ceph/src/test/rbd_mirror/test_InstanceWatcher.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab
   3
   4 #include "include/rados/librados.hpp"
   5 #include "include/stringify.h"
   6 #include "cls/rbd/cls_rbd_types.h"
   7 #include "cls/rbd/cls_rbd_client.h"
   8 #include "librbd/Utils.h"
   9 #include "librbd/internal.h"
  10 #include "test/rbd_mirror/test_fixture.h"
  11 #include "tools/rbd_mirror/InstanceWatcher.h"
  12 #include "tools/rbd_mirror/Threads.h"
  13 #include "common/Cond.h"
  14
  15 #include "test/librados/test_cxx.h"
  16 #include "gtest/gtest.h"
  17
  18 using rbd::mirror::InstanceWatcher;
  19
  20 void register_test_instance_watcher() {
  21 }
  22
  23 class TestInstanceWatcher : public ::rbd::mirror::TestFixture {
  24 public:
  25   std::string m_instance_id;
  26   std::string m_oid;
  27
  28   void SetUp() override {
  29     TestFixture::SetUp();
  30     m_local_io_ctx.remove(RBD_MIRROR_LEADER);
  31     EXPECT_EQ(0, m_local_io_ctx.create(RBD_MIRROR_LEADER, true));
  32
  33     m_instance_id = stringify(m_local_io_ctx.get_instance_id());
  34     m_oid = RBD_MIRROR_INSTANCE_PREFIX + m_instance_id;
  35   }
  36
  37   void get_instances(std::vector<std::string> *instance_ids) {
  38     instance_ids->clear();
  39     C_SaferCond on_get;
  40     InstanceWatcher<>::get_instances(m_local_io_ctx, instance_ids, &on_get);
  41     EXPECT_EQ(0, on_get.wait());
  42   }
  43 };
  44
  45 TEST_F(TestInstanceWatcher, InitShutdown)
  46 {
  47   InstanceWatcher<> instance_watcher(m_local_io_ctx, m_threads->work_queue,
  48                                      nullptr, nullptr, m_instance_id);
  49   std::vector<std::string> instance_ids;
  50   get_instances(&instance_ids);
  51   ASSERT_EQ(0U, instance_ids.size());
  52
  53   uint64_t size;
  54   ASSERT_EQ(-ENOENT, m_local_io_ctx.stat(m_oid, &size, nullptr));
  55
  56   // Init
  57   ASSERT_EQ(0, instance_watcher.init());
  58
  59   get_instances(&instance_ids);
  60   ASSERT_EQ(1U, instance_ids.size());
  61   ASSERT_EQ(m_instance_id, instance_ids[0]);
  62
  63   ASSERT_EQ(0, m_local_io_ctx.stat(m_oid, &size, nullptr));
  64   std::list<obj_watch_t> watchers;
  65   ASSERT_EQ(0, m_local_io_ctx.list_watchers(m_oid, &watchers));
  66   ASSERT_EQ(1U, watchers.size());
  67   ASSERT_EQ(m_instance_id, stringify(watchers.begin()->watcher_id));
  68
  69   get_instances(&instance_ids);
  70   ASSERT_EQ(1U, instance_ids.size());
  71
  72   // Shutdown
  73   instance_watcher.shut_down();
  74
  75   ASSERT_EQ(-ENOENT, m_local_io_ctx.stat(m_oid, &size, nullptr));
  76   get_instances(&instance_ids);
  77   ASSERT_EQ(0U, instance_ids.size());
  78 }
  79
  80 TEST_F(TestInstanceWatcher, Remove)
  81 {
  82   std::string instance_id = "instance_id";
  83   std::string oid = RBD_MIRROR_INSTANCE_PREFIX + instance_id;
  84
  85   std::vector<std::string> instance_ids;
  86   get_instances(&instance_ids);
  87   ASSERT_EQ(0U, instance_ids.size());
  88
  89   uint64_t size;
  90   ASSERT_EQ(-ENOENT, m_local_io_ctx.stat(oid, &size, nullptr));
  91
  92   librados::Rados cluster;
  93   librados::IoCtx io_ctx;
  94   ASSERT_EQ("", connect_cluster_pp(cluster));
  95   ASSERT_EQ(0, cluster.ioctx_create(_local_pool_name.c_str(), io_ctx));
  96   InstanceWatcher<> instance_watcher(m_local_io_ctx, m_threads->work_queue,
  97                                      nullptr, nullptr, "instance_id");
  98   // Init
  99   ASSERT_EQ(0, instance_watcher.init());
 100
 101   get_instances(&instance_ids);
 102   ASSERT_EQ(1U, instance_ids.size());
 103   ASSERT_EQ(instance_id, instance_ids[0]);
 104
 105   ASSERT_EQ(0, m_local_io_ctx.stat(oid, &size, nullptr));
 106   std::list<obj_watch_t> watchers;
 107   ASSERT_EQ(0, m_local_io_ctx.list_watchers(oid, &watchers));
 108   ASSERT_EQ(1U, watchers.size());
 109
 110   // Remove
 111   C_SaferCond on_remove;
 112   InstanceWatcher<>::remove_instance(m_local_io_ctx, m_threads->work_queue,
 113                                      "instance_id", &on_remove);
 114   ASSERT_EQ(0, on_remove.wait());
 115
 116   ASSERT_EQ(-ENOENT, m_local_io_ctx.stat(oid, &size, nullptr));
 117   get_instances(&instance_ids);
 118   ASSERT_EQ(0U, instance_ids.size());
 119
 120   // Shutdown
 121   instance_watcher.shut_down();
 122
 123   ASSERT_EQ(-ENOENT, m_local_io_ctx.stat(m_oid, &size, nullptr));
 124   get_instances(&instance_ids);
 125   ASSERT_EQ(0U, instance_ids.size());
 126
 127   // Remove NOENT
 128   C_SaferCond on_remove_noent;
 129   InstanceWatcher<>::remove_instance(m_local_io_ctx, m_threads->work_queue,
 130                                      instance_id, &on_remove_noent);
 131   ASSERT_EQ(0, on_remove_noent.wait());
 132 }