src/xstat/xstat_cm.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_cm_h_
  11 #define _xstat_cm_h_  1
  12
  13 /*------------------------------------------------------------------------
  14  * xstat_cm.h
  15  *
  16  * Interface to the AFS Cache Manager extended statistics facility.  With
  17  * the routines defined here, the importer can gather extended statistics
  18  * from the given group of Cache Managers 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/afscbint.h>       /*AFS CM callback interface */
  42 #define FSINT_COMMON_XG         /* to allow the inclusion of
  43                                  * xstat_cm.h with this file in an application. */
  44 #include <afs/afs_stats.h>      /*AFS statistics interface */
  45
  46 /*
  47  * ---------------------- Exported definitions ------------------------
  48  */
  49 /*
  50  * Define the initialization flags used within the xstat_fs_Init() call.
  51  *      XSTAT_CM_INITFLAG_DEBUGGING     Turn debugging output on?
  52  *      XSTAT_CM_INITFLAG_ONE_SHOT      Do a one-shot collection?
  53  */
  54 #define XSTAT_CM_INITFLAG_DEBUGGING     0x1
  55 #define XSTAT_CM_INITFLAG_ONE_SHOT      0x2
  56
  57
  58 /*
  59  * ----------------------- Exported structures ------------------------
  60  */
  61 /*
  62  * Connection information per Cache Manager host being probed.
  63  */
  64 struct xstat_cm_ConnectionInfo {
  65     struct sockaddr_in skt;     /*Socket info */
  66     struct rx_connection *rxconn;       /*Rx connection */
  67     char hostName[256];         /*Computed hostname */
  68 };
  69
  70 /*
  71  * The results of a probe of one of the Cache Managers in the set being
  72  * watched.
  73  */
  74 struct xstat_cm_ProbeResults {
  75     int probeNum;               /*Probe number */
  76     afs_int32 probeTime;        /*Time probe initiated */
  77     struct xstat_cm_ConnectionInfo *connP;      /*Connection polled */
  78     afs_int32 collectionNumber; /*Collection received */
  79     AFSCB_CollData data;        /*Ptr to data collected */
  80     int probeOK;                /*Latest probe successful? */
  81 };
  82
  83 /*
  84  * ------------------- Externally-visible variables -------------------
  85  */
  86 extern int xstat_cm_numServers; /*# connected servers */
  87 extern struct xstat_cm_ConnectionInfo
  88  *xstat_cm_ConnInfo;            /*Ptr to connections */
  89 extern int numCollections;      /*Num data collections */
  90 extern struct xstat_cm_ProbeResults
  91   xstat_cm_Results;             /*Latest probe results */
  92 extern char terminationEvent;   /*One-shot termination event */
  93
  94 /*
  95  * ------------------------ Exported functions ------------------------
  96  */
  97 extern int xstat_cm_Init(int, struct sockaddr_in *, int,
  98                          int (*a_ProbeHandler)(void),
  99                          int, int, afs_int32 *);
 100     /*
 101      * Summary:
 102      *    Initialize the xstat_cm module: set up Rx connections to the
 103      *    given set of Cache Managers, start up the probe LWP, and
 104      *    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)()           : 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_cm_ForceProbeNow(void);
 122     /*
 123      * Summary:
 124      *    Force an immediate probe to the connected Cache Managers.
 125      *
 126      * Args:
 127      *    None.
 128      *
 129      * Returns:
 130      *    0 on success,
 131      *    Error value otherwise.
 132      */
 133
 134 extern int xstat_cm_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_cm connection array.
 146      */
 147
 148 #endif /* _xstat_cm_h_ */