/*
  Copyright (c) 2008-2012 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.
*/

#ifndef _RPCSVC_COMMON_H
#define _RPCSVC_COMMON_H

#include <pthread.h>
#include <glusterfs/list.h>
#include <glusterfs/compat.h>
#include <glusterfs/glusterfs.h>
#include <glusterfs/dict.h>
#include <glusterfs/xlator.h>

typedef enum {
    RPCSVC_EVENT_ACCEPT,
    RPCSVC_EVENT_DISCONNECT,
    RPCSVC_EVENT_TRANSPORT_DESTROY,
    RPCSVC_EVENT_LISTENER_DEAD,
} rpcsvc_event_t;

struct rpcsvc_state;

typedef int (*rpcsvc_notify_t)(struct rpcsvc_state *, void *mydata,
                               rpcsvc_event_t, void *data);

struct drc_globals;
typedef struct drc_globals rpcsvc_drc_globals_t;

/* Contains global state required for all the RPC services.
 */
typedef struct rpcsvc_state {
    /* Contains list of (program, version) handlers.
     * other options.
     */

    pthread_rwlock_t rpclock;

    unsigned int memfactor;

    /* List of the authentication schemes available. */
    struct list_head authschemes;

    /* Reference to the options */
    dict_t *options;

    uid_t anonuid;
    gid_t anongid;
    glusterfs_ctx_t *ctx;

    /* list of connections which will listen for incoming connections */
    struct list_head listeners;

    /* list of programs registered with rpcsvc */
    struct list_head programs;

    /* list of notification callbacks */
    struct list_head notify;
    int notify_count;

    xlator_t *xl; /* xlator */
    void *mydata;
    rpcsvc_notify_t notifyfn;
    struct mem_pool *rxpool;
    rpcsvc_drc_globals_t *drc;

    /* per-client limit of outstanding rpc requests */
    int outstanding_rpc_limit;
    gf_boolean_t addr_namelookup;
    /* determine whether throttling is needed, by default OFF */
    gf_boolean_t throttle;
    /* Allow insecure ports. */
    gf_boolean_t allow_insecure;
    gf_boolean_t register_portmap;
    gf_boolean_t root_squash;
    gf_boolean_t all_squash;
} rpcsvc_t;

/* DRC START */
enum drc_op_type { DRC_NA = 0, DRC_IDEMPOTENT = 1, DRC_NON_IDEMPOTENT = 2 };
typedef enum drc_op_type drc_op_type_t;

enum drc_type { DRC_TYPE_NONE = 0, DRC_TYPE_IN_MEMORY = 1 };
typedef enum drc_type drc_type_t;

enum drc_lru_factor {
    DRC_LRU_5_PC = 20,
    DRC_LRU_10_PC = 10,
    DRC_LRU_25_PC = 4,
    DRC_LRU_50_PC = 2
};
typedef enum drc_lru_factor drc_lru_factor_t;

enum drc_xid_state { DRC_XID_MONOTONOUS = 0, DRC_XID_WRAPPED = 1 };
typedef enum drc_xid_state drc_xid_state_t;

enum drc_op_state { DRC_OP_IN_TRANSIT = 0, DRC_OP_CACHED = 1 };
typedef enum drc_op_state drc_op_state_t;

enum drc_policy { DRC_LRU = 0 };
typedef enum drc_policy drc_policy_t;

/* Default policies for DRC */
#define DRC_DEFAULT_TYPE DRC_TYPE_IN_MEMORY
#define DRC_DEFAULT_CACHE_SIZE 0x20000
#define DRC_DEFAULT_LRU_FACTOR DRC_LRU_25_PC

/* DRC END */

#endif /* #ifndef _RPCSVC_COMMON_H */
