src/xstat/xstat_fs.h

   1 /*
   2  * Copyright 2000, International Business Machines Corporation and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 #ifndef _xstat_fs_h_
  11 #define _xstat_fs_h_  1
  12
  13 /*------------------------------------------------------------------------
  14  * xstat_fs.h
  15  *
  16  * Interface to the AFS File Server extended statistics facility.  With
  17  * the routines defined here, the importer can gather extended statistics
  18  * from the given group of File Servers at regular intervals, or force
  19  * immediate collection.
  20  *
  21  *------------------------------------------------------------------------*/
  22
  23 #include <sys/types.h>          /*Basic system types */
  24 #ifndef AFS_NT40_ENV
  25 #ifndef IPPROTO_IP
  26 #include <netinet/in.h>         /*Internet definitions */
  27 #endif
  28
  29 #ifndef _netdb_h_
  30 #define _netdb_h_
  31 #include <netdb.h>              /*Network database library */
  32 #endif
  33
  34 #ifndef _socket_h_
  35 #define _socket_h_
  36 #include <sys/socket.h>         /*Socket definitions */
  37 #endif
  38 #endif /* AFS_NT40_ENV */
  39
  40 #include <rx/rx.h>              /*Rx definitions */
  41 #include <afs/afsint.h>         /*AFS FileServer interface */
  42 #define FSINT_COMMON_XG         /* to allow the inclusion of
  43                                  * xstat_cm.h with this file in an application. */
  44 #include <afs/fs_stats.h>       /*AFS FileServer statistics interface */
  45
  46
  47 /*
  48  * ---------------------- Exported definitions ------------------------
  49  */
  50 /*
  51  * Define the initialization flags used within the xstat_fs_Init() call.
  52  *      XSTAT_FS_INITFLAG_DEBUGGING     Turn debugging output on?
  53  *      XSTAT_FS_INITFLAG_ONE_SHOT      Do a one-shot collection?
  54  */
  55 #define XSTAT_FS_INITFLAG_DEBUGGING     0x1
  56 #define XSTAT_FS_INITFLAG_ONE_SHOT      0x2
  57
  58
  59 /*
  60  * ----------------------- Exported structures ------------------------
  61  */
  62 /*
  63  * Connection information per File Server host being probed.
  64  */
  65 struct xstat_fs_ConnectionInfo {
  66     struct sockaddr_in skt;     /*Socket info */
  67     struct rx_connection *rxconn;       /*Rx connection */
  68     char hostName[256];         /*Computed hostname */
  69 };
  70
  71 /*
  72  * The results of a probe of one of the File Servers in the set being
  73  * watched.
  74  */
  75 struct xstat_fs_ProbeResults {
  76     int probeNum;               /*Probe number */
  77     afs_int32 probeTime;        /*Time probe initiated */
  78     struct xstat_fs_ConnectionInfo *connP;      /*Connection polled */
  79     afs_int32 collectionNumber; /*Collection received */
  80     AFS_CollData data;          /*Ptr to data collected */
  81     int probeOK;                /*Latest probe successful? */
  82 };
  83
  84 /*
  85  * ------------------- Externally-visible variables -------------------
  86  */
  87 extern int xstat_fs_numServers; /*# connected servers */
  88 extern struct xstat_fs_ConnectionInfo
  89  *xstat_fs_ConnInfo;            /*Ptr to connections */
  90 extern int numCollections;      /*Num data collections */
  91 extern struct xstat_fs_ProbeResults
  92   xstat_fs_Results;             /*Latest probe results */
  93 extern char terminationEvent;   /*One-shot termination event */
  94
  95 /*
  96  * ------------------------ Exported functions ------------------------
  97  */
  98 extern int xstat_fs_Init(int, struct sockaddr_in *, int, int (*)(void),
  99                          int, int, afs_int32 *);
 100     /*
 101      * Summary:
 102      *    Initialize the xstat_fs module: set up Rx connections to the
 103      *    given set of File Servers, start up the probe and callback LWPs,
 104      *    and associate the routine to be called when a probe completes.
 105      *    Also, let it know which collections you're interested in.
 106      *
 107      * Args:
 108      *    int a_numServers                  : Num. servers to connect.
 109      *    struct sockaddr_in *a_socketArray : Array of server sockets.
 110      *    int a_ProbeFreqInSecs             : Probe frequency in seconds.
 111      *    int (*a_ProbeHandler)(void)       : Ptr to probe handler fcn.
 112      *    int a_flags                       : Various flags.
 113      *    int a_numCollections              : Number of collections desired.
 114      *    afs_int32 *a_collIDP              : Ptr to collection IDs.
 115      *
 116      * Returns:
 117      *    0 on success,
 118      *    Error value otherwise.
 119      */
 120
 121 extern int xstat_fs_ForceProbeNow(void);
 122     /*
 123      * Summary:
 124      *    Force an immediate probe to the connected File Servers.
 125      *
 126      * Args:
 127      *    None.
 128      *
 129      * Returns:
 130      *    0 on success,
 131      *    Error value otherwise.
 132      */
 133
 134 extern int xstat_fs_Cleanup(int);
 135     /*
 136      * Summary:
 137      *    Clean up our memory and connection state.
 138      *
 139      * Args:
 140      *    int a_releaseMem : Should we free up malloc'ed areas?
 141      *
 142      * Returns:
 143      *    0 on total success,
 144      *    -1 if the module was never initialized, or there was a problem
 145      *          with the xstat_fs connection array.
 146      */
 147
 148 /*
 149  * Decode the full performance statistics collection data.
 150  */
 151 extern int xstat_fs_DecodeFullPerfStats(struct fs_stats_FullPerfStats **stats,
 152                                         afs_int32 * ain, afs_int32 alen,
 153                                         struct fs_stats_FullPerfStats
 154                                         *buffer);
 155
 156 #endif /* _xstat_fs_h_ */