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boinc/tools/backend_lib.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/>.
#include "config.h"
#include <cstdlib>
#include <cstring>
#include <string>
#include <ctime>
#include <cassert>
#include <unistd.h>
#include <cmath>
#include <sys/types.h>
#include <sys/stat.h>
#include "boinc_db.h"
#include "crypt.h"
#include "error_numbers.h"
#include "md5_file.h"
#include "parse.h"
#include "str_util.h"
#include "common_defs.h"
#include "filesys.h"
#include "sched_util.h"
#include "backend_lib.h"
#ifdef _USING_FCGI_
#include "fcgi_stdio.h"
#else
#define FCGI_ToFILE(x) (x)
#endif
using std::string;
static struct random_init {
random_init() {
srand48(getpid() + time(0));
}
} random_init;
int read_file(FILE* f, char* buf, int len) {
int n = fread(buf, 1, len, f);
buf[n] = 0;
return 0;
}
int read_filename(const char* path, char* buf, int len) {
int retval;
FILE* f = fopen(path, "r");
if (!f) return -1;
retval = read_file(f, buf, len);
fclose(f);
return retval;
}
// see checkin notes Dec 30 2004
//
static bool got_md5_info(
const char *path,
char *md5data,
double *nbytes
) {
bool retval=false;
// look for file named FILENAME.md5 containing md5sum and length.
// If found, and newer mod time than file, read md5 sum and file
// length from it.
FILE *fp;
char md5name[512];
struct stat md5stat, filestat;
char endline='\0';
sprintf(md5name, "%s.md5", path);
// get mod times for file
if (stat(path, &filestat))
return retval;
// get mod time for md5 cache file
if (stat(md5name, &md5stat))
return retval;
// if cached md5 newer, then open it
if (!(fp=fopen(md5name, "r")))
return retval;
// read two quantities: md5 sum and length. If we can't read
// these, or there is MORE stuff in the file' it's not an md5
// cache file
if (3 == fscanf(FCGI_ToFILE(fp), "%s %lf%c", md5data, nbytes, &endline) &&
endline=='\n' &&
EOF==fgetc(FCGI_ToFILE(fp))
)
retval=true;
fclose(fp);
// if this is one of our cached md5 files, but it's OLDER than the
// data file which it supposedly corresponds to, delete it.
if (retval && md5stat.st_mtime<filestat.st_mtime) {
unlink(md5name);
retval=false;
}
return retval;
}
// see checkin notes Dec 30 2004
//
static void write_md5_info(
const char *path,
const char *md5,
double nbytes
) {
// Write file FILENAME.md5 containing md5sum and length
//
FILE *fp;
char md5name[512];
struct stat statbuf;
int retval;
// if file already exists with this name, don't touch it.
//
sprintf(md5name, "%s.md5", path);
if (!stat(md5name, &statbuf)) {
return;
}
fp=fopen(md5name, "w");
// if can't open the file, give up
//
if (!fp) {
return;
}
retval = fprintf(fp,"%s %.15e\n", md5, nbytes);
fclose(fp);
// if we didn't write properly to the file, delete it.
//
if (retval<0) {
unlink(md5name);
}
return;
}
// fill in the workunit's XML document (wu.xml_doc)
// by scanning the WU template, macro-substituting the input files,
// and putting in the command line element and additional XML
//
static int process_wu_template(
WORKUNIT& wu,
char* tmplate,
const char** infiles,
int ninfiles,
SCHED_CONFIG& config_loc,
const char* command_line,
const char* additional_xml
) {
char* p;
char buf[BLOB_SIZE], md5[33], path[256], url[256], top_download_path[256];
string out, cmdline;
int retval, file_number;
double nbytes;
char open_name[256];
bool found=false;
int nfiles_parsed = 0;
out = "";
for (p=strtok(tmplate, "\n"); p; p=strtok(0, "\n")) {
if (match_tag(p, "<file_info>")) {
bool generated_locally = false;
file_number = -1;
out += "<file_info>\n";
while (1) {
p = strtok(0, "\n");
if (!p) break;
if (parse_int(p, "<number>", file_number)) {
continue;
} else if (parse_bool(p, "generated_locally", generated_locally)) {
continue;
} else if (match_tag(p, "</file_info>")) {
if (file_number < 0) {
fprintf(stderr, "No file number found\n");
return ERR_XML_PARSE;
}
if (file_number >= ninfiles) {
fprintf(stderr,
"Too few input files given; need at least %d\n",
file_number+1
);
return ERR_XML_PARSE;
}
nfiles_parsed++;
if (generated_locally) {
sprintf(buf,
" <name>%s</name>\n"
" <generated_locally/>\n"
"</file_info>\n",
infiles[file_number]
);
} else {
dir_hier_path(
infiles[file_number], config_loc.download_dir,
config_loc.uldl_dir_fanout, path, true
);
// if file isn't found in hierarchy,
// look for it at top level and copy
//
if (!boinc_file_exists(path)) {
sprintf(top_download_path,
"%s/%s",config_loc.download_dir,
infiles[file_number]
);
boinc_copy(top_download_path, path);
}
if (!config_loc.cache_md5_info || !got_md5_info(path, md5, &nbytes)) {
retval = md5_file(path, md5, nbytes);
if (retval) {
fprintf(stderr, "process_wu_template: md5_file %d\n", retval);
return retval;
}
else if (config_loc.cache_md5_info) {
write_md5_info(path, md5, nbytes);
}
}
dir_hier_url(
infiles[file_number], config_loc.download_url,
config_loc.uldl_dir_fanout, url
);
sprintf(buf,
" <name>%s</name>\n"
" <url>%s</url>\n"
" <md5_cksum>%s</md5_cksum>\n"
" <nbytes>%.0f</nbytes>\n"
"</file_info>\n",
infiles[file_number],
url,
md5,
nbytes
);
}
out += buf;
break;
} else {
out += p;
out += "\n";
}
}
} else if (match_tag(p, "<workunit>")) {
found = true;
out += "<workunit>\n";
if (command_line) {
out += "<command_line>\n";
out += command_line;
out += "\n</command_line>\n";
}
} else if (match_tag(p, "</workunit>")) {
if (additional_xml && strlen(additional_xml)) {
out += additional_xml;
out += "\n";
}
out += "</workunit>\n";
} else if (match_tag(p, "<file_ref>")) {
out += "<file_ref>\n";
bool found_file_number = false, found_open_name = false;
while (1) {
p = strtok(0, "\n");
if (!p) break;
if (parse_int(p, "<file_number>", file_number)) {
sprintf(buf, " <file_name>%s</file_name>\n",
infiles[file_number]
);
out += buf;
found_file_number = true;
continue;
} else if (parse_str(p, "<open_name>", open_name, sizeof(open_name))) {
sprintf(buf, " <open_name>%s</open_name>\n", open_name);
out += buf;
found_open_name = true;
continue;
} else if (match_tag(p, "</file_ref>")) {
if (!found_file_number) {
fprintf(stderr, "No file number found\n");
return ERR_XML_PARSE;
}
if (!found_open_name) {
fprintf(stderr, "No open name found\n");
return ERR_XML_PARSE;
}
out += "</file_ref>\n";
break;
} else {
sprintf(buf, "%s\n", p);
out += buf;
}
}
} else if (parse_str(p, "<command_line>", cmdline)) {
if (command_line) {
fprintf(stderr, "Can't specify command line twice");
return ERR_XML_PARSE;
}
out += "<command_line>\n";
out += cmdline;
out += "\n</command_line>\n";
} else if (parse_double(p, "<rsc_fpops_est>", wu.rsc_fpops_est)) {
continue;
} else if (parse_double(p, "<rsc_fpops_bound>", wu.rsc_fpops_bound)) {
continue;
} else if (parse_double(p, "<rsc_memory_bound>", wu.rsc_memory_bound)) {
continue;
} else if (parse_double(p, "<rsc_bandwidth_bound>", wu.rsc_bandwidth_bound)) {
continue;
} else if (parse_double(p, "<rsc_disk_bound>", wu.rsc_disk_bound)) {
continue;
} else if (parse_int(p, "<batch>", wu.batch)) {
continue;
} else if (parse_int(p, "<delay_bound>", wu.delay_bound)) {
continue;
} else if (parse_int(p, "<min_quorum>", wu.min_quorum)) {
continue;
} else if (parse_int(p, "<target_nresults>", wu.target_nresults)) {
continue;
} else if (parse_int(p, "<max_error_results>", wu.max_error_results)) {
continue;
} else if (parse_int(p, "<max_total_results>", wu.max_total_results)) {
continue;
} else if (parse_int(p, "<max_success_results>", wu.max_success_results)) {
continue;
} else {
out += p;
out += "\n";
}
}
if (!found) {
fprintf(stderr, "process_wu_template: bad WU template - no <workunit>\n");
return -1;
}
if (nfiles_parsed != ninfiles) {
fprintf(stderr,
"process_wu_template: %d input files listed, but template has %d\n",
ninfiles, nfiles_parsed
);
return -1;
}
if (out.size() > sizeof(wu.xml_doc)-1) {
fprintf(stderr,
"create_work: WU XML field is too long (%d bytes; max is %d)\n",
out.size(), sizeof(wu.xml_doc)-1
);
return ERR_BUFFER_OVERFLOW;
}
strcpy(wu.xml_doc, out.c_str());
return 0;
}
// initialize an about-to-be-created result, given its WU
//
static void initialize_result(DB_RESULT& result, WORKUNIT& wu) {
result.id = 0;
result.create_time = time(0);
result.workunitid = wu.id;
result.server_state = RESULT_SERVER_STATE_UNSENT;
result.hostid = 0;
result.report_deadline = 0;
result.sent_time = 0;
result.received_time = 0;
result.client_state = 0;
result.cpu_time = 0;
strcpy(result.xml_doc_out, "");
strcpy(result.stderr_out, "");
result.outcome = RESULT_OUTCOME_INIT;
result.file_delete_state = ASSIMILATE_INIT;
result.validate_state = VALIDATE_STATE_INIT;
result.claimed_credit = 0;
result.granted_credit = 0;
result.appid = wu.appid;
result.priority = wu.priority;
result.batch = wu.batch;
}
int create_result_ti(
TRANSITIONER_ITEM& ti,
char* result_template_filename,
char* result_name_suffix,
R_RSA_PRIVATE_KEY& key,
SCHED_CONFIG& config_loc,
char* query_string,
// if nonzero, write value list here; else do insert
int priority_increase
) {
WORKUNIT wu;
// copy relevant fields from TRANSITIONER_ITEM to WORKUNIT
//
strcpy(wu.name, ti.name);
wu.id = ti.id;
wu.appid = ti.appid;
wu.priority = ti.priority;
wu.batch = ti.batch;
return create_result(
wu,
result_template_filename,
result_name_suffix,
key,
config_loc,
query_string,
priority_increase
);
}
// Create a new result for the given WU.
// This is called ONLY from the transitioner
//
int create_result(
WORKUNIT& wu,
char* result_template_filename,
char* result_name_suffix,
R_RSA_PRIVATE_KEY& key,
SCHED_CONFIG& config_loc,
char* query_string,
// if nonzero, write value list here; else do insert
int priority_increase
) {
DB_RESULT result;
char base_outfile_name[256];
char result_template[BLOB_SIZE];
int retval;
result.clear();
initialize_result(result, wu);
result.priority = result.priority + priority_increase;
sprintf(result.name, "%s_%s", wu.name, result_name_suffix);
sprintf(base_outfile_name, "%s_", result.name);
retval = read_filename(
result_template_filename, result_template, sizeof(result_template)
);
if (retval) {
fprintf(stderr,
"Failed to read result template file '%s': %d\n",
result_template_filename, retval
);
return retval;
}
retval = process_result_template(
result_template, key, base_outfile_name, config_loc
);
if (retval) {
fprintf(stderr, "process_result_template() error: %d\n", retval);
}
if (strlen(result_template) > sizeof(result.xml_doc_in)-1) {
fprintf(stderr,
"result XML doc is too long: %d bytes, max is %d\n",
strlen(result_template), sizeof(result.xml_doc_in)-1
);
return ERR_BUFFER_OVERFLOW;
}
strlcpy(result.xml_doc_in, result_template, sizeof(result.xml_doc_in));
result.random = lrand48();
if (query_string) {
result.db_print_values(query_string);
} else {
retval = result.insert();
if (retval) {
fprintf(stderr, "result.insert(): %d\n", retval);
return retval;
}
}
// if using locality scheduling, advertise data file
// associated with this newly-created result
//
if (config_loc.locality_scheduling) {
char datafilename[512];
char *last=strstr(result.name, "__");
if (result.name<last && last<(result.name+255)) {
sprintf(datafilename, "../locality_scheduling/working_set_removal/");
strncat(datafilename, result.name, last-result.name);
unlink(datafilename);
sprintf(datafilename, "../locality_scheduling/work_available/");
strncat(datafilename, result.name, last-result.name);
boinc_touch_file(datafilename);
}
}
return 0;
}
// make sure a WU's input files are actually there
//
int check_files(char** infiles, int ninfiles, SCHED_CONFIG& config_loc) {
int i;
char path[256];
for (i=0; i<ninfiles; i++) {
dir_hier_path(
infiles[i], config_loc.download_dir, config_loc.uldl_dir_fanout, path
);
if (!boinc_file_exists(path)) {
return 1;
}
}
return 0;
}
int create_work(
DB_WORKUNIT& wu,
const char* _wu_template,
const char* result_template_filename,
const char* result_template_filepath,
const char** infiles,
int ninfiles,
SCHED_CONFIG& config_loc,
const char* command_line,
const char* additional_xml
) {
int retval;
char _result_template[BLOB_SIZE];
char wu_template[BLOB_SIZE];
#if 0
retval = check_files(infiles, ninfiles, config_loc);
if (retval) {
fprintf(stderr, "Missing input file: %s\n", infiles[0]);
return -1;
}
#endif
strcpy(wu_template, _wu_template);
wu.create_time = time(0);
retval = process_wu_template(
wu, wu_template, infiles, ninfiles, config_loc, command_line, additional_xml
);
if (retval) {
fprintf(stderr, "process_wu_template: %d\n", retval);
return retval;
}
retval = read_filename(
result_template_filepath, _result_template, sizeof(_result_template)
);
if (retval) {
fprintf(stderr, "create_work: can't read result template file %s\n", result_template_filepath);
return retval;
}
if (strlen(result_template_filename) > sizeof(wu.result_template_file)-1) {
fprintf(stderr, "result template filename is too big: %d bytes, max is %d\n",
strlen(result_template_filename), sizeof(wu.result_template_file)-1
);
return ERR_BUFFER_OVERFLOW;
}
strlcpy(wu.result_template_file, result_template_filename, sizeof(wu.result_template_file));
if (wu.rsc_fpops_est == 0) {
fprintf(stderr, "no rsc_fpops_est given; can't create job\n");
return ERR_NO_OPTION;
}
if (wu.rsc_fpops_bound == 0) {
fprintf(stderr, "no rsc_fpops_bound given; can't create job\n");
return ERR_NO_OPTION;
}
if (wu.rsc_disk_bound == 0) {
fprintf(stderr, "no rsc_disk_bound given; can't create job\n");
return ERR_NO_OPTION;
}
if (wu.target_nresults == 0) {
fprintf(stderr, "no target_nresults given; can't create job\n");
return ERR_NO_OPTION;
}
if (wu.max_error_results == 0) {
fprintf(stderr, "no max_error_results given; can't create job\n");
return ERR_NO_OPTION;
}
if (wu.max_total_results == 0) {
fprintf(stderr, "no max_total_results given; can't create job\n");
return ERR_NO_OPTION;
}
if (wu.max_success_results == 0) {
fprintf(stderr, "no max_success_results given; can't create job\n");
return ERR_NO_OPTION;
}
if (strstr(wu.name, ASSIGNED_WU_STR)) {
wu.transition_time = INT_MAX;
} else {
wu.transition_time = time(0);
}
if (wu.id) {
retval = wu.update();
if (retval) {
fprintf(stderr, "create_work: workunit.update() %d\n", retval);
return retval;
}
} else {
retval = wu.insert();
if (retval) {
fprintf(stderr, "create_work: workunit.insert() %d\n", retval);
return retval;
}
wu.id = boinc_db.insert_id();
}
return 0;
}
const char *BOINC_RCSID_b5f8b10eb5 = "$Id$";
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