From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 20:24:20 +0200 Subject: Adding upstream version 14.2.21. Signed-off-by: Daniel Baumann --- src/crimson/os/CMakeLists.txt | 7 + src/crimson/os/Transaction.cc | 507 +++++++++++++++ src/crimson/os/Transaction.h | 1234 +++++++++++++++++++++++++++++++++++++ src/crimson/os/cyan_collection.cc | 76 +++ src/crimson/os/cyan_collection.h | 55 ++ src/crimson/os/cyan_object.cc | 88 +++ src/crimson/os/cyan_object.h | 38 ++ src/crimson/os/cyan_store.cc | 277 +++++++++ src/crimson/os/cyan_store.h | 63 ++ 9 files changed, 2345 insertions(+) create mode 100644 src/crimson/os/CMakeLists.txt create mode 100644 src/crimson/os/Transaction.cc create mode 100644 src/crimson/os/Transaction.h create mode 100644 src/crimson/os/cyan_collection.cc create mode 100644 src/crimson/os/cyan_collection.h create mode 100644 src/crimson/os/cyan_object.cc create mode 100644 src/crimson/os/cyan_object.h create mode 100644 src/crimson/os/cyan_store.cc create mode 100644 src/crimson/os/cyan_store.h (limited to 'src/crimson/os') diff --git a/src/crimson/os/CMakeLists.txt b/src/crimson/os/CMakeLists.txt new file mode 100644 index 00000000..264e3525 --- /dev/null +++ b/src/crimson/os/CMakeLists.txt @@ -0,0 +1,7 @@ +add_library(crimson-os + cyan_store.cc + cyan_collection.cc + cyan_object.cc + Transaction.cc) +target_link_libraries(crimson-os + crimson) diff --git a/src/crimson/os/Transaction.cc b/src/crimson/os/Transaction.cc new file mode 100644 index 00000000..acf99c59 --- /dev/null +++ b/src/crimson/os/Transaction.cc @@ -0,0 +1,507 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#include "Transaction.h" +#include "include/denc.h" + +namespace ceph::os +{ + +void Transaction::iterator::decode_attrset_bl(bufferlist *pbl) +{ + using ceph::decode; + auto start = data_bl_p; + __u32 n; + decode(n, data_bl_p); + unsigned len = 4; + while (n--) { + __u32 l; + decode(l, data_bl_p); + data_bl_p.advance(l); + len += 4 + l; + decode(l, data_bl_p); + data_bl_p.advance(l); + len += 4 + l; + } + start.copy(len, *pbl); +} + +void Transaction::iterator::decode_keyset_bl(bufferlist *pbl) +{ + using ceph::decode; + auto start = data_bl_p; + __u32 n; + decode(n, data_bl_p); + unsigned len = 4; + while (n--) { + __u32 l; + decode(l, data_bl_p); + data_bl_p.advance(l); + len += 4 + l; + } + start.copy(len, *pbl); +} + +void Transaction::dump(ceph::Formatter *f) +{ + f->open_array_section("ops"); + iterator i = begin(); + int op_num = 0; + bool stop_looping = false; + while (i.have_op() && !stop_looping) { + Transaction::Op *op = i.decode_op(); + f->open_object_section("op"); + f->dump_int("op_num", op_num); + + switch (op->op) { + case Transaction::OP_NOP: + f->dump_string("op_name", "nop"); + break; + case Transaction::OP_TOUCH: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + f->dump_string("op_name", "touch"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + } + break; + + case Transaction::OP_WRITE: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + uint64_t off = op->off; + uint64_t len = op->len; + bufferlist bl; + i.decode_bl(bl); + f->dump_string("op_name", "write"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->dump_unsigned("length", len); + f->dump_unsigned("offset", off); + f->dump_unsigned("bufferlist length", bl.length()); + } + break; + + case Transaction::OP_ZERO: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + uint64_t off = op->off; + uint64_t len = op->len; + f->dump_string("op_name", "zero"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->dump_unsigned("offset", off); + f->dump_unsigned("length", len); + } + break; + + case Transaction::OP_TRIMCACHE: + { + // deprecated, no-op + f->dump_string("op_name", "trim_cache"); + } + break; + + case Transaction::OP_TRUNCATE: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + uint64_t off = op->off; + f->dump_string("op_name", "truncate"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->dump_unsigned("offset", off); + } + break; + + case Transaction::OP_REMOVE: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + f->dump_string("op_name", "remove"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + } + break; + + case Transaction::OP_SETATTR: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + string name = i.decode_string(); + bufferlist bl; + i.decode_bl(bl); + f->dump_string("op_name", "setattr"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->dump_string("name", name); + f->dump_unsigned("length", bl.length()); + } + break; + + case Transaction::OP_SETATTRS: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + map aset; + i.decode_attrset(aset); + f->dump_string("op_name", "setattrs"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->open_object_section("attr_lens"); + for (map::iterator p = aset.begin(); + p != aset.end(); ++p) { + f->dump_unsigned(p->first.c_str(), p->second.length()); + } + f->close_section(); + } + break; + + case Transaction::OP_RMATTR: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + string name = i.decode_string(); + f->dump_string("op_name", "rmattr"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->dump_string("name", name); + } + break; + + case Transaction::OP_RMATTRS: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + f->dump_string("op_name", "rmattrs"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + } + break; + + case Transaction::OP_CLONE: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + ghobject_t noid = i.get_oid(op->dest_oid); + f->dump_string("op_name", "clone"); + f->dump_stream("collection") << cid; + f->dump_stream("src_oid") << oid; + f->dump_stream("dst_oid") << noid; + } + break; + + case Transaction::OP_CLONERANGE: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + ghobject_t noid = i.get_oid(op->dest_oid); + uint64_t off = op->off; + uint64_t len = op->len; + f->dump_string("op_name", "clonerange"); + f->dump_stream("collection") << cid; + f->dump_stream("src_oid") << oid; + f->dump_stream("dst_oid") << noid; + f->dump_unsigned("offset", off); + f->dump_unsigned("len", len); + } + break; + + case Transaction::OP_CLONERANGE2: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + ghobject_t noid = i.get_oid(op->dest_oid); + uint64_t srcoff = op->off; + uint64_t len = op->len; + uint64_t dstoff = op->dest_off; + f->dump_string("op_name", "clonerange2"); + f->dump_stream("collection") << cid; + f->dump_stream("src_oid") << oid; + f->dump_stream("dst_oid") << noid; + f->dump_unsigned("src_offset", srcoff); + f->dump_unsigned("len", len); + f->dump_unsigned("dst_offset", dstoff); + } + break; + + case Transaction::OP_MKCOLL: + { + coll_t cid = i.get_cid(op->cid); + f->dump_string("op_name", "mkcoll"); + f->dump_stream("collection") << cid; + } + break; + + case Transaction::OP_COLL_HINT: + { + using ceph::decode; + coll_t cid = i.get_cid(op->cid); + uint32_t type = op->hint_type; + f->dump_string("op_name", "coll_hint"); + f->dump_stream("collection") << cid; + f->dump_unsigned("type", type); + bufferlist hint; + i.decode_bl(hint); + auto hiter = hint.cbegin(); + if (type == Transaction::COLL_HINT_EXPECTED_NUM_OBJECTS) { + uint32_t pg_num; + uint64_t num_objs; + decode(pg_num, hiter); + decode(num_objs, hiter); + f->dump_unsigned("pg_num", pg_num); + f->dump_unsigned("expected_num_objects", num_objs); + } + } + break; + + case Transaction::OP_COLL_SET_BITS: + { + coll_t cid = i.get_cid(op->cid); + f->dump_string("op_name", "coll_set_bits"); + f->dump_stream("collection") << cid; + f->dump_unsigned("bits", op->split_bits); + } + break; + + case Transaction::OP_RMCOLL: + { + coll_t cid = i.get_cid(op->cid); + f->dump_string("op_name", "rmcoll"); + f->dump_stream("collection") << cid; + } + break; + + case Transaction::OP_COLL_ADD: + { + coll_t ocid = i.get_cid(op->cid); + coll_t ncid = i.get_cid(op->dest_cid); + ghobject_t oid = i.get_oid(op->oid); + f->dump_string("op_name", "collection_add"); + f->dump_stream("src_collection") << ocid; + f->dump_stream("dst_collection") << ncid; + f->dump_stream("oid") << oid; + } + break; + + case Transaction::OP_COLL_REMOVE: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + f->dump_string("op_name", "collection_remove"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + } + break; + + case Transaction::OP_COLL_MOVE: + { + coll_t ocid = i.get_cid(op->cid); + coll_t ncid = i.get_cid(op->dest_cid); + ghobject_t oid = i.get_oid(op->oid); + f->open_object_section("collection_move"); + f->dump_stream("src_collection") << ocid; + f->dump_stream("dst_collection") << ncid; + f->dump_stream("oid") << oid; + f->close_section(); + } + break; + + case Transaction::OP_COLL_SETATTR: + { + coll_t cid = i.get_cid(op->cid); + string name = i.decode_string(); + bufferlist bl; + i.decode_bl(bl); + f->dump_string("op_name", "collection_setattr"); + f->dump_stream("collection") << cid; + f->dump_string("name", name); + f->dump_unsigned("length", bl.length()); + } + break; + + case Transaction::OP_COLL_RMATTR: + { + coll_t cid = i.get_cid(op->cid); + string name = i.decode_string(); + f->dump_string("op_name", "collection_rmattr"); + f->dump_stream("collection") << cid; + f->dump_string("name", name); + } + break; + + case Transaction::OP_COLL_RENAME: + { + f->dump_string("op_name", "collection_rename"); + } + break; + + case Transaction::OP_OMAP_CLEAR: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + f->dump_string("op_name", "omap_clear"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + } + break; + + case Transaction::OP_OMAP_SETKEYS: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + map aset; + i.decode_attrset(aset); + f->dump_string("op_name", "omap_setkeys"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->open_object_section("attr_lens"); + for (map::iterator p = aset.begin(); + p != aset.end(); ++p) { + f->dump_unsigned(p->first.c_str(), p->second.length()); + } + f->close_section(); + } + break; + + case Transaction::OP_OMAP_RMKEYS: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + set keys; + i.decode_keyset(keys); + f->dump_string("op_name", "omap_rmkeys"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->open_array_section("attrs"); + for (auto& k : keys) { + f->dump_string("", k.c_str()); + } + f->close_section(); + } + break; + + case Transaction::OP_OMAP_SETHEADER: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + bufferlist bl; + i.decode_bl(bl); + f->dump_string("op_name", "omap_setheader"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->dump_stream("header_length") << bl.length(); + } + break; + + case Transaction::OP_SPLIT_COLLECTION: + { + coll_t cid = i.get_cid(op->cid); + uint32_t bits = op->split_bits; + uint32_t rem = op->split_rem; + coll_t dest = i.get_cid(op->dest_cid); + f->dump_string("op_name", "op_split_collection_create"); + f->dump_stream("collection") << cid; + f->dump_stream("bits") << bits; + f->dump_stream("rem") << rem; + f->dump_stream("dest") << dest; + } + break; + + case Transaction::OP_SPLIT_COLLECTION2: + { + coll_t cid = i.get_cid(op->cid); + uint32_t bits = op->split_bits; + uint32_t rem = op->split_rem; + coll_t dest = i.get_cid(op->dest_cid); + f->dump_string("op_name", "op_split_collection"); + f->dump_stream("collection") << cid; + f->dump_stream("bits") << bits; + f->dump_stream("rem") << rem; + f->dump_stream("dest") << dest; + } + break; + + case Transaction::OP_MERGE_COLLECTION: + { + coll_t cid = i.get_cid(op->cid); + uint32_t bits = op->split_bits; + coll_t dest = i.get_cid(op->dest_cid); + f->dump_string("op_name", "op_merge_collection"); + f->dump_stream("collection") << cid; + f->dump_stream("dest") << dest; + f->dump_stream("bits") << bits; + } + break; + + case Transaction::OP_OMAP_RMKEYRANGE: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + string first, last; + first = i.decode_string(); + last = i.decode_string(); + f->dump_string("op_name", "op_omap_rmkeyrange"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->dump_string("first", first); + f->dump_string("last", last); + } + break; + + case Transaction::OP_COLL_MOVE_RENAME: + { + coll_t old_cid = i.get_cid(op->cid); + ghobject_t old_oid = i.get_oid(op->oid); + coll_t new_cid = i.get_cid(op->dest_cid); + ghobject_t new_oid = i.get_oid(op->dest_oid); + f->dump_string("op_name", "op_coll_move_rename"); + f->dump_stream("old_collection") << old_cid; + f->dump_stream("old_oid") << old_oid; + f->dump_stream("new_collection") << new_cid; + f->dump_stream("new_oid") << new_oid; + } + break; + + case Transaction::OP_TRY_RENAME: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t old_oid = i.get_oid(op->oid); + ghobject_t new_oid = i.get_oid(op->dest_oid); + f->dump_string("op_name", "op_coll_move_rename"); + f->dump_stream("collection") << cid; + f->dump_stream("old_oid") << old_oid; + f->dump_stream("new_oid") << new_oid; + } + break; + + case Transaction::OP_SETALLOCHINT: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + uint64_t expected_object_size = op->expected_object_size; + uint64_t expected_write_size = op->expected_write_size; + f->dump_string("op_name", "op_setallochint"); + f->dump_stream("collection") << cid; + f->dump_stream("oid") << oid; + f->dump_stream("expected_object_size") << expected_object_size; + f->dump_stream("expected_write_size") << expected_write_size; + } + break; + + default: + f->dump_string("op_name", "unknown"); + f->dump_unsigned("op_code", op->op); + stop_looping = true; + break; + } + f->close_section(); + op_num++; + } + f->close_section(); +} + +} diff --git a/src/crimson/os/Transaction.h b/src/crimson/os/Transaction.h new file mode 100644 index 00000000..c6f660fe --- /dev/null +++ b/src/crimson/os/Transaction.h @@ -0,0 +1,1234 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#include + +#include "include/int_types.h" +#include "include/buffer.h" +#include "osd/osd_types.h" + +/********************************* + * transaction + * + * A Transaction represents a sequence of primitive mutation + * operations. + * + * Three events in the life of a Transaction result in + * callbacks. Any Transaction can contain any number of callback + * objects (Context) for any combination of the three classes of + * callbacks: + * + * on_applied_sync, on_applied, and on_commit. + * + * The "on_applied" and "on_applied_sync" callbacks are invoked when + * the modifications requested by the Transaction are visible to + * subsequent ObjectStore operations, i.e., the results are + * readable. The only conceptual difference between on_applied and + * on_applied_sync is the specific thread and locking environment in + * which the callbacks operate. "on_applied_sync" is called + * directly by an ObjectStore execution thread. It is expected to + * execute quickly and must not acquire any locks of the calling + * environment. Conversely, "on_applied" is called from the separate + * Finisher thread, meaning that it can contend for calling + * environment locks. NB, on_applied and on_applied_sync are + * sometimes called on_readable and on_readable_sync. + * + * The "on_commit" callback is also called from the Finisher thread + * and indicates that all of the mutations have been durably + * committed to stable storage (i.e., are now software/hardware + * crashproof). + * + * At the implementation level, each mutation primitive (and its + * associated data) can be serialized to a single buffer. That + * serialization, however, does not copy any data, but (using the + * bufferlist library) will reference the original buffers. This + * implies that the buffer that contains the data being submitted + * must remain stable until the on_commit callback completes. In + * practice, bufferlist handles all of this for you and this + * subtlety is only relevant if you are referencing an existing + * buffer via buffer::raw_static. + * + * Some implementations of ObjectStore choose to implement their own + * form of journaling that uses the serialized form of a + * Transaction. This requires that the encode/decode logic properly + * version itself and handle version upgrades that might change the + * format of the encoded Transaction. This has already happened a + * couple of times and the Transaction object contains some helper + * variables that aid in this legacy decoding: + * + * sobject_encoding detects an older/simpler version of oid + * present in pre-bobtail versions of ceph. use_pool_override + * also detects a situation where the pool of an oid can be + * overridden for legacy operations/buffers. For non-legacy + * implementations of ObjectStore, neither of these fields are + * relevant. + * + * + * TRANSACTION ISOLATION + * + * Except as noted above, isolation is the responsibility of the + * caller. In other words, if any storage element (storage element + * == any of the four portions of an object as described above) is + * altered by a transaction (including deletion), the caller + * promises not to attempt to read that element while the + * transaction is pending (here pending means from the time of + * issuance until the "on_applied_sync" callback has been + * received). Violations of isolation need not be detected by + * ObjectStore and there is no corresponding error mechanism for + * reporting an isolation violation (crashing would be the + * appropriate way to report an isolation violation if detected). + * + * Enumeration operations may violate transaction isolation as + * described above when a storage element is being created or + * deleted as part of a transaction. In this case, ObjectStore is + * allowed to consider the enumeration operation to either precede + * or follow the violating transaction element. In other words, the + * presence/absence of the mutated element in the enumeration is + * entirely at the discretion of ObjectStore. The arbitrary ordering + * applies independently to each transaction element. For example, + * if a transaction contains two mutating elements "create A" and + * "delete B". And an enumeration operation is performed while this + * transaction is pending. It is permissible for ObjectStore to + * report any of the four possible combinations of the existence of + * A and B. + * + */ +namespace ceph::os { +class Transaction { +public: + enum { + OP_NOP = 0, + OP_TOUCH = 9, // cid, oid + OP_WRITE = 10, // cid, oid, offset, len, bl + OP_ZERO = 11, // cid, oid, offset, len + OP_TRUNCATE = 12, // cid, oid, len + OP_REMOVE = 13, // cid, oid + OP_SETATTR = 14, // cid, oid, attrname, bl + OP_SETATTRS = 15, // cid, oid, attrset + OP_RMATTR = 16, // cid, oid, attrname + OP_CLONE = 17, // cid, oid, newoid + OP_CLONERANGE = 18, // cid, oid, newoid, offset, len + OP_CLONERANGE2 = 30, // cid, oid, newoid, srcoff, len, dstoff + + OP_TRIMCACHE = 19, // cid, oid, offset, len **DEPRECATED** + + OP_MKCOLL = 20, // cid + OP_RMCOLL = 21, // cid + OP_COLL_ADD = 22, // cid, oldcid, oid + OP_COLL_REMOVE = 23, // cid, oid + OP_COLL_SETATTR = 24, // cid, attrname, bl + OP_COLL_RMATTR = 25, // cid, attrname + OP_COLL_SETATTRS = 26, // cid, attrset + OP_COLL_MOVE = 8, // newcid, oldcid, oid + + OP_RMATTRS = 28, // cid, oid + OP_COLL_RENAME = 29, // cid, newcid + + OP_OMAP_CLEAR = 31, // cid + OP_OMAP_SETKEYS = 32, // cid, attrset + OP_OMAP_RMKEYS = 33, // cid, keyset + OP_OMAP_SETHEADER = 34, // cid, header + OP_SPLIT_COLLECTION = 35, // cid, bits, destination + OP_SPLIT_COLLECTION2 = 36, /* cid, bits, destination + doesn't create the destination */ + OP_OMAP_RMKEYRANGE = 37, // cid, oid, firstkey, lastkey + OP_COLL_MOVE_RENAME = 38, // oldcid, oldoid, newcid, newoid + OP_SETALLOCHINT = 39, // cid, oid, object_size, write_size + OP_COLL_HINT = 40, // cid, type, bl + + OP_TRY_RENAME = 41, // oldcid, oldoid, newoid + + OP_COLL_SET_BITS = 42, // cid, bits + + OP_MERGE_COLLECTION = 43, // cid, destination + }; + + // Transaction hint type + enum { + COLL_HINT_EXPECTED_NUM_OBJECTS = 1, + }; + + struct Op { + ceph_le32 op; + ceph_le32 cid; + ceph_le32 oid; + ceph_le64 off; + ceph_le64 len; + ceph_le32 dest_cid; + ceph_le32 dest_oid; //OP_CLONE, OP_CLONERANGE + ceph_le64 dest_off; //OP_CLONERANGE + union { + struct { + ceph_le32 hint_type; //OP_COLL_HINT + }; + struct { + ceph_le32 alloc_hint_flags; //OP_SETALLOCHINT + }; + }; + ceph_le64 expected_object_size; //OP_SETALLOCHINT + ceph_le64 expected_write_size; //OP_SETALLOCHINT + ceph_le32 split_bits; //OP_SPLIT_COLLECTION2,OP_COLL_SET_BITS, + //OP_MKCOLL + ceph_le32 split_rem; //OP_SPLIT_COLLECTION2 + } __attribute__ ((packed)) ; + + struct TransactionData { + ceph_le64 ops; + ceph_le32 largest_data_len; + ceph_le32 largest_data_off; + ceph_le32 largest_data_off_in_data_bl; + ceph_le32 fadvise_flags; + + TransactionData() noexcept : + ops(init_le64(0)), + largest_data_len(init_le32(0)), + largest_data_off(init_le32(0)), + largest_data_off_in_data_bl(init_le32(0)), + fadvise_flags(init_le32(0)) { } + + // override default move operations to reset default values + TransactionData(TransactionData&& other) noexcept : + ops(other.ops), + largest_data_len(other.largest_data_len), + largest_data_off(other.largest_data_off), + largest_data_off_in_data_bl(other.largest_data_off_in_data_bl), + fadvise_flags(other.fadvise_flags) { + other.ops = 0; + other.largest_data_len = 0; + other.largest_data_off = 0; + other.largest_data_off_in_data_bl = 0; + other.fadvise_flags = 0; + } + TransactionData& operator=(TransactionData&& other) noexcept { + ops = other.ops; + largest_data_len = other.largest_data_len; + largest_data_off = other.largest_data_off; + largest_data_off_in_data_bl = other.largest_data_off_in_data_bl; + fadvise_flags = other.fadvise_flags; + other.ops = 0; + other.largest_data_len = 0; + other.largest_data_off = 0; + other.largest_data_off_in_data_bl = 0; + other.fadvise_flags = 0; + return *this; + } + + TransactionData(const TransactionData& other) = default; + TransactionData& operator=(const TransactionData& other) = default; + + void encode(bufferlist& bl) const { + bl.append((char*)this, sizeof(TransactionData)); + } + void decode(bufferlist::const_iterator &bl) { + bl.copy(sizeof(TransactionData), (char*)this); + } + } __attribute__ ((packed)) ; + +private: + TransactionData data; + + std::map coll_index; + std::map object_index; + + __le32 coll_id {0}; + __le32 object_id {0}; + + bufferlist data_bl; + bufferlist op_bl; + + std::list on_applied; + std::list on_commit; + std::list on_applied_sync; + +public: + Transaction() = default; + + explicit Transaction(bufferlist::const_iterator &dp) { + decode(dp); + } + explicit Transaction(bufferlist &nbl) { + auto dp = nbl.cbegin(); + decode(dp); + } + + // override default move operations to reset default values + Transaction(Transaction&& other) noexcept : + data(std::move(other.data)), + coll_index(std::move(other.coll_index)), + object_index(std::move(other.object_index)), + coll_id(other.coll_id), + object_id(other.object_id), + data_bl(std::move(other.data_bl)), + op_bl(std::move(other.op_bl)), + on_applied(std::move(other.on_applied)), + on_commit(std::move(other.on_commit)), + on_applied_sync(std::move(other.on_applied_sync)) { + other.coll_id = 0; + other.object_id = 0; + } + + Transaction& operator=(Transaction&& other) noexcept { + data = std::move(other.data); + coll_index = std::move(other.coll_index); + object_index = std::move(other.object_index); + coll_id = other.coll_id; + object_id = other.object_id; + data_bl = std::move(other.data_bl); + op_bl = std::move(other.op_bl); + on_applied = std::move(other.on_applied); + on_commit = std::move(other.on_commit); + on_applied_sync = std::move(other.on_applied_sync); + other.coll_id = 0; + other.object_id = 0; + return *this; + } + + Transaction(const Transaction& other) = default; + Transaction& operator=(const Transaction& other) = default; + + // expose object_index for FileStore::Op's benefit + const map& get_object_index() const { + return object_index; + } + + /* Operations on callback contexts */ + void register_on_applied(Context *c) { + if (!c) return; + on_applied.push_back(c); + } + void register_on_commit(Context *c) { + if (!c) return; + on_commit.push_back(c); + } + void register_on_applied_sync(Context *c) { + if (!c) return; + on_applied_sync.push_back(c); + } + void register_on_complete(Context *c) { + if (!c) return; + RunOnDeleteRef _complete (std::make_shared(c)); + register_on_applied(new ContainerContext(_complete)); + register_on_commit(new ContainerContext(_complete)); + } + bool has_contexts() const { + return + !on_commit.empty() || + !on_applied.empty() || + !on_applied_sync.empty(); + } + + static void collect_contexts(vector& t, + Context **out_on_applied, + Context **out_on_commit, + Context **out_on_applied_sync) { + ceph_assert(out_on_applied); + ceph_assert(out_on_commit); + ceph_assert(out_on_applied_sync); + std::list on_applied, on_commit, on_applied_sync; + for (auto& i : t) { + on_applied.splice(on_applied.end(), i.on_applied); + on_commit.splice(on_commit.end(), i.on_commit); + on_applied_sync.splice(on_applied_sync.end(), i.on_applied_sync); + } + *out_on_applied = C_Contexts::list_to_context(on_applied); + *out_on_commit = C_Contexts::list_to_context(on_commit); + *out_on_applied_sync = C_Contexts::list_to_context(on_applied_sync); + } + static void collect_contexts(vector& t, + std::list *out_on_applied, + std::list *out_on_commit, + std::list *out_on_applied_sync) { + ceph_assert(out_on_applied); + ceph_assert(out_on_commit); + ceph_assert(out_on_applied_sync); + for (auto& i : t) { + out_on_applied->splice(out_on_applied->end(), i.on_applied); + out_on_commit->splice(out_on_commit->end(), i.on_commit); + out_on_applied_sync->splice(out_on_applied_sync->end(), + i.on_applied_sync); + } + } + + Context *get_on_applied() { + return C_Contexts::list_to_context(on_applied); + } + Context *get_on_commit() { + return C_Contexts::list_to_context(on_commit); + } + Context *get_on_applied_sync() { + return C_Contexts::list_to_context(on_applied_sync); + } + + void set_fadvise_flags(uint32_t flags) { + data.fadvise_flags = flags; + } + void set_fadvise_flag(uint32_t flag) { + data.fadvise_flags = data.fadvise_flags | flag; + } + uint32_t get_fadvise_flags() { return data.fadvise_flags; } + + void swap(Transaction& other) noexcept { + std::swap(data, other.data); + std::swap(on_applied, other.on_applied); + std::swap(on_commit, other.on_commit); + std::swap(on_applied_sync, other.on_applied_sync); + + std::swap(coll_index, other.coll_index); + std::swap(object_index, other.object_index); + std::swap(coll_id, other.coll_id); + std::swap(object_id, other.object_id); + op_bl.swap(other.op_bl); + data_bl.swap(other.data_bl); + } + + void _update_op(Op* op, + vector<__le32> &cm, + vector<__le32> &om) { + + switch (op->op) { + case OP_NOP: + break; + + case OP_TOUCH: + case OP_REMOVE: + case OP_SETATTR: + case OP_SETATTRS: + case OP_RMATTR: + case OP_RMATTRS: + case OP_COLL_REMOVE: + case OP_OMAP_CLEAR: + case OP_OMAP_SETKEYS: + case OP_OMAP_RMKEYS: + case OP_OMAP_RMKEYRANGE: + case OP_OMAP_SETHEADER: + case OP_WRITE: + case OP_ZERO: + case OP_TRUNCATE: + case OP_SETALLOCHINT: + ceph_assert(op->cid < cm.size()); + ceph_assert(op->oid < om.size()); + op->cid = cm[op->cid]; + op->oid = om[op->oid]; + break; + + case OP_CLONERANGE2: + case OP_CLONE: + ceph_assert(op->cid < cm.size()); + ceph_assert(op->oid < om.size()); + ceph_assert(op->dest_oid < om.size()); + op->cid = cm[op->cid]; + op->oid = om[op->oid]; + op->dest_oid = om[op->dest_oid]; + break; + + case OP_MKCOLL: + case OP_RMCOLL: + case OP_COLL_SETATTR: + case OP_COLL_RMATTR: + case OP_COLL_SETATTRS: + case OP_COLL_HINT: + case OP_COLL_SET_BITS: + ceph_assert(op->cid < cm.size()); + op->cid = cm[op->cid]; + break; + + case OP_COLL_ADD: + ceph_assert(op->cid < cm.size()); + ceph_assert(op->oid < om.size()); + ceph_assert(op->dest_cid < om.size()); + op->cid = cm[op->cid]; + op->dest_cid = cm[op->dest_cid]; + op->oid = om[op->oid]; + break; + + case OP_COLL_MOVE_RENAME: + ceph_assert(op->cid < cm.size()); + ceph_assert(op->oid < om.size()); + ceph_assert(op->dest_cid < cm.size()); + ceph_assert(op->dest_oid < om.size()); + op->cid = cm[op->cid]; + op->oid = om[op->oid]; + op->dest_cid = cm[op->dest_cid]; + op->dest_oid = om[op->dest_oid]; + break; + + case OP_TRY_RENAME: + ceph_assert(op->cid < cm.size()); + ceph_assert(op->oid < om.size()); + ceph_assert(op->dest_oid < om.size()); + op->cid = cm[op->cid]; + op->oid = om[op->oid]; + op->dest_oid = om[op->dest_oid]; + break; + + case OP_SPLIT_COLLECTION2: + ceph_assert(op->cid < cm.size()); + ceph_assert(op->dest_cid < cm.size()); + op->cid = cm[op->cid]; + op->dest_cid = cm[op->dest_cid]; + break; + + case OP_MERGE_COLLECTION: + ceph_assert(op->cid < cm.size()); + ceph_assert(op->dest_cid < cm.size()); + op->cid = cm[op->cid]; + op->dest_cid = cm[op->dest_cid]; + break; + + default: + ceph_abort_msg("Unknown OP"); + } + } + void _update_op_bl( + bufferlist& bl, + vector<__le32> &cm, + vector<__le32> &om) { + for (auto& bp : bl.buffers()) { + ceph_assert(bp.length() % sizeof(Op) == 0); + + char* raw_p = const_cast(bp.c_str()); + char* raw_end = raw_p + bp.length(); + while (raw_p < raw_end) { + _update_op(reinterpret_cast(raw_p), cm, om); + raw_p += sizeof(Op); + } + } + } + /// Append the operations of the parameter to this Transaction. Those + /// operations are removed from the parameter Transaction + void append(Transaction& other) { + + data.ops = data.ops + other.data.ops; + if (other.data.largest_data_len > data.largest_data_len) { + data.largest_data_len = other.data.largest_data_len; + data.largest_data_off = other.data.largest_data_off; + data.largest_data_off_in_data_bl = data_bl.length() + other.data.largest_data_off_in_data_bl; + } + data.fadvise_flags = data.fadvise_flags | other.data.fadvise_flags; + on_applied.splice(on_applied.end(), other.on_applied); + on_commit.splice(on_commit.end(), other.on_commit); + on_applied_sync.splice(on_applied_sync.end(), other.on_applied_sync); + + //append coll_index & object_index + vector<__le32> cm(other.coll_index.size()); + map::iterator coll_index_p; + for (coll_index_p = other.coll_index.begin(); + coll_index_p != other.coll_index.end(); + ++coll_index_p) { + cm[coll_index_p->second] = _get_coll_id(coll_index_p->first); + } + + vector<__le32> om(other.object_index.size()); + map::iterator object_index_p; + for (object_index_p = other.object_index.begin(); + object_index_p != other.object_index.end(); + ++object_index_p) { + om[object_index_p->second] = _get_object_id(object_index_p->first); + } + + //the other.op_bl SHOULD NOT be changes during append operation, + //we use additional bufferlist to avoid this problem + bufferlist other_op_bl; + { + bufferptr other_op_bl_ptr(other.op_bl.length()); + other.op_bl.copy(0, other.op_bl.length(), other_op_bl_ptr.c_str()); + other_op_bl.append(std::move(other_op_bl_ptr)); + } + + //update other_op_bl with cm & om + //When the other is appended to current transaction, all coll_index and + //object_index in other.op_buffer should be updated by new index of the + //combined transaction + _update_op_bl(other_op_bl, cm, om); + + //append op_bl + op_bl.append(other_op_bl); + //append data_bl + data_bl.append(other.data_bl); + } + + /** Inquires about the Transaction as a whole. */ + + /// How big is the encoded Transaction buffer? + uint64_t get_encoded_bytes() { + //layout: data_bl + op_bl + coll_index + object_index + data + + // coll_index size, object_index size and sizeof(transaction_data) + // all here, so they may be computed at compile-time + size_t final_size = sizeof(__u32) * 2 + sizeof(data); + + // coll_index second and object_index second + final_size += (coll_index.size() + object_index.size()) * sizeof(__le32); + + // coll_index first + for (auto p = coll_index.begin(); p != coll_index.end(); ++p) { + final_size += p->first.encoded_size(); + } + + // object_index first + for (auto p = object_index.begin(); p != object_index.end(); ++p) { + final_size += p->first.encoded_size(); + } + + return data_bl.length() + + op_bl.length() + + final_size; + } + + /// Retain old version for regression testing purposes + uint64_t get_encoded_bytes_test() { + using ceph::encode; + //layout: data_bl + op_bl + coll_index + object_index + data + bufferlist bl; + encode(coll_index, bl); + encode(object_index, bl); + + return data_bl.length() + + op_bl.length() + + bl.length() + + sizeof(data); + } + + uint64_t get_num_bytes() { + return get_encoded_bytes(); + } + /// Size of largest data buffer to the "write" operation encountered so far + uint32_t get_data_length() { + return data.largest_data_len; + } + /// offset within the encoded buffer to the start of the largest data buffer + /// that's encoded + uint32_t get_data_offset() { + if (data.largest_data_off_in_data_bl) { + return data.largest_data_off_in_data_bl + + sizeof(__u8) + // encode struct_v + sizeof(__u8) + // encode compat_v + sizeof(__u32) + // encode len + sizeof(__u32); // data_bl len + } + return 0; // none + } + /// offset of buffer as aligned to destination within object. + int get_data_alignment() { + if (!data.largest_data_len) + return 0; + return (0 - get_data_offset()) & ~CEPH_PAGE_MASK; + } + /// Is the Transaction empty (no operations) + bool empty() { + return !data.ops; + } + /// Number of operations in the transaction + int get_num_ops() { + return data.ops; + } + + /** + * iterator + * + * Helper object to parse Transactions. + * + * ObjectStore instances use this object to step down the encoded + * buffer decoding operation codes and parameters as we go. + * + */ + class iterator { + Transaction *t; + + uint64_t ops; + char* op_buffer_p; + + bufferlist::const_iterator data_bl_p; + + public: + vector colls; + vector objects; + + private: + explicit iterator(Transaction *t) + : t(t), + data_bl_p(t->data_bl.cbegin()), + colls(t->coll_index.size()), + objects(t->object_index.size()) { + + ops = t->data.ops; + op_buffer_p = t->op_bl.c_str(); + + map::iterator coll_index_p; + for (coll_index_p = t->coll_index.begin(); + coll_index_p != t->coll_index.end(); + ++coll_index_p) { + colls[coll_index_p->second] = coll_index_p->first; + } + + map::iterator object_index_p; + for (object_index_p = t->object_index.begin(); + object_index_p != t->object_index.end(); + ++object_index_p) { + objects[object_index_p->second] = object_index_p->first; + } + } + + friend class Transaction; + + public: + + bool have_op() { + return ops > 0; + } + Op* decode_op() { + ceph_assert(ops > 0); + + Op* op = reinterpret_cast(op_buffer_p); + op_buffer_p += sizeof(Op); + ops--; + + return op; + } + string decode_string() { + using ceph::decode; + string s; + decode(s, data_bl_p); + return s; + } + void decode_bp(bufferptr& bp) { + using ceph::decode; + decode(bp, data_bl_p); + } + void decode_bl(bufferlist& bl) { + using ceph::decode; + decode(bl, data_bl_p); + } + void decode_attrset(map& aset) { + using ceph::decode; + decode(aset, data_bl_p); + } + void decode_attrset(map& aset) { + using ceph::decode; + decode(aset, data_bl_p); + } + void decode_attrset_bl(bufferlist *pbl); + void decode_keyset(set &keys){ + using ceph::decode; + decode(keys, data_bl_p); + } + void decode_keyset_bl(bufferlist *pbl); + + const ghobject_t &get_oid(__le32 oid_id) { + ceph_assert(oid_id < objects.size()); + return objects[oid_id]; + } + const coll_t &get_cid(__le32 cid_id) { + ceph_assert(cid_id < colls.size()); + return colls[cid_id]; + } + uint32_t get_fadvise_flags() const { + return t->get_fadvise_flags(); + } + }; + + iterator begin() { + return iterator(this); + } + +private: + void _build_actions_from_tbl(); + + static constexpr size_t OPS_PER_PTR = 32u; + /** + * Helper functions to encode the various mutation elements of a + * transaction. These are 1:1 with the operation codes (see + * enumeration above). These routines ensure that the + * encoder/creator of a transaction gets the right data in the + * right place. Sadly, there's no corresponding version nor any + * form of seat belts for the decoder. + */ + Op* _get_next_op() { + if (op_bl.get_append_buffer_unused_tail_length() < sizeof(Op)) { + op_bl.reserve(sizeof(Op) * OPS_PER_PTR); + } + // append_hole ensures bptr merging. Even huge number of ops + // shouldn't result in overpopulating bl::_buffers. + char* const p = op_bl.append_hole(sizeof(Op)).c_str(); + memset(p, 0, sizeof(Op)); + return reinterpret_cast(p); + } + __le32 _get_coll_id(const coll_t& coll) { + map::iterator c = coll_index.find(coll); + if (c != coll_index.end()) + return c->second; + + __le32 index_id = coll_id++; + coll_index[coll] = index_id; + return index_id; + } + __le32 _get_object_id(const ghobject_t& oid) { + map::iterator o = object_index.find(oid); + if (o != object_index.end()) + return o->second; + + __le32 index_id = object_id++; + object_index[oid] = index_id; + return index_id; + } + +public: + /// noop. 'nuf said + void nop() { + Op* _op = _get_next_op(); + _op->op = OP_NOP; + data.ops = data.ops + 1; + } + /** + * touch + * + * Ensure the existance of an object in a collection. Create an + * empty object if necessary + */ + void touch(const coll_t& cid, const ghobject_t& oid) { + Op* _op = _get_next_op(); + _op->op = OP_TOUCH; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + data.ops = data.ops + 1; + } + /** + * Write data to an offset within an object. If the object is too + * small, it is expanded as needed. It is possible to specify an + * offset beyond the current end of an object and it will be + * expanded as needed. Simple implementations of ObjectStore will + * just zero the data between the old end of the object and the + * newly provided data. More sophisticated implementations of + * ObjectStore will omit the untouched data and store it as a + * "hole" in the file. + * + * Note that a 0-length write does not affect the size of the object. + */ + void write(const coll_t& cid, const ghobject_t& oid, uint64_t off, uint64_t len, + const bufferlist& write_data, uint32_t flags = 0) { + using ceph::encode; + uint32_t orig_len = data_bl.length(); + Op* _op = _get_next_op(); + _op->op = OP_WRITE; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + _op->off = off; + _op->len = len; + encode(write_data, data_bl); + + ceph_assert(len == write_data.length()); + data.fadvise_flags = data.fadvise_flags | flags; + if (write_data.length() > data.largest_data_len) { + data.largest_data_len = write_data.length(); + data.largest_data_off = off; + // we are about to + data.largest_data_off_in_data_bl = orig_len + sizeof(__u32); + } + data.ops = data.ops + 1; + } + /** + * zero out the indicated byte range within an object. Some + * ObjectStore instances may optimize this to release the + * underlying storage space. + * + * If the zero range extends beyond the end of the object, the object + * size is extended, just as if we were writing a buffer full of zeros. + * EXCEPT if the length is 0, in which case (just like a 0-length write) + * we do not adjust the object size. + */ + void zero(const coll_t& cid, const ghobject_t& oid, uint64_t off, uint64_t len) { + Op* _op = _get_next_op(); + _op->op = OP_ZERO; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + _op->off = off; + _op->len = len; + data.ops = data.ops + 1; + } + /// Discard all data in the object beyond the specified size. + void truncate(const coll_t& cid, const ghobject_t& oid, uint64_t off) { + Op* _op = _get_next_op(); + _op->op = OP_TRUNCATE; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + _op->off = off; + data.ops = data.ops + 1; + } + /// Remove an object. All four parts of the object are removed. + void remove(const coll_t& cid, const ghobject_t& oid) { + Op* _op = _get_next_op(); + _op->op = OP_REMOVE; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + data.ops = data.ops + 1; + } + /// Set an xattr of an object + void setattr(const coll_t& cid, const ghobject_t& oid, + const char* name, + bufferlist& val) { + string n(name); + setattr(cid, oid, n, val); + } + /// Set an xattr of an object + void setattr(const coll_t& cid, const ghobject_t& oid, + const string& s, bufferlist& val) { + using ceph::encode; + Op* _op = _get_next_op(); + _op->op = OP_SETATTR; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + encode(s, data_bl); + encode(val, data_bl); + data.ops = data.ops + 1; + } + /// Set multiple xattrs of an object + void setattrs(const coll_t& cid, const ghobject_t& oid, + const map& attrset) { + using ceph::encode; + Op* _op = _get_next_op(); + _op->op = OP_SETATTRS; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + encode(attrset, data_bl); + data.ops = data.ops + 1; + } + /// Set multiple xattrs of an object + void setattrs(const coll_t& cid, const ghobject_t& oid, + const map& attrset) { + using ceph::encode; + Op* _op = _get_next_op(); + _op->op = OP_SETATTRS; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + encode(attrset, data_bl); + data.ops = data.ops + 1; + } + /// remove an xattr from an object + void rmattr(const coll_t& cid, const ghobject_t& oid, const char *name) { + string n(name); + rmattr(cid, oid, n); + } + /// remove an xattr from an object + void rmattr(const coll_t& cid, const ghobject_t& oid, const string& s) { + using ceph::encode; + Op* _op = _get_next_op(); + _op->op = OP_RMATTR; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + encode(s, data_bl); + data.ops = data.ops + 1; + } + /// remove all xattrs from an object + void rmattrs(const coll_t& cid, const ghobject_t& oid) { + Op* _op = _get_next_op(); + _op->op = OP_RMATTRS; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + data.ops = data.ops + 1; + } + /** + * Clone an object into another object. + * + * Low-cost (e.g., O(1)) cloning (if supported) is best, but + * fallback to an O(n) copy is allowed. All four parts of the + * object are cloned (data, xattrs, omap header, omap + * entries). + * + * The destination named object may already exist, in + * which case its previous contents are discarded. + */ + void clone(const coll_t& cid, const ghobject_t& oid, + const ghobject_t& noid) { + Op* _op = _get_next_op(); + _op->op = OP_CLONE; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + _op->dest_oid = _get_object_id(noid); + data.ops = data.ops + 1; + } + /** + * Clone a byte range from one object to another. + * + * The data portion of the destination object receives a copy of a + * portion of the data from the source object. None of the other + * three parts of an object is copied from the source. + * + * The destination object size may be extended to the dstoff + len. + * + * The source range *must* overlap with the source object data. If it does + * not the result is undefined. + */ + void clone_range(const coll_t& cid, const ghobject_t& oid, + const ghobject_t& noid, + uint64_t srcoff, uint64_t srclen, uint64_t dstoff) { + Op* _op = _get_next_op(); + _op->op = OP_CLONERANGE2; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + _op->dest_oid = _get_object_id(noid); + _op->off = srcoff; + _op->len = srclen; + _op->dest_off = dstoff; + data.ops = data.ops + 1; + } + + /// Create the collection + void create_collection(const coll_t& cid, int bits) { + Op* _op = _get_next_op(); + _op->op = OP_MKCOLL; + _op->cid = _get_coll_id(cid); + _op->split_bits = bits; + data.ops = data.ops + 1; + } + + /** + * Give the collection a hint. + * + * @param cid - collection id. + * @param type - hint type. + * @param hint - the hint payload, which contains the customized + * data along with the hint type. + */ + void collection_hint(const coll_t& cid, uint32_t type, const bufferlist& hint) { + using ceph::encode; + Op* _op = _get_next_op(); + _op->op = OP_COLL_HINT; + _op->cid = _get_coll_id(cid); + _op->hint_type = type; + encode(hint, data_bl); + data.ops = data.ops + 1; + } + + /// remove the collection, the collection must be empty + void remove_collection(const coll_t& cid) { + Op* _op = _get_next_op(); + _op->op = OP_RMCOLL; + _op->cid = _get_coll_id(cid); + data.ops = data.ops + 1; + } + void collection_move(const coll_t& cid, const coll_t &oldcid, + const ghobject_t& oid) + __attribute__ ((deprecated)) { + // NOTE: we encode this as a fixed combo of ADD + REMOVE. they + // always appear together, so this is effectively a single MOVE. + Op* _op = _get_next_op(); + _op->op = OP_COLL_ADD; + _op->cid = _get_coll_id(oldcid); + _op->oid = _get_object_id(oid); + _op->dest_cid = _get_coll_id(cid); + data.ops = data.ops + 1; + + _op = _get_next_op(); + _op->op = OP_COLL_REMOVE; + _op->cid = _get_coll_id(oldcid); + _op->oid = _get_object_id(oid); + data.ops = data.ops + 1; + } + void collection_move_rename(const coll_t& oldcid, const ghobject_t& oldoid, + const coll_t &cid, const ghobject_t& oid) { + Op* _op = _get_next_op(); + _op->op = OP_COLL_MOVE_RENAME; + _op->cid = _get_coll_id(oldcid); + _op->oid = _get_object_id(oldoid); + _op->dest_cid = _get_coll_id(cid); + _op->dest_oid = _get_object_id(oid); + data.ops = data.ops + 1; + } + void try_rename(const coll_t &cid, const ghobject_t& oldoid, + const ghobject_t& oid) { + Op* _op = _get_next_op(); + _op->op = OP_TRY_RENAME; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oldoid); + _op->dest_oid = _get_object_id(oid); + data.ops = data.ops + 1; + } + + /// Remove omap from oid + void omap_clear( + const coll_t &cid, ///< [in] Collection containing oid + const ghobject_t &oid ///< [in] Object from which to remove omap + ) { + Op* _op = _get_next_op(); + _op->op = OP_OMAP_CLEAR; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + data.ops = data.ops + 1; + } + /// Set keys on oid omap. Replaces duplicate keys. + void omap_setkeys( + const coll_t& cid, ///< [in] Collection containing oid + const ghobject_t &oid, ///< [in] Object to update + const map &attrset ///< [in] Replacement keys and values + ) { + using ceph::encode; + Op* _op = _get_next_op(); + _op->op = OP_OMAP_SETKEYS; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + encode(attrset, data_bl); + data.ops = data.ops + 1; + } + + /// Set keys on an oid omap (bufferlist variant). + void omap_setkeys( + const coll_t &cid, ///< [in] Collection containing oid + const ghobject_t &oid, ///< [in] Object to update + const bufferlist &attrset_bl ///< [in] Replacement keys and values + ) { + Op* _op = _get_next_op(); + _op->op = OP_OMAP_SETKEYS; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + data_bl.append(attrset_bl); + data.ops = data.ops + 1; + } + + /// Remove keys from oid omap + void omap_rmkeys( + const coll_t &cid, ///< [in] Collection containing oid + const ghobject_t &oid, ///< [in] Object from which to remove the omap + const set &keys ///< [in] Keys to clear + ) { + using ceph::encode; + Op* _op = _get_next_op(); + _op->op = OP_OMAP_RMKEYS; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + encode(keys, data_bl); + data.ops = data.ops + 1; + } + + /// Remove keys from oid omap + void omap_rmkeys( + const coll_t &cid, ///< [in] Collection containing oid + const ghobject_t &oid, ///< [in] Object from which to remove the omap + const bufferlist &keys_bl ///< [in] Keys to clear + ) { + Op* _op = _get_next_op(); + _op->op = OP_OMAP_RMKEYS; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + data_bl.append(keys_bl); + data.ops = data.ops + 1; + } + + /// Remove key range from oid omap + void omap_rmkeyrange( + const coll_t &cid, ///< [in] Collection containing oid + const ghobject_t &oid, ///< [in] Object from which to remove the omap keys + const string& first, ///< [in] first key in range + const string& last ///< [in] first key past range, range is [first,last) + ) { + using ceph::encode; + Op* _op = _get_next_op(); + _op->op = OP_OMAP_RMKEYRANGE; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + encode(first, data_bl); + encode(last, data_bl); + data.ops = data.ops + 1; + } + + /// Set omap header + void omap_setheader( + const coll_t &cid, ///< [in] Collection containing oid + const ghobject_t &oid, ///< [in] Object + const bufferlist &bl ///< [in] Header value + ) { + using ceph::encode; + Op* _op = _get_next_op(); + _op->op = OP_OMAP_SETHEADER; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + encode(bl, data_bl); + data.ops = data.ops + 1; + } + + /// Split collection based on given prefixes, objects matching the specified + /// bits/rem are moved to the new collection + void split_collection( + const coll_t &cid, + uint32_t bits, + uint32_t rem, + const coll_t &destination) { + Op* _op = _get_next_op(); + _op->op = OP_SPLIT_COLLECTION2; + _op->cid = _get_coll_id(cid); + _op->dest_cid = _get_coll_id(destination); + _op->split_bits = bits; + _op->split_rem = rem; + data.ops = data.ops + 1; + } + + /// Merge collection into another. + void merge_collection( + coll_t cid, + coll_t destination, + uint32_t bits) { + Op* _op = _get_next_op(); + _op->op = OP_MERGE_COLLECTION; + _op->cid = _get_coll_id(cid); + _op->dest_cid = _get_coll_id(destination); + _op->split_bits = bits; + data.ops = data.ops + 1; + } + + void collection_set_bits( + const coll_t &cid, + int bits) { + Op* _op = _get_next_op(); + _op->op = OP_COLL_SET_BITS; + _op->cid = _get_coll_id(cid); + _op->split_bits = bits; + data.ops = data.ops + 1; + } + + /// Set allocation hint for an object + /// make 0 values(expected_object_size, expected_write_size) noops for all implementations + void set_alloc_hint( + const coll_t &cid, + const ghobject_t &oid, + uint64_t expected_object_size, + uint64_t expected_write_size, + uint32_t flags + ) { + Op* _op = _get_next_op(); + _op->op = OP_SETALLOCHINT; + _op->cid = _get_coll_id(cid); + _op->oid = _get_object_id(oid); + _op->expected_object_size = expected_object_size; + _op->expected_write_size = expected_write_size; + _op->alloc_hint_flags = flags; + data.ops = data.ops + 1; + } + + void encode(bufferlist& bl) const { + //layout: data_bl + op_bl + coll_index + object_index + data + ENCODE_START(9, 9, bl); + encode(data_bl, bl); + encode(op_bl, bl); + encode(coll_index, bl); + encode(object_index, bl); + data.encode(bl); + ENCODE_FINISH(bl); + } + + void decode(bufferlist::const_iterator &bl) { + DECODE_START(9, bl); + DECODE_OLDEST(9); + + decode(data_bl, bl); + decode(op_bl, bl); + decode(coll_index, bl); + decode(object_index, bl); + data.decode(bl); + coll_id = coll_index.size(); + object_id = object_index.size(); + + DECODE_FINISH(bl); + } + + void dump(ceph::Formatter *f); +}; +} diff --git a/src/crimson/os/cyan_collection.cc b/src/crimson/os/cyan_collection.cc new file mode 100644 index 00000000..82403dbc --- /dev/null +++ b/src/crimson/os/cyan_collection.cc @@ -0,0 +1,76 @@ +#include "cyan_collection.h" + +#include "cyan_object.h" + +namespace ceph::os +{ + +Collection::Collection(const coll_t& c) + : cid{c} +{} + +Collection::~Collection() = default; + +Collection::ObjectRef Collection::create_object() const +{ + return new ceph::os::Object{}; +} + +Collection::ObjectRef Collection::get_object(ghobject_t oid) +{ + auto o = object_hash.find(oid); + if (o == object_hash.end()) + return ObjectRef(); + return o->second; +} + +Collection::ObjectRef Collection::get_or_create_object(ghobject_t oid) +{ + auto result = object_hash.emplace(oid, ObjectRef{}); + if (result.second) + object_map[oid] = result.first->second = create_object(); + return result.first->second; +} + +uint64_t Collection::used_bytes() const +{ + uint64_t result = 0; + for (auto& obj : object_map) { + result += obj.second->get_size(); + } + return result; +} + +void Collection::encode(bufferlist& bl) const +{ + ENCODE_START(1, 1, bl); + encode(xattr, bl); + encode(use_page_set, bl); + uint32_t s = object_map.size(); + encode(s, bl); + for (auto& [oid, obj] : object_map) { + encode(oid, bl); + obj->encode(bl); + } + ENCODE_FINISH(bl); +} + +void Collection::decode(bufferlist::const_iterator& p) +{ + DECODE_START(1, p); + decode(xattr, p); + decode(use_page_set, p); + uint32_t s; + decode(s, p); + while (s--) { + ghobject_t k; + decode(k, p); + auto o = create_object(); + o->decode(p); + object_map.insert(make_pair(k, o)); + object_hash.insert(make_pair(k, o)); + } + DECODE_FINISH(p); +} + +} diff --git a/src/crimson/os/cyan_collection.h b/src/crimson/os/cyan_collection.h new file mode 100644 index 00000000..78f1aa0a --- /dev/null +++ b/src/crimson/os/cyan_collection.h @@ -0,0 +1,55 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#include +#include +#include +#include + +#include "include/buffer.h" +#include "osd/osd_types.h" + +namespace ceph::os { + +class Object; +/** + * a collection also orders transactions + * + * Any transactions queued under a given collection will be applied in + * sequence. Transactions queued under different collections may run + * in parallel. + * + * ObjectStore users my get collection handles with open_collection() (or, + * for bootstrapping a new collection, create_new_collection()). + */ +struct Collection : public boost::intrusive_ref_counter< + Collection, + boost::thread_unsafe_counter> +{ + using ObjectRef = boost::intrusive_ptr; + const coll_t cid; + int bits = 0; + // always use bufferlist object for testing + bool use_page_set = false; + std::unordered_map object_hash; ///< for lookup + std::map object_map; ///< for iteration + std::map xattr; + bool exists = true; + + Collection(const coll_t& c); + ~Collection(); + + ObjectRef create_object() const; + ObjectRef get_object(ghobject_t oid); + ObjectRef get_or_create_object(ghobject_t oid); + uint64_t used_bytes() const; + + const coll_t &get_cid() const { + return cid; + } + + void encode(bufferlist& bl) const; + void decode(bufferlist::const_iterator& p); +}; + +} diff --git a/src/crimson/os/cyan_object.cc b/src/crimson/os/cyan_object.cc new file mode 100644 index 00000000..1612cebe --- /dev/null +++ b/src/crimson/os/cyan_object.cc @@ -0,0 +1,88 @@ +#include "cyan_object.h" +#include "include/encoding.h" + +namespace ceph::os { + +size_t Object::get_size() const { + return data.length(); +} + +int Object::read(uint64_t offset, uint64_t len, bufferlist &bl) +{ + bl.substr_of(data, offset, len); + return bl.length(); +} + +int Object::write(uint64_t offset, const bufferlist &src) +{ + unsigned len = src.length(); + // before + bufferlist newdata; + if (get_size() >= offset) { + newdata.substr_of(data, 0, offset); + } else { + if (get_size()) { + newdata.substr_of(data, 0, get_size()); + } + newdata.append_zero(offset - get_size()); + } + + newdata.append(src); + + // after + if (get_size() > offset + len) { + bufferlist tail; + tail.substr_of(data, offset + len, get_size() - (offset + len)); + newdata.append(tail); + } + + data.claim(newdata); + return 0; +} + +int Object::clone(Object *src, uint64_t srcoff, uint64_t len, + uint64_t dstoff) +{ + bufferlist bl; + if (srcoff == dstoff && len == src->get_size()) { + data = src->data; + return 0; + } + bl.substr_of(src->data, srcoff, len); + return write(dstoff, bl); + +} + +int Object::truncate(uint64_t size) +{ + if (get_size() > size) { + bufferlist bl; + bl.substr_of(data, 0, size); + data.claim(bl); + } else if (get_size() == size) { + // do nothing + } else { + data.append_zero(size - get_size()); + } + return 0; +} + +void Object::encode(bufferlist& bl) const { + ENCODE_START(1, 1, bl); + encode(data, bl); + encode(xattr, bl); + encode(omap_header, bl); + encode(omap, bl); + ENCODE_FINISH(bl); +} + +void Object::decode(bufferlist::const_iterator& p) { + DECODE_START(1, p); + decode(data, p); + decode(xattr, p); + decode(omap_header, p); + decode(omap, p); + DECODE_FINISH(p); +} + +} diff --git a/src/crimson/os/cyan_object.h b/src/crimson/os/cyan_object.h new file mode 100644 index 00000000..6846b1a4 --- /dev/null +++ b/src/crimson/os/cyan_object.h @@ -0,0 +1,38 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +#include +#include +#include +#include +#include +#include "include/buffer.h" + +namespace ceph::os { + +struct Object : public boost::intrusive_ref_counter< + Object, + boost::thread_unsafe_counter> +{ + using bufferlist = ceph::bufferlist; + + bufferlist data; + std::map xattr; + bufferlist omap_header; + std::map omap; + + typedef boost::intrusive_ptr Ref; + + Object() = default; + + // interface for object data + size_t get_size() const; + int read(uint64_t offset, uint64_t len, bufferlist &bl); + int write(uint64_t offset, const bufferlist &bl); + int clone(Object *src, uint64_t srcoff, uint64_t len, + uint64_t dstoff); + int truncate(uint64_t offset); + + void encode(bufferlist& bl) const; + void decode(bufferlist::const_iterator& p); +}; +} diff --git a/src/crimson/os/cyan_store.cc b/src/crimson/os/cyan_store.cc new file mode 100644 index 00000000..68ccae88 --- /dev/null +++ b/src/crimson/os/cyan_store.cc @@ -0,0 +1,277 @@ +#include "cyan_store.h" + +#include + +#include "common/safe_io.h" + +#include "crimson/os/cyan_collection.h" +#include "crimson/os/cyan_object.h" +#include "crimson/os/Transaction.h" + +namespace { + seastar::logger& logger() { + return ceph::get_logger(ceph_subsys_filestore); + } +} + +namespace ceph::os { + +using ObjectRef = boost::intrusive_ptr; + +CyanStore::CyanStore(const std::string& path) + : path{path} +{} + +CyanStore::~CyanStore() = default; + +seastar::future<> CyanStore::mount() +{ + bufferlist bl; + string fn = path + "/collections"; + string err; + if (int r = bl.read_file(fn.c_str(), &err); r < 0) { + throw std::runtime_error("read_file"); + } + + set collections; + auto p = bl.cbegin(); + decode(collections, p); + + for (auto& coll : collections) { + string fn = fmt::format("{}/{}", path, coll); + bufferlist cbl; + if (int r = cbl.read_file(fn.c_str(), &err); r < 0) { + throw std::runtime_error("read_file"); + } + CollectionRef c{new Collection{coll}}; + auto p = cbl.cbegin(); + c->decode(p); + coll_map[coll] = c; + used_bytes += c->used_bytes(); + } + return seastar::now(); +} + +seastar::future<> CyanStore::umount() +{ + set collections; + for (auto& [col, ch] : coll_map) { + collections.insert(col); + bufferlist bl; + ceph_assert(ch); + ch->encode(bl); + string fn = fmt::format("{}/{}", path, col); + if (int r = bl.write_file(fn.c_str()); r < 0) { + throw std::runtime_error("write_file"); + } + } + + string fn = path + "/collections"; + bufferlist bl; + encode(collections, bl); + if (int r = bl.write_file(fn.c_str()); r < 0) { + throw std::runtime_error("write_file"); + } + return seastar::now(); +} + +seastar::future<> CyanStore::mkfs(uuid_d osd_fsid) +{ + string fsid_str; + int r = read_meta("fsid", &fsid_str); + if (r == -ENOENT) { + write_meta("fsid", fmt::format("{}", osd_fsid)); + } else if (r < 0) { + throw std::runtime_error("read_meta"); + } else { + logger().error("{} already has fsid {}", __func__, fsid_str); + throw std::runtime_error("mkfs"); + } + + string fn = path + "/collections"; + bufferlist bl; + set collections; + encode(collections, bl); + r = bl.write_file(fn.c_str()); + if (r < 0) + throw std::runtime_error("write_file"); + + write_meta("type", "memstore"); + return seastar::now(); +} + +CyanStore::CollectionRef CyanStore::create_new_collection(const coll_t& cid) +{ + auto c = new Collection{cid}; + return new_coll_map[cid] = c; +} + +CyanStore::CollectionRef CyanStore::open_collection(const coll_t& cid) +{ + auto cp = coll_map.find(cid); + if (cp == coll_map.end()) + return {}; + return cp->second; +} + +std::vector CyanStore::list_collections() +{ + std::vector collections; + for (auto& coll : coll_map) { + collections.push_back(coll.first); + } + return collections; +} + +seastar::future CyanStore::read(CollectionRef c, + const ghobject_t& oid, + uint64_t offset, + size_t len, + uint32_t op_flags) +{ + logger().info("{} {} {} {}~{}", + __func__, c->cid, oid, offset, len); + if (!c->exists) { + throw std::runtime_error(fmt::format("collection does not exist: {}", c->cid)); + } + ObjectRef o = c->get_object(oid); + if (!o) { + throw std::runtime_error(fmt::format("object does not exist: {}", oid)); + } + if (offset >= o->get_size()) + return seastar::make_ready_future(); + size_t l = len; + if (l == 0 && offset == 0) // note: len == 0 means read the entire object + l = o->get_size(); + else if (offset + l > o->get_size()) + l = o->get_size() - offset; + bufferlist bl; + if (int r = o->read(offset, l, bl); r < 0) { + throw std::runtime_error("read"); + } + return seastar::make_ready_future(std::move(bl)); +} + +seastar::future +CyanStore::omap_get_values(CollectionRef c, + const ghobject_t& oid, + std::vector&& keys) +{ + logger().info("{} {} {}", + __func__, c->cid, oid); + auto o = c->get_object(oid); + if (!o) { + throw std::runtime_error(fmt::format("object does not exist: {}", oid)); + } + omap_values_t values; + for (auto& key : keys) { + if (auto found = o->omap.find(key); found != o->omap.end()) { + values.insert(*found); + } + } + return seastar::make_ready_future(std::move(values)); +} + +seastar::future<> CyanStore::do_transaction(CollectionRef ch, + Transaction&& t) +{ + auto i = t.begin(); + while (i.have_op()) { + Transaction::Op* op = i.decode_op(); + int r = 0; + switch (op->op) { + case Transaction::OP_NOP: + break; + case Transaction::OP_WRITE: + { + coll_t cid = i.get_cid(op->cid); + ghobject_t oid = i.get_oid(op->oid); + uint64_t off = op->off; + uint64_t len = op->len; + uint32_t fadvise_flags = i.get_fadvise_flags(); + bufferlist bl; + i.decode_bl(bl); + r = _write(cid, oid, off, len, bl, fadvise_flags); + } + break; + case Transaction::OP_MKCOLL: + { + coll_t cid = i.get_cid(op->cid); + r = _create_collection(cid, op->split_bits); + } + break; + default: + logger().error("bad op {}", static_cast(op->op)); + abort(); + } + if (r < 0) { + abort(); + } + } + return seastar::now(); +} + +int CyanStore::_write(const coll_t& cid, const ghobject_t& oid, + uint64_t offset, size_t len, const bufferlist& bl, + uint32_t fadvise_flags) +{ + logger().info("{} {} {} {} ~ {}", + __func__, cid, oid, offset, len); + assert(len == bl.length()); + + auto c = open_collection(cid); + if (!c) + return -ENOENT; + + ObjectRef o = c->get_or_create_object(oid); + if (len > 0) { + const ssize_t old_size = o->get_size(); + o->write(offset, bl); + used_bytes += (o->get_size() - old_size); + } + + return 0; +} + +int CyanStore::_create_collection(const coll_t& cid, int bits) +{ + auto result = coll_map.insert(std::make_pair(cid, CollectionRef())); + if (!result.second) + return -EEXIST; + auto p = new_coll_map.find(cid); + assert(p != new_coll_map.end()); + result.first->second = p->second; + result.first->second->bits = bits; + new_coll_map.erase(p); + return 0; +} + +void CyanStore::write_meta(const std::string& key, + const std::string& value) +{ + std::string v = value; + v += "\n"; + if (int r = safe_write_file(path.c_str(), key.c_str(), + v.c_str(), v.length(), 0600); + r < 0) { + throw std::runtime_error{fmt::format("unable to write_meta({})", key)}; + } +} + +int CyanStore::read_meta(const std::string& key, + std::string* value) +{ + char buf[4096]; + int r = safe_read_file(path.c_str(), key.c_str(), + buf, sizeof(buf)); + if (r <= 0) { + return r; + } + // drop trailing newlines + while (r && isspace(buf[r-1])) { + --r; + } + *value = string{buf, static_cast(r)}; + return 0; +} +} diff --git a/src/crimson/os/cyan_store.h b/src/crimson/os/cyan_store.h new file mode 100644 index 00000000..0b7f3d87 --- /dev/null +++ b/src/crimson/os/cyan_store.h @@ -0,0 +1,63 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab + +#pragma once + +#include +#include +#include +#include +#include +#include "osd/osd_types.h" +#include "include/uuid.h" + +namespace ceph::os { + +class Collection; +class Transaction; + +// a just-enough store for reading/writing the superblock +class CyanStore { + using CollectionRef = boost::intrusive_ptr; + const std::string path; + std::unordered_map coll_map; + std::map new_coll_map; + uint64_t used_bytes = 0; + +public: + CyanStore(const std::string& path); + ~CyanStore(); + + seastar::future<> mount(); + seastar::future<> umount(); + + seastar::future<> mkfs(uuid_d osd_fsid); + seastar::future read(CollectionRef c, + const ghobject_t& oid, + uint64_t offset, + size_t len, + uint32_t op_flags = 0); + using omap_values_t = std::map>; + seastar::future omap_get_values( + CollectionRef c, + const ghobject_t& oid, + std::vector&& keys); + CollectionRef create_new_collection(const coll_t& cid); + CollectionRef open_collection(const coll_t& cid); + std::vector list_collections(); + + seastar::future<> do_transaction(CollectionRef ch, + Transaction&& txn); + + void write_meta(const std::string& key, + const std::string& value); + int read_meta(const std::string& key, std::string* value); + +private: + int _write(const coll_t& cid, const ghobject_t& oid, + uint64_t offset, size_t len, const bufferlist& bl, + uint32_t fadvise_flags); + int _create_collection(const coll_t& cid, int bits); +}; + +} -- cgit v1.2.3