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Diffstat (limited to 'src/messages/MOSDRepOp.h')
| -rw-r--r-- | src/messages/MOSDRepOp.h | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/src/messages/MOSDRepOp.h b/src/messages/MOSDRepOp.h new file mode 100644 index 000000000..ecfe3294d --- /dev/null +++ b/src/messages/MOSDRepOp.h @@ -0,0 +1,196 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net> + * + * 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. + * + */ + + +#ifndef CEPH_MOSDREPOP_H +#define CEPH_MOSDREPOP_H + +#include "MOSDFastDispatchOp.h" + +/* + * OSD sub op - for internal ops on pobjects between primary and replicas(/stripes/whatever) + */ + +class MOSDRepOp final : public MOSDFastDispatchOp { +private: + static constexpr int HEAD_VERSION = 3; + static constexpr int COMPAT_VERSION = 1; + +public: + epoch_t map_epoch, min_epoch; + + // metadata from original request + osd_reqid_t reqid; + + spg_t pgid; + + ceph::buffer::list::const_iterator p; + // Decoding flags. Decoding is only needed for messages caught by pipe reader. + bool final_decode_needed; + + // subop + pg_shard_t from; + hobject_t poid; + + __u8 acks_wanted; + + // transaction to exec + ceph::buffer::list logbl; + pg_stat_t pg_stats; + + // subop metadata + eversion_t version; + + // piggybacked osd/og state + eversion_t pg_trim_to; // primary->replica: trim to here + eversion_t min_last_complete_ondisk; // lower bound on committed version + + hobject_t new_temp_oid; ///< new temp object that we must now start tracking + hobject_t discard_temp_oid; ///< previously used temp object that we can now stop tracking + + /// non-empty if this transaction involves a hit_set history update + std::optional<pg_hit_set_history_t> updated_hit_set_history; + + epoch_t get_map_epoch() const override { + return map_epoch; + } + epoch_t get_min_epoch() const override { + return min_epoch; + } + spg_t get_spg() const override { + return pgid; + } + + int get_cost() const override { + return data.length(); + } + + void decode_payload() override { + using ceph::decode; + p = payload.cbegin(); + // split to partial and final + decode(map_epoch, p); + if (header.version >= 2) { + decode(min_epoch, p); + decode_trace(p); + } else { + min_epoch = map_epoch; + } + decode(reqid, p); + decode(pgid, p); + } + + void finish_decode() { + using ceph::decode; + if (!final_decode_needed) + return; // Message is already final decoded + decode(poid, p); + + decode(acks_wanted, p); + decode(version, p); + decode(logbl, p); + decode(pg_stats, p); + decode(pg_trim_to, p); + + + decode(new_temp_oid, p); + decode(discard_temp_oid, p); + + decode(from, p); + decode(updated_hit_set_history, p); + + if (header.version >= 3) { + decode(min_last_complete_ondisk, p); + } else { + /* This field used to mean pg_roll_foward_to, but ReplicatedBackend + * simply assumes that we're rolling foward to version. */ + eversion_t pg_roll_forward_to; + decode(pg_roll_forward_to, p); + } + final_decode_needed = false; + } + + void encode_payload(uint64_t features) override { + using ceph::encode; + encode(map_epoch, payload); + assert(HAVE_FEATURE(features, SERVER_OCTOPUS)); + header.version = HEAD_VERSION; + encode(min_epoch, payload); + encode_trace(payload, features); + encode(reqid, payload); + encode(pgid, payload); + encode(poid, payload); + + encode(acks_wanted, payload); + encode(version, payload); + encode(logbl, payload); + encode(pg_stats, payload); + encode(pg_trim_to, payload); + encode(new_temp_oid, payload); + encode(discard_temp_oid, payload); + encode(from, payload); + encode(updated_hit_set_history, payload); + encode(min_last_complete_ondisk, payload); + } + + MOSDRepOp() + : MOSDFastDispatchOp{MSG_OSD_REPOP, HEAD_VERSION, COMPAT_VERSION}, + map_epoch(0), + final_decode_needed(true), acks_wanted (0) {} + MOSDRepOp(osd_reqid_t r, pg_shard_t from, + spg_t p, const hobject_t& po, int aw, + epoch_t mape, epoch_t min_epoch, ceph_tid_t rtid, eversion_t v) + : MOSDFastDispatchOp{MSG_OSD_REPOP, HEAD_VERSION, COMPAT_VERSION}, + map_epoch(mape), + min_epoch(min_epoch), + reqid(r), + pgid(p), + final_decode_needed(false), + from(from), + poid(po), + acks_wanted(aw), + version(v) { + set_tid(rtid); + } + + void set_rollback_to(const eversion_t &rollback_to) { + header.version = 2; + min_last_complete_ondisk = rollback_to; + } +private: + ~MOSDRepOp() final {} + +public: + std::string_view get_type_name() const override { return "osd_repop"; } + void print(std::ostream& out) const override { + out << "osd_repop(" << reqid + << " " << pgid << " e" << map_epoch << "/" << min_epoch; + if (!final_decode_needed) { + out << " " << poid << " v " << version; + if (updated_hit_set_history) + out << ", has_updated_hit_set_history"; + if (header.version < 3) { + out << ", rollback_to(legacy)=" << min_last_complete_ondisk; + } else { + out << ", mlcod=" << min_last_complete_ondisk; + } + } + out << ")"; + } +private: + template<class T, typename... Args> + friend boost::intrusive_ptr<T> ceph::make_message(Args&&... args); +}; + +#endif |