public TriteURIMonitorWorker(string serverName,
string monitorURI,
int offsetCount,
TriteURIMonitorWorkerSettings monitorSettings,
Dictionary <string, string> tags,
string measurement,
ILogger <TriteURIMonitorWorker> logger)
{
this.serverName = serverName;
this.monitorURI = monitorURI;
this.logger = logger;
timer = new Stopwatch();
this.nextScan = DateTime.Now + (monitorSettings.OffsetAmount * offsetCount);
delay = monitorSettings.ScanDelay;
influxClient = new LineProtocolClient(
new Uri(monitorSettings.Influx.URI),
monitorSettings.Influx.Database,
monitorSettings.Influx.Username,
monitorSettings.Influx.Password);
measurementName = measurement;
this.tags = tags;
this.tags.Add("host", serverName);
logger.LogInformation($"Starting worker for: {monitorURI} (Scan delay: {delay}, next scan: {nextScan})");
}
public static void StartupTasks(HostBuilderContext hostContext, IServiceCollection services)
{
IConfiguration configuration = hostContext.Configuration;
TriteURIMonitorWorkerSettings workerSettings = new TriteURIMonitorWorkerSettings()
{
OffsetAmount = TimeSpan.FromMilliseconds(configuration.GetSection("ScanSettings:ScanOffsetMilliseconds").Get <int>()),
ScanDelay = TimeSpan.FromSeconds(configuration.GetSection("ScanSettings:ScanDelaySeconds").Get <int>()),
Influx = new InfluxDBSettings()
{
URI = configuration.GetSection("InfluxDBInfo:uri").Get <string>(),
Database = configuration.GetSection("InfluxDBInfo:database").Get <string>(),
Username = configuration.GetSection("InfluxDBInfo:username").Get <string>(),
Password = configuration.GetSection("InfluxDBInfo:password").Get <string>()
}
};
#region MonitorTemplateAddLater
/* TODO: Add section of "monitor templates" where a template can be used to simplify the config
*
* Example of template:
* {
* "TemplateName": "HomeDC",
* "TemplateData": {
* "Name": "{Name}",
* "MonitorPing": {
* "Enabled": true,
* "Address": "{Name}"
* },
* "MonitorURI": {
* "Enabled": true,
* "URI": "http://{Name}/"
* },
* "Tags": [
* {
* "Name": "DC",
* "Value": "{DCTag}"
* },
* {
* "Name": "SomeTag",
* "Value": "{SomeOtherTag}"
* }
* ]
* }
* }
*
* Example of monitor:
* {
* "FromTemplate": true,
* "TemplateName": "HomeDC",
* "Replacements":
* {
* "Name": "google.com",
* "DCTag": "Home",
* "SomeOtherTag": "SomeTagValue"
* }
* }
*
* // TODO: Revisit this later:
* Dictionary<string, IConfigurationSection> templates = new Dictionary<string, IConfigurationSection>();
*
* foreach (IConfigurationSection template in configuration.GetSection("Monitoring:MonitorTemplates").GetChildren())
* {
* templates.Add(
* template.GetValue<string>("TemplateName"),
* template.GetSection("Template")
* );
* }
*
* foreach (IConfigurationSection monitor in configuration.GetSection("Monitoring:Monitors").GetChildren())
* {
* bool fromTemplate = monitor.GetSection("FromTemplate").Get<bool>();
* if (fromTemplate)
* {
* string templateName = monitor.GetSection("TemplateName").Get<string>();
* IConfigurationSection template = templates[templateName];
*
* Dictionary<string, string> replacements = new Dictionary<string, string>();
* foreach (IConfigurationSection replacement in monitor.GetSection("Replacements").GetChildren())
* {
* replacements.Add(
* replacement.GetValue<string>("Key"),
* replacement.GetValue<string>("Value")
* );
* }
*
* string monitorName = replacements["{Name}"];
* if (monitorName is null)
* {
* monitorName = monitor.GetValue<string>("Name");
* if (monitorName is null)
* {
* throw new Exception("Monitor is listed as a template but lacks a Name replacement");
* }
* }
*
* bool monitorPing = template.GetSection("MonitorPing:Enabled").Get<bool>();
* string pingAddress;
* if (monitorPing)
* {
* pingAddress = template.GetSection("MonitorPing:Address").Get<string>();
* foreach (var replacement in replacements)
* {
* pingAddress = pingAddress.Replace(replacement.Key, replacement.Value);
* }
* }
* else
* {
* monitorPing = monitor.GetSection("MonitorPing:Enabled").Get<bool>();
* if (monitorPing)
* {
* pingAddress = monitor.GetSection("MonitorPing:Address").Get<string>();
* }
* }
* if (monitorPing)
* {
* // Fire up ping monitor
* }
*
* bool monitorURI = template.GetSection("MonitorURI:Enabled").Get<bool>();
* string uri;
* if (monitorURI)
* {
* uri = template.GetSection("MonitorURI:URI").Get<string>();
* foreach (var replacement in replacements)
* {
* uri = uri.Replace(replacement.Key, replacement.Value);
* }
* }
* else
* {
* monitorPing = monitor.GetSection("MonitorPing:Enabled").Get<bool>();
* if (monitorURI)
* {
* uri = monitor.GetSection("MonitorPing:Address").Get<string>();
* }
* }
* if (monitorURI)
* {
* // Fire up ping monitor
* }
*
* string adsf = "";
* }
* else
* {
*
* }
* }
*/
#endregion MonitorTemplateAddLater
// New way to get server list, ref: https://stackoverflow.com/a/44392604
// TODO: This should be replaced with templating later:
IEnumerable <IConfigurationSection> monitorEnumerable = configuration.GetSection("Monitors").GetChildren();
List <IConfigurationSection> monitorList = new List <IConfigurationSection>();
foreach (IConfigurationSection monitor in monitorEnumerable)
{
monitorList.Add(monitor);
}
IConfigurationSection[] monitors = monitorList.ToArray();
foreach (IConfigurationSection monitor in monitors)
{
string monitorName = monitor.GetValue <string>("Name");
Dictionary <string, string> monitorTags = new Dictionary <string, string>();
foreach (IConfigurationSection tags in monitor.GetSection("Tags").GetChildren())
{
monitorTags.Add(
tags.GetValue <string>("Name"),
tags.GetValue <string>("Value")
);
}
bool monitorPing = monitor.GetSection("MonitorPing:Enabled").Get <bool>();
if (monitorPing)
{
string pingAddress = monitor.GetSection("MonitorPing:Address").Get <string>();
string pingMeasurement = monitor.GetSection("MonitorPing:Measurement").Get <string>();
// TODO: Fire up ping monitor here (also: create ping monitor worker)
}
bool monitorURI = monitor.GetSection("MonitorURI:Enabled").Get <bool>();
if (monitorURI)
{
string uri = monitor.GetSection("MonitorURI:URI").Get <string>();
string urimeasurement = monitor.GetSection("MonitorURI:Measurement").Get <string>();
services.AddSingleton <IHostedService>(provider => new TriteURIMonitorWorker(
monitorName,
uri,
Array.IndexOf(monitors, monitor),
workerSettings,
monitorTags,
urimeasurement,
provider.GetService <ILogger <TriteURIMonitorWorker> >()));
}
}
/* TODO: remove this after implementing updated monitor config stuff, keeping for reference for now
*
* string[] serverList = configuration.GetSection("ScanSettings:ServerList").Get<string[]>();
* string uriFormat = configuration.GetSection("ScanSettings:URIFormat").Get<string>();
*
* foreach (string server in serverList)
* {
* string fullURI = string.Format(uriFormat, server);
* services.AddSingleton<IHostedService>(provider => new TriteURIMonitorWorker(
* server,
* fullURI,
* Array.IndexOf(serverList, server),
* workerSettings,
* provider.GetService<ILogger<TriteMonitorWorker>>()));
* }
*/
}
