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/*
Copyright (c) 2010 Gluster, Inc. <http://www.gluster.com>
This file is part of GlusterFS.
GlusterFS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3 of the License,
or (at your option) any later version.
GlusterFS is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see
<http://www.gnu.org/licenses/>.
*/
#ifndef _RPC_CLNT_H
#define _RPC_CLNT_H
#include "stack.h"
#include "rpc-transport.h"
#include "timer.h"
#include "xdr-common.h"
typedef enum {
RPC_CLNT_CONNECT,
RPC_CLNT_DISCONNECT,
RPC_CLNT_MSG
} rpc_clnt_event_t;
#define AUTH_GLUSTERFS 5
struct xptr_clnt;
struct rpc_req;
struct rpc_clnt;
struct rpc_clnt_config;
struct rpc_clnt_program;
typedef int (*rpc_clnt_notify_t) (struct rpc_clnt *rpc, void *mydata,
rpc_clnt_event_t fn, void *data);
typedef int (*fop_cbk_fn_t) (struct rpc_req *req, struct iovec *iov, int count,
void *myframe);
typedef int (*clnt_fn_t) (call_frame_t *fr, xlator_t *xl, void *args);
struct saved_frame {
union {
struct list_head list;
struct {
struct saved_frame *frame_next;
struct saved_frame *frame_prev;
};
};
void *capital_this;
void *frame;
struct timeval saved_at;
int32_t procnum;
struct rpc_clnt_program *prog;
fop_cbk_fn_t cbkfn;
uint64_t callid;
rpc_transport_rsp_t rsp;
};
struct saved_frames {
int64_t count;
struct saved_frame sf;
};
/* Initialized by procnum */
typedef struct rpc_clnt_procedure {
char *procname;
clnt_fn_t fn;
} rpc_clnt_procedure_t;
typedef struct rpc_clnt_program {
char *progname;
int prognum;
int progver;
rpc_clnt_procedure_t *proctable;
char **procnames;
int numproc;
} rpc_clnt_prog_t;
#define RPC_MAX_AUTH_BYTES 400
typedef struct rpc_auth_data {
int flavour;
int datalen;
char authdata[RPC_MAX_AUTH_BYTES];
} rpc_auth_data_t;
#define rpc_auth_flavour(au) ((au).flavour)
struct rpc_clnt_connection {
pthread_mutex_t lock;
rpc_transport_t *trans;
gf_timer_t *reconnect;
gf_timer_t *timer;
gf_timer_t *ping_timer;
struct rpc_clnt *rpc_clnt;
char connected;
struct saved_frames *saved_frames;
int32_t frame_timeout;
struct timeval last_sent;
struct timeval last_received;
int32_t ping_started;
};
typedef struct rpc_clnt_connection rpc_clnt_connection_t;
struct rpc_req {
rpc_clnt_connection_t *conn;
uint32_t xid;
struct iovec req[2];
int reqcnt;
struct iovec rsp[2];
int rspcnt;
struct iobuf *rsp_prochdr;
struct iobuf *rsp_procpayload;
int rpc_status;
rpc_auth_data_t verf;
rpc_clnt_prog_t *prog;
int procnum;
};
struct rpc_clnt {
pthread_mutex_t lock;
rpc_clnt_notify_t notifyfn;
rpc_clnt_connection_t conn;
void *mydata;
uint64_t xid;
glusterfs_ctx_t *ctx;
};
struct rpc_clnt_config {
int rpc_timeout;
int remote_port;
char * remote_host;
};
struct rpc_clnt * rpc_clnt_init (struct rpc_clnt_config *config,
dict_t *options, glusterfs_ctx_t *ctx,
char *name);
int rpc_clnt_register_notify (struct rpc_clnt *rpc, rpc_clnt_notify_t fn,
void *mydata);
int rpc_clnt_submit (struct rpc_clnt *rpc, rpc_clnt_prog_t *prog,
int procnum, fop_cbk_fn_t cbkfn,
struct iovec *proghdr, int proghdrcount,
struct iovec *progpayload, int progpayloadcount,
struct iobref *iobref, void *frame);
void rpc_clnt_destroy (struct rpc_clnt *rpc);
void rpc_clnt_set_connected (rpc_clnt_connection_t *conn);
void rpc_clnt_unset_connected (rpc_clnt_connection_t *conn);
void rpc_clnt_reconnect (void *trans_ptr);
#endif /* !_RPC_CLNT_H */
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