private static void LogSeed(int seed, ITestOutputHelper xUnitOutputHelper, IApmLogger loggerForNonXunitSinks, string dbgSeedDescription)
{
var message = $"Random generator seed: {seed} ({dbgSeedDescription})";
xUnitOutputHelper.WriteLine(message);
FindLevelToLog(loggerForNonXunitSinks)?.Let(foundLogLevel => loggerForNonXunitSinks.IfLevel(foundLogLevel)?.Log(message));
}
private void Serialize(object item, string eventType, TextWriter writer)
{
writer.Write("{\"");
writer.Write(eventType);
writer.Write("\":");
var traceLogger = _logger?.IfLevel(LogLevel.Trace);
if (traceLogger.HasValue)
{
var serialized = _payloadItemSerializer.Serialize(item);
writer.Write(serialized);
traceLogger.Value.Log("Serialized item to send: {ItemToSend} as {SerializedItem}", item, serialized);
}
else
{
_payloadItemSerializer.Serialize(item, writer);
}
writer.Write("}\n");
}
/// <summary>
/// We need this private ctor to avoid calling configStore.CurrentSnapshot twice (and thus possibly using different
/// snapshots)
/// when passing isEnabled: initialConfigSnapshot.CentralConfig and config: initialConfigSnapshot to base
/// </summary>
private CentralConfigFetcher(IApmLogger logger, IConfigStore configStore, IConfigSnapshot initialConfigSnapshot, Service service
, HttpMessageHandler httpMessageHandler, IAgentTimer agentTimer, string dbgName
)
: base(/* isEnabled: */ initialConfigSnapshot.CentralConfig, logger, ThisClassName, service, initialConfigSnapshot, httpMessageHandler)
{
_logger = logger?.Scoped(ThisClassName + (dbgName == null ? "" : $" (dbgName: `{dbgName}')"));
_initialSnapshot = initialConfigSnapshot;
var isCentralConfigOptEqDefault = _initialSnapshot.CentralConfig == ConfigConsts.DefaultValues.CentralConfig;
var centralConfigStatus = _initialSnapshot.CentralConfig ? "enabled" : "disabled";
if (!isCentralConfigOptEqDefault)
{
centralConfigStatus = centralConfigStatus.ToUpper();
}
_logger.IfLevel(isCentralConfigOptEqDefault ? LogLevel.Debug : LogLevel.Information)
?.Log("Central configuration feature is {CentralConfigStatus} because CentralConfig option's value is {CentralConfigOptionValue}"
+ " (default value is {CentralConfigOptionDefaultValue})"
, centralConfigStatus, _initialSnapshot.CentralConfig, ConfigConsts.DefaultValues.CentralConfig);
if (!_initialSnapshot.CentralConfig)
{
return;
}
_configStore = configStore;
_agentTimer = agentTimer ?? new AgentTimer();
_getConfigAbsoluteUrl = BackendCommUtils.ApmServerEndpoints.BuildGetConfigAbsoluteUrl(initialConfigSnapshot.ServerUrls.First(), service);
_logger.Debug()
?.Log("Combined absolute URL for APM Server get central configuration endpoint: `{Url}'. Service: {Service}."
, _getConfigAbsoluteUrl, service);
StartWorkLoop();
}
protected override async Task WorkLoopIteration()
{
++_dbgIterationsCount;
var waitingLogSeverity = LogLevel.Trace;
WaitInfoS waitInfo;
HttpRequestMessage httpRequest = null;
HttpResponseMessage httpResponse = null;
string httpResponseBody = null;
try
{
httpRequest = BuildHttpRequest(_eTag);
(httpResponse, httpResponseBody) = await FetchConfigHttpResponseAsync(httpRequest);
ConfigDelta configDelta;
(configDelta, waitInfo) = ProcessHttpResponse(httpResponse, httpResponseBody);
if (configDelta != null)
{
UpdateConfigStore(configDelta);
_eTag = httpResponse.Headers.ETag;
}
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception ex)
{
var severity = LogLevel.Error;
waitInfo = new WaitInfoS(WaitTimeIfAnyError, "Default wait time is used because exception was thrown"
+ " while fetching configuration from APM Server and parsing it.");
if (ex is FailedToFetchConfigException fEx)
{
severity = fEx.Severity;
fEx.WaitInfo?.Let(it => { waitInfo = it; });
}
if (severity == LogLevel.Error)
{
waitingLogSeverity = LogLevel.Information;
}
_logger.IfLevel(severity)
?.LogException(ex, "Exception was thrown while fetching configuration from APM Server and parsing it."
+ " ETag: `{ETag}'. URL: `{Url}'. Apm Server base URL: `{ApmServerUrl}'. WaitInterval: {WaitInterval}."
+ " dbgIterationsCount: {dbgIterationsCount}."
+ Environment.NewLine + "+-> Request:{HttpRequest}"
+ Environment.NewLine + "+-> Response:{HttpResponse}"
+ Environment.NewLine + "+-> Response body [length: {HttpResponseBodyLength}]:{HttpResponseBody}"
, _eTag.AsNullableToString(), _getConfigAbsoluteUrl, HttpClientInstance.BaseAddress, waitInfo.Interval.ToHms(),
_dbgIterationsCount
, httpRequest == null ? " N/A" : Environment.NewLine + TextUtils.Indent(httpRequest.ToString())
, httpResponse == null ? " N/A" : Environment.NewLine + TextUtils.Indent(httpResponse.ToString())
, httpResponseBody == null ? "N/A" : httpResponseBody.Length.ToString()
, httpResponseBody == null ? " N/A" : Environment.NewLine + TextUtils.Indent(httpResponseBody));
}
finally
{
httpRequest?.Dispose();
httpResponse?.Dispose();
}
_logger.IfLevel(waitingLogSeverity)
?.Log("Waiting {WaitInterval}... {WaitReason}. dbgIterationsCount: {dbgIterationsCount}."
, waitInfo.Interval.ToHms(), waitInfo.Reason, _dbgIterationsCount);
await _agentTimer.Delay(_agentTimer.Now + waitInfo.Interval, CtsInstance.Token);
}