(() => ({
        headers: {
            "meteor-login-token": token
        }
    }));
    return forward(operation);
});


const client = new ApolloClient({
    link: ApolloLink.from([
        onError(({graphQLErrors, networkError}) => {
            if (graphQLErrors)
                graphQLErrors.map(({message, locations, path}) =>
                    console.log(
                        `[GraphQL error]: Message: ${message}, Location: ${locations}, Path: ${path}`,
                    ),
                );
            if (networkError) console.log(`[Network error]: ${networkError}`);
        }),
        authLink,
        splitLink,
     ]),
    cache: new InMemoryCache({})
});

const ApolloApp = () => (
    <ApolloProvider client={client}>
        <App/>
    </ApolloProvider>
);

Meteor.startup(() => {
    render(<ApolloApp/>, document.getElementById("app"));
});

类型

type Resolution {
  _id: String!
  name: String!
  goals: [Goal]
  completed: Boolean
}

type Query {
  resolutions: [Resolution]
  getResolutionViaId(resolutionId: String!): Resolution
}

type Mutation {
  createResolution(name: String!): Resolution
}

type Subscription {
  resolutionWasAdded(userId: String!): Resolution
}

查询

let CREATE_RESOLUTION = gql`
    mutation createResolution($name: String!) {
      createResolution(name: $name) {
        __typename
        _id
        name
        ...resolutionGoals
        completed
      }
    }
    ${resolutionQueryFragments.resolutionGoals}
`;


const RESOLUTION_SUBSCRIBE = gql`
          subscription resolutionWasAdded($userId: String!){
              resolutionWasAdded(userId: $userId){
                __typename
                _id
                name
                ...resolutionGoals
                completed
              }
            } 
            ${resolutionQueryFragments.resolutionGoals}
    `;

分解器

    Mutation: {
        createResolution(obj, args, {userId}) {
            let name = args.name;
            if (userId) {
                return Promise.resolve()
                    .then(() => {
                        const resolutionId = Resolutions.insert({
                            name,
                            userId
                        });
                        return resolutionId;
                    })
                    .then(resolutionId => {
                        const resAdded = Resolutions.findOne(resolutionId);
                        return resAdded;
                    })
                    .then(resolutionWasAdded => {
                        pubsub.publish('resolutionWasAdded', {resolutionWasAdded: args})

                        return resolutionWasAdded;
                    })
                    .catch((err) => {
                        console.log(err);
                    });
            }
            throw new Error("Unauthorized");
        }
    },

    Subscription: {
        resolutionWasAdded: {
            subscribe: withFilter(
                () => pubsub.asyncIterator("resolutionWasAdded"),
                (payload, variables) => {
                    debugger;
                    return true;
                })
        }
    }
}

生产线 pubsub.publish... 在中,变异解析程序运行,但订阅解析程序从未激活。

我错过了什么?

使现代化

我必须修改如何在客户端查询组件中设置订阅。当我发现更多信息后,我会更新这篇文章。