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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "tools/rbd_mirror/ServiceDaemon.h"
#include "include/Context.h"
#include "include/stringify.h"
#include "common/ceph_context.h"
#include "common/config.h"
#include "common/debug.h"
#include "common/errno.h"
#include "common/Formatter.h"
#include "common/Timer.h"
#include "tools/rbd_mirror/Threads.h"
#include <sstream>
#define dout_context g_ceph_context
#define dout_subsys ceph_subsys_rbd_mirror
#undef dout_prefix
#define dout_prefix *_dout << "rbd::mirror::ServiceDaemon: " << this << " " \
<< __func__ << ": "
namespace rbd {
namespace mirror {
namespace {
const std::string RBD_MIRROR_AUTH_ID_PREFIX("rbd-mirror.");
struct AttributeDumpVisitor : public boost::static_visitor<void> {
ceph::Formatter *f;
const std::string& name;
AttributeDumpVisitor(ceph::Formatter *f, const std::string& name)
: f(f), name(name) {
}
void operator()(bool val) const {
f->dump_bool(name.c_str(), val);
}
void operator()(uint64_t val) const {
f->dump_unsigned(name.c_str(), val);
}
void operator()(const std::string& val) const {
f->dump_string(name.c_str(), val);
}
};
} // anonymous namespace
using namespace service_daemon;
template <typename I>
ServiceDaemon<I>::ServiceDaemon(CephContext *cct, RadosRef rados,
Threads<I>* threads)
: m_cct(cct), m_rados(rados), m_threads(threads),
m_lock("rbd::mirror::ServiceDaemon") {
dout(20) << dendl;
}
template <typename I>
ServiceDaemon<I>::~ServiceDaemon() {
dout(20) << dendl;
Mutex::Locker timer_locker(m_threads->timer_lock);
if (m_timer_ctx != nullptr) {
m_threads->timer->cancel_event(m_timer_ctx);
update_status();
}
}
template <typename I>
int ServiceDaemon<I>::init() {
dout(20) << dendl;
std::string id = m_cct->_conf->name.get_id();
if (id.find(RBD_MIRROR_AUTH_ID_PREFIX) == 0) {
id = id.substr(RBD_MIRROR_AUTH_ID_PREFIX.size());
}
std::string instance_id = stringify(m_rados->get_instance_id());
std::map<std::string, std::string> service_metadata = {
{"id", id}, {"instance_id", instance_id}};
int r = m_rados->service_daemon_register("rbd-mirror", instance_id,
service_metadata);
if (r < 0) {
return r;
}
return 0;
}
template <typename I>
void ServiceDaemon<I>::add_pool(int64_t pool_id, const std::string& pool_name) {
dout(20) << "pool_id=" << pool_id << ", pool_name=" << pool_name << dendl;
{
Mutex::Locker locker(m_lock);
m_pools.insert({pool_id, {pool_name}});
}
schedule_update_status();
}
template <typename I>
void ServiceDaemon<I>::remove_pool(int64_t pool_id) {
dout(20) << "pool_id=" << pool_id << dendl;
{
Mutex::Locker locker(m_lock);
m_pools.erase(pool_id);
}
schedule_update_status();
}
template <typename I>
uint64_t ServiceDaemon<I>::add_or_update_callout(int64_t pool_id,
uint64_t callout_id,
CalloutLevel callout_level,
const std::string& text) {
dout(20) << "pool_id=" << pool_id << ", "
<< "callout_id=" << callout_id << ", "
<< "callout_level=" << callout_level << ", "
<< "text=" << text << dendl;
{
Mutex::Locker locker(m_lock);
auto pool_it = m_pools.find(pool_id);
if (pool_it == m_pools.end()) {
return CALLOUT_ID_NONE;
}
if (callout_id == CALLOUT_ID_NONE) {
callout_id = ++m_callout_id;
}
pool_it->second.callouts[callout_id] = {callout_level, text};
}
schedule_update_status();
return callout_id;
}
template <typename I>
void ServiceDaemon<I>::remove_callout(int64_t pool_id, uint64_t callout_id) {
dout(20) << "pool_id=" << pool_id << ", "
<< "callout_id=" << callout_id << dendl;
{
Mutex::Locker locker(m_lock);
auto pool_it = m_pools.find(pool_id);
if (pool_it == m_pools.end()) {
return;
}
pool_it->second.callouts.erase(callout_id);
}
schedule_update_status();
}
template <typename I>
void ServiceDaemon<I>::add_or_update_attribute(int64_t pool_id,
const std::string& key,
const AttributeValue& value) {
dout(20) << "pool_id=" << pool_id << ", "
<< "key=" << key << ", "
<< "value=" << value << dendl;
{
Mutex::Locker locker(m_lock);
auto pool_it = m_pools.find(pool_id);
if (pool_it == m_pools.end()) {
return;
}
pool_it->second.attributes[key] = value;
}
schedule_update_status();
}
template <typename I>
void ServiceDaemon<I>::remove_attribute(int64_t pool_id,
const std::string& key) {
dout(20) << "pool_id=" << pool_id << ", "
<< "key=" << key << dendl;
{
Mutex::Locker locker(m_lock);
auto pool_it = m_pools.find(pool_id);
if (pool_it == m_pools.end()) {
return;
}
pool_it->second.attributes.erase(key);
}
schedule_update_status();
}
template <typename I>
void ServiceDaemon<I>::schedule_update_status() {
Mutex::Locker timer_locker(m_threads->timer_lock);
if (m_timer_ctx != nullptr) {
return;
}
m_timer_ctx = new FunctionContext([this](int) {
m_timer_ctx = nullptr;
update_status();
});
m_threads->timer->add_event_after(1, m_timer_ctx);
}
template <typename I>
void ServiceDaemon<I>::update_status() {
dout(20) << dendl;
ceph_assert(m_threads->timer_lock.is_locked());
ceph::JSONFormatter f;
{
Mutex::Locker locker(m_lock);
f.open_object_section("pools");
for (auto& pool_pair : m_pools) {
f.open_object_section(stringify(pool_pair.first).c_str());
f.dump_string("name", pool_pair.second.name);
f.open_object_section("callouts");
for (auto& callout : pool_pair.second.callouts) {
f.open_object_section(stringify(callout.first).c_str());
f.dump_string("level", stringify(callout.second.level).c_str());
f.dump_string("text", callout.second.text.c_str());
f.close_section();
}
f.close_section(); // callouts
for (auto& attribute : pool_pair.second.attributes) {
AttributeDumpVisitor attribute_dump_visitor(&f, attribute.first);
boost::apply_visitor(attribute_dump_visitor, attribute.second);
}
f.close_section(); // pool
}
f.close_section(); // pools
}
std::stringstream ss;
f.flush(ss);
int r = m_rados->service_daemon_update_status({{"json", ss.str()}});
if (r < 0) {
derr << "failed to update service daemon status: " << cpp_strerror(r)
<< dendl;
}
}
} // namespace mirror
} // namespace rbd
template class rbd::mirror::ServiceDaemon<librbd::ImageCtx>;
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