public async Task <IActionResult> GetMetadata(long id, [FromHeader(Name = HeaderNames.IfNoneMatch)] string ifNoneMatch)
{
var latestVersion = await _objectsStorageReader.GetObjectLatestVersion(id);
if (latestVersion == null)
{
return(NotFound());
}
Response.Headers[HeaderNames.ETag] = $"\"{latestVersion.VersionId}\"";
Response.Headers[HeaderNames.LastModified] = latestVersion.LastModified.ToString("R");
if (!string.IsNullOrEmpty(ifNoneMatch) && ifNoneMatch.Trim('"') == latestVersion.VersionId)
{
return(NotModified());
}
return(Ok());
}
private async Task <string> PutObject(
long id,
string versionId,
AuthorInfo authorInfo,
IEnumerable <IObjectElementDescriptor> currentObjectElements,
IObjectDescriptor objectDescriptor)
{
PreprocessObjectElements(objectDescriptor.Elements);
await VerifyObjectElementsConsistency(id, objectDescriptor.Language, objectDescriptor.Elements);
var metadataForBinaries = await RetrieveMetadataForBinaries(id, currentObjectElements, objectDescriptor.Elements);
await _eventSender.SendAsync(_objectEventsTopic, new ObjectVersionCreatingEvent(id, versionId));
var totalBinariesCount = 0;
PutObjectRequest putRequest;
MetadataCollectionWrapper metadataWrapper;
foreach (var elementDescriptor in objectDescriptor.Elements)
{
var(elementPersistenceValue, binariesCount) = ConvertToPersistenceValue(elementDescriptor.Value, metadataForBinaries);
var elementPersistenceDescriptor = new ObjectElementPersistenceDescriptor(elementDescriptor, elementPersistenceValue);
totalBinariesCount += binariesCount;
putRequest = new PutObjectRequest
{
Key = id.AsS3ObjectKey(elementDescriptor.Id),
BucketName = _bucketName,
ContentType = ContentType.Json,
ContentBody = JsonConvert.SerializeObject(elementPersistenceDescriptor, SerializerSettings.Default),
CannedACL = S3CannedACL.PublicRead
};
metadataWrapper = MetadataCollectionWrapper.For(putRequest.Metadata);
metadataWrapper.Write(MetadataElement.Author, authorInfo.Author);
metadataWrapper.Write(MetadataElement.AuthorLogin, authorInfo.AuthorLogin);
metadataWrapper.Write(MetadataElement.AuthorName, authorInfo.AuthorName);
await _s3Client.PutObjectAsync(putRequest);
}
var objectKey = id.AsS3ObjectKey(Tokens.ObjectPostfix);
var elementVersions = await _objectsStorageReader.GetObjectElementsLatestVersions(id);
var objectPersistenceDescriptor = new ObjectPersistenceDescriptor
{
TemplateId = objectDescriptor.TemplateId,
TemplateVersionId = objectDescriptor.TemplateVersionId,
Language = objectDescriptor.Language,
Properties = objectDescriptor.Properties,
Elements = elementVersions
};
putRequest = new PutObjectRequest
{
Key = objectKey,
BucketName = _bucketName,
ContentType = ContentType.Json,
ContentBody = JsonConvert.SerializeObject(objectPersistenceDescriptor, SerializerSettings.Default),
CannedACL = S3CannedACL.PublicRead
};
metadataWrapper = MetadataCollectionWrapper.For(putRequest.Metadata);
metadataWrapper.Write(MetadataElement.Author, authorInfo.Author);
metadataWrapper.Write(MetadataElement.AuthorLogin, authorInfo.AuthorLogin);
metadataWrapper.Write(MetadataElement.AuthorName, authorInfo.AuthorName);
metadataWrapper.Write(
MetadataElement.ModifiedElements,
string.Join(Tokens.ModifiedElementsDelimiter.ToString(), objectDescriptor.Elements.Select(x => x.TemplateCode)));
await _s3Client.PutObjectAsync(putRequest);
_referencedBinariesMetric.Inc(totalBinariesCount);
var objectLatestVersion = await _objectsStorageReader.GetObjectLatestVersion(id);
return(objectLatestVersion.VersionId);
}