对于上传媒体,我的客户端将向服务器发送请求:
message GetMediaUploadCredRequest {
media.MediaType.Enum media_type = 1;
media.Extension.Enum extension = 2;
string file_name = 3;
bool is_private = 4;
string uploaded_by = 5;
}
服务器将生成一个SAS令牌(类似于来自AWS的presigned_url
),http_header
将发送回客户端.
message GetMediaUploadCredResponse {
string upload_credential_url = 1;
map<string, string> https_headers = 2;
string media_id = 3;
}
然后,客户端将使用https_headers
向URL发出PUT请求,上传过程将完成.
具体实现如下:
public class StorexServiceImpl extends StorexServiceGrpc.StorexServiceImplBase {
private static final Logger log = LoggerFactory.getLogger(StorexServiceImpl.class);
private static final String STORAGE_ACCOUNT_CONNECTION_STRING = "<connection-string>";
private static final String CONTAINER_NAME = "<container-name>";
@Override
public void getMediaUploadCred(GetMediaUploadCredRequest request, StreamObserver<GetMediaUploadCredResponse> response) {
try{
MediaType.Enum mediaType = request.getMediaType();
Extension.Enum extension = request.getExtension();
String fileName = String.format("%s.%s", UUID.randomUUID(), extension.toString());
BlobServiceClient blobServiceClient = new BlobServiceClientBuilder().connectionString(STORAGE_ACCOUNT_CONNECTION_STRING).buildClient();
BlobContainerClient containerClient = blobServiceClient.getBlobContainerClient(CONTAINER_NAME);
BlobClient blobClient = containerClient.getBlobClient(fileName);
BlobHttpHeaders headers = new BlobHttpHeaders().setContentEncoding("gzip");
BlobSasPermission permission = new BlobSasPermission().setWritePermission(true); // Set the permission to allow uploading
OffsetDateTime expiryTime = OffsetDateTime.now().plusHours(1); // Set the expiration time to 1 hour from now
BlobServiceSasSignatureValues sasValues = new BlobServiceSasSignatureValues(expiryTime, permission)
.setProtocol(SasProtocol.HTTPS_HTTP);
String sasUrl = blobClient.generateSas(sasValues);
Map<String, String> httpHeaders = new TreeMap<>();
httpHeaders.put("Content-Type", getContentType(mediaType, extension));
if(!request.getIsPrivate()) {
httpHeaders.put("x-amz-acl", "public-read");
}
String blobId = blobClient.getBlobName(); // get the ID of the blob
GetMediaUploadCredResponse res = GetMediaUploadCredResponse.newBuilder()
.setMediaId(blobId) // set the blob ID in the response
.setUploadCredentialUrl(sasUrl)
.putAllHttpsHeaders(httpHeaders)
.build();
response.onNext(res);
response.onCompleted();
} catch (Exception e){}
super.getMediaUploadCred(request, response);
}
private String getContentType(MediaType.Enum mediaType, Extension.Enum extension) {
if(mediaType == MediaType.Enum.IMAGE) {
return "image/" + extension.toString().toLowerCase();
} else if(mediaType == MediaType.Enum.AUDIO) {
return "audio/mp3";
} else if(mediaType == MediaType.Enum.VIDEO) {
return "audio/mp4";
} else if(mediaType == MediaType.Enum.FILE) {
return "application/" + extension.toString().toLowerCase();
}
return "binary/octet-stream";
}
}
但作为结果,我得到了这个:
{
"uploadCredentialUrl": "sv=2021-10-04&spr=https%2Chttp&se=2023-03-24T13%3A36%3A38Z&sr=b&sp=w&sig=JUXXe1Qi13VWipgFWzx70mTOsVqadQCjmIF%2BxRl14cs%3D",
"httpsHeaders": {
"Content-Type": "image/jpeg"
},
"mediaId": "0ae4a0c5-167d-4a32-9752-0ad0d2b67e66.JPEG"
}
PloadCredentialUrl看起来很奇怪,根本不像一个实际的URL.
Update 1:个
找到了这个post.因此,我对代码进行了一些更改:
public void getMediaUploadCred(GetMediaUploadCredRequest request, StreamObserver<GetMediaUploadCredResponse> response) {
try{
MediaType.Enum mediaType = request.getMediaType();
Extension.Enum extension = request.getExtension();
String fileName = String.format("%s.%s", UUID.randomUUID(), extension.toString());
log.info("New Implementations Started");
SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
fmt.setTimeZone(TimeZone.getTimeZone("UTC"));
Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
cal.add(Calendar.DATE, -2);
String start = fmt.format(cal.getTime());
cal.add(Calendar.DATE, 4);
String expiry = fmt.format(cal.getTime());
SecretKeySpec secretKey = new SecretKeySpec(Base64.getDecoder().decode(STORAGE_ACCOUNT_KEY), "HmacSHA256");
Mac sha256HMAC = Mac.getInstance("HmacSHA256");
sha256HMAC.init(secretKey);
String resource ="sc";
String permissions ="rwdlac";
String service = "b";
String apiVersion="2019-07-07";
String stringToSign = STORAGE_ACCOUNT_NAME + "\n" +
permissions +"\n" + // signed permissions
service+"\n" + // signed service
resource+"\n" + // signed resource type
start + "\n" + // signed start
expiry + "\n" + // signed expiry
"\n" + // signed IP
"https\n";
log.info("string to sign: {}", stringToSign);
String signature=Base64.getEncoder().encodeToString(sha256HMAC.doFinal(stringToSign.getBytes("UTF-8")));
String sasToken = "sv=" + apiVersion +
"&ss=" + service+
"&srt=" + resource+
"&sp=" +permissions+
"&se=" + URLEncoder.encode(expiry, "UTF-8") +
"&st=" + URLEncoder.encode(start, "UTF-8") +
"&spr=https" +
"&sig=" + URLEncoder.encode(signature,"UTF-8");
log.info("sas token: {}", sasToken);
String resourceUrl = "https://" + STORAGE_ACCOUNT_NAME + ".blob.core.windows.net/" + CONTAINER_NAME + "?comp=block&" + sasToken;
Map<String, String> httpHeaders = new TreeMap<>();
httpHeaders.put("Content-Type", getContentType(mediaType, extension));
if(!request.getIsPrivate()) {
httpHeaders.put("x-amz-acl", "public-read");
}
GetMediaUploadCredResponse res = GetMediaUploadCredResponse.newBuilder()
.setMediaId("blob id") // set the blob ID in the response
.setUploadCredentialUrl(resourceUrl)
.putAllHttpsHeaders(httpHeaders)
.build();
response.onNext(res);
response.onCompleted();
} catch (Exception e){}
}
我得到的回复是:
{
"uploadCredentialUrl": "https://<STORAGE_ACCOUNT>.blob.core.windows.net/<CONTAINER_NAME>?comp=block&sv=2019-07-07&ss=b&srt=sc&sp=rwdlac&se=2023-03-28&st=2023-03-24&spr=https&sig=RpdV8prUgjzFApNo6bkuuiRAPHnw1mqww5l42cwVwyY%3D",
"httpsHeaders": {
"Content-Type": "image/jpeg"
},
"mediaId": "blob id"
}
但当我试着这样做时:
curl -X PUT -T ~/Downloads/gfx100s_sample_04_thum-1.jpg -H "x-ms-date: $(date -u)" "https://<STORAGE_ACCOUNT>.blob.core.windows.net/<CONTAINER_NAME>/myimage.jpg?comp=block&sv=2019-07-07&ss=b&srt=sc&sp=rwdlac&se=2023-03-28&st=2023-03-24&spr=https&sig=RpdV8prUgjzFApNo6bkuuiRAPHnw1mqww5l42cwVwyY%3D"
我得到了这个:
<?xml version="1.0" encoding="utf-8"?><Error><Code>AuthenticationFailed</Code><Message>Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.
RequestId:337c6e4d-301e-0019-7ebd-5f3baf000000
Time:2023-03-26T08:30:28.5705948Z</Message><AuthenticationErrorDetail>Signature did not match. String to sign used was storageapollodevappstro
rwdlac
b
sc
2023-03-24
2023-03-28
https
2019-07-07
</AuthenticationErrorDetail></Error>%
Update 2:个
我已经按照jccampanero准则更新了代码:
@Override
public void getMediaUploadCred(GetMediaUploadCredRequest request, StreamObserver<GetMediaUploadCredResponse> response) {
BlobServiceClient blobServiceClient = new BlobServiceClientBuilder().connectionString(STORAGE_ACCOUNT_CONNECTION_STRING).buildClient();
BlobContainerClient containerClient = blobServiceClient.getBlobContainerClient(CONTAINER_NAME);
BlobSasPermission permission = new BlobSasPermission().setReadPermission(true).setWritePermission(true);
OffsetDateTime expiryTime = OffsetDateTime.now().plusMinutes(30);
String blobName = containerClient.getBlobClient(request.getFileName()).getBlobName();
String sasToken = generateSasToken(STORAGE_ACCOUNT_NAME, STORAGE_ACCOUNT_KEY, CONTAINER_NAME, blobName, permission, expiryTime);
String url = String.format("https://%s.blob.core.windows.net/%s/%s?%s", STORAGE_ACCOUNT_NAME, CONTAINER_NAME, request.getFileName(), sasToken);
GetMediaUploadCredResponse res = GetMediaUploadCredResponse.newBuilder()
.setMediaId(blobName)
.setUploadCredentialUrl(url)
.build();
response.onNext(res);
response.onCompleted();
}
private static String generateSasToken(String accountName, String accountKey, String containerName, String blobName, BlobSasPermission permission, OffsetDateTime expiryTime) {
String sasToken = null;
try {
String signedPermissions = permission.toString();
String signedStart = OffsetDateTime.now().format(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
String signedExpiry = expiryTime.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
String canonicalizedResource = String.format("/blob/%s/%s/%s", accountName, containerName, blobName);
String signedVersion = "2020-12-06";
String stringToSign = signedPermissions + "\n" +
signedStart + "\n" +
signedExpiry + "\n" +
canonicalizedResource + "\n" +
"\n" + // signedKeyObjectId
"\n" + // signedKeyTenantId
"\n" + // signedKeyStart
"\n" + // signedKeyExpiry
"\n" + // signedKeyService
"\n" + // signedKeyVersion
"\n" + // signedAuthorizedUserObjectId
"\n" + // signedUnauthorizedUserObjectId
"\n" + // signedCorrelationId
"\n" + // signedIP
"https\n" + // signedProtocol
signedVersion + "\n" +
"\n" + // signedResource
"\n" + // signedSnapshotTime
"\n" + // signedEncryptionScope
"\n" + // rscc
"\n" + // rscd
"\n" + // rsce
"\n" + // rscl
"\n"; // rsct
Mac mac = Mac.getInstance("HmacSHA256");
mac.init(new SecretKeySpec(Base64.getDecoder().decode(accountKey), "HmacSHA256"));
String signature = Base64.getEncoder().encodeToString(mac.doFinal(stringToSign.getBytes("UTF-8")));
sasToken = String.format("sv=%s&st=%s&se=%s&sr=b&sp=%s&sig=%s",
signedVersion, signedStart, signedExpiry, permission.toString(), URLEncoder.encode(signature, "UTF-8"));
} catch (Exception e) {
e.printStackTrace();
}
return sasToken;
}
并运行curl命令:
curl -X PUT \
-T ~/Downloads/gfx100s_sample_04_thum-1.jpg \
-H "x-ms-blob-type: BlockBlob" \
-H "x-ms-meta-name: example" \
"<URL-with sas token>"
给了我:
<?xml version="1.0" encoding="utf-8"?><Error><Code>AuthenticationFailed</Code><Message>Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.
RequestId:124d92c4-101e-001e-189f-6157cc000000
Time:2023-03-28T18:02:50.6977457Z</Message><AuthenticationErrorDetail>Signature fields not well formed.</AuthenticationErrorDetail></Error>%
但我从docs开始跟踪签名字段.那么,为什么我仍然收到这个错误?
Update 3:个
BlobServiceClient blobServiceClient = new BlobServiceClientBuilder().connectionString(STORAGE_ACCOUNT_CONNECTION_STRING).buildClient();
BlobContainerClient containerClient = blobServiceClient.getBlobContainerClient(CONTAINER_NAME);
OffsetDateTime expiryTime = OffsetDateTime.now().plusMinutes(30);
BlobClient blobClient = blobServiceClient.getBlobContainerClient(CONTAINER_NAME)
.getBlobClient(request.getFileName());
BlobSasPermission permission = new BlobSasPermission().setReadPermission(true).setWritePermission(true);
BlobServiceSasSignatureValues sasValues = new BlobServiceSasSignatureValues(expiryTime, permission);
String sasToken = blobClient.generateSas(sasValues);
String blobName = containerClient.getBlobClient(request.getFileName()).getBlobName();
log.info(sasToken);
String url = String.format("https://%s.blob.core.windows.net/%s/%s?%s", STORAGE_ACCOUNT_NAME, CONTAINER_NAME, request.getFileName(), sasToken);
GetMediaUploadCredResponse res = GetMediaUploadCredResponse.newBuilder()
.setMediaId(blobName)
.setUploadCredentialUrl(url)
.build();
错误:
Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature.