public override async Task <IChasmBlob> ReadObjectAsync(Sha1 objectId, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
(string filePath, string metaPath) = DeriveFileNames(_objectsContainer, objectId);
using (IMemoryOwner <byte> owned = await ReadFileAsync(filePath, cancellationToken)
.ConfigureAwait(false))
{
if (owned == null || owned.Memory.IsEmpty)
{
return(default);
private async Task <bool> ExistsOnCloudAsync(Sha1 objectId, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
requestContext = ChasmRequestContext.Ensure(requestContext);
var opContext = new OperationContext
{
ClientRequestID = requestContext.CorrelationId,
CustomUserAgent = requestContext.CustomUserAgent
};
string blobName = DeriveBlobName(objectId);
CloudBlobContainer objectsContainer = _objectsContainer.Value;
CloudAppendBlob blobRef = objectsContainer.GetAppendBlobReference(blobName);
bool exists = await blobRef.ExistsAsync(default, opContext, cancellationToken)
private async Task <bool> ExistsOnCloudAsync(Sha1 objectId, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
requestContext = ChasmRequestContext.Ensure(requestContext);
var opContext = new OperationContext
{
ClientRequestID = requestContext.CorrelationId,
CustomUserAgent = requestContext.CustomUserAgent
};
CloudTable objectsTable = _objectsTable.Value;
TableOperation op = DataEntity.BuildExistsOperation(objectId);
try
{
TableResult result = await objectsTable.ExecuteAsync(op, default, opContext, cancellationToken)
public override Task <bool> ExistsAsync(Sha1 objectId, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
(string filePath, _) = DeriveFileNames(_objectsContainer, objectId);
string dir = Path.GetDirectoryName(filePath);
if (!Directory.Exists(dir))
{
return(Task.FromResult(false));
}
bool exists = File.Exists(filePath);
return(Task.FromResult(exists));
}
public override async Task <bool> ExistsAsync(Sha1 objectId, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
requestContext = ChasmRequestContext.Ensure(requestContext);
// Try disk repo first
bool exists = await _diskRepo.ExistsAsync(objectId, requestContext, cancellationToken)
.ConfigureAwait(false);
// Else go to cloud
if (!exists)
{
exists = await ExistsOnCloudAsync(objectId, requestContext, cancellationToken)
.ConfigureAwait(false);
}
return(exists);
}
public override Task <IReadOnlyList <WriteResult <Sha1> > > WriteObjectsAsync(IEnumerable <IChasmBlob> blobs, bool forceOverwrite, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
throw new NotImplementedException();
}
public override Task <WriteResult <Sha1> > WriteObjectAsync(Func <Stream, ValueTask> writeAction, ChasmMetadata metadata, bool forceOverwrite, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
throw new NotImplementedException();
}
public override Task <WriteResult <Sha1> > WriteObjectAsync(ReadOnlyMemory <byte> item, ChasmMetadata metadata, bool forceOverwrite, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
throw new NotImplementedException();
}
public override Task <IReadOnlyDictionary <Sha1, IChasmBlob> > ReadObjectBatchAsync(IEnumerable <Sha1> objectIds, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
throw new NotImplementedException();
}
public override Task <IChasmStream> ReadStreamAsync(Sha1 objectId, ChasmRequestContext requestContext = default, CancellationToken cancellationToken = default)
{
throw new NotImplementedException();
}
internal static ChasmConcurrencyException MockBuildConcurrencyException(string name, string branch, Exception innerException, ChasmRequestContext requestContext)
{
return(BuildConcurrencyException(branch, name, innerException, requestContext));
}
private static async Task TestRepository(IChasmRepository repository)
{
var g = Guid.NewGuid();
var cx = new ChasmRequestContext {
CorrelationId = Guid.NewGuid().ToString("D")
};
byte[] buffer = g.ToByteArray();
Sha1 sha = s_hasher.HashData(buffer);
// Unknown SHA
Sha1 usha1 = s_hasher.HashData(Guid.NewGuid().ToByteArray());
Sha1 usha2 = s_hasher.HashData(Guid.NewGuid().ToByteArray());
// Blob
var metadata = new ChasmMetadata("application/json", "file123.txt");
Sha1 sha2 = await repository.WriteObjectAsync(new ReadOnlyMemory <byte>(buffer), metadata, false, cx, default);
Assert.Equal(sha, sha2);
IChasmBlob rdata = await repository.ReadObjectAsync(sha, default);
Assert.True(rdata != null);
Assert.Equal(16, rdata.Content.Length);
Assert.Equal(g, new Guid(rdata.Content.ToArray()));
Assert.Equal("application/json", rdata.Metadata.ContentType);
Assert.Equal("file123.txt", rdata.Metadata.Filename);
IChasmBlob urdata = await repository.ReadObjectAsync(usha1, default);
Assert.False(urdata != null);
//
metadata = new ChasmMetadata("application/text", null);
sha2 = await repository.WriteObjectAsync(buffer, metadata, true, cx, default);
Assert.Equal(sha, sha2);
IChasmBlob cnt2 = await repository.ReadObjectAsync(sha2, default);
Assert.Equal(buffer, cnt2.Content.ToArray());
Assert.Equal("application/text", cnt2.Metadata.ContentType);
Assert.Null(cnt2.Metadata.Filename);
using (IChasmStream stream2 = await repository.ReadStreamAsync(sha2, cx, default))
using (var ms = new MemoryStream())
{
stream2.Content.CopyTo(ms);
Assert.Equal(buffer, ms.ToArray());
}
using (Stream stream2 = new MemoryStream(buffer))
{
sha2 = await repository.WriteObjectAsync(stream2, null, true, cx, default);
}
Assert.Equal(sha, sha2);
using (IChasmStream stream2 = await repository.ReadStreamAsync(sha2, cx, default))
using (var ms = new MemoryStream())
{
stream2.Content.CopyTo(ms);
Assert.Equal(buffer, ms.ToArray());
}
// Tree
var tree = new TreeNodeMap(
new TreeNode("firstItem", NodeKind.Blob, sha),
new TreeNode("secondItem", NodeKind.Blob, sha)
);
TreeId treeId = await repository.WriteTreeAsync(tree, cx, default);
TreeNodeMap?rtree = await repository.ReadTreeAsync(treeId, cx, default);
Assert.True(rtree.HasValue);
Assert.Equal(tree, rtree.Value);
TreeNodeMap?urtree = await repository.ReadTreeAsync(new TreeId(usha1), cx, default);
Assert.False(urtree.HasValue);
}