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本文是第二篇!
第一篇,《Java高級架構之FastDFS分布式文件集群》:https://blog.51cto.com/xvjunjie/2377669
第三篇,《FastDFS的HA架構多Group多Storage多Tracker結合SpringBoot》https://blog.51cto.com/xvjunjie/2445770
SpringBoot是由Pivotal團隊提供的全新框架,其設計目的是用來簡化新Spring應用的初始搭建以及開發過程。該框架使用了特定的方式來進行配置,從而使開發人員不再需要定義樣板化的配置。通過這種方式,Spring Boot致力于在蓬勃發展的快速應用開發領域(rapid application development)成為領導者。
創建獨立的Spring應用程序
嵌入的Tomcat,無需部署WAR文件
簡化Maven配置
自動配置Spring
提供生產就緒型功能,如指標,健康檢查和外部配置
概述
Nginx(engine x)是一個開源的,支持高并發的www服務和代理服務軟件。Nginx是俄羅斯人Igor Sysoev開發的,最初被應用到俄羅斯的大型網站(www.rambler.ru)上。后來作者將源代碼以類BSD許可證的形式開源出來供全球使用。在功能應用方面,Nginx不僅是一個優秀的Web服務軟件,還具有反向代理負載均衡和緩存的功能。在反向代理負載均衡方面類似于LVS負載均衡及HAProxy等你專業代理軟件。Nginx部署起來更加方便簡單,在緩存服務功能方面,有類似于Squid等專業的緩存服務軟件。Nginx可以運行在UNIX、Linux、MS Windows Server、Mac OS X Server、Solaris等操作系統中。
Nginx的重要特性
Nginx所具備的WWW服務特性
Nginx軟件主要企業應用
Web服務應用產品性能對比
為什么Nginx比Apache的性能高?
如何正確采用Web服務器?
關于部署,就不在重復了,如果需要請移步《Java高級架構之FastDFS分布式文件集群》:https://blog.51cto.com/xvjunjie/2377669
<dependencies>
<!-- SpringBoot的自動配置相關依賴 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>1.5.20.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<version>1.5.20.RELEASE</version>
</dependency>
<!-- 日志相關的依賴 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
<version>1.5.20.RELEASE</version>
</dependency>
<!-- 對象池相關的依賴 -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.6.0</version>
</dependency>
</dependencies>
annotation
:存放相關的注解
autoconfiguation
: 存儲自動配置類
factory
: 存放工廠類
properties
: 存放配置參數類
service
: 存放服務類一般情況下,SpringBoot都會提供相應的@EnableXxx
注解標注在應用的主啟動類上開啟某個功能:
// EnableFastdfsClient.java
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Import(FastdfsAutoConfiguration.class)
@Documented
public @interface EnableFastdfsClient {
}
下面是相關的自動配置類:
// FastdfsAutoConfiguration.java
@Configuration
@EnableConfigurationProperties(FastdfsProperties.class)
public class FastdfsAutoConfiguration {
@Autowired
private FastdfsProperties fastdfsProperties;
@Bean
@ConditionalOnMissingBean(FastdfsClientService.class)
public FastdfsClientService fastdfsClientService() throws Exception {
return new FastdfsClientService(fastdfsProperties);
}
}
創建相關的工廠類:
// StorageClientFactory.java
// 用于創建連接對象的工廠類
public class StorageClientFactory implements PooledObjectFactory<StorageClient> {
@Override
public PooledObject<StorageClient> makeObject() throws Exception {
TrackerClient client = new TrackerClient();
TrackerServer server = client.getConnection();
return new DefaultPooledObject<>(new StorageClient(server, null));
}
@Override
public void destroyObject(PooledObject<StorageClient> p) throws Exception {
p.getObject().getTrackerServer().close();
}
@Override
public boolean validateObject(PooledObject<StorageClient> p) {
return false;
}
@Override
public void activateObject(PooledObject<StorageClient> p) throws Exception {
}
@Override
public void passivateObject(PooledObject<StorageClient> p) throws Exception {
}
}
Properties類用來映射application.properties或者application.yml配置文件:
// FastdfsProperties.java
@ConfigurationProperties(prefix = "fastdfs")
public class FastdfsProperties {
// 連接超時時間
// 網絡超時時間
// 字符集編碼
// 是否使用Token
// Token加密密鑰
// 跟蹤器IP地址,多個使用分號隔開
// 連接池的連接對象最大個數
// 連接池的最大空閑對象個數
// 連接池的最小空閑對象個數
// Nginx服務器IP,多個使用分號分割
// 獲取連接對象時可忍受的等待時長(毫秒)
private String connectTimeout = "5";
private String networkTimeout = "30";
private String charset = "UTF-8";
private String httpAntiStealToken = "false";
private String httpSecretKey = "";
private String httpTrackerHttpPort = "";
private String trackerServers = "";
private String connectionPoolMaxTotal = "18";
private String connectionPoolMaxIdle = "18";
private String connectionPoolMinIdle = "2";
private String nginxServers = "";
// 需要創建相關的Setter和Getter方法
}
在Service類中封裝方法, 下面僅展示3個常用的方法:
// FastdfsClientSerivce.java
public class FastdfsClientService {
// SpringBoot加載的配置文件
// 連接池配置項
// 轉換后的配置條目
// 連接池
// Nginx服務器地址
private FastdfsProperties fdfsProp;
private GenericObjectPoolConfig config;
private Properties prop;
private GenericObjectPool<StorageClient> pool;
private String[] nginxServers;
private Logger logger;
public FastdfsClientService(FastdfsProperties fdfsProp) throws Exception {
this.fdfsProp = fdfsProp;
this.logger = LoggerFactory.getLogger(getClass());
init();
create();
info();
}
/**
* 初始化全局客戶端
*/
private void init() throws Exception {
this.prop = new Properties();
this.logger.info("FastDFS: reading config file...");
this.logger.info("FastDFS: fastdfs.connect_timeout_in_seconds=" + this.fdfsProp.getConnectTimeout());
this.logger.info("FastDFS: fastdfs.network_timeout_in_seconds=" + this.fdfsProp.getNetworkTimeout());
this.logger.info("FastDFS: fastdfs.charset=" + this.fdfsProp.getCharset());
this.logger.info("FastDFS: fastdfs.http_anti_steal_token=" + this.fdfsProp.getHttpAntiStealToken());
this.logger.info("FastDFS: fastdfs.http_secret_key=" + this.fdfsProp.getHttpSecretKey());
this.logger.info("FastDFS: fastdfs.http_tracker_http_port=" + this.fdfsProp.getHttpTrackerHttpPort());
this.logger.info("FastDFS: fastdfs.tracker_servers=" + this.fdfsProp.getTrackerServers());
this.logger.info("FastDFS: fastdfs.connection_pool_max_total=" + this.fdfsProp.getConnectionPoolMaxTotal());
this.logger.info("FastDFS: fastdfs.connection_pool_max_idle=" + this.fdfsProp.getConnectionPoolMaxIdle());
this.logger.info("FastDFS: fastdfs.connection_pool_min_idle=" + this.fdfsProp.getConnectionPoolMinIdle());
this.logger.info("FastDFS: fastdfs.nginx_servers=" + this.fdfsProp.getNginxServers());
this.prop.put("fastdfs.connect_timeout_in_seconds", this.fdfsProp.getConnectTimeout());
this.prop.put("fastdfs.network_timeout_in_seconds", this.fdfsProp.getNetworkTimeout());
this.prop.put("fastdfs.charset", this.fdfsProp.getCharset());
this.prop.put("fastdfs.http_anti_steal_token", this.fdfsProp.getHttpAntiStealToken());
this.prop.put("fastdfs.http_secret_key", this.fdfsProp.getHttpSecretKey());
this.prop.put("fastdfs.http_tracker_http_port", this.fdfsProp.getHttpTrackerHttpPort());
this.prop.put("fastdfs.tracker_servers", this.fdfsProp.getTrackerServers());
ClientGlobal.initByProperties(this.prop);
}
/**
* 顯示初始化信息
*/
private void info() {
this.logger.info("FastDFS parameter: ConnectionPoolMaxTotal ==> " + this.pool.getMaxTotal());
this.logger.info("FastDFS parameter: ConnectionPoolMaxIdle ==> " + this.pool.getMaxIdle());
this.logger.info("FastDFS parameter: ConnectionPoolMinIdle ==> " + this.pool.getMinIdle());
this.logger.info("FastDFS parameter: NginxServer ==> " + Arrays.toString(this.nginxServers));
this.logger.info(ClientGlobal.configInfo());
}
/**
* 創建連接池
*/
private void create() {
this.config = new GenericObjectPoolConfig();
this.logger.info("FastDFS Client: Creating connection pool...");
this.config.setMaxTotal(Integer.parseInt(this.fdfsProp.getConnectionPoolMaxTotal()));
this.config.setMaxIdle(Integer.parseInt(this.fdfsProp.getConnectionPoolMaxIdle()));
this.config.setMinIdle(Integer.parseInt(this.fdfsProp.getConnectionPoolMinIdle()));
StorageClientFactory factory = new StorageClientFactory();
this.pool = new GenericObjectPool<StorageClient>(factory, this.config);
this.nginxServers = this.fdfsProp.getNginxServers().split(",");
}
/**
* Nginx服務器負載均衡算法
*
* @param servers 服務器地址
* @param address 客戶端IP地址
* @return 可用的服務器地址
*/
private String getNginxServer(String[] servers, String address) {
int size = servers.length;
int i = address.hashCode();
int index = abs(i % size);
return servers[index];
}
/**
* 帶有防盜鏈的下載
*
* @param fileGroup 文件組名
* @param remoteFileName 遠程文件名稱
* @param clientIpAddress 客戶端IP地址
* @return 完整的URL地址
*/
public String autoDownloadWithToken(String fileGroup, String remoteFileName, String clientIpAddress) throws Exception {
int ts = (int) (System.currentTimeMillis() / 1000);
String token = ProtoCommon.getToken(remoteFileName, ts, ClientGlobal.getG_secret_key());
String nginx = this.getNginxServer(this.nginxServers, clientIpAddress);
return "http://" + nginx + "/" + fileGroup + "/" + remoteFileName + "?token=" + token + "&ts=" + ts;
}
/**
* 上傳文件,適合上傳圖片
*
* @param buffer 字節數組
* @param ext 擴展名
* @return 文件組名和ID
*/
public String[] autoUpload(byte[] buffer, String ext) throws Exception {
String[] upload = this.upload(buffer, ext, null);
return upload;
}
/**
* 不帶防盜鏈的下載,如果開啟防盜鏈會導致該方法拋出異常
*
* @param fileGroup 文件組名
* @param remoteFileName 遠程文件ID
* @param clientIpAddress 客戶端IP地址,根據客戶端IP來分配Nginx服務器
* @return 完整的URL地址
*/
public String autoDownloadWithoutToken(String fileGroup, String remoteFileName, String clientIpAddress) throws Exception {
if (ClientGlobal.getG_anti_steal_token()) {
this.logger.error("FastDFS Client: You've turned on Token authentication.");
throw new Exception("You've turned on Token authentication.");
}
String nginx = this.getNginxServer(this.nginxServers, clientIpAddress);
return "http://" + nginx + fileGroup + "/" + remoteFileName;
}
// 后面還有好多方法,就不一一展示了
}
為了在IDEA中使用便捷的配置提示功能,我們需要創建元數據文件(resources/spring-configuration-metadata.json):
{
"groups": [
{
"name": "fastdfs",
"type": "com.bluemiaomiao.properties.FastdfsProperties",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties"
}
],
"properties": [
{
"name": "connectTimeout",
"type": "java.lang.String",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties",
"defaultValue": "5"
},
{
"name": "networkTimeout",
"type": "java.lang.String",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties",
"defaultValue": "30"
},
{
"name": "charset",
"type": "java.lang.String",
"defaultValue": "UTF-8"
},
{
"name": "httpAntiStealToken",
"type": "java.lang.String",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties",
"defaultValue": "false"
},
{
"name": "httpSecretKey",
"type": "java.lang.String",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties"
},
{
"name": "httpTrackerHttpPort",
"type": "java.lang.Integer",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties"
},
{
"name": "trackerServers",
"type": "java.lang.String",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties"
},
{
"name": "connectionPoolMaxTotal",
"type": "java.lang.Integer",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties",
"defaultValue": "18"
},
{
"name": "connectionPoolMaxIdle",
"type": "java.lang.Integer",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties",
"defaultValue": "18"
},
{
"name": "connectionPoolMinIdle",
"type": "java.lang.Integer",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties",
"defaultValue": "2"
},
{
"name": "nginxServers",
"type": "java.lang.String",
"sourceType": "com.bluemiaomiao.properties.FastdfsProperties"
}
],
"hints": [
{
"name": "http_anti_steal_token",
"values": [
{
"value": "false"
},
{
"value": "true"
}
]
}
]
}
創建SpringBoot項目,勾選Web選項,版本選擇1.5.20
進入場景啟動器的項目目錄執行mvn clean install
將其安裝到本地
<dependency>
<groupId>com.bluemiaomiao</groupId>
<artifactId>fastdfs-spring-boot-starter</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
記得開啟IDEA的自動導入功能
fastdfs.nginx-servers=192.168.80.2:8000,192.168.80.3:8000,192.168.80.4:8000
fastdfs.tracker-servers=192.168.80.2:22122,192.168.80.3:22122,192.168.80.4:22122
fastdfs.http-secret-key=2scPwMPctXhbLVOYB0jyuyQzytOofmFCBIYe65n56PPYVWrntxzLIDbPdvDDLJM8QHhKxSGWTcr+9VdG3yptkw
fastdfs.http-anti-steal-token=true
fastdfs.http-tracker-http-port=8080
fastdfs.network-timeout=30
fastdfs.connect-timeout=5
fastdfs.connection-pool-max-idle=18
fastdfs.connection-pool-min-idle=2
fastdfs.connection-pool-max-total=18
fastdfs.charset=UTF-8
或者使用application.yml
fastdfs:
charset: UTF-8
connect-timeout: 5
http-secret-key: 2scPwMPctXhbLVOYB0jyuyQzytOofmFCBIYe65n56PPYVWrntxzLIDbPdvDDLJM8QHhKxSGWTcr+9VdG3yptkw
network-timeout: 30
http-anti-steal-token: true
http-tracker-http-port: 8080
connection-pool-max-idle: 20
connection-pool-max-total: 20
connection-pool-min-idle: 2
nginx-servers: 192.168.80.2:8000,192.168.80.3:8000,192.168.80.4:8000
tracker-servers: 192.168.80.2:22122,192.168.80.3:22122,192.168.80.4:22122
// controllers.DownloadController.java
@Controller
@RequestMapping(value = "/download")
public class DownloadController {
@Autowired
private FastdfsClientService service;
@ResponseBody
@RequestMapping(value = "/image")
public String image() throws Exception {
// 之前上傳過的數據,實際應用場景應該使用SQL數據庫來存儲
return service.autoDownloadWithToken("group1", "M00/00/00/wKhQA1ysjSGAPjXbAAVFOL7FJU4.tar.gz", "192.168.80.1");
}
}
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