git clone https://github.com/grand-stack/grand-stack-starter.git

version: '3'

services:

  neo4j:

    build: ./neo4j

    ports:

      - 7474:7474

      - 7687:7687

    environment:

      - NEO4J_dbms_security_procedures_unrestricted=apoc.*

      - NEO4J_apoc_import_file_enabled=true

      - NEO4J_apoc_export_file_enabled=true

      - NEO4J_dbms_shell_enabled=true

  api:

    build: ./api

    ports:

      - 4000:4000

    links:

    - neo4j

    depends_on:

    - neo4j

  ui:

    build: ./ui

    ports:

      - 3000:3000

    links:

    - api

    depends_on:

    - api

docker 配置比较简单，主要是插件添加以及一些简单的参数配置

Dockerfile

FROM neo4j:3.4.5

ENV NEO4J_AUTH=neo4j/letmein

ENV APOC_VERSION 3.4.0.2

ENV APOC_URI https://github.com/neo4j-contrib/neo4j-apoc-procedures/releases/download/${APOC_VERSION}/apoc-${APOC_VERSION}-all.jar

RUN wget -P /var/lib/neo4j/plugins ${APOC_URI}

ENV GRAPHQL_VERSION 3.4.0.1

ENV GRAPHQL_URI https://github.com/neo4j-graphql/neo4j-graphql/releases/download/${GRAPHQL_VERSION}/neo4j-graphql-${GRAPHQL_VERSION}.jar

RUN wget -P /var/lib/neo4j/plugins ${GRAPHQL_URI}

EXPOSE 7474 7473 7687

CMD ["neo4j"]

启动配置

  neo4j:

    build: ./neo4j

    ports:

      - 7474:7474

      - 7687:7687

    environment:

      - NEO4J_dbms_security_procedures_unrestricted=apoc.*

      - NEO4J_apoc_import_file_enabled=true

      - NEO4J_apoc_export_file_enabled=true

      - NEO4J_dbms_shell_enabled=true

定义graphql api 的schema 以及使用ne4j 进行graphql 查询的转换

简单schenma，集成了neo4j 指令

type User {

  id: ID!

  name: String

  friends: [User] @relation(name: "FRIENDS", direction: "BOTH")

  reviews: [Review] @relation(name: "WROTE", direction: "OUT")

  avgStars: Float @cypher(statement: "MATCH (this)-[:WROTE]->(r:Review) RETURN toFloat(avg(r.stars))")

  numReviews: Int @cypher(statement: "MATCH (this)-[:WROTE]->(r:Review) RETURN COUNT(r)")

}

查询指令解析配置，很传统，比较简单

import { neo4jgraphql } from "neo4j-graphql-js";

import fs from 'fs';

import path from 'path';

export const typeDefs =

  fs.readFileSync(process.env.GRAPHQL_SCHEMA || path.join(__dirname, "schema.graphql"))

    .toString('utf-8');

export const resolvers = {

  Query: {

    usersBySubstring: neo4jgraphql // resovler for neo4j

  }

};

graphql server 启动

import { typeDefs, resolvers } from "./graphql-schema";

import { ApolloServer, gql, makeExecutableSchema } from "apollo-server";

import { v1 as neo4j } from "neo4j-driver";

import { augmentSchema } from "neo4j-graphql-js";

import dotenv from "dotenv";

dotenv.config();

const schema = makeExecutableSchema({

  typeDefs,

  resolvers

});

// augmentSchema will add autogenerated mutations based on types in schema

const augmentedSchema = augmentSchema(schema);

const driver = neo4j.driver(

  process.env.NEO4J_URI || "bolt://localhost:7687",

  neo4j.auth.basic(

    process.env.NEO4J_USER || "neo4j",

    process.env.NEO4J_PASSWORD || "neo4j"

  )

);

const server = new ApolloServer({

  // using augmentedSchema (executable GraphQLSchemaObject) instead of typeDefs and resolvers

  //typeDefs,

  //resolvers,

  context: { driver },

  // remove schema and uncomment typeDefs and resolvers above to use original (unaugmented) schema

  schema: augmentedSchema

});

server.listen(process.env.GRAPHQL_LISTEN_PORT, '0.0.0.0').then(({ url }) => {

  console.log(`GraphQL API ready at ${url}`);

});

项目使用的react 脚手架生成的，主要是apollo-boost react-apollo的集成使用，同时项目使用了pwa

技术，还是挺好的参考

UI/src/UserList.js 比较重要，包含了数据查询的使用，主要是apollo client 的使用

docker-compose  build

docker-compose up -d

graphql api 地址

http://hostip:4000