/// <summary>
/// Remove all site workers after cloudbuilt content is uploaded
/// </summary>
/// <param name="websiteHostname">WEBSITE_HOSTNAME</param>
/// <param name="sitename">WEBSITE_SITE_NAME</param>
/// <exception cref="ArgumentException">Thrown when RemoveAllWorkers url is malformed.</exception>
/// <exception cref="HttpRequestException">Thrown when request to RemoveAllWorkers is not OK.</exception>
public static async Task RemoveAllWorkersAsync(string websiteHostname, string sitename)
{
// Generate URL encoded auth token
string websiteAuthEncryptionKey = System.Environment.GetEnvironmentVariable(SettingsKeys.AuthEncryptionKey);
DateTime expiry = DateTime.UtcNow.AddMinutes(5);
string authToken = SimpleWebTokenHelper.CreateToken(expiry, websiteAuthEncryptionKey.ToKeyBytes());
string authTokenEncoded = HttpUtility.UrlEncode(authToken);
// Generate RemoveAllWorker request URI
string baseUrl = $"http://{websiteHostname}/operations/removeworker/{sitename}/allStandard?token={authTokenEncoded}";
Uri baseUri = null;
if (!Uri.TryCreate(baseUrl, UriKind.Absolute, out baseUri))
{
throw new ArgumentException($"Malformed URI is used in RemoveAllWorkers");
}
Trace(TraceEventType.Information, "Calling RemoveAllWorkers to refresh the function app");
// Initiate GET request
using (var client = HttpClientFactory())
using (var response = await client.GetAsync(baseUri))
{
response.EnsureSuccessStatusCode();
Trace(TraceEventType.Information, "RemoveAllWorkers, statusCode = {0}", response.StatusCode);
}
return;
}
private static string GetWebsiteAuthToken()
{
string websiteAuthEncryptionKey = System.Environment.GetEnvironmentVariable(SettingsKeys.AuthEncryptionKey);
DateTime expiry = DateTime.UtcNow.AddMinutes(5);
return(SimpleWebTokenHelper.CreateToken(expiry, websiteAuthEncryptionKey.ToKeyBytes()));
}
private static async Task PostAsync(string path, string requestId, string content = null)
{
var host = HttpHost;
var statusCode = default(HttpStatusCode);
Trace(TraceEventType.Verbose, "Begin HttpPost https://{0}{1}, x-ms-request-id: {2}", host, path, requestId);
try
{
using (var client = HttpClientFactory())
{
client.BaseAddress = new Uri(string.Format("https://{0}", host));
client.DefaultRequestHeaders.UserAgent.Add(_userAgent.Value);
client.DefaultRequestHeaders.Add(Constants.SiteRestrictedToken, SimpleWebTokenHelper.CreateToken(DateTime.UtcNow.AddMinutes(5)));
client.DefaultRequestHeaders.Add(Constants.RequestIdHeader, requestId);
var payload = new StringContent(content ?? string.Empty, Encoding.UTF8, "application/json");
using (var response = await client.PostAsync(path, payload))
{
statusCode = response.StatusCode;
response.EnsureSuccessStatusCode();
}
}
}
finally
{
Trace(TraceEventType.Verbose, "End HttpPost, status: {0}", statusCode);
}
}
// Throws on failure
private static async Task PostAsync(string path, string requestId, string hostName = null, string content = null)
{
var hostOrAuthority = IsLocalHost ? HttpAuthority : HttpHost;
hostName = hostName ?? hostOrAuthority;
var ipAddress = await GetAlternativeIPAddress(hostOrAuthority);
var scheme = IsLocalHost ? "http" : "https";
var statusCode = default(HttpStatusCode);
try
{
using (var client = HttpClientFactory())
{
if (ipAddress == null)
{
Trace(TraceEventType.Verbose, "Begin HttpPost {0}://{1}{2}, x-ms-request-id: {3}", scheme, hostName, path, requestId);
client.BaseAddress = new Uri(string.Format("{0}://{1}", scheme, hostName));
}
else
{
Trace(TraceEventType.Verbose, "Begin HttpPost {0}://{1}{2}, host: {3}, x-ms-request-id: {4}", scheme, ipAddress, path, hostName, requestId);
client.BaseAddress = new Uri(string.Format("{0}://{1}", scheme, ipAddress));
client.DefaultRequestHeaders.Host = hostName;
}
client.DefaultRequestHeaders.UserAgent.Add(_userAgent.Value);
client.DefaultRequestHeaders.Add(Constants.SiteRestrictedToken, SimpleWebTokenHelper.CreateToken(DateTime.UtcNow.AddMinutes(5)));
client.DefaultRequestHeaders.Add(Constants.RequestIdHeader, requestId);
var payload = new StringContent(content ?? string.Empty, Encoding.UTF8, "application/json");
using (var response = await client.PostAsync(path, payload))
{
statusCode = response.StatusCode;
response.EnsureSuccessStatusCode();
}
}
}
finally
{
Trace(TraceEventType.Verbose, "End HttpPost, status: {0}", statusCode);
}
}
// Throws on failure
public static async Task PostAsync(string path, string requestId, string content = null)
{
var hostOrAuthority = IsLocalHost ? HttpAuthority : HttpHost;
var scheme = IsLocalHost ? "http" : "https";
var ipAddress = await GetAlternativeIPAddress(hostOrAuthority);
var statusCode = default(HttpStatusCode);
string resContent = "";
try
{
using (var client = HttpClientFactory())
{
if (ipAddress == null)
{
Trace(TraceEventType.Verbose, "Begin HttpPost {0}://{1}{2}, x-ms-request-id: {3}", scheme, hostOrAuthority, path, requestId);
client.BaseAddress = new Uri(string.Format("{0}://{1}", scheme, hostOrAuthority));
}
else
{
Trace(TraceEventType.Verbose, "Begin HttpPost {0}://{1}{2}, host: {3}, x-ms-request-id: {4}", scheme, ipAddress, path, hostOrAuthority, requestId);
client.BaseAddress = new Uri(string.Format("{0}://{1}", scheme, ipAddress));
client.DefaultRequestHeaders.Host = hostOrAuthority;
}
client.DefaultRequestHeaders.UserAgent.Add(_userAgent.Value);
client.DefaultRequestHeaders.Add(Constants.SiteRestrictedToken, SimpleWebTokenHelper.CreateToken(DateTime.UtcNow.AddMinutes(5)));
client.DefaultRequestHeaders.Add(Constants.RequestIdHeader, requestId);
var payload = new StringContent(content ?? string.Empty, Encoding.UTF8, "application/json");
using (var response = await client.PostAsync(path, payload))
{
statusCode = response.StatusCode;
if (response.Content != null)
{
resContent = response.Content.ReadAsStringAsync().Result;
}
response.EnsureSuccessStatusCode();
}
if (path.Equals(Constants.UpdateDeployStatusPath) && resContent.Contains("Excessive SCM Site operation requests. Retry after 5 seconds"))
{
// Request was throttled throw an exception
// If max retries aren't reached, this request will be retried
Trace(TraceEventType.Information, $"Call to {path} was throttled. Setting statusCode to {HttpStatusCode.NotAcceptable}");
statusCode = HttpStatusCode.NotAcceptable;
throw new HttpRequestException();
}
}
}
catch (HttpRequestException ex)
{
if (path.Equals(Constants.UpdateDeployStatusPath, StringComparison.OrdinalIgnoreCase) && statusCode == HttpStatusCode.NotFound)
{
// Fail silently if 404 is encountered.
// This will only happen transiently during a platform upgrade if new bits aren't on the FrontEnd yet.
Trace(TraceEventType.Warning, $"Call to {path} ended in 404. {ex}");
}
else
{
throw;
}
}
finally
{
Trace(TraceEventType.Verbose, "End HttpPost, status: {0}", statusCode);
}
}