boinc/sched/main.C

254 lines
7.3 KiB
C

// The contents of this file are subject to the BOINC Public License
// Version 1.0 (the "License"); you may not use this file except in
// compliance with the License. You may obtain a copy of the License at
// http://boinc.berkeley.edu/license_1.0.txt
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
// License for the specific language governing rights and limitations
// under the License.
//
// The Original Code is the Berkeley Open Infrastructure for Network Computing.
//
// The Initial Developer of the Original Code is the SETI@home project.
// Portions created by the SETI@home project are Copyright (C) 2002
// University of California at Berkeley. All Rights Reserved.
//
// Contributor(s):
//
// The BOINC scheduling server.
//
// command-line options:
#include <cassert>
#include <cstdio>
#include <vector>
#include <string>
using namespace std;
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "boinc_db.h"
#include "parse.h"
#include "filesys.h"
#include "error_numbers.h"
#include "shmem.h"
#include "util.h"
#include "sched_config.h"
#include "server_types.h"
#include "handle_request.h"
#include "sched_util.h"
#include "sched_msgs.h"
#include "main.h"
#ifdef _USING_FCGI_
#include "fcgi_stdio.h"
#endif
#define DEBUG_LEVEL 999
#define MAX_FCGI_COUNT 20
#define REQ_FILE_PREFIX "boinc_req_"
#define REPLY_FILE_PREFIX "boinc_reply_"
bool use_files = false; // use disk files for req/reply msgs (for debugging)
SCHED_CONFIG config;
GUI_URLS gui_urls;
key_t sema_key;
int g_pid;
void send_message(char* msg, int delay) {
printf(
"Content-type: text/plain\n\n"
"<scheduler_reply>\n"
" <message priority=\"low\">%s</message>\n"
" <request_delay>%d</request_delay>\n"
" <project_is_down/>\n"
"</scheduler_reply>\n",
msg, delay
);
}
static bool db_opened=false;
int open_database() {
int retval;
if (db_opened) return 0;
retval = boinc_db.open(config.db_name, config.db_host, config.db_user, config.db_passwd);
if (retval) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL, "can't open database\n");
return retval;
}
db_opened = true;
return 0;
}
int main() {
FILE* fin, *fout;
int i, retval;
char req_path[256], reply_path[256], path[256], buf[256];
SCHED_SHMEM* ssp=0;
void* p;
unsigned int counter=0;
char* code_sign_key;
bool project_stopped = false;
char *stderr_buffer;
#ifndef _USING_FCGI_
get_log_path(path, "cgi.log");
if (!freopen(path, "a", stderr)) {
fprintf(stderr, "Can't redirect stderr\n");
sprintf(buf, "Server can't open log file (%s)", path);
send_message(buf, 3600);
exit(0);
}
// install a larger buffer for stderr. This ensures that
// log information from different scheduler requests running
// in parallel don't collide in the log file and appear
// intermingled.
//
if (!(stderr_buffer=(char *)malloc(32768)) || setvbuf(stderr, stderr_buffer, _IOFBF, 32768)) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL,
"Unable to change stderr buffering preferences\n"
);
}
#endif
srand(time(0)+getpid());
log_messages.set_debug_level(DEBUG_LEVEL);
if (check_stop_sched()) {
send_message("Project is temporarily shut down for maintenance", 3600);
goto done;
}
retval = config.parse_file("..");
if (retval) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL, "Can't parse config file\n");
send_message("Server can't parse configuration file", 3600);
exit(0);
}
gui_urls.init();
sprintf(path, "%s/code_sign_public", config.key_dir);
retval = read_file_malloc(path, code_sign_key);
if (retval) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL,
"Can't read code sign key file (%s)\n", path
);
send_message("Server can't find key file", 3600);
exit(0);
}
get_project_dir(path, sizeof(path));
get_key(path, 'a', sema_key);
retval = attach_shmem(config.shmem_key, &p);
if (retval || p==0) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL,
"Can't attach shmem (feeder not running?)\n"
);
project_stopped = true;
} else {
ssp = (SCHED_SHMEM*)p;
retval = ssp->verify();
if (retval) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL,
"shmem has wrong struct sizes - recompile\n"
);
send_message("Server has software problem", 3600);
exit(0);
}
for (i=0; i<10; i++) {
if (ssp->ready) break;
log_messages.printf(SCHED_MSG_LOG::DEBUG, "waiting for ready flag\n");
sleep(1);
}
if (!ssp->ready) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL, "feeder doesn't seem to be running\n");
send_message("Server has software problem", 3600);
exit(0);
}
}
g_pid = getpid();
#ifdef _USING_FCGI_
//while(FCGI_Accept() >= 0 && counter < MAX_FCGI_COUNT) {
while(FCGI_Accept() >= 0) {
counter++;
#endif
if (project_stopped) {
send_message("Project is temporarily shut down for maintenance", 3600);
goto done;
}
fprintf(stdout,"Content-type: text/plain\n\n");
if (use_files) {
// the code below is convoluted because,
// instead of going from stdin to stdout directly,
// we go via a pair of disk files
// (this makes it easy to save the input,
// and to know the length of the output).
//
sprintf(req_path, "%s%d_%u", REQ_FILE_PREFIX, g_pid, counter);
sprintf(reply_path, "%s%d_%u", REPLY_FILE_PREFIX, g_pid, counter);
fout = fopen(req_path, "w");
if (!fout) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL, "can't write request file\n");
exit(1);
}
copy_stream(stdin, fout);
fclose(fout);
fin = fopen(req_path, "r");
if (!fin) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL, "can't read request file\n");
exit(1);
}
fout = fopen(reply_path, "w");
if (!fout) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL, "can't write reply file\n");
exit(1);
}
handle_request(fin, fout, *ssp, code_sign_key);
fclose(fin);
fclose(fout);
fin = fopen(reply_path, "r");
if (!fin) {
log_messages.printf(SCHED_MSG_LOG::CRITICAL, "can't read reply file\n");
exit(1);
}
copy_stream(fin, stdout);
fclose(fin);
//unlink(req_path);
//unlink(reply_path);
} else {
handle_request(stdin, stdout, *ssp, code_sign_key);
}
done:
#ifdef _USING_FCGI_
fprintf(stderr, "FCGI: counter: %d\n", counter);
continue;
}
if (counter == MAX_FCGI_COUNT) {
fprintf(stderr, "FCGI: counter passed MAX_FCGI_COUNT - exiting..\n");
}
else {
fprintf(stderr, "FCGI: FCGI_Accept failed - exiting..\n");
}
// when exiting, write headers back to apache so it won't complain
// about "incomplete headers"
fprintf(stdout,"Content-type: text/plain\n\n");
#endif
if (db_opened) {
boinc_db.close();
}
}
const char *BOINC_RCSID_0ebdf5d770 = "$Id$";