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/*
Copyright (c) 2013 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include <errno.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
#include "glusterfs.h"
#include "run.h"
#include "glusterd-etcd.h"
#define GLUSTERD_ETCD_DIR "/var/lib/glusterd/etcd"
#define GLUSTERD_ETCD_CMD "/root/etcd/bin/etcd"
pid_t
start_etcd (char *this_host, char *other_host)
{
runner_t runner;
char me[256];
if (gethostname(me,sizeof(me)-1) != 0) {
gf_log (__func__, GF_LOG_ERROR, "gethostname failed?!?");
return -1;
}
me[sizeof(me)-1] = '\0';
if ((mkdir(GLUSTERD_ETCD_DIR,0700) < 0) && (errno != EEXIST)) {
gf_log (__func__, GF_LOG_ERROR,
"failed to create %s", GLUSTERD_ETCD_DIR);
return -1;
}
runinit (&runner);
runner_add_args (&runner, GLUSTERD_ETCD_CMD,
"-name", this_host,
"-data-dir", GLUSTERD_ETCD_DIR,
"-bind-addr", NULL);
runner_argprintf( &runner, "%s:4001", me);
runner_add_arg (&runner, "-peer-addr");
runner_argprintf (&runner, "%s:7001", me);
if (other_host) {
runner_add_arg (&runner, "-peers");
runner_argprintf (&runner, "%s:7001", other_host);
gf_log (__func__, GF_LOG_INFO, "starting etcd via %s", other_host);
} else {
gf_log (__func__, GF_LOG_INFO, "starting etcd standalone");
}
/*
* Runner_run would wait for it. Runner_run_nowait would not wait,
* but would detach it so thoroughly that it won't die when we do.
* Also, runner->chpid would be the PID of the transient middle
* process, not the one we might actually need to kill later. This
* seems to do exactly what we need.
*/
if (runner_start(&runner) != 0) {
gf_log (__func__, GF_LOG_ERROR,
"failed to start %s", GLUSTERD_ETCD_CMD);
return -1;
}
return runner.chpid;
}
void
stop_etcd (pid_t pid)
{
if (pid > 0) {
gf_log (__func__, GF_LOG_INFO, "killing etcd %d", pid);
(void)kill(pid,SIGKILL);
(void)waitpid(pid,NULL,0);
}
}
void
nuke_etcd_dir (void)
{
(void)runcmd("rm","-rf",GLUSTERD_ETCD_DIR,NULL);
}
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