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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "include/rados/librados.hpp"
#include "cls/rbd/cls_rbd_client.h"
#include "test/rbd_mirror/test_fixture.h"
#include "tools/rbd_mirror/InstanceWatcher.h"
#include "tools/rbd_mirror/Instances.h"
#include "tools/rbd_mirror/Threads.h"
#include "common/Cond.h"
#include "test/librados/test.h"
#include "gtest/gtest.h"
#include <vector>
using rbd::mirror::InstanceWatcher;
using rbd::mirror::Instances;
void register_test_instances() {
}
class TestInstances : public ::rbd::mirror::TestFixture {
public:
struct Listener : public rbd::mirror::instances::Listener {
std::mutex lock;
struct Instance {
uint32_t count = 0;
std::set<std::string> ids;
C_SaferCond ctx;
};
Instance add;
Instance remove;
void handle(const InstanceIds& instance_ids, Instance* instance) {
std::unique_lock<std::mutex> locker(lock);
for (auto& instance_id : instance_ids) {
ceph_assert(instance->count > 0);
--instance->count;
instance->ids.insert(instance_id);
if (instance->count == 0) {
instance->ctx.complete(0);
}
}
}
void handle_added(const InstanceIds& instance_ids) override {
handle(instance_ids, &add);
}
void handle_removed(const InstanceIds& instance_ids) override {
handle(instance_ids, &remove);
}
};
virtual void SetUp() {
TestFixture::SetUp();
m_local_io_ctx.remove(RBD_MIRROR_LEADER);
EXPECT_EQ(0, m_local_io_ctx.create(RBD_MIRROR_LEADER, true));
m_instance_id = stringify(m_local_io_ctx.get_instance_id());
}
Listener m_listener;
std::string m_instance_id;
};
TEST_F(TestInstances, InitShutdown)
{
m_listener.add.count = 1;
Instances<> instances(m_threads, m_local_io_ctx, m_instance_id, m_listener);
std::string instance_id = "instance_id";
ASSERT_EQ(0, librbd::cls_client::mirror_instances_add(&m_local_io_ctx,
instance_id));
C_SaferCond on_init;
instances.init(&on_init);
ASSERT_EQ(0, on_init.wait());
ASSERT_LT(0U, m_listener.add.count);
instances.unblock_listener();
ASSERT_EQ(0, m_listener.add.ctx.wait());
ASSERT_EQ(std::set<std::string>({instance_id}), m_listener.add.ids);
C_SaferCond on_shut_down;
instances.shut_down(&on_shut_down);
ASSERT_EQ(0, on_shut_down.wait());
}
TEST_F(TestInstances, InitEnoent)
{
Instances<> instances(m_threads, m_local_io_ctx, m_instance_id, m_listener);
m_local_io_ctx.remove(RBD_MIRROR_LEADER);
C_SaferCond on_init;
instances.init(&on_init);
ASSERT_EQ(0, on_init.wait());
C_SaferCond on_shut_down;
instances.shut_down(&on_shut_down);
ASSERT_EQ(0, on_shut_down.wait());
}
TEST_F(TestInstances, NotifyRemove)
{
// speed testing up a little
EXPECT_EQ(0, _rados->conf_set("rbd_mirror_leader_heartbeat_interval", "1"));
EXPECT_EQ(0, _rados->conf_set("rbd_mirror_leader_max_missed_heartbeats",
"2"));
EXPECT_EQ(0, _rados->conf_set("rbd_mirror_leader_max_acquire_attempts_before_break",
"0"));
m_listener.add.count = 2;
m_listener.remove.count = 1;
Instances<> instances(m_threads, m_local_io_ctx, m_instance_id, m_listener);
std::string instance_id1 = "instance_id1";
std::string instance_id2 = "instance_id2";
ASSERT_EQ(0, librbd::cls_client::mirror_instances_add(&m_local_io_ctx,
instance_id1));
C_SaferCond on_init;
instances.init(&on_init);
ASSERT_EQ(0, on_init.wait());
instances.acked({instance_id2});
ASSERT_LT(0U, m_listener.add.count);
instances.unblock_listener();
ASSERT_EQ(0, m_listener.add.ctx.wait());
ASSERT_EQ(std::set<std::string>({instance_id1, instance_id2}),
m_listener.add.ids);
std::vector<std::string> instance_ids;
for (int i = 0; i < 100; i++) {
instances.acked({instance_id1});
if (m_listener.remove.count > 0) {
usleep(250000);
}
}
instances.acked({instance_id1});
ASSERT_EQ(0, m_listener.remove.ctx.wait());
ASSERT_EQ(std::set<std::string>({instance_id2}),
m_listener.remove.ids);
C_SaferCond on_get;
instances.acked({instance_id1});
InstanceWatcher<>::get_instances(m_local_io_ctx, &instance_ids, &on_get);
EXPECT_EQ(0, on_get.wait());
EXPECT_EQ(1U, instance_ids.size());
ASSERT_EQ(instance_ids[0], instance_id1);
C_SaferCond on_shut_down;
instances.shut_down(&on_shut_down);
ASSERT_EQ(0, on_shut_down.wait());
}
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