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#ifndef CEPH_RGW_SERVICES_SYS_OBJ_CACHE_H
#define CEPH_RGW_SERVICES_SYS_OBJ_CACHE_H
#include "rgw/rgw_service.h"
#include "rgw/rgw_cache.h"
#include "svc_sys_obj_core.h"
class RGWSI_Notify;
class RGWSI_SysObj_Cache_CB;
class RGWSI_SysObj_Cache : public RGWSI_SysObj_Core
{
friend class RGWSI_SysObj_Cache_CB;
friend class RGWServices_Def;
RGWSI_Notify *notify_svc{nullptr};
ObjectCache cache;
std::shared_ptr<RGWSI_SysObj_Cache_CB> cb;
void normalize_pool_and_obj(const rgw_pool& src_pool, const string& src_obj, rgw_pool& dst_pool, string& dst_obj);
protected:
void init(RGWSI_RADOS *_rados_svc,
RGWSI_Zone *_zone_svc,
RGWSI_Notify *_notify_svc) {
core_init(_rados_svc, _zone_svc);
notify_svc = _notify_svc;
}
int do_start() override;
int raw_stat(const rgw_raw_obj& obj, uint64_t *psize, real_time *pmtime, uint64_t *epoch,
map<string, bufferlist> *attrs, bufferlist *first_chunk,
RGWObjVersionTracker *objv_tracker) override;
int read(RGWSysObjectCtxBase& obj_ctx,
GetObjState& read_state,
RGWObjVersionTracker *objv_tracker,
const rgw_raw_obj& obj,
bufferlist *bl, off_t ofs, off_t end,
map<string, bufferlist> *attrs,
bool raw_attrs,
rgw_cache_entry_info *cache_info,
boost::optional<obj_version>) override;
int get_attr(const rgw_raw_obj& obj, const char *name, bufferlist *dest) override;
int set_attrs(const rgw_raw_obj& obj,
map<string, bufferlist>& attrs,
map<string, bufferlist> *rmattrs,
RGWObjVersionTracker *objv_tracker);
int remove(RGWSysObjectCtxBase& obj_ctx,
RGWObjVersionTracker *objv_tracker,
const rgw_raw_obj& obj) override;
int write(const rgw_raw_obj& obj,
real_time *pmtime,
map<std::string, bufferlist>& attrs,
bool exclusive,
const bufferlist& data,
RGWObjVersionTracker *objv_tracker,
real_time set_mtime) override;
int write_data(const rgw_raw_obj& obj,
const bufferlist& bl,
bool exclusive,
RGWObjVersionTracker *objv_tracker);
int distribute_cache(const string& normal_name, const rgw_raw_obj& obj, ObjectCacheInfo& obj_info, int op);
int watch_cb(uint64_t notify_id,
uint64_t cookie,
uint64_t notifier_id,
bufferlist& bl);
void set_enabled(bool status);
public:
RGWSI_SysObj_Cache(CephContext *cct) : RGWSI_SysObj_Core(cct) {
cache.set_ctx(cct);
}
bool chain_cache_entry(std::initializer_list<rgw_cache_entry_info *> cache_info_entries,
RGWChainedCache::Entry *chained_entry);
void register_chained_cache(RGWChainedCache *cc);
void unregister_chained_cache(RGWChainedCache *cc);
void call_list(const std::optional<std::string>& filter, Formatter* f);
int call_inspect(const std::string& target, Formatter* f);
int call_erase(const std::string& target);
int call_zap();
};
template <class T>
class RGWChainedCacheImpl : public RGWChainedCache {
RGWSI_SysObj_Cache *svc{nullptr};
ceph::timespan expiry;
RWLock lock;
std::unordered_map<std::string, std::pair<T, ceph::coarse_mono_time>> entries;
public:
RGWChainedCacheImpl() : lock("RGWChainedCacheImpl::lock") {}
~RGWChainedCacheImpl() {
if (!svc) {
return;
}
svc->unregister_chained_cache(this);
}
void unregistered() override {
svc = nullptr;
}
void init(RGWSI_SysObj_Cache *_svc) {
if (!_svc) {
return;
}
svc = _svc;
svc->register_chained_cache(this);
expiry = std::chrono::seconds(svc->ctx()->_conf.get_val<uint64_t>(
"rgw_cache_expiry_interval"));
}
boost::optional<T> find(const string& key) {
RWLock::RLocker rl(lock);
auto iter = entries.find(key);
if (iter == entries.end()) {
return boost::none;
}
if (expiry.count() &&
(ceph::coarse_mono_clock::now() - iter->second.second) > expiry) {
return boost::none;
}
return iter->second.first;
}
bool put(RGWSI_SysObj_Cache *svc, const string& key, T *entry,
std::initializer_list<rgw_cache_entry_info *> cache_info_entries) {
if (!svc) {
return false;
}
Entry chain_entry(this, key, entry);
/* we need the svc cache to call us under its lock to maintain lock ordering */
return svc->chain_cache_entry(cache_info_entries, &chain_entry);
}
void chain_cb(const string& key, void *data) override {
T *entry = static_cast<T *>(data);
RWLock::WLocker wl(lock);
entries[key].first = *entry;
if (expiry.count() > 0) {
entries[key].second = ceph::coarse_mono_clock::now();
}
}
void invalidate(const string& key) override {
RWLock::WLocker wl(lock);
entries.erase(key);
}
void invalidate_all() override {
RWLock::WLocker wl(lock);
entries.clear();
}
}; /* RGWChainedCacheImpl */
#endif
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