boinc/sched/file_deleter.C

180 lines
5.2 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):
//
// file_deleter: deletes files that are no longer needed
#include <string.h>
#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include "boinc_db.h"
#include "parse.h"
#include "util.h"
#include "config.h"
#include "sched_util.h"
#define LOCKFILE "file_deleter.out"
#define PIDFILE "file_deleter.pid"
CONFIG config;
int wu_delete_files(WORKUNIT& wu) {
char* p;
char filename[256], pathname[256], buf[MAX_BLOB_SIZE];
bool no_delete=false;
int count_deleted = 0;
safe_strcpy(buf, wu.xml_doc);
p = strtok(buf, "\n");
strcpy(filename, "");
while (p) {
if (parse_str(p, "<name>", filename, sizeof(filename))) {
} else if (match_tag(p, "<file_info>")) {
no_delete = false;
strcpy(filename, "");
} else if (match_tag(p, "<no_delete/>")) {
no_delete = true;
} else if (match_tag(p, "</file_info>")) {
if (!no_delete) {
sprintf(pathname, "%s/%s", config.download_dir, filename);
log_messages.printf(SchedMessages::DEBUG, "[%s] deleting %s\n", wu.name, pathname);
unlink(pathname);
++count_deleted;
}
}
p = strtok(0, "\n");
}
log_messages.printf(SchedMessages::NORMAL, "[%s] deleted %d file(s)\n", wu.name, count_deleted);
return 0;
}
int result_delete_files(RESULT& result) {
char* p;
char filename[256], pathname[256], buf[MAX_BLOB_SIZE];
bool no_delete=false;
int count_deleted = 0;
safe_strcpy(buf, result.xml_doc_in);
p = strtok(buf,"\n");
while (p) {
if (parse_str(p, "<name>", filename, sizeof(filename))) {
} else if (match_tag(p, "<file_info>")) {
no_delete = false;
strcpy(filename, "");
} else if (match_tag(p, "<no_delete/>")) {
no_delete = true;
} else if (match_tag(p, "</file_info>")) {
if (!no_delete) {
sprintf(pathname, "%s/%s", config.upload_dir, filename);
log_messages.printf(SchedMessages::DEBUG, "[%s] deleting %s\n", result.name, pathname);
unlink(pathname);
++count_deleted;
}
}
p = strtok(0, "\n");
}
log_messages.printf(SchedMessages::NORMAL, "[%s] deleted %d file(s)\n", result.name, count_deleted);
return 0;
}
// return nonzero if did anything
//
bool do_pass() {
DB_WORKUNIT wu;
DB_RESULT result;
bool did_something = false;
char buf[256];
check_stop_trigger();
sprintf(buf, "where file_delete_state=%d", FILE_DELETE_READY);
while (!wu.enumerate(buf)) {
did_something = true;
wu_delete_files(wu);
wu.file_delete_state = FILE_DELETE_DONE;
wu.update();
}
sprintf(buf, "where file_delete_state=%d", FILE_DELETE_READY);
while (!result.enumerate(buf)) {
did_something = true;
result_delete_files(result);
result.file_delete_state = FILE_DELETE_DONE;
result.update();
}
return did_something;
}
int main(int argc, char** argv) {
int retval;
bool asynch = false, one_pass = false;
int i;
check_stop_trigger();
for (i=1; i<argc; i++) {
if (!strcmp(argv[i], "-asynch")) {
asynch = true;
} else if (!strcmp(argv[i], "-one_pass")) {
one_pass = true;
} else if (!strcmp(argv[i], "-d")) {
log_messages.set_debug_level(atoi(argv[++i]));
} else {
log_messages.printf(SchedMessages::CRITICAL, "Unrecognized arg: %s\n", argv[i]);
}
}
retval = config.parse_file();
if (retval) {
log_messages.printf(SchedMessages::CRITICAL, "Can't parse config file\n");
exit(1);
}
if (asynch) {
if (fork()) {
exit(0);
}
}
// Call lock_file after fork(), because file locks are not always inherited
if (lock_file(LOCKFILE)) {
log_messages.printf(SchedMessages::NORMAL, "Another copy of file deleter is running\n");
exit(1);
}
write_pid_file(PIDFILE);
log_messages.printf(SchedMessages::NORMAL, "Starting\n");
retval = boinc_db_open(config.db_name, config.db_passwd);
if (retval) {
log_messages.printf(SchedMessages::CRITICAL, "can't open DB\n");
exit(1);
}
install_sigint_handler();
if (one_pass) {
do_pass();
} else {
while (1) {
if (!do_pass()) sleep(10);
}
}
}