/// <summary>
/// Create the querier options from the command line options.
/// </summary>
/// <param name="opts">The command line options.</param>
/// <returns>The querier options according to the command line options.</returns>
private static IQuerierOptions CreateQuerierOptions(GlobalOptions opts)
{
QuerierOptions returnOptions = QuerierOptions.Default;
if (opts.SnmpVersion.HasValue)
{
returnOptions = returnOptions.WithProtocolVersion(opts.SnmpVersion.Value.ToSnmpVersion()).WithCaching(opts.UseCaching);
}
return(returnOptions);
}
// TODO: Finalizer nur überschreiben, wenn Dispose(bool disposing) weiter oben Code für die Freigabe nicht verwalteter Ressourcen enthält.
// ~DataFetchingService()
// {
// // Ändern Sie diesen Code nicht. Fügen Sie Bereinigungscode in Dispose(bool disposing) weiter oben ein.
// Dispose(false);
// }
/// <inheritdoc />
public Task StartAsync(CancellationToken cancellationToken)
{
IConfigurationSection aquisisionServiceSection = this.configuration.GetSection(Program.RssiAquisitionServiceSectionKey);
this.usePenaltySystem = aquisisionServiceSection.GetValue<bool>(Program.PenaltySystemEnablingKey);
this.logger.LogInformation($"Penality system for RSSI aquisition: {(this.usePenaltySystem ? "enabled" : "disabled")}");
// configure thread pool for number of parallel queries
this.maxParallelQueries = aquisisionServiceSection.GetValue<int>("MaximumParallelQueries");
if (this.maxParallelQueries == 0)
{
this.maxParallelQueries = Environment.ProcessorCount;
}
ThreadPool.GetMinThreads(out int minWorkerThreads, out int minEaThreads);
ThreadPool.GetMaxThreads(out int maxworkerThreads, out int maxEaThreads);
this.logger.LogInformation($"Thread pool: Found: Min workers = {minWorkerThreads}, Max workers = {maxworkerThreads}, Min EA {minEaThreads}, Max EA {maxEaThreads}");
this.refreshInterval = TimeSpan.Parse(aquisisionServiceSection.GetValue<string>("RefreshInterval"));
var snmpVersion = aquisisionServiceSection.GetValue<int>("SnmpVersion");
if (snmpVersion != 0)
{
// 0 is the default value set by config framework and doesn't make any sense here - so we can use it to identify a missing config
this.snmpQuerierOptions = this.snmpQuerierOptions.WithProtocolVersion(snmpVersion.ToSnmpVersion());
}
var snmpTimeoutConfig = this.configuration.GetSection(Program.RssiAquisitionServiceSectionKey).GetValue<int>("SnmpTimeoutSeconds");
if (snmpTimeoutConfig != 0)
{
// 0 is the default value set by config framework and doesn't make any sense here - so we can use it to identify a missing config
this.snmpQuerierOptions = this.snmpQuerierOptions.WithTimeout(TimeSpan.FromSeconds(snmpTimeoutConfig));
}
var snmpRetriesConfig = aquisisionServiceSection.GetValue<int>("SnmpRetries");
if (snmpRetriesConfig != 0)
{
// 0 is the default value set by config framework and doesn't make any sense here - so we can use it to identify a missing config
this.snmpQuerierOptions = this.snmpQuerierOptions.WithRetries(snmpRetriesConfig);
}
this.snmpQuerierOptions = this.snmpQuerierOptions.WithCaching(aquisisionServiceSection.GetValue<bool>("UseQueryCaching"));
var hamnetDbConfig = this.configuration.GetSection(HamnetDbProvider.HamnetDbSectionName);
// by default waiting a couple of secs before first Hamnet scan
TimeSpan timeToFirstAquisition = TimeSpan.FromSeconds(11);
this.NewDatabaseContext();
var status = this.resultDatabaseContext.Status;
var nowItIs = DateTime.UtcNow;
var timeSinceLastAquisitionStart = (nowItIs - status.LastRssiQueryStart);
if (status.LastRssiQueryStart > status.LastRssiQueryEnd)
{
this.logger.LogInformation($"STARTING first RSSI aquisition immediately: Last aquisition started {status.LastRssiQueryStart} seems not to have ended successfully (last end time {status.LastRssiQueryEnd})");
}
else if (timeSinceLastAquisitionStart < this.refreshInterval)
{
// no aquisition required yet (e.g. service restart)
timeToFirstAquisition = this.refreshInterval - timeSinceLastAquisitionStart;
}
this.logger.LogInformation($"STARTING first RSSI aquisition after restart in {timeToFirstAquisition}: Last aquisition started {status.LastRssiQueryStart}, configured interval {this.refreshInterval}");
this.timer = new Timer(DoFetchData, null, timeToFirstAquisition, this.refreshInterval);
return Task.CompletedTask;
}
// TODO: Finalizer nur überschreiben, wenn Dispose(bool disposing) weiter oben Code für die Freigabe nicht verwalteter Ressourcen enthält.
// ~DataFetchingService()
// {
// // Ändern Sie diesen Code nicht. Fügen Sie Bereinigungscode in Dispose(bool disposing) weiter oben ein.
// Dispose(false);
// }
/// <inheritdoc />
public Task StartAsync(CancellationToken cancellationToken)
{
IConfigurationSection aquisisionServiceSection = this.configuration.GetSection(Program.BgpAquisitionServiceSectionKey);
this.usePenaltySystem = aquisisionServiceSection.GetValue <bool>(Program.PenaltySystemEnablingKey);
this.logger.LogInformation($"Penality system for BGP aquisition: {(this.usePenaltySystem ? "enabled" : "disabled")}");
// configure thread pool for number of parallel queries
this.maxParallelQueries = aquisisionServiceSection.GetValue <int>("MaximumParallelQueries");
if (this.maxParallelQueries == 0)
{
this.maxParallelQueries = Environment.ProcessorCount;
}
ThreadPool.GetMinThreads(out int minWorkerThreads, out int minEaThreads);
ThreadPool.GetMaxThreads(out int maxworkerThreads, out int maxEaThreads);
this.logger.LogInformation($"Thread pool: Found: Min workers = {minWorkerThreads}, Max workers = {maxworkerThreads}, Min EA {minEaThreads}, Max EA {maxEaThreads}");
this.refreshInterval = TimeSpan.Parse(aquisisionServiceSection.GetValue <string>("RefreshInterval"));
var monitoringAccountsSection = this.configuration.GetSection(Program.MonitoringAccountsSectionKey).GetSection(Program.BgpAccountSectionKey);
// we poll BGP solely using the vendor-specific APIs (SNMP is too fragile and slow for it)
this.snmpQuerierOptions = this.snmpQuerierOptions.WithAllowedApis(QueryApis.VendorSpecific);
var loginUserName = monitoringAccountsSection.GetValue <string>("User");
if (!string.IsNullOrWhiteSpace(loginUserName))
{
this.snmpQuerierOptions = this.snmpQuerierOptions.WithUser(loginUserName);
}
var loginPassword = monitoringAccountsSection.GetValue <string>("Password");
if (!string.IsNullOrWhiteSpace(loginPassword))
{
this.snmpQuerierOptions = this.snmpQuerierOptions.WithPassword(loginPassword);
}
this.snmpQuerierOptions = this.snmpQuerierOptions
.WithCaching(aquisisionServiceSection.GetValue <bool>("UseQueryCaching"))
.WithTimeout(TimeSpan.FromSeconds(2));
var hamnetDbConfig = this.configuration.GetSection(HamnetDbProvider.HamnetDbSectionName);
// get filter regex
var filterRegexConfig = aquisisionServiceSection.GetSection("WhitelistFilterRegex").GetChildren();
this.filterRegexList = filterRegexConfig.Select(c => new Regex(c.Value, RegexOptions.Compiled | RegexOptions.CultureInvariant | RegexOptions.IgnoreCase)).ToList();
if (this.filterRegexList.Count == 0)
{
this.filterRegexList.Add(new Regex(@".*", RegexOptions.Compiled | RegexOptions.CultureInvariant | RegexOptions.IgnoreCase));
}
// by default waiting a couple of secs before first Hamnet scan
TimeSpan timeToFirstAquisition = TimeSpan.FromSeconds(17);
this.NewDatabaseContext();
var status = this.resultDatabaseContext.Status;
var nowItIs = DateTime.UtcNow;
var timeSinceLastAquisitionStart = (nowItIs - status.LastBgpQueryStart);
if (status.LastBgpQueryStart > status.LastBgpQueryEnd)
{
this.logger.LogInformation($"STARTING first BGP aquisition immediately: Last aquisition started {status.LastBgpQueryStart} seems not to have ended successfully (last end time {status.LastBgpQueryEnd})");
}
else if (timeSinceLastAquisitionStart < this.refreshInterval)
{
// no aquisition required yet (e.g. service restart)
timeToFirstAquisition = this.refreshInterval - timeSinceLastAquisitionStart;
}
this.logger.LogInformation($"STARTING first BGP aquisition after restart in {timeToFirstAquisition}: Last aquisition started {status.LastBgpQueryStart}, configured interval {this.refreshInterval}");
this.timer = new Timer(DoFetchData, null, timeToFirstAquisition, this.refreshInterval);
return(Task.CompletedTask);
}