public HttpResponseMessage GetDeployResults()
{
HttpResponseMessage response;
EntityTagHeaderValue currentEtag = null;
DeploymentsCacheItem cachedDeployments = _cachedDeployments;
using (_tracer.Step("DeploymentService.GetCurrentEtag"))
{
currentEtag = GetCurrentEtag(Request);
_tracer.Trace("Current Etag: {0}, Cached Etag: {1}", currentEtag, cachedDeployments.Etag);
}
if (EtagEquals(Request, currentEtag))
{
response = Request.CreateResponse(HttpStatusCode.NotModified);
}
else
{
using (_tracer.Step("DeploymentService.GetDeployResults"))
{
if (!currentEtag.Equals(cachedDeployments.Etag))
{
cachedDeployments = new DeploymentsCacheItem
{
Results = GetResults(Request).ToList(),
Etag = currentEtag
};
_cachedDeployments = cachedDeployments;
}
response = Request.CreateResponse(HttpStatusCode.OK, ArmUtils.AddEnvelopeOnArmRequest(cachedDeployments.Results, Request));
}
}
// return etag
response.Headers.ETag = currentEtag;
return(response);
}
public void Equals_UseSameAndDifferentETags_EqualOrNotEqualNoExceptions()
{
EntityTagHeaderValue etag1 = new EntityTagHeaderValue("\"tag\"");
EntityTagHeaderValue etag2 = new EntityTagHeaderValue("\"TAG\"");
EntityTagHeaderValue etag3 = new EntityTagHeaderValue("\"tag\"", true);
EntityTagHeaderValue etag4 = new EntityTagHeaderValue("\"tag1\"");
EntityTagHeaderValue etag5 = new EntityTagHeaderValue("\"tag\"");
EntityTagHeaderValue etag6 = EntityTagHeaderValue.Any;
Assert.False(etag1.Equals(etag2));
Assert.False(etag2.Equals(etag1));
Assert.False(etag1.Equals(null));
Assert.False(etag1.Equals(etag3));
Assert.False(etag3.Equals(etag1));
Assert.False(etag1.Equals(etag4));
Assert.False(etag1.Equals(etag6));
Assert.True(etag1.Equals(etag5));
}
private bool TryGetCachedLatestDeployment(EntityTagHeaderValue latestEtag, out HttpResponseMessage cachedResponse)
{
cachedResponse = null;
var cachedLatestDeployment = _cachedLatestDeployment;
if (latestEtag != null &&
cachedLatestDeployment != null &&
!cachedLatestDeployment.Expired &&
latestEtag.Equals(cachedLatestDeployment.Etag) &&
(ArmUtils.IsAzureResourceManagerUserAgent(Request) || ArmUtils.IsVSTSDevOpsUserAgent(Request)))
{
var result = cachedLatestDeployment.Result;
switch (result.Status)
{
case DeployStatus.Building:
case DeployStatus.Deploying:
case DeployStatus.Pending:
cachedResponse = Request.CreateResponse(HttpStatusCode.Accepted, ArmUtils.AddEnvelopeOnArmRequest(result, Request));
cachedResponse.Headers.Location = GetResponseLocation(Request);
cachedResponse.Headers.RetryAfter = new RetryConditionHeaderValue(TimeSpan.FromSeconds(ScmHostingConfigurations.ArmRetryAfterSeconds));
break;
case DeployStatus.Failed:
case DeployStatus.Success:
cachedResponse = Request.CreateResponse(HttpStatusCode.OK, ArmUtils.AddEnvelopeOnArmRequest(result, Request));
break;
default:
cachedResponse = null;
break;
}
}
return(cachedResponse != null);
}
public static ETag GetETag(this HttpRequestMessage request, EntityTagHeaderValue entityTagHeaderValue)
{
if (request == null)
{
throw Error.ArgumentNull("request");
}
if (entityTagHeaderValue != null)
{
if (entityTagHeaderValue.Equals(EntityTagHeaderValue.Any))
{
return(new ETag {
IsAny = true
});
}
HttpConfiguration configuration = request.GetConfiguration();
if (configuration == null)
{
throw Error.InvalidOperation(SRResources.RequestMustContainConfiguration);
}
// get the etag handler, and parse the etag
IDictionary <string, object> properties =
configuration.GetETagHandler().ParseETag(entityTagHeaderValue) ?? new Dictionary <string, object>();
IList <object> parsedETagValues = properties.Select(property => property.Value).AsList();
// get property names from request
ODataPath odataPath = request.ODataProperties().Path;
IEdmModel model = request.ODataProperties().Model;
IEdmNavigationSource source = odataPath.NavigationSource;
if (model != null && source != null)
{
IList <IEdmStructuralProperty> concurrencyProperties = model.GetConcurrencyProperties(source).ToList();
IList <string> concurrencyPropertyNames = concurrencyProperties.OrderBy(c => c.Name).Select(c => c.Name).AsList();
ETag etag = new ETag();
if (parsedETagValues.Count != concurrencyPropertyNames.Count)
{
etag.IsWellFormed = false;
}
IEnumerable <KeyValuePair <string, object> > nameValues = concurrencyPropertyNames.Zip(
parsedETagValues,
(name, value) => new KeyValuePair <string, object>(name, value));
foreach (var nameValue in nameValues)
{
IEdmStructuralProperty property = concurrencyProperties.SingleOrDefault(e => e.Name == nameValue.Key);
Contract.Assert(property != null);
Type clrType = EdmLibHelpers.GetClrType(property.Type, model);
Contract.Assert(clrType != null);
if (nameValue.Value != null)
{
Type valueType = nameValue.Value.GetType();
etag[nameValue.Key] = valueType != clrType
? Convert.ChangeType(nameValue.Value, clrType, CultureInfo.InvariantCulture)
: nameValue.Value;
}
else
{
etag[nameValue.Key] = nameValue.Value;
}
}
return(etag);
}
}
return(null);
}
/// <summary>
/// Indicates whether this is a If-None-Match request with a matching etag.
/// </summary>
protected bool IsIfNoneMatchRequest(EntityTagHeaderValue currentEtag)
{
return(currentEtag != null && Request.Headers.IfNoneMatch != null &&
Request.Headers.IfNoneMatch.Any(entityTag => currentEtag.Equals(entityTag)));
}
private static bool EtagEquals(HttpRequestMessage request, EntityTagHeaderValue currentEtag)
{
return(request.Headers.IfNoneMatch != null &&
request.Headers.IfNoneMatch.Any(etag => currentEtag.Equals(etag)));
}
protected override Task <HttpResponseMessage> CreateFileDeleteResponse(FileInfoBase info)
{
// Existing resources require an etag to be updated.
if (Request.Headers.IfMatch == null)
{
HttpResponseMessage conflictDirectoryResponse = Request.CreateErrorResponse(
HttpStatusCode.PreconditionFailed, Resources.VfsController_MissingIfMatch);
return(Task.FromResult(conflictDirectoryResponse));
}
// Get current etag
EntityTagHeaderValue currentEtag = CreateEntityTag(info);
bool isMatch = Request.Headers.IfMatch.Any(etag => etag == EntityTagHeaderValue.Any || currentEtag.Equals(etag));
if (!isMatch)
{
HttpResponseMessage conflictFileResponse = Request.CreateErrorResponse(
HttpStatusCode.PreconditionFailed, Resources.VfsController_EtagMismatch);
conflictFileResponse.Headers.ETag = currentEtag;
return(Task.FromResult(conflictFileResponse));
}
return(base.CreateFileDeleteResponse(info));
}
protected override async Task <HttpResponseMessage> CreateItemPutResponse(FileSystemInfoBase info, string localFilePath, bool itemExists)
{
// Check that we have a matching conditional If-Match request for existing resources
if (itemExists)
{
// Get current etag
EntityTagHeaderValue currentEtag = CreateEntityTag(info);
// Existing resources require an etag to be updated.
if (Request.Headers.IfMatch == null)
{
HttpResponseMessage missingIfMatchResponse = Request.CreateErrorResponse(
HttpStatusCode.PreconditionFailed, Resources.VfsController_MissingIfMatch);
return(missingIfMatchResponse);
}
bool isMatch = false;
foreach (EntityTagHeaderValue etag in Request.Headers.IfMatch)
{
if (currentEtag.Equals(etag) || etag == EntityTagHeaderValue.Any)
{
isMatch = true;
break;
}
}
if (!isMatch)
{
HttpResponseMessage conflictFileResponse = Request.CreateErrorResponse(
HttpStatusCode.PreconditionFailed, Resources.VfsController_EtagMismatch);
conflictFileResponse.Headers.ETag = currentEtag;
return(conflictFileResponse);
}
}
// Save file
try
{
using (Stream fileStream = GetFileWriteStream(localFilePath, fileExists: itemExists))
{
try
{
await Request.Content.CopyToAsync(fileStream);
}
catch (Exception ex)
{
Tracer.TraceError(ex);
HttpResponseMessage conflictResponse = Request.CreateErrorResponse(
HttpStatusCode.Conflict,
RS.Format(Resources.VfsController_WriteConflict, localFilePath, ex.Message),
ex);
return(conflictResponse);
}
}
// Return either 204 No Content or 201 Created response
HttpResponseMessage successFileResponse =
Request.CreateResponse(itemExists ? HttpStatusCode.NoContent : HttpStatusCode.Created);
// Set updated etag for the file
info.Refresh();
successFileResponse.Headers.ETag = CreateEntityTag(info);
return(successFileResponse);
}
catch (Exception ex)
{
Tracer.TraceError(ex);
HttpResponseMessage errorResponse =
Request.CreateErrorResponse(HttpStatusCode.Conflict,
RS.Format(Resources.VfsController_WriteConflict, localFilePath, ex.Message), ex);
return(errorResponse);
}
}
private void ComputeRange()
{
// 14.35 Range
// http://tools.ietf.org/html/draft-ietf-httpbis-p5-range-24
// A server MUST ignore a Range header field received with a request method other
// than GET.
if (!_isGet)
{
return;
}
var rawRangeHeader = _request.Headers[HeaderNames.Range];
if (StringValues.IsNullOrEmpty(rawRangeHeader))
{
return;
}
// Perf: Check for a single entry before parsing it
if (rawRangeHeader.Count > 1 || rawRangeHeader[0].IndexOf(',') >= 0)
{
// The spec allows for multiple ranges but we choose not to support them because the client may request
// very strange ranges (e.g. each byte separately, overlapping ranges, etc.) that could negatively
// impact the server. Ignore the header and serve the response normally.
_logger.LogMultipleFileRanges(rawRangeHeader.ToString());
return;
}
var rangeHeader = _requestHeaders.Range;
if (rangeHeader == null)
{
// Invalid
return;
}
// Already verified above
Debug.Assert(rangeHeader.Ranges.Count == 1);
// 14.27 If-Range
var ifRangeHeader = _requestHeaders.IfRange;
if (ifRangeHeader != null)
{
// If the validator given in the If-Range header field matches the
// current validator for the selected representation of the target
// resource, then the server SHOULD process the Range header field as
// requested. If the validator does not match, the server MUST ignore
// the Range header field.
bool ignoreRangeHeader = false;
if (ifRangeHeader.LastModified.HasValue)
{
if (_lastModified > ifRangeHeader.LastModified)
{
ignoreRangeHeader = true;
}
}
else if (ifRangeHeader.EntityTag != null && !_etag.Equals(ifRangeHeader.EntityTag))
{
ignoreRangeHeader = true;
}
if (ignoreRangeHeader)
{
return;
}
}
_ranges = RangeHelpers.NormalizeRanges(rangeHeader.Ranges, _length);
}
protected override Task <IActionResult> CreateFileDeleteResponse(FileInfoBase info)
{
// Existing resources require an etag to be updated.
var requestHeaders = Request.GetTypedHeaders();
// CORE TODO double check semantics of what you get from GetTypedHeaders() (empty strings vs null, etc.)
if (requestHeaders.IfMatch == null)
{
return(Task.FromResult((IActionResult)StatusCode(StatusCodes.Status412PreconditionFailed, Resources.VfsController_MissingIfMatch)));
}
// Get current etag
EntityTagHeaderValue currentEtag = CreateEntityTag(info);
bool isMatch = requestHeaders.IfMatch.Any(etag => etag == EntityTagHeaderValue.Any || currentEtag.Equals(etag));
if (!isMatch)
{
Response.GetTypedHeaders().ETag = currentEtag;
return(Task.FromResult((IActionResult)StatusCode(StatusCodes.Status409Conflict, Resources.VfsController_EtagMismatch)));
}
return(base.CreateFileDeleteResponse(info));
}
protected override Task <HttpResponseMessage> CreateItemPutResponse(FileSystemInfo info, string localFilePath, bool itemExists)
{
// Check that we have a matching conditional If-Match request for existing resources
if (itemExists)
{
// Get current etag
EntityTagHeaderValue currentEtag = GetCurrentEtag(info);
// Existing resources require an etag to be updated.
if (Request.Headers.IfMatch == null)
{
HttpResponseMessage missingIfMatchResponse = Request.CreateErrorResponse(
HttpStatusCode.PreconditionFailed, Resources.VfsController_MissingIfMatch);
return(Task.FromResult(missingIfMatchResponse));
}
bool isMatch = false;
foreach (EntityTagHeaderValue etag in Request.Headers.IfMatch)
{
if (currentEtag.Equals(etag) || etag == EntityTagHeaderValue.Any)
{
isMatch = true;
break;
}
}
if (!isMatch)
{
HttpResponseMessage conflictFileResponse = Request.CreateErrorResponse(
HttpStatusCode.PreconditionFailed, Resources.VfsController_EtagMismatch);
conflictFileResponse.Headers.ETag = currentEtag;
return(Task.FromResult(conflictFileResponse));
}
}
// Save file
Stream fileStream = null;
try
{
fileStream = GetFileWriteStream(localFilePath, fileExists: itemExists);
return(Request.Content.CopyToAsync(fileStream)
.Then(() =>
{
// Successfully saved the file
fileStream.Close();
fileStream = null;
// Return either 204 No Content or 201 Created response
HttpResponseMessage successFileResponse =
Request.CreateResponse(itemExists ? HttpStatusCode.NoContent : HttpStatusCode.Created);
// Set updated etag for the file
successFileResponse.Headers.ETag = GetUpdatedEtag(localFilePath);
return successFileResponse;
})
.Catch((catchInfo) =>
{
Tracer.TraceError(catchInfo.Exception);
HttpResponseMessage conflictResponse = Request.CreateErrorResponse(
HttpStatusCode.Conflict,
RS.Format(Resources.VfsController_WriteConflict, localFilePath),
catchInfo.Exception);
if (fileStream != null)
{
fileStream.Close();
}
return catchInfo.Handled(conflictResponse);
}));
}
catch (Exception e)
{
Tracer.TraceError(e);
HttpResponseMessage errorResponse =
Request.CreateErrorResponse(HttpStatusCode.Conflict,
RS.Format(Resources.VfsController_WriteConflict, localFilePath), e);
if (fileStream != null)
{
fileStream.Close();
}
return(Task.FromResult(errorResponse));
}
}
