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