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collabora-online/wsd/Admin.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <chrono>
#include <config.h>
#include <cassert>
#include <sys/poll.h>
#include <unistd.h>
#include <Poco/Net/HTTPCookie.h>
#include <Poco/Net/HTTPRequest.h>
#include <Poco/Net/HTTPResponse.h>
#include "Admin.hpp"
#include "AdminModel.hpp"
#include "Auth.hpp"
#include <Common.hpp>
#include "FileServer.hpp"
#include <Log.hpp>
#include <Protocol.hpp>
#include "Storage.hpp"
#include "TileCache.hpp"
#include <StringVector.hpp>
#include <Unit.hpp>
#include <Util.hpp>
#include <net/Socket.hpp>
#if ENABLE_SSL
#include <SslSocket.hpp>
#endif
#include <net/WebSocketHandler.hpp>
#include <common/SigUtil.hpp>
using namespace COOLProtocol;
using Poco::Net::HTTPResponse;
using Poco::Util::Application;
const int Admin::MinStatsIntervalMs = 50;
const int Admin::DefStatsIntervalMs = 1000;
const std::string levelList[] = {"none", "fatal", "critical", "error", "warning", "notice", "information", "debug", "trace"};
/// Process incoming websocket messages
void AdminSocketHandler::handleMessage(const std::vector<char> &payload)
{
// FIXME: check fin, code etc.
const std::string firstLine = getFirstLine(payload.data(), payload.size());
StringVector tokens(StringVector::tokenize(firstLine, ' '));
LOG_TRC("Recv: " << firstLine << " tokens " << tokens.size());
if (tokens.empty())
{
LOG_TRC("too few tokens");
return;
}
AdminModel& model = _admin->getModel();
if (tokens.equals(0, "auth"))
{
if (tokens.size() < 2)
{
LOG_DBG("Auth command without any token");
sendMessage("InvalidAuthToken");
shutdown();
ignoreInput();
return;
}
std::string jwtToken;
COOLProtocol::getTokenString(tokens[1], "jwt", jwtToken);
LOG_INF("Verifying JWT token: " << jwtToken);
JWTAuth authAgent("admin", "admin", "admin");
if (authAgent.verify(jwtToken))
{
LOG_TRC("JWT token is valid");
_isAuthenticated = true;
return;
}
else
{
LOG_DBG("Invalid auth token");
sendMessage("InvalidAuthToken");
shutdown();
ignoreInput();
return;
}
}
if (!_isAuthenticated)
{
LOG_DBG("Not authenticated - message is '" << firstLine << "' " <<
tokens.size() << " first: '" << tokens[0] << '\'');
sendMessage("NotAuthenticated");
shutdown();
ignoreInput();
return;
}
else if (tokens.equals(0, "documents") ||
tokens.equals(0, "active_users_count") ||
tokens.equals(0, "active_docs_count") ||
tokens.equals(0, "mem_stats") ||
tokens.equals(0, "cpu_stats") ||
tokens.equals(0, "sent_activity") ||
tokens.equals(0, "recv_activity"))
{
const std::string result = model.query(tokens[0]);
if (!result.empty())
sendTextFrame(tokens[0] + ' ' + result);
}
else if (tokens.equals(0, "history"))
{
sendTextFrame("{ \"History\": " + model.getAllHistory() + '}');
}
else if (tokens.equals(0, "version"))
{
// Send COOL version information
sendTextFrame("coolserver " + Util::getVersionJSON(EnableExperimental));
// Send LOKit version information
sendTextFrame("lokitversion " + COOLWSD::LOKitVersion);
}
else if (tokens.equals(0, "subscribe") && tokens.size() > 1)
{
for (std::size_t i = 0; i < tokens.size() - 1; i++)
{
model.subscribe(_sessionId, tokens[i + 1]);
}
}
else if (tokens.equals(0, "unsubscribe") && tokens.size() > 1)
{
for (std::size_t i = 0; i < tokens.size() - 1; i++)
{
model.unsubscribe(_sessionId, tokens[i + 1]);
}
}
else if (tokens.equals(0, "mem_consumed"))
sendTextFrame("mem_consumed " + std::to_string(_admin->getTotalMemoryUsage()));
else if (tokens.equals(0, "total_avail_mem"))
sendTextFrame("total_avail_mem " + std::to_string(_admin->getTotalAvailableMemory()));
else if (tokens.equals(0, "sent_bytes"))
sendTextFrame("sent_bytes " + std::to_string(model.getSentBytesTotal() / 1024));
else if (tokens.equals(0, "recv_bytes"))
sendTextFrame("recv_bytes " + std::to_string(model.getRecvBytesTotal() / 1024));
else if (tokens.equals(0, "uptime"))
sendTextFrame("uptime " + std::to_string(model.getServerUptimeSecs()));
else if (tokens.equals(0, "log_lines"))
sendTextFrame("log_lines " + _admin->getLogLines());
else if (tokens.equals(0, "kill") && tokens.size() == 2)
{
try
{
const int pid = std::stoi(tokens[1]);
LOG_INF("Admin request to kill PID: " << pid);
std::set<pid_t> pids = model.getDocumentPids();
if (pids.find(pid) != pids.end())
{
SigUtil::killChild(pid, SIGKILL);
}
else
{
LOG_ERR("Invalid PID to kill (not a document pid)");
}
}
catch (std::invalid_argument& exc)
{
LOG_ERR("Invalid PID to kill (invalid argument): " << tokens[1]);
}
catch (std::out_of_range& exc)
{
LOG_ERR("Invalid PID to kill (out of range): " << tokens[1]);
}
}
else if (tokens.equals(0, "settings"))
{
// for now, we have only these settings
std::ostringstream oss;
oss << "settings "
<< "mem_stats_size=" << model.query("mem_stats_size") << ' '
<< "mem_stats_interval=" << std::to_string(_admin->getMemStatsInterval()) << ' '
<< "cpu_stats_size=" << model.query("cpu_stats_size") << ' '
<< "cpu_stats_interval=" << std::to_string(_admin->getCpuStatsInterval()) << ' '
<< "net_stats_size=" << model.query("net_stats_size") << ' '
<< "net_stats_interval=" << std::to_string(_admin->getNetStatsInterval()) << ' ';
const DocProcSettings& docProcSettings = _admin->getDefDocProcSettings();
oss << "limit_virt_mem_mb=" << docProcSettings.getLimitVirtMemMb() << ' '
<< "limit_stack_mem_kb=" << docProcSettings.getLimitStackMemKb() << ' '
<< "limit_file_size_mb=" << docProcSettings.getLimitFileSizeMb() << ' '
<< "limit_num_open_files=" << docProcSettings.getLimitNumberOpenFiles() << ' ';
sendTextFrame(oss.str());
}
else if (tokens.equals(0, "channel_list"))
{
sendTextFrame("channel_list " + _admin->getChannelLogLevels());
}
else if (tokens.equals(0, "shutdown"))
{
LOG_INF("Setting ShutdownRequestFlag: Shutdown requested by admin.");
SigUtil::requestShutdown();
return;
}
else if (tokens.equals(0, "set") && tokens.size() > 1)
{
for (size_t i = 1; i < tokens.size(); i++)
{
StringVector setting(StringVector::tokenize(tokens[i], '='));
int settingVal = 0;
try
{
settingVal = std::stoi(setting[1]);
}
catch (const std::exception& exc)
{
LOG_ERR("Invalid setting value: " << setting[1] <<
" for " << setting[0]);
return;
}
const std::string settingName = setting[0];
if (settingName == "mem_stats_size")
{
if (settingVal != std::stol(model.query(settingName)))
{
model.setMemStatsSize(settingVal);
}
}
else if (settingName == "mem_stats_interval")
{
if (settingVal != static_cast<int>(_admin->getMemStatsInterval()))
{
_admin->rescheduleMemTimer(settingVal);
model.clearMemStats();
model.notify("settings mem_stats_interval=" + std::to_string(_admin->getMemStatsInterval()));
}
}
else if (settingName == "cpu_stats_size")
{
if (settingVal != std::stol(model.query(settingName)))
{
model.setCpuStatsSize(settingVal);
}
}
else if (settingName == "cpu_stats_interval")
{
if (settingVal != static_cast<int>(_admin->getCpuStatsInterval()))
{
_admin->rescheduleCpuTimer(settingVal);
model.clearCpuStats();
model.notify("settings cpu_stats_interval=" + std::to_string(_admin->getCpuStatsInterval()));
}
}
else if (COOLProtocol::matchPrefix("limit_", settingName))
{
DocProcSettings docProcSettings = _admin->getDefDocProcSettings();
if (settingName == "limit_virt_mem_mb")
docProcSettings.setLimitVirtMemMb(settingVal);
else if (settingName == "limit_stack_mem_kb")
docProcSettings.setLimitStackMemKb(settingVal);
else if (settingName == "limit_file_size_mb")
docProcSettings.setLimitFileSizeMb(settingVal);
else if (settingName == "limit_num_open_files")
docProcSettings.setLimitNumberOpenFiles(settingVal);
else
LOG_ERR("Unknown limit: " << settingName);
model.notify("settings " + settingName + '=' + std::to_string(settingVal));
_admin->setDefDocProcSettings(docProcSettings, true);
}
}
}
else if (tokens.equals(0, "update-log-levels") && tokens.size() > 1) {
for (size_t i = 1; i < tokens.size(); i++)
{
StringVector _channel(StringVector::tokenize(tokens[i], '='));
if (_channel.size() == 2)
{
_admin->setChannelLogLevel((_channel[0] != "?" ? _channel[0]: ""), _channel[1]);
}
}
// Let's send back the current log levels in return. So the user can be sure of the values.
sendTextFrame("channel_list " + _admin->getChannelLogLevels());
}
}
AdminSocketHandler::AdminSocketHandler(Admin* adminManager,
const std::weak_ptr<StreamSocket>& socket,
const Poco::Net::HTTPRequest& request)
: WebSocketHandler(socket.lock(), request)
, _admin(adminManager)
, _isAuthenticated(false)
{
// Different session id pool for admin sessions (?)
_sessionId = Util::decodeId(COOLWSD::GetConnectionId());
}
AdminSocketHandler::AdminSocketHandler(Admin* adminManager)
: WebSocketHandler(/* isClient = */ true, /* isMasking = */ true),
_admin(adminManager),
_isAuthenticated(true)
{
_sessionId = Util::decodeId(COOLWSD::GetConnectionId());
}
void AdminSocketHandler::sendTextFrame(const std::string& message)
{
if (!Util::isFuzzing())
{
UnitWSD::get().onAdminQueryMessage(message);
}
if (_isAuthenticated)
{
LOG_TRC("send admin text frame '" << message << '\'');
sendMessage(message);
}
else
LOG_TRC("Skip sending message to non-authenticated client: '" << message << '\'');
}
void AdminSocketHandler::subscribeAsync(const std::shared_ptr<AdminSocketHandler>& handler)
{
Admin &admin = Admin::instance();
admin.addCallback([handler]
{
Admin &adminIn = Admin::instance();
adminIn.getModel().subscribe(handler->_sessionId, handler);
});
}
bool AdminSocketHandler::handleInitialRequest(
const std::weak_ptr<StreamSocket> &socketWeak,
const Poco::Net::HTTPRequest& request)
{
if (!COOLWSD::AdminEnabled)
{
LOG_ERR("Request for disabled admin console");
return false;
}
std::shared_ptr<StreamSocket> socket = socketWeak.lock();
if (!socket)
{
LOG_ERR("Invalid socket while reading initial request.");
return false;
}
const std::string& requestURI = request.getURI();
StringVector pathTokens(StringVector::tokenize(requestURI, '/'));
if (request.has("Upgrade") && Util::iequal(request["Upgrade"], "websocket"))
{
Admin &admin = Admin::instance();
auto handler = std::make_shared<AdminSocketHandler>(&admin, socketWeak, request);
socket->setHandler(handler);
AdminSocketHandler::subscribeAsync(handler);
return true;
}
HTTPResponse response;
response.setStatusAndReason(HTTPResponse::HTTP_BAD_REQUEST);
response.setContentLength(0);
LOG_INF("Admin::handleInitialRequest bad request");
socket->send(response);
return false;
}
/// An admin command processor.
Admin::Admin() :
SocketPoll("admin"),
_forKitPid(-1),
_lastTotalMemory(0),
_lastJiffies(0),
_lastSentCount(0),
_lastRecvCount(0),
_cpuStatsTaskIntervalMs(DefStatsIntervalMs),
_memStatsTaskIntervalMs(DefStatsIntervalMs * 2),
_netStatsTaskIntervalMs(DefStatsIntervalMs * 2),
_cleanupIntervalMs(DefStatsIntervalMs * 10)
{
LOG_INF("Admin ctor.");
_totalSysMemKb = Util::getTotalSystemMemoryKb();
LOG_TRC("Total system memory: " << _totalSysMemKb << " KB.");
const auto memLimit = COOLWSD::getConfigValue<double>("memproportion", 0.0);
_totalAvailMemKb = _totalSysMemKb;
if (memLimit != 0.0)
_totalAvailMemKb = _totalSysMemKb * memLimit / 100.;
LOG_TRC("Total available memory: " << _totalAvailMemKb << " KB (memproportion: " << memLimit << "%).");
const size_t totalMem = getTotalMemoryUsage();
LOG_TRC("Total memory used: " << totalMem << " KB.");
_model.addMemStats(totalMem);
}
Admin::~Admin()
{
LOG_INF("~Admin dtor.");
}
void Admin::pollingThread()
{
_model.setThreadOwner(std::this_thread::get_id());
std::chrono::steady_clock::time_point lastCPU = std::chrono::steady_clock::now();
std::chrono::steady_clock::time_point lastMem = lastCPU;
std::chrono::steady_clock::time_point lastNet = lastCPU;
std::chrono::steady_clock::time_point lastCleanup = lastCPU;
while (!isStop() && !SigUtil::getTerminationFlag() && !SigUtil::getShutdownRequestFlag())
{
const std::chrono::steady_clock::time_point now = std::chrono::steady_clock::now();
int cpuWait = _cpuStatsTaskIntervalMs -
std::chrono::duration_cast<std::chrono::milliseconds>(now - lastCPU).count();
if (cpuWait <= MinStatsIntervalMs / 2) // Close enough
{
const size_t currentJiffies = getTotalCpuUsage();
const size_t cpuPercent = 100 * 1000 * currentJiffies / (sysconf (_SC_CLK_TCK) * _cpuStatsTaskIntervalMs);
_model.addCpuStats(cpuPercent);
cpuWait += _cpuStatsTaskIntervalMs;
lastCPU = now;
}
int memWait = _memStatsTaskIntervalMs -
std::chrono::duration_cast<std::chrono::milliseconds>(now - lastMem).count();
if (memWait <= MinStatsIntervalMs / 2) // Close enough
{
_model.UpdateMemoryDirty();
const size_t totalMem = getTotalMemoryUsage();
_model.addMemStats(totalMem);
if (totalMem != _lastTotalMemory)
{
// If our total memory consumption is above limit, cleanup
triggerMemoryCleanup(totalMem);
_lastTotalMemory = totalMem;
}
notifyDocsMemDirtyChanged();
memWait += _memStatsTaskIntervalMs;
lastMem = now;
}
int netWait = _netStatsTaskIntervalMs -
std::chrono::duration_cast<std::chrono::milliseconds>(now - lastNet).count();
if (netWait <= MinStatsIntervalMs / 2) // Close enough
{
const uint64_t sentCount = _model.getSentBytesTotal();
const uint64_t recvCount = _model.getRecvBytesTotal();
_model.addSentStats(sentCount - _lastSentCount);
_model.addRecvStats(recvCount - _lastRecvCount);
if (_lastRecvCount != recvCount || _lastSentCount != sentCount)
{
LOG_TRC("Total Data sent: " << sentCount << ", recv: " << recvCount);
_lastRecvCount = recvCount;
_lastSentCount = sentCount;
}
netWait += _netStatsTaskIntervalMs;
lastNet = now;
}
int cleanupWait = _cleanupIntervalMs;
if (_defDocProcSettings.getCleanupSettings().getEnable())
{
cleanupWait
-= std::chrono::duration_cast<std::chrono::milliseconds>(now - lastCleanup).count();
if (cleanupWait <= MinStatsIntervalMs / 2) // Close enough
{
cleanupResourceConsumingDocs();
if (_defDocProcSettings.getCleanupSettings().getLostKitGracePeriod())
cleanupLostKits();
cleanupWait += _cleanupIntervalMs;
lastCleanup = now;
}
}
// (re)-connect (with sync. DNS - urk) to one monitor at a time
if (_pendingConnects.size())
{
MonitorConnectRecord rec = _pendingConnects[0];
if (rec.getWhen() < now)
{
_pendingConnects.erase(_pendingConnects.begin());
connectToMonitorSync(rec.getUri());
}
}
// Handle websockets & other work.
const auto timeout = std::chrono::milliseconds(capAndRoundInterval(
std::min(std::min(std::min(cpuWait, memWait), netWait), cleanupWait)));
LOG_TRC("Admin poll for " << timeout);
poll(timeout); // continue with ms for admin, settings etc.
}
}
void Admin::modificationAlert(const std::string& dockey, pid_t pid, bool value){
addCallback([=] { _model.modificationAlert(dockey, pid, value); });
}
void Admin::addDoc(const std::string& docKey, pid_t pid, const std::string& filename,
const std::string& sessionId, const std::string& userName, const std::string& userId,
const int smapsFD, const std::string& wopiHost)
{
addCallback([=] { _model.addDocument(docKey, pid, filename, sessionId, userName, userId, smapsFD, wopiHost); });
}
void Admin::rmDoc(const std::string& docKey, const std::string& sessionId)
{
addCallback([=] { _model.removeDocument(docKey, sessionId); });
}
void Admin::rmDoc(const std::string& docKey)
{
LOG_INF("Removing complete doc [" << docKey << "] from Admin.");
addCallback([=]{ _model.removeDocument(docKey); });
}
void Admin::rescheduleMemTimer(unsigned interval)
{
_memStatsTaskIntervalMs = capAndRoundInterval(interval);
LOG_INF("Memory stats interval changed - New interval: " << _memStatsTaskIntervalMs);
_netStatsTaskIntervalMs = capAndRoundInterval(interval); // Until we support modifying this.
LOG_INF("Network stats interval changed - New interval: " << _netStatsTaskIntervalMs);
wakeup();
}
void Admin::rescheduleCpuTimer(unsigned interval)
{
_cpuStatsTaskIntervalMs = capAndRoundInterval(interval);
LOG_INF("CPU stats interval changed - New interval: " << _cpuStatsTaskIntervalMs);
wakeup();
}
size_t Admin::getTotalMemoryUsage()
{
// To simplify and clarify this; since load, link and pre-init all
// inside the forkit - we should account all of our fixed cost of
// memory to the forkit; and then count only dirty pages in the clients
// since we know that they share everything else with the forkit.
const size_t forkitRssKb = Util::getMemoryUsageRSS(_forKitPid);
const size_t wsdPssKb = Util::getMemoryUsagePSS(getpid());
const size_t kitsDirtyKb = _model.getKitsMemoryUsage();
const size_t totalMem = wsdPssKb + forkitRssKb + kitsDirtyKb;
return totalMem;
}
size_t Admin::getTotalCpuUsage()
{
const size_t forkitJ = Util::getCpuUsage(_forKitPid);
const size_t wsdJ = Util::getCpuUsage(getpid());
const size_t kitsJ = _model.getKitsJiffies();
if (_lastJiffies == 0)
{
_lastJiffies = forkitJ + wsdJ;
return 0;
}
const size_t totalJ = ((forkitJ + wsdJ) - _lastJiffies) + kitsJ;
_lastJiffies = forkitJ + wsdJ;
return totalJ;
}
unsigned Admin::getMemStatsInterval()
{
assertCorrectThread();
return _memStatsTaskIntervalMs;
}
unsigned Admin::getCpuStatsInterval()
{
assertCorrectThread();
return _cpuStatsTaskIntervalMs;
}
unsigned Admin::getNetStatsInterval()
{
assertCorrectThread();
return _netStatsTaskIntervalMs;
}
std::string Admin::getChannelLogLevels()
{
unsigned int wsdLogLevel = Log::logger().get("wsd").getLevel();
std::string result = "wsd=" + levelList[wsdLogLevel];
result += " kit=" + (_forkitLogLevel.empty() != true ? _forkitLogLevel: levelList[wsdLogLevel]);
return result;
}
void Admin::setChannelLogLevel(const std::string& channelName, std::string level)
{
assertCorrectThread();
// Get the list of channels..
std::vector<std::string> nameList;
Log::logger().names(nameList);
if (std::find(std::begin(levelList), std::end(levelList), level) == std::end(levelList))
level = "debug";
if (channelName == "wsd")
Log::logger().get("wsd").setLevel(level);
else if (channelName == "kit")
{
COOLWSD::setLogLevelsOfKits(level); // For current kits.
COOLWSD::sendMessageToForKit("setloglevel " + level); // For forkit and future kits.
_forkitLogLevel = level; // We will remember this setting rather than asking forkit its loglevel.
}
}
std::string Admin::getLogLines()
{
assertCorrectThread();
try {
int lineCount = 500;
std::string fName = COOLWSD::getPathFromConfig("logging.file.property[0]");
std::ifstream infile(fName);
std::string line;
std::deque<std::string> lines;
while (std::getline(infile, line))
{
std::istringstream iss(line);
lines.push_back(line);
if (lines.size() > (size_t)lineCount)
{
lines.pop_front();
}
}
infile.close();
if (lines.size() < (size_t)lineCount)
{
lineCount = (int)lines.size();
}
line = ""; // Use the same variable to include result.
// Newest will be on top.
for (int i = lineCount - 1; i >= 0; i--)
{
line += "\n" + lines[i];
}
return line;
}
catch (const std::exception& e) {
return "Could not read the log file.";
}
}
AdminModel& Admin::getModel()
{
return _model;
}
void Admin::updateLastActivityTime(const std::string& docKey)
{
addCallback([=]{ _model.updateLastActivityTime(docKey); });
}
void Admin::addBytes(const std::string& docKey, uint64_t sent, uint64_t recv)
{
addCallback([=] { _model.addBytes(docKey, sent, recv); });
}
void Admin::setViewLoadDuration(const std::string& docKey, const std::string& sessionId, std::chrono::milliseconds viewLoadDuration)
{
addCallback([=]{ _model.setViewLoadDuration(docKey, sessionId, viewLoadDuration); });
}
void Admin::setDocWopiDownloadDuration(const std::string& docKey, std::chrono::milliseconds wopiDownloadDuration)
{
addCallback([=]{ _model.setDocWopiDownloadDuration(docKey, wopiDownloadDuration); });
}
void Admin::setDocWopiUploadDuration(const std::string& docKey, const std::chrono::milliseconds uploadDuration)
{
addCallback([=]{ _model.setDocWopiUploadDuration(docKey, uploadDuration); });
}
void Admin::addSegFaultCount(unsigned segFaultCount)
{
addCallback([=]{ _model.addSegFaultCount(segFaultCount); });
}
void Admin::addLostKitsTerminated(unsigned lostKitsTerminated)
{
addCallback([=]{ _model.addLostKitsTerminated(lostKitsTerminated); });
}
void Admin::notifyForkit()
{
std::ostringstream oss;
oss << "setconfig limit_virt_mem_mb " << _defDocProcSettings.getLimitVirtMemMb() << '\n'
<< "setconfig limit_stack_mem_kb " << _defDocProcSettings.getLimitStackMemKb() << '\n'
<< "setconfig limit_file_size_mb " << _defDocProcSettings.getLimitFileSizeMb() << '\n'
<< "setconfig limit_num_open_files " << _defDocProcSettings.getLimitNumberOpenFiles() << '\n';
COOLWSD::sendMessageToForKit(oss.str());
}
void Admin::triggerMemoryCleanup(const size_t totalMem)
{
// Trigger mem cleanup when we are consuming too much memory (as configured by sysadmin)
static const double memLimit = COOLWSD::getConfigValue<double>("memproportion", 0.0);
if (memLimit == 0.0 || _totalSysMemKb == 0)
{
LOG_TRC("Total memory consumed: " << totalMem <<
" KB. Not configured to do memory cleanup. Skipping memory cleanup.");
return;
}
LOG_TRC("Total memory consumed: " << totalMem << " KB. Configured COOL memory proportion: " <<
memLimit << "% (" << static_cast<size_t>(_totalSysMemKb * memLimit / 100.) << " KB).");
const double memToFreePercentage = (totalMem / static_cast<double>(_totalSysMemKb)) - memLimit / 100.;
int memToFreeKb = static_cast<int>(memToFreePercentage > 0.0 ? memToFreePercentage * _totalSysMemKb : 0);
// Don't kill documents to save a KB or two.
if (memToFreeKb > 1024)
{
// prepare document list sorted by most idle times
const std::vector<DocBasicInfo> docList = _model.getDocumentsSortedByIdle();
LOG_TRC("OOM: Memory to free: " << memToFreePercentage << "% (" <<
memToFreeKb << " KB) from " << docList.size() << " docs.");
for (const auto& doc : docList)
{
LOG_TRC("OOM Document: DocKey: [" << doc.getDocKey() << "], Idletime: [" << doc.getIdleTime() << "]," <<
" Saved: [" << doc.getSaved() << "], Mem: [" << doc.getMem() << "].");
if (doc.getSaved())
{
// Kill the saved documents first.
LOG_DBG("OOM: Killing saved document with DocKey [" << doc.getDocKey() << "] with " << doc.getMem() << " KB.");
COOLWSD::closeDocument(doc.getDocKey(), "oom");
memToFreeKb -= doc.getMem();
if (memToFreeKb <= 1024)
break;
}
else
{
// Save unsaved documents.
LOG_TRC("Saving document: DocKey [" << doc.getDocKey() << "].");
COOLWSD::autoSave(doc.getDocKey());
}
}
}
}
void Admin::notifyDocsMemDirtyChanged()
{
_model.notifyDocsMemDirtyChanged();
}
void Admin::cleanupResourceConsumingDocs()
{
_model.cleanupResourceConsumingDocs();
}
void Admin::cleanupLostKits()
{
static std::map<pid_t, std::time_t> mapKitsLost;
std::set<pid_t> internalKitPids;
std::vector<int> kitPids;
int pid;
unsigned lostKitsTerminated = 0;
size_t gracePeriod = _defDocProcSettings.getCleanupSettings().getLostKitGracePeriod();
internalKitPids = COOLWSD::getKitPids();
AdminModel::getKitPidsFromSystem(&kitPids);
for (auto itProc = kitPids.begin(); itProc != kitPids.end(); itProc ++)
{
pid = *itProc;
if (internalKitPids.find(pid) == internalKitPids.end())
{
// Check if this is our kit process (forked from our ForKit process)
if (Util::getStatFromPid(pid, 3) == (size_t)_forKitPid)
mapKitsLost.insert(std::pair<pid_t, std::time_t>(pid, std::time(nullptr)));
}
else
mapKitsLost.erase(pid);
}
for (auto itLost = mapKitsLost.begin(); itLost != mapKitsLost.end();)
{
if (std::time(nullptr) - itLost->second > (time_t)gracePeriod)
{
pid = itLost->first;
if (::kill(pid, 0) == 0)
{
if (::kill(pid, SIGKILL) == -1)
LOG_ERR("Detected lost kit [" << pid << "]. Failed to send SIGKILL.");
else
{
lostKitsTerminated ++;
LOG_ERR("Detected lost kit [" << pid << "]. Sent SIGKILL for termination.");
}
}
itLost = mapKitsLost.erase(itLost);
}
else
itLost ++;
}
if (lostKitsTerminated)
Admin::instance().addLostKitsTerminated(lostKitsTerminated);
}
void Admin::dumpState(std::ostream& os)
{
// FIXME: be more helpful ...
SocketPoll::dumpState(os);
}
class MonitorSocketHandler : public AdminSocketHandler
{
bool _connecting;
std::string _uri;
public:
MonitorSocketHandler(Admin *admin, const std::string &uri) :
AdminSocketHandler(admin),
_connecting(true),
_uri(uri)
{
}
int getPollEvents(std::chrono::steady_clock::time_point now,
int64_t &timeoutMaxMicroS) override
{
if (_connecting)
{
LOG_TRC("Waiting for outbound connection to complete");
return POLLOUT;
}
else
return AdminSocketHandler::getPollEvents(now, timeoutMaxMicroS);
}
void performWrites(std::size_t capacity) override
{
LOG_TRC("Outbound monitor - connected");
_connecting = false;
return AdminSocketHandler::performWrites(capacity);
}
void onDisconnect() override
{
LOG_ERR("Monitor " << _uri << " dis-connected, re-trying in 20 seconds");
Admin::instance().scheduleMonitorConnect(_uri, std::chrono::steady_clock::now() + std::chrono::seconds(20));
}
};
void Admin::connectToMonitorSync(const std::string &uri)
{
LOG_TRC("Add monitor " << uri);
auto handler = std::make_shared<MonitorSocketHandler>(this, uri);
insertNewWebSocketSync(Poco::URI(uri), handler);
AdminSocketHandler::subscribeAsync(handler);
}
void Admin::scheduleMonitorConnect(const std::string &uri, std::chrono::steady_clock::time_point when)
{
assertCorrectThread();
MonitorConnectRecord todo;
todo.setWhen(when);
todo.setUri(uri);
_pendingConnects.push_back(todo);
}
void Admin::getMetrics(std::ostringstream &metrics)
{
size_t memAvail = getTotalAvailableMemory();
size_t memUsed = getTotalMemoryUsage();
metrics << "global_host_system_memory_bytes " << _totalSysMemKb * 1024 << std::endl;
metrics << "global_memory_available_bytes " << memAvail * 1024 << std::endl;
metrics << "global_memory_used_bytes " << memUsed * 1024 << std::endl;
metrics << "global_memory_free_bytes " << (memAvail - memUsed) * 1024 << std::endl;
metrics << std::endl;
_model.getMetrics(metrics);
}
void Admin::sendMetrics(const std::shared_ptr<StreamSocket>& socket, const std::shared_ptr<Poco::Net::HTTPResponse>& response)
{
std::ostringstream oss;
response->write(oss);
getMetrics(oss);
socket->send(oss.str());
socket->shutdown();
}
void Admin::start()
{
bool haveMonitors = false;
const auto& config = Application::instance().config();
for (size_t i = 0; ; ++i)
{
const std::string path = "monitors.monitor[" + std::to_string(i) + ']';
const std::string uri = config.getString(path, "");
if (!config.has(path))
break;
if (!uri.empty())
{
Poco::URI monitor(uri);
if (monitor.getScheme() == "wss" || monitor.getScheme() == "ws")
{
addCallback([=] { scheduleMonitorConnect(uri, std::chrono::steady_clock::now()); });
haveMonitors = true;
}
else
LOG_ERR("Unhandled monitor URI: '" << uri << "' should be \"wss://foo:1234/baa\"");
}
}
if (!haveMonitors)
LOG_TRC("No monitors configured.");
startThread();
}
void Admin::stop()
{
joinThread();
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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