example/hparser.c

   1 /*
   2  * 2008+ Copyright (c) Evgeniy Polyakov <zbr@ioremap.net>
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <sys/types.h>
  17 #include <sys/stat.h>
  18 #include <sys/socket.h>
  19 #include <sys/time.h>
  20 #include <sys/mman.h>
  21
  22 #include <ctype.h>
  23 #include <fcntl.h>
  24 #include <errno.h>
  25 #include <unistd.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29 #include <time.h>
  30
  31 #include "elliptics/packet.h"
  32 #include "elliptics/interface.h"
  33
  34 #include "common.h"
  35
  36 static int hparser_region_match(struct dnet_history_entry *e,
  37                 unsigned long long offset, unsigned long long size)
  38 {
  39         if ((e->offset > offset) && (e->offset < offset + size))
  40                 return 1;
  41
  42         if ((e->offset < offset) && (e->offset + e->size > offset))
  43                 return 1;
  44
  45         return 0;
  46 }
  47
  48 static void hparser_usage(const char *p)
  49 {
  50         fprintf(stderr, "Usage: %s args\n", p);
  51         fprintf(stderr, " -f file              - history file to parse\n"
  52                         " -d                   - history database to parse\n"
  53                         " -o offset            - offset of the region to highlight\n"
  54                         " -s size              - size of the region to highlight\n"
  55                         " -h                   - this help\n");
  56         exit(-1);
  57 }
  58
  59 static void hparser_dump_history(struct dnet_history_map *m, unsigned long long offset,
  60                                 unsigned long long size)
  61 {
  62         long i;
  63         struct tm tm;
  64         char str[64];
  65         char id_str[DNET_ID_SIZE*2 + 1];
  66
  67         for (i=m->num-1; i>=0; --i) {
  68                 struct dnet_history_entry e = m->ent[i];
  69                 time_t t;
  70
  71                 dnet_convert_history_entry(&e);
  72
  73                 t = e.tsec;
  74                 localtime_r(&t, &tm);
  75                 strftime(str, sizeof(str), "%F %R:%S", &tm);
  76
  77                 printf("%s.%09llu: %s: flags: %08x [removed: %s], offset: %8llu, size: %8llu: %c\n",
  78                         str, (unsigned long long)e.tnsec,
  79                         dnet_dump_id_len_raw(e.id, DNET_ID_SIZE, id_str), e.flags,
  80                         (e.flags & DNET_IO_FLAGS_REMOVED) ? "yes" : "no",
  81                         (unsigned long long)e.offset, (unsigned long long)e.size,
  82                         hparser_region_match(&e, offset, size) ? '+' : '-');
  83         }
  84         return;
  85 }
  86
  87 int main(int argc, char *argv[])
  88 {
  89         struct dnet_history_map m;
  90         int err, ch;
  91         char *file = NULL, *database = NULL;
  92         unsigned long long offset, size;
  93
  94         size = offset = 0;
  95
  96         while ((ch = getopt(argc, argv, "s:o:f:d:h")) != -1) {
  97                 switch (ch) {
  98                         case 's':
  99                                 size = strtoull(optarg, NULL, 0);
 100                                 break;
 101                         case 'o':
 102                                 offset = strtoull(optarg, NULL, 0);
 103                                 break;
 104                         case 'f':
 105                                 file = optarg;
 106                                 break;
 107                         case 'd':
 108                                 database = optarg;
 109                                 break;
 110                         case 'h':
 111                                 hparser_usage(argv[0]);
 112                 }
 113         }
 114
 115         if (!file && !database) {
 116                 fprintf(stderr, "You have to provide history file or database to parse.\n");
 117                 hparser_usage(argv[0]);
 118         }
 119
 120         if (file) {
 121                 err = dnet_map_history(NULL, file, &m);
 122                 if (err) {
 123                         fprintf(stderr, "Failed to map history file '%s': %d.\n", file, err);
 124                         goto err_out_exit;
 125                 }
 126
 127                 printf("%s: objects: %ld, range: %llu-%llu, counting from the most recent (nanoseconds resolution).\n",
 128                         file, m.num, offset, offset+size);
 129
 130                 hparser_dump_history(&m, offset, size);
 131
 132                 dnet_unmap_history(NULL, &m);
 133         }
 134
 135         if (database) {
 136                 printf("not yet supported\n");
 137         }
 138
 139 err_out_exit:
 140         return err;
 141 }