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GeezerVison is showing github.com — osm2pgsql/src/middle-ram.cpp at master · osm2pgsql-dev/osm2pgsql

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/**
* SPDX-License-Identifier: GPL-2.0-or-later
*
* This file is part of osm2pgsql (https://osm2pgsql.org/).
*
* Copyright (C) 2006-2026 by the osm2pgsql developer community.
* For a full list of authors see the git log.
*/
#include "middle-ram.hpp"
#include "logging.hpp"
#include "node-persistent-cache.hpp"
#include "options.hpp"
#include "output-requirements.hpp"
#include <osmium/builder/osm_object_builder.hpp>
#include <osmium/util/delta.hpp>
// Workaround: This must be included before buffer_string.hpp due to a missing
// include in the upstream code. https://github.com/mapbox/protozero/pull/104
#include <protozero/config.hpp>
#include <protozero/buffer_string.hpp>
#include <protozero/varint.hpp>
#include <cassert>
#include <memory>
namespace {
void add_delta_encoded_way_node_list(std::string *data,
osmium::WayNodeList const &wnl)
{
assert(data);
// Add number of nodes in list
protozero::add_varint_to_buffer(data, wnl.size());
// Add delta encoded node ids
osmium::DeltaEncode<osmid_t> delta;
for (auto const &nr : wnl) {
protozero::add_varint_to_buffer(
data, protozero::encode_zigzag64(delta.update(nr.ref())));
}
}
void get_delta_encoded_way_nodes_list(std::string const &data,
std::size_t offset,
osmium::builder::WayBuilder *builder)
{
assert(builder);
char const *begin = data.data() + offset;
char const *const end = data.data() + data.size();
auto count = protozero::decode_varint(&begin, end);
osmium::DeltaDecode<osmid_t> delta;
osmium::builder::WayNodeListBuilder wnl_builder{*builder};
while (count > 0) {
auto const val =
protozero::decode_zigzag64(protozero::decode_varint(&begin, end));
wnl_builder.add_node_ref(delta.update(val));
--count;
}
}
} // anonymous namespace
middle_ram_t::middle_ram_t(std::shared_ptr<thread_pool_t> thread_pool,
options_t const *options)
: middle_t(std::move(thread_pool))
{
assert(options);
if (options->extra_attributes) {
m_store_options.untagged_nodes = true;
}
if (!options->flat_node_file.empty()) {
m_persistent_cache = std::make_shared<node_persistent_cache_t>(
options->flat_node_file, !options->append, options->droptemp);
}
}
void middle_ram_t::set_requirements(output_requirements const &requirements)
{
if (requirements.full_nodes) {
m_store_options.nodes = true;
}
if (requirements.full_ways) {
m_store_options.ways = true;
m_store_options.way_nodes = false;
}
if (requirements.full_relations) {
m_store_options.relations = true;
}
log_debug("Middle 'ram' options:");
log_debug(" locations: {}", m_store_options.locations);
log_debug(" locations_on_disk: {}", !!m_persistent_cache);
log_debug(" way_nodes: {}", m_store_options.way_nodes);
log_debug(" nodes: {}", m_store_options.nodes);
log_debug(" untagged_nodes: {}", m_store_options.untagged_nodes);
log_debug(" ways: {}", m_store_options.ways);
log_debug(" relations: {}", m_store_options.relations);
}
void middle_ram_t::stop()
{
assert(m_middle_state == middle_state::done);
constexpr auto MBYTE = 1024 * 1024;
if (m_persistent_cache) {
log_debug("Middle 'ram': Node locations on disk: size={} bytes={}M",
m_persistent_cache->size(),
m_persistent_cache->used_memory() / MBYTE);
} else {
log_debug("Middle 'ram': Node locations in memory: size={} bytes={}M",
m_node_locations.size(),
m_node_locations.used_memory() / MBYTE);
}
log_debug("Middle 'ram': Way nodes data: size={} capacity={} bytes={}M",
m_way_nodes_data.size(), m_way_nodes_data.capacity(),
m_way_nodes_data.capacity() / MBYTE);
log_debug("Middle 'ram': Way nodes index: size={} capacity={} bytes={}M",
m_way_nodes_index.size(), m_way_nodes_index.capacity(),
m_way_nodes_index.used_memory() / MBYTE);
log_debug("Middle 'ram': Object data: size={} capacity={} bytes={}M",
m_object_buffer.committed(), m_object_buffer.capacity(),
m_object_buffer.capacity() / MBYTE);
std::size_t index_size = 0;
std::size_t index_capacity = 0;
std::size_t index_mem = 0;
for (auto const &index : m_object_index) {
index_size += index.size();
index_capacity += index.capacity();
index_mem += index.used_memory();
}
log_debug("Middle 'ram': Object indexes: size={} capacity={} bytes={}M",
index_size, index_capacity, index_mem / MBYTE);
log_debug("Middle 'ram': Memory used overall: {}MBytes",
(m_node_locations.used_memory() + m_way_nodes_data.capacity() +
m_way_nodes_index.used_memory() + m_object_buffer.capacity() +
index_mem) /
MBYTE);
m_node_locations.clear();
m_way_nodes_index.clear();
m_way_nodes_data.clear();
m_way_nodes_data.shrink_to_fit();
m_object_buffer = osmium::memory::Buffer{};
for (auto &index : m_object_index) {
index.clear();
}
}
void middle_ram_t::store_object(osmium::OSMObject const &object)
{
auto const offset = m_object_buffer.committed();
m_object_buffer.add_item(object);
m_object_buffer.commit();
m_object_index(object.type()).add(object.id(), offset);
}
bool middle_ram_t::get_object(osmium::item_type type, osmid_t id,
osmium::memory::Buffer *buffer) const
{
assert(buffer);
auto const offset = m_object_index(type).get(id);
if (offset == ordered_index_t::not_found_value()) {
return false;
}
buffer->add_item(m_object_buffer.get<osmium::memory::Item>(offset));
buffer->commit();
return true;
}
void middle_ram_t::node(osmium::Node const &node)
{
assert(m_middle_state == middle_state::node);
assert(node.visible());
if (m_store_options.locations) {
if (m_persistent_cache) {
m_persistent_cache->set(node.id(), node.location());
} else {
m_node_locations.set(node.id(), node.location());
}
}
if (m_store_options.nodes &&
(!node.tags().empty() || m_store_options.untagged_nodes)) {
store_object(node);
}
}
void middle_ram_t::way(osmium::Way const &way)
{
assert(m_middle_state == middle_state::way);
assert(way.visible());
if (m_store_options.way_nodes) {
auto const offset = m_way_nodes_data.size();
add_delta_encoded_way_node_list(&m_way_nodes_data, way.nodes());
m_way_nodes_index.add(way.id(), offset);
}
if (m_store_options.ways) {
store_object(way);
}
}
void middle_ram_t::relation(osmium::Relation const &relation)
{
assert(m_middle_state == middle_state::relation);
assert(relation.visible());
if (m_store_options.relations) {
store_object(relation);
}
}
void middle_ram_t::after_nodes()
{
assert(m_middle_state == middle_state::node);
#ifndef NDEBUG
m_middle_state = middle_state::way;
#endif
if (!m_persistent_cache) {
m_node_locations.log_stats();
}
}
osmium::Location middle_ram_t::get_node_location(osmid_t id) const
{
return m_node_locations.get(id);
}
std::size_t middle_ram_t::nodes_get_list(osmium::WayNodeList *nodes) const
{
assert(nodes);
std::size_t count = 0;
if (m_store_options.locations) {
if (m_persistent_cache) {
for (auto &nr : *nodes) {
nr.set_location(m_persistent_cache->get(nr.ref()));
if (nr.location().valid()) {
++count;
}
}
} else {
for (auto &nr : *nodes) {
nr.set_location(m_node_locations.get(nr.ref()));
if (nr.location().valid()) {
++count;
}
}
}
}
return count;
}
bool middle_ram_t::node_get(osmid_t id, osmium::memory::Buffer *buffer) const
{
assert(buffer);
if (m_store_options.nodes) {
auto const got_it = get_object(osmium::item_type::node, id, buffer);
if (got_it) {
return true;
}
}
if (m_store_options.locations) {
osmium::Location location{};
if (m_persistent_cache) {
location = m_persistent_cache->get(id);
}
if (!location.valid()) {
location = m_node_locations.get(id);
}
if (location.valid()) {
{
osmium::builder::NodeBuilder builder{*buffer};
builder.set_id(id);
builder.set_location(location);
}
buffer->commit();
return true;
}
}
return false;
}
bool middle_ram_t::way_get(osmid_t id, osmium::memory::Buffer *buffer) const
{
assert(buffer);
if (m_store_options.ways) {
return get_object(osmium::item_type::way, id, buffer);
}
return false;
}
std::size_t
middle_ram_t::rel_members_get(osmium::Relation const &rel,
osmium::memory::Buffer *buffer,
osmium::osm_entity_bits::type types) const
{
assert(buffer);
std::size_t count = 0;
for (auto const &member : rel.members()) {
auto const member_entity_type =
osmium::osm_entity_bits::from_item_type(member.type());
if ((member_entity_type & types) == 0) {
continue;
}
switch (member.type()) {
case osmium::item_type::node:
if (m_store_options.nodes) {
auto const offset = m_object_index.nodes().get(member.ref());
if (offset != ordered_index_t::not_found_value()) {
buffer->add_item(m_object_buffer.get<osmium::Node>(offset));
buffer->commit();
++count;
continue;
}
}
{
osmium::builder::NodeBuilder builder{*buffer};
builder.set_id(member.ref());
}
buffer->commit();
++count;
break;
case osmium::item_type::way:
if (m_store_options.ways) {
auto const offset = m_object_index.ways().get(member.ref());
if (offset != ordered_index_t::not_found_value()) {
buffer->add_item(m_object_buffer.get<osmium::Way>(offset));
buffer->commit();
++count;
}
} else if (m_store_options.way_nodes) {
auto const offset = m_way_nodes_index.get(member.ref());
if (offset != ordered_index_t::not_found_value()) {
osmium::builder::WayBuilder builder{*buffer};
builder.set_id(member.ref());
get_delta_encoded_way_nodes_list(m_way_nodes_data, offset,
&builder);
}
buffer->commit();
++count;
}
break;
default: // osmium::item_type::relation
if (m_store_options.relations) {
auto const offset =
m_object_index.relations().get(member.ref());
if (offset != ordered_index_t::not_found_value()) {
buffer->add_item(
m_object_buffer.get<osmium::Relation>(offset));
buffer->commit();
++count;
}
}
}
}
return count;
}
bool middle_ram_t::relation_get(osmid_t id,
osmium::memory::Buffer *buffer) const
{
assert(buffer);
if (m_store_options.relations) {
return get_object(osmium::item_type::relation, id, buffer);
}
return false;
}
std::shared_ptr<middle_query_t> middle_ram_t::get_query_instance()
{
return shared_from_this();
}
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