上传回调是指客户端在请求时携带回调（Callback）参数，服务端在上传完成后，发送同步的 POST 回调请求到 CallBack 中指定的第三方应用服务器，在服务器确认接受并返回结果后，才将所有结果返回给客户端。
关于上传回调的详细介绍，请参见上传回调。
#include "TosClientV2.h"
using namespace VolcengineTos;
int main(void){
// 初始化 TOS 账号信息
// Your Region 填写 Bucket 所在 Region
std::string region = "Your Region";
std::string accessKey = std::getenv("TOS_ACCESS_KEY");
std::string secretKey = std::getenv("TOS_SECRET_KEY");
// 填写 Bucket 名称，例如 examplebucket
std::string bucketName = "examplebucket";
// 填写Object完整路径，完整路径中不能包含Bucket名称，例如exampledir/exampleobject.txt。
std::string objectName = "exampledir/exampleobject.txt";
// 上传回调参数，需要经过 base64 编码的 Json 格式字符串，具体见上传回调章节详细介绍
std::string callback = "your callback param";
// 上传回调参数变量，需要经过 base64 编码的 Json 格式字符串，具体见上传回调章节详细介绍
std::string callbackVar = "your callback custom variable";
// 初始化网络等资源
InitializeClient();
// 创建交互的 client
TosClientV2 client(region, accessKey, secretKey);
// 需要上传的对象数据，以 stringstream 的形式上传
std::string data("Object data to be uploaded");
auto ss = std::make_shared<std::stringstream>(data);
PutObjectV2Input input(bucketName, objectName, ss);
// 传入上传回调相关参数
input.setCallBack(callback);
input.setCallBackVar(callbackVar);
auto output = client.putObject(input);
if (!output.isSuccess()) {
// 异常处理
std::cout << "PutObject failed." << output.error().String() << std::endl;
// 释放网络等资源
CloseClient();
return -1;
}
std::cout << "PutObject success. the object etag:" << output.result().getETag() << std::endl;
// 释放网络等资源
CloseClient();
return 0;
}
#include "TosClientV2.h"
using namespace VolcengineTos;
static int64_t getFileSize(const std::string& file)
{
std::fstream f(file, std::ios::in | std::ios::binary);
f.seekg(0, f.end);
int64_t size = f.tellg();
f.close();
return size;
}
int main(void){
// 初始化 TOS 账号信息
// Your Region 填写 Bucket 所在 Region
std::string region = "Your Region";
std::string accessKey = std::getenv("TOS_ACCESS_KEY");
std::string secretKey = std::getenv("TOS_SECRET_KEY");
// 填写 Bucket 名称，例如 examplebucket
std::string bucketName = "examplebucket";
// 填写Object完整路径，完整路径中不能包含Bucket名称，例如exampledir/exampleobject.txt。
std::string objectName = "exampledir/exampleobject.txt";
// 上传回调参数，需要经过 base64 编码的 Json 格式字符串，具体见上传回调章节详细介绍
std::string callback = "your callback param";
// 上传回调参数变量，需要经过 base64 编码的 Json 格式字符串，具体见上传回调章节详细介绍
std::string callbackVar = "your callback custom variable";
// 初始化网络等资源
InitializeClient();
// 创建交互的 client
TosClientV2 client(region, accessKey, secretKey);
// 初始化分片上传事件
CreateMultipartUploadInput input(bucketName, objectName);
// 可以指定 ACL，StorageClass，用户自定义元数据等
input.setAcl(ACLType::PublicRead);
input.setStorageClass(StorageClassType::IA);
input.setMeta({{"self-test", "yes"}});
auto upload = client.createMultipartUpload(input);
if (!upload.isSuccess()) {
// 异常处理
std::cout << "createMultipartUpload failed." << upload.error().String() << std::endl;
// 释放网络等资源
CloseClient();
return -1;
}
std::cout << "createMultipartUpload success." << std::endl;
// 准备上传的文件
std::string fileToUpload = "yourLocalFilename";
// 5MB
int64_t partSize = 5 * 1024 * 1024;
std::vector<UploadedPartV2> partResList;
auto fileSize = getFileSize(fileToUpload);
int partCount = static_cast<int>(fileSize / partSize);
// 计算分片个数
if (fileSize % partSize != 0) {
partCount++;
}
// 对每一个分片进行上传
auto uploadId = upload.result().getUploadId();
for (int i = 1; i <= partCount; i++) {
auto offset = partSize * (i - 1);
auto size = (partSize < fileSize - offset) ? partSize : (fileSize - offset);
std::shared_ptr<std::iostream> content = std::make_shared<std::fstream>(fileToUpload, std::ios::in|std::ios::binary);
content->seekg(offset, std::ios::beg);
UploadPartV2Input uploadPartInput(bucketName, objectName,uploadId, size,i,content);
auto uploadPartOutput = client.uploadPart(uploadPartInput);
if (!uploadPartOutput.isSuccess()) {
std::cout << "uploadPart failed." << upload.error().String() << std::endl;
// 释放网络等资源
CloseClient();
return -1;
}
UploadedPartV2 part(i, uploadPartOutput.result().getETag());
partResList.push_back(part);
}
// 完成分片上传
CompleteMultipartUploadV2Input completeMultipartUploadInput(bucketName, objectName, uploadId, partResList);
auto com = client.completeMultipartUpload(completeMultipartUploadInput);
// 传入上传回调相关参数
completeMultipartUploadInput.setCallBack(callback);
completeMultipartUploadInput.setCallBackVar(callbackVar);
if (!com.isSuccess()) {
// 异常处理
std::cout << "CompleteMultipartUpload failed." << upload.error().String() << std::endl;
// 释放网络等资源
CloseClient();
return -1;
}
std::cout << "CompleteMultipartUpload success." << com.result().getRequestInfo().getRequestId() << std::endl;
// 释放网络等资源
CloseClient();
return 0;
}