首先,对于长标题感到抱歉。Rust AWS API网关服务代理使用原始https请求上传S3文件
我已经设置了一个api网关作为s3代理,所以我可以通过向api url发送一个PUT请求来上传文件。该API工作正常(或者至少我认为它),但似乎只能正确上传文本文件。
对于上传的文本文件(例如Content-Type = text/plain),本地文件的大小与上传到s3存储区的文件大小相同。但是,二进制文件并非如此(例如,Content-Type = application/pdf)。 s3桶中的文件具有更大的尺寸。当我从s3下载二进制文件时,我无法打开它们,它们已损坏。
这里是铁锈代码发送请求,我使用hyper's http client:
match File::open(file.as_path()) {
Err(_) => Err("Failed to open file".to_owned()),
Ok(mut openned_file) => {
let file_mime = mime_guess::guess_mime_type(file.as_path());
let connector = HttpsConnector::new(OpensslClient::default());
let url_str = format!("https://my.api.com/upload/{}",
file.file_name().unwrap().to_str().unwrap());
let mut client =
Request::with_connector(Method::Put, Url::parse(&url_str).unwrap(), &connector)
.unwrap();
client.headers_mut().set(ContentType(file_mime.clone()));
// client.headers_mut().set(ContentLength(openned_file.metadata().unwrap().len()));
let file_mime_str = file_mime.to_string();
let mut buffer: [u8; 4096] = [0; 4096];
let mut uploaded: usize = 0;
let request = match file_mime {
Mime(TopLevel::Text, _, _) |
Mime(TopLevel::Application, SubLevel::Javascript, _) => {
let mut request = client.start().unwrap();
println!("Uploading text ...",);
while let Ok(read_count) = openned_file.read(&mut buffer) {
if read_count > 0 {
println!("Uploading {} bytes", read_count);
request.write_all(&buffer[0..read_count]);
uploaded += read_count;
} else {
request.flush();
println!("File mime: {}", file_mime_str);
println!("File size: {}, Total uploaded: {}",
openned_file.metadata().unwrap().len(),
uploaded);
break;
}
}
request
}
_ => {
// client.headers_mut()
// .set_raw("Content-Encoding", vec![b"base64".to_vec()]);
let mut request = client.start().unwrap();
let mut config = MIME;
config.line_length = None;
println!("Uploading binary ...",);
while let Ok(read_count) = openned_file.read(&mut buffer) {
if read_count > 0 {
println!("Uploading {} bytes", read_count);
request.write_all(&buffer[0..read_count]);
// let base64_str = buffer[0..read_count].to_base64(STANDARD);
// request.write_all(base64_str.into_bytes().as_slice());
uploaded += read_count;
} else {
request.flush();
println!("File mime: {}", file_mime_str);
println!("File size: {}, Total uploaded: {}",
openned_file.metadata().unwrap().len(),
uploaded);
break;
}
}
request
}
};
match request.send() {
Err(err) => Err(format!("{}", err)),
Ok(mut response) => {
let mut rep_str = String::new();
response.read_to_string(&mut rep_str);
Err(format!("{}", rep_str))
}
}
你可以从注释掉的代码中看到的,我已经使用内容编码=的base64编码和尝试从文件中读取的字节上传。但Content-Encoding = base64似乎不是s3接受的有效编码类型。无论何时我设置Content-Encoding,我都无法完全上传(500:内部服务器错误,我甚至无法在s3存储区中看到大小错误的文件)。但文本文件正在完美工作。
参考:
- http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPUT.html
- https://developer.salesforce.com/forums/?id=906F0000000BMDFIA4