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#include "ObjectModel.h"
#include <algorithm>
#include <execution>
#include <iterator>
using ObjectModel = ceph::io_exerciser::ObjectModel;
ObjectModel::ObjectModel(const std::string& oid, uint64_t block_size, int seed)
: Model(oid, block_size), created(false) {
rng.seed(seed);
}
int ObjectModel::get_seed(uint64_t offset) const {
ceph_assert(offset < contents.size());
return contents[offset];
}
std::vector<int> ObjectModel::get_seed_offsets(int seed) const {
std::vector<int> offsets;
for (size_t i = 0; i < contents.size(); i++) {
if (contents[i] == seed) {
offsets.push_back(i);
}
}
return offsets;
}
std::string ObjectModel::to_string(int mask) const {
if (!created) {
return "Object does not exist";
}
std::string result = "{";
for (uint64_t i = 0; i < contents.size(); i++) {
if (i != 0) {
result += ",";
}
result += std::to_string(contents[i] & mask);
}
result += "}";
return result;
}
bool ObjectModel::readyForIoOp(IoOp& op) { return true; }
void ObjectModel::applyIoOp(IoOp& op) {
auto generate_random = [&rng = rng]() { return rng(); };
auto verify_and_record_read_op =
[&contents = contents, &created = created, &num_io = num_io,
&reads = reads,
&writes = writes]<OpType opType, int N>(ReadWriteOp<opType, N>& readOp) {
ceph_assert(created);
for (int i = 0; i < N; i++) {
ceph_assert(readOp.offset[i] + readOp.length[i] <= contents.size());
// Not allowed: read overlapping with parallel write
ceph_assert(!writes.intersects(readOp.offset[i], readOp.length[i]));
reads.union_insert(readOp.offset[i], readOp.length[i]);
}
num_io++;
};
auto verify_write_and_record_and_generate_seed =
[&generate_random, &contents = contents, &created = created,
&num_io = num_io, &reads = reads,
&writes = writes]<OpType opType, int N>(ReadWriteOp<opType, N> writeOp) {
ceph_assert(created);
for (int i = 0; i < N; i++) {
// Not allowed: write overlapping with parallel read or write
ceph_assert(!reads.intersects(writeOp.offset[i], writeOp.length[i]));
ceph_assert(!writes.intersects(writeOp.offset[i], writeOp.length[i]));
writes.union_insert(writeOp.offset[i], writeOp.length[i]);
ceph_assert(writeOp.offset[i] + writeOp.length[i] <= contents.size());
std::generate(std::execution::seq,
std::next(contents.begin(), writeOp.offset[i]),
std::next(contents.begin(),
writeOp.offset[i] + writeOp.length[i]),
generate_random);
}
num_io++;
};
auto verify_failed_write_and_record =
[&contents = contents, &created = created, &num_io = num_io,
&reads = reads,
&writes = writes]<OpType opType, int N>(ReadWriteOp<opType, N> writeOp) {
// Ensure write should still be valid, even though we are expecting OSD
// failure
ceph_assert(created);
for (int i = 0; i < N; i++) {
// Not allowed: write overlapping with parallel read or write
ceph_assert(!reads.intersects(writeOp.offset[i], writeOp.length[i]));
ceph_assert(!writes.intersects(writeOp.offset[i], writeOp.length[i]));
writes.union_insert(writeOp.offset[i], writeOp.length[i]);
ceph_assert(writeOp.offset[i] + writeOp.length[i] <= contents.size());
}
num_io++;
};
switch (op.getOpType()) {
case OpType::Barrier:
reads.clear();
writes.clear();
break;
case OpType::Create:
ceph_assert(!created);
ceph_assert(reads.empty());
ceph_assert(writes.empty());
created = true;
contents.resize(static_cast<CreateOp&>(op).size);
std::generate(std::execution::seq, contents.begin(), contents.end(),
generate_random);
break;
case OpType::Remove:
ceph_assert(created);
ceph_assert(reads.empty());
ceph_assert(writes.empty());
created = false;
contents.resize(0);
break;
case OpType::Read: {
SingleReadOp& readOp = static_cast<SingleReadOp&>(op);
verify_and_record_read_op(readOp);
} break;
case OpType::Read2: {
DoubleReadOp& readOp = static_cast<DoubleReadOp&>(op);
verify_and_record_read_op(readOp);
} break;
case OpType::Read3: {
TripleReadOp& readOp = static_cast<TripleReadOp&>(op);
verify_and_record_read_op(readOp);
} break;
case OpType::Write: {
ceph_assert(created);
SingleWriteOp& writeOp = static_cast<SingleWriteOp&>(op);
verify_write_and_record_and_generate_seed(writeOp);
} break;
case OpType::Write2: {
DoubleWriteOp& writeOp = static_cast<DoubleWriteOp&>(op);
verify_write_and_record_and_generate_seed(writeOp);
} break;
case OpType::Write3: {
TripleWriteOp& writeOp = static_cast<TripleWriteOp&>(op);
verify_write_and_record_and_generate_seed(writeOp);
} break;
case OpType::FailedWrite: {
ceph_assert(created);
SingleWriteOp& writeOp = static_cast<SingleWriteOp&>(op);
verify_failed_write_and_record(writeOp);
} break;
case OpType::FailedWrite2: {
DoubleWriteOp& writeOp = static_cast<DoubleWriteOp&>(op);
verify_failed_write_and_record(writeOp);
} break;
case OpType::FailedWrite3: {
TripleWriteOp& writeOp = static_cast<TripleWriteOp&>(op);
verify_failed_write_and_record(writeOp);
} break;
default:
break;
}
}
void ObjectModel::encode(ceph::buffer::list& bl) const {
ENCODE_START(1, 1, bl);
encode(created, bl);
if (created) {
encode(contents, bl);
}
ENCODE_FINISH(bl);
}
void ObjectModel::decode(ceph::buffer::list::const_iterator& bl) {
DECODE_START(1, bl);
DECODE_OLDEST(1);
decode(created, bl);
if (created) {
decode(contents, bl);
} else {
contents.resize(0);
}
DECODE_FINISH(bl);
}
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