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Diffstat (limited to '')
-rw-r--r-- | src/rgw/rgw_sync_error_repo.cc | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/rgw/rgw_sync_error_repo.cc b/src/rgw/rgw_sync_error_repo.cc new file mode 100644 index 000000000..1f332276d --- /dev/null +++ b/src/rgw/rgw_sync_error_repo.cc @@ -0,0 +1,137 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab ft=cpp + +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2020 Red Hat, Inc + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + */ + +#include "rgw_sync_error_repo.h" +#include "rgw_coroutine.h" +#include "rgw_sal.h" +#include "services/svc_rados.h" +#include "cls/cmpomap/client.h" + +ceph::real_time rgw_error_repo_decode_value(const bufferlist& bl) +{ + uint64_t value; + try { + using ceph::decode; + decode(value, bl); + } catch (const buffer::error&) { + value = 0; // empty buffer = 0 + } + return ceph::real_clock::zero() + ceph::timespan(value); +} + +int rgw_error_repo_write(librados::ObjectWriteOperation& op, + const std::string& key, + ceph::real_time timestamp) +{ + // overwrite the existing timestamp if value is greater + const uint64_t value = timestamp.time_since_epoch().count(); + using namespace cls::cmpomap; + const bufferlist zero = u64_buffer(0); // compare against 0 for missing keys + return cmp_set_vals(op, Mode::U64, Op::GT, {{key, u64_buffer(value)}}, zero); +} + +int rgw_error_repo_remove(librados::ObjectWriteOperation& op, + const std::string& key, + ceph::real_time timestamp) +{ + // remove the omap key if value >= existing + const uint64_t value = timestamp.time_since_epoch().count(); + using namespace cls::cmpomap; + return cmp_rm_keys(op, Mode::U64, Op::GTE, {{key, u64_buffer(value)}}); +} + +class RGWErrorRepoWriteCR : public RGWSimpleCoroutine { + RGWSI_RADOS::Obj obj; + std::string key; + ceph::real_time timestamp; + + boost::intrusive_ptr<RGWAioCompletionNotifier> cn; + public: + RGWErrorRepoWriteCR(RGWSI_RADOS* rados, const rgw_raw_obj& raw_obj, + const std::string& key, ceph::real_time timestamp) + : RGWSimpleCoroutine(rados->ctx()), + obj(rados->obj(raw_obj)), + key(key), timestamp(timestamp) + {} + + int send_request(const DoutPrefixProvider *dpp) override { + librados::ObjectWriteOperation op; + int r = rgw_error_repo_write(op, key, timestamp); + if (r < 0) { + return r; + } + r = obj.open(dpp); + if (r < 0) { + return r; + } + + cn = stack->create_completion_notifier(); + return obj.aio_operate(cn->completion(), &op); + } + + int request_complete() override { + return cn->completion()->get_return_value(); + } +}; + +RGWCoroutine* rgw_error_repo_write_cr(RGWSI_RADOS* rados, + const rgw_raw_obj& obj, + const std::string& key, + ceph::real_time timestamp) +{ + return new RGWErrorRepoWriteCR(rados, obj, key, timestamp); +} + + +class RGWErrorRepoRemoveCR : public RGWSimpleCoroutine { + RGWSI_RADOS::Obj obj; + std::string key; + ceph::real_time timestamp; + + boost::intrusive_ptr<RGWAioCompletionNotifier> cn; + public: + RGWErrorRepoRemoveCR(RGWSI_RADOS* rados, const rgw_raw_obj& raw_obj, + const std::string& key, ceph::real_time timestamp) + : RGWSimpleCoroutine(rados->ctx()), + obj(rados->obj(raw_obj)), + key(key), timestamp(timestamp) + {} + + int send_request(const DoutPrefixProvider *dpp) override { + librados::ObjectWriteOperation op; + int r = rgw_error_repo_remove(op, key, timestamp); + if (r < 0) { + return r; + } + r = obj.open(dpp); + if (r < 0) { + return r; + } + + cn = stack->create_completion_notifier(); + return obj.aio_operate(cn->completion(), &op); + } + + int request_complete() override { + return cn->completion()->get_return_value(); + } +}; + +RGWCoroutine* rgw_error_repo_remove_cr(RGWSI_RADOS* rados, + const rgw_raw_obj& obj, + const std::string& key, + ceph::real_time timestamp) +{ + return new RGWErrorRepoRemoveCR(rados, obj, key, timestamp); +} |