public async Task PublishEventAsync(string hookEventType, object eventContent)
{
using (_tracer.Step("WebHooksManager.PublishEventAsync: " + hookEventType))
{
string jsonString = JsonConvert.SerializeObject(eventContent, JsonSerializerSettings);
await _hooksLock.LockOperationAsync(async() =>
{
await PublishToHooksAsync(jsonString, hookEventType);
}, "Publishing WebHook event", LockTimeout);
}
}
public static async Task LockHttpOperationAsync(this IOperationLock lockObj, Func <Task> action, string operationName)
{
try
{
await lockObj.LockOperationAsync(action, operationName, TimeSpan.Zero);
}
catch (LockOperationException ex)
{
var response = new HttpResponseMessage(HttpStatusCode.Conflict);
response.Content = new StringContent(ex.Message);
throw new HttpResponseException(response);
}
}
public async Task <FetchDeploymentRequestResult> FetchDeploy(
DeploymentInfoBase deployInfo,
bool asyncRequested,
Uri requestUri,
string targetBranch)
{
// If Scm is not enabled, we will reject all but one payload for GenericHandler
// This is to block the unintended CI with Scm providers like GitHub
// Since Generic payload can only be done by user action, we loosely allow
// that and assume users know what they are doing. Same applies to git
// push/clone endpoint and zip deployment.
if (!(_settings.IsScmEnabled() || deployInfo.AllowDeploymentWhileScmDisabled))
{
return(FetchDeploymentRequestResult.ForbiddenScmDisabled);
}
// Else if this app is configured with a url in WEBSITE_USE_ZIP, then fail the deployment
// since this is a RunFromZip site and the deployment has no chance of succeeding.
else if (_settings.RunFromRemoteZip())
{
return(FetchDeploymentRequestResult.ConflictRunFromRemoteZipConfigured);
}
// for CI payload, we will return Accepted and do the task in the BG
// if isAsync is defined, we will return Accepted and do the task in the BG
// since autoSwap relies on the response header, deployment has to be synchronously.
bool isBackground = asyncRequested || deployInfo.IsContinuous;
if (isBackground)
{
using (_tracer.Step("Start deployment in the background"))
{
var waitForTempDeploymentCreation = asyncRequested;
var successfullyRequested = await PerformBackgroundDeployment(
deployInfo,
_environment,
_settings,
_tracer.TraceLevel,
requestUri,
waitForTempDeploymentCreation);
return(successfullyRequested
? FetchDeploymentRequestResult.RunningAynschronously
: FetchDeploymentRequestResult.ConflictDeploymentInProgress);
}
}
_tracer.Trace("Attempting to fetch target branch {0}", targetBranch);
try
{
return(await _deploymentLock.LockOperationAsync(async() =>
{
if (PostDeploymentHelper.IsAutoSwapOngoing())
{
return FetchDeploymentRequestResult.ConflictAutoSwapOngoing;
}
await PerformDeployment(deployInfo);
return FetchDeploymentRequestResult.RanSynchronously;
}, "Performing continuous deployment", TimeSpan.Zero));
}
catch (LockOperationException)
{
if (deployInfo.AllowDeferredDeployment)
{
// Create a marker file that indicates if there's another deployment to pull
// because there was a deployment in progress.
using (_tracer.Step("Update pending deployment marker file"))
{
// REVIEW: This makes the assumption that the repository url is the same.
// If it isn't the result would be buggy either way.
FileSystemHelpers.SetLastWriteTimeUtc(_markerFilePath, DateTime.UtcNow);
}
return(FetchDeploymentRequestResult.Pending);
}
else
{
return(FetchDeploymentRequestResult.ConflictDeploymentInProgress);
}
}
}
public override async Task ProcessRequestAsync(HttpContext context)
{
using (_tracer.Step("FetchHandler"))
{
// Redirect GET /deploy requests to the Kudu root for convenience when using URL from Azure portal
if (String.Equals(context.Request.HttpMethod, "GET", StringComparison.OrdinalIgnoreCase))
{
context.Response.Redirect("~/");
context.ApplicationInstance.CompleteRequest();
return;
}
if (!String.Equals(context.Request.HttpMethod, "POST", StringComparison.OrdinalIgnoreCase))
{
context.Response.StatusCode = (int)HttpStatusCode.NotFound;
context.ApplicationInstance.CompleteRequest();
return;
}
context.Response.TrySkipIisCustomErrors = true;
DeploymentInfo deployInfo = null;
// We are going to assume that the branch details are already set by the time it gets here. This is particularly important in the mercurial case,
// since Settings hardcodes the default value for Branch to be "master". Consequently, Kudu will NoOp requests for Mercurial commits.
string targetBranch = _settings.GetBranch();
try
{
var request = new HttpRequestWrapper(context.Request);
JObject payload = GetPayload(request);
DeployAction action = GetRepositoryInfo(request, payload, targetBranch, out deployInfo);
if (action == DeployAction.NoOp)
{
_tracer.Trace("No-op for deployment.");
return;
}
// If Scm is not enabled, we will reject all but one payload for GenericHandler
// This is to block the unintended CI with Scm providers like GitHub
// Since Generic payload can only be done by user action, we loosely allow
// that and assume users know what they are doing. Same applies to git
// push/clone endpoint.
if (!_settings.IsScmEnabled() && !(deployInfo.Handler is GenericHandler || deployInfo.Handler is DropboxHandler))
{
context.Response.StatusCode = (int)HttpStatusCode.Forbidden;
context.ApplicationInstance.CompleteRequest();
_tracer.Trace("Scm is not enabled, reject all requests.");
return;
}
}
catch (FormatException ex)
{
_tracer.TraceError(ex);
context.Response.StatusCode = 400;
context.Response.Write(ex.Message);
context.ApplicationInstance.CompleteRequest();
return;
}
// for CI payload, we will return Accepted and do the task in the BG
// if isAsync is defined, we will return Accepted and do the task in the BG
// since autoSwap relies on the response header, deployment has to be synchronously.
bool isAsync = String.Equals(context.Request.QueryString["isAsync"], "true", StringComparison.OrdinalIgnoreCase);
bool isBackground = isAsync || deployInfo.IsContinuous;
if (isBackground)
{
using (_tracer.Step("Start deployment in the background"))
{
var waitForTempDeploymentCreation = isAsync;
await PerformBackgroundDeployment(
deployInfo,
_environment,
_settings,
_tracer.TraceLevel,
UriHelper.GetRequestUri(context.Request),
waitForTempDeploymentCreation);
}
// to avoid regression, only set location header if isAsync
if (isAsync)
{
// latest deployment keyword reserved to poll till deployment done
context.Response.Headers["Location"] = new Uri(UriHelper.GetRequestUri(context.Request),
String.Format("/api/deployments/{0}?deployer={1}&time={2}", Constants.LatestDeployment, deployInfo.Deployer, DateTime.UtcNow.ToString("yyy-MM-dd_HH-mm-ssZ"))).ToString();
}
context.Response.StatusCode = (int)HttpStatusCode.Accepted;
context.ApplicationInstance.CompleteRequest();
return;
}
_tracer.Trace("Attempting to fetch target branch {0}", targetBranch);
try
{
await _deploymentLock.LockOperationAsync(async() =>
{
if (PostDeploymentHelper.IsAutoSwapOngoing())
{
context.Response.StatusCode = (int)HttpStatusCode.Conflict;
context.Response.Write(Resources.Error_AutoSwapDeploymentOngoing);
context.ApplicationInstance.CompleteRequest();
return;
}
await PerformDeployment(deployInfo);
}, "Performing continuous deployment", TimeSpan.Zero);
}
catch (LockOperationException)
{
// Create a marker file that indicates if there's another deployment to pull
// because there was a deployment in progress.
using (_tracer.Step("Update pending deployment marker file"))
{
// REVIEW: This makes the assumption that the repository url is the same.
// If it isn't the result would be buggy either way.
FileSystemHelpers.SetLastWriteTimeUtc(_markerFilePath, DateTime.UtcNow);
}
// Return a http 202: the request has been accepted for processing, but the processing has not been completed.
context.Response.StatusCode = (int)HttpStatusCode.Accepted;
context.ApplicationInstance.CompleteRequest();
}
}
}
