std::string ns_compile_sql_where_clause(const std::set<unsigned long> & ids, const std::string column_name) {
std::string r;
if (!ids.empty()) {
r += " (id=";
r += ns_to_string(*ids.begin());
for (std::set<unsigned long>::const_iterator p = ++ids.begin(); p!= ids.end(); p++) {
r += " OR ";
r+=column_name;
r+= "=";
r += ns_to_string(*p);
}
r += ")";
}
return r;
}
/**
* basil_reserve - wrapper around rsvn_new.
* @user: owner of the reservation
* @batch_id: (numeric) job ID
* @width: mppwidth (aprun -n)
* @depth: mppdepth (aprun -d)
* @nppn: mppnppn (aprun -N)
* @mem_mb: mppmem (aprun -m)
* @ns_head: list of requested mppnodes (will be freed if not NULL)
* @accel_head: optional accelerator parameters
* Returns reservation ID > 0 if ok, negative %enum basil_error on error.
*/
long basil_reserve(const char *user, const char *batch_id,
uint32_t width, uint32_t depth, uint32_t nppn,
uint32_t mem_mb, uint32_t nppcu, struct nodespec *ns_head,
struct basil_accel_param *accel_head)
{
struct basil_reservation *rsvn;
struct basil_parse_data bp = {0};
/* do not free mppnodes it is stored/freed in the rsvn struct */
char *mppnodes = ns_to_string(ns_head);
long rc;
free_nodespec(ns_head);
rsvn = _rsvn_new(user, batch_id, width, depth, nppn, mem_mb,
nppcu, mppnodes, accel_head);
if (rsvn == NULL)
return -BE_INTERNAL;
bp.method = BM_reserve;
bp.mdata.res = rsvn;
bp.version = BV_1_0;
/*
* Rule:
* - if *res->batch_id is set, we are using Basil 1.1
* - if *res->batch_id == '\0' we have to fall back to Basil 1.0
*/
if (batch_id && *batch_id)
bp.version = get_basil_version();
rc = basil_request(&bp);
if (rc >= 0)
rc = rsvn->rsvn_id;
free_rsvn(rsvn);
return rc;
}
static int __userns_sysctl_op(void *arg, int proc_fd, pid_t pid)
{
int fd, ret = -1, dir, i, status, *fds = NULL;
struct sysctl_userns_req *userns_req = arg;
int op = userns_req->op;
struct sysctl_req *req, **reqs = NULL;
sigset_t blockmask, oldmask;
pid_t worker;
// fix up the pointer
req = userns_req->reqs = (struct sysctl_req *) &userns_req[1];
/* For files in the IPC/UTS namespaces, restoring is more complicated
* than for net. Unprivileged users cannot even open these files, so
* they must be opened by usernsd. However, the value in the kernel is
* changed for the IPC/UTS namespace that write()s to the open sysctl
* file (not who opened it). So, we must set the value from inside the
* usernsd caller's namespace. We:
*
* 1. unsd opens the sysctl files
* 2. forks a task
* 3. setns()es to the UTS/IPC namespace of the caller
* 4. write()s to the files and exits
*/
dir = open("/proc/sys", O_RDONLY, O_DIRECTORY);
if (dir < 0) {
pr_perror("Can't open sysctl dir");
return -1;
}
fds = xmalloc(sizeof(int) * userns_req->nr_req);
if (!fds)
goto out;
reqs = xmalloc(sizeof(struct sysctl_req) * userns_req->nr_req);
if (!reqs)
goto out;
memset(fds, -1, sizeof(int) * userns_req->nr_req);
for (i = 0; i < userns_req->nr_req; i++) {
int arg_len = sysctl_userns_arg_size(req->type);
int name_len = strlen((char *) &req[1]) + 1;
int total_len = sizeof(*req) + arg_len + name_len;
int flags;
/* fix up the pointers */
req->name = (char *) &req[1];
req->arg = req->name + name_len;
if (((char *) req) + total_len >= ((char *) userns_req) + MAX_UNSFD_MSG_SIZE) {
pr_err("bad sysctl req %s, too big: %d\n", req->name, total_len);
goto out;
}
if (op == CTL_READ)
flags = O_RDONLY;
else
flags = O_WRONLY;
fd = openat(dir, req->name, flags);
if (fd < 0) {
if (errno == ENOENT && (req->flags & CTL_FLAGS_OPTIONAL))
continue;
pr_perror("Can't open sysctl %s", req->name);
goto out;
}
/* save a pointer to the req, so we don't need to recompute its
* location
*/
reqs[i] = req;
fds[i] = fd;
req = (struct sysctl_req *) (((char *) req) + total_len);
}
/*
* Don't let the sigchld_handler() mess with us
* calling waitpid() on the exited worker. The
* same is done in cr_system().
*/
sigemptyset(&blockmask);
sigaddset(&blockmask, SIGCHLD);
sigprocmask(SIG_BLOCK, &blockmask, &oldmask);
worker = fork();
if (worker < 0)
goto out;
if (!worker) {
int nsfd;
const char *nsname = ns_to_string(userns_req->ns);
BUG_ON(!nsname);
nsfd = openat(proc_fd, nsname, O_RDONLY);
if (nsfd < 0) {
pr_perror("failed to open pid %d's ns %s", pid, nsname);
exit(1);
}
if (setns(nsfd, 0) < 0) {
pr_perror("failed to setns to %d's ns %s", pid, nsname);
exit(1);
}
close(nsfd);
for (i = 0; i < userns_req->nr_req; i++) {
if (do_sysctl_op(fds[i], reqs[i], op) < 0)
exit(1);
}
exit(0);
}
if (waitpid(worker, &status, 0) != worker) {
pr_perror("worker didn't die?");
kill(worker, SIGKILL);
goto out;
}
sigprocmask(SIG_SETMASK, &oldmask, NULL);
if (!WIFEXITED(status) || WEXITSTATUS(status)) {
pr_err("worker failed: %d\n", status);
goto out;
}
ret = 0;
out:
if (fds) {
for (i = 0; i < userns_req->nr_req; i++) {
if (fds[i] < 0)
break;
close_safe(&fds[i]);
}
xfree(fds);
}
if (reqs)
xfree(reqs);
close_safe(&dir);
return ret;
}
void ns_buffered_capture_scheduler::store_last_update_time_in_db(const ns_synchronized_time & time,ns_local_buffer_connection & sql) {
image_server.set_cluster_constant_value("local_time_of_last_buffer_upload_to_central_db",ns_to_string(time.local_time),&sql);
image_server.set_cluster_constant_value("central_time_of_last_buffer_upload_to_central_db",ns_to_string(time.remote_time),&sql);
}
void ns_buffered_capture_scheduler::get_last_update_time(ns_local_buffer_connection & local_buffer_sql) {
time_of_last_update_from_central_db.local_time = atol(image_server.get_cluster_constant_value("local_time_of_last_buffer_upload_to_central_db",ns_to_string(ns_default_update_time),&local_buffer_sql).c_str());
time_of_last_update_from_central_db.remote_time = atol(image_server.get_cluster_constant_value("central_time_of_last_buffer_upload_to_central_db",ns_to_string(ns_default_update_time),&local_buffer_sql).c_str());
}
void ns_buffered_capture_scheduler::update_local_buffer_from_central_server(ns_image_server_device_manager::ns_device_name_list & connected_devices,ns_local_buffer_connection & local_buffer, ns_sql & central_db) {
if (connected_devices.size() == 0)
return;
ns_acquire_lock_for_scope lock(buffer_capture_scheduler_lock,__FILE__,__LINE__);
local_buffer.clear_query();
central_db.clear_query();
std::string local_time = local_buffer.get_value("SELECT UNIX_TIMESTAMP(NOW())"),
central_time = central_db.get_value("SELECT UNIX_TIMESTAMP(NOW())");
const ns_synchronized_time update_start_time(atol(local_time.c_str())-10,atol(central_time.c_str())-10);//go ten seconds into the past
//to make sure all writes
//are committed
//now we update the local buffer to the central node.
commit_all_local_schedule_changes_to_central_db(update_start_time,local_buffer,central_db);
//now that all the local buffer data is reflected in the central database, we check to see if there is any new data in the central database.
//if so, we wipe the local buffer and update everything.
capture_schedule.load_if_needed(¢ral_db);
//get any new or updated capture schedule events
central_db << "SELECT sched.id, samp.id, samp.experiment_id, UNIX_TIMESTAMP(sched.time_stamp),UNIX_TIMESTAMP(samp.time_stamp)";
for (unsigned int i = 0; i < capture_schedule.table_format.column_names.size(); i++)
central_db << ",`sched`.`" << capture_schedule.table_format.column_names[i] << "`";
central_db << " FROM capture_schedule as sched, capture_samples as samp "
<< "WHERE (samp.device_name='" << connected_devices[0].name << "'";
for (unsigned int i = 1; i < connected_devices.size(); i++)
central_db << " OR samp.device_name='" << connected_devices[i].name << "'";
central_db << ")"
<< " AND sched.time_at_start = 0 "
<< " AND sched.sample_id = samp.id "
<< " AND sched.time_at_finish = 0 "
//here, we could bring the entire local database completely up to date
//but only scans in the future will make any difference, so we only download
//those who are still scheduled for the future
//this old command would fully update the database, as time_of_last_update_from_central_db
//would be set to 0
//<< " AND sched.scheduled_time > " << (time_of_last_update_from_central_db.remote_time-image_server.maximum_allowed_local_scan_delay()) //only get events in the future
//however, now we only grab the future, relevant scans.
<< " AND sched.scheduled_time > " << (update_start_time.remote_time-image_server.maximum_allowed_local_scan_delay()) //only get events in the future
<< " AND sched.time_stamp > FROM_UNIXTIME(" << time_of_last_update_from_central_db.remote_time <<") "
<< " AND sched.time_stamp <= FROM_UNIXTIME(" << update_start_time.remote_time << ") "
<< " ORDER BY sched.scheduled_time ASC";
ns_sql_result new_schedule;
central_db.get_rows(new_schedule);
std::set<unsigned long> altered_experiment_ids;
std::set<unsigned long> altered_sample_ids;
for (unsigned int i = 0; i < new_schedule.size(); i++) {
// if (atol(new_schedule[i][4].c_str()) > central_time_of_last_update_from_central_db){
altered_sample_ids.insert(atol(new_schedule[i][1].c_str()));
altered_experiment_ids.insert(atol(new_schedule[i][2].c_str()));
// }
}
const unsigned long new_timestamp(update_start_time.local_time);
if (new_schedule.size() != 0) {
if (new_schedule.size() > 4)
image_server.register_server_event(ns_image_server_event("ns_buffered_capture_scheduler::")
<< new_schedule.size() << " new capture schedule entries found. Updating local buffer.",¢ral_db);
//if samples or experiments have changed or added, update them.
//we need to do this *before* updating the capture schedule,
//as the addition of a capture schedule item might trigger a scan immediately
//and that scan will fail if the sample and experiemnts information isn't already in the local database.
if (altered_sample_ids.size() > 0) {
capture_samples.load_if_needed("capture_samples",¢ral_db);
experiments.load_if_needed("experiments",¢ral_db);
std::string sample_where_clause(std::string(" WHERE ") + ns_compile_sql_where_clause(altered_sample_ids,"id")),
experiment_where_clause(std::string(" WHERE ") + ns_compile_sql_where_clause(altered_experiment_ids,"id"));
ns_sql_result capture_sample_data;
ns_get_all_column_data_from_table("capture_samples",capture_samples.column_names,sample_where_clause,capture_sample_data,¢ral_db);
ns_sql_result experiment_data;
ns_get_all_column_data_from_table("experiments",experiments.column_names,experiment_where_clause,experiment_data,¢ral_db);
std::cerr << "Updating local buffer with information about " << capture_sample_data.size() << " samples\n";
//local_buffer_db.send_query("DELETE FROM buffered_capture_samples");
if (capture_samples.time_stamp_column_id == -1)
throw ns_ex("Could not find capture sample time stamp column!");
long last_displayed_percent(-5);
for(unsigned int i = 0; i < capture_sample_data.size(); i++) {
const long percent((100*i)/capture_sample_data.size());
if (percent >= last_displayed_percent+5) {
std::cerr << percent << "%...";
last_displayed_percent = percent;
}
std::string values;
values += "`";
values += capture_samples.column_names[0] + "`='" + local_buffer.escape_string(capture_sample_data[i][0]) + "'";
for (unsigned int j = 1; j < capture_samples.column_names.size(); j++) {
if (j == capture_samples.time_stamp_column_id) //we need to update the local time stamp here, so that if there might be a clock asynchrony between the
continue; //central server and local server that would allow remote timestamps to be in the future according to local
//which would trigger the local server to update the central in the next check, ad infinitum.
values += std::string(",`") + capture_samples.column_names[j] + "`='" + local_buffer.escape_string(capture_sample_data[i][j]) + "'";
}
values += std::string(",`time_stamp`=FROM_UNIXTIME(") + ns_to_string(new_timestamp) + ")";
local_buffer << "INSERT INTO buffered_capture_samples SET " << values
<< " ON DUPLICATE KEY UPDATE " << values;
local_buffer.send_query();
}
std::cerr << "Done.\n";
//local_buffer.send_query("DELETE FROM buffered_experiments");
for(unsigned int i = 0; i < experiment_data.size(); i++) {
std::string values;
values += "`";
values += experiments.column_names[0] + "`='" + local_buffer.escape_string(experiment_data[i][0]) + "'";
for (unsigned int j = 1; j < experiments.column_names.size(); j++) {
if (experiments.time_stamp_column_id == j)
continue;
values += std::string(",`") + experiments.column_names[j] + "`='" + local_buffer.escape_string(experiment_data[i][j]) + "'";
}
values += std::string(",time_stamp=FROM_UNIXTIME(") + ns_to_string(new_timestamp) + ")";
local_buffer << "INSERT INTO buffered_experiments SET " << values;
local_buffer << " ON DUPLICATE KEY UPDATE " << values;
local_buffer.send_query();
}
}
std::cerr << "Updating local buffer with information about " << new_schedule.size() << " schedule time points...\n";
long last_displayed_percent = -5;
for (unsigned int i = 0; i < new_schedule.size(); i++) {
const long percent((100*i)/new_schedule.size());
if (percent >= last_displayed_percent+5) {
std::cerr << percent << "%...";
last_displayed_percent = percent;
}
std::string all_values;
all_values += "`";
all_values += capture_schedule.table_format.column_names[0] + "`='" + local_buffer.escape_string(new_schedule[i][5]) + "'";
for (unsigned int j = 1; j < capture_schedule.table_format.column_names.size(); j++) {
if (j == capture_schedule.time_stamp_column)
continue;
all_values += std::string( ", `") + capture_schedule.table_format.column_names[j] + "`='" + local_buffer.escape_string(new_schedule[i][5+j]) + "'";
}
all_values+=std::string(",time_stamp=FROM_UNIXTIME(") + ns_to_string(new_timestamp) + ")";
std::string update_values;
update_values += std::string("problem=") + new_schedule[i][5+capture_schedule.problem_column] + ","
+ std::string("scheduled_time=") + new_schedule[i][5+capture_schedule.scheduled_time_column] + ","
+ std::string("missed=") + new_schedule[i][5+capture_schedule.missed_column] + ","
+ std::string("censored=") + new_schedule[i][5+capture_schedule.censored_column] +","
+ std::string("transferred_to_long_term_storage=") + new_schedule[i][5+capture_schedule.transferred_to_long_term_storage_column] +","
+ std::string("time_during_transfer_to_long_term_storage=") + new_schedule[i][5+capture_schedule.time_during_transfer_to_long_term_storage_column] +","
+ std::string("time_during_deletion_from_local_storage=") + new_schedule[i][5+capture_schedule.time_during_deletion_from_local_storage_column] + ","
+ std::string("time_stamp=FROM_UNIXTIME(") + ns_to_string(update_start_time.local_time) + ")";
local_buffer << "INSERT INTO buffered_capture_schedule SET " << all_values
<< " ON DUPLICATE KEY UPDATE " << update_values;
local_buffer.send_query();
}
std::cerr << "Done.\n";
}
//if no changes to the schedule were made, look to see find changes made to any capture samples
else {
ns_sql_result capture_sample_data;
ns_get_all_column_data_from_table("capture_samples",capture_samples.column_names,
std::string("WHERE time_stamp >= FROM_UNIXTIME(") + ns_to_string(time_of_last_update_from_central_db.remote_time) +") "
" AND time_stamp < FROM_UNIXTIME(" + ns_to_string(update_start_time.remote_time) +") "
,capture_sample_data,¢ral_db);
if (capture_sample_data.size() > 0) {
std::cerr << "Copying over " << capture_sample_data.size() << " samples\n";
//local_buffer_db.send_query("DELETE FROM buffered_capture_samples");
for(unsigned int i = 0; i < capture_sample_data.size(); i++) {
std::string values;
values += "`";
values += capture_samples.column_names[0] + "`='" + local_buffer.escape_string(capture_sample_data[i][0]) + "'";
for (unsigned int j = 1; j < capture_samples.column_names.size(); j++)
values += std::string(",`") + capture_samples.column_names[j] + "`='" + local_buffer.escape_string(capture_sample_data[i][j]) + "'";
local_buffer << "INSERT INTO buffered_capture_samples SET " << values
<< " ON DUPLICATE KEY UPDATE " << values;
local_buffer.send_query();
}
}
}
local_buffer.send_query("COMMIT");
//lock.unlock();
commit_all_local_non_schedule_changes_to_central_db(update_start_time,local_buffer,central_db);
central_db << "SELECT k,v FROM constants WHERE time_stamp > FROM_UNIXTIME(" << time_of_last_update_from_central_db.remote_time << ")";
ns_sql_result cres;
central_db.get_rows(cres);
if (cres.size() > 0) {
std::cerr << "Updating " << cres.size() << " constants in local buffer\n";
}
for (unsigned int i = 0; i < cres.size(); i++)
image_server.set_cluster_constant_value(local_buffer.escape_string(cres[i][0]),local_buffer.escape_string(cres[i][1]),&local_buffer,update_start_time.local_time);
time_of_last_update_from_central_db = update_start_time;
store_last_update_time_in_db(time_of_last_update_from_central_db,local_buffer);
lock.release();
}
void ns_buffered_capture_scheduler::commit_all_local_schedule_changes_to_central_db(const ns_synchronized_time & update_start_time,ns_local_buffer_connection & local_buffer_sql, ns_sql & central_db) {
if (time_of_last_update_from_central_db.local_time == ns_default_update_time)
get_last_update_time(local_buffer_sql);
buffered_capture_schedule.load_if_needed(&local_buffer_sql);
ns_sql_result updated_data;
const std::string altered_data_condition(
std::string("time_stamp > FROM_UNIXTIME(") + ns_to_string(time_of_last_update_from_central_db.local_time) +
") AND time_stamp <= FROM_UNIXTIME(" + ns_to_string(update_start_time.local_time) + ") ");
const unsigned long new_timestamp(time_of_last_update_from_central_db.remote_time);
ns_get_all_column_data_from_table("buffered_capture_schedule",buffered_capture_schedule.table_format.column_names,
std::string("WHERE ") + altered_data_condition + " AND uploaded_to_central_db != 3",
updated_data,&local_buffer_sql);
std::vector<ns_db_key_mapping> mappings(updated_data.size());
if (updated_data.size() > 8)
image_server.register_server_event(ns_image_server_event("ns_buffered_capture_scheduler::Committing ") << updated_data.size() << " recorded capture events to the central database.",¢ral_db);
std::vector<ns_ex *> errors;
for (unsigned long i = 0; i < updated_data.size(); i++) {
try {
unsigned long captured_image_id = atol(updated_data[i][buffered_capture_schedule.image_id_column].c_str());
unsigned long problem_id = atol(updated_data[i][buffered_capture_schedule.problem_column].c_str());
unsigned long central_captured_image_id(0),
central_problem_id(0);
if (captured_image_id != 0 || problem_id != 0) {
central_db << "SELECT captured_image_id,problem FROM capture_schedule WHERE id = " << updated_data[i][buffered_capture_schedule.id_column];
ns_sql_result res;
central_db.get_rows(res);
if (res.size() == 0)
throw ns_ex("Could not find capture schedule entry in central db for sample id " ) << updated_data[i][buffered_capture_schedule.id_column] << " finishing at time " << updated_data[i][buffered_capture_schedule.time_at_finish_column];
central_captured_image_id = atol(res[0][0].c_str());
central_problem_id = atol(res[0][1].c_str());
}
const bool need_to_make_new_capture_image(captured_image_id != 0 && central_captured_image_id != captured_image_id);
//we need to make new entries in the central database for any new images or events
if (need_to_make_new_capture_image) {
mappings[i].captured_image.load_from_db(captured_image_id,&local_buffer_sql);
mappings[i].old_captured_image = mappings[i].captured_image;
mappings[i].old_image = mappings[i].image;
if (mappings[i].captured_image.capture_images_image_id != 0)
mappings[i].image.load_from_db(mappings[i].captured_image.capture_images_image_id,&local_buffer_sql);
}
else {
mappings[i].old_image = mappings[i].image;
mappings[i].old_captured_image = mappings[i].captured_image;
mappings[i].captured_image.captured_images_id = central_captured_image_id;
}
bool need_to_make_new_problem(problem_id != 0 && central_problem_id != problem_id);
if (need_to_make_new_problem) {
local_buffer_sql << "SELECT id,event,time,minor FROM buffered_host_event_log WHERE id = " << updated_data[i][buffered_capture_schedule.problem_column];
ns_sql_result res;
local_buffer_sql.get_rows(res);
mappings[i].old_problem_id = mappings[i].problem_id;
if (res.size() == 0) {
mappings[i].problem_id = image_server.register_server_event(ns_ex("Could not find problem id ") << updated_data[i][buffered_capture_schedule.problem_column] << " in local database buffer!",¢ral_db);
need_to_make_new_problem=false;
}
else {
mappings[i].problem_text = res[0][1];
mappings[i].problem_time = atol(res[0][2].c_str());
mappings[i].problem_minor = res[0][3] != "0";
}
}
else {
mappings[i].old_problem_id = mappings[i].problem_id;
mappings[i].problem_id = central_problem_id;
}
if (need_to_make_new_capture_image && mappings[i].image.id != 0) {
mappings[i].image.id = 0;
mappings[i].image.save_to_db(0,¢ral_db,false);
mappings[i].captured_image.capture_images_image_id = mappings[i].image.id;
}
if (need_to_make_new_capture_image) {
mappings[i].captured_image.captured_images_id = 0;
mappings[i].captured_image.save(¢ral_db);
}
if (need_to_make_new_problem) {
mappings[i].old_problem_id = mappings[i].problem_id;
ns_image_server_event ev;
ev << mappings[i].problem_text;
if (mappings[i].problem_minor) ev << ns_ts_minor_event;
ev.set_time(mappings[i].problem_time);
mappings[i].problem_id = image_server.register_server_event(ev,¢ral_db);
}
}
catch(ns_ex & ex) {
mappings[i].error << "Error while making mapping: " << ex.text();
errors.push_back(&mappings[i].error);
}
}
for (unsigned long i = 0; i < updated_data.size(); i++) {
if (mappings[i].error.text().size() > 0)
continue;
try {
central_db << "Update capture_schedule SET ";
for (unsigned int j = 0; j < buffered_capture_schedule.table_format.column_names.size(); ++j) {
if (j == buffered_capture_schedule.id_column
|| j == buffered_capture_schedule.image_id_column ||
j == buffered_capture_schedule.problem_column || j ==
buffered_capture_schedule.timestamp_column) continue;
central_db << "`" << buffered_capture_schedule.table_format.column_names[j] << "`='" << central_db.escape_string(updated_data[i][j]) << "',";
}
central_db << "captured_image_id = " << mappings[i].captured_image.captured_images_id
<< ", problem = " << mappings[i].problem_id;
//we set the timestamp as old so that it does not trigger a re-download when the server tries to update its cache
central_db << ", time_stamp=FROM_UNIXTIME("<< new_timestamp <<") ";
central_db << " WHERE id = " << updated_data[i][0];
central_db.send_query();
if (mappings[i].old_captured_image.captured_images_id != mappings[i].captured_image.captured_images_id ||
mappings[i].old_problem_id != mappings[i].problem_id) {
local_buffer_sql << "UPDATE buffered_capture_schedule SET captured_image_id = " << mappings[i].captured_image.captured_images_id
<< ", problem = " << mappings[i].problem_id << ", time_stamp = FROM_UNIXTIME("<< new_timestamp
<<") WHERE id = " << updated_data[i][buffered_capture_schedule.id_column];
local_buffer_sql.send_query();
local_buffer_sql << "DELETE FROM buffered_captured_images WHERE id = " << mappings[i].old_captured_image.captured_images_id;
local_buffer_sql.send_query();
local_buffer_sql << "DELETE FROM buffered_images WHERE id = " << mappings[i].old_image.id;
local_buffer_sql.send_query();
local_buffer_sql << "DELETE FROM buffered_host_event_log WHERE id = " << mappings[i].old_problem_id;
local_buffer_sql.send_query();
}
if (updated_data[i][buffered_capture_schedule.time_at_finish_column] != "0") {
local_buffer_sql << "DELETE FROM buffered_capture_schedule WHERE id = " << updated_data[i][buffered_capture_schedule.id_column];
local_buffer_sql.send_query();
// local_buffer_sql.clear_query();
}
}
catch(ns_ex & ex) {
mappings[i].error << "Error during central update: " << ex.text();
errors.push_back(&mappings[i].error);
}
}
for (unsigned int i = 0; i < mappings.size(); i++) {
if (mappings[i].error.text().size() > 0) {
local_buffer_sql << "UPDATE buffered_capture_schedule SET uploaded_to_central_db=3 WHERE id = " << updated_data[i][buffered_capture_schedule.id_column];
local_buffer_sql.send_query();
image_server.register_server_event(ns_image_server::ns_register_in_central_db_with_fallback,ns_ex("Could not update central db: ") << mappings[i].error.text());
}
}
//update modified sample data.
updated_data.resize(0);
if (capture_samples.column_names.size() == 0) {
capture_samples.load_column_names_from_db("capture_samples",¢ral_db);
if (capture_samples.column_names.size() == 0)
throw ns_ex("ns_buffered_capture_scheduler::commit_all_local_schedule_changes_to_central_db()::Capture sample table appears to have no columns!");
}
if (capture_samples.column_names[0] != "id")
throw ns_ex("ns_buffered_capture_scheduler::commit_all_local_schedule_changes_to_central_db()::Capture sample table does not have its id in the first column!");
ns_get_all_column_data_from_table("buffered_capture_samples",capture_samples.column_names,
std::string("WHERE ") + altered_data_condition,
updated_data,&local_buffer_sql);
if (capture_samples.time_stamp_column_id == -1)
throw ns_ex("Could not find capture sample time stamp column!");
for (unsigned int i = 0; i < updated_data.size(); i++) {
central_db << "UPDATE capture_samples SET ";
//skip id column; we don't want to cause any unneccisary db shuffling by changing ids (even if we are changing the ids to the value they already are)
central_db << capture_samples.column_names[1] << "='" << central_db.escape_string(updated_data[i][1]);
for (unsigned int j = 2; j < capture_samples.column_names.size(); ++j) {
if (j == capture_samples.time_stamp_column_id)
continue;
else central_db << "',`" << capture_samples.column_names[j] << "`='" << central_db.escape_string(updated_data[i][j]);
}
central_db << "',time_stamp=FROM_UNIXTIME(" << new_timestamp << ") ";
central_db << "WHERE id = " << updated_data[i][0];
central_db.send_query();
}
}
