public ActionResult Get(string name, string format = "json")
{
if (format.ToLower() == "html")
{
return(Content(GetHtml(name), "text/html"));
}
// Note: FO produces Json output for health report messages/logs..
ContentResult ret = Content(string.Empty);
string networkObserverLogText = null, osObserverLogText = null, nodeObserverLogText = null, appObserverLogText = null, fabricSystemObserverLogText = null, diskObserverLogText = null;
string logFolder;
try
{
System.Fabric.Description.ConfigurationSettings configSettings = this.serviceContext.CodePackageActivationContext.GetConfigurationPackageObject("Config").Settings;
logFolder = Utilities.GetConfigurationSetting(configSettings, "FabricObserverLogs", "ObserverLogBaseFolderPath");
if (!Directory.Exists(logFolder))
{
throw new ArgumentException($"Specified log folder, {logFolder}, does not exist.");
}
}
catch (Exception e)
{
ret = Content(e.ToString());
return(ret);
}
// Observer log paths.
string appObserverLogPath = Path.Combine(logFolder, "AppObserver", "AppObserver.log");
string osObserverLogPath = Path.Combine(logFolder, "OSObserver", "OSObserver.log");
string diskObserverLogPath = Path.Combine(logFolder, "DiskObserver", "DiskObserver.log");
string networkObserverLogPath = Path.Combine(logFolder, "NetworkObserver", "NetworkObserver.log");
string fabricSystemObserverLogPath = Path.Combine(logFolder, "FabricSystemObserver", "FabricSystemObserver.log");
string nodeObserverLogPath = Path.Combine(logFolder, "NodeObserver", "NodeObserver.log");
// Implicit retry loop. Will run only once if no exceptions arise.
// Can only run at most MaxRetries times.
for (int i = 0; i < MaxRetries; i++)
{
try
{
if (System.IO.File.Exists(appObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(appObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
appObserverLogText = System.IO.File.ReadAllText(appObserverLogPath, Encoding.UTF8);
}
if (System.IO.File.Exists(diskObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(diskObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
diskObserverLogText = System.IO.File.ReadAllText(diskObserverLogPath, Encoding.UTF8);
}
if (System.IO.File.Exists(fabricSystemObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(fabricSystemObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
fabricSystemObserverLogText = System.IO.File.ReadAllText(fabricSystemObserverLogPath, Encoding.UTF8);
}
if (System.IO.File.Exists(networkObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(networkObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
networkObserverLogText = System.IO.File.ReadAllText(networkObserverLogPath, Encoding.UTF8);
}
if (System.IO.File.Exists(nodeObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(nodeObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
nodeObserverLogText = System.IO.File.ReadAllText(nodeObserverLogPath, Encoding.UTF8);
}
if (System.IO.File.Exists(osObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(osObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
osObserverLogText = System.IO.File.ReadAllText(osObserverLogPath, Encoding.UTF8);
}
string reportItems = string.Empty;
switch (name.ToLower())
{
case "appobserver":
reportItems = GetObserverErrWarnLogEntryListFromLogText(appObserverLogText);
break;
case "diskobserver":
reportItems = GetObserverErrWarnLogEntryListFromLogText(diskObserverLogText);
break;
case "fabricsystemobserver":
reportItems = GetObserverErrWarnLogEntryListFromLogText(fabricSystemObserverLogText);
break;
case "networkobserver":
reportItems = GetObserverErrWarnLogEntryListFromLogText(networkObserverLogText);
break;
case "nodeobserver":
reportItems = GetObserverErrWarnLogEntryListFromLogText(nodeObserverLogText);
break;
case "osobserver":
reportItems = GetObserverErrWarnLogEntryListFromLogText(osObserverLogText);
break;
default:
return(Json("Specified Observer, " + name + ", does not exist."));
}
ret = Content(reportItems);
break;
}
catch (IOException)
{
}
// If we get here, let's wait a second before the next iteration.
Task.Delay(1000).Wait();
}
return(ret);
}
private string GetHtml(string name)
{
string html = string.Empty;
string logFolder;
string nodeName = this.serviceContext.NodeContext.NodeName;
System.Fabric.Description.ConfigurationSettings configSettings = this.serviceContext.CodePackageActivationContext.GetConfigurationPackageObject("Config").Settings;
string networkObserverLogText = null, osObserverLogText = null, nodeObserverLogText = null, appObserverLogText = null, fabricSystemObserverLogText = null, diskObserverLogText = null;
logFolder = Utilities.GetConfigurationSetting(configSettings, "FabricObserverLogs", "ObserverLogBaseFolderPath");
// Observer log paths.
string appObserverLogPath = Path.Combine(logFolder, "AppObserver", "AppObserver.log");
string osObserverLogPath = Path.Combine(logFolder, "OSObserver", "OSObserver.log");
string diskObserverLogPath = Path.Combine(logFolder, "DiskObserver", "DiskObserver.log");
string networkObserverLogPath = Path.Combine(logFolder, "NetworkObserver", "NetworkObserver.log");
string fabricSystemObserverLogPath = Path.Combine(logFolder, "FabricSystemObserver", "FabricSystemObserver.log");
string nodeObserverLogPath = Path.Combine(logFolder, "NodeObserver", "NodeObserver.log");
// Implicit retry loop. Will run only once if no exceptions arise.
// Can only run at most MaxRetries times.
for (int i = 0; i < MaxRetries; i++)
{
try
{
if (System.IO.File.Exists(appObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(appObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
appObserverLogText = System.IO.File.ReadAllText(appObserverLogPath, Encoding.UTF8).Replace(Environment.NewLine, "<br/>");
}
if (System.IO.File.Exists(diskObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(diskObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
diskObserverLogText = System.IO.File.ReadAllText(diskObserverLogPath, Encoding.UTF8).Replace(Environment.NewLine, "<br/>");
}
if (System.IO.File.Exists(fabricSystemObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(fabricSystemObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
fabricSystemObserverLogText = System.IO.File.ReadAllText(fabricSystemObserverLogPath, Encoding.UTF8).Replace(Environment.NewLine, "<br/>");
}
if (System.IO.File.Exists(networkObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(networkObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
networkObserverLogText = System.IO.File.ReadAllText(networkObserverLogPath, Encoding.UTF8).Replace(Environment.NewLine, "<br/>");
}
if (System.IO.File.Exists(nodeObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(nodeObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
nodeObserverLogText = System.IO.File.ReadAllText(nodeObserverLogPath, Encoding.UTF8).Replace(Environment.NewLine, "<br/>");
}
if (System.IO.File.Exists(osObserverLogPath) &&
System.IO.File.GetCreationTimeUtc(osObserverLogPath).ToShortDateString() == DateTime.UtcNow.ToShortDateString())
{
osObserverLogText = System.IO.File.ReadAllText(osObserverLogPath, Encoding.UTF8).Trim();
}
string host = Request.Host.Value;
string nodeLinks = string.Empty;
// Request originating from ObserverWeb node hyperlinks.
if (Request.QueryString.HasValue && Request.Query.ContainsKey("fqdn"))
{
host = Request.Query["fqdn"];
// Node links.
System.Fabric.Query.NodeList nodeList = this.fabricClient.QueryManager.GetNodeListAsync().Result;
IOrderedEnumerable <System.Fabric.Query.Node> ordered = nodeList.OrderBy(node => node.NodeName);
foreach (System.Fabric.Query.Node node in ordered)
{
nodeLinks += "| <a href='" + Request.Scheme + "://" + host + "/api/ObserverLog/" + name + "/" + node.NodeName + "/html'>" + node.NodeName + "</a> | ";
}
}
this.sb = new StringBuilder();
_ = this.sb.AppendLine("<html>\n\t<head>");
_ = this.sb.AppendLine("\n\t\t<title>FabricObserver Observer Report: Errors and Warnings</title>");
_ = this.sb.AppendLine("\n\t\t" + this.script);
_ = this.sb.AppendLine("\n\t\t<style type=\"text/css\">\n" +
"\t\t\t.container {\n" +
"\t\t\t\tfont-family: Consolas; font-size: 14px; background-color: lightblue; padding: 5px; border: 1px solid grey; " +
"width: 98%;\n" +
"\t\t\t}\n" +
"\t\t\t.header {\n" +
"\t\t\t\tfont-size: 25px; text-align: center; background-color: lightblue; " +
"padding 5px; margin-bottom: 10px;\n" +
"\t\t\t}\n" +
"\t\t\tpre {\n" +
"\t\t\t\toverflow-x: auto; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;" +
"\t\t\t}\n" +
"\t\t\t a:link { text-decoration: none; }" +
"\n\t\t</style>");
_ = this.sb.AppendLine("\n\t</head>");
_ = this.sb.AppendLine("\n\t<body>");
_ = this.sb.AppendLine("\n\t\t\t <br/>");
_ = this.sb.AppendLine("\n\t\t\t\t<div class=\"container\"><div style=\"position: relative; width: 100%; margin-left: auto; margin-right: auto;\"><br/><strong>Errors and Warnings for " + name + " on " + nodeName + "</strong><br/><br/>" + nodeLinks);
switch (name.ToLower())
{
case "appobserver":
if (!string.IsNullOrEmpty(appObserverLogText))
{
_ = this.sb.AppendLine("\n\t\t\t<br/><br/>" + "\n\t\t\t" + appObserverLogText + "<br/><br/>");
}
break;
case "diskobserver":
if (!string.IsNullOrEmpty(diskObserverLogText))
{
_ = this.sb.AppendLine("\n\t\t\t<br/><br/>" + "\n\t\t\t" + diskObserverLogText + "<br/><br/>");
}
break;
case "fabricsystemobserver":
if (!string.IsNullOrEmpty(fabricSystemObserverLogText))
{
_ = this.sb.AppendLine("\n\t\t\t<br/><br/>" + "\n\t\t\t" + fabricSystemObserverLogText + "<br/><br/>");
}
break;
case "networkobserver":
if (!string.IsNullOrEmpty(networkObserverLogText))
{
_ = this.sb.AppendLine("\n\t\t\t<br/><br/>" + "\n\t\t\t" + networkObserverLogText + "<br/><br/>");
}
break;
case "nodeobserver":
if (!string.IsNullOrEmpty(nodeObserverLogText))
{
_ = this.sb.AppendLine("\n\t\t\t<br/><br/>" + "\n\t\t\t" + nodeObserverLogText + "<br/><br/>");
}
break;
case "osobserver":
if (!string.IsNullOrEmpty(osObserverLogText))
{
_ = this.sb.AppendLine("\n\t\t\t<br/><br/>" + "\n\t\t\t" + osObserverLogText + "<br/><br/>");
}
break;
default:
_ = this.sb.AppendLine("\n\t\t\t<br/>Specified Observer, " + name + ", does not exist.");
break;
}
_ = this.sb.AppendLine("\n\t\t\t</div>");
_ = this.sb.AppendLine("\n\t</body>");
_ = this.sb.AppendLine("</html>");
html = this.sb.ToString();
_ = this.sb.Clear();
break;
}
catch (IOException ie)
{
html = ie.ToString();
}
// If we get here, let's wait a few seconds before the next iteration.
Task.Delay(2000).Wait();
}
return(html);
}
