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|
/*
Copyright (c) 2013-2014 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.
*/
/* rpc related syncops */
#include "rpc-clnt.h"
#include "protocol-common.h"
#include "xdr-generic.h"
#include "glusterd1-xdr.h"
#include "glusterd-syncop.h"
#include "glusterd.h"
#include "glusterd-utils.h"
#include "glusterd-locks.h"
#include "glusterd-mgmt.h"
#include "glusterd-op-sm.h"
#include "glusterd-messages.h"
static int
glusterd_mgmt_v3_null (rpcsvc_request_t *req)
{
return 0;
}
static int
glusterd_mgmt_v3_lock_send_resp (rpcsvc_request_t *req, int32_t status,
uint32_t op_errno)
{
gd1_mgmt_v3_lock_rsp rsp = {{0},};
int ret = -1;
xlator_t *this = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
rsp.op_ret = status;
if (rsp.op_ret)
rsp.op_errno = op_errno;
glusterd_get_uuid (&rsp.uuid);
ret = glusterd_submit_reply (req, &rsp, NULL, 0, NULL,
(xdrproc_t)xdr_gd1_mgmt_v3_lock_rsp);
gf_msg_debug (this->name, 0,
"Responded to mgmt_v3 lock, ret: %d", ret);
return ret;
}
static int
glusterd_synctasked_mgmt_v3_lock (rpcsvc_request_t *req,
gd1_mgmt_v3_lock_req *lock_req,
glusterd_op_lock_ctx_t *ctx)
{
int32_t ret = -1;
xlator_t *this = NULL;
uint32_t op_errno = 0;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
GF_ASSERT (ctx);
GF_ASSERT (ctx->dict);
/* Trying to acquire multiple mgmt_v3 locks */
ret = glusterd_multiple_mgmt_v3_lock (ctx->dict, ctx->uuid, &op_errno);
if (ret)
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_MGMTV3_LOCK_GET_FAIL,
"Failed to acquire mgmt_v3 locks for %s",
uuid_utoa (ctx->uuid));
ret = glusterd_mgmt_v3_lock_send_resp (req, ret, op_errno);
gf_msg_trace (this->name, 0, "Returning %d", ret);
return ret;
}
static int
glusterd_op_state_machine_mgmt_v3_lock (rpcsvc_request_t *req,
gd1_mgmt_v3_lock_req *lock_req,
glusterd_op_lock_ctx_t *ctx)
{
int32_t ret = -1;
xlator_t *this = NULL;
glusterd_op_info_t txn_op_info = {{0},};
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
glusterd_txn_opinfo_init (&txn_op_info, NULL, &lock_req->op, ctx->dict,
req);
ret = glusterd_set_txn_opinfo (&lock_req->txn_id, &txn_op_info);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_OPINFO_SET_FAIL,
"Unable to set transaction's opinfo");
goto out;
}
ret = glusterd_op_sm_inject_event (GD_OP_EVENT_LOCK,
&lock_req->txn_id, ctx);
if (ret)
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_OP_EVENT_LOCK_FAIL,
"Failed to inject event GD_OP_EVENT_LOCK");
out:
glusterd_friend_sm ();
glusterd_op_sm ();
gf_msg_trace (this->name, 0, "Returning %d", ret);
return ret;
}
static int
glusterd_handle_mgmt_v3_lock_fn (rpcsvc_request_t *req)
{
gd1_mgmt_v3_lock_req lock_req = {{0},};
int32_t ret = -1;
glusterd_op_lock_ctx_t *ctx = NULL;
xlator_t *this = NULL;
gf_boolean_t is_synctasked = _gf_false;
gf_boolean_t free_ctx = _gf_false;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
ret = xdr_to_generic (req->msg[0], &lock_req,
(xdrproc_t)xdr_gd1_mgmt_v3_lock_req);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_REQ_DECODE_FAIL, "Failed to decode lock "
"request received from peer");
req->rpc_err = GARBAGE_ARGS;
goto out;
}
gf_msg_debug (this->name, 0, "Received mgmt_v3 lock req "
"from uuid: %s", uuid_utoa (lock_req.uuid));
if (glusterd_peerinfo_find_by_uuid (lock_req.uuid) == NULL) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_PEER_NOT_FOUND, "%s doesn't "
"belong to the cluster. Ignoring request.",
uuid_utoa (lock_req.uuid));
ret = -1;
goto out;
}
ctx = GF_CALLOC (1, sizeof (*ctx), gf_gld_mt_op_lock_ctx_t);
if (!ctx) {
ret = -1;
goto out;
}
gf_uuid_copy (ctx->uuid, lock_req.uuid);
ctx->req = req;
ctx->dict = dict_new ();
if (!ctx->dict) {
ret = -1;
goto out;
}
ret = dict_unserialize (lock_req.dict.dict_val,
lock_req.dict.dict_len, &ctx->dict);
if (ret) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_DICT_UNSERIALIZE_FAIL,
"failed to unserialize the dictionary");
goto out;
}
is_synctasked = dict_get_str_boolean (ctx->dict,
"is_synctasked", _gf_false);
if (is_synctasked) {
ret = glusterd_synctasked_mgmt_v3_lock (req, &lock_req, ctx);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_MGMTV3_LOCK_GET_FAIL,
"Failed to acquire mgmt_v3_locks");
/* Ignore the return code, as it shouldn't be propagated
* from the handler function so as to avoid double
* deletion of the req
*/
ret = 0;
}
/* The above function does not take ownership of ctx.
* Therefore we need to free the ctx explicitly. */
free_ctx = _gf_true;
}
else {
/* Shouldn't ignore the return code here, and it should
* be propagated from the handler function as in failure
* case it doesn't delete the req object
*/
ret = glusterd_op_state_machine_mgmt_v3_lock (req, &lock_req,
ctx);
if (ret)
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_MGMTV3_LOCK_GET_FAIL,
"Failed to acquire mgmt_v3_locks");
}
out:
if (ctx && (ret || free_ctx)) {
if (ctx->dict)
dict_unref (ctx->dict);
GF_FREE (ctx);
}
free (lock_req.dict.dict_val);
gf_msg_trace (this->name, 0, "Returning %d", ret);
return ret;
}
static int
glusterd_mgmt_v3_pre_validate_send_resp (rpcsvc_request_t *req,
int32_t op, int32_t status,
char *op_errstr, dict_t *rsp_dict)
{
gd1_mgmt_v3_pre_val_rsp rsp = {{0},};
int ret = -1;
xlator_t *this = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
rsp.op_ret = status;
glusterd_get_uuid (&rsp.uuid);
rsp.op = op;
if (op_errstr)
rsp.op_errstr = op_errstr;
else
rsp.op_errstr = "";
ret = dict_allocate_and_serialize (rsp_dict, &rsp.dict.dict_val,
&rsp.dict.dict_len);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_SERL_LENGTH_GET_FAIL,
"failed to get serialized length of dict");
goto out;
}
ret = glusterd_submit_reply (req, &rsp, NULL, 0, NULL,
(xdrproc_t)xdr_gd1_mgmt_v3_pre_val_rsp);
GF_FREE (rsp.dict.dict_val);
out:
gf_msg_debug (this->name, 0,
"Responded to pre validation, ret: %d", ret);
return ret;
}
static int
glusterd_handle_pre_validate_fn (rpcsvc_request_t *req)
{
int32_t ret = -1;
gd1_mgmt_v3_pre_val_req op_req = {{0},};
xlator_t *this = NULL;
char *op_errstr = NULL;
dict_t *dict = NULL;
dict_t *rsp_dict = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
ret = xdr_to_generic (req->msg[0], &op_req,
(xdrproc_t)xdr_gd1_mgmt_v3_pre_val_req);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_REQ_DECODE_FAIL,
"Failed to decode pre validation "
"request received from peer");
req->rpc_err = GARBAGE_ARGS;
goto out;
}
if (glusterd_peerinfo_find_by_uuid (op_req.uuid) == NULL) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_PEER_NOT_FOUND, "%s doesn't "
"belong to the cluster. Ignoring request.",
uuid_utoa (op_req.uuid));
ret = -1;
goto out;
}
dict = dict_new ();
if (!dict)
goto out;
ret = dict_unserialize (op_req.dict.dict_val,
op_req.dict.dict_len, &dict);
if (ret) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_DICT_UNSERIALIZE_FAIL,
"failed to unserialize the dictionary");
goto out;
}
rsp_dict = dict_new ();
if (!rsp_dict) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_CREATE_FAIL,
"Failed to get new dictionary");
return -1;
}
ret = gd_mgmt_v3_pre_validate_fn (op_req.op, dict, &op_errstr,
rsp_dict);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_PRE_VALIDATION_FAIL,
"Pre Validation failed on operation %s",
gd_op_list[op_req.op]);
}
ret = glusterd_mgmt_v3_pre_validate_send_resp (req, op_req.op,
ret, op_errstr,
rsp_dict);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_MGMTV3_OP_RESP_FAIL,
"Failed to send Pre Validation "
"response for operation %s",
gd_op_list[op_req.op]);
goto out;
}
out:
if (op_errstr && (strcmp (op_errstr, "")))
GF_FREE (op_errstr);
free (op_req.dict.dict_val);
if (dict)
dict_unref (dict);
if (rsp_dict)
dict_unref (rsp_dict);
/* Return 0 from handler to avoid double deletion of req obj */
return 0;
}
static int
glusterd_mgmt_v3_brick_op_send_resp (rpcsvc_request_t *req,
int32_t op, int32_t status,
char *op_errstr, dict_t *rsp_dict)
{
gd1_mgmt_v3_brick_op_rsp rsp = {{0},};
int ret = -1;
xlator_t *this = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
rsp.op_ret = status;
glusterd_get_uuid (&rsp.uuid);
rsp.op = op;
if (op_errstr)
rsp.op_errstr = op_errstr;
else
rsp.op_errstr = "";
ret = dict_allocate_and_serialize (rsp_dict, &rsp.dict.dict_val,
&rsp.dict.dict_len);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_SERL_LENGTH_GET_FAIL,
"failed to get serialized length of dict");
goto out;
}
ret = glusterd_submit_reply (req, &rsp, NULL, 0, NULL,
(xdrproc_t)xdr_gd1_mgmt_v3_brick_op_rsp);
GF_FREE (rsp.dict.dict_val);
out:
gf_msg_debug (this->name, 0,
"Responded to brick op, ret: %d", ret);
return ret;
}
static int
glusterd_handle_brick_op_fn (rpcsvc_request_t *req)
{
int32_t ret = -1;
gd1_mgmt_v3_brick_op_req op_req = {{0},};
xlator_t *this = NULL;
char *op_errstr = NULL;
dict_t *dict = NULL;
dict_t *rsp_dict = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
ret = xdr_to_generic (req->msg[0], &op_req,
(xdrproc_t)xdr_gd1_mgmt_v3_brick_op_req);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_REQ_DECODE_FAIL, "Failed to decode brick op "
"request received from peer");
req->rpc_err = GARBAGE_ARGS;
goto out;
}
if (glusterd_peerinfo_find_by_uuid (op_req.uuid) == NULL) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_PEER_NOT_FOUND, "%s doesn't "
"belong to the cluster. Ignoring request.",
uuid_utoa (op_req.uuid));
ret = -1;
goto out;
}
dict = dict_new ();
if (!dict)
goto out;
ret = dict_unserialize (op_req.dict.dict_val,
op_req.dict.dict_len, &dict);
if (ret) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_DICT_UNSERIALIZE_FAIL,
"failed to unserialize the dictionary");
goto out;
}
rsp_dict = dict_new ();
if (!rsp_dict) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_CREATE_FAIL,
"Failed to get new dictionary");
return -1;
}
ret = gd_mgmt_v3_brick_op_fn (op_req.op, dict, &op_errstr,
rsp_dict);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_BRICK_OP_FAIL,
"Brick Op failed on operation %s",
gd_op_list[op_req.op]);
}
ret = glusterd_mgmt_v3_brick_op_send_resp (req, op_req.op,
ret, op_errstr,
rsp_dict);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_PRE_VALD_RESP_FAIL,
"Failed to send brick op "
"response for operation %s",
gd_op_list[op_req.op]);
goto out;
}
out:
if (op_errstr && (strcmp (op_errstr, "")))
GF_FREE (op_errstr);
free (op_req.dict.dict_val);
if (dict)
dict_unref (dict);
if (rsp_dict)
dict_unref (rsp_dict);
/* Return 0 from handler to avoid double deletion of req obj */
return 0;
}
static int
glusterd_mgmt_v3_commit_send_resp (rpcsvc_request_t *req,
int32_t op, int32_t status,
char *op_errstr, dict_t *rsp_dict)
{
gd1_mgmt_v3_commit_rsp rsp = {{0},};
int ret = -1;
xlator_t *this = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
rsp.op_ret = status;
glusterd_get_uuid (&rsp.uuid);
rsp.op = op;
if (op_errstr)
rsp.op_errstr = op_errstr;
else
rsp.op_errstr = "";
ret = dict_allocate_and_serialize (rsp_dict, &rsp.dict.dict_val,
&rsp.dict.dict_len);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_SERL_LENGTH_GET_FAIL,
"failed to get serialized length of dict");
goto out;
}
ret = glusterd_submit_reply (req, &rsp, NULL, 0, NULL,
(xdrproc_t)xdr_gd1_mgmt_v3_commit_rsp);
GF_FREE (rsp.dict.dict_val);
out:
gf_msg_debug (this->name, 0, "Responded to commit, ret: %d", ret);
return ret;
}
static int
glusterd_handle_commit_fn (rpcsvc_request_t *req)
{
int32_t ret = -1;
gd1_mgmt_v3_commit_req op_req = {{0},};
xlator_t *this = NULL;
char *op_errstr = NULL;
dict_t *dict = NULL;
dict_t *rsp_dict = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
ret = xdr_to_generic (req->msg[0], &op_req,
(xdrproc_t)xdr_gd1_mgmt_v3_commit_req);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_REQ_DECODE_FAIL, "Failed to decode commit "
"request received from peer");
req->rpc_err = GARBAGE_ARGS;
goto out;
}
if (glusterd_peerinfo_find_by_uuid (op_req.uuid) == NULL) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_PEER_NOT_FOUND, "%s doesn't "
"belong to the cluster. Ignoring request.",
uuid_utoa (op_req.uuid));
ret = -1;
goto out;
}
dict = dict_new ();
if (!dict)
goto out;
ret = dict_unserialize (op_req.dict.dict_val,
op_req.dict.dict_len, &dict);
if (ret) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_DICT_UNSERIALIZE_FAIL,
"failed to unserialize the dictionary");
goto out;
}
rsp_dict = dict_new ();
if (!rsp_dict) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_CREATE_FAIL,
"Failed to get new dictionary");
return -1;
}
ret = gd_mgmt_v3_commit_fn (op_req.op, dict, &op_errstr,
rsp_dict);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_COMMIT_OP_FAIL,
"commit failed on operation %s",
gd_op_list[op_req.op]);
}
ret = glusterd_mgmt_v3_commit_send_resp (req, op_req.op,
ret, op_errstr,
rsp_dict);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_MGMTV3_OP_RESP_FAIL,
"Failed to send commit "
"response for operation %s",
gd_op_list[op_req.op]);
goto out;
}
out:
if (op_errstr && (strcmp (op_errstr, "")))
GF_FREE (op_errstr);
free (op_req.dict.dict_val);
if (dict)
dict_unref (dict);
if (rsp_dict)
dict_unref (rsp_dict);
/* Return 0 from handler to avoid double deletion of req obj */
return 0;
}
static int
glusterd_mgmt_v3_post_validate_send_resp (rpcsvc_request_t *req,
int32_t op, int32_t status,
char *op_errstr, dict_t *rsp_dict)
{
gd1_mgmt_v3_post_val_rsp rsp = {{0},};
int ret = -1;
xlator_t *this = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
rsp.op_ret = status;
glusterd_get_uuid (&rsp.uuid);
rsp.op = op;
if (op_errstr)
rsp.op_errstr = op_errstr;
else
rsp.op_errstr = "";
ret = dict_allocate_and_serialize (rsp_dict, &rsp.dict.dict_val,
&rsp.dict.dict_len);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_SERL_LENGTH_GET_FAIL,
"failed to get serialized length of dict");
goto out;
}
ret = glusterd_submit_reply (req, &rsp, NULL, 0, NULL,
(xdrproc_t)xdr_gd1_mgmt_v3_post_val_rsp);
GF_FREE (rsp.dict.dict_val);
out:
gf_msg_debug (this->name, 0,
"Responded to post validation, ret: %d", ret);
return ret;
}
static int
glusterd_handle_post_validate_fn (rpcsvc_request_t *req)
{
int32_t ret = -1;
gd1_mgmt_v3_post_val_req op_req = {{0},};
xlator_t *this = NULL;
char *op_errstr = NULL;
dict_t *dict = NULL;
dict_t *rsp_dict = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
ret = xdr_to_generic (req->msg[0], &op_req,
(xdrproc_t)xdr_gd1_mgmt_v3_post_val_req);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_REQ_DECODE_FAIL,
"Failed to decode post validation "
"request received from peer");
req->rpc_err = GARBAGE_ARGS;
goto out;
}
if (glusterd_peerinfo_find_by_uuid (op_req.uuid) == NULL) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_PEER_NOT_FOUND, "%s doesn't "
"belong to the cluster. Ignoring request.",
uuid_utoa (op_req.uuid));
ret = -1;
goto out;
}
dict = dict_new ();
if (!dict)
goto out;
ret = dict_unserialize (op_req.dict.dict_val,
op_req.dict.dict_len, &dict);
if (ret) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_DICT_UNSERIALIZE_FAIL,
"failed to unserialize the dictionary");
goto out;
}
rsp_dict = dict_new ();
if (!rsp_dict) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_CREATE_FAIL,
"Failed to get new dictionary");
return -1;
}
ret = gd_mgmt_v3_post_validate_fn (op_req.op, op_req.op_ret, dict,
&op_errstr, rsp_dict);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_POST_VALIDATION_FAIL,
"Post Validation failed on operation %s",
gd_op_list[op_req.op]);
}
ret = glusterd_mgmt_v3_post_validate_send_resp (req, op_req.op,
ret, op_errstr,
rsp_dict);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_MGMTV3_OP_RESP_FAIL,
"Failed to send Post Validation "
"response for operation %s",
gd_op_list[op_req.op]);
goto out;
}
out:
if (op_errstr && (strcmp (op_errstr, "")))
GF_FREE (op_errstr);
free (op_req.dict.dict_val);
if (dict)
dict_unref (dict);
if (rsp_dict)
dict_unref (rsp_dict);
/* Return 0 from handler to avoid double deletion of req obj */
return 0;
}
static int
glusterd_mgmt_v3_unlock_send_resp (rpcsvc_request_t *req, int32_t status)
{
gd1_mgmt_v3_unlock_rsp rsp = {{0},};
int ret = -1;
xlator_t *this = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
rsp.op_ret = status;
if (rsp.op_ret)
rsp.op_errno = errno;
glusterd_get_uuid (&rsp.uuid);
ret = glusterd_submit_reply (req, &rsp, NULL, 0, NULL,
(xdrproc_t)xdr_gd1_mgmt_v3_unlock_rsp);
gf_msg_debug (this->name, 0,
"Responded to mgmt_v3 unlock, ret: %d", ret);
return ret;
}
static int
glusterd_syctasked_mgmt_v3_unlock (rpcsvc_request_t *req,
gd1_mgmt_v3_unlock_req *unlock_req,
glusterd_op_lock_ctx_t *ctx)
{
int32_t ret = -1;
xlator_t *this = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
GF_ASSERT (ctx);
/* Trying to release multiple mgmt_v3 locks */
ret = glusterd_multiple_mgmt_v3_unlock (ctx->dict, ctx->uuid);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_MGMTV3_UNLOCK_FAIL,
"Failed to release mgmt_v3 locks for %s",
uuid_utoa(ctx->uuid));
}
ret = glusterd_mgmt_v3_unlock_send_resp (req, ret);
gf_msg_trace (this->name, 0, "Returning %d", ret);
return ret;
}
static int
glusterd_op_state_machine_mgmt_v3_unlock (rpcsvc_request_t *req,
gd1_mgmt_v3_unlock_req *lock_req,
glusterd_op_lock_ctx_t *ctx)
{
int32_t ret = -1;
xlator_t *this = NULL;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
ret = glusterd_op_sm_inject_event (GD_OP_EVENT_UNLOCK,
&lock_req->txn_id, ctx);
if (ret)
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_OP_EVENT_UNLOCK_FAIL,
"Failed to inject event GD_OP_EVENT_UNLOCK");
glusterd_friend_sm ();
glusterd_op_sm ();
gf_msg_trace (this->name, 0, "Returning %d", ret);
return ret;
}
static int
glusterd_handle_mgmt_v3_unlock_fn (rpcsvc_request_t *req)
{
gd1_mgmt_v3_unlock_req lock_req = {{0},};
int32_t ret = -1;
glusterd_op_lock_ctx_t *ctx = NULL;
xlator_t *this = NULL;
gf_boolean_t is_synctasked = _gf_false;
gf_boolean_t free_ctx = _gf_false;
this = THIS;
GF_ASSERT (this);
GF_ASSERT (req);
ret = xdr_to_generic (req->msg[0], &lock_req,
(xdrproc_t)xdr_gd1_mgmt_v3_unlock_req);
if (ret < 0) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_REQ_DECODE_FAIL, "Failed to decode unlock "
"request received from peer");
req->rpc_err = GARBAGE_ARGS;
goto out;
}
gf_msg_debug (this->name, 0, "Received volume unlock req "
"from uuid: %s", uuid_utoa (lock_req.uuid));
if (glusterd_peerinfo_find_by_uuid (lock_req.uuid) == NULL) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_PEER_NOT_FOUND, "%s doesn't "
"belong to the cluster. Ignoring request.",
uuid_utoa (lock_req.uuid));
ret = -1;
goto out;
}
ctx = GF_CALLOC (1, sizeof (*ctx), gf_gld_mt_op_lock_ctx_t);
if (!ctx) {
ret = -1;
goto out;
}
gf_uuid_copy (ctx->uuid, lock_req.uuid);
ctx->req = req;
ctx->dict = dict_new ();
if (!ctx->dict) {
ret = -1;
goto out;
}
ret = dict_unserialize (lock_req.dict.dict_val,
lock_req.dict.dict_len, &ctx->dict);
if (ret) {
gf_msg (this->name, GF_LOG_WARNING, 0,
GD_MSG_DICT_UNSERIALIZE_FAIL,
"failed to unserialize the dictionary");
goto out;
}
is_synctasked = dict_get_str_boolean (ctx->dict,
"is_synctasked", _gf_false);
if (is_synctasked) {
ret = glusterd_syctasked_mgmt_v3_unlock (req, &lock_req, ctx);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_MGMTV3_UNLOCK_FAIL,
"Failed to release mgmt_v3_locks");
/* Ignore the return code, as it shouldn't be propagated
* from the handler function so as to avoid double
* deletion of the req
*/
ret = 0;
}
/* The above function does not take ownership of ctx.
* Therefore we need to free the ctx explicitly. */
free_ctx = _gf_true;
}
else {
/* Shouldn't ignore the return code here, and it should
* be propagated from the handler function as in failure
* case it doesn't delete the req object
*/
ret = glusterd_op_state_machine_mgmt_v3_unlock (req, &lock_req,
ctx);
if (ret)
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_MGMTV3_UNLOCK_FAIL,
"Failed to release mgmt_v3_locks");
}
out:
if (ctx && (ret || free_ctx)) {
if (ctx->dict)
dict_unref (ctx->dict);
GF_FREE (ctx);
}
free (lock_req.dict.dict_val);
gf_msg_trace (this->name, 0, "Returning %d", ret);
return ret;
}
int
glusterd_handle_mgmt_v3_lock (rpcsvc_request_t *req)
{
return glusterd_big_locked_handler (req,
glusterd_handle_mgmt_v3_lock_fn);
}
static int
glusterd_handle_pre_validate (rpcsvc_request_t *req)
{
return glusterd_big_locked_handler (req,
glusterd_handle_pre_validate_fn);
}
static int
glusterd_handle_brick_op (rpcsvc_request_t *req)
{
return glusterd_big_locked_handler (req,
glusterd_handle_brick_op_fn);
}
static int
glusterd_handle_commit (rpcsvc_request_t *req)
{
return glusterd_big_locked_handler (req,
glusterd_handle_commit_fn);
}
static int
glusterd_handle_post_validate (rpcsvc_request_t *req)
{
return glusterd_big_locked_handler (req,
glusterd_handle_post_validate_fn);
}
int
glusterd_handle_mgmt_v3_unlock (rpcsvc_request_t *req)
{
return glusterd_big_locked_handler (req,
glusterd_handle_mgmt_v3_unlock_fn);
}
rpcsvc_actor_t gd_svc_mgmt_v3_actors[GLUSTERD_MGMT_V3_MAXVALUE] = {
[GLUSTERD_MGMT_V3_NULL] = { "NULL", GLUSTERD_MGMT_V3_NULL, glusterd_mgmt_v3_null, NULL, 0, DRC_NA},
[GLUSTERD_MGMT_V3_LOCK] = { "MGMT_V3_LOCK", GLUSTERD_MGMT_V3_LOCK, glusterd_handle_mgmt_v3_lock, NULL, 0, DRC_NA},
[GLUSTERD_MGMT_V3_PRE_VALIDATE] = { "PRE_VAL", GLUSTERD_MGMT_V3_PRE_VALIDATE, glusterd_handle_pre_validate, NULL, 0, DRC_NA},
[GLUSTERD_MGMT_V3_BRICK_OP] = { "BRCK_OP", GLUSTERD_MGMT_V3_BRICK_OP, glusterd_handle_brick_op, NULL, 0, DRC_NA},
[GLUSTERD_MGMT_V3_COMMIT] = { "COMMIT", GLUSTERD_MGMT_V3_COMMIT, glusterd_handle_commit, NULL, 0, DRC_NA},
[GLUSTERD_MGMT_V3_POST_VALIDATE] = { "POST_VAL", GLUSTERD_MGMT_V3_POST_VALIDATE, glusterd_handle_post_validate, NULL, 0, DRC_NA},
[GLUSTERD_MGMT_V3_UNLOCK] = { "MGMT_V3_UNLOCK", GLUSTERD_MGMT_V3_UNLOCK, glusterd_handle_mgmt_v3_unlock, NULL, 0, DRC_NA},
};
struct rpcsvc_program gd_svc_mgmt_v3_prog = {
.progname = "GlusterD svc mgmt v3",
.prognum = GD_MGMT_PROGRAM,
.progver = GD_MGMT_V3_VERSION,
.numactors = GLUSTERD_MGMT_V3_MAXVALUE,
.actors = gd_svc_mgmt_v3_actors,
.synctask = _gf_true,
};
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