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/* Copyright (c) 2019-2020, Codership Oy. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "options.h"
#include <ctype.h> // isspace()
#include <errno.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h> // strtol()
#include <string.h> // strcmp()
/*
* getopt_long() declarations begin
*/
#define OPTS_NA no_argument
#define OPTS_RA required_argument
#define OPTS_OA optional_argument
typedef enum opt
{
OPTS_NOOPT = 0,
OPTS_ADDRESS = 'a',
OPTS_BOOTSTRAP = 'b',
OPTS_DELAY = 'd',
OPTS_DATA_DIR = 'f',
OPTS_HELP = 'h',
OPTS_PERIOD = 'i',
OPTS_MASTERS = 'm',
OPTS_NAME = 'n',
OPTS_OPTIONS = 'o',
OPTS_BASE_PORT = 'p',
OPTS_RECORDS = 'r',
OPTS_SLAVES = 's',
OPTS_BASE_HOST = 't',
OPTS_PROVIDER = 'v',
OPTS_WS_SIZE = 'w',
OPTS_OPS = 'x'
}
opt_t;
static struct option s_opts[] =
{
{ "address", OPTS_RA, NULL, OPTS_ADDRESS },
{ "bootstrap", OPTS_NA, NULL, OPTS_BOOTSTRAP },
{ "delay", OPTS_RA, NULL, OPTS_DELAY },
{ "storage", OPTS_RA, NULL, OPTS_DATA_DIR },
{ "help", OPTS_NA, NULL, OPTS_HELP },
{ "period", OPTS_RA, NULL, OPTS_PERIOD },
{ "masters", OPTS_RA, NULL, OPTS_MASTERS },
{ "name", OPTS_RA, NULL, OPTS_NAME },
{ "options", OPTS_RA, NULL, OPTS_OPTIONS, },
{ "base-port", OPTS_RA, NULL, OPTS_BASE_PORT },
{ "records", OPTS_RA, NULL, OPTS_RECORDS },
{ "slaves", OPTS_RA, NULL, OPTS_SLAVES },
{ "base-host", OPTS_RA, NULL, OPTS_BASE_HOST },
{ "provider", OPTS_RA, NULL, OPTS_PROVIDER },
{ "size", OPTS_RA, NULL, OPTS_WS_SIZE },
{ "ops", OPTS_RA, NULL, OPTS_OPS },
{ NULL, 0, NULL, 0 }
};
static const char* opts_string = "a:d:f:hi:m:n:o:p:r:s:t:v:w:x:";
/*
* getopt_long() declarations end
*/
static const struct node_options opts_defaults =
{
.provider = "none",
.address = "",
.options = "",
.name = "unnamed",
.data_dir = ".",
.base_host = "localhost",
.masters = 0,
.slaves = 1,
.ws_size = 1024,
.records = 1024*1024,
.delay = 0,
.base_port = 4567,
.period = 10,
.operations= 1,
.bootstrap = true
};
static void
opts_print_help(FILE* out, const char* prog_name)
{
fprintf(
out,
"Usage: %s [OPTION...]\n"
"\n"
" -h, --help this thing.\n"
" -v, --provider=PATH a path to wsrep provider library file.\n"
" -a, --address=STRING list of node addresses in the group.\n"
" If not set the node assumes that it is the first\n"
" node in the group (default)\n"
" -o, --options=STRING a string of wsrep provider options.\n"
" -n, --name=STRING human-readable node name.\n"
" -f, --data-dir=PATH a directory to save working data in.\n"
" Should be private to the process.\n"
" -t, --base-host=ADDRESS address of this node at which other members can\n"
" connect to it\n"
" -p, --base-port=NUM base port which the node shall listen for\n"
" connections from other members. This port will be\n"
" used for replication, port+1 for IST and port+2\n"
" for SST. Default: 4567\n"
" -m, --masters=NUM number of concurrent master workers.\n"
" -s, --slaves=NUM number of concurrent slave workers.\n"
" (can't be less than 1)\n"
" -w, --size=NUM desirable size of the resulting writesets\n"
" (approximate lower boundary). Default: 1K\n"
" -r, --records=NUM number of records in the store. Default: 1M\n"
" -x, --ops=NUM number of operations per transaction. Default: 1\n"
" -d, --delay=NUM delay in milliseconds between \"commits\"\n"
" (per master thread).\n"
" -b, --bootstrap bootstrap the cluster with this node.\n"
" Default: 'Yes' if --address is not given, 'No'\n"
" otherwise.\n"
" -i, --period period in seconds between performance stats output\n"
"\n"
, prog_name);
}
static void
opts_print_config(FILE* out, const struct node_options* opts)
{
fprintf(
out,
"Continuing with the following configuration:\n"
"provider: %s\n"
"address: %s\n"
"options: %s\n"
"name: %s\n"
"data dir: %s\n"
"base addr: %s:%ld\n"
"masters: %ld\n"
"slaves: %ld\n"
"writeset size: %ld bytes\n"
"records: %ld\n"
"operations: %ld\n"
"commit delay: %ld ms\n"
"stats period: %ld s\n"
"bootstrap: %s\n"
,
opts->provider, opts->address, opts->options, opts->name, opts->data_dir,
opts->base_host, opts->base_port,
opts->masters, opts->slaves, opts->ws_size, opts->records,
opts->operations,
opts->delay, opts->period, opts->bootstrap ? "Yes" : "No"
);
}
static int
opts_check_conversion(int cond, const char* ptr, int idx)
{
if (!cond || errno || (*ptr != '\0' && !isspace(*ptr)))
{
fprintf(stderr, "Bad value for %s option.\n", s_opts[idx].name);
return EINVAL;
}
return 0;
}
int
node_options_read(int argc, char* argv[], struct node_options* opts)
{
*opts = opts_defaults;
int opt = 0;
int opt_idx = 0;
char* endptr;
int ret = 0;
bool address_given = false;
bool bootstrap_given = false;
while ((opt = getopt_long(argc, argv, opts_string, s_opts, &opt_idx)) != -1)
{
switch (opt)
{
case OPTS_ADDRESS:
address_given = strcmp(opts->address, optarg);
opts->address = optarg;
break;
case OPTS_BOOTSTRAP:
bootstrap_given = true;
opts->bootstrap = true;
break;
case OPTS_DELAY:
opts->delay = strtol(optarg, &endptr, 10);
if ((ret = opts_check_conversion(opts->delay >= 0, endptr, opt_idx)))
goto err;
break;
case OPTS_DATA_DIR:
opts->data_dir = optarg;
break;
case OPTS_HELP:
ret = 1;
goto help;
case OPTS_PERIOD:
opts->period = strtol(optarg, &endptr, 10);
if ((ret = opts_check_conversion(opts->period > 0, endptr, opt_idx)))
goto err;
break;
case OPTS_MASTERS:
opts->masters = strtol(optarg, &endptr, 10);
if ((ret = opts_check_conversion(opts->masters >= 0, endptr,
opt_idx)))
goto err;
break;
case OPTS_NAME:
opts->name = optarg;
break;
case OPTS_OPTIONS:
opts->options = optarg;
break;
case OPTS_BASE_PORT:
opts->base_port = strtol(optarg, &endptr, 10);
if ((ret = opts_check_conversion(
opts->base_port > 0 && opts->base_port < 65536,
endptr, opt_idx)))
goto err;
break;
case OPTS_RECORDS:
opts->records = strtol(optarg, &endptr, 10);
if ((ret = opts_check_conversion(opts->records >= 0, endptr,
opt_idx)))
goto err;
break;
case OPTS_SLAVES:
opts->slaves = strtol(optarg, &endptr, 10);
if ((ret = opts_check_conversion(opts->slaves > 0, endptr, opt_idx)))
goto err;
break;
case OPTS_BASE_HOST:
opts->base_host = optarg;
break;
case OPTS_PROVIDER:
opts->provider = optarg;
break;
case OPTS_WS_SIZE:
opts->ws_size = strtol(optarg, &endptr, 10);
if ((ret = opts_check_conversion(opts->ws_size > 0, endptr,
opt_idx)))
goto err;
break;
case OPTS_OPS:
opts->operations = strtol(optarg, &endptr, 10);
if ((ret = opts_check_conversion(opts->operations >= 1, endptr,
opt_idx)))
goto err;
break;
default:
ret = EINVAL;
}
}
help:
if (ret) {
opts_print_help(stderr, argv[0]);
}
else
{
if (!bootstrap_given)
{
opts->bootstrap = !address_given;
}
opts_print_config(stdout, opts);
opts->delay *= 1000; /* convert to microseconds for usleep() */
}
err:
return ret;
}
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