diff options
Diffstat (limited to 'lib/perfdata/elasticsearchwriter.cpp')
| -rw-r--r-- | lib/perfdata/elasticsearchwriter.cpp | 686 |
1 files changed, 686 insertions, 0 deletions
diff --git a/lib/perfdata/elasticsearchwriter.cpp b/lib/perfdata/elasticsearchwriter.cpp new file mode 100644 index 0000000..3df9c91 --- /dev/null +++ b/lib/perfdata/elasticsearchwriter.cpp @@ -0,0 +1,686 @@ +/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */ + +#include "perfdata/elasticsearchwriter.hpp" +#include "perfdata/elasticsearchwriter-ti.cpp" +#include "remote/url.hpp" +#include "icinga/compatutility.hpp" +#include "icinga/service.hpp" +#include "icinga/checkcommand.hpp" +#include "base/application.hpp" +#include "base/defer.hpp" +#include "base/io-engine.hpp" +#include "base/tcpsocket.hpp" +#include "base/stream.hpp" +#include "base/base64.hpp" +#include "base/json.hpp" +#include "base/utility.hpp" +#include "base/networkstream.hpp" +#include "base/perfdatavalue.hpp" +#include "base/exception.hpp" +#include "base/statsfunction.hpp" +#include <boost/algorithm/string.hpp> +#include <boost/asio/ssl/context.hpp> +#include <boost/beast/core/flat_buffer.hpp> +#include <boost/beast/http/field.hpp> +#include <boost/beast/http/message.hpp> +#include <boost/beast/http/parser.hpp> +#include <boost/beast/http/read.hpp> +#include <boost/beast/http/status.hpp> +#include <boost/beast/http/string_body.hpp> +#include <boost/beast/http/verb.hpp> +#include <boost/beast/http/write.hpp> +#include <boost/scoped_array.hpp> +#include <memory> +#include <string> +#include <utility> + +using namespace icinga; + +REGISTER_TYPE(ElasticsearchWriter); + +REGISTER_STATSFUNCTION(ElasticsearchWriter, &ElasticsearchWriter::StatsFunc); + +void ElasticsearchWriter::OnConfigLoaded() +{ + ObjectImpl<ElasticsearchWriter>::OnConfigLoaded(); + + m_WorkQueue.SetName("ElasticsearchWriter, " + GetName()); + + if (!GetEnableHa()) { + Log(LogDebug, "ElasticsearchWriter") + << "HA functionality disabled. Won't pause connection: " << GetName(); + + SetHAMode(HARunEverywhere); + } else { + SetHAMode(HARunOnce); + } +} + +void ElasticsearchWriter::StatsFunc(const Dictionary::Ptr& status, const Array::Ptr& perfdata) +{ + DictionaryData nodes; + + for (const ElasticsearchWriter::Ptr& elasticsearchwriter : ConfigType::GetObjectsByType<ElasticsearchWriter>()) { + size_t workQueueItems = elasticsearchwriter->m_WorkQueue.GetLength(); + double workQueueItemRate = elasticsearchwriter->m_WorkQueue.GetTaskCount(60) / 60.0; + + nodes.emplace_back(elasticsearchwriter->GetName(), new Dictionary({ + { "work_queue_items", workQueueItems }, + { "work_queue_item_rate", workQueueItemRate } + })); + + perfdata->Add(new PerfdataValue("elasticsearchwriter_" + elasticsearchwriter->GetName() + "_work_queue_items", workQueueItems)); + perfdata->Add(new PerfdataValue("elasticsearchwriter_" + elasticsearchwriter->GetName() + "_work_queue_item_rate", workQueueItemRate)); + } + + status->Set("elasticsearchwriter", new Dictionary(std::move(nodes))); +} + +void ElasticsearchWriter::Resume() +{ + ObjectImpl<ElasticsearchWriter>::Resume(); + + m_EventPrefix = "icinga2.event."; + + Log(LogInformation, "ElasticsearchWriter") + << "'" << GetName() << "' resumed."; + + m_WorkQueue.SetExceptionCallback([this](boost::exception_ptr exp) { ExceptionHandler(std::move(exp)); }); + + /* Setup timer for periodically flushing m_DataBuffer */ + m_FlushTimer = new Timer(); + m_FlushTimer->SetInterval(GetFlushInterval()); + m_FlushTimer->OnTimerExpired.connect([this](const Timer * const&) { FlushTimeout(); }); + m_FlushTimer->Start(); + m_FlushTimer->Reschedule(0); + + /* Register for new metrics. */ + m_HandleCheckResults = Checkable::OnNewCheckResult.connect([this](const Checkable::Ptr& checkable, + const CheckResult::Ptr& cr, const MessageOrigin::Ptr&) { + CheckResultHandler(checkable, cr); + }); + m_HandleStateChanges = Checkable::OnStateChange.connect([this](const Checkable::Ptr& checkable, + const CheckResult::Ptr& cr, StateType type, const MessageOrigin::Ptr&) { + StateChangeHandler(checkable, cr, type); + }); + m_HandleNotifications = Checkable::OnNotificationSentToAllUsers.connect([this](const Notification::Ptr& notification, + const Checkable::Ptr& checkable, const std::set<User::Ptr>& users, const NotificationType& type, + const CheckResult::Ptr& cr, const String& author, const String& text, const MessageOrigin::Ptr&) { + NotificationSentToAllUsersHandler(notification, checkable, users, type, cr, author, text); + }); +} + +/* Pause is equivalent to Stop, but with HA capabilities to resume at runtime. */ +void ElasticsearchWriter::Pause() +{ + m_HandleCheckResults.disconnect(); + m_HandleStateChanges.disconnect(); + m_HandleNotifications.disconnect(); + + Flush(); + m_WorkQueue.Join(); + Flush(); + + Log(LogInformation, "ElasticsearchWriter") + << "'" << GetName() << "' paused."; + + ObjectImpl<ElasticsearchWriter>::Pause(); +} + +void ElasticsearchWriter::AddCheckResult(const Dictionary::Ptr& fields, const Checkable::Ptr& checkable, const CheckResult::Ptr& cr) +{ + String prefix = "check_result."; + + fields->Set(prefix + "output", cr->GetOutput()); + fields->Set(prefix + "check_source", cr->GetCheckSource()); + fields->Set(prefix + "exit_status", cr->GetExitStatus()); + fields->Set(prefix + "command", cr->GetCommand()); + fields->Set(prefix + "state", cr->GetState()); + fields->Set(prefix + "vars_before", cr->GetVarsBefore()); + fields->Set(prefix + "vars_after", cr->GetVarsAfter()); + + fields->Set(prefix + "execution_start", FormatTimestamp(cr->GetExecutionStart())); + fields->Set(prefix + "execution_end", FormatTimestamp(cr->GetExecutionEnd())); + fields->Set(prefix + "schedule_start", FormatTimestamp(cr->GetScheduleStart())); + fields->Set(prefix + "schedule_end", FormatTimestamp(cr->GetScheduleEnd())); + + /* Add extra calculated field. */ + fields->Set(prefix + "latency", cr->CalculateLatency()); + fields->Set(prefix + "execution_time", cr->CalculateExecutionTime()); + + if (!GetEnableSendPerfdata()) + return; + + Array::Ptr perfdata = cr->GetPerformanceData(); + + CheckCommand::Ptr checkCommand = checkable->GetCheckCommand(); + + if (perfdata) { + ObjectLock olock(perfdata); + for (const Value& val : perfdata) { + PerfdataValue::Ptr pdv; + + if (val.IsObjectType<PerfdataValue>()) + pdv = val; + else { + try { + pdv = PerfdataValue::Parse(val); + } catch (const std::exception&) { + Log(LogWarning, "ElasticsearchWriter") + << "Ignoring invalid perfdata for checkable '" + << checkable->GetName() << "' and command '" + << checkCommand->GetName() << "' with value: " << val; + continue; + } + } + + String escapedKey = pdv->GetLabel(); + boost::replace_all(escapedKey, " ", "_"); + boost::replace_all(escapedKey, ".", "_"); + boost::replace_all(escapedKey, "\\", "_"); + boost::algorithm::replace_all(escapedKey, "::", "."); + + String perfdataPrefix = prefix + "perfdata." + escapedKey; + + fields->Set(perfdataPrefix + ".value", pdv->GetValue()); + + if (!pdv->GetMin().IsEmpty()) + fields->Set(perfdataPrefix + ".min", pdv->GetMin()); + if (!pdv->GetMax().IsEmpty()) + fields->Set(perfdataPrefix + ".max", pdv->GetMax()); + if (!pdv->GetWarn().IsEmpty()) + fields->Set(perfdataPrefix + ".warn", pdv->GetWarn()); + if (!pdv->GetCrit().IsEmpty()) + fields->Set(perfdataPrefix + ".crit", pdv->GetCrit()); + + if (!pdv->GetUnit().IsEmpty()) + fields->Set(perfdataPrefix + ".unit", pdv->GetUnit()); + } + } +} + +void ElasticsearchWriter::CheckResultHandler(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr) +{ + if (IsPaused()) + return; + + m_WorkQueue.Enqueue([this, checkable, cr]() { InternalCheckResultHandler(checkable, cr); }); +} + +void ElasticsearchWriter::InternalCheckResultHandler(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr) +{ + AssertOnWorkQueue(); + + CONTEXT("Elasticwriter processing check result for '" + checkable->GetName() + "'"); + + if (!IcingaApplication::GetInstance()->GetEnablePerfdata() || !checkable->GetEnablePerfdata()) + return; + + Host::Ptr host; + Service::Ptr service; + tie(host, service) = GetHostService(checkable); + + Dictionary::Ptr fields = new Dictionary(); + + if (service) { + fields->Set("service", service->GetShortName()); + fields->Set("state", service->GetState()); + fields->Set("last_state", service->GetLastState()); + fields->Set("last_hard_state", service->GetLastHardState()); + } else { + fields->Set("state", host->GetState()); + fields->Set("last_state", host->GetLastState()); + fields->Set("last_hard_state", host->GetLastHardState()); + } + + fields->Set("host", host->GetName()); + fields->Set("state_type", checkable->GetStateType()); + + fields->Set("current_check_attempt", checkable->GetCheckAttempt()); + fields->Set("max_check_attempts", checkable->GetMaxCheckAttempts()); + + fields->Set("reachable", checkable->IsReachable()); + + CheckCommand::Ptr commandObj = checkable->GetCheckCommand(); + + if (commandObj) + fields->Set("check_command", commandObj->GetName()); + + double ts = Utility::GetTime(); + + if (cr) { + AddCheckResult(fields, checkable, cr); + ts = cr->GetExecutionEnd(); + } + + Enqueue(checkable, "checkresult", fields, ts); +} + +void ElasticsearchWriter::StateChangeHandler(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr, StateType type) +{ + if (IsPaused()) + return; + + m_WorkQueue.Enqueue([this, checkable, cr, type]() { StateChangeHandlerInternal(checkable, cr, type); }); +} + +void ElasticsearchWriter::StateChangeHandlerInternal(const Checkable::Ptr& checkable, const CheckResult::Ptr& cr, StateType type) +{ + AssertOnWorkQueue(); + + CONTEXT("Elasticwriter processing state change '" + checkable->GetName() + "'"); + + Host::Ptr host; + Service::Ptr service; + tie(host, service) = GetHostService(checkable); + + Dictionary::Ptr fields = new Dictionary(); + + fields->Set("current_check_attempt", checkable->GetCheckAttempt()); + fields->Set("max_check_attempts", checkable->GetMaxCheckAttempts()); + fields->Set("host", host->GetName()); + + if (service) { + fields->Set("service", service->GetShortName()); + fields->Set("state", service->GetState()); + fields->Set("last_state", service->GetLastState()); + fields->Set("last_hard_state", service->GetLastHardState()); + } else { + fields->Set("state", host->GetState()); + fields->Set("last_state", host->GetLastState()); + fields->Set("last_hard_state", host->GetLastHardState()); + } + + CheckCommand::Ptr commandObj = checkable->GetCheckCommand(); + + if (commandObj) + fields->Set("check_command", commandObj->GetName()); + + double ts = Utility::GetTime(); + + if (cr) { + AddCheckResult(fields, checkable, cr); + ts = cr->GetExecutionEnd(); + } + + Enqueue(checkable, "statechange", fields, ts); +} + +void ElasticsearchWriter::NotificationSentToAllUsersHandler(const Notification::Ptr& notification, + const Checkable::Ptr& checkable, const std::set<User::Ptr>& users, NotificationType type, + const CheckResult::Ptr& cr, const String& author, const String& text) +{ + if (IsPaused()) + return; + + m_WorkQueue.Enqueue([this, notification, checkable, users, type, cr, author, text]() { + NotificationSentToAllUsersHandlerInternal(notification, checkable, users, type, cr, author, text); + }); +} + +void ElasticsearchWriter::NotificationSentToAllUsersHandlerInternal(const Notification::Ptr& notification, + const Checkable::Ptr& checkable, const std::set<User::Ptr>& users, NotificationType type, + const CheckResult::Ptr& cr, const String& author, const String& text) +{ + AssertOnWorkQueue(); + + CONTEXT("Elasticwriter processing notification to all users '" + checkable->GetName() + "'"); + + Log(LogDebug, "ElasticsearchWriter") + << "Processing notification for '" << checkable->GetName() << "'"; + + Host::Ptr host; + Service::Ptr service; + tie(host, service) = GetHostService(checkable); + + String notificationTypeString = Notification::NotificationTypeToStringCompat(type); //TODO: Change that to our own types. + + Dictionary::Ptr fields = new Dictionary(); + + if (service) { + fields->Set("service", service->GetShortName()); + fields->Set("state", service->GetState()); + fields->Set("last_state", service->GetLastState()); + fields->Set("last_hard_state", service->GetLastHardState()); + } else { + fields->Set("state", host->GetState()); + fields->Set("last_state", host->GetLastState()); + fields->Set("last_hard_state", host->GetLastHardState()); + } + + fields->Set("host", host->GetName()); + + ArrayData userNames; + + for (const User::Ptr& user : users) { + userNames.push_back(user->GetName()); + } + + fields->Set("users", new Array(std::move(userNames))); + fields->Set("notification_type", notificationTypeString); + fields->Set("author", author); + fields->Set("text", text); + + CheckCommand::Ptr commandObj = checkable->GetCheckCommand(); + + if (commandObj) + fields->Set("check_command", commandObj->GetName()); + + double ts = Utility::GetTime(); + + if (cr) { + AddCheckResult(fields, checkable, cr); + ts = cr->GetExecutionEnd(); + } + + Enqueue(checkable, "notification", fields, ts); +} + +void ElasticsearchWriter::Enqueue(const Checkable::Ptr& checkable, const String& type, + const Dictionary::Ptr& fields, double ts) +{ + /* Atomically buffer the data point. */ + std::unique_lock<std::mutex> lock(m_DataBufferMutex); + + /* Format the timestamps to dynamically select the date datatype inside the index. */ + fields->Set("@timestamp", FormatTimestamp(ts)); + fields->Set("timestamp", FormatTimestamp(ts)); + + String eventType = m_EventPrefix + type; + fields->Set("type", eventType); + + /* Every payload needs a line describing the index. + * We do it this way to avoid problems with a near full queue. + */ + String indexBody = "{\"index\": {} }\n"; + String fieldsBody = JsonEncode(fields); + + Log(LogDebug, "ElasticsearchWriter") + << "Checkable '" << checkable->GetName() << "' adds to metric list: '" << fieldsBody << "'."; + + m_DataBuffer.emplace_back(indexBody + fieldsBody); + + /* Flush if we've buffered too much to prevent excessive memory use. */ + if (static_cast<int>(m_DataBuffer.size()) >= GetFlushThreshold()) { + Log(LogDebug, "ElasticsearchWriter") + << "Data buffer overflow writing " << m_DataBuffer.size() << " data points"; + Flush(); + } +} + +void ElasticsearchWriter::FlushTimeout() +{ + /* Prevent new data points from being added to the array, there is a + * race condition where they could disappear. + */ + std::unique_lock<std::mutex> lock(m_DataBufferMutex); + + /* Flush if there are any data available. */ + if (m_DataBuffer.size() > 0) { + Log(LogDebug, "ElasticsearchWriter") + << "Timer expired writing " << m_DataBuffer.size() << " data points"; + Flush(); + } +} + +void ElasticsearchWriter::Flush() +{ + /* Flush can be called from 1) Timeout 2) Threshold 3) on shutdown/reload. */ + if (m_DataBuffer.empty()) + return; + + /* Ensure you hold a lock against m_DataBuffer so that things + * don't go missing after creating the body and clearing the buffer. + */ + String body = boost::algorithm::join(m_DataBuffer, "\n"); + m_DataBuffer.clear(); + + /* Elasticsearch 6.x requires a new line. This is compatible to 5.x. + * Tested with 6.0.0 and 5.6.4. + */ + body += "\n"; + + SendRequest(body); +} + +void ElasticsearchWriter::SendRequest(const String& body) +{ + namespace beast = boost::beast; + namespace http = beast::http; + + Url::Ptr url = new Url(); + + url->SetScheme(GetEnableTls() ? "https" : "http"); + url->SetHost(GetHost()); + url->SetPort(GetPort()); + + std::vector<String> path; + + /* Specify the index path. Best practice is a daily rotation. + * Example: http://localhost:9200/icinga2-2017.09.11?pretty=1 + */ + path.emplace_back(GetIndex() + "-" + Utility::FormatDateTime("%Y.%m.%d", Utility::GetTime())); + + /* ES 6 removes multiple _type mappings: https://www.elastic.co/guide/en/elasticsearch/reference/6.x/removal-of-types.html + * Best practice is to statically define 'doc', as ES 5.X does not allow types starting with '_'. + */ + path.emplace_back("doc"); + + /* Use the bulk message format. */ + path.emplace_back("_bulk"); + + url->SetPath(path); + + OptionalTlsStream stream; + + try { + stream = Connect(); + } catch (const std::exception& ex) { + Log(LogWarning, "ElasticsearchWriter") + << "Flush failed, cannot connect to Elasticsearch: " << DiagnosticInformation(ex, false); + return; + } + + Defer s ([&stream]() { + if (stream.first) { + stream.first->next_layer().shutdown(); + } + }); + + http::request<http::string_body> request (http::verb::post, std::string(url->Format(true)), 10); + + request.set(http::field::user_agent, "Icinga/" + Application::GetAppVersion()); + request.set(http::field::host, url->GetHost() + ":" + url->GetPort()); + + /* Specify required headers by Elasticsearch. */ + request.set(http::field::accept, "application/json"); + + /* Use application/x-ndjson for bulk streams. While ES + * is able to handle application/json, the newline separator + * causes problems with Logstash (#6609). + */ + request.set(http::field::content_type, "application/x-ndjson"); + + /* Send authentication if configured. */ + String username = GetUsername(); + String password = GetPassword(); + + if (!username.IsEmpty() && !password.IsEmpty()) + request.set(http::field::authorization, "Basic " + Base64::Encode(username + ":" + password)); + + request.body() = body; + request.content_length(request.body().size()); + + /* Don't log the request body to debug log, this is already done above. */ + Log(LogDebug, "ElasticsearchWriter") + << "Sending " << request.method_string() << " request" << ((!username.IsEmpty() && !password.IsEmpty()) ? " with basic auth" : "" ) + << " to '" << url->Format() << "'."; + + try { + if (stream.first) { + http::write(*stream.first, request); + stream.first->flush(); + } else { + http::write(*stream.second, request); + stream.second->flush(); + } + } catch (const std::exception&) { + Log(LogWarning, "ElasticsearchWriter") + << "Cannot write to HTTP API on host '" << GetHost() << "' port '" << GetPort() << "'."; + throw; + } + + http::parser<false, http::string_body> parser; + beast::flat_buffer buf; + + try { + if (stream.first) { + http::read(*stream.first, buf, parser); + } else { + http::read(*stream.second, buf, parser); + } + } catch (const std::exception& ex) { + Log(LogWarning, "ElasticsearchWriter") + << "Failed to parse HTTP response from host '" << GetHost() << "' port '" << GetPort() << "': " << DiagnosticInformation(ex, false); + throw; + } + + auto& response (parser.get()); + + if (response.result_int() > 299) { + if (response.result() == http::status::unauthorized) { + /* More verbose error logging with Elasticsearch is hidden behind a proxy. */ + if (!username.IsEmpty() && !password.IsEmpty()) { + Log(LogCritical, "ElasticsearchWriter") + << "401 Unauthorized. Please ensure that the user '" << username + << "' is able to authenticate against the HTTP API/Proxy."; + } else { + Log(LogCritical, "ElasticsearchWriter") + << "401 Unauthorized. The HTTP API requires authentication but no username/password has been configured."; + } + + return; + } + + std::ostringstream msgbuf; + msgbuf << "Unexpected response code " << response.result_int() << " from URL '" << url->Format() << "'"; + + auto& contentType (response[http::field::content_type]); + + if (contentType != "application/json" && contentType != "application/json; charset=utf-8") { + msgbuf << "; Unexpected Content-Type: '" << contentType << "'"; + } + + auto& body (response.body()); + +#ifdef I2_DEBUG + msgbuf << "; Response body: '" << body << "'"; +#endif /* I2_DEBUG */ + + Dictionary::Ptr jsonResponse; + + try { + jsonResponse = JsonDecode(body); + } catch (...) { + Log(LogWarning, "ElasticsearchWriter") + << "Unable to parse JSON response:\n" << body; + return; + } + + String error = jsonResponse->Get("error"); + + Log(LogCritical, "ElasticsearchWriter") + << "Error: '" << error << "'. " << msgbuf.str(); + } +} + +OptionalTlsStream ElasticsearchWriter::Connect() +{ + Log(LogNotice, "ElasticsearchWriter") + << "Connecting to Elasticsearch on host '" << GetHost() << "' port '" << GetPort() << "'."; + + OptionalTlsStream stream; + bool tls = GetEnableTls(); + + if (tls) { + Shared<boost::asio::ssl::context>::Ptr sslContext; + + try { + sslContext = MakeAsioSslContext(GetCertPath(), GetKeyPath(), GetCaPath()); + } catch (const std::exception&) { + Log(LogWarning, "ElasticsearchWriter") + << "Unable to create SSL context."; + throw; + } + + stream.first = Shared<AsioTlsStream>::Make(IoEngine::Get().GetIoContext(), *sslContext, GetHost()); + + } else { + stream.second = Shared<AsioTcpStream>::Make(IoEngine::Get().GetIoContext()); + } + + try { + icinga::Connect(tls ? stream.first->lowest_layer() : stream.second->lowest_layer(), GetHost(), GetPort()); + } catch (const std::exception&) { + Log(LogWarning, "ElasticsearchWriter") + << "Can't connect to Elasticsearch on host '" << GetHost() << "' port '" << GetPort() << "'."; + throw; + } + + if (tls) { + auto& tlsStream (stream.first->next_layer()); + + try { + tlsStream.handshake(tlsStream.client); + } catch (const std::exception&) { + Log(LogWarning, "ElasticsearchWriter") + << "TLS handshake with host '" << GetHost() << "' on port " << GetPort() << " failed."; + throw; + } + + if (!GetInsecureNoverify()) { + if (!tlsStream.GetPeerCertificate()) { + BOOST_THROW_EXCEPTION(std::runtime_error("Elasticsearch didn't present any TLS certificate.")); + } + + if (!tlsStream.IsVerifyOK()) { + BOOST_THROW_EXCEPTION(std::runtime_error( + "TLS certificate validation failed: " + std::string(tlsStream.GetVerifyError()) + )); + } + } + } + + return std::move(stream); +} + +void ElasticsearchWriter::AssertOnWorkQueue() +{ + ASSERT(m_WorkQueue.IsWorkerThread()); +} + +void ElasticsearchWriter::ExceptionHandler(boost::exception_ptr exp) +{ + Log(LogCritical, "ElasticsearchWriter", "Exception during Elastic operation: Verify that your backend is operational!"); + + Log(LogDebug, "ElasticsearchWriter") + << "Exception during Elasticsearch operation: " << DiagnosticInformation(std::move(exp)); +} + +String ElasticsearchWriter::FormatTimestamp(double ts) +{ + /* The date format must match the default dynamic date detection + * pattern in indexes. This enables applications like Kibana to + * detect a qualified timestamp index for time-series data. + * + * Example: 2017-09-11T10:56:21.463+0200 + * + * References: + * https://www.elastic.co/guide/en/elasticsearch/reference/current/dynamic-field-mapping.html#date-detection + * https://www.elastic.co/guide/en/elasticsearch/reference/current/mapping-date-format.html + * https://www.elastic.co/guide/en/elasticsearch/reference/current/date.html + */ + auto milliSeconds = static_cast<int>((ts - static_cast<int>(ts)) * 1000); + + return Utility::FormatDateTime("%Y-%m-%dT%H:%M:%S", ts) + "." + Convert::ToString(milliSeconds) + Utility::FormatDateTime("%z", ts); +} |