前端技术之：Prisma Demo服务部署过程记录

安装前提条件：
1、已经安装了docker运行环境
2、以下命令执行记录发生在MackBook环境
3、已经安装了PostgreSQL（我使用的是11版本）
4、Node开发运行环境可以正常工作

首先需要通过Node包管理器安装Prisma工具：

npm install -g prisma

然后，创建并初始化prisma项目：

prisma init prisma-study

? Set up a new Prisma server or deploy to an existing server? (Use arrow keys)
                        
  You can set up Prisma for local development (based on docker-compose)
❯ Use existing database      Connect to existing database 
  Create new database        Set up a local database using Docker 
                        
  Or deploy to an existing Prisma server:
  Demo server                Hosted demo environment incl. database (requires login) 
  Use other server           Manually provide endpoint of a running Prisma server 

选择使用已存在的数据库（Use existing database）后，回车确认选择。

? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? 
  MySQL             MySQL compliant databases like MySQL or MariaDB 
❯ PostgreSQL        PostgreSQL database 

移动上下箭头键盘按键，选择PostgreSQL后，再次回车确认选择。

? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? PostgreSQL
? Does your database contain existing data? (Use arrow keys)
❯ No 
  Yes (experimental - Prisma migrations not yet supported) 
  
Warning: Introspecting databases with existing data is currently an experimental feature. If you find any issues, please report them here: https://github.co
m/prisma/prisma/issues

提示是否在选择的数据库中包含已存在数据。因为是一个新库，所以默认选择No，然后回车确认。

? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? PostgreSQL
? Does your database contain existing data? No
? Enter database host (localhost) 

输入数据库的主机地址（注意，因为prisma会运行在docker中，所以，这儿需要配置宿主机IP，在类Linux系统上可以通过ifconfig命令来获取IP）。

? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? PostgreSQL
? Does your database contain existing data? No
? Enter database host 10.111.152.242
? Enter database port (5432) 

回车确认使用默认的Postgres数据库的端口。

? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? PostgreSQL
? Does your database contain existing data? No
? Enter database host 10.xxx.xxx.xxx（此处为你的docker宿主机IP）
? Enter database port 5432
? Enter database user 

输入数据库的用户名后回车确认。

? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? PostgreSQL
? Does your database contain existing data? No
? Enter database host 10.xxx.xxx.xxx（此处为你的docker宿主机IP）
? Enter database port 5432
? Enter database user postgres
? Enter database password 

输入数据库用户对应的密码后回车确认。

? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? PostgreSQL
? Does your database contain existing data? No
? Enter database host 10.xxx.xxx.xxx（此处为你的docker宿主机IP）
? Enter database port 5432
? Enter database user postgres
? Enter database password study
? Enter database name 

输入使用的数据库名称后回车。

? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? PostgreSQL
? Does your database contain existing data? No
? Enter database host 10.xxx.xxx.xxx（此处为你的docker宿主机IP）
? Enter database port 5432
? Enter database user postgres
? Enter database password study
? Enter database name study
? Use SSL? (Y/n)

提示是否使用安全的网络协议，这里选择不使用（输入n后回车）。

? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? PostgreSQL
? Does your database contain existing data? No
? Enter database host 10.xxx.xxx.xxx（此处为你的docker宿主机IP）
? Enter database port 5432
? Enter database user postgres
? Enter database password study
? Enter database name study
? Use SSL? No
Connecting to database 18ms
? Select the programming language for the generated Prisma client 
  Prisma TypeScript Client 
  Prisma Flow Client 
❯ Prisma JavaScript Client 
  Prisma Go Client 
  Don't generate 

这里选择产生JavaScript客户端脚本（Prisma JavaScript

Client）。
? Set up a new Prisma server or deploy to an existing server? Use existing database
? What kind of database do you want to deploy to? PostgreSQL
? Does your database contain existing data? No
? Enter database host 10.xxx.xxx.xxx（此处为你的docker宿主机IP）
? Enter database port 5432
? Enter database user postgres
? Enter database password study
? Enter database name study
? Use SSL? No
Connecting to database 18ms
? Select the programming language for the generated Prisma client Prisma JavaScript Client
Created 3 new files:                                                                          
  prisma.yml          Prisma service definition
  datamodel.prisma    GraphQL SDL-based datamodel (foundation for database)
  docker-compose.yml  Docker configuration file
Next steps:
  1. Open folder: cd prisma-study
  2. Start your Prisma server: docker-compose up -d
  3. Deploy your Prisma service: prisma deploy
  4. Read more about Prisma server:
     http://bit.ly/prisma-server-overview
Generating schema... 20ms
Saving Prisma Client (JavaScript) at /Users/chunrong.liu/dev/study/prisma-study/generated/prisma-client/

至此，Prisma项目创建并初始化完毕。
接下来按昭Next steps下面的步骤提示执行后续操作。
通过以下命令切换当前目录至刚创建的项目目录（prisma-study）中。

cd prisma-study/

通过docker编排命令在docker中运行prisma服务器。

docker-compose up -d

执行后命令行提示如下：

Creating prisma-study_prisma_1 … done

此时服务运行成功。
通过以下命令部署prisma服务。

$ prisma deploy
Creating stage default for service default ✔
Deploying service `default` to stage `default` to server `local` 476ms
Changes:
  User (Type)
  + Created type `User`
  + Created field `id` of type `GraphQLID!`
  + Created field `name` of type `String!`
  + Created field `updatedAt` of type `DateTime!`
  + Created field `createdAt` of type `DateTime!`
Applying changes 1.2s
Your Prisma GraphQL database endpoint is live:
  HTTP:  http://localhost:4466
  WS:    ws://localhost:4466

用流程器打开http://localhost:4466/链接地址，可以看到如下的UI界面。

运行如下命令可以看到演练数据：

$ prisma playground
Serving playground at http://localhost:3000/playground

此时会自动打开浏览器，并显示如下界面：

关于数据库无法连接的问题：
https://blog.csdn.net/liuchun...

官方参考资料地址：
https://www.prisma.io/docs/qu...