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MonitoringFactory.cxx
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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
///
/// \file MonitoringFactory.cxx
/// \author Adam Wegrzynek <adam.wegrzynek@cern.ch>
///
#include "Monitoring/MonitoringFactory.h"
#include "Exceptions/MonitoringException.h"
#include <functional>
#include <boost/algorithm/string.hpp>
#include "MonLogger.h"
#include "UriParser/UriParser.h"
#include "Backends/StdOut.h"
#include "Backends/Noop.h"
#include "Backends/InfluxDB.h"
#include "Transports/UDP.h"
#include "Transports/Unix.h"
#include "Transports/StdOut.h"
#include "Transports/WebSocket.h"
#ifdef O2_MONITORING_WITH_APPMON
#include "Backends/ApMonBackend.h"
#endif
#ifdef O2_MONITORING_WITH_KAFKA
#include "Transports/KafkaProducer.h"
#include "Transports/KafkaConsumer.h"
#endif
#ifdef O2_MONITORING_WITH_CURL
#include "Transports/HTTP.h"
#endif
namespace o2
{
/// ALICE O2 Monitoring system
namespace monitoring
{
static const std::map<std::string, Verbosity> verbosities = {
{"/prod", Verbosity::Prod},
{"/info", Verbosity::Info},
{"/debug", Verbosity::Debug}};
std::unique_ptr<Backend> getStdOut(http::url uri)
{
if (uri.search.size() > 0) {
return std::make_unique<backends::StdOut>(uri.search);
} else {
return std::make_unique<backends::StdOut>();
}
}
/// Extracts token from header add sets it as addition HTTP header
/// http://localhost:9999/?org=YOUR_ORG&bucket=YOUR_BUCKET&token=AUTH_TOKEN
/// ->
/// http://localhost:9999/api/v2/write?org=YOUR_ORG&bucket=YOUR_BUCKET
/// --header "Authorization: Token YOURAUTHTOKEN"
std::unique_ptr<Backend> getInfluxDbv2(http::url uri)
{
#ifdef O2_MONITORING_WITH_CURL
std::string tokenLabel = "token=";
std::string path = "/api/v2/write";
std::string query = uri.search;
auto tokenStart = query.find(tokenLabel);
auto tokenEnd = query.find('&', tokenStart);
if (tokenEnd == std::string::npos) {
tokenEnd = query.length();
}
std::string token = query.substr(tokenStart + tokenLabel.length(), tokenEnd-(tokenStart + tokenLabel.length()));
// make sure ampersand is removed
if (tokenEnd < query.length() && query.at(tokenEnd) == '&') tokenEnd++;
if (tokenStart > 0 && query.at(tokenStart-1) == '&') tokenStart--;
query.erase(tokenStart, tokenEnd - tokenStart);
auto transport = std::make_unique<transports::HTTP>("http://" + uri.host + ':' + std::to_string(uri.port) + path + '?' + query);
transport->addHeader("Authorization: Token " + token);
return std::make_unique<backends::InfluxDB>(std::move(transport));
#else
throw MonitoringException("Factory", "HTTP transport is not enabled");
#endif
}
std::unique_ptr<Backend> getInfluxDb(http::url uri)
{
auto const position = uri.protocol.find_last_of('-');
if (position != std::string::npos) {
uri.protocol = uri.protocol.substr(position + 1);
}
if (uri.protocol == "udp") {
auto transport = std::make_unique<transports::UDP>(uri.host, uri.port);
return std::make_unique<backends::InfluxDB>(std::move(transport));
}
if (uri.protocol == "unix") {
std::string path = uri.path;
auto found = std::find_if(begin(verbosities), end(verbosities),
[&](const auto& s) { return path.find(s.first) != std::string::npos; });
if (found != end(verbosities)) {
path.erase(path.rfind('/'));
}
auto transport = std::make_unique<transports::Unix>(path);
return std::make_unique<backends::InfluxDB>(std::move(transport));
}
if (uri.protocol == "stdout") {
auto transport = std::make_unique<transports::StdOut>();
return std::make_unique<backends::InfluxDB>(std::move(transport));
}
if (uri.protocol == "ws") {
std::string tokenLabel = "token=";
auto tokenSearch = uri.search.find(tokenLabel);
uri.path.erase(std::remove(uri.path.begin(), uri.path.end(), '/'), uri.path.end());
if (tokenSearch == std::string::npos) {
throw MonitoringException("Factory", "Grafana token is required for WebSocket backend");
}
std::string token = uri.search.substr(tokenSearch + tokenLabel.length());
auto transport = std::make_unique<transports::WebSocket>(uri.host, uri.port, token, uri.path);
return std::make_unique<backends::InfluxDB>(std::move(transport));
}
if (uri.protocol == "kafka") {
#ifdef O2_MONITORING_WITH_KAFKA
auto transport = std::make_unique<transports::KafkaProducer>(uri.host, uri.port, uri.search);
return std::make_unique<backends::InfluxDB>(std::move(transport));
#else
throw MonitoringException("Factory", "Kafka transport is not enabled");
#endif
}
throw MonitoringException("Factory", "InfluxDB transport not supported: " + uri.protocol);
}
#ifdef O2_MONITORING_WITH_APPMON
std::unique_ptr<Backend> getApMon(http::url uri)
{
return std::make_unique<backends::ApMonBackend>(uri.path);
}
#else
std::unique_ptr<Backend> getApMon(http::url /*uri*/)
{
throw MonitoringException("Factory", "ApMon backend is not enabled");
}
#endif
std::unique_ptr<Backend> getNoop(http::url /*uri*/)
{
return std::make_unique<backends::Noop>();
}
void MonitoringFactory::SetVerbosity(std::string selected, std::unique_ptr<Backend>& backend)
{
auto found = verbosities.find(selected);
if (found == verbosities.end()) {
return;
}
backend->setVerbosity(found->second);
MonLogger::Get() << "...verbosity set to "
<< static_cast<std::underlying_type<Verbosity>::type>(found->second)
<< MonLogger::End();
}
std::unique_ptr<Backend> MonitoringFactory::GetBackend(std::string& url)
{
static const std::map<std::string, std::function<std::unique_ptr<Backend>(const http::url&)>> map = {
{"infologger", getStdOut},
{"stdout", getStdOut},
{"influxdb-udp", getInfluxDb},
{"influxdb-unix", getInfluxDb},
{"influxdb-stdout", getInfluxDb},
{"influxdb-kafka", getInfluxDb},
{"influxdb-ws", getInfluxDb},
{"influxdbv2", getInfluxDbv2},
{"apmon", getApMon},
{"no-op", getNoop}
};
http::url parsedUrl = http::ParseHttpUrl(url);
if (parsedUrl.protocol.empty()) {
throw MonitoringException("Factory", "Ill-formed URI");
}
auto iterator = map.find(parsedUrl.protocol);
if (iterator == map.end()) {
throw MonitoringException("Factory", "Unrecognized backend " + parsedUrl.protocol);
}
try {
if (parsedUrl.user == "debug") {
MonLogger::mLoggerSeverity = Severity::Debug;
}
auto backend = iterator->second(parsedUrl);
if (!parsedUrl.path.empty() && parsedUrl.path != "/") {
SetVerbosity(parsedUrl.path.substr(parsedUrl.path.rfind("/")), backend);
}
return backend;
} catch (...) {
throw MonitoringException("Factory", "Unable to create backend " + parsedUrl.url);
}
}
std::unique_ptr<Monitoring> MonitoringFactory::Get(std::string urlsString)
{
auto monitoring = std::make_unique<Monitoring>();
std::vector<std::string> urls;
boost::split(urls, urlsString, boost::is_any_of(","));
for (auto url : urls) {
monitoring->addBackend(MonitoringFactory::GetBackend(url));
}
return monitoring;
}
#ifdef O2_MONITORING_WITH_KAFKA
std::unique_ptr<PullClient> MonitoringFactory::GetPullClient(const std::string &url, const std::vector<std::string>& topics, const std::string &label) {
auto client = std::make_unique<transports::KafkaConsumer>(url, topics, label);
return client;
#else
std::unique_ptr<PullClient> MonitoringFactory::GetPullClient(const std::string&, const std::vector<std::string>&, const std::string&) {
throw MonitoringException("Factory", "Compile library with Kafka");
#endif
}
} // namespace monitoring
} // namespace o2