X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=libtest%2Fserver.cc;h=8b8b8f3e98776eef0a11a8fd18cd35280a9fbdcc;hb=1170b1b371ce7bdb50e8e7ae887687f5a45f81b9;hp=78c2a771895474d86c7958017951d63fba77d412;hpb=7abcaebdc4c3dd11b779eaef58a7371fb82ae888;p=awesomized%2Flibmemcached diff --git a/libtest/server.cc b/libtest/server.cc index 78c2a771..8b8b8f3e 100644 --- a/libtest/server.cc +++ b/libtest/server.cc @@ -1,95 +1,442 @@ /* vim:expandtab:shiftwidth=2:tabstop=2:smarttab: * - * Libmemcached library + * libtest * * Copyright (C) 2011 Data Differential, http://datadifferential.com/ - * Copyright (C) 2006-2009 Brian Aker All rights reserved. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 3 of the License, or (at your option) any later version. * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * - * * The names of its contributors may not be used to endorse or - * promote products derived from this software without specific prior - * written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ -#include + +#include + +#include +#include +#include #include +#include +#include +#include + +// trim from end +static inline std::string &rtrim(std::string &s) +{ + s.erase(std::find_if(s.rbegin(), s.rend(), std::not1(std::ptr_fun(std::isspace))).base(), s.end()); + return s; +} + #include +#include #include +extern "C" { + static bool exited_successfully(int status) + { + if (WEXITSTATUS(status) == 0) + { + return true; + } + + return true; + } +} -std::ostream& operator<<(std::ostream& output, const server_st &arg) + +namespace libtest { + +std::ostream& operator<<(std::ostream& output, const Server &arg) { if (arg.is_socket()) { - output << arg.hostname; + output << arg.hostname(); } else { - output << arg.hostname << ":" << arg.port(); + output << arg.hostname() << ":" << arg.port(); + } + + if (arg.has_pid()) + { + output << " Pid:" << arg.pid(); + } + + if (arg.has_socket()) + { + output << " Socket:" << arg.socket(); + } + + if (not arg.running().empty()) + { + output << " Exec:" << arg.running(); } + + return output; // for multiple << operators } -server_st::~server_st() +void Server::nap(void) +{ +#ifdef WIN32 + sleep(1); +#else + struct timespec global_sleep_value= { 0, 50000 }; + nanosleep(&global_sleep_value, NULL); +#endif +} + +Server::Server(const std::string& host_arg, const in_port_t port_arg, bool is_socket_arg) : + _is_socket(is_socket_arg), + _pid(-1), + _port(port_arg), + _hostname(host_arg) +{ +} + +Server::~Server() { - if (not _used) + if (has_pid() and not kill(_pid)) { - kill(); + Error << "Unable to kill:" << *this; } } -void server_st::reset_pid() +// If the server exists, kill it +bool Server::cycle() { - pid_file[0]= 0; - _pid= -1; + uint32_t limit= 3; + + // Try to ping, and kill the server #limit number of times + pid_t current_pid; + while (--limit and is_pid_valid(current_pid= get_pid())) + { + if (kill(current_pid)) + { + Log << "Killed existing server," << *this << " with pid:" << current_pid; + nap(); + continue; + } + } + + // For whatever reason we could not kill it, and we reached limit + if (limit == 0) + { + Error << "Reached limit, could not kill server pid:" << current_pid; + return false; + } + + return true; } -bool server_st::kill() +// Grab a one off command +bool Server::command(std::string& command_arg) { - if (not has_pid() and pid_file[0] == 0) + rebuild_base_command(); + + command_arg+= _base_command; + + if (args(command_arg)) { return true; } - - if (has_pid()) + + return false; +} + +bool Server::wait_for_pidfile() const +{ + Wait wait(pid_file(), 4); + + return wait.successful(); +} + +bool Server::start() +{ + // If we find that we already have a pid then kill it. + if (has_pid() and not kill(_pid)) + { + Error << "Could not kill() existing server during start() pid:" << _pid; + return false; + } + assert(not has_pid()); + + _running.clear(); + if (not command(_running)) + { + Error << "Could not build command()"; + return false; + } + + if (is_valgrind() or is_helgrind()) + { + _running+= " &"; + } + + int ret= system(_running.c_str()); + if (not exited_successfully(ret)) + { + Error << "system() failed:" << strerror(errno); + _running.clear(); + return false; + } + + if (is_helgrind() or is_valgrind()) + { + sleep(4); + } + + if (pid_file_option() and not pid_file().empty()) { - kill_pid(pid()); - if (pid_file[0]) + Wait wait(pid_file(), 8); + + if (not wait.successful()) { - unlink(pid_file); // If this happens we may be dealing with a dead server that left its pid file. + Error << "Unable to open pidfile for: " << _running; } - reset_pid(); + } - return true; + int count= is_helgrind() or is_valgrind() ? 20 : 5; + while (not ping() and --count) + { + nap(); + } + + if (count == 0) + { + // If we happen to have a pid file, lets try to kill it + if (pid_file_option() and not pid_file().empty()) + { + kill_file(pid_file()); + } + Error << "Failed to ping() server started with:" << _running; + _running.clear(); + return false; + } + + // A failing get_pid() at this point is considered an error + _pid= get_pid(true); + + return has_pid(); +} + +void Server::reset_pid() +{ + _running.clear(); + _pid_file.clear(); + _pid= -1; +} + +pid_t Server::pid() +{ + return _pid; +} + +bool Server::set_socket_file() +{ + char file_buffer[FILENAME_MAX]; + file_buffer[0]= 0; + + if (broken_pid_file()) + { + snprintf(file_buffer, sizeof(file_buffer), "/tmp/%s.socketXXXXXX", name()); + } + else + { + snprintf(file_buffer, sizeof(file_buffer), "var/run/%s.socketXXXXXX", name()); + } + + int fd; + if ((fd= mkstemp(file_buffer)) == -1) + { + perror(file_buffer); + return false; + } + close(fd); + unlink(file_buffer); + + _socket= file_buffer; + + return true; +} + +bool Server::set_pid_file() +{ + char file_buffer[FILENAME_MAX]; + file_buffer[0]= 0; + + if (broken_pid_file()) + { + snprintf(file_buffer, sizeof(file_buffer), "/tmp/%s.pidXXXXXX", name()); + } + else + { + snprintf(file_buffer, sizeof(file_buffer), "var/run/%s.pidXXXXXX", name()); + } + + int fd; + if ((fd= mkstemp(file_buffer)) == -1) + { + perror(file_buffer); + return false; + } + close(fd); + unlink(file_buffer); + + _pid_file= file_buffer; + + return true; +} + +bool Server::set_log_file() +{ + char file_buffer[FILENAME_MAX]; + file_buffer[0]= 0; + + snprintf(file_buffer, sizeof(file_buffer), "var/log/%s.logXXXXXX", name()); + int fd; + if ((fd= mkstemp(file_buffer)) == -1) + { + perror(file_buffer); + return false; + } + close(fd); + + _log_file= file_buffer; + + return true; +} + +void Server::rebuild_base_command() +{ + _base_command.clear(); + if (is_libtool()) + { + _base_command+= libtool(); + } + + if (is_debug() and getenv("GDB_COMMAND")) + { + _base_command+= getenv("GDB_COMMAND"); + _base_command+= " "; + } + else if (is_valgrind() and getenv("VALGRIND_COMMAND")) + { + _base_command+= getenv("VALGRIND_COMMAND"); + _base_command+= " "; + } + else if (is_helgrind() and getenv("HELGRIND_COMMAND")) + { + _base_command+= getenv("HELGRIND_COMMAND"); + _base_command+= " "; + } + + _base_command+= executable(); +} + +void Server::set_extra_args(const std::string &arg) +{ + _extra_args= arg; +} + +bool Server::args(std::string& options) +{ + std::stringstream arg_buffer; + + // Set a log file if it was requested (and we can) + if (getenv("LIBTEST_LOG") and log_file_option()) + { + if (not set_log_file()) + { + return false; + } + + arg_buffer << " " << log_file_option() << _log_file; + } + + // Update pid_file + if (pid_file_option()) + { + if (_pid_file.empty() and not set_pid_file()) + { + return false; + } + + arg_buffer << " " << pid_file_option() << pid_file(); + } + + assert(daemon_file_option()); + if (daemon_file_option() and not is_valgrind() and not is_helgrind()) + { + arg_buffer << " " << daemon_file_option(); + } + + if (_is_socket and socket_file_option()) + { + if (not set_socket_file()) + { + return false; + } + + arg_buffer << " " << socket_file_option() << "\"" << _socket << "\""; + } + + assert(port_option()); + if (port_option() and _port > 0) + { + arg_buffer << " " << port_option() << _port; } - else if (pid_file[0]) + + options+= arg_buffer.str(); + + if (not _extra_args.empty()) + { + options+= _extra_args; + } + + return true; +} + +bool Server::is_debug() const +{ + return bool(getenv("LIBTEST_MANUAL_GDB")); +} + +bool Server::is_valgrind() const +{ + return bool(getenv("LIBTEST_MANUAL_VALGRIND")); +} + +bool Server::is_helgrind() const +{ + return bool(getenv("LIBTEST_MANUAL_HELGRIND")); +} + +bool Server::kill(pid_t pid_arg) +{ + if (check_pid(pid_arg) and kill_pid(pid_arg)) // If we kill it, reset { - kill_file(pid_file); + if (broken_pid_file() and not pid_file().empty()) + { + unlink(pid_file().c_str()); + } + + if (broken_socket_cleanup() and has_socket() and not socket().empty()) + { + unlink(socket().c_str()); + } + reset_pid(); return true; @@ -97,3 +444,5 @@ bool server_st::kill() return false; } + +} // namespace libtest