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/*-------------------------------------------------------------------------
*
* bash_handler.c
*
* Bash script handler module of Postgres-XC configuration and operation tool.
*
* Copyright (c) 2013 Postgres-XC Development Group
*
*-------------------------------------------------------------------------
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "bash_handler.h"
#include "config.h"
#include "pgxc_ctl.h"
#include "pgxc_ctl_log.h"
extern char *pgxc_ctl_bash_script[];
extern char *pgxc_ctl_conf_prototype[];
/*
* Install bash script.
*/
void install_pgxc_ctl_bash(char *path, int read_prototype)
{
char cmd[1024];
FILE *pgxc_ctl_bash = fopen(path, "w");
int i;
elog(NOTICE, "Installing pgxc_ctl_bash script as %s.\n", path);
if (!pgxc_ctl_bash)
{
elog(ERROR, "ERROR: Could not open pgxc_ctl bash script, %s, %s\n", path, strerror(errno));
}
if (read_prototype)
{
for (i=0; pgxc_ctl_conf_prototype[i]; i++)
fprintf(pgxc_ctl_bash, "%s\n", pgxc_ctl_conf_prototype[i]);
}
for (i=0; pgxc_ctl_bash_script[i]; i++)
fprintf(pgxc_ctl_bash, "%s\n", pgxc_ctl_bash_script[i]);
fclose(pgxc_ctl_bash);
sprintf(cmd, "chmod +x %s", path);
system(cmd);
}
/*
* Uninstall bash script.
*/
void uninstall_pgxc_ctl_bash(char *path)
{
if (path)
unlink(path);
}
/*
* Run the bash script and read its output, which consists of variables needed to configure
* postgres-xc cluster in pgxc_ctl.
*
* Be careful that pgxc_ctl changes its working directory to pgxc home directory,
* typically $HOME/pgxc_ctl, which can be changed with pgxc_ctl options.
* See pgxc_ctl.c or pgxc_ctl document for details.
*/
void read_config_file(char *path, char *conf)
{
FILE *vars;
char cmd[1024];
if (conf)
sprintf(cmd, "bash %s/pgxc_ctl_bash --configure %s print_values", path, conf);
else
sprintf(cmd, "bash %s/pgxc_ctl_bash print_values", path);
vars = popen(cmd, "r");
read_vars(vars);
pclose(vars);
}
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