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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp
#ifndef CEPH_RGW_GC_H
#define CEPH_RGW_GC_H
#include "include/types.h"
#include "include/rados/librados.hpp"
#include "common/ceph_mutex.h"
#include "common/Cond.h"
#include "common/Thread.h"
#include "rgw_common.h"
#include "rgw_sal.h"
#include "rgw_rados.h"
#include "cls/rgw/cls_rgw_types.h"
#include <atomic>
class RGWGCIOManager;
class RGWGC : public DoutPrefixProvider {
CephContext *cct;
RGWRados *store;
int max_objs;
string *obj_names;
std::atomic<bool> down_flag = { false };
static constexpr uint64_t seed = 8675309;
int tag_index(const string& tag);
int send_chain(const cls_rgw_obj_chain& chain, const std::string& tag);
class GCWorker : public Thread {
const DoutPrefixProvider *dpp;
CephContext *cct;
RGWGC *gc;
ceph::mutex lock = ceph::make_mutex("GCWorker");
ceph::condition_variable cond;
public:
GCWorker(const DoutPrefixProvider *_dpp, CephContext *_cct, RGWGC *_gc) : dpp(_dpp), cct(_cct), gc(_gc) {}
void *entry() override;
void stop();
};
GCWorker *worker;
public:
RGWGC() : cct(NULL), store(NULL), max_objs(0), obj_names(NULL), worker(NULL) {}
~RGWGC() {
stop_processor();
finalize();
}
vector<bool> transitioned_objects_cache;
std::tuple<int, std::optional<cls_rgw_obj_chain>> send_split_chain(const cls_rgw_obj_chain& chain, const std::string& tag);
// asynchronously defer garbage collection on an object that's still being read
int async_defer_chain(const string& tag, const cls_rgw_obj_chain& info);
// callback for when async_defer_chain() fails with ECANCELED
void on_defer_canceled(const cls_rgw_gc_obj_info& info);
int remove(int index, const std::vector<string>& tags, librados::AioCompletion **pc);
int remove(int index, int num_entries);
void initialize(CephContext *_cct, RGWRados *_store);
void finalize();
int list(int *index, string& marker, uint32_t max, bool expired_only, std::list<cls_rgw_gc_obj_info>& result, bool *truncated, bool& processing_queue);
void list_init(int *index) { *index = 0; }
int process(int index, int process_max_secs, bool expired_only,
RGWGCIOManager& io_manager);
int process(bool expired_only);
bool going_down();
void start_processor();
void stop_processor();
CephContext *get_cct() const override { return store->ctx(); }
unsigned get_subsys() const;
std::ostream& gen_prefix(std::ostream& out) const;
};
#endif
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