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