private void HttpRequest(string log)
{
bool isSendALAHeaderErr = false;
bool isSendALADataErr = false;
while (true)
{
try
{
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
if (isSendALAHeaderErr)
{
appender.log.Err($"[{appender.Name}] - retry sending Azure Log Analytics header...");
}
if (isSendALADataErr)
{
appender.log.Err($"[{appender.Name}] - retry sending Azure Log Analytics data...");
}
}
headerBuilder.Clear();
string result = string.Empty;
var utf8Encoding = new UTF8Encoding();
Byte[] content = utf8Encoding.GetBytes(log);
var rfcDate = DateTime.Now.ToUniversalTime().ToString("r");
var signature = HashSignature("POST", content.Length, "application/json", rfcDate, "/api/logs");
string alaServerAddr = $"{appender.WorkspaceId}.ods.opinsights.azure.com";
string alaServerContext = $"/api/logs?api-version={appender.AzureApiVersion}";
// Send request headers
headerBuilder.AppendLine($"POST {alaServerContext} HTTP/1.1");
headerBuilder.AppendLine($"Host: {alaServerAddr}");
headerBuilder.AppendLine($"Content-Length: " + content.Length); // only for POST request
headerBuilder.AppendLine("Content-Type: application/json");
headerBuilder.AppendLine($"Log-Type: {appender.LogType}");
headerBuilder.AppendLine($"x-ms-date: {rfcDate}");
headerBuilder.AppendLine($"Authorization: {signature}");
headerBuilder.AppendLine($"time-generated-field: {appender.coreFields.DateFieldName}");
headerBuilder.AppendLine("Connection: close");
headerBuilder.AppendLine();
var header = Encoding.ASCII.GetBytes(headerBuilder.ToString());
// Send http headers
string headerRes = alaClient.Write(header, 0, header.Length, true);
if (!headerRes.Equals("isHeader"))
{
isSendALAHeaderErr = true;
string errMessage = $"send Azure Log Analytics header failed - {headerRes}";
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
appender.log.Err($"[{appender.Name}] - {errMessage}");
}
throw new Exception(errMessage);
}
// Send payload data
string httpResultBody = alaClient.Write(content, 0, content.Length);
if (!string.IsNullOrWhiteSpace(httpResultBody))
{
isSendALADataErr = true;
string errMessage = $"send Azure Log Analytics data failed - {httpResultBody}";
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
appender.log.Err($"[{appender.Name}] - {errMessage}");
}
throw new Exception(errMessage);
}
try
{
//no loggings in case of LogManager.Shutdown() -> AbortWorker;
appender.log.Inf($"[{appender.Name}] - {log}", appender.LogMessageToFile);
}
catch
{
//continue
}
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
if (isSendALAHeaderErr)
{
appender.log.Err($"[{appender.Name}] - retry sending Azure Log Analytics header succeeded");
}
if (isSendALADataErr)
{
appender.log.Err($"[{appender.Name}] - retry sending Azure Log Analytics data succeeded");
}
}
isSendALAHeaderErr = false;
isSendALADataErr = false;
}
catch (Exception ex)
{
// Reopen the lost connection.
string errMessage = $"reopen lost connection and retry...";
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
appender.log.Err($"[{appender.Name}] - {errMessage}");
System.Console.WriteLine($@"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ffffff")}|Log4ALA|[{appender.Name}]|ERROR|[{nameof(QueueLogger)}.HttpRequest] - [{errMessage}]");
}
Connect();
continue;
}
//unblock AbortWorker if AbortWorker has canceld the background worker thread
if (this.cToken.IsCancellationRequested == true)
{
this.manualResetEvent.Set();
}
break;
}
}
private void HttpRequest(string log)
{
bool isSendALAHeaderErr = false;
bool isSendALADataErr = false;
while (true)
{
try
{
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
if (isSendALAHeaderErr)
{
appender.log.Err($"[{appender.Name}] - retry sending Azure Log Analytics header...");
}
if (isSendALADataErr)
{
appender.log.Err($"[{appender.Name}] - retry sending Azure Log Analytics data...");
}
}
headerBuilder.Clear();
string result = string.Empty;
var utf8Encoding = new UTF8Encoding();
Byte[] content = utf8Encoding.GetBytes(log);
var rfcDate = DateTime.Now.ToUniversalTime().ToString("r");
var signature = HashSignature("POST", content.Length, "application/json", rfcDate, "/api/logs");
// for http debugging please install httpbin (https://github.com/requests/httpbin) locally as docker container:
//
// docker pull kennethreitz/httpbin
//
// and start with:
//
// docker run -p 80:80 kennethreitz / httpbin
//
// and replacefor alaServerAddr with http://localhost/anything by setting the property debugHTTPReqURI=http://localhost/anything to inspect the http request
// which will then be logged into log4ALA_info.log instead of sending to Azure Log Analytics data collector API.
string alaServerAddr = $"{appender.WorkspaceId}.ods.opinsights.azure.com";
string alaServerContext = $"/api/logs?api-version={appender.AzureApiVersion}";
if (!string.IsNullOrWhiteSpace(appender.DebugHTTPReqURI))
{
string[] uriSplit = appender.DebugHTTPReqURI.Split('/');
alaServerAddr = uriSplit[2];
alaServerContext = $"/{uriSplit[3]}{alaServerContext}";
}
// Send request headers
headerBuilder.AppendLine($"POST {alaServerContext} HTTP/1.1");
headerBuilder.AppendLine($"Host: {alaServerAddr}");
headerBuilder.AppendLine($"Content-Length: " + content.Length); // only for POST request
headerBuilder.AppendLine("Content-Type: application/json");
headerBuilder.AppendLine($"Log-Type: {appender.LogType}");
headerBuilder.AppendLine($"x-ms-date: {rfcDate}");
headerBuilder.AppendLine($"Authorization: {signature}");
headerBuilder.AppendLine($"time-generated-field: {appender.coreFields.DateFieldName}");
headerBuilder.AppendLine("Connection: close");
headerBuilder.AppendLine();
var header = utf8Encoding.GetBytes(headerBuilder.ToString());
string httpResultBody;
if (!string.IsNullOrWhiteSpace(appender.DebugHTTPReqURI))
{
headerBuilder.Append(log);
string reqStr = headerBuilder.ToString();
var req = utf8Encoding.GetBytes(reqStr);
StringBuilder responseBuilder = new StringBuilder();
using (Stream networkStream = alaClient.ActiveStream)
{
networkStream.Write(req, 0, req.Length);
networkStream.Flush();
#if NET45 || NET451
Task.Run(() =>
#else
Task.Factory.StartNew(() =>
#endif
{
var bufout = new byte[req.Length];
int readlen = 0;
do
{
readlen = networkStream.Read(bufout, 0, bufout.Length);
responseBuilder.Append(System.Text.Encoding.UTF8.GetString(bufout, 0, readlen));
} while (readlen != 0);
}).Wait();
}
httpResultBody = responseBuilder.ToString();
}
else
{
// Send http headers
string headerRes = alaClient.Write(header, 0, header.Length, true);
if (!headerRes.Equals("isHeader"))
{
isSendALAHeaderErr = true;
string errMessage = $"send Azure Log Analytics header failed - {headerRes}";
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
appender.log.Err($"[{appender.Name}] - {errMessage}");
}
throw new Exception(errMessage);
}
// Send payload data
httpResultBody = alaClient.Write(content, 0, content.Length);
}
if (!string.IsNullOrWhiteSpace(httpResultBody))
{
if (string.IsNullOrWhiteSpace(appender.DebugHTTPReqURI))
{
isSendALADataErr = true;
string errMessage = $"send Azure Log Analytics data failed - {httpResultBody}";
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
appender.log.Err($"[{appender.Name}] - {errMessage}");
}
throw new Exception(errMessage);
}
else
{
//appender.log.Inf($"[{appender.Name}] - http request: \n{headerBuilder.ToString()}{log}", appender.LogMessageToFile);
appender.log.Inf($"[{appender.Name}] - http debug response from [{appender.DebugHTTPReqURI}]: \n{httpResultBody}", appender.LogMessageToFile);
}
}
try
{
if (string.IsNullOrWhiteSpace(appender.DebugHTTPReqURI))
{
//no loggings in case of LogManager.Shutdown() -> AbortWorker;
appender.log.Inf($"[{appender.Name}] - {log}", appender.LogMessageToFile);
}
}
catch
{
//continue
}
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
if (isSendALAHeaderErr)
{
appender.log.Err($"[{appender.Name}] - retry sending Azure Log Analytics header succeeded");
}
if (isSendALADataErr)
{
appender.log.Err($"[{appender.Name}] - retry sending Azure Log Analytics data succeeded");
}
}
isSendALAHeaderErr = false;
isSendALADataErr = false;
}
catch (Exception ex)
{
// Reopen the lost connection.
string errMessage = $"reopen lost connection and retry...";
if (ConfigSettings.ALAEnableDebugConsoleLog)
{
appender.log.Err($"[{appender.Name}] - {errMessage}");
System.Console.WriteLine($@"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.ffffff")}|Log4ALA|[{appender.Name}]|ERROR|[{nameof(QueueLogger)}.HttpRequest] - [{errMessage}]");
}
Connect();
continue;
}
//unblock AbortWorker if AbortWorker has canceld the background worker thread
if (this.cToken.IsCancellationRequested == true)
{
this.manualResetEvent.Set();
}
break;
}
}
