ceph/src/test/test_striper.cc

   1 #include "gtest/gtest.h"
   2 #include "global/global_context.h"
   3
   4 #include "osdc/Striper.h"
   5
   6 using namespace std;
   7
   8 TEST(Striper, Stripe1)
   9 {
  10   file_layout_t l;
  11
  12   l.object_size = 262144;
  13   l.stripe_unit = 4096;
  14   l.stripe_count = 3;
  15
  16   vector<ObjectExtent> ex;
  17   Striper::file_to_extents(g_ceph_context, 1, &l, 5006035, 46419, 5006035, ex);
  18
  19   cout << "result " << ex << std::endl;
  20
  21   ASSERT_EQ(3u, ex.size());
  22   ASSERT_EQ(98304u, ex[0].truncate_size);
  23   ASSERT_EQ(ex[1].offset, ex[1].truncate_size);
  24   ASSERT_EQ(94208u, ex[2].truncate_size);
  25 }
  26
  27 TEST(Striper, EmptyPartialResult)
  28 {
  29   file_layout_t l;
  30
  31   l.object_size = 4194304;
  32   l.stripe_unit = 4194304;
  33   l.stripe_count = 1;
  34
  35   vector<ObjectExtent> ex;
  36   Striper::file_to_extents(g_ceph_context, 1, &l, 725549056, 131072, 72554905600, ex);
  37   cout << "ex " << ex << std::endl;
  38   ASSERT_EQ(2u, ex.size());
  39
  40   Striper::StripedReadResult r;
  41
  42   bufferlist bl;
  43   r.add_partial_result(g_ceph_context, bl, ex[1].buffer_extents);
  44
  45   bufferptr bp(65536);
  46   bp.zero();
  47   bl.append(bp);
  48
  49   r.add_partial_result(g_ceph_context, bl, ex[0].buffer_extents);
  50
  51   bufferlist outbl;
  52   r.assemble_result(g_ceph_context, outbl, false);
  53
  54   ASSERT_EQ(65536u, outbl.length());
  55 }
  56
  57 TEST(Striper, GetNumObj)
  58 {
  59   file_layout_t l;
  60
  61   l.object_size = 262144;
  62   l.stripe_unit = 4096;
  63   l.stripe_count = 3;
  64   uint64_t size,numobjs;
  65   size = 6999;
  66   numobjs = Striper::get_num_objects(l, size);
  67   ASSERT_EQ(2u, numobjs);
  68   size = 793320;
  69   numobjs = Striper::get_num_objects(l, size);
  70   ASSERT_EQ(5u, numobjs);
  71   size = 805608;
  72   numobjs = Striper::get_num_objects(l, size);
  73   ASSERT_EQ(6u, numobjs);
  74 }
  75
  76 TEST(Striper, GetFileOffset)
  77 {
  78   file_layout_t l;
  79
  80   l.object_size = 262144;
  81   l.stripe_unit = 4096;
  82   l.stripe_count = 3;
  83
  84   uint64_t object_no = 100;
  85   uint64_t object_off = 200000;
  86   uint64_t file_offset = Striper::get_file_offset(
  87           g_ceph_context, &l, object_no, object_off);
  88   ASSERT_EQ(26549568u, file_offset);
  89 }