SpringCloud初體驗:5、Sidecar 將 PHP 這類非 Java 生態語言的服務接入 Spring Cloud SpringCloud初體驗:3、Feign 服務間調用(FeignCl

 先起一個 Sidecar 服務,一個PHP服務一個應用,和PHP服務部署在同一臺機子,經過 localhost 訪問,這樣就解決了網絡開銷,至關於本地進程間調用php

Sidecar 服務比較簡單,html

一、這裏記錄下 maven 的配置java

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cn.taxiong</groupId>
    <artifactId>tx_php_server_side_car</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>tx_php_server_side_car</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <!--配置倉庫-->
    <repositories>
        <repository>
            <id>aliRepository</id>
            <name>aliRepository</name>
            <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <!-- cloud -->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-netflix-sidecar</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>


</project>
View Code

 

二、sidecar 相關的配置,及註冊中心的配置laravel

spring:
  application:
    name: tx-php-server-sidecar

#服務註冊中心端口號
server:
  port: 8203

#服務註冊中心實例的主機名、端口
#是否向服務註冊中心註冊本身
#是否檢索服務
#服務註冊中心的配置內容,指定服務註冊中心的位置
eureka:
  port: 8200
  instance:
    hostname: localhost
  client:
    register-with-eureka: true
    fetch-registry: true
    serviceUrl:
      defaultZone: http://${eureka.instance.hostname}:${eureka.port}/eureka/

sidecar:
  port: 1215
  instance:
    hostname: localhost
  health-uri: http://${sidecar.instance.hostname}:${sidecar.port}/health

 

三、服務啓動類 @EnableSidecarspring

 

 四、還須要在PHP服務一個檢查服務的接口或文件, 注意響應頭類型 Content-Typeapache

 以 laravel 框架爲例子,配置後的地址是 http://127.0.0.1:1215/healthjson

Route::get('health', function () {
    $content = '{ "status" : "UP" }';
    $status = 200;
    $value = 'application/json; charset=utf-8';
    return response($content, $status)
        ->header('Content-Type', $value);
});

 

 

 

 

這是經過 Eureka 中心頁面,看見 Sidecar 已經註冊上去,注意若是 PHP 的 health 頁面的響應內容或者響應頭不對的話, Sidecar 服務的 UP 狀態會顯示 DOWN網絡

 

 

  這裏是 PHP 服務的默認頁面app

 

 

 

  這裏是經過 Spring Cloud gateway 轉發後的 PHP 服務頁面負載均衡

 

 

 

 

服務間調用

1、PHP 服務調用 Java 服務的用法(調用host地址是Sidecar的地址,URi爲服務名加接口地址,URi的拼裝和Feign同樣)

 

<?php
/**
 * Created by PhpStorm.
 * User: liugx
 * Date: 2018/9/9
 * Time: 下午12:57
 */

namespace App\Http\Controllers;

use App\Exceptions\BusinessException;
use GuzzleHttp\Client;

class TestController extends Controller
{
    /**
     * @return \Psr\Http\Message\StreamInterface
     * @throws BusinessException
     */
    public function test()
    {
        // Sidecar的端口號(本地調用)
        $host = 'http://localhost:8203';
        // 註冊到Eureka的服務名稱
        $javaServiceName = 'tx-java-server';
        // 要調用服務的接口URL
        $func = '/';
        // 經過Sidecar調用服務的URL
        $uri = "/{$javaServiceName}{$func}";

        $base_uri = $host;
        $client = new Client([
            // Base URI is used with relative requests
            'base_uri' => $base_uri,
            'timeout' => 3.0,
        ]);
        $params = [];
        try {
            $response = $client->request('GET', $uri, [
                'query' => $params
            ]);
        } catch (\GuzzleHttp\Exception\GuzzleException  $ex) {

            throw new BusinessException("抱歉,網絡異常:{$ex->getMessage()}");
        }

        return $response->getBody();
    }
}
View Code

 

2、Java 服務調用 PHP 服務的用法

直接用FeignClient作服務間調用

SpringCloud初體驗:3、Feign 服務間調用(FeignClient)、負載均衡(Ribbon)、容錯/降級處理(Hystrix)

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