/// <summary>
/// Implements the Exists method. The attributes are updated immediately.
/// </summary>
/// <param name="options">An object that specifies any additional options for the request.</param>
/// <returns>A <see cref="RESTCommand"/> that checks existence.</returns>
internal static RESTCommand <bool> ExistsImpl(ICloudBlob blob, BlobAttributes attributes, BlobRequestOptions options)
{
RESTCommand <bool> getCmd = new RESTCommand <bool>(blob.ServiceClient.Credentials, attributes.Uri);
getCmd.ApplyRequestOptions(options);
getCmd.Handler = blob.ServiceClient.AuthenticationHandler;
getCmd.BuildClient = HttpClientFactory.BuildHttpClient;
getCmd.BuildRequest = (cmd, cnt, ctx) => BlobHttpRequestMessageFactory.GetProperties(cmd.Uri, cmd.ServerTimeoutInSeconds, attributes.SnapshotTime, null /* accessCondition */, cnt, ctx);
getCmd.PreProcessResponse = (cmd, resp, ex, ctx) =>
{
if (resp.StatusCode == HttpStatusCode.NotFound)
{
return(false);
}
if (resp.StatusCode == HttpStatusCode.PreconditionFailed)
{
return(true);
}
return(HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, true, cmd, ex, ctx));
};
return(getCmd);
}
/// <summary>
/// Implements the FetchAttributes method. The attributes are updated immediately.
/// </summary>
/// <param name="blobUri">The URI of the blob.</param>
/// <param name="accessCondition">An <see cref="AccessCondition"/> object that represents the access conditions for the blob. If <c>null</c>, no condition is used.</param>
/// <param name="options">A <see cref="BlobRequestOptions"/> object that specifies any additional options for the request.</param>
/// <returns>A <see cref="RESTCommand"/> that fetches the attributes.</returns>
private RESTCommand <ICloudBlob> GetBlobReferenceImpl(Uri blobUri, AccessCondition accessCondition, BlobRequestOptions options)
{
RESTCommand <ICloudBlob> getCmd = new RESTCommand <ICloudBlob>(this.Credentials, blobUri);
getCmd.ApplyRequestOptions(options);
getCmd.Handler = this.AuthenticationHandler;
getCmd.BuildClient = HttpClientFactory.BuildHttpClient;
getCmd.BuildRequest = (cmd, cnt, ctx) => BlobHttpRequestMessageFactory.GetProperties(cmd.Uri, cmd.ServerTimeoutInSeconds, null /* snapshot */, accessCondition, cnt, ctx);
getCmd.PreProcessResponse = (cmd, resp, ex, ctx) =>
{
HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, null /* retVal */, cmd, ex, ctx);
BlobAttributes attributes = new BlobAttributes();
attributes.Uri = blobUri;
CloudBlobSharedImpl.UpdateAfterFetchAttributes(attributes, resp, false);
switch (attributes.Properties.BlobType)
{
case BlobType.BlockBlob:
return(new CloudBlockBlob(attributes, this));
case BlobType.PageBlob:
return(new CloudPageBlob(attributes, this));
default:
throw new InvalidOperationException();
}
};
return(getCmd);
}
/// <summary>
/// Implements the FetchAttributes method. The attributes are updated immediately.
/// </summary>
/// <param name="accessCondition">An object that represents the access conditions for the blob. If null, no condition is used.</param>
/// <param name="options">An object that specifies any additional options for the request.</param>
/// <returns>A <see cref="RESTCommand"/> that fetches the attributes.</returns>
internal static RESTCommand <NullType> FetchAttributesImpl(ICloudBlob blob, BlobAttributes attributes, AccessCondition accessCondition, BlobRequestOptions options)
{
RESTCommand <NullType> getCmd = new RESTCommand <NullType>(blob.ServiceClient.Credentials, attributes.Uri);
getCmd.ApplyRequestOptions(options);
getCmd.Handler = blob.ServiceClient.AuthenticationHandler;
getCmd.BuildClient = HttpClientFactory.BuildHttpClient;
getCmd.BuildRequest = (cmd, cnt, ctx) => BlobHttpRequestMessageFactory.GetProperties(cmd.Uri, cmd.ServerTimeoutInSeconds, attributes.SnapshotTime, accessCondition, cnt, ctx);
getCmd.PreProcessResponse = (cmd, resp, ex, ctx) =>
{
HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, NullType.Value, cmd, ex, ctx);
CloudBlobSharedImpl.UpdateAfterFetchAttributes(attributes, resp, false);
return(NullType.Value);
};
return(getCmd);
}
/// <summary>
/// Implements the FetchAttributes method. The attributes are updated immediately.
/// </summary>
/// <param name="blobUri">The URI of the blob.</param>
/// <param name="accessCondition">An <see cref="AccessCondition"/> object that represents the access conditions for the blob. If <c>null</c>, no condition is used.</param>
/// <param name="options">A <see cref="BlobRequestOptions"/> object that specifies any additional options for the request.</param>
/// <returns>A <see cref="RESTCommand"/> that fetches the attributes.</returns>
private RESTCommand <ICloudBlob> GetBlobReferenceImpl(Uri blobUri, AccessCondition accessCondition, BlobRequestOptions options)
{
// If the blob Uri contains SAS credentials, we need to use those
// credentials instead of this service client's stored credentials.
StorageCredentials parsedCredentials;
DateTimeOffset? parsedSnapshot;
blobUri = NavigationHelper.ParseBlobQueryAndVerify(blobUri, out parsedCredentials, out parsedSnapshot);
CloudBlobClient client = parsedCredentials != null ? new CloudBlobClient(this.BaseUri, parsedCredentials) : this;
RESTCommand <ICloudBlob> getCmd = new RESTCommand <ICloudBlob>(client.Credentials, blobUri);
getCmd.ApplyRequestOptions(options);
getCmd.Handler = client.AuthenticationHandler;
getCmd.BuildClient = HttpClientFactory.BuildHttpClient;
getCmd.BuildRequest = (cmd, cnt, ctx) => BlobHttpRequestMessageFactory.GetProperties(cmd.Uri, cmd.ServerTimeoutInSeconds, parsedSnapshot, accessCondition, cnt, ctx);
getCmd.PreProcessResponse = (cmd, resp, ex, ctx) =>
{
HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, null /* retVal */, cmd, ex, ctx);
BlobAttributes attributes = new BlobAttributes()
{
Uri = blobUri,
SnapshotTime = parsedSnapshot,
};
CloudBlobSharedImpl.UpdateAfterFetchAttributes(attributes, resp, false);
switch (attributes.Properties.BlobType)
{
case BlobType.BlockBlob:
return(new CloudBlockBlob(attributes, client));
case BlobType.PageBlob:
return(new CloudPageBlob(attributes, client));
default:
throw new InvalidOperationException();
}
};
return(getCmd);
}
/// <summary>
/// Implements the FetchAttributes method. The attributes are updated immediately.
/// </summary>
/// <param name="blobUri">The URI of the blob.</param>
/// <param name="accessCondition">An <see cref="AccessCondition"/> object that represents the access conditions for the blob. If <c>null</c>, no condition is used.</param>
/// <param name="options">A <see cref="BlobRequestOptions"/> object that specifies additional options for the request.</param>
/// <returns>A <see cref="RESTCommand"/> that fetches the attributes.</returns>
private RESTCommand <ICloudBlob> GetBlobReferenceImpl(StorageUri blobUri, AccessCondition accessCondition, BlobRequestOptions options)
{
// If the blob Uri contains SAS credentials, we need to use those
// credentials instead of this service client's stored credentials.
StorageCredentials parsedCredentials;
DateTimeOffset? parsedSnapshot;
blobUri = NavigationHelper.ParseBlobQueryAndVerify(blobUri, out parsedCredentials, out parsedSnapshot);
CloudBlobClient client = parsedCredentials != null ? new CloudBlobClient(this.StorageUri, parsedCredentials) : this;
RESTCommand <ICloudBlob> getCmd = new RESTCommand <ICloudBlob>(client.Credentials, blobUri, this.HttpClient);
options.ApplyToStorageCommand(getCmd);
getCmd.CommandLocationMode = CommandLocationMode.PrimaryOrSecondary;
getCmd.BuildRequest = (cmd, uri, builder, cnt, serverTimeout, ctx) => BlobHttpRequestMessageFactory.GetProperties(uri, serverTimeout,
parsedSnapshot, accessCondition, cnt, ctx, client.GetCanonicalizer(), client.Credentials, options);
getCmd.PreProcessResponse = (cmd, resp, ex, ctx) =>
{
HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, null /* retVal */, cmd, ex);
BlobAttributes attributes = new BlobAttributes()
{
StorageUri = blobUri,
SnapshotTime = parsedSnapshot,
};
CloudBlob.UpdateAfterFetchAttributes(attributes, resp);
switch (attributes.Properties.BlobType)
{
case BlobType.BlockBlob:
return(new CloudBlockBlob(attributes, client));
case BlobType.PageBlob:
return(new CloudPageBlob(attributes, client));
case BlobType.AppendBlob:
return(new CloudAppendBlob(attributes, client));
default:
throw new InvalidOperationException();
}
};
return(getCmd);
}
/// <summary>
/// Implements the Exists method. The attributes are updated immediately.
/// </summary>
/// <param name="blob">The blob object that is calling this method.</param>
/// <param name="attributes">The blob's attributes.</param>
/// <param name="options">An object that specifies additional options for the request.</param>
/// <param name="primaryOnly">If <c>true</c>, the command will be executed against the primary location.</param>
/// <returns>A <see cref="RESTCommand"/> that checks existence.</returns>
internal static RESTCommand <bool> ExistsImpl(ICloudBlob blob, BlobAttributes attributes, BlobRequestOptions options, bool primaryOnly)
{
RESTCommand <bool> getCmd = new RESTCommand <bool>(blob.ServiceClient.Credentials, attributes.StorageUri);
options.ApplyToStorageCommand(getCmd);
getCmd.CommandLocationMode = primaryOnly ? CommandLocationMode.PrimaryOnly : CommandLocationMode.PrimaryOrSecondary;
getCmd.Handler = blob.ServiceClient.AuthenticationHandler;
getCmd.BuildClient = HttpClientFactory.BuildHttpClient;
getCmd.BuildRequest = (cmd, uri, builder, cnt, serverTimeout, ctx) => BlobHttpRequestMessageFactory.GetProperties(uri, serverTimeout, attributes.SnapshotTime, null /* accessCondition */, cnt, ctx);
getCmd.PreProcessResponse = (cmd, resp, ex, ctx) =>
{
if (resp.StatusCode == HttpStatusCode.NotFound)
{
return(false);
}
HttpResponseParsers.ProcessExpectedStatusCodeNoException(HttpStatusCode.OK, resp, true, cmd, ex);
CloudBlobSharedImpl.UpdateAfterFetchAttributes(attributes, resp, false);
return(true);
};
return(getCmd);
}