一、Ceph Swift API接口开发
Swift是由Rackspace开发的用来为云计算提供可扩展存储的项目。专注于对象存储， 并提供一套REST风格的Api来访问， 与Ceph强一致性不同， 它是最终一致性。两者都是优秀的开源项目， 并无明显优劣之分，在使用场景上有所不同， 如果是专注于对象存储， 那么可以选择swift即可满足需要， 如果还有块存储要求， 那么选择Ceph更为合适。这里选择Ceph， 因为通过网关可以适配兼容swift api， 同时在数据访问上具有较强的扩展性。
1.1准备工作
创建Swift用户, 用于接口请求认证，在140上执行下面命令
sudo radosgw-admin user create --subuser="cephtester:subtester" -- uid="cephtester" --display-name="cephtester" --key-type=swift --secret="ljx" - -access=full
uid 为主用户， subuser为子用户信息， secret指定密钥， 不指定则随机生成， access拥有权限设定,代码中需使用返回信息中的user和secret_key。
{ "user_id": "cephtester", "display_name": "cephtester", "email": "", "suspended": 0, "max_buckets": 1000, "auid": 0, "subusers": [ { "id": "cephtester:subtester", "permissions": "full-control" } ], "keys": [], "swift_keys": [ { "user": "cephtester:subtester", "secret_key": "ljx" } ], "caps": [], "op_mask": "read, write, delete", "default_placement": "", "placement_tags": [], "bucket_quota": { "enabled": false, "check_on_raw": false, "max_size": -1, "max_size_kb": 0, "max_objects": -1 }, "user_quota": { "enabled": false, "check_on_raw": false, "max_size": -1, "max_size_kb": 0, "max_objects": -1 }, "temp_url_keys": [], "type": "rgw", "mfa_ids": [] }
创建管理员账号：
radosgw-admin user create --uid=mgruser --display-name=mgruser --system
{ "user_id": "mgruser", "display_name": "mgruser", "email": "", "suspended": 0, "max_buckets": 1000, "auid": 0, "subusers": [], "keys": [ { "user": "mgruser", "access_key": "KI0XONO70L11Q9XGRE3C", "secret_key": "RHkmPPMvkvy10mi4kmJA3vStJe2bmcoArYYsDwn6" } ], "swift_keys": [], "caps": [], "op_mask": "read, write, delete", "system": "true", "default_placement": "", "placement_tags": [], "bucket_quota": { "enabled": false, "check_on_raw": false, "max_size": -1, "max_size_kb": 0, "max_objects": -1 }, "user_quota": { "enabled": false, "check_on_raw": false, "max_size": -1, "max_size_kb": 0, "max_objects": -1 }, "temp_url_keys": [], "type": "rgw", "mfa_ids": [] }
根据生成的access_key与secret_key， 执行：这两个值是上面生成的
ceph dashboard set-rgw-api-access-key KI0XONO70L11Q9XGRE3C ceph dashboard set-rgw-api-secret-key RHkmPPMvkvy10mi4kmJA3vStJe2bmcoArYYsDwn6
打开管理界面，http://192.168.32.140:8443/#/rgw/user 可以查看到我们刚才创建的两个用户：
1.2、文件服务器搭建
搭建一个单独的Maven工程，专门用于实现文件上传和文件下载，工程坐标如下：
POM.XML
<?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"> <parent> <artifactId>spring-cloud-service</artifactId> <groupId>com.ghy</groupId> <version>0.0.1-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <groupId>com.ghy</groupId> <artifactId>spring-cloud-file-service</artifactId> <description> 文件上传服务 </description> <dependencies> <!-- Rados Java Api依赖 --> <dependency> <groupId>com.ceph</groupId> <artifactId>rados</artifactId> <version>0.6.0</version> </dependency> <!-- Cephfs 文件系统依赖 --> <dependency> <groupId>com.ceph</groupId> <artifactId>libcephfs</artifactId> <version>0.80.5</version> </dependency> <!--swift--> <dependency> <groupId>org.javaswift</groupId> <artifactId>joss</artifactId> <version>0.10.2</version> </dependency> </dependencies> </project>
bootstrap.yml
server: port: 8082 spring: application: name: spring-cloud-file-service cloud: nacos: config: file-extension: yaml server-addr: 192.168.32.197:8848 discovery: #Nacos的注册地址 server-addr: 192.168.32.197:8848 ceph: username: cephtester:subtester #Ceph配置 主用户名：子用户名 password: ljx #秘钥 authUrl: http://192.168.32.195:8443/auth/1.0 #接口访问路径 defaultContainerName: user_datainfo #默认容器名字(可以自己随便写无所谓) #图片路径 cephurl: http://localhost:8082/file/download/ #日志配置 logging: pattern: console: "%msg%n"
接下来创建一个ContainerConfig类来完成配置文件中ceph的初始化操作
@Data @Configuration @ConfigurationProperties(prefix = "ceph") public class ContainerConfig { private String username; private String password; private String authUrl; private String defaultContainerName; /***** * 1、创建账号信息 */ @Bean public Account account(){ AccountConfig config = new AccountConfig(); config.setUsername(username); config.setPassword(password); config.setAuthUrl(authUrl); config.setAuthenticationMethod(AuthenticationMethod.BASIC); return new AccountFactory(config).createAccount(); } /***** * 2、创建容器对象 */ @Bean public Container container(){ Container container = account().getContainer(defaultContainerName); if(!container.exists()){ return container.create(); } return container; } }
创建文件上传下载工具类FileHandler ，代码如下：
@Component public class FileHandler { @Autowired private Container container; /**** * 文件上传 */ public void upload(String filename,byte[] buffer){ //获取容器 StoredObject object = container.getObject(filename); //文件上传 object.uploadObject(buffer); } /*** * 文件下载 */ public byte[] download(String filename){ //获取容器 StoredObject object = container.getObject(filename); //下载 byte[] bytes = object.downloadObject(); return bytes; } }
控制器创建：FileController类
@RestController @RequestMapping(value = "/file") public class FileController { @Autowired private FileHandler fileHandler; /**** * 文件上传 * @param file * @return */ @PostMapping(value = "/upload") public RespResult upload(MultipartFile file) throws IOException { //调用 fileHandler.upload(file.getOriginalFilename(),file.getBytes()); return RespResult.ok(); } /**** * 文件下载 * @return */ @GetMapping(value = "/download/{filename}") public void download(@PathVariable String filename, HttpServletResponse response) throws IOException { //调用 byte[] buffer = fileHandler.download(filename); ServletOutputStream os = response.getOutputStream(); os.write(buffer); os.flush(); os.close(); } }
创建启动类：SpringCloudFileServiceApplication
@SpringBootApplication(exclude = DataSourceAutoConfiguration.class) public class SpringCloudFileServiceApplication { public static void main(String[] args) { SpringApplication.run(SpringCloudFileServiceApplication.class,args); } }
文件上传测试http://localhost:8082/file/upload
文件下载测试：http://localhost:8082/file/download/1624446315(1).jpg
