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416 lines (367 loc) · 14.3 KB
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#include "file.h"
#include "logger.h"
#ifdef IFOPSH_WITH_ROCKSDB
#include <rocksdb/table.h>
#include <rocksdb/convenience.h>
#include <rocksdb/version.h>
#endif
#include <fstream>
#include <memory>
#include <sys/types.h>
#include <sys/stat.h>
#include <utility>
/*
ifcopenshell::IfcBaseClass* ifcopenshell::impl::rocks_db_file_storage::rocksdb_instance_iterator::operator*() const {
auto it = storage_->byid_.find(*read_id_());
if (it != storage_->byid_.end()) {
// @todo define an implicit std::to_string() in all map adapters with leading 0s
auto jt = storage_->instance_cache_.find(it->second);
if (jt != storage_->instance_cache_.end()) {
return jt->second;
} else {
return storage_->assert_existance(it->first, by_name);
}
}
}
*/
ifcopenshell::impl::rocks_db_file_storage::rocksdb_types_iterator::value_type const& ifcopenshell::impl::rocks_db_file_storage::rocksdb_types_iterator::operator*() const {
return storage_->file->schema()->declarations()[*read_id_()];
}
express::base ifcopenshell::impl::rocks_db_file_storage::assert_existance(size_t number, instance_ref r) {
#ifndef IFOPSH_WITH_ROCKSDB
(void)number;
(void)r;
#endif
#ifdef IFOPSH_WITH_ROCKSDB
std::lock_guard<std::mutex> lock(instance_cache_mutex_);
if (r == ifcopenshell::impl::rocks_db_file_storage::entityinstance_ref) {
auto it = instance_cache_.find(number);
if (it != instance_cache_.end()) {
return express::base(it->second);
}
} else {
auto it = type_instance_cache_.find(number);
if (it != type_instance_cache_.end()) {
return express::base(it->second);
}
}
std::string v;
rocksdb::Status s = db->Get(rocksdb::ReadOptions{}, (r == entityinstance_ref ? "i|" : "t|") + std::to_string(number) + "|_", &v);
if (s.ok()) {
size_t s;
memcpy(&s, v.data(), sizeof(size_t));
if (s >= file->schema()->declarations().size()) {
throw std::runtime_error("");
}
auto decl = file->schema()->declarations()[s];
bool is_entity = decl->as_entity() != nullptr;
if (is_entity != (r == entityinstance_ref)) {
throw std::runtime_error("Incorrect reference");
}
// @nb note that in case of type declarations we pass the identity as the number so
// that we can read back the attributes from the db (we cannot assign to identity).
auto data = ifcopenshell::make_pointer_type<instance_data>(file, decl, number, rocks_db_attribute_storage{});
if (r == ifcopenshell::impl::rocks_db_file_storage::entityinstance_ref) {
instance_cache_.insert({number, data});
} else {
type_instance_cache_.insert({number, data});
}
return express::base(data);
} else {
throw exception("Instance #" + boost::lexical_cast<std::string>(number) + " not found");
}
#else
throw exception("RocksDB support not compiled in");
#endif
}
namespace {
std::unique_ptr<rocksdb::DB> init_db(const std::string& filepath, bool readonly) {
#ifndef IFOPSH_WITH_ROCKSDB
(void)filepath;
(void)readonly;
#endif
#ifdef IFOPSH_WITH_ROCKSDB
rocksdb::Options options;
// options.disable_auto_compactions = true;
options.create_if_missing = true;
options.merge_operator.reset(new ConcatenateIdMergeOperator());
auto vec = rocksdb::GetSupportedCompressions();
options.compression = std::find(vec.begin(), vec.end(), rocksdb::kZSTD) != vec.end() ? rocksdb::kZSTD : rocksdb::kNoCompression;
rocksdb::BlockBasedTableOptions tbo;
/*
tbo.block_size = 16 * 1024;
tbo.filter_policy.reset(rocksdb::NewBloomFilterPolicy(10, false)); // bits/key
tbo.partition_filters = true;
tbo.index_type = rocksdb::BlockBasedTableOptions::kHashSearch;
tbo.cache_index_and_filter_blocks = true;
tbo.cache_index_and_filter_blocks_with_high_priority = true;
tbo.pin_top_level_index_and_filter = true;
*/
// 28: 256MB
// 29: 512MB
// 30: 1GB
auto block_cache = rocksdb::NewLRUCache(1ULL << 30);
tbo.block_cache = block_cache;
// rocksdb::CreateDBStatistics();
options.table_factory.reset(rocksdb::NewBlockBasedTableFactory(tbo));
rocksdb::Status status;
std::unique_ptr<rocksdb::DB> db;
if (readonly) {
#if ROCKSDB_MAJOR > 9 || (ROCKSDB_MAJOR == 9 && ROCKSDB_MINOR >= 11)
status = rocksdb::DB::OpenForReadOnly(options, filepath, &db);
#else
rocksdb::DB* raw = nullptr;
status = rocksdb::DB::OpenForReadOnly(options, filepath, &raw);
db.reset(raw);
#endif
} else {
#if ROCKSDB_MAJOR > 9 || (ROCKSDB_MAJOR == 9 && ROCKSDB_MINOR >= 11)
status = rocksdb::DB::Open(options, filepath, &db);
#else
rocksdb::DB* raw = nullptr;
status = rocksdb::DB::Open(options, filepath, &raw);
db.reset(raw);
#endif
}
if (!status.ok()) {
return nullptr;
}
return db;
#else
return nullptr;
#endif
}
}
// @todo naming
ifcopenshell::impl::rocks_db_file_storage::rocks_db_file_storage(const std::string& filepath, ifcopenshell::file* ffile, bool readonly)
: db(init_db(filepath, readonly))
, file(ffile)
, instance_ids_(db.get(), "i|")
, instance_by_name_(&instance_ids_, [this](size_t v) { return assert_existance(v, entityinstance_ref); })
, bytype_(db.get(), "t|")
, byguid_internal_(db.get(), "g|"),
byguid_(&byguid_internal_, [this](size_t v) { return assert_existance(v, entityinstance_ref); }, [](const express::base& v) { return v.identity(); })
, byref_excl_(db.get(), "v|")
// @todo by_identity is probably not correct here, this mapping is Name -> Identity, so Fn should have access to full pair?
// , byidentity_(&byid_, [this](size_t v) { return assert_existance(v, by_identity); }, [](ifcopenshell::IfcBaseClass* v) { return v->identity(); })
{
read_only_ = readonly;
#ifdef IFOPSH_WITH_ROCKSDB
wopts.disableWAL = true;
#endif
}
ifcopenshell::impl::rocks_db_file_storage::~rocks_db_file_storage()
{
#ifdef IFOPSH_WITH_ROCKSDB
if (db != nullptr) {
if (!read_only_) {
rocksdb::FlushOptions flush_options;
flush_options.allow_write_stall = true;
flush_options.wait = true; // Wait until flush completes.
rocksdb::Status s = db->Flush(flush_options);
// compact entire db
db->CompactRange(rocksdb::CompactRangeOptions{}, nullptr, nullptr);
assert(s.ok());
}
db->Close();
}
#endif
}
express::base ifcopenshell::impl::rocks_db_file_storage::instance_by_id(int id)
{
// @todo rename assert_existance() -> instance_by_id();
// - no cannot be done, because it needs to differentiate between entity instances and typedecls
return assert_existance(id, entityinstance_ref);
}
void ifcopenshell::impl::rocks_db_file_storage::process_deletion_inverse(const express::base& inst)
{
#ifndef IFOPSH_WITH_ROCKSDB
(void)inst;
#endif
#ifdef IFOPSH_WITH_ROCKSDB
auto id = inst.id();
{
// compute next prefix that does not start with v|{id}|
auto prefix = "v|" + std::to_string(id) + "|";
auto it = std::unique_ptr<rocksdb::Iterator>(db->NewIterator(rocksdb::ReadOptions()));
it->Seek(prefix);
while (it->Valid()) {
it->Next();
if (!it->key().starts_with(prefix)) {
break;
}
}
rocksdb::WriteBatch batch;
batch.DeleteRange(prefix, it->key());
db->Write(wopts, &batch);
}
// This is based on traversal which needs instances to still be contained in the map.
// another option would be to keep byid intact for the remainder of this loop
auto entity_attributes = traverse(inst, 1);
for (auto& entity_attribute : entity_attributes) {
if (entity_attribute == inst) {
continue;
}
const unsigned int name = entity_attribute.id();
// Do not update inverses for simple types (which have id()==0 in IfcOpenShell).
if (name != 0) {
// Find instances entity -> other
// and update inverses from entity into other
{
auto prefix = "v|" + std::to_string(name) + "|";
auto it = std::unique_ptr<rocksdb::Iterator>(db->NewIterator(rocksdb::ReadOptions()));
it->Seek(prefix);
while (it->Valid() && it->key().starts_with(prefix)) {
std::string s = it->value().ToString();
// Iterator are snapshotted? So don't get invalidated?
std::vector<size_t> vals(s.size() / sizeof(size_t));
memcpy(vals.data(), s.data(), s.size());
vals.erase(std::find(vals.begin(), vals.end(), (size_t)id));
s.resize(vals.size() * sizeof(size_t));
memcpy(s.data(), vals.data(), s.size());
db->Put(wopts, it->key(), s);
it->Next();
}
}
}
}
#endif
}
express::base ifcopenshell::impl::in_memory_file_storage::instance_by_id(int id)
{
auto it = byid_.find(id);
if (it == byid_.end()) {
throw exception("Instance #" + boost::lexical_cast<std::string>(id) + " not found");
}
return express::base(it->second);
}
ifcopenshell::file::~file() {}
namespace {
// Utility functions for path handling in order not to rely on C++17's std::filesystem
#ifdef _WIN32
#define stat_t struct _stat
inline int stat_(const char* p, stat_t* s) { return ::_stat(p, s); }
#ifndef S_ISDIR
#define S_ISDIR(m) (((m) & _S_IFDIR) != 0)
#endif
#ifndef S_ISREG
#define S_ISREG(m) (((m) & _S_IFREG) != 0)
#endif
#else
using stat_t = struct stat;
inline int stat_(const char* p, stat_t* s) { return ::stat(p, s); }
#endif
inline bool path_exists_(const std::string& p, stat_t* out = nullptr) {
stat_t tmp;
stat_t* s = out ? out : &tmp;
return stat_(p.c_str(), s) == 0;
}
inline bool path_is_directory_(const stat_t& s) { return S_ISDIR(s.st_mode); }
inline bool path_is_regular_file_(const stat_t& s) { return S_ISREG(s.st_mode); }
inline std::string path_join_(const std::string& dir, const std::string& name) {
if (dir.empty()) return name;
const char last = dir.back();
if (last == '/' || last == '\\') return dir + name;
#ifdef _WIN32
const char sep = '\\';
#else
const char sep = '/';
#endif
return dir + sep + name;
}
} // namespace
ifcopenshell::filetype ifcopenshell::guess_file_type(const std::string& fn) {
stat_t st{};
if (!path_exists_(fn, &st)) {
// @todo this is just weird, but for consistency with earlier behaviour
// for now the only intent for this function is to auto-detect RocksDB
return FT_IFCSPF;
}
if (path_is_directory_(st)) {
// Typical RocksDB file to look for
auto currentFile = path_join_(fn, "CURRENT");
stat_t cst{};
if (!path_exists_(currentFile, &cst) || !path_is_regular_file_(cst)) {
return FT_UNKNOWN;
}
std::ifstream infile(currentFile);
if (!infile) {
return FT_UNKNOWN;
}
std::string line;
if (!std::getline(infile, line)) {
return FT_UNKNOWN;
}
// RocksDB's CURRENT file typically contains a line like "MANIFEST-000001".
if (line.find("MANIFEST-") == 0) {
return FT_ROCKSDB;
}
return FT_UNKNOWN;
} else {
// @todo just return SPF for now, but ideally this will be augmented with all other options
return FT_IFCSPF;
}
}
express::base ifcopenshell::impl::rocks_db_file_storage::create(const ifcopenshell::declaration* decl, int id) {
(void)decl;
(void)id;
return express::base{};
/*
if (decl->as_entity() || decl->as_type_declaration()) {
auto* inst = file->schema()->instantiate(decl, rocks_db_attribute_storage{});
// @todo maybe this needs to be set to file? In order to have a context (ie. rocksdb::db*) to write to?
inst->file_ = nullptr;
return file->add_entity(inst);
} else {
throw std::runtime_error("Requires and entity or type declaration");
}
*/
}
express::base ifcopenshell::impl::in_memory_file_storage::create(const ifcopenshell::declaration* decl, int id) {
uint32_t instance_name;
if (decl->as_entity() != nullptr) {
instance_name = id == -1 ? (int)file->fresh_id() : id;
} else if (decl->as_type_declaration() != nullptr) {
instance_name = 0;
} else {
throw std::runtime_error("Requires and entity or type declaration");
}
auto data = ifcopenshell::make_pointer_type<instance_data>(file, decl, instance_name, decl->as_entity() ? in_memory_attribute_storage(decl->as_entity()->attribute_count()) : in_memory_attribute_storage(1));
if (instance_name) {
byid_.insert({instance_name, data});
} else {
tbyid_.insert({data->identity(), data});
}
express::base inst(data);
add_type_ref(inst);
return inst;
}
express::base ifcopenshell::file::create(const ifcopenshell::declaration* decl, int id) {
if (id != -1) {
if (decl->as_entity() == nullptr) {
throw ifcopenshell::exception("Assigning instance id during creation is only valid for entity declarations");
}
bool id_already_exists = false;
try {
if (check_existance_before_adding) {
instance_by_id(id);
id_already_exists = true;
}
} catch (...) {
}
if (id_already_exists) {
throw ifcopenshell::exception("An instance with id " + boost::lexical_cast<std::string>(id) + " is already part of this file");
}
if ((unsigned)id > max_id_) {
max_id_ = (unsigned)id;
}
}
return std::visit([&](auto& m) -> express::base {
if constexpr (std::is_same_v<std::decay_t<decltype(m)>, impl::in_memory_file_storage> ||
std::is_same_v<std::decay_t<decltype(m)>, impl::rocks_db_file_storage>) {
return m.create(decl, id);
} else {
return express::base{};
}
}, storage_);
}