package com.qxueyou.scc.teach.res.service.impl;
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//import com.example.study.springboot.background.service.HweiYunOBSService;
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//import com.example.study.springboot.config.HweiOBSConfig;
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import com.obs.services.ObsClient;
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import com.obs.services.exception.ObsException;
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import com.obs.services.model.*;
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import com.qxueyou.scc.base.model.FileMeta;
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import com.qxueyou.scc.base.model.Result;
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import com.qxueyou.scc.base.util.CollectionUtils;
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import com.qxueyou.scc.base.util.QFileUtils;
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import com.qxueyou.scc.base.util.UUIDUtils;
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import com.qxueyou.scc.config.HweiOBSConfig;
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import com.qxueyou.scc.teach.res.model.ResFile;
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import com.qxueyou.scc.teach.res.service.HweiYunOBSService;
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import com.qxueyou.scc.teach.res.service.IFileService;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.catalina.core.ApplicationPart;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import org.aspectj.util.FileUtil;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import org.springframework.web.multipart.MultipartFile;
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import javax.servlet.http.HttpServletResponse;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.*;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.TimeUnit;
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/**
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* @ClassName: HweiYunOBSServiceImpl
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* @Description: 华为云OBS服务业务层
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* @Author: wuhuiju
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* @Date: 2021-12-21 17:05
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* @Version: 1.0
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*/
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@Slf4j
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@Service
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public class HweiYunOBSServiceImpl implements HweiYunOBSService {
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private final Logger log = LogManager.getLogger(HweiYunOBSServiceImpl.class);
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@Autowired
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private HweiOBSConfig hweiOBSConfig;
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@Autowired
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FileService fileService;
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public final static String FILE_TYPE_VIDEO = "video";
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public final static String FILE_TYPE_DOC = "doc";
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public final static String FILE_TYPE_AUDIO = "audio";
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public final static String FILE_TYPE_DATA = "data";
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public final static String FILE_TYPE_IMG = "img";
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private static final Map<String, String> fileFormatMap = CollectionUtils.newStringMap("MPEG", FILE_TYPE_VIDEO,
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"AVI", FILE_TYPE_VIDEO, "MOV", FILE_TYPE_VIDEO, "ASF", FILE_TYPE_VIDEO, "WMV", FILE_TYPE_VIDEO, "NAVI",
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FILE_TYPE_VIDEO, "3GP", FILE_TYPE_VIDEO, "RAM", FILE_TYPE_VIDEO, "RA", FILE_TYPE_VIDEO, "MKV",
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FILE_TYPE_VIDEO, "F4V", FILE_TYPE_VIDEO, "RMVB", FILE_TYPE_VIDEO, "MP4", FILE_TYPE_VIDEO,
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"DOC", FILE_TYPE_DOC, "DOCX", FILE_TYPE_DOC, "PDF", FILE_TYPE_DOC, "PPT", FILE_TYPE_DOC, "PPTX",
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FILE_TYPE_DOC, "XLS", FILE_TYPE_DOC, "XLSX", FILE_TYPE_DOC,
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"MP3", FILE_TYPE_AUDIO, "WMA", FILE_TYPE_AUDIO, "WAV", FILE_TYPE_AUDIO,
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"DATA", FILE_TYPE_DATA,
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"JPG", FILE_TYPE_IMG,"JPEG", FILE_TYPE_IMG, "GIF", FILE_TYPE_IMG, "BMP", FILE_TYPE_IMG, "PNG", FILE_TYPE_IMG
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);
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@Override
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public boolean delete(String objectKey) {
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ObsClient obsClient = null;
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try {
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// 创建ObsClient实例
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obsClient = hweiOBSConfig.getInstance();
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// obs删除
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obsClient.deleteObject(hweiOBSConfig.getBucketName(),objectKey);
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} catch (ObsException e) {
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log.error("obs删除保存失败", e);
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} finally {
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hweiOBSConfig.destroy(obsClient);
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}
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return true;
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}
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@Override
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public boolean delete(List<String> objectKeys) {
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ObsClient obsClient = null;
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try {
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obsClient = hweiOBSConfig.getInstance();
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DeleteObjectsRequest deleteObjectsRequest = new DeleteObjectsRequest(hweiOBSConfig.getBucketName());
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objectKeys.forEach(x -> deleteObjectsRequest.addKeyAndVersion(x));
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// 批量删除请求
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obsClient.deleteObjects(deleteObjectsRequest);
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return true;
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} catch (ObsException e) {
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log.error("obs删除保存失败", e);
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} finally {
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hweiOBSConfig.destroy(obsClient);
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}
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return false;
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}
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@Override
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public List<FileMeta> fileUpload(MultipartFile uploadFile, String objectKey) {
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ObsClient obsClient = null;
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List<FileMeta> files = new ArrayList<FileMeta>(2);
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FileMeta fileMeta = null;
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try {
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String destPath = getDestPath(objectKey);
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String bucketName = hweiOBSConfig.getBucketName();
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obsClient = hweiOBSConfig.getInstance();
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// 判断桶是否存在
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boolean exists = obsClient.headBucket(bucketName);
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if(!exists){
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// 若不存在，则创建桶
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HeaderResponse response = obsClient.createBucket(bucketName);
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log.info("创建桶成功" + response.getRequestId());
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}
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InputStream inputStream = uploadFile.getInputStream();
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long available = inputStream.available();
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PutObjectRequest request = new PutObjectRequest(bucketName,destPath,inputStream);
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ObjectMetadata objectMetadata = new ObjectMetadata();
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objectMetadata.setContentLength(available);
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request.setMetadata(objectMetadata);
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// 设置对象访问权限为公共读
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request.setAcl(AccessControlList.REST_CANNED_PUBLIC_READ);
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PutObjectResult result = obsClient.putObject(request);
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fileMeta = new FileMeta();
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ResFile file = fileService.insertFileToDBTwo(objectKey, uploadFile.getSize(), result.getObjectUrl(), uploadFile.getContentType());
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// SetObjectMetadataRequest ObjectMetadataRequest = new SetObjectMetadataRequest(bucketName, destPath);
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// ObjectMetadataRequest.setContentDisposition("inline");
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// obsClient.setObjectMetadata(ObjectMetadataRequest);
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fileMeta.setFileId(file.getFileId());
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fileMeta.setPath(result.getObjectUrl());
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fileMeta.setFileSize(uploadFile.getSize() / 1024 + "kb");
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fileMeta.setFileType(uploadFile.getContentType());
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fileMeta.setFileName(objectKey);
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files.add(fileMeta);
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// 读取该已上传对象的URL
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log.info("已上传对象的URL" + result.getObjectUrl());
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return files;
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// return result.getObjectUrl();
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} catch (ObsException e) {
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log.error("obs上传失败", e);
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} catch (IOException e) {
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log.error("上传失败", e);
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} finally {
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hweiOBSConfig.destroy(obsClient);
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}
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return null;
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}
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@Override
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public List<FileMeta> fnepian(MultipartFile uploadFile, String objectKey) throws IOException {
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ObsClient obsClient = null;
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List<FileMeta> files = new ArrayList<FileMeta>(2);
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FileMeta fileMeta = null;
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// 每个分片的大小，用于计算文件有多少个分片。单位为字节。
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final long partSize = 10 * 1024 * 1024L; //10 MB。
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String bucketName = hweiOBSConfig.getBucketName();
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obsClient = hweiOBSConfig.getInstance();
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// objectName 是路径，分片文件最终整合的路径
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String objectName = "multipartUpload/"+objectKey;
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// 创建InitiateMultipartUploadRequest对象。
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InitiateMultipartUploadRequest request = new InitiateMultipartUploadRequest(bucketName, objectName);
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InitiateMultipartUploadResult prebuilt = obsClient.initiateMultipartUpload(request);
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InputStream inputStream = uploadFile.getInputStream();
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// 获取全局id
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String uploadId = prebuilt.getUploadId();
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// 如果并发量大的话 初始化线程池 20线程数量
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// ExecutorService executorService = Executors.newFixedThreadPool(20);
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// partTags是PartEtag的集合。PartEtag由分片的ETag和分片号组成。
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List<PartEtag> partTags = new ArrayList<PartEtag>();
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File file = MultipartFileToFile(uploadFile);
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// 计算有多少个分片
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int partCount = (int) (file.length() / partSize);
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// 如果取余数不为零则追加一个
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if (file.length() % partSize != 0) {
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partCount++;
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}
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try {
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for (int i = 0; i < partCount; i++) {
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long startPos = i * partSize;
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long curPartSize = (i + 1 == partCount) ? (file.length() - startPos) : partSize;
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// 跳过已经上传的分片。
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inputStream.skip(startPos);
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UploadPartRequest uploadPartRequest = new UploadPartRequest();
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uploadPartRequest.setBucketName(bucketName);
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uploadPartRequest.setObjectKey(objectName);
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uploadPartRequest.setUploadId(uploadId);
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uploadPartRequest.setInput(inputStream);
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// 设置分片大小。除了最后一个分片没有大小限制，其他的分片最小为100 KB。
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uploadPartRequest.setPartSize(curPartSize);
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// 设置分片号。每一个上传的分片都有一个分片号，取值范围是1~10000，如果超出此范围，Obs将返回InvalidArgument错误码。
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uploadPartRequest.setPartNumber( i + 1);
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// 每个分片不需要按顺序上传，甚至可以在不同客户端上传，obs会按照分片号排序组成完整的文件。
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UploadPartResult uploadPartResult = obsClient.uploadPart(uploadPartRequest);
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// 每次上传分片之后，ObS的返回结果包含PartETag。PartETag将被保存在partTags中。
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partTags.add(new PartEtag(uploadPartResult.getEtag(), uploadPartResult.getPartNumber()));
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}
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// 开始线程池时候使用：等待上传完成
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/* executorService.shutdown();
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while (!executorService.isTerminated())
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{
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try
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{
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executorService.awaitTermination(5, TimeUnit.SECONDS);
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}
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catch (InterruptedException e)
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{
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e.printStackTrace();
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}
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}*/
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fileMeta = new FileMeta();
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// 合并分片段
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// 在执行完成分片上传操作时，需要提供所有有效的partETags。obs收到提交的partETags后，会逐一验证每个分片的有效性。当所有的数据分片验证通过后，obs将把这些分片组合成一个完整的文件。
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CompleteMultipartUploadRequest multipartUploadRequest = new CompleteMultipartUploadRequest(bucketName, objectName, uploadId, partTags);
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// 完成分片上传。
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CompleteMultipartUploadResult completeMultipartUploadResult = obsClient.completeMultipartUpload(multipartUploadRequest);
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// 返回全局id，桶名，对象名称 用于后续处理 比如取消分片上传，查询分片信息等
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fileMeta.setPath(completeMultipartUploadResult.getObjectUrl());
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fileMeta.setFileSize(uploadFile.getSize() / 1024 + "kb");
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fileMeta.setFileType(uploadFile.getContentType());
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fileMeta.setFileName(objectKey);
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files.add(fileMeta);
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return files;
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}catch (Exception e){
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log.error("分片循环上传失败！"+e.getMessage());
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return null;
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}
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}
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public static File MultipartFileToFile(MultipartFile multiFile) {
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// 获取文件名
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String fileName = multiFile.getOriginalFilename();
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// 获取文件后缀
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String prefix = fileName.substring(fileName.lastIndexOf("."));
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// 若须要防止生成的临时文件重复,能够在文件名后添加随机码
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try {
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File file = File.createTempFile(getFileNameNotPrefix(fileName), prefix);
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multiFile.transferTo(file);
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return file;
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} catch (Exception e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* 获取文件名不带后缀
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*
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* @param fileName
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* @return
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*/
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public static String getFileNameNotPrefix(String fileName) {
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String prefix = fileName.substring(fileName.indexOf("."));
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int num = prefix.length();//得到后缀名长度
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String fileOtherName = fileName.substring(0, fileName.length() - num);//得到文件名。去掉了后缀
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return fileOtherName;
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}
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private String getDestPath(String name) {
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String fileType = getFileType(name);
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StringBuffer path = new StringBuffer(128);
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// path.append(fileType);
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Calendar now = new GregorianCalendar();
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// path.append('/');
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// path.append(now.get(Calendar.YEAR));
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// path.append(StringUtils.leftPad(String.valueOf(now.get(Calendar.MONTH)), 2, '0'));
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// path.append('/');
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// path.append(now.get(Calendar.DAY_OF_MONTH));
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// path.append('/');
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path.append(UUIDUtils.UUID());
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path.append('.');
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path.append(QFileUtils.getFileFormat(name));
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return path.toString();
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}
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private String getFileType(String name) {
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String fileType = fileFormatMap.get(QFileUtils.getFileFormat(name));
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return StringUtils.isEmpty(fileType) ? FILE_TYPE_DATA : fileType;
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}
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@Override
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public InputStream fileDownload(String objectKey) {
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ObsClient obsClient = null;
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try {
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String bucketName = hweiOBSConfig.getBucketName();
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obsClient = hweiOBSConfig.getInstance();
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ObsObject obsObject = obsClient.getObject(bucketName, objectKey);
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return obsObject.getObjectContent();
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} catch (ObsException e) {
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log.error("obs文件下载失败", e);
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} finally {
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hweiOBSConfig.destroy(obsClient);
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}
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return null;
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}
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}
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