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Objecter.h
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// -*- 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 <[email protected]>
*
* 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_OBJECTER_H
#define CEPH_OBJECTER_H
#include "include/types.h"
#include "include/buffer.h"
#include "include/xlist.h"
#include "osd/OSDMap.h"
#include "messages/MOSDOp.h"
#include "common/admin_socket.h"
#include "common/Timer.h"
#include <list>
#include <map>
#include <memory>
#include <ext/hash_map>
using namespace std;
using namespace __gnu_cxx;
class Context;
class Messenger;
class OSDMap;
class MonClient;
class Message;
class MPoolOpReply;
class MGetPoolStatsReply;
class MStatfsReply;
class PerfCounters;
// -----------------------------------------
struct ObjectOperation {
vector<OSDOp> ops;
int flags;
int priority;
vector<bufferlist*> out_bl;
vector<Context*> out_handler;
vector<int*> out_rval;
ObjectOperation() : flags(0), priority(0) {}
size_t size() {
return ops.size();
}
void set_last_op_flags(int flags) {
assert(!ops.empty());
ops.rbegin()->op.flags = flags;
}
OSDOp& add_op(int op) {
int s = ops.size();
ops.resize(s+1);
ops[s].op.op = op;
out_bl.resize(s+1);
out_bl[s] = NULL;
out_handler.resize(s+1);
out_handler[s] = NULL;
out_rval.resize(s+1);
out_rval[s] = NULL;
return ops[s];
}
void add_data(int op, uint64_t off, uint64_t len, bufferlist& bl) {
OSDOp& osd_op = add_op(op);
osd_op.op.op = op;
osd_op.op.extent.offset = off;
osd_op.op.extent.length = len;
osd_op.indata.claim_append(bl);
}
void add_clone_range(int op, uint64_t off, uint64_t len, const object_t& srcoid, uint64_t srcoff, snapid_t srcsnapid) {
OSDOp& osd_op = add_op(op);
osd_op.op.op = op;
osd_op.op.clonerange.offset = off;
osd_op.op.clonerange.length = len;
osd_op.op.clonerange.src_offset = srcoff;
osd_op.soid = sobject_t(srcoid, srcsnapid);
}
void add_xattr(int op, const char *name, const bufferlist& data) {
OSDOp& osd_op = add_op(op);
osd_op.op.op = op;
osd_op.op.xattr.name_len = (name ? strlen(name) : 0);
osd_op.op.xattr.value_len = data.length();
if (name)
osd_op.indata.append(name);
osd_op.indata.append(data);
}
void add_xattr_cmp(int op, const char *name, uint8_t cmp_op, uint8_t cmp_mode, const bufferlist& data) {
OSDOp& osd_op = add_op(op);
osd_op.op.op = op;
osd_op.op.xattr.name_len = (name ? strlen(name) : 0);
osd_op.op.xattr.value_len = data.length();
osd_op.op.xattr.cmp_op = cmp_op;
osd_op.op.xattr.cmp_mode = cmp_mode;
if (name)
osd_op.indata.append(name);
osd_op.indata.append(data);
}
void add_call(int op, const char *cname, const char *method, bufferlist &indata) {
OSDOp& osd_op = add_op(op);
osd_op.op.op = op;
osd_op.op.cls.class_len = strlen(cname);
osd_op.op.cls.method_len = strlen(method);
osd_op.op.cls.indata_len = indata.length();
osd_op.indata.append(cname, osd_op.op.cls.class_len);
osd_op.indata.append(method, osd_op.op.cls.method_len);
osd_op.indata.append(indata);
}
void add_watch(int op, uint64_t cookie, uint64_t ver, uint8_t flag, bufferlist& inbl) {
OSDOp& osd_op = add_op(op);
osd_op.op.op = op;
osd_op.op.watch.cookie = cookie;
osd_op.op.watch.ver = ver;
osd_op.op.watch.flag = flag;
osd_op.indata.append(inbl);
}
void add_pgls(int op, uint64_t count, collection_list_handle_t cookie, epoch_t start_epoch) {
OSDOp& osd_op = add_op(op);
osd_op.op.op = op;
osd_op.op.pgls.count = count;
osd_op.op.pgls.start_epoch = start_epoch;
::encode(cookie, osd_op.indata);
}
void add_pgls_filter(int op, uint64_t count, bufferlist& filter, collection_list_handle_t cookie, epoch_t start_epoch) {
OSDOp& osd_op = add_op(op);
osd_op.op.op = op;
osd_op.op.pgls.count = count;
osd_op.op.pgls.start_epoch = start_epoch;
string cname = "pg";
string mname = "filter";
::encode(cname, osd_op.indata);
::encode(mname, osd_op.indata);
::encode(cookie, osd_op.indata);
osd_op.indata.append(filter);
}
// ------
// pg
void pg_ls(uint64_t count, bufferlist& filter, collection_list_handle_t cookie, epoch_t start_epoch) {
if (filter.length() == 0)
add_pgls(CEPH_OSD_OP_PGLS, count, cookie, start_epoch);
else
add_pgls_filter(CEPH_OSD_OP_PGLS_FILTER, count, filter, cookie, start_epoch);
flags |= CEPH_OSD_FLAG_PGOP;
}
void create(bool excl) {
OSDOp& o = add_op(CEPH_OSD_OP_CREATE);
o.op.flags = (excl ? CEPH_OSD_OP_FLAG_EXCL : 0);
}
void create(bool excl, const string& category) {
OSDOp& o = add_op(CEPH_OSD_OP_CREATE);
o.op.flags = (excl ? CEPH_OSD_OP_FLAG_EXCL : 0);
::encode(category, o.indata);
}
struct C_ObjectOperation_stat : public Context {
bufferlist bl;
uint64_t *psize;
utime_t *pmtime;
time_t *ptime;
C_ObjectOperation_stat(uint64_t *ps, utime_t *pm, time_t *pt) : psize(ps), pmtime(pm), ptime(pt) {}
void finish(int r) {
if (r >= 0) {
bufferlist::iterator p = bl.begin();
try {
uint64_t size;
utime_t mtime;
::decode(size, p);
::decode(mtime, p);
if (psize)
*psize = size;
if (pmtime)
*pmtime = mtime;
if (ptime)
*ptime = mtime.sec();
}
catch (buffer::error& e) {
r = -EIO;
}
}
}
};
void stat(uint64_t *psize, utime_t *pmtime, int *prval) {
add_op(CEPH_OSD_OP_STAT);
unsigned p = ops.size() - 1;
C_ObjectOperation_stat *h = new C_ObjectOperation_stat(psize, pmtime, NULL);
out_bl[p] = &h->bl;
out_handler[p] = h;
out_rval[p] = prval;
}
void stat(uint64_t *psize, time_t *ptime, int *prval) {
add_op(CEPH_OSD_OP_STAT);
unsigned p = ops.size() - 1;
C_ObjectOperation_stat *h = new C_ObjectOperation_stat(psize, NULL, ptime);
out_bl[p] = &h->bl;
out_handler[p] = h;
out_rval[p] = prval;
}
// object data
void read(uint64_t off, uint64_t len, bufferlist *pbl, int *prval) {
bufferlist bl;
add_data(CEPH_OSD_OP_READ, off, len, bl);
unsigned p = ops.size() - 1;
out_bl[p] = pbl;
out_rval[p] = prval;
}
void write(uint64_t off, bufferlist& bl) {
add_data(CEPH_OSD_OP_WRITE, off, bl.length(), bl);
}
void write_full(bufferlist& bl) {
add_data(CEPH_OSD_OP_WRITEFULL, 0, bl.length(), bl);
}
void append(bufferlist& bl) {
add_data(CEPH_OSD_OP_APPEND, 0, bl.length(), bl);
}
void zero(uint64_t off, uint64_t len) {
bufferlist bl;
add_data(CEPH_OSD_OP_ZERO, off, len, bl);
}
void truncate(uint64_t off) {
bufferlist bl;
add_data(CEPH_OSD_OP_TRUNCATE, off, 0, bl);
}
void remove() {
bufferlist bl;
add_data(CEPH_OSD_OP_DELETE, 0, 0, bl);
}
void mapext(uint64_t off, uint64_t len) {
bufferlist bl;
add_data(CEPH_OSD_OP_MAPEXT, off, len, bl);
}
void sparse_read(uint64_t off, uint64_t len) {
bufferlist bl;
add_data(CEPH_OSD_OP_SPARSE_READ, off, len, bl);
}
void clone_range(const object_t& src_oid, uint64_t src_offset, uint64_t len, uint64_t dst_offset) {
add_clone_range(CEPH_OSD_OP_CLONERANGE, dst_offset, len, src_oid, src_offset, CEPH_NOSNAP);
}
// object attrs
void getxattr(const char *name, bufferlist *pbl, int *prval) {
bufferlist bl;
add_xattr(CEPH_OSD_OP_GETXATTR, name, bl);
unsigned p = ops.size() - 1;
out_bl[p] = pbl;
out_rval[p] = prval;
}
struct C_ObjectOperation_decodevals : public Context {
bufferlist bl;
std::map<std::string,bufferlist> *pattrs;
int *prval;
C_ObjectOperation_decodevals(std::map<std::string,bufferlist> *pa, int *pr)
: pattrs(pa), prval(pr) {}
void finish(int r) {
if (r >= 0) {
bufferlist::iterator p = bl.begin();
try {
if (pattrs)
::decode(*pattrs, p);
}
catch (buffer::error& e) {
if (prval)
*prval = -EIO;
}
}
}
};
struct C_ObjectOperation_decodekeys : public Context {
bufferlist bl;
std::set<std::string> *pattrs;
int *prval;
C_ObjectOperation_decodekeys(std::set<std::string> *pa, int *pr)
: pattrs(pa), prval(pr) {}
void finish(int r) {
if (r >= 0) {
bufferlist::iterator p = bl.begin();
try {
if (pattrs)
::decode(*pattrs, p);
}
catch (buffer::error& e) {
if (prval)
*prval = -EIO;
}
}
}
};
void getxattrs(std::map<std::string,bufferlist> *pattrs, int *prval) {
add_op(CEPH_OSD_OP_GETXATTRS);
if (pattrs || prval) {
unsigned p = ops.size() - 1;
C_ObjectOperation_decodevals *h = new C_ObjectOperation_decodevals(pattrs, prval);
out_handler[p] = h;
out_bl[p] = &h->bl;
out_rval[p] = prval;
}
}
void setxattr(const char *name, const bufferlist& bl) {
add_xattr(CEPH_OSD_OP_SETXATTR, name, bl);
}
void setxattr(const char *name, const string& s) {
bufferlist bl;
bl.append(s);
add_xattr(CEPH_OSD_OP_SETXATTR, name, bl);
}
void cmpxattr(const char *name, uint8_t cmp_op, uint8_t cmp_mode, const bufferlist& bl) {
add_xattr_cmp(CEPH_OSD_OP_CMPXATTR, name, cmp_op, cmp_mode, bl);
}
void rmxattr(const char *name) {
bufferlist bl;
add_xattr(CEPH_OSD_OP_RMXATTR, name, bl);
}
void setxattrs(map<string, bufferlist>& attrs) {
bufferlist bl;
::encode(attrs, bl);
add_xattr(CEPH_OSD_OP_RESETXATTRS, 0, bl.length());
}
void resetxattrs(const char *prefix, map<string, bufferlist>& attrs) {
bufferlist bl;
::encode(attrs, bl);
add_xattr(CEPH_OSD_OP_RESETXATTRS, prefix, bl);
}
// trivialmap
void tmap_update(bufferlist& bl) {
add_data(CEPH_OSD_OP_TMAPUP, 0, 0, bl);
}
void tmap_put(bufferlist& bl) {
add_data(CEPH_OSD_OP_TMAPPUT, 0, bl.length(), bl);
}
void tmap_get(bufferlist *pbl, int *prval) {
add_op(CEPH_OSD_OP_TMAPGET);
unsigned p = ops.size() - 1;
out_bl[p] = pbl;
out_rval[p] = prval;
}
void tmap_get() {
add_op(CEPH_OSD_OP_TMAPGET);
}
// objectmap
void omap_get_keys(const string &start_after,
uint64_t max_to_get,
std::set<std::string> *out_set,
int *prval) {
OSDOp &op = add_op(CEPH_OSD_OP_OMAPGETKEYS);
bufferlist bl;
::encode(start_after, bl);
::encode(max_to_get, bl);
op.op.extent.offset = 0;
op.op.extent.length = bl.length();
op.indata.claim_append(bl);
if (prval || out_set) {
unsigned p = ops.size() - 1;
C_ObjectOperation_decodekeys *h =
new C_ObjectOperation_decodekeys(out_set, prval);
out_handler[p] = h;
out_bl[p] = &h->bl;
out_rval[p] = prval;
}
}
void omap_get_vals(const string &start_after,
const string &filter_prefix,
uint64_t max_to_get,
std::map<std::string, bufferlist> *out_set,
int *prval) {
OSDOp &op = add_op(CEPH_OSD_OP_OMAPGETVALS);
bufferlist bl;
::encode(start_after, bl);
::encode(max_to_get, bl);
::encode(filter_prefix, bl);
op.op.extent.offset = 0;
op.op.extent.length = bl.length();
op.indata.claim_append(bl);
if (prval || out_set) {
unsigned p = ops.size() - 1;
C_ObjectOperation_decodevals *h =
new C_ObjectOperation_decodevals(out_set, prval);
out_handler[p] = h;
out_bl[p] = &h->bl;
out_rval[p] = prval;
}
}
void omap_get_vals_by_keys(const std::set<std::string> &to_get,
std::map<std::string, bufferlist> *out_set,
int *prval) {
OSDOp &op = add_op(CEPH_OSD_OP_OMAPGETVALSBYKEYS);
bufferlist bl;
::encode(to_get, bl);
op.op.extent.offset = 0;
op.op.extent.length = bl.length();
op.indata.claim_append(bl);
if (prval || out_set) {
unsigned p = ops.size() - 1;
C_ObjectOperation_decodevals *h =
new C_ObjectOperation_decodevals(out_set, prval);
out_handler[p] = h;
out_bl[p] = &h->bl;
out_rval[p] = prval;
}
}
void omap_get_header(bufferlist *bl, int *prval) {
add_op(CEPH_OSD_OP_OMAPGETHEADER);
unsigned p = ops.size() - 1;
out_bl[p] = bl;
out_rval[p] = prval;
}
void omap_set(const map<string, bufferlist> &map) {
bufferlist bl;
::encode(map, bl);
add_data(CEPH_OSD_OP_OMAPSETVALS, 0, bl.length(), bl);
}
void omap_set_header(bufferlist &bl) {
add_data(CEPH_OSD_OP_OMAPSETHEADER, 0, bl.length(), bl);
}
void omap_clear() {
add_op(CEPH_OSD_OP_OMAPCLEAR);
}
void omap_rm_keys(const std::set<std::string> &to_remove) {
bufferlist bl;
::encode(to_remove, bl);
add_data(CEPH_OSD_OP_OMAPRMKEYS, 0, bl.length(), bl);
}
// object classes
void call(const char *cname, const char *method, bufferlist &indata) {
add_call(CEPH_OSD_OP_CALL, cname, method, indata);
}
// watch/notify
void watch(uint64_t cookie, uint64_t ver, bool set) {
bufferlist inbl;
add_watch(CEPH_OSD_OP_WATCH, cookie, ver, (set ? 1 : 0), inbl);
}
void notify(uint64_t cookie, uint64_t ver, bufferlist& inbl) {
add_watch(CEPH_OSD_OP_NOTIFY, cookie, ver, 1, inbl);
}
void notify_ack(uint64_t notify_id, uint64_t ver) {
bufferlist bl;
add_watch(CEPH_OSD_OP_NOTIFY_ACK, notify_id, ver, 0, bl);
}
void assert_version(uint64_t ver) {
bufferlist bl;
add_watch(CEPH_OSD_OP_ASSERT_VER, 0, ver, 0, bl);
}
void assert_src_version(const object_t& srcoid, snapid_t srcsnapid, uint64_t ver) {
bufferlist bl;
add_watch(CEPH_OSD_OP_ASSERT_SRC_VERSION, 0, ver, 0, bl);
ops.rbegin()->soid = sobject_t(srcoid, srcsnapid);
}
void cmpxattr(const char *name, const bufferlist& val,
int op, int mode) {
add_xattr(CEPH_OSD_OP_CMPXATTR, name, val);
OSDOp& o = *ops.rbegin();
o.op.xattr.cmp_op = op;
o.op.xattr.cmp_mode = mode;
}
void src_cmpxattr(const object_t& srcoid, snapid_t srcsnapid,
const char *name, const bufferlist& val,
int op, int mode) {
add_xattr(CEPH_OSD_OP_SRC_CMPXATTR, name, val);
OSDOp& o = *ops.rbegin();
o.soid = sobject_t(srcoid, srcsnapid);
o.op.xattr.cmp_op = op;
o.op.xattr.cmp_mode = mode;
}
};
// ----------------
class Objecter {
public:
Messenger *messenger;
MonClient *monc;
OSDMap *osdmap;
CephContext *cct;
bool initialized;
private:
tid_t last_tid;
int client_inc;
uint64_t max_linger_id;
int num_unacked;
int num_uncommitted;
int global_op_flags; // flags which are applied to each IO op
bool keep_balanced_budget;
bool honor_osdmap_full;
void maybe_request_map(epoch_t epoch=0);
version_t last_seen_osdmap_version;
version_t last_seen_pgmap_version;
Mutex &client_lock;
SafeTimer &timer;
PerfCounters *logger;
class C_Tick : public Context {
Objecter *ob;
public:
C_Tick(Objecter *o) : ob(o) {}
void finish(int r) { ob->tick(); }
} *tick_event;
void schedule_tick();
void tick();
class RequestStateHook : public AdminSocketHook {
Objecter *m_objecter;
public:
RequestStateHook(Objecter *objecter);
bool call(std::string command, bufferlist& out);
};
RequestStateHook *m_request_state_hook;
public:
/*** track pending operations ***/
// read
public:
class OSDSession;
struct Op {
OSDSession *session;
xlist<Op*>::item session_item;
int incarnation;
object_t oid;
object_locator_t oloc;
pg_t pgid;
vector<int> acting;
bool used_replica;
Connection *con; // for rx buffer only
vector<OSDOp> ops;
snapid_t snapid;
SnapContext snapc;
utime_t mtime;
bufferlist *outbl;
vector<bufferlist*> out_bl;
vector<Context*> out_handler;
vector<int*> out_rval;
int flags, priority;
Context *onack, *oncommit;
tid_t tid;
eversion_t version; // for op replay
int attempts;
bool paused;
eversion_t *objver;
epoch_t *reply_epoch;
utime_t stamp;
bool precalc_pgid;
Op(const object_t& o, const object_locator_t& ol, vector<OSDOp>& op,
int f, Context *ac, Context *co, eversion_t *ov) :
session(NULL), session_item(this), incarnation(0),
oid(o), oloc(ol),
used_replica(false), con(NULL),
snapid(CEPH_NOSNAP),
outbl(NULL),
flags(f), priority(0), onack(ac), oncommit(co),
tid(0), attempts(0),
paused(false), objver(ov), reply_epoch(NULL), precalc_pgid(false) {
ops.swap(op);
/* initialize out_* to match op vector */
out_bl.resize(ops.size());
out_rval.resize(ops.size());
out_handler.resize(ops.size());
for (unsigned i = 0; i < ops.size(); i++) {
out_bl[i] = NULL;
out_handler[i] = NULL;
out_rval[i] = NULL;
}
if (oloc.key == o)
oloc.key.clear();
}
bool operator<(const Op& other) const {
return tid < other.tid;
}
};
struct C_Op_Map_Latest : public Context {
Objecter *objecter;
tid_t tid;
C_Op_Map_Latest(Objecter *o, tid_t t) : objecter(o), tid(t) {}
void finish(int r);
};
struct C_Stat : public Context {
bufferlist bl;
uint64_t *psize;
utime_t *pmtime;
Context *fin;
C_Stat(uint64_t *ps, utime_t *pm, Context *c) :
psize(ps), pmtime(pm), fin(c) {}
void finish(int r) {
if (r >= 0) {
bufferlist::iterator p = bl.begin();
uint64_t s;
utime_t m;
::decode(s, p);
::decode(m, p);
if (psize)
*psize = s;
if (pmtime)
*pmtime = m;
}
fin->finish(r);
delete fin;
}
};
struct C_GetAttrs : public Context {
bufferlist bl;
map<string,bufferlist>& attrset;
Context *fin;
C_GetAttrs(map<string, bufferlist>& set, Context *c) : attrset(set), fin(c) {}
void finish(int r) {
if (r >= 0) {
bufferlist::iterator p = bl.begin();
::decode(attrset, p);
}
fin->finish(r);
delete fin;
}
};
// Pools and statistics
struct ListContext {
int current_pg;
collection_list_handle_t cookie;
epoch_t current_pg_epoch;
int starting_pg_num;
bool at_end;
int64_t pool_id;
int pool_snap_seq;
int max_entries;
std::list<pair<object_t, string> > list;
bufferlist filter;
bufferlist extra_info;
ListContext() : current_pg(0), current_pg_epoch(0), starting_pg_num(0),
at_end(false), pool_id(0),
pool_snap_seq(0), max_entries(0) {}
};
struct C_List : public Context {
ListContext *list_context;
Context *final_finish;
bufferlist *bl;
Objecter *objecter;
epoch_t epoch;
C_List(ListContext *lc, Context * finish, bufferlist *b, Objecter *ob) :
list_context(lc), final_finish(finish), bl(b), objecter(ob), epoch(0) {}
void finish(int r) {
if (r >= 0) {
objecter->_list_reply(list_context, bl, final_finish, epoch);
} else {
final_finish->finish(r);
delete final_finish;
}
}
};
struct PoolStatOp {
tid_t tid;
list<string> pools;
map<string,pool_stat_t> *pool_stats;
Context *onfinish;
utime_t last_submit;
};
struct StatfsOp {
tid_t tid;
struct ceph_statfs *stats;
Context *onfinish;
utime_t last_submit;
};
struct PoolOp {
tid_t tid;
int64_t pool;
string name;
Context *onfinish;
int pool_op;
uint64_t auid;
__u8 crush_rule;
snapid_t snapid;
bufferlist *blp;
utime_t last_submit;
PoolOp() : tid(0), pool(0), onfinish(0), pool_op(0),
auid(0), crush_rule(0), snapid(0), blp(NULL) {}
};
// -- lingering ops --
struct LingerOp : public RefCountedObject {
uint64_t linger_id;
object_t oid;
object_locator_t oloc;
pg_t pgid;
vector<int> acting;
snapid_t snap;
int flags;
vector<OSDOp> ops;
bufferlist inbl;
bufferlist *poutbl;
eversion_t *pobjver;
bool registering, registered;
Context *on_reg_ack, *on_reg_commit;
OSDSession *session;
xlist<LingerOp*>::item session_item;
LingerOp() : linger_id(0), flags(0), poutbl(NULL), pobjver(NULL),
registering(false), registered(false),
on_reg_ack(NULL), on_reg_commit(NULL),
session(NULL), session_item(this) {}
// no copy!
const LingerOp &operator=(const LingerOp& r);
LingerOp(const LingerOp& o);
private:
~LingerOp() {}
};
struct C_Linger_Ack : public Context {
Objecter *objecter;
LingerOp *info;
C_Linger_Ack(Objecter *o, LingerOp *l) : objecter(o), info(l) {
info->get();
}
~C_Linger_Ack() {
info->put();
}
void finish(int r) {
objecter->_linger_ack(info, r);
}
};
struct C_Linger_Commit : public Context {
Objecter *objecter;
LingerOp *info;
C_Linger_Commit(Objecter *o, LingerOp *l) : objecter(o), info(l) {
info->get();
}
~C_Linger_Commit() {
info->put();
}
void finish(int r) {
objecter->_linger_commit(info, r);
}
};
struct C_Linger_Map_Latest : public Context {
Objecter *objecter;
uint64_t linger_id;
C_Linger_Map_Latest(Objecter *o, uint64_t id) :
objecter(o), linger_id(id) {}
void finish(int r);
};
// -- osd sessions --
struct OSDSession {
xlist<Op*> ops;
xlist<LingerOp*> linger_ops;
int osd;
int incarnation;
Connection *con;
OSDSession(int o) : osd(o), incarnation(0), con(NULL) {}
};
map<int,OSDSession*> osd_sessions;
private:
// pending ops
hash_map<tid_t,Op*> ops;
int num_homeless_ops;
map<uint64_t, LingerOp*> linger_ops;
map<tid_t,PoolStatOp*> poolstat_ops;
map<tid_t,StatfsOp*> statfs_ops;
map<tid_t,PoolOp*> pool_ops;
// ops waiting for an osdmap with a new pool or confirmation that
// the pool does not exist (may be expanded to other uses later)
map<uint64_t, LingerOp*> check_latest_map_lingers;
map<tid_t, Op*> check_latest_map_ops;
map<epoch_t,list< pair<Context*, int> > > waiting_for_map;
void send_op(Op *op);
bool is_pg_changed(vector<int>& a, vector<int>& b, bool any_change=false);
enum recalc_op_target_result {
RECALC_OP_TARGET_NO_ACTION = 0,
RECALC_OP_TARGET_NEED_RESEND,
RECALC_OP_TARGET_POOL_DNE,
};
int recalc_op_target(Op *op);
bool recalc_linger_op_target(LingerOp *op);
void send_linger(LingerOp *info);
void _linger_ack(LingerOp *info, int r);
void _linger_commit(LingerOp *info, int r);
void op_check_for_latest_map(Op *op);
void op_cancel_map_check(Op *op);
void linger_check_for_latest_map(LingerOp *op);
void linger_cancel_map_check(LingerOp *op);
void kick_requests(OSDSession *session);
OSDSession *get_session(int osd);
void reopen_session(OSDSession *session);
void close_session(OSDSession *session);
void _list_reply(ListContext *list_context, bufferlist *bl, Context *final_finish,
epoch_t reply_epoch);
void resend_mon_ops();
/**
* handle a budget for in-flight ops
* budget is taken whenever an op goes into the ops map
* and returned whenever an op is removed from the map
* If throttle_op needs to throttle it will unlock client_lock.
*/
int calc_op_budget(Op *op);
void throttle_op(Op *op, int op_size=0);
void take_op_budget(Op *op) {
int op_budget = calc_op_budget(op);
if (keep_balanced_budget) {
throttle_op(op, op_budget);
} else {
op_throttle_bytes.take(op_budget);
op_throttle_ops.take(1);
}
}
void put_op_budget(Op *op) {
int op_budget = calc_op_budget(op);
op_throttle_bytes.put(op_budget);
op_throttle_ops.put(1);
}
Throttle op_throttle_bytes, op_throttle_ops;
public:
Objecter(CephContext *cct_, Messenger *m, MonClient *mc,
OSDMap *om, Mutex& l, SafeTimer& t) :
messenger(m), monc(mc), osdmap(om), cct(cct_),
initialized(false),
last_tid(0), client_inc(-1), max_linger_id(0),
num_unacked(0), num_uncommitted(0),
global_op_flags(0),
keep_balanced_budget(false), honor_osdmap_full(true),
last_seen_osdmap_version(0),
last_seen_pgmap_version(0),
client_lock(l), timer(t),
logger(NULL), tick_event(NULL),
m_request_state_hook(NULL),
num_homeless_ops(0),
op_throttle_bytes(cct, "objecter_bytes", cct->_conf->objecter_inflight_op_bytes),
op_throttle_ops(cct, "objecter_ops", cct->_conf->objecter_inflight_ops)
{ }
~Objecter() {
assert(!tick_event);
assert(!m_request_state_hook);
assert(!logger);
}
void init();
void shutdown();
/**
* Tell the objecter to throttle outgoing ops according to its
* budget (in _conf). If you do this, ops can block, in
* which case it will unlock client_lock and sleep until
* incoming messages reduce the used budget low enough for
* the ops to continue going; then it will lock client_lock again.
*/
void set_balanced_budget() { keep_balanced_budget = true; }
void unset_balanced_budget() { keep_balanced_budget = false; }
void set_honor_osdmap_full() { honor_osdmap_full = true; }
void unset_honor_osdmap_full() { honor_osdmap_full = false; }
// messages
public:
void dispatch(Message *m);
void handle_osd_op_reply(class MOSDOpReply *m);
void handle_osd_map(class MOSDMap *m);
void wait_for_osd_map();
private:
// low-level
tid_t op_submit(Op *op, OSDSession *s = NULL);
// public interface
public:
bool is_active() {
return !(ops.empty() && linger_ops.empty() && poolstat_ops.empty() && statfs_ops.empty());
}
/**
* Output in-flight requests
*/
void dump_active();
void dump_requests(Formatter& fmt) const;
void dump_ops(Formatter& fmt) const;
void dump_linger_ops(Formatter& fmt) const;
void dump_pool_ops(Formatter& fmt) const;
void dump_pool_stat_ops(Formatter& fmt) const;
void dump_statfs_ops(Formatter& fmt) const;
int get_client_incarnation() const { return client_inc; }
void set_client_incarnation(int inc) { client_inc = inc; }
void wait_for_new_map(Context *c, epoch_t epoch, int replyCode=0) {
maybe_request_map(epoch);
waiting_for_map[epoch].push_back(pair<Context *, int>(c, replyCode));
}
/** Get the current set of global op flags */
int get_global_op_flags() { return global_op_flags; }
/** Add a flag to the global op flags */
void add_global_op_flags(int flag) { global_op_flags |= flag; }
/** Clear the passed flags from the global op flag set */
void clear_global_op_flag(int flags) { global_op_flags &= ~flags; }
// mid-level helpers
tid_t mutate(const object_t& oid, const object_locator_t& oloc,
ObjectOperation& op,
const SnapContext& snapc, utime_t mtime, int flags,
Context *onack, Context *oncommit, eversion_t *objver = NULL) {
Op *o = new Op(oid, oloc, op.ops, flags | global_op_flags | CEPH_OSD_FLAG_WRITE, onack, oncommit, objver);
o->priority = op.priority;
o->mtime = mtime;