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/*
* Copyright (c) 2016 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <glusterfs/glusterfs.h>
#include "glfs-internal.h"
#include "rpc-clnt.h"
#include "protocol-common.h"
#include "xdr-generic.h"
#include "glusterd1-xdr.h"
/* In seconds */
#define CONNECT_TIMEOUT 60
#define REPLY_TIMEOUT 120
int done = 0;
int rpc_status;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
struct rpc_clnt_procedure gf_attach_actors[GLUSTERD_BRICK_MAXVALUE] = {
[GLUSTERD_BRICK_NULL] = {"NULL", NULL},
[GLUSTERD_BRICK_OP] = {"BRICK_OP", NULL},
};
struct rpc_clnt_program gf_attach_prog = {
.progname = "brick operations",
.prognum = GD_BRICK_PROGRAM,
.progver = GD_BRICK_VERSION,
.proctable = gf_attach_actors,
.numproc = GLUSTERD_BRICK_MAXVALUE,
};
int32_t
my_callback(struct rpc_req *req, struct iovec *iov, int count, void *frame)
{
pthread_mutex_lock(&mutex);
rpc_status = req->rpc_status;
done = 1;
/* Signal main thread which is the only waiter */
pthread_cond_signal(&cond);
pthread_mutex_unlock(&mutex);
return 0;
}
/* copied from gd_syncop_submit_request */
int
send_brick_req(xlator_t *this, struct rpc_clnt *rpc, char *path, int op)
{
int ret = -1;
struct timespec ts;
struct iobuf *iobuf = NULL;
struct iobref *iobref = NULL;
struct iovec iov = {
0,
};
ssize_t req_size = 0;
call_frame_t *frame = NULL;
gd1_mgmt_brick_op_req brick_req;
void *req = &brick_req;
brick_req.op = op;
brick_req.name = path;
brick_req.input.input_val = NULL;
brick_req.input.input_len = 0;
brick_req.dict.dict_val = NULL;
brick_req.dict.dict_len = 0;
req_size = xdr_sizeof((xdrproc_t)xdr_gd1_mgmt_brick_op_req, req);
iobuf = iobuf_get2(rpc->ctx->iobuf_pool, req_size);
if (!iobuf)
goto out;
iobref = iobref_new();
if (!iobref)
goto out;
iobref_add(iobref, iobuf);
iov.iov_base = iobuf->ptr;
iov.iov_len = iobuf_pagesize(iobuf);
/* Create the xdr payload */
ret = xdr_serialize_generic(iov, req, (xdrproc_t)xdr_gd1_mgmt_brick_op_req);
if (ret == -1)
goto out;
iov.iov_len = ret;
/* Wait for connection */
timespec_now_realtime(&ts);
ts.tv_sec += CONNECT_TIMEOUT;
pthread_mutex_lock(&rpc->conn.lock);
{
while (!rpc->conn.connected)
if (pthread_cond_timedwait(&rpc->conn.cond, &rpc->conn.lock, &ts) ==
ETIMEDOUT) {
fprintf(stderr, "timeout waiting for RPC connection\n");
pthread_mutex_unlock(&rpc->conn.lock);
return EXIT_FAILURE;
}
}
pthread_mutex_unlock(&rpc->conn.lock);
frame = create_frame(this, this->ctx->pool);
if (!frame) {
ret = -1;
goto out;
}
/* Send the msg */
ret = rpc_clnt_submit(rpc, &gf_attach_prog, op, my_callback, &iov, 1, NULL,
0, iobref, frame, NULL, 0, NULL, 0, NULL);
if (!ret) {
/* OK, wait for callback */
timespec_now_realtime(&ts);
ts.tv_sec += REPLY_TIMEOUT;
pthread_mutex_lock(&mutex);
{
while (!done)
if (pthread_cond_timedwait(&cond, &mutex, &ts) == ETIMEDOUT) {
fprintf(stderr, "timeout waiting for RPC reply\n");
pthread_mutex_unlock(&mutex);
return EXIT_FAILURE;
}
}
pthread_mutex_unlock(&mutex);
}
out:
iobref_unref(iobref);
iobuf_unref(iobuf);
if (frame)
STACK_DESTROY(frame->root);
if (rpc_status != 0) {
fprintf(stderr, "got error %d on RPC\n", rpc_status);
return EXIT_FAILURE;
}
printf("OK\n");
return EXIT_SUCCESS;
}
int
usage(char *prog)
{
fprintf(stderr, "Usage: %s uds_path volfile_path (to attach)\n", prog);
fprintf(stderr, " %s -d uds_path brick_path (to detach)\n", prog);
return EXIT_FAILURE;
}
int
main(int argc, char *argv[])
{
glfs_t *fs;
struct rpc_clnt *rpc;
dict_t *options;
int ret;
int op = GLUSTERD_BRICK_ATTACH;
for (;;) {
switch (getopt(argc, argv, "d")) {
case 'd':
op = GLUSTERD_BRICK_TERMINATE;
break;
case -1:
goto done_parsing;
default:
return usage(argv[0]);
}
}
done_parsing:
if (optind != (argc - 2)) {
return usage(argv[0]);
}
fs = glfs_new("gf-attach");
if (!fs) {
fprintf(stderr, "glfs_new failed\n");
return EXIT_FAILURE;
}
(void)glfs_set_logging(fs, "/dev/stderr", 7);
/*
* This will actually fail because we haven't defined a volume, but
* it will do enough initialization to get us going.
*/
(void)glfs_init(fs);
options = dict_new();
if (!options) {
return EXIT_FAILURE;
}
ret = dict_set_str(options, "transport-type", "socket");
if (ret != 0) {
fprintf(stderr, "failed to set transport type\n");
return EXIT_FAILURE;
}
ret = dict_set_str(options, "transport.address-family", "unix");
if (ret != 0) {
fprintf(stderr, "failed to set address family\n");
return EXIT_FAILURE;
}
ret = dict_set_str(options, "transport.socket.connect-path", argv[optind]);
if (ret != 0) {
fprintf(stderr, "failed to set connect path\n");
return EXIT_FAILURE;
}
rpc = rpc_clnt_new(options, fs->ctx->master, "gf-attach-rpc", 0);
if (!rpc) {
fprintf(stderr, "rpc_clnt_new failed\n");
return EXIT_FAILURE;
}
if (rpc_clnt_register_notify(rpc, NULL, NULL) != 0) {
fprintf(stderr, "rpc_clnt_register_notify failed\n");
return EXIT_FAILURE;
}
if (rpc_clnt_start(rpc) != 0) {
fprintf(stderr, "rpc_clnt_start failed\n");
return EXIT_FAILURE;
}
return send_brick_req(fs->ctx->master, rpc, argv[optind + 1], op);
}
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