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boinc/sched/validator.C

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// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC 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.
//
// BOINC 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 BOINC. If not, see <http://www.gnu.org/licenses/>.
// validator - check and validate results, and grant credit
// -app appname
// [-d debug_level]
// [-one_pass_N_WU N] // Validate only N WU in one pass, then exit
// [-one_pass] // make one pass through WU table, then exit
// [-mod n i] // process only WUs with (id mod n) == i
// [-max_granted_credit X] // limit maximum granted credit to X
// [-max_claimed_credit Y] // invalid if claims more than Y
// [-grant_claimed_credit] // just grant whatever is claimed
// [-update_credited_job] // add userid/wuid pair to credited_job table
// [-credit_from_wu] // get credit from WU XML
//
// This program must be linked with two project-specific functions:
// check_set() and check_pair().
// See doc/validate.php for a description.
using namespace std;
#include "config.h"
#include <unistd.h>
#include <climits>
#include <cmath>
#include <vector>
#include <cstdlib>
#include <string>
#include <signal.h>
#include "boinc_db.h"
#include "util.h"
#include "str_util.h"
#include "error_numbers.h"
#include "sched_config.h"
#include "sched_util.h"
#include "sched_msgs.h"
#include "validate_util.h"
#define LOCKFILE "validate.out"
#define PIDFILE "validate.pid"
#define SELECT_LIMIT 1000
#define SLEEP_PERIOD 5
int sleep_interval = SLEEP_PERIOD;
typedef enum {
NEVER,
DELAYED,
IMMEDIATE,
NO_CHANGE
} TRANSITION_TIME;
extern int check_set(
vector<RESULT>&, WORKUNIT& wu, int& canonical, double& credit,
bool& retry
);
extern int check_pair(
RESULT & new_result, RESULT & canonical_result, bool& retry
);
char app_name[256];
DB_APP app;
int wu_id_modulus=0;
int wu_id_remainder=0;
int one_pass_N_WU=0;
bool one_pass = false;
double max_granted_credit = 0;
double max_claimed_credit = 0;
bool grant_claimed_credit = false;
bool update_credited_job = false;
bool credit_from_wu = false;
bool simulation = false;
void signal_handler(int) {
log_messages.printf(MSG_NORMAL, "Signaled by simulator\n");
return;
}
bool is_unreplicated(WORKUNIT& wu) {
return (wu.target_nresults == 1 && app.target_nresults > 1);
}
void update_error_rate(DB_HOST& host, bool valid) {
if (valid) {
host.error_rate *= 0.95;
} else {
host.error_rate += 0.1;
}
if (host.error_rate > 1) host.error_rate = 1;
if (host.error_rate <= 0) host.error_rate = 0.1;
}
// Here when a result has been validated and its granted_credit has been set.
// Grant credit to host, user and team, and update host error rate.
//
int is_valid(RESULT& result, WORKUNIT& wu) {
DB_USER user;
DB_HOST host;
DB_TEAM team;
DB_CREDITED_JOB credited_job;
int retval;
char buf[256];
retval = host.lookup_id(result.hostid);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d] lookup of host %d failed %d\n",
result.id, result.hostid, retval
);
return retval;
}
retval = user.lookup_id(host.userid);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d] lookup of user %d failed %d\n",
result.id, host.userid, retval
);
return retval;
}
update_average(
result.sent_time, result.granted_credit, CREDIT_HALF_LIFE,
user.expavg_credit, user.expavg_time
);
sprintf(
buf, "total_credit=total_credit+%f, expavg_credit=%f, expavg_time=%f",
result.granted_credit, user.expavg_credit, user.expavg_time
);
retval = user.update_field(buf);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d] update of user %d failed %d\n",
result.id, host.userid, retval
);
}
update_average(
result.sent_time, result.granted_credit, CREDIT_HALF_LIFE,
host.expavg_credit, host.expavg_time
);
double turnaround = result.received_time - result.sent_time;
compute_avg_turnaround(host, turnaround);
// compute new credit per CPU time
//
retval = update_credit_per_cpu_sec(
result.granted_credit, result.cpu_time, host.credit_per_cpu_sec
);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d][HOST#%d] claimed too much credit (%f) in too little CPU time (%f)\n",
result.id, result.hostid, result.granted_credit, result.cpu_time
);
}
double old_error_rate = host.error_rate;
if (!is_unreplicated(wu)) {
update_error_rate(host, true);
}
sprintf(
buf,
"total_credit=total_credit+%f, expavg_credit=%f, expavg_time=%f, avg_turnaround=%f, credit_per_cpu_sec=%f, error_rate=%f",
result.granted_credit, host.expavg_credit, host.expavg_time, host.avg_turnaround, host.credit_per_cpu_sec, host.error_rate
);
retval = host.update_field(buf);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d] update of host %d failed %d\n",
result.id, result.hostid, retval
);
}
log_messages.printf(MSG_DEBUG,
"[HOST#%d] error rate %f->%f\n",
host.id, old_error_rate, host.error_rate
);
if (user.teamid) {
retval = team.lookup_id(user.teamid);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d] lookup of team %d failed %d\n",
result.id, user.teamid, retval
);
return retval;
}
update_average(result.sent_time, result.granted_credit, CREDIT_HALF_LIFE, team.expavg_credit, team.expavg_time);
sprintf(
buf, "total_credit=total_credit+%f, expavg_credit=%f, expavg_time=%f",
result.granted_credit, team.expavg_credit, team.expavg_time
);
retval = team.update_field(buf);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d] update of team %d failed %d\n",
result.id, team.id, retval
);
}
}
if (update_credited_job) {
credited_job.userid = user.id;
credited_job.workunitid = long(wu.opaque);
retval = credited_job.insert();
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d] Warning: credited_job insert failed (userid: %d workunit: %f err: %d)\n",
result.id, user.id, wu.opaque, retval
);
} else {
log_messages.printf(MSG_DEBUG,
"[RESULT#%d %s] added credited_job record [WU#%d OPAQUE#%f USER#%d]\n",
result.id, result.name, wu.id, wu.opaque, user.id
);
}
}
return 0;
}
int is_invalid(WORKUNIT& wu, RESULT& result) {
char buf[256];
int retval;
DB_HOST host;
retval = host.lookup_id(result.hostid);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d] lookup of host %d failed %d\n",
result.id, result.hostid, retval
);
return retval;
}
double old_error_rate = host.error_rate;
if (!is_unreplicated(wu)) {
update_error_rate(host, false);
}
sprintf(buf, "error_rate=%f", host.error_rate);
retval = host.update_field(buf);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d] update of host %d failed %d\n",
result.id, result.hostid, retval
);
return retval;
}
log_messages.printf(MSG_DEBUG,
"[HOST#%d] invalid result; error rate %f->%f\n",
host.id, old_error_rate, host.error_rate
);
return 0;
}
// Return zero iff we resolved the WU
//
int handle_wu(
DB_VALIDATOR_ITEM_SET& validator, std::vector<VALIDATOR_ITEM>& items
) {
int canonical_result_index = -1;
bool update_result, retry;
TRANSITION_TIME transition_time = NO_CHANGE;
int retval = 0, canonicalid = 0, x;
double credit = 0;
unsigned int i;
WORKUNIT& wu = items[0].wu;
if (wu.canonical_resultid) {
log_messages.printf(MSG_NORMAL,
"[WU#%d %s] Already has canonical result %d\n",
wu.id, wu.name, wu.canonical_resultid
);
++log_messages;
// Here if WU already has a canonical result.
// Get unchecked results and see if they match the canonical result
//
for (i=0; i<items.size(); i++) {
RESULT& result = items[i].res;
if (result.id == wu.canonical_resultid) {
canonical_result_index = i;
}
}
if (canonical_result_index == -1) {
log_messages.printf(MSG_CRITICAL,
"[WU#%d %s] Can't find canonical result %d\n",
wu.id, wu.name, wu.canonical_resultid
);
return 0;
}
RESULT& canonical_result = items[canonical_result_index].res;
// scan this WU's results, and check the unchecked ones
//
for (i=0; i<items.size(); i++) {
RESULT& result = items[i].res;
if (result.server_state != RESULT_SERVER_STATE_OVER) continue;
if (result.outcome != RESULT_OUTCOME_SUCCESS) continue;
switch (result.validate_state) {
case VALIDATE_STATE_INIT:
case VALIDATE_STATE_INCONCLUSIVE:
break;
default:
continue;
}
log_messages.printf(MSG_NORMAL,
"[WU#%d] handle_wu(): testing result %d\n",
wu.id, result.id
);
check_pair(result, canonical_result, retry);
if (retry) transition_time = DELAYED;
update_result = false;
if (result.outcome == RESULT_OUTCOME_VALIDATE_ERROR) {
update_result = true;
}
// this might be last result, so let validator
// trigger file delete etc. if needed
//
transition_time = IMMEDIATE;
switch (result.validate_state) {
case VALIDATE_STATE_VALID:
update_result = true;
if (result.granted_credit == 0) {
result.granted_credit = grant_claimed_credit ? result.claimed_credit : wu.canonical_credit;
if (max_granted_credit && result.granted_credit > max_granted_credit) {
result.granted_credit = max_granted_credit;
}
}
log_messages.printf(MSG_NORMAL,
"[RESULT#%d %s] pair_check() matched: setting result to valid; credit %f\n",
result.id, result.name, result.granted_credit
);
retval = is_valid(result, wu);
if (retval) {
log_messages.printf(MSG_NORMAL,
"[RESULT#%d %s] Can't grant credit: %d\n",
result.id, result.name, retval
);
}
break;
case VALIDATE_STATE_INVALID:
update_result = true;
log_messages.printf(MSG_NORMAL,
"[RESULT#%d %s] pair_check() didn't match: setting result to invalid\n",
result.id, result.name
);
is_invalid(wu, result);
}
if (update_result) {
log_messages.printf(MSG_NORMAL,
"[RESULT#%d %s] granted_credit %f\n",
result.id, result.name, result.granted_credit
);
retval = validator.update_result(result);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d %s] Can't update result: %d\n",
result.id, result.name, retval
);
}
}
}
} else {
vector<RESULT> results;
int nsuccess_results;
// Here if WU doesn't have a canonical result yet.
// Try to get one
log_messages.printf(MSG_NORMAL,
"[WU#%d %s] handle_wu(): No canonical result yet\n",
wu.id, wu.name
);
++log_messages;
// make a vector of only successful results
//
for (i=0; i<items.size(); i++) {
RESULT& result = items[i].res;
if ((result.server_state == RESULT_SERVER_STATE_OVER) &&
(result.outcome == RESULT_OUTCOME_SUCCESS)
) {
results.push_back(result);
}
}
log_messages.printf(MSG_DEBUG,
"[WU#%d %s] Found %d successful results\n",
wu.id, wu.name, (int)results.size()
);
if (results.size() >= (unsigned int)wu.min_quorum) {
log_messages.printf(MSG_DEBUG,
"[WU#%d %s] Enough for quorum, checking set.\n",
wu.id, wu.name
);
retval = check_set(results, wu, canonicalid, credit, retry);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[WU#%d %s] check_set returned %d, exiting\n",
wu.id, wu.name, retval
);
return retval;
}
if (retry) transition_time = DELAYED;
if (credit_from_wu) {
retval = get_credit_from_wu(wu, results, credit);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[WU#%d %s] get_credit_from_wu returned %d\n",
wu.id, wu.name, retval
);
return retval;
}
}
if (max_granted_credit && credit>max_granted_credit) {
credit = max_granted_credit;
}
// scan results.
// update as needed, and count the # of results
// that are still outcome=SUCCESS
// (some may have changed to VALIDATE_ERROR)
//
nsuccess_results = 0;
for (i=0; i<results.size(); i++) {
update_result = false;
RESULT& result = results[i];
if (result.outcome == RESULT_OUTCOME_VALIDATE_ERROR) {
transition_time = IMMEDIATE;
update_result = true;
} else {
nsuccess_results++;
}
switch (result.validate_state) {
case VALIDATE_STATE_VALID:
// grant credit for valid results
//
update_result = true;
if (result.granted_credit == 0) {
result.granted_credit = grant_claimed_credit ? result.claimed_credit : credit;
if (max_granted_credit && result.granted_credit > max_granted_credit) {
result.granted_credit = max_granted_credit;
}
}
retval = is_valid(result, wu);
if (retval) {
log_messages.printf(MSG_DEBUG,
"[RESULT#%d %s] is_valid() failed: %d\n",
result.id, result.name, retval
);
}
log_messages.printf(MSG_NORMAL,
"[RESULT#%d %s] Valid; granted %f credit [HOST#%d]\n",
result.id, result.name, result.granted_credit,
result.hostid
);
break;
case VALIDATE_STATE_INVALID:
log_messages.printf(MSG_NORMAL,
"[RESULT#%d %s] Invalid [HOST#%d]\n",
result.id, result.name, result.hostid
);
is_invalid(wu, result);
update_result = true;
break;
case VALIDATE_STATE_INIT:
log_messages.printf(MSG_NORMAL,
"[RESULT#%d %s] Inconclusive [HOST#%d]\n",
result.id, result.name, result.hostid
);
result.validate_state = VALIDATE_STATE_INCONCLUSIVE;
update_result = true;
break;
}
if (update_result) {
retval = validator.update_result(result);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d %s] result.update() failed: %d\n",
result.id, result.name, retval
);
}
}
}
if (canonicalid) {
// if we found a canonical result,
// trigger the assimilator, but do NOT trigger
// the transitioner - doing so creates a race condition
//
transition_time = NEVER;
log_messages.printf(MSG_DEBUG,
"[WU#%d %s] Found a canonical result: id=%d\n",
wu.id, wu.name, canonicalid
);
wu.canonical_resultid = canonicalid;
wu.canonical_credit = credit;
wu.assimilate_state = ASSIMILATE_READY;
// If found a canonical result, don't send any unsent results
//
for (i=0; i<items.size(); i++) {
RESULT& result = items[i].res;
if (result.server_state != RESULT_SERVER_STATE_UNSENT) {
continue;
}
result.server_state = RESULT_SERVER_STATE_OVER;
result.outcome = RESULT_OUTCOME_DIDNT_NEED;
retval = validator.update_result(result);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[RESULT#%d %s] result.update() failed: %d\n",
result.id, result.name, retval
);
}
}
} else {
// here if no consensus.
// check if #success results is too large
//
if (nsuccess_results > wu.max_success_results) {
wu.error_mask |= WU_ERROR_TOO_MANY_SUCCESS_RESULTS;
transition_time = IMMEDIATE;
}
// if #success results == than target_nresults,
// we need more results, so bump target_nresults
// NOTE: nsuccess_results should never be > target_nresults,
// but accommodate that if it should happen
//
if (nsuccess_results >= wu.target_nresults) {
wu.target_nresults = nsuccess_results+1;
transition_time = IMMEDIATE;
}
}
}
}
--log_messages;
switch (transition_time) {
case IMMEDIATE:
wu.transition_time = time(0);
break;
case DELAYED:
x = time(0) + 6*3600;
if (x < wu.transition_time) wu.transition_time = x;
break;
case NEVER:
wu.transition_time = INT_MAX;
break;
case NO_CHANGE:
break;
}
wu.need_validate = 0;
retval = validator.update_workunit(wu);
if (retval) {
log_messages.printf(MSG_CRITICAL,
"[WU#%d %s] update_workunit() failed: %d; exiting\n",
wu.id, wu.name, retval
);
return retval;
}
return 0;
}
// make one pass through the workunits with need_validate set.
// return true if there were any
//
bool do_validate_scan() {
DB_VALIDATOR_ITEM_SET validator;
std::vector<VALIDATOR_ITEM> items;
bool found=false;
int retval;
// loop over entries that need to be checked
//
while (1) {
retval = validator.enumerate(
app.id, one_pass_N_WU?one_pass_N_WU:SELECT_LIMIT,
wu_id_modulus, wu_id_remainder,
items
);
if (retval) {
if (retval != ERR_DB_NOT_FOUND) {
log_messages.printf(MSG_DEBUG,
"DB connection lost, exiting\n"
);
exit(0);
}
break;
}
retval = handle_wu(validator, items);
if (!retval) found = true;
}
return found;
}
int main_loop() {
int retval;
bool did_something;
char buf[256];
retval = boinc_db.open(config.db_name, config.db_host, config.db_user, config.db_passwd);
if (retval) {
log_messages.printf(MSG_CRITICAL, "boinc_db.open failed: %d\n", retval);
exit(1);
}
sprintf(buf, "where name='%s'", app_name);
retval = app.lookup(buf);
if (retval) {
log_messages.printf(MSG_CRITICAL, "can't find app %s\n", app_name);
exit(1);
}
while (1) {
check_stop_daemons();
did_something = do_validate_scan();
if (!did_something) {
if (one_pass) break;
if (simulation) {
signal(SIGUSR2, signal_handler);
pause();
} else {
sleep(sleep_interval);
}
}
}
return 0;
}
// For use by user routines check_set() and check_match() that link to
// this code.
int boinc_validator_debuglevel=0;
int main(int argc, char** argv) {
int i, retval;
#if 0
int mypid=getpid();
char debugcmd[512];
sprintf(debugcmd, "ddd %s %d &", argv[0], mypid);
system(debugcmd);
sleep(30);
#endif
const char *usage =
"\nUsage: %s -app <app-name> [OPTIONS]\n"
"Start validator for application <app-name>\n\n"
"Optional arguments:\n"
" -one_pass_N_WU N Validate at most N WUs, then exit\n"
" -one_pass Make one pass through WU table, then exit\n"
" -mod n i Process only WUs with (id mod n) == i\n"
" -max_claimed_credit X If a result claims more credit than this, mark it as invalid\n"
" -max_granted_credit X Grant no more than this amount of credit to a result\n"
" -grant_claimed_credit Grant the claimed credit, regardless of what other results for this workunit claimed\n"
" -update_credited_job Add record to credited_job table after granting credit\n"
" -credit_from_wu Credit is specified in WU XML\n"
" -sleep_interval n Set sleep-interval to n\n"
" -d level Set debug-level\n\n";
if ((argc > 1) && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))) {
printf (usage, argv[0] );
exit(1);
}
check_stop_daemons();
for (i=1; i<argc; i++) {
if (!strcmp(argv[i], "-one_pass_N_WU")) {
one_pass_N_WU = atoi(argv[++i]);
one_pass = true;
} else if (!strcmp(argv[i], "-sleep_interval")) {
sleep_interval = atoi(argv[++i]);
} else if (!strcmp(argv[i], "-one_pass")) {
one_pass = true;
} else if (!strcmp(argv[i], "-app")) {
strcpy(app_name, argv[++i]);
} else if (!strcmp(argv[i], "-d")) {
boinc_validator_debuglevel=atoi(argv[++i]);
log_messages.set_debug_level(boinc_validator_debuglevel);
} else if (!strcmp(argv[i], "-mod")) {
wu_id_modulus = atoi(argv[++i]);
wu_id_remainder = atoi(argv[++i]);
} else if (!strcmp(argv[i], "-max_granted_credit")) {
max_granted_credit = atof(argv[++i]);
} else if (!strcmp(argv[i], "-max_claimed_credit")) {
max_claimed_credit = atof(argv[++i]);
} else if (!strcmp(argv[i], "-grant_claimed_credit")) {
grant_claimed_credit = true;
} else if (!strcmp(argv[i], "-update_credited_job")) {
update_credited_job = true;
} else if (!strcmp(argv[i], "-credit_from_wu")) {
credit_from_wu = true;
} else if (!strcmp(argv[i], "-simulator")) {
simulation = true;
} else {
fprintf(stderr, "Invalid option '%s'\nTry `%s --help` for more information\n", argv[i], argv[0]);
log_messages.printf(MSG_CRITICAL, "unrecognized arg: %s\n", argv[i]);
exit(1);
}
}
// -app is required
if (app_name[0] == 0) {
fprintf (stderr, "\nERROR: use '-app' to specify the application to run the validator for.\n");
printf (usage, argv[0] );
exit(1);
}
retval = config.parse_file("..");
if (retval) {
log_messages.printf(MSG_CRITICAL,
"Can't parse ../config.xml: %s\n", boincerror(retval)
);
exit(1);
}
log_messages.printf(MSG_NORMAL,
"Starting validator, debug level %d\n", log_messages.debug_level
);
if (wu_id_modulus) {
log_messages.printf(MSG_NORMAL,
"Modulus %d, remainder %d\n", wu_id_modulus, wu_id_remainder
);
}
install_stop_signal_handler();
main_loop();
}
const char *BOINC_RCSID_634dbda0b9 = "$Id$";
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