前端技術之：Prisma Demo服務部署過程記錄

安裝前提條件：
一、已經安裝了docker運行環境
二、如下命令執行記錄發生在MackBook環境
三、已經安裝了PostgreSQL（我使用的是11版本）
四、Node開發運行環境能夠正常工做

首先須要經過Node包管理器安裝Prisma工具：

npm install -g prisma

而後，建立並初始化prisma項目：

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

選擇使用已存在的數據庫（Use existing database）後，回車確認選擇。

? 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

移動上下箭頭鍵盤按鍵，選擇PostgreSQL後，再次回車確認選擇。

? 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

提示是否在選擇的數據庫中包含已存在數據。由於是一個新庫，因此默認選擇No，而後回車確認。

? 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)

輸入數據庫的主機地址（注意，由於prisma會運行在docker中，因此，這兒須要配置宿主機IP，在類Linux系統上能夠經過ifconfig命令來獲取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)

回車確認使用默認的Postgres數據庫的端口。

? 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（此處爲你的docker宿主機IP）
? Enter database port 5432
? Enter database user

輸入數據庫的用戶名後回車確認。

? 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（此處爲你的docker宿主機IP）
? Enter database port 5432
? Enter database user postgres
? Enter database password

輸入數據庫用戶對應的密碼後回車確認。

? 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（此處爲你的docker宿主機IP）
? Enter database port 5432
? Enter database user postgres
? Enter database password study
? Enter database name

輸入使用的數據庫名稱後回車。

? 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（此處爲你的docker宿主機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網絡協議，這裏選擇不使用（輸入n後回車）。

? 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（此處爲你的docker宿主機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

這裏選擇產生JavaScript客戶端腳本（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（此處爲你的docker宿主機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項目建立並初始化完畢。
接下來按昭Next steps下面的步驟提示執行後續操做。
經過如下命令切換當前目錄至剛建立的項目目錄（prisma-study）中。

cd prisma-study/

經過docker編排命令在docker中運行prisma服務器。

docker-compose up -d

執行後命令行提示以下：

Creating prisma-study_prisma_1 … done

此時服務運行成功。
經過如下命令部署prisma服務。

$ 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

用流程器打開http://localhost:4466/連接地址，能夠看到以下的UI界面。

運行以下命令能夠看到演練數據：

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

此時會自動打開瀏覽器，並顯示以下界面：

關於數據庫沒法鏈接的問題：
https://blog.csdn.net/liuchun...

官方參考資料地址：
https://www.prisma.io/docs/qu...