+++ /dev/null
-// -*- 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_MOSDOP_H
-#define CEPH_MOSDOP_H
-
-#include "MOSDFastDispatchOp.h"
-#include "include/ceph_features.h"
-#include "common/hobject.h"
-#include <atomic>
-
-/*
- * OSD op
- *
- * oid - object id
- * op - OSD_OP_DELETE, etc.
- *
- */
-
-class OSD;
-
-class MOSDOp : public MOSDFastDispatchOp {
-
- static const int HEAD_VERSION = 8;
- static const int COMPAT_VERSION = 3;
-
-private:
- uint32_t client_inc = 0;
- __u32 osdmap_epoch = 0;
- __u32 flags = 0;
- utime_t mtime;
- int32_t retry_attempt = -1; // 0 is first attempt. -1 if we don't know.
-
- hobject_t hobj;
- spg_t pgid;
- bufferlist::iterator p;
- // Decoding flags. Decoding is only needed for messages catched by pipe reader.
- // Transition from true -> false without locks being held
- // Can never see final_decode_needed == false and partial_decode_needed == true
- atomic<bool> partial_decode_needed;
- atomic<bool> final_decode_needed;
- //
-public:
- vector<OSDOp> ops;
-private:
- snapid_t snap_seq;
- vector<snapid_t> snaps;
-
- uint64_t features;
-
- osd_reqid_t reqid; // reqid explicitly set by sender
-
-public:
- friend class MOSDOpReply;
-
- ceph_tid_t get_client_tid() { return header.tid; }
- void set_snapid(const snapid_t& s) {
- hobj.snap = s;
- }
- void set_snaps(const vector<snapid_t>& i) {
- snaps = i;
- }
- void set_snap_seq(const snapid_t& s) { snap_seq = s; }
- void set_reqid(const osd_reqid_t rid) {
- reqid = rid;
- }
- void set_spg(spg_t p) {
- pgid = p;
- }
-
- // Fields decoded in partial decoding
- pg_t get_pg() const {
- assert(!partial_decode_needed);
- return pgid.pgid;
- }
- spg_t get_spg() const override {
- assert(!partial_decode_needed);
- return pgid;
- }
- pg_t get_raw_pg() const {
- assert(!partial_decode_needed);
- return pg_t(hobj.get_hash(), pgid.pgid.pool());
- }
- epoch_t get_map_epoch() const override {
- assert(!partial_decode_needed);
- return osdmap_epoch;
- }
- int get_flags() const {
- assert(!partial_decode_needed);
- return flags;
- }
- osd_reqid_t get_reqid() const {
- assert(!partial_decode_needed);
- if (reqid.name != entity_name_t() || reqid.tid != 0) {
- return reqid;
- } else {
- if (!final_decode_needed)
- assert(reqid.inc == (int32_t)client_inc); // decode() should have done this
- return osd_reqid_t(get_orig_source(),
- reqid.inc,
- header.tid);
- }
- }
-
- // Fields decoded in final decoding
- int get_client_inc() const {
- assert(!final_decode_needed);
- return client_inc;
- }
- utime_t get_mtime() const {
- assert(!final_decode_needed);
- return mtime;
- }
- object_locator_t get_object_locator() const {
- assert(!final_decode_needed);
- if (hobj.oid.name.empty())
- return object_locator_t(hobj.pool, hobj.nspace, hobj.get_hash());
- else
- return object_locator_t(hobj);
- }
- const object_t& get_oid() const {
- assert(!final_decode_needed);
- return hobj.oid;
- }
- const hobject_t &get_hobj() const {
- return hobj;
- }
- snapid_t get_snapid() const {
- assert(!final_decode_needed);
- return hobj.snap;
- }
- const snapid_t& get_snap_seq() const {
- assert(!final_decode_needed);
- return snap_seq;
- }
- const vector<snapid_t> &get_snaps() const {
- assert(!final_decode_needed);
- return snaps;
- }
-
- /**
- * get retry attempt
- *
- * 0 is the first attempt.
- *
- * @return retry attempt, or -1 if we don't know
- */
- int get_retry_attempt() const {
- return retry_attempt;
- }
- uint64_t get_features() const {
- if (features)
- return features;
- return get_connection()->get_features();
- }
-
- MOSDOp()
- : MOSDFastDispatchOp(CEPH_MSG_OSD_OP, HEAD_VERSION, COMPAT_VERSION),
- partial_decode_needed(true),
- final_decode_needed(true) { }
- MOSDOp(int inc, long tid, const hobject_t& ho, spg_t& _pgid,
- epoch_t _osdmap_epoch,
- int _flags, uint64_t feat)
- : MOSDFastDispatchOp(CEPH_MSG_OSD_OP, HEAD_VERSION, COMPAT_VERSION),
- client_inc(inc),
- osdmap_epoch(_osdmap_epoch), flags(_flags), retry_attempt(-1),
- hobj(ho),
- pgid(_pgid),
- partial_decode_needed(false),
- final_decode_needed(false),
- features(feat) {
- set_tid(tid);
-
- // also put the client_inc in reqid.inc, so that get_reqid() can
- // be used before the full message is decoded.
- reqid.inc = inc;
- }
-private:
- ~MOSDOp() override {}
-
-public:
- void set_mtime(utime_t mt) { mtime = mt; }
- void set_mtime(ceph::real_time mt) {
- mtime = ceph::real_clock::to_timespec(mt);
- }
-
- // ops
- void add_simple_op(int o, uint64_t off, uint64_t len) {
- OSDOp osd_op;
- osd_op.op.op = o;
- osd_op.op.extent.offset = off;
- osd_op.op.extent.length = len;
- ops.push_back(osd_op);
- }
- void write(uint64_t off, uint64_t len, bufferlist& bl) {
- add_simple_op(CEPH_OSD_OP_WRITE, off, len);
- data.claim(bl);
- header.data_off = off;
- }
- void writefull(bufferlist& bl) {
- add_simple_op(CEPH_OSD_OP_WRITEFULL, 0, bl.length());
- data.claim(bl);
- header.data_off = 0;
- }
- void zero(uint64_t off, uint64_t len) {
- add_simple_op(CEPH_OSD_OP_ZERO, off, len);
- }
- void truncate(uint64_t off) {
- add_simple_op(CEPH_OSD_OP_TRUNCATE, off, 0);
- }
- void remove() {
- add_simple_op(CEPH_OSD_OP_DELETE, 0, 0);
- }
-
- void read(uint64_t off, uint64_t len) {
- add_simple_op(CEPH_OSD_OP_READ, off, len);
- }
- void stat() {
- add_simple_op(CEPH_OSD_OP_STAT, 0, 0);
- }
-
- bool has_flag(__u32 flag) const { return flags & flag; };
-
- bool is_retry_attempt() const { return flags & CEPH_OSD_FLAG_RETRY; }
- void set_retry_attempt(unsigned a) {
- if (a)
- flags |= CEPH_OSD_FLAG_RETRY;
- else
- flags &= ~CEPH_OSD_FLAG_RETRY;
- retry_attempt = a;
- }
-
- // marshalling
- void encode_payload(uint64_t features) override {
-
- OSDOp::merge_osd_op_vector_in_data(ops, data);
-
- if ((features & CEPH_FEATURE_OBJECTLOCATOR) == 0) {
- // here is the old structure we are encoding to: //
-#if 0
-struct ceph_osd_request_head {
- __le32 client_inc; /* client incarnation */
- struct ceph_object_layout layout; /* pgid */
- __le32 osdmap_epoch; /* client's osdmap epoch */
-
- __le32 flags;
-
- struct ceph_timespec mtime; /* for mutations only */
- struct ceph_eversion reassert_version; /* if we are replaying op */
-
- __le32 object_len; /* length of object name */
-
- __le64 snapid; /* snapid to read */
- __le64 snap_seq; /* writer's snap context */
- __le32 num_snaps;
-
- __le16 num_ops;
- struct ceph_osd_op ops[]; /* followed by ops[], obj, ticket, snaps */
-} __attribute__ ((packed));
-#endif
- header.version = 1;
-
- ::encode(client_inc, payload);
-
- __u32 su = 0;
- ::encode(get_raw_pg(), payload);
- ::encode(su, payload);
-
- ::encode(osdmap_epoch, payload);
- ::encode(flags, payload);
- ::encode(mtime, payload);
- ::encode(eversion_t(), payload); // reassert_version
-
- __u32 oid_len = hobj.oid.name.length();
- ::encode(oid_len, payload);
- ::encode(hobj.snap, payload);
- ::encode(snap_seq, payload);
- __u32 num_snaps = snaps.size();
- ::encode(num_snaps, payload);
-
- //::encode(ops, payload);
- __u16 num_ops = ops.size();
- ::encode(num_ops, payload);
- for (unsigned i = 0; i < ops.size(); i++)
- ::encode(ops[i].op, payload);
-
- ::encode_nohead(hobj.oid.name, payload);
- ::encode_nohead(snaps, payload);
- } else if ((features & CEPH_FEATURE_NEW_OSDOP_ENCODING) == 0) {
- header.version = 6;
- ::encode(client_inc, payload);
- ::encode(osdmap_epoch, payload);
- ::encode(flags, payload);
- ::encode(mtime, payload);
- ::encode(eversion_t(), payload); // reassert_version
- ::encode(get_object_locator(), payload);
- ::encode(get_raw_pg(), payload);
-
- ::encode(hobj.oid, payload);
-
- __u16 num_ops = ops.size();
- ::encode(num_ops, payload);
- for (unsigned i = 0; i < ops.size(); i++)
- ::encode(ops[i].op, payload);
-
- ::encode(hobj.snap, payload);
- ::encode(snap_seq, payload);
- ::encode(snaps, payload);
-
- ::encode(retry_attempt, payload);
- ::encode(features, payload);
- if (reqid.name != entity_name_t() || reqid.tid != 0) {
- ::encode(reqid, payload);
- } else {
- // don't include client_inc in the reqid for the legacy v6
- // encoding or else we'll confuse older peers.
- ::encode(osd_reqid_t(), payload);
- }
- } else if (!HAVE_FEATURE(features, RESEND_ON_SPLIT)) {
- // reordered, v7 message encoding
- header.version = 7;
- ::encode(get_raw_pg(), payload);
- ::encode(osdmap_epoch, payload);
- ::encode(flags, payload);
- ::encode(eversion_t(), payload); // reassert_version
- ::encode(reqid, payload);
- ::encode(client_inc, payload);
- ::encode(mtime, payload);
- ::encode(get_object_locator(), payload);
- ::encode(hobj.oid, payload);
-
- __u16 num_ops = ops.size();
- ::encode(num_ops, payload);
- for (unsigned i = 0; i < ops.size(); i++)
- ::encode(ops[i].op, payload);
-
- ::encode(hobj.snap, payload);
- ::encode(snap_seq, payload);
- ::encode(snaps, payload);
-
- ::encode(retry_attempt, payload);
- ::encode(features, payload);
- } else {
- // latest v8 encoding with hobject_t hash separate from pgid, no
- // reassert version
- header.version = HEAD_VERSION;
- ::encode(pgid, payload);
- ::encode(hobj.get_hash(), payload);
- ::encode(osdmap_epoch, payload);
- ::encode(flags, payload);
- ::encode(reqid, payload);
- encode_trace(payload, features);
-
- // -- above decoded up front; below decoded post-dispatch thread --
-
- ::encode(client_inc, payload);
- ::encode(mtime, payload);
- ::encode(get_object_locator(), payload);
- ::encode(hobj.oid, payload);
-
- __u16 num_ops = ops.size();
- ::encode(num_ops, payload);
- for (unsigned i = 0; i < ops.size(); i++)
- ::encode(ops[i].op, payload);
-
- ::encode(hobj.snap, payload);
- ::encode(snap_seq, payload);
- ::encode(snaps, payload);
-
- ::encode(retry_attempt, payload);
- ::encode(features, payload);
- }
- }
-
- void decode_payload() override {
- assert(partial_decode_needed && final_decode_needed);
- p = payload.begin();
-
- // Always keep here the newest version of decoding order/rule
- if (header.version == HEAD_VERSION) {
- ::decode(pgid, p); // actual pgid
- uint32_t hash;
- ::decode(hash, p); // raw hash value
- hobj.set_hash(hash);
- ::decode(osdmap_epoch, p);
- ::decode(flags, p);
- ::decode(reqid, p);
- decode_trace(p);
- } else if (header.version == 7) {
- ::decode(pgid.pgid, p); // raw pgid
- hobj.set_hash(pgid.pgid.ps());
- ::decode(osdmap_epoch, p);
- ::decode(flags, p);
- eversion_t reassert_version;
- ::decode(reassert_version, p);
- ::decode(reqid, p);
- } else if (header.version < 2) {
- // old decode
- ::decode(client_inc, p);
-
- old_pg_t opgid;
- ::decode_raw(opgid, p);
- pgid.pgid = opgid;
-
- __u32 su;
- ::decode(su, p);
-
- ::decode(osdmap_epoch, p);
- ::decode(flags, p);
- ::decode(mtime, p);
- eversion_t reassert_version;
- ::decode(reassert_version, p);
-
- __u32 oid_len;
- ::decode(oid_len, p);
- ::decode(hobj.snap, p);
- ::decode(snap_seq, p);
- __u32 num_snaps;
- ::decode(num_snaps, p);
-
- //::decode(ops, p);
- __u16 num_ops;
- ::decode(num_ops, p);
- ops.resize(num_ops);
- for (unsigned i = 0; i < num_ops; i++)
- ::decode(ops[i].op, p);
-
- decode_nohead(oid_len, hobj.oid.name, p);
- decode_nohead(num_snaps, snaps, p);
-
- // recalculate pgid hash value
- pgid.pgid.set_ps(ceph_str_hash(CEPH_STR_HASH_RJENKINS,
- hobj.oid.name.c_str(),
- hobj.oid.name.length()));
- hobj.pool = pgid.pgid.pool();
- hobj.set_hash(pgid.pgid.ps());
-
- retry_attempt = -1;
- features = 0;
- OSDOp::split_osd_op_vector_in_data(ops, data);
-
- // we did the full decode
- final_decode_needed = false;
-
- // put client_inc in reqid.inc for get_reqid()'s benefit
- reqid = osd_reqid_t();
- reqid.inc = client_inc;
- } else if (header.version < 7) {
- ::decode(client_inc, p);
- ::decode(osdmap_epoch, p);
- ::decode(flags, p);
- ::decode(mtime, p);
- eversion_t reassert_version;
- ::decode(reassert_version, p);
-
- object_locator_t oloc;
- ::decode(oloc, p);
-
- if (header.version < 3) {
- old_pg_t opgid;
- ::decode_raw(opgid, p);
- pgid.pgid = opgid;
- } else {
- ::decode(pgid.pgid, p);
- }
-
- ::decode(hobj.oid, p);
-
- //::decode(ops, p);
- __u16 num_ops;
- ::decode(num_ops, p);
- ops.resize(num_ops);
- for (unsigned i = 0; i < num_ops; i++)
- ::decode(ops[i].op, p);
-
- ::decode(hobj.snap, p);
- ::decode(snap_seq, p);
- ::decode(snaps, p);
-
- if (header.version >= 4)
- ::decode(retry_attempt, p);
- else
- retry_attempt = -1;
-
- if (header.version >= 5)
- ::decode(features, p);
- else
- features = 0;
-
- if (header.version >= 6)
- ::decode(reqid, p);
- else
- reqid = osd_reqid_t();
-
- hobj.pool = pgid.pgid.pool();
- hobj.set_key(oloc.key);
- hobj.nspace = oloc.nspace;
- hobj.set_hash(pgid.pgid.ps());
-
- OSDOp::split_osd_op_vector_in_data(ops, data);
-
- // we did the full decode
- final_decode_needed = false;
-
- // put client_inc in reqid.inc for get_reqid()'s benefit
- if (reqid.name == entity_name_t() && reqid.tid == 0)
- reqid.inc = client_inc;
- }
-
- partial_decode_needed = false;
- }
-
- bool finish_decode() {
- assert(!partial_decode_needed); // partial decoding required
- if (!final_decode_needed)
- return false; // Message is already final decoded
- assert(header.version >= 7);
-
- ::decode(client_inc, p);
- ::decode(mtime, p);
- object_locator_t oloc;
- ::decode(oloc, p);
- ::decode(hobj.oid, p);
-
- __u16 num_ops;
- ::decode(num_ops, p);
- ops.resize(num_ops);
- for (unsigned i = 0; i < num_ops; i++)
- ::decode(ops[i].op, p);
-
- ::decode(hobj.snap, p);
- ::decode(snap_seq, p);
- ::decode(snaps, p);
-
- ::decode(retry_attempt, p);
-
- ::decode(features, p);
-
- hobj.pool = pgid.pgid.pool();
- hobj.set_key(oloc.key);
- hobj.nspace = oloc.nspace;
-
- OSDOp::split_osd_op_vector_in_data(ops, data);
-
- final_decode_needed = false;
- return true;
- }
-
- void clear_buffers() override {
- OSDOp::clear_data(ops);
- }
-
- const char *get_type_name() const override { return "osd_op"; }
- void print(ostream& out) const override {
- out << "osd_op(";
- if (!partial_decode_needed) {
- out << get_reqid() << ' ';
- out << pgid;
- if (!final_decode_needed) {
- out << ' ';
- out << hobj
- << " " << ops
- << " snapc " << get_snap_seq() << "=" << snaps;
- if (is_retry_attempt())
- out << " RETRY=" << get_retry_attempt();
- } else {
- out << " " << get_raw_pg() << " (undecoded)";
- }
- out << " " << ceph_osd_flag_string(get_flags());
- out << " e" << osdmap_epoch;
- }
- out << ")";
- }
-};
-
-
-#endif
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