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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) 2013 Inktank <info@inktank.com>
*
* 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.
*
*/
#include "HitSet.h"
#include "common/Formatter.h"
using std::ostream;
using std::list;
using ceph::Formatter;
// -- HitSet --
HitSet::HitSet(const HitSet::Params& params)
: sealed(false)
{
switch (params.get_type()) {
case TYPE_BLOOM:
{
BloomHitSet::Params *p =
static_cast<BloomHitSet::Params*>(params.impl.get());
impl.reset(new BloomHitSet(p));
}
break;
case TYPE_EXPLICIT_HASH:
impl.reset(new ExplicitHashHitSet(static_cast<ExplicitHashHitSet::Params*>(params.impl.get())));
break;
case TYPE_EXPLICIT_OBJECT:
impl.reset(new ExplicitObjectHitSet(static_cast<ExplicitObjectHitSet::Params*>(params.impl.get())));
break;
default:
assert (0 == "unknown HitSet type");
}
}
void HitSet::encode(ceph::buffer::list &bl) const
{
ENCODE_START(1, 1, bl);
encode(sealed, bl);
if (impl) {
encode((__u8)impl->get_type(), bl);
impl->encode(bl);
} else {
encode((__u8)TYPE_NONE, bl);
}
ENCODE_FINISH(bl);
}
void HitSet::decode(ceph::buffer::list::const_iterator& bl)
{
DECODE_START(1, bl);
decode(sealed, bl);
__u8 type;
decode(type, bl);
switch ((impl_type_t)type) {
case TYPE_EXPLICIT_HASH:
impl.reset(new ExplicitHashHitSet);
break;
case TYPE_EXPLICIT_OBJECT:
impl.reset(new ExplicitObjectHitSet);
break;
case TYPE_BLOOM:
impl.reset(new BloomHitSet);
break;
case TYPE_NONE:
impl.reset(NULL);
break;
default:
throw ceph::buffer::malformed_input("unrecognized HitMap type");
}
if (impl)
impl->decode(bl);
DECODE_FINISH(bl);
}
void HitSet::dump(Formatter *f) const
{
f->dump_string("type", get_type_name());
f->dump_string("sealed", sealed ? "yes" : "no");
if (impl)
impl->dump(f);
}
void HitSet::generate_test_instances(list<HitSet*>& o)
{
o.push_back(new HitSet);
o.push_back(new HitSet(new BloomHitSet(10, .1, 1)));
o.back()->insert(hobject_t());
o.back()->insert(hobject_t("asdf", "", CEPH_NOSNAP, 123, 1, ""));
o.back()->insert(hobject_t("qwer", "", CEPH_NOSNAP, 456, 1, ""));
o.push_back(new HitSet(new ExplicitHashHitSet));
o.back()->insert(hobject_t());
o.back()->insert(hobject_t("asdf", "", CEPH_NOSNAP, 123, 1, ""));
o.back()->insert(hobject_t("qwer", "", CEPH_NOSNAP, 456, 1, ""));
o.push_back(new HitSet(new ExplicitObjectHitSet));
o.back()->insert(hobject_t());
o.back()->insert(hobject_t("asdf", "", CEPH_NOSNAP, 123, 1, ""));
o.back()->insert(hobject_t("qwer", "", CEPH_NOSNAP, 456, 1, ""));
}
HitSet::Params::Params(const Params& o) noexcept
{
if (o.get_type() != TYPE_NONE) {
create_impl(o.get_type());
// it's annoying to write virtual operator= methods; use encode/decode
// instead.
ceph::buffer::list bl;
o.impl->encode(bl);
auto p = bl.cbegin();
impl->decode(p);
} // else we don't need to do anything
}
const HitSet::Params& HitSet::Params::operator=(const Params& o)
{
create_impl(o.get_type());
if (o.impl) {
// it's annoying to write virtual operator= methods; use encode/decode
// instead.
ceph::buffer::list bl;
o.impl->encode(bl);
auto p = bl.cbegin();
impl->decode(p);
}
return *this;
}
void HitSet::Params::encode(ceph::buffer::list &bl) const
{
ENCODE_START(1, 1, bl);
if (impl) {
encode((__u8)impl->get_type(), bl);
impl->encode(bl);
} else {
encode((__u8)TYPE_NONE, bl);
}
ENCODE_FINISH(bl);
}
bool HitSet::Params::create_impl(impl_type_t type)
{
switch ((impl_type_t)type) {
case TYPE_EXPLICIT_HASH:
impl.reset(new ExplicitHashHitSet::Params);
break;
case TYPE_EXPLICIT_OBJECT:
impl.reset(new ExplicitObjectHitSet::Params);
break;
case TYPE_BLOOM:
impl.reset(new BloomHitSet::Params);
break;
case TYPE_NONE:
impl.reset(NULL);
break;
default:
return false;
}
return true;
}
void HitSet::Params::decode(ceph::buffer::list::const_iterator& bl)
{
DECODE_START(1, bl);
__u8 type;
decode(type, bl);
if (!create_impl((impl_type_t)type))
throw ceph::buffer::malformed_input("unrecognized HitMap type");
if (impl)
impl->decode(bl);
DECODE_FINISH(bl);
}
void HitSet::Params::dump(Formatter *f) const
{
f->dump_string("type", HitSet::get_type_name(get_type()));
if (impl)
impl->dump(f);
}
void HitSet::Params::generate_test_instances(list<HitSet::Params*>& o)
{
#define loop_hitset_params(kind) \
{ \
list<kind::Params*> params; \
kind::Params::generate_test_instances(params); \
for (list<kind::Params*>::iterator i = params.begin(); \
i != params.end(); ++i) \
o.push_back(new Params(*i)); \
}
o.push_back(new Params);
o.push_back(new Params(new BloomHitSet::Params));
loop_hitset_params(BloomHitSet);
o.push_back(new Params(new ExplicitHashHitSet::Params));
loop_hitset_params(ExplicitHashHitSet);
o.push_back(new Params(new ExplicitObjectHitSet::Params));
loop_hitset_params(ExplicitObjectHitSet);
}
ostream& operator<<(ostream& out, const HitSet::Params& p) {
out << HitSet::get_type_name(p.get_type());
if (p.impl) {
out << "{";
p.impl->dump_stream(out);
}
out << "}";
return out;
}
void ExplicitHashHitSet::dump(Formatter *f) const {
f->dump_unsigned("insert_count", count);
f->open_array_section("hash_set");
for (ceph::unordered_set<uint32_t>::const_iterator p = hits.begin();
p != hits.end();
++p)
f->dump_unsigned("hash", *p);
f->close_section();
}
void ExplicitObjectHitSet::dump(Formatter *f) const {
f->dump_unsigned("insert_count", count);
f->open_array_section("set");
for (ceph::unordered_set<hobject_t>::const_iterator p = hits.begin();
p != hits.end();
++p) {
f->open_object_section("object");
p->dump(f);
f->close_section();
}
f->close_section();
}
void BloomHitSet::Params::dump(Formatter *f) const {
f->dump_float("false_positive_probability", get_fpp());
f->dump_int("target_size", target_size);
f->dump_int("seed", seed);
}
void BloomHitSet::dump(Formatter *f) const {
f->open_object_section("bloom_filter");
bloom.dump(f);
f->close_section();
}
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