mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-12 19:41:02 +00:00
1243 lines
40 KiB
C++
1243 lines
40 KiB
C++
#include <daemon/BaseDaemon.h>
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#include <Common/Config/ConfigProcessor.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/fcntl.h>
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#include <sys/time.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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#include <cxxabi.h>
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#include <execinfo.h>
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#if USE_UNWIND
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#define UNW_LOCAL_ONLY
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#include <libunwind.h>
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#endif
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#ifdef __APPLE__
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// ucontext is not available without _XOPEN_SOURCE
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#define _XOPEN_SOURCE
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#endif
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#include <ucontext.h>
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#include <typeinfo>
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#include <common/logger_useful.h>
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#include <common/ErrorHandlers.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <memory>
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#include <Poco/Observer.h>
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#include <Poco/Logger.h>
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#include <Poco/AutoPtr.h>
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#include <Poco/SplitterChannel.h>
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#include <Poco/Ext/LevelFilterChannel.h>
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#include <Poco/Ext/ThreadNumber.h>
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#include <Poco/FormattingChannel.h>
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#include <Poco/PatternFormatter.h>
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#include <Poco/ConsoleChannel.h>
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#include <Poco/TaskManager.h>
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#include <Poco/File.h>
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#include <Poco/Path.h>
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#include <Poco/Message.h>
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#include <Poco/Util/AbstractConfiguration.h>
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#include <Poco/Util/XMLConfiguration.h>
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#include <Poco/Util/MapConfiguration.h>
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#include <Poco/Util/Application.h>
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#include <Poco/Exception.h>
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#include <Poco/ErrorHandler.h>
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#include <Poco/NumberFormatter.h>
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#include <Poco/Condition.h>
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#include <Poco/SyslogChannel.h>
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#include <Common/Exception.h>
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#include <IO/WriteBufferFromFileDescriptor.h>
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#include <IO/ReadBufferFromFileDescriptor.h>
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#include <IO/ReadHelpers.h>
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#include <IO/WriteHelpers.h>
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#include <Common/getMultipleKeysFromConfig.h>
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#include <Common/ClickHouseRevision.h>
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#include <Common/config_version.h>
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#include <daemon/OwnPatternFormatter.h>
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#include <Poco/Net/RemoteSyslogChannel.h>
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using Poco::Logger;
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using Poco::AutoPtr;
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using Poco::Observer;
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using Poco::FormattingChannel;
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using Poco::SplitterChannel;
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using Poco::ConsoleChannel;
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using Poco::FileChannel;
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using Poco::Path;
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using Poco::Message;
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using Poco::Util::AbstractConfiguration;
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constexpr char BaseDaemon::DEFAULT_GRAPHITE_CONFIG_NAME[];
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/** For transferring information from signal handler to a separate thread.
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* If you need to do something serious in case of a signal (example: write a message to the log),
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* then sending information to a separate thread through pipe and doing all the stuff asynchronously
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* - is probably the only safe method for doing it.
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* (Because it's only safe to use reentrant functions in signal handlers.)
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*/
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struct Pipe
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{
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union
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{
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int fds[2];
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struct
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{
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int read_fd;
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int write_fd;
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};
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};
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Pipe()
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{
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read_fd = -1;
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write_fd = -1;
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if (0 != pipe(fds))
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DB::throwFromErrno("Cannot create pipe");
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}
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void close()
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{
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if (-1 != read_fd)
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{
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::close(read_fd);
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read_fd = -1;
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}
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if (-1 != write_fd)
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{
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::close(write_fd);
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write_fd = -1;
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}
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}
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~Pipe()
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{
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close();
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}
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};
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Pipe signal_pipe;
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/** Reset signal handler to the default and send signal to itself.
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* It's called from user signal handler to write core dump.
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*/
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static void call_default_signal_handler(int sig)
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{
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signal(sig, SIG_DFL);
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kill(getpid(), sig);
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}
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using ThreadNumber = decltype(Poco::ThreadNumber::get());
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static const size_t buf_size = sizeof(int) + sizeof(siginfo_t) + sizeof(ucontext_t) + sizeof(ThreadNumber);
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using signal_function = void(int, siginfo_t*, void*);
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static void writeSignalIDtoSignalPipe(int sig)
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{
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char buf[buf_size];
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DB::WriteBufferFromFileDescriptor out(signal_pipe.write_fd, buf_size, buf);
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DB::writeBinary(sig, out);
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out.next();
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}
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/** Signal handler for HUP / USR1 */
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static void closeLogsSignalHandler(int sig, siginfo_t * info, void * context)
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{
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writeSignalIDtoSignalPipe(sig);
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}
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static void terminateRequestedSignalHandler(int sig, siginfo_t * info, void * context)
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{
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writeSignalIDtoSignalPipe(sig);
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}
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thread_local bool already_signal_handled = false;
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/** Handler for "fault" signals. Send data about fault to separate thread to write into log.
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*/
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static void faultSignalHandler(int sig, siginfo_t * info, void * context)
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{
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if (already_signal_handled)
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return;
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already_signal_handled = true;
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char buf[buf_size];
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DB::WriteBufferFromFileDescriptor out(signal_pipe.write_fd, buf_size, buf);
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DB::writeBinary(sig, out);
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DB::writePODBinary(*info, out);
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DB::writePODBinary(*reinterpret_cast<const ucontext_t *>(context), out);
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DB::writeBinary(Poco::ThreadNumber::get(), out);
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out.next();
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/// The time that is usually enough for separate thread to print info into log.
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::sleep(10);
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call_default_signal_handler(sig);
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}
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static bool already_printed_stack_trace = false;
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#if USE_UNWIND
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size_t backtraceLibUnwind(void ** out_frames, size_t max_frames, ucontext_t & context)
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{
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if (already_printed_stack_trace)
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return 0;
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unw_cursor_t cursor;
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if (unw_init_local2(&cursor, &context, UNW_INIT_SIGNAL_FRAME) < 0)
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return 0;
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size_t i = 0;
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for (; i < max_frames; ++i)
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{
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unw_word_t ip;
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unw_get_reg(&cursor, UNW_REG_IP, &ip);
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out_frames[i] = reinterpret_cast<void*>(ip);
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/// NOTE This triggers "AddressSanitizer: stack-buffer-overflow". Looks like false positive.
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/// It's Ok, because we use this method if the program is crashed nevertheless.
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if (!unw_step(&cursor))
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break;
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}
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return i;
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}
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#endif
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/** The thread that read info about signal or std::terminate from pipe.
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* On HUP / USR1, close log files (for new files to be opened later).
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* On information about std::terminate, write it to log.
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* On other signals, write info to log.
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*/
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class SignalListener : public Poco::Runnable
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{
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public:
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enum Signals : int
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{
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StdTerminate = -1,
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StopThread = -2
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};
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explicit SignalListener(BaseDaemon & daemon_)
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: log(&Logger::get("BaseDaemon"))
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, daemon(daemon_)
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{
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}
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void run()
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{
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char buf[buf_size];
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DB::ReadBufferFromFileDescriptor in(signal_pipe.read_fd, buf_size, buf);
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while (!in.eof())
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{
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int sig = 0;
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DB::readBinary(sig, in);
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if (sig == Signals::StopThread)
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{
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LOG_INFO(log, "Stop SignalListener thread");
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break;
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}
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else if (sig == SIGHUP || sig == SIGUSR1)
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{
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LOG_DEBUG(log, "Received signal to close logs.");
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BaseDaemon::instance().closeLogs();
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LOG_INFO(log, "Opened new log file after received signal.");
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}
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else if (sig == Signals::StdTerminate)
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{
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ThreadNumber thread_num;
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std::string message;
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DB::readBinary(thread_num, in);
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DB::readBinary(message, in);
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onTerminate(message, thread_num);
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}
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else if (sig == SIGINT ||
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sig == SIGQUIT ||
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sig == SIGTERM)
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{
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daemon.handleSignal(sig);
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}
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else
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{
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siginfo_t info;
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ucontext_t context;
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ThreadNumber thread_num;
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DB::readPODBinary(info, in);
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DB::readPODBinary(context, in);
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DB::readBinary(thread_num, in);
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onFault(sig, info, context, thread_num);
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}
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}
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}
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private:
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Logger * log;
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BaseDaemon & daemon;
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private:
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void onTerminate(const std::string & message, ThreadNumber thread_num) const
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{
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LOG_ERROR(log, "(from thread " << thread_num << ") " << message);
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}
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void onFault(int sig, siginfo_t & info, ucontext_t & context, ThreadNumber thread_num) const
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{
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LOG_ERROR(log, "########################################");
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LOG_ERROR(log, "(from thread " << thread_num << ") "
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<< "Received signal " << strsignal(sig) << " (" << sig << ")" << ".");
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void * caller_address = nullptr;
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#if defined(__x86_64__)
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/// Get the address at the time the signal was raised from the RIP (x86-64)
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#if defined(__FreeBSD__)
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caller_address = reinterpret_cast<void *>(context.uc_mcontext.mc_rip);
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#elif defined(__APPLE__)
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caller_address = reinterpret_cast<void *>(context.uc_mcontext->__ss.__rip);
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#else
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caller_address = reinterpret_cast<void *>(context.uc_mcontext.gregs[REG_RIP]);
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auto err_mask = context.uc_mcontext.gregs[REG_ERR];
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#endif
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#elif defined(__aarch64__)
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caller_address = reinterpret_cast<void *>(context.uc_mcontext.pc);
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#endif
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switch (sig)
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{
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case SIGSEGV:
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{
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/// Print info about address and reason.
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if (nullptr == info.si_addr)
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LOG_ERROR(log, "Address: NULL pointer.");
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else
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LOG_ERROR(log, "Address: " << info.si_addr);
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#if defined(__x86_64__) && !defined(__FreeBSD__) && !defined(__APPLE__)
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if ((err_mask & 0x02))
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LOG_ERROR(log, "Access: write.");
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else
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LOG_ERROR(log, "Access: read.");
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#endif
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switch (info.si_code)
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{
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case SEGV_ACCERR:
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LOG_ERROR(log, "Attempted access has violated the permissions assigned to the memory area.");
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break;
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case SEGV_MAPERR:
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LOG_ERROR(log, "Address not mapped to object.");
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break;
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default:
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LOG_ERROR(log, "Unknown si_code.");
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break;
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}
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break;
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}
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case SIGBUS:
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{
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switch (info.si_code)
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{
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case BUS_ADRALN:
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LOG_ERROR(log, "Invalid address alignment.");
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break;
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case BUS_ADRERR:
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LOG_ERROR(log, "Non-existant physical address.");
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break;
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case BUS_OBJERR:
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LOG_ERROR(log, "Object specific hardware error.");
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break;
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// Linux specific
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#if defined(BUS_MCEERR_AR)
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case BUS_MCEERR_AR:
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LOG_ERROR(log, "Hardware memory error: action required.");
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break;
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#endif
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#if defined(BUS_MCEERR_AO)
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case BUS_MCEERR_AO:
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LOG_ERROR(log, "Hardware memory error: action optional.");
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break;
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#endif
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default:
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LOG_ERROR(log, "Unknown si_code.");
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break;
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}
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break;
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}
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case SIGILL:
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{
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switch (info.si_code)
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{
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case ILL_ILLOPC:
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LOG_ERROR(log, "Illegal opcode.");
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break;
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case ILL_ILLOPN:
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LOG_ERROR(log, "Illegal operand.");
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break;
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case ILL_ILLADR:
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LOG_ERROR(log, "Illegal addressing mode.");
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break;
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case ILL_ILLTRP:
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LOG_ERROR(log, "Illegal trap.");
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break;
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case ILL_PRVOPC:
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LOG_ERROR(log, "Privileged opcode.");
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break;
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case ILL_PRVREG:
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LOG_ERROR(log, "Privileged register.");
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break;
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case ILL_COPROC:
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LOG_ERROR(log, "Coprocessor error.");
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break;
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case ILL_BADSTK:
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LOG_ERROR(log, "Internal stack error.");
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break;
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default:
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LOG_ERROR(log, "Unknown si_code.");
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break;
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}
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break;
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}
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case SIGFPE:
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{
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switch (info.si_code)
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{
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case FPE_INTDIV:
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LOG_ERROR(log, "Integer divide by zero.");
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break;
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case FPE_INTOVF:
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LOG_ERROR(log, "Integer overflow.");
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break;
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case FPE_FLTDIV:
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LOG_ERROR(log, "Floating point divide by zero.");
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break;
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case FPE_FLTOVF:
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LOG_ERROR(log, "Floating point overflow.");
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break;
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case FPE_FLTUND:
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LOG_ERROR(log, "Floating point underflow.");
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break;
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case FPE_FLTRES:
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LOG_ERROR(log, "Floating point inexact result.");
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break;
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case FPE_FLTINV:
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LOG_ERROR(log, "Floating point invalid operation.");
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break;
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case FPE_FLTSUB:
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LOG_ERROR(log, "Subscript out of range.");
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break;
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default:
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LOG_ERROR(log, "Unknown si_code.");
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break;
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}
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break;
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}
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}
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if (already_printed_stack_trace)
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return;
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static const int max_frames = 50;
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void * frames[max_frames];
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#if USE_UNWIND
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int frames_size = backtraceLibUnwind(frames, max_frames, context);
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if (frames_size)
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{
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#else
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/// No libunwind means no backtrace, because we are in a different thread from the one where the signal happened.
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/// So at least print the function where the signal happened.
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if (caller_address)
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{
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frames[0] = caller_address;
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int frames_size = 1;
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#endif
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char ** symbols = backtrace_symbols(frames, frames_size);
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if (!symbols)
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{
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if (caller_address)
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LOG_ERROR(log, "Caller address: " << caller_address);
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}
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else
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{
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for (int i = 0; i < frames_size; ++i)
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{
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/// Perform demangling of names. Name is in parentheses, before '+' character.
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char * name_start = nullptr;
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char * name_end = nullptr;
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char * demangled_name = nullptr;
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int status = 0;
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if (nullptr != (name_start = strchr(symbols[i], '('))
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&& nullptr != (name_end = strchr(name_start, '+')))
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{
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++name_start;
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*name_end = '\0';
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demangled_name = abi::__cxa_demangle(name_start, 0, 0, &status);
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*name_end = '+';
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}
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std::stringstream res;
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res << i << ". ";
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if (nullptr != demangled_name && 0 == status)
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{
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res.write(symbols[i], name_start - symbols[i]);
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res << demangled_name << name_end;
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}
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else
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res << symbols[i];
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LOG_ERROR(log, res.rdbuf());
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}
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}
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}
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}
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};
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/** To use with std::set_terminate.
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* Collects slightly more info than __gnu_cxx::__verbose_terminate_handler,
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* and send it to pipe. Other thread will read this info from pipe and asynchronously write it to log.
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* Look at libstdc++-v3/libsupc++/vterminate.cc for example.
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*/
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static void terminate_handler()
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{
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static thread_local bool terminating = false;
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if (terminating)
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{
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abort();
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return; /// Just for convenience.
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}
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terminating = true;
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std::stringstream log;
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std::type_info * t = abi::__cxa_current_exception_type();
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if (t)
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{
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/// Note that "name" is the mangled name.
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char const * name = t->name();
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{
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int status = -1;
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char * dem = 0;
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dem = abi::__cxa_demangle(name, 0, 0, &status);
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log << "Terminate called after throwing an instance of " << (status == 0 ? dem : name) << std::endl;
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|
|
if (status == 0)
|
|
free(dem);
|
|
}
|
|
|
|
already_printed_stack_trace = true;
|
|
|
|
/// If the exception is derived from std::exception, we can give more information.
|
|
try
|
|
{
|
|
throw;
|
|
}
|
|
catch (DB::Exception & e)
|
|
{
|
|
log << "Code: " << e.code() << ", e.displayText() = " << e.displayText() << ", e.what() = " << e.what() << std::endl;
|
|
}
|
|
catch (Poco::Exception & e)
|
|
{
|
|
log << "Code: " << e.code() << ", e.displayText() = " << e.displayText() << ", e.what() = " << e.what() << std::endl;
|
|
}
|
|
catch (const std::exception & e)
|
|
{
|
|
log << "what(): " << e.what() << std::endl;
|
|
}
|
|
catch (...)
|
|
{
|
|
}
|
|
|
|
log << "Stack trace:\n\n" << StackTrace().toString() << std::endl;
|
|
}
|
|
else
|
|
{
|
|
log << "Terminate called without an active exception" << std::endl;
|
|
}
|
|
|
|
static const size_t buf_size = 1024;
|
|
|
|
std::string log_message = log.str();
|
|
if (log_message.size() > buf_size - 16)
|
|
log_message.resize(buf_size - 16);
|
|
|
|
char buf[buf_size];
|
|
DB::WriteBufferFromFileDescriptor out(signal_pipe.write_fd, buf_size, buf);
|
|
|
|
DB::writeBinary(static_cast<int>(SignalListener::StdTerminate), out);
|
|
DB::writeBinary(Poco::ThreadNumber::get(), out);
|
|
DB::writeBinary(log_message, out);
|
|
out.next();
|
|
|
|
abort();
|
|
}
|
|
|
|
|
|
static std::string createDirectory(const std::string & file)
|
|
{
|
|
auto path = Poco::Path(file).makeParent();
|
|
if (path.toString().empty())
|
|
return "";
|
|
Poco::File(path).createDirectories();
|
|
return path.toString();
|
|
};
|
|
|
|
static bool tryCreateDirectories(Poco::Logger * logger, const std::string & path)
|
|
{
|
|
try
|
|
{
|
|
Poco::File(path).createDirectories();
|
|
return true;
|
|
}
|
|
catch (...)
|
|
{
|
|
LOG_WARNING(logger, __PRETTY_FUNCTION__ << ": when creating " << path << ", " << DB::getCurrentExceptionMessage(true));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
void BaseDaemon::reloadConfiguration()
|
|
{
|
|
/** If the program is not run in daemon mode and 'config-file' is not specified,
|
|
* then we use config from 'config.xml' file in current directory,
|
|
* but will log to console (or use parameters --log-file, --errorlog-file from command line)
|
|
* instead of using files specified in config.xml.
|
|
* (It's convenient to log in console when you start server without any command line parameters.)
|
|
*/
|
|
config_path = config().getString("config-file", "config.xml");
|
|
loaded_config = ConfigProcessor(config_path, false, true).loadConfig(/* allow_zk_includes = */ true);
|
|
if (last_configuration != nullptr)
|
|
config().removeConfiguration(last_configuration);
|
|
last_configuration = loaded_config.configuration.duplicate();
|
|
config().add(last_configuration, PRIO_DEFAULT, false);
|
|
}
|
|
|
|
|
|
/// For creating and destroying unique_ptr of incomplete type.
|
|
BaseDaemon::BaseDaemon() = default;
|
|
|
|
|
|
BaseDaemon::~BaseDaemon()
|
|
{
|
|
writeSignalIDtoSignalPipe(SignalListener::StopThread);
|
|
signal_listener_thread.join();
|
|
signal_pipe.close();
|
|
}
|
|
|
|
|
|
void BaseDaemon::terminate()
|
|
{
|
|
getTaskManager().cancelAll();
|
|
if (::kill(Poco::Process::id(), SIGTERM) != 0)
|
|
{
|
|
throw Poco::SystemException("cannot terminate process");
|
|
}
|
|
}
|
|
|
|
void BaseDaemon::kill()
|
|
{
|
|
pid.clear();
|
|
Poco::Process::kill(getpid());
|
|
}
|
|
|
|
void BaseDaemon::sleep(double seconds)
|
|
{
|
|
wakeup_event.reset();
|
|
wakeup_event.tryWait(seconds * 1000);
|
|
}
|
|
|
|
void BaseDaemon::wakeup()
|
|
{
|
|
wakeup_event.set();
|
|
}
|
|
|
|
|
|
void BaseDaemon::buildLoggers(Poco::Util::AbstractConfiguration & config)
|
|
{
|
|
auto current_logger = config.getString("logger");
|
|
if (config_logger == current_logger)
|
|
return;
|
|
config_logger = current_logger;
|
|
|
|
bool is_daemon = config.getBool("application.runAsDaemon", false);
|
|
|
|
// Split log and error log.
|
|
Poco::AutoPtr<SplitterChannel> split = new SplitterChannel;
|
|
|
|
auto log_level = config.getString("logger.level", "trace");
|
|
const auto log_path = config.getString("logger.log", "");
|
|
if (!log_path.empty())
|
|
{
|
|
createDirectory(log_path);
|
|
std::cerr << "Logging " << log_level << " to " << log_path << std::endl;
|
|
|
|
// Set up two channel chains.
|
|
Poco::AutoPtr<OwnPatternFormatter> pf = new OwnPatternFormatter(this);
|
|
pf->setProperty("times", "local");
|
|
Poco::AutoPtr<FormattingChannel> log = new FormattingChannel(pf);
|
|
log_file = new FileChannel;
|
|
log_file->setProperty(Poco::FileChannel::PROP_PATH, Poco::Path(log_path).absolute().toString());
|
|
log_file->setProperty(Poco::FileChannel::PROP_ROTATION, config.getRawString("logger.size", "100M"));
|
|
log_file->setProperty(Poco::FileChannel::PROP_ARCHIVE, "number");
|
|
log_file->setProperty(Poco::FileChannel::PROP_COMPRESS, config.getRawString("logger.compress", "true"));
|
|
log_file->setProperty(Poco::FileChannel::PROP_PURGECOUNT, config.getRawString("logger.count", "1"));
|
|
log_file->setProperty(Poco::FileChannel::PROP_FLUSH, config.getRawString("logger.flush", "true"));
|
|
log_file->setProperty(Poco::FileChannel::PROP_ROTATEONOPEN, config.getRawString("logger.rotateOnOpen", "false"));
|
|
log->setChannel(log_file);
|
|
split->addChannel(log);
|
|
log_file->open();
|
|
}
|
|
|
|
const auto errorlog_path = config.getString("logger.errorlog", "");
|
|
if (!errorlog_path.empty())
|
|
{
|
|
createDirectory(errorlog_path);
|
|
std::cerr << "Logging errors to " << errorlog_path << std::endl;
|
|
Poco::AutoPtr<Poco::LevelFilterChannel> level = new Poco::LevelFilterChannel;
|
|
level->setLevel(Message::PRIO_NOTICE);
|
|
Poco::AutoPtr<OwnPatternFormatter> pf = new OwnPatternFormatter(this);
|
|
pf->setProperty("times", "local");
|
|
Poco::AutoPtr<FormattingChannel> errorlog = new FormattingChannel(pf);
|
|
error_log_file = new FileChannel;
|
|
error_log_file->setProperty(Poco::FileChannel::PROP_PATH, Poco::Path(errorlog_path).absolute().toString());
|
|
error_log_file->setProperty(Poco::FileChannel::PROP_ROTATION, config.getRawString("logger.size", "100M"));
|
|
error_log_file->setProperty(Poco::FileChannel::PROP_ARCHIVE, "number");
|
|
error_log_file->setProperty(Poco::FileChannel::PROP_COMPRESS, config.getRawString("logger.compress", "true"));
|
|
error_log_file->setProperty(Poco::FileChannel::PROP_PURGECOUNT, config.getRawString("logger.count", "1"));
|
|
error_log_file->setProperty(Poco::FileChannel::PROP_FLUSH, config.getRawString("logger.flush", "true"));
|
|
error_log_file->setProperty(Poco::FileChannel::PROP_ROTATEONOPEN, config.getRawString("logger.rotateOnOpen", "false"));
|
|
errorlog->setChannel(error_log_file);
|
|
level->setChannel(errorlog);
|
|
split->addChannel(level);
|
|
errorlog->open();
|
|
}
|
|
|
|
/// "dynamic_layer_selection" is needed only for Yandex.Metrika, that share part of ClickHouse code.
|
|
/// We don't need this configuration parameter.
|
|
|
|
if (config.getBool("logger.use_syslog", false) || config.getBool("dynamic_layer_selection", false))
|
|
{
|
|
Poco::AutoPtr<OwnPatternFormatter> pf = new OwnPatternFormatter(this, OwnPatternFormatter::ADD_LAYER_TAG);
|
|
pf->setProperty("times", "local");
|
|
Poco::AutoPtr<FormattingChannel> log = new FormattingChannel(pf);
|
|
|
|
const std::string & cmd_name = commandName();
|
|
|
|
if (config.has("logger.syslog.address"))
|
|
{
|
|
syslog_channel = new Poco::Net::RemoteSyslogChannel();
|
|
// syslog address
|
|
syslog_channel->setProperty(Poco::Net::RemoteSyslogChannel::PROP_LOGHOST, config.getString("logger.syslog.address"));
|
|
if (config.has("logger.syslog.hostname"))
|
|
{
|
|
syslog_channel->setProperty(Poco::Net::RemoteSyslogChannel::PROP_HOST, config.getString("logger.syslog.hostname"));
|
|
}
|
|
syslog_channel->setProperty(Poco::Net::RemoteSyslogChannel::PROP_FORMAT, config.getString("logger.syslog.format", "syslog"));
|
|
syslog_channel->setProperty(Poco::Net::RemoteSyslogChannel::PROP_FACILITY, config.getString("logger.syslog.facility", "LOG_USER"));
|
|
}
|
|
else
|
|
{
|
|
syslog_channel = new Poco::SyslogChannel();
|
|
syslog_channel->setProperty(Poco::SyslogChannel::PROP_NAME, cmd_name);
|
|
syslog_channel->setProperty(Poco::SyslogChannel::PROP_OPTIONS, config.getString("logger.syslog.options", "LOG_CONS|LOG_PID"));
|
|
syslog_channel->setProperty(Poco::SyslogChannel::PROP_FACILITY, config.getString("logger.syslog.facility", "LOG_DAEMON"));
|
|
}
|
|
|
|
log->setChannel(syslog_channel);
|
|
split->addChannel(log);
|
|
syslog_channel->open();
|
|
}
|
|
|
|
if (config.getBool("logger.console", false) || (!config.hasProperty("logger.console") && !is_daemon && (isatty(STDIN_FILENO) || isatty(STDERR_FILENO))))
|
|
{
|
|
Poco::AutoPtr<ConsoleChannel> file = new ConsoleChannel;
|
|
Poco::AutoPtr<OwnPatternFormatter> pf = new OwnPatternFormatter(this);
|
|
pf->setProperty("times", "local");
|
|
Poco::AutoPtr<FormattingChannel> log = new FormattingChannel(pf);
|
|
log->setChannel(file);
|
|
logger().warning("Logging " + log_level + " to console");
|
|
split->addChannel(log);
|
|
}
|
|
|
|
split->open();
|
|
logger().close();
|
|
logger().setChannel(split);
|
|
|
|
// Global logging level (it can be overridden for specific loggers).
|
|
logger().setLevel(log_level);
|
|
|
|
// Set level to all already created loggers
|
|
std::vector <std::string> names;
|
|
Logger::root().names(names);
|
|
for (const auto & name : names)
|
|
Logger::root().get(name).setLevel(log_level);
|
|
|
|
// Attach to the root logger.
|
|
Logger::root().setLevel(log_level);
|
|
Logger::root().setChannel(logger().getChannel());
|
|
|
|
// Explicitly specified log levels for specific loggers.
|
|
AbstractConfiguration::Keys levels;
|
|
config.keys("logger.levels", levels);
|
|
|
|
if(!levels.empty())
|
|
for(AbstractConfiguration::Keys::iterator it = levels.begin(); it != levels.end(); ++it)
|
|
Logger::get(*it).setLevel(config.getString("logger.levels." + *it, "trace"));
|
|
}
|
|
|
|
|
|
void BaseDaemon::closeLogs()
|
|
{
|
|
if (log_file)
|
|
log_file->close();
|
|
if (error_log_file)
|
|
error_log_file->close();
|
|
|
|
if (!log_file)
|
|
logger().warning("Logging to console but received signal to close log file (ignoring).");
|
|
}
|
|
|
|
std::string BaseDaemon::getDefaultCorePath() const
|
|
{
|
|
return "/opt/cores/";
|
|
}
|
|
|
|
void BaseDaemon::initialize(Application & self)
|
|
{
|
|
task_manager.reset(new Poco::TaskManager);
|
|
ServerApplication::initialize(self);
|
|
|
|
{
|
|
/// Parsing all args and converting to config layer
|
|
/// Test: -- --1=1 --1=2 --3 5 7 8 -9 10 -11=12 14= 15== --16==17 --=18 --19= --20 21 22 --23 --24 25 --26 -27 28 ---29=30 -- ----31 32 --33 3-4
|
|
Poco::AutoPtr<Poco::Util::MapConfiguration> map_config = new Poco::Util::MapConfiguration;
|
|
std::string key;
|
|
for(auto & arg : argv())
|
|
{
|
|
auto key_start = arg.find_first_not_of('-');
|
|
auto pos_minus = arg.find('-');
|
|
auto pos_eq = arg.find('=');
|
|
|
|
// old saved '--key', will set to some true value "1"
|
|
if (!key.empty() && pos_minus != std::string::npos && pos_minus < key_start)
|
|
{
|
|
map_config->setString(key, "1");
|
|
key = "";
|
|
}
|
|
|
|
if (pos_eq == std::string::npos)
|
|
{
|
|
if (!key.empty())
|
|
{
|
|
if (pos_minus == std::string::npos || pos_minus > key_start)
|
|
{
|
|
map_config->setString(key, arg);
|
|
}
|
|
key = "";
|
|
}
|
|
if (pos_minus != std::string::npos && key_start != std::string::npos && pos_minus < key_start)
|
|
key = arg.substr(key_start);
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
key = "";
|
|
}
|
|
|
|
if (key_start == std::string::npos)
|
|
continue;
|
|
|
|
if (pos_minus > key_start)
|
|
continue;
|
|
|
|
key = arg.substr(key_start, pos_eq - key_start);
|
|
if (key.empty())
|
|
continue;
|
|
std::string value;
|
|
if (arg.size() > pos_eq)
|
|
value = arg.substr(pos_eq+1);
|
|
|
|
map_config->setString(key, value);
|
|
key = "";
|
|
}
|
|
/// now highest priority (lowest value) is PRIO_APPLICATION = -100, we want higher!
|
|
config().add(map_config, PRIO_APPLICATION - 100);
|
|
}
|
|
|
|
bool is_daemon = config().getBool("application.runAsDaemon", false);
|
|
|
|
if (is_daemon)
|
|
{
|
|
/** When creating pid file and looking for config, will search for paths relative to the working path of the program when started.
|
|
*/
|
|
std::string path = Poco::Path(config().getString("application.path")).setFileName("").toString();
|
|
if (0 != chdir(path.c_str()))
|
|
throw Poco::Exception("Cannot change directory to " + path);
|
|
}
|
|
|
|
reloadConfiguration();
|
|
|
|
/// This must be done before creation of any files (including logs).
|
|
if (config().has("umask"))
|
|
{
|
|
std::string umask_str = config().getString("umask");
|
|
mode_t umask_num = 0;
|
|
std::stringstream stream;
|
|
stream << umask_str;
|
|
stream >> std::oct >> umask_num;
|
|
|
|
umask(umask_num);
|
|
}
|
|
|
|
ConfigProcessor(config_path).savePreprocessedConfig(loaded_config);
|
|
|
|
/// Write core dump on crash.
|
|
{
|
|
struct rlimit rlim;
|
|
if (getrlimit(RLIMIT_CORE, &rlim))
|
|
throw Poco::Exception("Cannot getrlimit");
|
|
/// 1 GiB by default. If more - it writes to disk too long.
|
|
rlim.rlim_cur = config().getUInt64("core_dump.size_limit", 1024 * 1024 * 1024);
|
|
|
|
if (setrlimit(RLIMIT_CORE, &rlim))
|
|
{
|
|
std::string message = "Cannot set max size of core file to " + std::to_string(rlim.rlim_cur);
|
|
#if !defined(ADDRESS_SANITIZER) && !defined(THREAD_SANITIZER) && !defined(MEMORY_SANITIZER) && !defined(SANITIZER)
|
|
throw Poco::Exception(message);
|
|
#else
|
|
/// It doesn't work under address/thread sanitizer. http://lists.llvm.org/pipermail/llvm-bugs/2013-April/027880.html
|
|
std::cerr << message << std::endl;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/// This must be done before any usage of DateLUT. In particular, before any logging.
|
|
if (config().has("timezone"))
|
|
{
|
|
if (0 != setenv("TZ", config().getString("timezone").data(), 1))
|
|
throw Poco::Exception("Cannot setenv TZ variable");
|
|
|
|
tzset();
|
|
}
|
|
|
|
std::string log_path = config().getString("logger.log", "");
|
|
if (!log_path.empty())
|
|
log_path = Poco::Path(log_path).setFileName("").toString();
|
|
|
|
/** Redirect stdout, stderr to separate files in the log directory (or in the specified file).
|
|
* Some libraries write to stderr in case of errors in debug mode,
|
|
* and this output makes sense even if the program is run in daemon mode.
|
|
* We have to do it before buildLoggers, for errors on logger initialization will be written to these files.
|
|
* If logger.stderr is specified then stderr will be forcibly redirected to that file.
|
|
*/
|
|
if ((!log_path.empty() && is_daemon) || config().has("logger.stderr"))
|
|
{
|
|
std::string stderr_path = config().getString("logger.stderr", log_path + "/stderr");
|
|
if (!freopen(stderr_path.c_str(), "a+", stderr))
|
|
throw Poco::OpenFileException("Cannot attach stderr to " + stderr_path);
|
|
}
|
|
|
|
if ((!log_path.empty() && is_daemon) || config().has("logger.stdout"))
|
|
{
|
|
std::string stdout_path = config().getString("logger.stdout", log_path + "/stdout");
|
|
if (!freopen(stdout_path.c_str(), "a+", stdout))
|
|
throw Poco::OpenFileException("Cannot attach stdout to " + stdout_path);
|
|
}
|
|
|
|
/// Create pid file.
|
|
if (is_daemon && config().has("pid"))
|
|
pid.seed(config().getString("pid"));
|
|
|
|
/// Change path for logging.
|
|
if (!log_path.empty())
|
|
{
|
|
std::string path = createDirectory(log_path);
|
|
if (is_daemon
|
|
&& chdir(path.c_str()) != 0)
|
|
throw Poco::Exception("Cannot change directory to " + path);
|
|
}
|
|
else
|
|
{
|
|
if (is_daemon
|
|
&& chdir("/tmp") != 0)
|
|
throw Poco::Exception("Cannot change directory to /tmp");
|
|
}
|
|
|
|
buildLoggers(config());
|
|
|
|
if (is_daemon)
|
|
{
|
|
/** Change working directory to the directory to write core dumps.
|
|
* We have to do it after buildLoggers, because there is the case when config files was in current directory.
|
|
*/
|
|
|
|
std::string core_path = config().getString("core_path", "");
|
|
if (core_path.empty())
|
|
core_path = getDefaultCorePath();
|
|
|
|
tryCreateDirectories(&logger(), core_path);
|
|
|
|
Poco::File cores = core_path;
|
|
if (!(cores.exists() && cores.isDirectory()))
|
|
{
|
|
core_path = !log_path.empty() ? log_path : "/opt/";
|
|
tryCreateDirectories(&logger(), core_path);
|
|
}
|
|
|
|
if (0 != chdir(core_path.c_str()))
|
|
throw Poco::Exception("Cannot change directory to " + core_path);
|
|
}
|
|
|
|
std::set_terminate(terminate_handler);
|
|
|
|
/// We want to avoid SIGPIPE when working with sockets and pipes, and just handle return value/errno instead.
|
|
{
|
|
sigset_t sig_set;
|
|
if (sigemptyset(&sig_set) || sigaddset(&sig_set, SIGPIPE) || pthread_sigmask(SIG_BLOCK, &sig_set, nullptr))
|
|
throw Poco::Exception("Cannot block signal.");
|
|
}
|
|
|
|
/// Setup signal handlers.
|
|
auto add_signal_handler =
|
|
[](const std::vector<int> & signals, signal_function handler)
|
|
{
|
|
struct sigaction sa;
|
|
memset(&sa, 0, sizeof(sa));
|
|
sa.sa_sigaction = handler;
|
|
sa.sa_flags = SA_SIGINFO;
|
|
|
|
{
|
|
if (sigemptyset(&sa.sa_mask))
|
|
throw Poco::Exception("Cannot set signal handler.");
|
|
|
|
for (auto signal : signals)
|
|
if (sigaddset(&sa.sa_mask, signal))
|
|
throw Poco::Exception("Cannot set signal handler.");
|
|
|
|
for (auto signal : signals)
|
|
if (sigaction(signal, &sa, 0))
|
|
throw Poco::Exception("Cannot set signal handler.");
|
|
}
|
|
};
|
|
|
|
add_signal_handler({SIGABRT, SIGSEGV, SIGILL, SIGBUS, SIGSYS, SIGFPE, SIGPIPE}, faultSignalHandler);
|
|
add_signal_handler({SIGHUP, SIGUSR1}, closeLogsSignalHandler);
|
|
add_signal_handler({SIGINT, SIGQUIT, SIGTERM}, terminateRequestedSignalHandler);
|
|
|
|
/// Set up Poco ErrorHandler for Poco Threads.
|
|
static KillingErrorHandler killing_error_handler;
|
|
Poco::ErrorHandler::set(&killing_error_handler);
|
|
|
|
logRevision();
|
|
|
|
signal_listener.reset(new SignalListener(*this));
|
|
signal_listener_thread.start(*signal_listener);
|
|
|
|
for (const auto & key : DB::getMultipleKeysFromConfig(config(), "", "graphite"))
|
|
{
|
|
graphite_writers.emplace(key, std::make_unique<GraphiteWriter>(key));
|
|
}
|
|
}
|
|
|
|
void BaseDaemon::logRevision() const
|
|
{
|
|
Logger::root().information("Starting " + std::string{VERSION_FULL} + " with revision " + Poco::NumberFormatter::format(ClickHouseRevision::get()));
|
|
}
|
|
|
|
/// Makes server shutdown if at least one Poco::Task have failed.
|
|
void BaseDaemon::exitOnTaskError()
|
|
{
|
|
Observer<BaseDaemon, Poco::TaskFailedNotification> obs(*this, &BaseDaemon::handleNotification);
|
|
getTaskManager().addObserver(obs);
|
|
}
|
|
|
|
/// Used for exitOnTaskError()
|
|
void BaseDaemon::handleNotification(Poco::TaskFailedNotification *_tfn)
|
|
{
|
|
task_failed = true;
|
|
AutoPtr<Poco::TaskFailedNotification> fn(_tfn);
|
|
Logger *lg = &(logger());
|
|
LOG_ERROR(lg, "Task '" << fn->task()->name() << "' failed. Daemon is shutting down. Reason - " << fn->reason().displayText());
|
|
ServerApplication::terminate();
|
|
}
|
|
|
|
void BaseDaemon::defineOptions(Poco::Util::OptionSet& _options)
|
|
{
|
|
Poco::Util::ServerApplication::defineOptions (_options);
|
|
|
|
_options.addOption(
|
|
Poco::Util::Option("config-file", "C", "load configuration from a given file")
|
|
.required(false)
|
|
.repeatable(false)
|
|
.argument("<file>")
|
|
.binding("config-file"));
|
|
|
|
_options.addOption(
|
|
Poco::Util::Option("log-file", "L", "use given log file")
|
|
.required(false)
|
|
.repeatable(false)
|
|
.argument("<file>")
|
|
.binding("logger.log"));
|
|
|
|
_options.addOption(
|
|
Poco::Util::Option("errorlog-file", "E", "use given log file for errors only")
|
|
.required(false)
|
|
.repeatable(false)
|
|
.argument("<file>")
|
|
.binding("logger.errorlog"));
|
|
|
|
_options.addOption(
|
|
Poco::Util::Option("pid-file", "P", "use given pidfile")
|
|
.required(false)
|
|
.repeatable(false)
|
|
.argument("<file>")
|
|
.binding("pid"));
|
|
}
|
|
|
|
bool isPidRunning(pid_t pid)
|
|
{
|
|
if (getpgid(pid) >= 0)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
void BaseDaemon::PID::seed(const std::string & file_)
|
|
{
|
|
file = Poco::Path(file_).absolute().toString();
|
|
Poco::File poco_file(file);
|
|
|
|
if (poco_file.exists())
|
|
{
|
|
pid_t pid_read = 0;
|
|
{
|
|
std::ifstream in(file);
|
|
if (in.good())
|
|
{
|
|
in >> pid_read;
|
|
if (pid_read && isPidRunning(pid_read))
|
|
throw Poco::Exception("Pid file exists and program running with pid = " + std::to_string(pid_read) + ", should not start daemon.");
|
|
}
|
|
}
|
|
std::cerr << "Old pid file exists (with pid = " << pid_read << "), removing." << std::endl;
|
|
poco_file.remove();
|
|
}
|
|
|
|
int fd = open(file.c_str(),
|
|
O_CREAT | O_EXCL | O_WRONLY,
|
|
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
|
|
|
|
if (-1 == fd)
|
|
{
|
|
file.clear();
|
|
if (EEXIST == errno)
|
|
throw Poco::Exception("Pid file exists, should not start daemon.");
|
|
throw Poco::CreateFileException("Cannot create pid file.");
|
|
}
|
|
|
|
try
|
|
{
|
|
std::stringstream s;
|
|
s << getpid();
|
|
if (static_cast<ssize_t>(s.str().size()) != write(fd, s.str().c_str(), s.str().size()))
|
|
throw Poco::Exception("Cannot write to pid file.");
|
|
}
|
|
catch (...)
|
|
{
|
|
close(fd);
|
|
throw;
|
|
}
|
|
|
|
close(fd);
|
|
}
|
|
|
|
void BaseDaemon::PID::clear()
|
|
{
|
|
if (!file.empty())
|
|
{
|
|
Poco::File(file).remove();
|
|
file.clear();
|
|
}
|
|
}
|
|
|
|
void BaseDaemon::handleSignal(int signal_id)
|
|
{
|
|
if (signal_id == SIGINT ||
|
|
signal_id == SIGQUIT ||
|
|
signal_id == SIGTERM)
|
|
{
|
|
std::unique_lock<std::mutex> lock(signal_handler_mutex);
|
|
{
|
|
++terminate_signals_counter;
|
|
sigint_signals_counter += signal_id == SIGINT;
|
|
signal_event.notify_all();
|
|
}
|
|
|
|
onInterruptSignals(signal_id);
|
|
}
|
|
else
|
|
throw DB::Exception(std::string("Unsupported signal: ") + strsignal(signal_id));
|
|
}
|
|
|
|
void BaseDaemon::onInterruptSignals(int signal_id)
|
|
{
|
|
is_cancelled = true;
|
|
LOG_INFO(&logger(), "Received termination signal (" << strsignal(signal_id) << ")");
|
|
|
|
if (sigint_signals_counter >= 2)
|
|
{
|
|
LOG_INFO(&logger(), "Received second signal Interrupt. Immediately terminate.");
|
|
kill();
|
|
}
|
|
}
|
|
|
|
|
|
void BaseDaemon::waitForTerminationRequest()
|
|
{
|
|
std::unique_lock<std::mutex> lock(signal_handler_mutex);
|
|
signal_event.wait(lock, [this](){ return terminate_signals_counter > 0; });
|
|
}
|
|
|