diff options
Diffstat (limited to 'src/rgw/rgw_metadata.cc')
| -rw-r--r-- | src/rgw/rgw_metadata.cc | 683 |
1 files changed, 683 insertions, 0 deletions
diff --git a/src/rgw/rgw_metadata.cc b/src/rgw/rgw_metadata.cc new file mode 100644 index 000000000..7fd25ae75 --- /dev/null +++ b/src/rgw/rgw_metadata.cc @@ -0,0 +1,683 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab ft=cpp + +#include "rgw_metadata.h" + +#include "rgw_mdlog.h" + + +#include "services/svc_meta.h" +#include "services/svc_meta_be_sobj.h" + +#define dout_subsys ceph_subsys_rgw + +using namespace std; + +void LogStatusDump::dump(Formatter *f) const { + string s; + switch (status) { + case MDLOG_STATUS_WRITE: + s = "write"; + break; + case MDLOG_STATUS_SETATTRS: + s = "set_attrs"; + break; + case MDLOG_STATUS_REMOVE: + s = "remove"; + break; + case MDLOG_STATUS_COMPLETE: + s = "complete"; + break; + case MDLOG_STATUS_ABORT: + s = "abort"; + break; + default: + s = "unknown"; + break; + } + encode_json("status", s, f); +} + +void encode_json(const char *name, const obj_version& v, Formatter *f) +{ + f->open_object_section(name); + f->dump_string("tag", v.tag); + f->dump_unsigned("ver", v.ver); + f->close_section(); +} + +void decode_json_obj(obj_version& v, JSONObj *obj) +{ + JSONDecoder::decode_json("tag", v.tag, obj); + JSONDecoder::decode_json("ver", v.ver, obj); +} + +void RGWMetadataLogData::encode(bufferlist& bl) const { + ENCODE_START(1, 1, bl); + encode(read_version, bl); + encode(write_version, bl); + uint32_t s = (uint32_t)status; + encode(s, bl); + ENCODE_FINISH(bl); +} + +void RGWMetadataLogData::decode(bufferlist::const_iterator& bl) { + DECODE_START(1, bl); + decode(read_version, bl); + decode(write_version, bl); + uint32_t s; + decode(s, bl); + status = (RGWMDLogStatus)s; + DECODE_FINISH(bl); +} + +void RGWMetadataLogData::dump(Formatter *f) const { + encode_json("read_version", read_version, f); + encode_json("write_version", write_version, f); + encode_json("status", LogStatusDump(status), f); +} + +void decode_json_obj(RGWMDLogStatus& status, JSONObj *obj) { + string s; + JSONDecoder::decode_json("status", s, obj); + if (s == "complete") { + status = MDLOG_STATUS_COMPLETE; + } else if (s == "write") { + status = MDLOG_STATUS_WRITE; + } else if (s == "remove") { + status = MDLOG_STATUS_REMOVE; + } else if (s == "set_attrs") { + status = MDLOG_STATUS_SETATTRS; + } else if (s == "abort") { + status = MDLOG_STATUS_ABORT; + } else { + status = MDLOG_STATUS_UNKNOWN; + } +} + +void RGWMetadataLogData::decode_json(JSONObj *obj) { + JSONDecoder::decode_json("read_version", read_version, obj); + JSONDecoder::decode_json("write_version", write_version, obj); + JSONDecoder::decode_json("status", status, obj); +} + +RGWMetadataHandler_GenericMetaBE::Put::Put(RGWMetadataHandler_GenericMetaBE *_handler, + RGWSI_MetaBackend_Handler::Op *_op, + string& _entry, RGWMetadataObject *_obj, + RGWObjVersionTracker& _objv_tracker, + optional_yield _y, + RGWMDLogSyncType _type, bool _from_remote_zone): + handler(_handler), op(_op), + entry(_entry), obj(_obj), + objv_tracker(_objv_tracker), + apply_type(_type), + y(_y), + from_remote_zone(_from_remote_zone) +{ +} + +int RGWMetadataHandler_GenericMetaBE::do_put_operate(Put *put_op, const DoutPrefixProvider *dpp) +{ + int r = put_op->put_pre(dpp); + if (r != 0) { /* r can also be STATUS_NO_APPLY */ + return r; + } + + r = put_op->put(dpp); + if (r != 0) { + return r; + } + + r = put_op->put_post(dpp); + if (r != 0) { /* e.g., -error or STATUS_APPLIED */ + return r; + } + + return 0; +} + +int RGWMetadataHandler_GenericMetaBE::get(string& entry, RGWMetadataObject **obj, optional_yield y, const DoutPrefixProvider *dpp) +{ + return be_handler->call([&](RGWSI_MetaBackend_Handler::Op *op) { + return do_get(op, entry, obj, y, dpp); + }); +} + +int RGWMetadataHandler_GenericMetaBE::put(string& entry, RGWMetadataObject *obj, RGWObjVersionTracker& objv_tracker, + optional_yield y, const DoutPrefixProvider *dpp, RGWMDLogSyncType type, bool from_remote_zone) +{ + return be_handler->call([&](RGWSI_MetaBackend_Handler::Op *op) { + return do_put(op, entry, obj, objv_tracker, y, dpp, type, from_remote_zone); + }); +} + +int RGWMetadataHandler_GenericMetaBE::remove(string& entry, RGWObjVersionTracker& objv_tracker, optional_yield y, const DoutPrefixProvider *dpp) +{ + return be_handler->call([&](RGWSI_MetaBackend_Handler::Op *op) { + return do_remove(op, entry, objv_tracker, y, dpp); + }); +} + +int RGWMetadataHandler_GenericMetaBE::mutate(const string& entry, + const ceph::real_time& mtime, + RGWObjVersionTracker *objv_tracker, + optional_yield y, + const DoutPrefixProvider *dpp, + RGWMDLogStatus op_type, + std::function<int()> f) +{ + return be_handler->call([&](RGWSI_MetaBackend_Handler::Op *op) { + RGWSI_MetaBackend::MutateParams params(mtime, op_type); + return op->mutate(entry, + params, + objv_tracker, + y, + f, + dpp); + }); +} + +int RGWMetadataHandler_GenericMetaBE::get_shard_id(const string& entry, int *shard_id) +{ + return be_handler->call([&](RGWSI_MetaBackend_Handler::Op *op) { + return op->get_shard_id(entry, shard_id); + }); +} + +int RGWMetadataHandler_GenericMetaBE::list_keys_init(const DoutPrefixProvider *dpp, const string& marker, void **phandle) +{ + auto op = std::make_unique<RGWSI_MetaBackend_Handler::Op_ManagedCtx>(be_handler); + + int ret = op->list_init(dpp, marker); + if (ret < 0) { + return ret; + } + + *phandle = (void *)op.release(); + + return 0; +} + +int RGWMetadataHandler_GenericMetaBE::list_keys_next(const DoutPrefixProvider *dpp, void *handle, int max, list<string>& keys, bool *truncated) +{ + auto op = static_cast<RGWSI_MetaBackend_Handler::Op_ManagedCtx *>(handle); + + int ret = op->list_next(dpp, max, &keys, truncated); + if (ret < 0 && ret != -ENOENT) { + return ret; + } + if (ret == -ENOENT) { + if (truncated) { + *truncated = false; + } + return 0; + } + + return 0; +} + +void RGWMetadataHandler_GenericMetaBE::list_keys_complete(void *handle) +{ + auto op = static_cast<RGWSI_MetaBackend_Handler::Op_ManagedCtx *>(handle); + delete op; +} + +string RGWMetadataHandler_GenericMetaBE::get_marker(void *handle) +{ + auto op = static_cast<RGWSI_MetaBackend_Handler::Op_ManagedCtx *>(handle); + string marker; + int r = op->list_get_marker(&marker); + if (r < 0) { + ldout(cct, 0) << "ERROR: " << __func__ << "(): list_get_marker() returned: r=" << r << dendl; + /* not much else to do */ + } + + return marker; +} + +RGWMetadataHandlerPut_SObj::RGWMetadataHandlerPut_SObj(RGWMetadataHandler_GenericMetaBE *handler, + RGWSI_MetaBackend_Handler::Op *op, + string& entry, RGWMetadataObject *obj, RGWObjVersionTracker& objv_tracker, + optional_yield y, + RGWMDLogSyncType type, bool from_remote_zone) : Put(handler, op, entry, obj, objv_tracker, y, type, from_remote_zone) { +} + +int RGWMetadataHandlerPut_SObj::put_pre(const DoutPrefixProvider *dpp) +{ + int ret = get(&old_obj, dpp); + if (ret < 0 && ret != -ENOENT) { + return ret; + } + exists = (ret != -ENOENT); + + oo.reset(old_obj); + + auto old_ver = (!old_obj ? obj_version() : old_obj->get_version()); + auto old_mtime = (!old_obj ? ceph::real_time() : old_obj->get_mtime()); + + // are we actually going to perform this put, or is it too old? + if (!handler->check_versions(exists, old_ver, old_mtime, + objv_tracker.write_version, obj->get_mtime(), + apply_type)) { + return STATUS_NO_APPLY; + } + + objv_tracker.read_version = old_ver; /* maintain the obj version we just read */ + + return 0; +} + +int RGWMetadataHandlerPut_SObj::put(const DoutPrefixProvider *dpp) +{ + int ret = put_check(dpp); + if (ret != 0) { + return ret; + } + + return put_checked(dpp); +} + +int RGWMetadataHandlerPut_SObj::put_checked(const DoutPrefixProvider *dpp) +{ + RGWSI_MBSObj_PutParams params(obj->get_pattrs(), obj->get_mtime()); + + encode_obj(¶ms.bl); + + int ret = op->put(entry, params, &objv_tracker, y, dpp); + if (ret < 0) { + return ret; + } + + return 0; +} + +class RGWMetadataTopHandler : public RGWMetadataHandler { + struct iter_data { + set<string> sections; + set<string>::iterator iter; + }; + + struct Svc { + RGWSI_Meta *meta{nullptr}; + } svc; + + RGWMetadataManager *mgr; + +public: + RGWMetadataTopHandler(RGWSI_Meta *meta_svc, + RGWMetadataManager *_mgr) : mgr(_mgr) { + base_init(meta_svc->ctx()); + svc.meta = meta_svc; + } + + string get_type() override { return string(); } + + RGWMetadataObject *get_meta_obj(JSONObj *jo, const obj_version& objv, const ceph::real_time& mtime) { + return new RGWMetadataObject; + } + + int get(string& entry, RGWMetadataObject **obj, optional_yield y, const DoutPrefixProvider *dpp) override { + return -ENOTSUP; + } + + int put(string& entry, RGWMetadataObject *obj, RGWObjVersionTracker& objv_tracker, + optional_yield y, const DoutPrefixProvider *dpp, RGWMDLogSyncType type, bool from_remote_zone) override { + return -ENOTSUP; + } + + int remove(string& entry, RGWObjVersionTracker& objv_tracker, optional_yield y, const DoutPrefixProvider *dpp) override { + return -ENOTSUP; + } + + int mutate(const string& entry, + const ceph::real_time& mtime, + RGWObjVersionTracker *objv_tracker, + optional_yield y, + const DoutPrefixProvider *dpp, + RGWMDLogStatus op_type, + std::function<int()> f) { + return -ENOTSUP; + } + + int list_keys_init(const DoutPrefixProvider *dpp, const string& marker, void **phandle) override { + iter_data *data = new iter_data; + list<string> sections; + mgr->get_sections(sections); + for (auto& s : sections) { + data->sections.insert(s); + } + data->iter = data->sections.lower_bound(marker); + + *phandle = data; + + return 0; + } + int list_keys_next(const DoutPrefixProvider *dpp, void *handle, int max, list<string>& keys, bool *truncated) override { + iter_data *data = static_cast<iter_data *>(handle); + for (int i = 0; i < max && data->iter != data->sections.end(); ++i, ++(data->iter)) { + keys.push_back(*data->iter); + } + + *truncated = (data->iter != data->sections.end()); + + return 0; + } + void list_keys_complete(void *handle) override { + iter_data *data = static_cast<iter_data *>(handle); + + delete data; + } + + virtual string get_marker(void *handle) override { + iter_data *data = static_cast<iter_data *>(handle); + + if (data->iter != data->sections.end()) { + return *(data->iter); + } + + return string(); + } +}; + +RGWMetadataHandlerPut_SObj::~RGWMetadataHandlerPut_SObj() {} + +int RGWMetadataHandler::attach(RGWMetadataManager *manager) +{ + return manager->register_handler(this); +} + +RGWMetadataHandler::~RGWMetadataHandler() {} + +obj_version& RGWMetadataObject::get_version() +{ + return objv; +} + +RGWMetadataManager::RGWMetadataManager(RGWSI_Meta *_meta_svc) + : cct(_meta_svc->ctx()), meta_svc(_meta_svc) +{ + md_top_handler.reset(new RGWMetadataTopHandler(meta_svc, this)); +} + +RGWMetadataManager::~RGWMetadataManager() +{ +} + +int RGWMetadataManager::register_handler(RGWMetadataHandler *handler) +{ + string type = handler->get_type(); + + if (handlers.find(type) != handlers.end()) + return -EEXIST; + + handlers[type] = handler; + + return 0; +} + +RGWMetadataHandler *RGWMetadataManager::get_handler(const string& type) +{ + map<string, RGWMetadataHandler *>::iterator iter = handlers.find(type); + if (iter == handlers.end()) + return NULL; + + return iter->second; +} + +void RGWMetadataManager::parse_metadata_key(const string& metadata_key, string& type, string& entry) +{ + auto pos = metadata_key.find(':'); + if (pos == string::npos) { + type = metadata_key; + } else { + type = metadata_key.substr(0, pos); + entry = metadata_key.substr(pos + 1); + } +} + +int RGWMetadataManager::find_handler(const string& metadata_key, RGWMetadataHandler **handler, string& entry) +{ + string type; + + parse_metadata_key(metadata_key, type, entry); + + if (type.empty()) { + *handler = md_top_handler.get(); + return 0; + } + + map<string, RGWMetadataHandler *>::iterator iter = handlers.find(type); + if (iter == handlers.end()) + return -ENOENT; + + *handler = iter->second; + + return 0; + +} + +int RGWMetadataManager::get(string& metadata_key, Formatter *f, optional_yield y, const DoutPrefixProvider *dpp) +{ + RGWMetadataHandler *handler; + string entry; + int ret = find_handler(metadata_key, &handler, entry); + if (ret < 0) { + return ret; + } + + RGWMetadataObject *obj; + + ret = handler->get(entry, &obj, y, dpp); + if (ret < 0) { + return ret; + } + + f->open_object_section("metadata_info"); + encode_json("key", metadata_key, f); + encode_json("ver", obj->get_version(), f); + real_time mtime = obj->get_mtime(); + if (!real_clock::is_zero(mtime)) { + utime_t ut(mtime); + encode_json("mtime", ut, f); + } + encode_json("data", *obj, f); + f->close_section(); + + delete obj; + + return 0; +} + +int RGWMetadataManager::put(string& metadata_key, bufferlist& bl, + optional_yield y, + const DoutPrefixProvider *dpp, + RGWMDLogSyncType sync_type, + bool from_remote_zone, + obj_version *existing_version) +{ + RGWMetadataHandler *handler; + string entry; + + int ret = find_handler(metadata_key, &handler, entry); + if (ret < 0) { + return ret; + } + + JSONParser parser; + if (!parser.parse(bl.c_str(), bl.length())) { + return -EINVAL; + } + + RGWObjVersionTracker objv_tracker; + + obj_version *objv = &objv_tracker.write_version; + + utime_t mtime; + + try { + JSONDecoder::decode_json("key", metadata_key, &parser); + JSONDecoder::decode_json("ver", *objv, &parser); + JSONDecoder::decode_json("mtime", mtime, &parser); + } catch (JSONDecoder::err& e) { + return -EINVAL; + } + + JSONObj *jo = parser.find_obj("data"); + if (!jo) { + return -EINVAL; + } + RGWMetadataObject *obj = handler->get_meta_obj(jo, *objv, mtime.to_real_time()); + if (!obj) { + return -EINVAL; + } + + ret = handler->put(entry, obj, objv_tracker, y, dpp, sync_type, from_remote_zone); + if (existing_version) { + *existing_version = objv_tracker.read_version; + } + + delete obj; + + return ret; +} + +int RGWMetadataManager::remove(string& metadata_key, optional_yield y, const DoutPrefixProvider *dpp) +{ + RGWMetadataHandler *handler; + string entry; + + int ret = find_handler(metadata_key, &handler, entry); + if (ret < 0) { + return ret; + } + + RGWMetadataObject *obj; + ret = handler->get(entry, &obj, y, dpp); + if (ret < 0) { + return ret; + } + RGWObjVersionTracker objv_tracker; + objv_tracker.read_version = obj->get_version(); + delete obj; + + return handler->remove(entry, objv_tracker, y, dpp); +} + +int RGWMetadataManager::mutate(const string& metadata_key, + const ceph::real_time& mtime, + RGWObjVersionTracker *objv_tracker, + optional_yield y, + const DoutPrefixProvider *dpp, + RGWMDLogStatus op_type, + std::function<int()> f) +{ + RGWMetadataHandler *handler; + string entry; + + int ret = find_handler(metadata_key, &handler, entry); + if (ret < 0) { + return ret; + } + + return handler->mutate(entry, mtime, objv_tracker, y, dpp, op_type, f); +} + +int RGWMetadataManager::get_shard_id(const string& section, const string& entry, int *shard_id) +{ + RGWMetadataHandler *handler = get_handler(section); + if (!handler) { + return -EINVAL; + } + + return handler->get_shard_id(entry, shard_id); +} + +struct list_keys_handle { + void *handle; + RGWMetadataHandler *handler; +}; + +int RGWMetadataManager::list_keys_init(const DoutPrefixProvider *dpp, const string& section, void **handle) +{ + return list_keys_init(dpp, section, string(), handle); +} + +int RGWMetadataManager::list_keys_init(const DoutPrefixProvider *dpp, const string& section, + const string& marker, void **handle) +{ + string entry; + RGWMetadataHandler *handler; + + int ret; + + ret = find_handler(section, &handler, entry); + if (ret < 0) { + return -ENOENT; + } + + list_keys_handle *h = new list_keys_handle; + h->handler = handler; + ret = handler->list_keys_init(dpp, marker, &h->handle); + if (ret < 0) { + delete h; + return ret; + } + + *handle = (void *)h; + + return 0; +} + +int RGWMetadataManager::list_keys_next(const DoutPrefixProvider *dpp, void *handle, int max, list<string>& keys, bool *truncated) +{ + list_keys_handle *h = static_cast<list_keys_handle *>(handle); + + RGWMetadataHandler *handler = h->handler; + + return handler->list_keys_next(dpp, h->handle, max, keys, truncated); +} + +void RGWMetadataManager::list_keys_complete(void *handle) +{ + list_keys_handle *h = static_cast<list_keys_handle *>(handle); + + RGWMetadataHandler *handler = h->handler; + + handler->list_keys_complete(h->handle); + delete h; +} + +string RGWMetadataManager::get_marker(void *handle) +{ + list_keys_handle *h = static_cast<list_keys_handle *>(handle); + + return h->handler->get_marker(h->handle); +} + +void RGWMetadataManager::dump_log_entry(cls_log_entry& entry, Formatter *f) +{ + f->open_object_section("entry"); + f->dump_string("id", entry.id); + f->dump_string("section", entry.section); + f->dump_string("name", entry.name); + entry.timestamp.gmtime_nsec(f->dump_stream("timestamp")); + + try { + RGWMetadataLogData log_data; + auto iter = entry.data.cbegin(); + decode(log_data, iter); + + encode_json("data", log_data, f); + } catch (buffer::error& err) { + lderr(cct) << "failed to decode log entry: " << entry.section << ":" << entry.name<< " ts=" << entry.timestamp << dendl; + } + f->close_section(); +} + +void RGWMetadataManager::get_sections(list<string>& sections) +{ + for (map<string, RGWMetadataHandler *>::iterator iter = handlers.begin(); iter != handlers.end(); ++iter) { + sections.push_back(iter->first); + } +} + |