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/*
Copyright (c) 2014 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 <glusterfs/xlator.h>
#include "rpc-clnt.h"
#include "glusterd.h"
#include "glusterd-conn-mgmt.h"
#include "glusterd-conn-helper.h"
#include "glusterd-utils.h"
#include "glusterd-messages.h"
int
glusterd_conn_init(glusterd_conn_t *conn, char *sockpath, int frame_timeout,
glusterd_conn_notify_t notify)
{
int ret = -1;
dict_t *options = NULL;
struct rpc_clnt *rpc = NULL;
xlator_t *this = THIS;
glusterd_svc_t *svc = NULL;
if (!this)
goto out;
options = dict_new();
if (!options)
goto out;
svc = glusterd_conn_get_svc_object(conn);
if (!svc) {
gf_msg(this->name, GF_LOG_ERROR, 0, GD_MSG_SVC_GET_FAIL,
"Failed to get the service");
goto out;
}
ret = rpc_transport_unix_options_build(options, sockpath, frame_timeout);
if (ret)
goto out;
ret = dict_set_int32n(options, "transport.socket.ignore-enoent",
SLEN("transport.socket.ignore-enoent"), 1);
if (ret)
goto out;
/* @options is free'd by rpc_transport when destroyed */
rpc = rpc_clnt_new(options, this, (char *)svc->name, 16);
if (!rpc) {
ret = -1;
goto out;
}
ret = rpc_clnt_register_notify(rpc, glusterd_conn_common_notify, conn);
if (ret)
goto out;
ret = snprintf(conn->sockpath, sizeof(conn->sockpath), "%s", sockpath);
if (ret < 0)
goto out;
else
ret = 0;
conn->frame_timeout = frame_timeout;
conn->rpc = rpc;
conn->notify = notify;
out:
if (options)
dict_unref(options);
if (ret) {
if (rpc) {
rpc_clnt_unref(rpc);
rpc = NULL;
}
}
return ret;
}
int
glusterd_conn_term(glusterd_conn_t *conn)
{
rpc_clnt_unref(conn->rpc);
return 0;
}
int
glusterd_conn_connect(glusterd_conn_t *conn)
{
return rpc_clnt_start(conn->rpc);
}
int
glusterd_conn_disconnect(glusterd_conn_t *conn)
{
rpc_clnt_disable(conn->rpc);
return 0;
}
int
__glusterd_conn_common_notify(struct rpc_clnt *rpc, void *mydata,
rpc_clnt_event_t event, void *data)
{
glusterd_conn_t *conn = mydata;
/* Silently ignoring this error, exactly like the current
* implementation */
if (!conn)
return 0;
return conn->notify(conn, event);
}
int
glusterd_conn_common_notify(struct rpc_clnt *rpc, void *mydata,
rpc_clnt_event_t event, void *data)
{
return glusterd_big_locked_notify(rpc, mydata, event, data,
__glusterd_conn_common_notify);
}
int32_t
glusterd_conn_build_socket_filepath(char *rundir, uuid_t uuid, char *socketpath,
int len)
{
char sockfilepath[PATH_MAX] = {
0,
};
snprintf(sockfilepath, sizeof(sockfilepath), "%s/run-%s", rundir,
uuid_utoa(uuid));
glusterd_set_socket_filepath(sockfilepath, socketpath, len);
return 0;
}
int
__glusterd_muxsvc_conn_common_notify(struct rpc_clnt *rpc, void *mydata,
rpc_clnt_event_t event, void *data)
{
glusterd_conf_t *conf = THIS->private;
glusterd_svc_proc_t *mux_proc = mydata;
int ret = -1;
/* Silently ignoring this error, exactly like the current
* implementation */
if (!mux_proc)
return 0;
if (event == RPC_CLNT_DESTROY) {
/*RPC_CLNT_DESTROY will only called after mux_proc detached from the
* list. So it is safe to call without lock. Processing
* RPC_CLNT_DESTROY under a lock will lead to deadlock.
*/
if (mux_proc->data) {
glusterd_volinfo_unref(mux_proc->data);
mux_proc->data = NULL;
}
GF_FREE(mux_proc);
ret = 0;
} else {
pthread_mutex_lock(&conf->attach_lock);
{
ret = mux_proc->notify(mux_proc, event);
}
pthread_mutex_unlock(&conf->attach_lock);
}
return ret;
}
int
glusterd_muxsvc_conn_common_notify(struct rpc_clnt *rpc, void *mydata,
rpc_clnt_event_t event, void *data)
{
return glusterd_big_locked_notify(rpc, mydata, event, data,
__glusterd_muxsvc_conn_common_notify);
}
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