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473 lines (414 loc) · 14.3 KB
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/**
* SPDX-License-Identifier: GPL-2.0-or-later
*
* This file is part of osm2pgsql (https://osm2pgsql.org/).
*
* Copyright (C) 2006-2021 by the osm2pgsql developer community.
* For a full list of authors see the git log.
*/
/* Implements the mid-layer processing for osm2pgsql
* using several PostgreSQL tables
*
* This layer stores data read in from the planet.osm file
* and is then read by the backend processing code to
* emit the final geometry-enabled output formats
*/
#include <future>
#include <iostream>
#include <limits>
#include <memory>
#include <stdexcept>
#include <string>
#include <cassert>
#include <cerrno>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <unistd.h>
#include "expire-tiles.hpp"
#include "logging.hpp"
#include "middle.hpp"
#include "options.hpp"
#include "osmtypes.hpp"
#include "output-pgsql.hpp"
#include "pgsql.hpp"
#include "reprojection.hpp"
#include "taginfo-impl.hpp"
#include "tagtransform.hpp"
#include "util.hpp"
#include "wildcmp.hpp"
#include "wkb.hpp"
void output_pgsql_t::pgsql_out_way(osmium::Way const &way, taglist_t *tags,
bool polygon, bool roads)
{
if (polygon && way.is_closed()) {
auto wkb = m_builder.get_wkb_polygon(way);
if (!wkb.empty()) {
m_expire.from_wkb(wkb, way.id());
if (m_enable_way_area) {
auto const area =
m_options.reproject_area
? ewkb::parser_t(wkb).get_area<reprojection>(
m_options.projection.get())
: ewkb::parser_t(wkb)
.get_area<osmium::geom::IdentityProjection>();
util::double_to_buffer tmp{area};
tags->set("way_area", tmp.c_str());
}
m_tables[t_poly]->write_row(way.id(), *tags, wkb);
}
} else {
double const split_at =
m_options.projection->target_latlon() ? 1 : 100 * 1000;
for (auto const &wkb : m_builder.get_wkb_line(way.nodes(), split_at)) {
m_expire.from_wkb(wkb, way.id());
m_tables[t_line]->write_row(way.id(), *tags, wkb);
if (roads) {
m_tables[t_roads]->write_row(way.id(), *tags, wkb);
}
}
}
}
void output_pgsql_t::pending_way(osmid_t id)
{
// Try to fetch the way from the DB
m_buffer.clear();
if (middle().way_get(id, &m_buffer)) {
pgsql_delete_way_from_output(id);
taglist_t outtags;
bool polygon = false;
bool roads = false;
auto &way = m_buffer.get<osmium::Way>(0);
if (!m_tagtransform->filter_tags(way, &polygon, &roads, outtags)) {
auto nnodes = middle().nodes_get_list(&(way.nodes()));
if (nnodes > 1) {
pgsql_out_way(way, &outtags, polygon, roads);
return;
}
}
}
}
void output_pgsql_t::pending_relation(osmid_t id)
{
// Try to fetch the relation from the DB
// Note that we cannot use the global buffer here because
// we cannot keep a reference to the relation and an autogrow buffer
// might be relocated when more data is added.
m_rels_buffer.clear();
if (middle().relation_get(id, &m_rels_buffer)) {
pgsql_delete_relation_from_output(id);
auto const &rel = m_rels_buffer.get<osmium::Relation>(0);
pgsql_process_relation(rel);
}
}
void output_pgsql_t::sync()
{
for (auto const &t : m_tables) {
t->sync();
}
}
void output_pgsql_t::stop()
{
for (auto &t : m_tables) {
t->task_set(thread_pool().submit([&]() {
t->stop(m_options.slim && !m_options.droptemp,
m_options.enable_hstore_index, m_options.tblsmain_index);
}));
}
if (m_options.expire_tiles_zoom_min > 0) {
m_expire.output_and_destroy(m_options.expire_tiles_filename.c_str(),
m_options.expire_tiles_zoom_min);
}
}
void output_pgsql_t::wait()
{
for (auto &t : m_tables) {
t->task_wait();
}
}
void output_pgsql_t::node_add(osmium::Node const &node)
{
taglist_t outtags;
if (m_tagtransform->filter_tags(node, nullptr, nullptr, outtags)) {
return;
}
auto wkb = m_builder.get_wkb_node(node.location());
m_expire.from_wkb(wkb, node.id());
m_tables[t_point]->write_row(node.id(), outtags, wkb);
}
void output_pgsql_t::way_add(osmium::Way *way)
{
bool polygon = false;
bool roads = false;
taglist_t outtags;
/* Check whether the way is: (1) Exportable, (2) Maybe a polygon */
auto filter = m_tagtransform->filter_tags(*way, &polygon, &roads, outtags);
if (!filter) {
/* Get actual node data and generate output */
auto nnodes = middle().nodes_get_list(&(way->nodes()));
if (nnodes > 1) {
pgsql_out_way(*way, &outtags, polygon, roads);
}
}
}
// The roles of all available member ways of a relation are available in the
// Lua "filter_tags_relation_member" callback function. This function extracts
// the roles from all ways in the buffer and returns the list.
static rolelist_t get_rolelist(osmium::Relation const &rel,
osmium::memory::Buffer const &buffer)
{
rolelist_t roles;
auto it = buffer.select<osmium::Way>().cbegin();
auto const end = buffer.select<osmium::Way>().cend();
if (it == end) {
return roles;
}
for (auto const &member : rel.members()) {
if (member.type() == osmium::item_type::way &&
member.ref() == it->id()) {
roles.emplace_back(member.role());
++it;
if (it == end) {
break;
}
}
}
return roles;
}
/* This is the workhorse of pgsql_add_relation, split out because it is used as the callback for iterate relations */
void output_pgsql_t::pgsql_process_relation(osmium::Relation const &rel)
{
taglist_t prefiltered_tags;
if (m_tagtransform->filter_tags(rel, nullptr, nullptr, prefiltered_tags)) {
return;
}
m_buffer.clear();
auto const num_ways =
middle().rel_members_get(rel, &m_buffer, osmium::osm_entity_bits::way);
if (num_ways == 0) {
return;
}
bool roads = false;
bool make_polygon = false;
bool make_boundary = false;
taglist_t outtags;
rolelist_t xrole;
if (!m_options.tag_transform_script.empty()) {
xrole = get_rolelist(rel, m_buffer);
}
// If it's a route relation make_boundary and make_polygon will be false
// otherwise one or the other will be true.
if (m_tagtransform->filter_rel_member_tags(
prefiltered_tags, m_buffer, xrole, &make_boundary, &make_polygon,
&roads, outtags)) {
return;
}
for (auto &w : m_buffer.select<osmium::Way>()) {
middle().nodes_get_list(&(w.nodes()));
}
// linear features and boundaries
// Needs to be done before the polygon treatment below because
// for boundaries the way_area tag may be added.
if (!make_polygon) {
double const split_at =
m_options.projection->target_latlon() ? 1 : 100 * 1000;
auto wkbs = m_builder.get_wkb_multiline(m_buffer, split_at);
for (auto const &wkb : wkbs) {
m_expire.from_wkb(wkb, -rel.id());
m_tables[t_line]->write_row(-rel.id(), outtags, wkb);
if (roads) {
m_tables[t_roads]->write_row(-rel.id(), outtags, wkb);
}
}
}
// multipolygons and boundaries
if (make_boundary || make_polygon) {
auto wkbs = m_builder.get_wkb_multipolygon(rel, m_buffer,
m_options.enable_multi);
for (auto const &wkb : wkbs) {
m_expire.from_wkb(wkb, -rel.id());
if (m_enable_way_area) {
auto const area =
m_options.reproject_area
? ewkb::parser_t(wkb).get_area<reprojection>(
m_options.projection.get())
: ewkb::parser_t(wkb)
.get_area<osmium::geom::IdentityProjection>();
util::double_to_buffer tmp{area};
outtags.set("way_area", tmp.c_str());
}
m_tables[t_poly]->write_row(-rel.id(), outtags, wkb);
}
}
}
void output_pgsql_t::relation_add(osmium::Relation const &rel)
{
char const *const type = rel.tags()["type"];
/* Must have a type field or we ignore it */
if (!type) {
return;
}
/* Only a limited subset of type= is supported, ignore other */
if (std::strcmp(type, "route") != 0 &&
std::strcmp(type, "multipolygon") != 0 &&
std::strcmp(type, "boundary") != 0) {
return;
}
pgsql_process_relation(rel);
}
/* Delete is easy, just remove all traces of this object. We don't need to
* worry about finding objects that depend on it, since the same diff must
* contain the change for that also. */
void output_pgsql_t::node_delete(osmid_t osm_id)
{
if (m_expire.from_result(m_tables[t_point]->get_wkb(osm_id), osm_id) != 0) {
m_tables[t_point]->delete_row(osm_id);
}
}
/* Seperated out because we use it elsewhere */
void output_pgsql_t::pgsql_delete_way_from_output(osmid_t osm_id)
{
/* Optimisation: we only need this is slim mode */
if (!m_options.slim) {
return;
}
/* in droptemp mode we don't have indices and this takes ages. */
if (m_options.droptemp) {
return;
}
m_tables[t_roads]->delete_row(osm_id);
if (m_expire.from_result(m_tables[t_line]->get_wkb(osm_id), osm_id) != 0) {
m_tables[t_line]->delete_row(osm_id);
}
if (m_expire.from_result(m_tables[t_poly]->get_wkb(osm_id), osm_id) != 0) {
m_tables[t_poly]->delete_row(osm_id);
}
}
void output_pgsql_t::way_delete(osmid_t osm_id)
{
pgsql_delete_way_from_output(osm_id);
}
/* Relations are identified by using negative IDs */
void output_pgsql_t::pgsql_delete_relation_from_output(osmid_t osm_id)
{
m_tables[t_roads]->delete_row(-osm_id);
if (m_expire.from_result(m_tables[t_line]->get_wkb(-osm_id), -osm_id) !=
0) {
m_tables[t_line]->delete_row(-osm_id);
}
if (m_expire.from_result(m_tables[t_poly]->get_wkb(-osm_id), -osm_id) !=
0) {
m_tables[t_poly]->delete_row(-osm_id);
}
}
void output_pgsql_t::relation_delete(osmid_t osm_id)
{
pgsql_delete_relation_from_output(osm_id);
}
/* Modify is slightly trickier. The basic idea is we simply delete the
* object and create it with the new parameters. Then we need to mark the
* objects that depend on this one */
void output_pgsql_t::node_modify(osmium::Node const &node)
{
node_delete(node.id());
node_add(node);
}
void output_pgsql_t::way_modify(osmium::Way *way)
{
way_delete(way->id());
way_add(way);
}
void output_pgsql_t::relation_modify(osmium::Relation const &rel)
{
relation_delete(rel.id());
relation_add(rel);
}
void output_pgsql_t::start()
{
for (auto &t : m_tables) {
//setup the table in postgres
t->start(m_options.database_options.conninfo(),
m_options.tblsmain_data);
}
}
std::shared_ptr<output_t> output_pgsql_t::clone(
std::shared_ptr<middle_query_t> const &mid,
std::shared_ptr<db_copy_thread_t> const ©_thread) const
{
return std::shared_ptr<output_t>(
new output_pgsql_t{this, mid, copy_thread});
}
output_pgsql_t::output_pgsql_t(
std::shared_ptr<middle_query_t> const &mid,
std::shared_ptr<thread_pool_t> thread_pool, options_t const &o,
std::shared_ptr<db_copy_thread_t> const ©_thread)
: output_t(mid, std::move(thread_pool), o), m_builder(o.projection),
m_expire(o.expire_tiles_zoom, o.expire_tiles_max_bbox, o.projection),
m_buffer(32768, osmium::memory::Buffer::auto_grow::yes),
m_rels_buffer(1024, osmium::memory::Buffer::auto_grow::yes)
{
log_debug("Using projection SRS {} ({})", o.projection->target_srs(),
o.projection->target_desc());
export_list exlist;
m_enable_way_area = read_style_file(m_options.style, &exlist);
m_tagtransform = tagtransform_t::make_tagtransform(&m_options, exlist);
//for each table
for (size_t i = 0; i < t_MAX; ++i) {
//figure out the columns this table needs
columns_t columns = exlist.normal_columns(
(i == t_point) ? osmium::item_type::node : osmium::item_type::way);
//figure out what name we are using for this and what type
std::string name = m_options.prefix;
std::string type;
switch (i) {
case t_point:
name += "_point";
type = "POINT";
break;
case t_line:
name += "_line";
type = "LINESTRING";
break;
case t_poly:
name += "_polygon";
type =
"GEOMETRY"; // Actually POLGYON & MULTIPOLYGON but no way to limit to just these two
break;
case t_roads:
name += "_roads";
type = "LINESTRING";
break;
default:
std::abort(); // should never be here
}
m_tables[i] = std::make_unique<table_t>(
name, type, columns, m_options.hstore_columns,
m_options.projection->target_srs(), m_options.append,
m_options.hstore_mode, copy_thread, m_options.output_dbschema);
}
}
output_pgsql_t::output_pgsql_t(
output_pgsql_t const *other, std::shared_ptr<middle_query_t> const &mid,
std::shared_ptr<db_copy_thread_t> const ©_thread)
: output_t(mid, other->m_thread_pool, other->m_options),
m_tagtransform(other->m_tagtransform->clone()),
m_enable_way_area(other->m_enable_way_area), m_builder(m_options.projection),
m_expire(m_options.expire_tiles_zoom, m_options.expire_tiles_max_bbox,
m_options.projection),
m_buffer(1024, osmium::memory::Buffer::auto_grow::yes),
m_rels_buffer(1024, osmium::memory::Buffer::auto_grow::yes)
{
for (size_t i = 0; i < t_MAX; ++i) {
//copy constructor will just connect to the already there table
m_tables[i] =
std::make_unique<table_t>(*(other->m_tables[i].get()), copy_thread);
}
}
output_pgsql_t::~output_pgsql_t() = default;
void output_pgsql_t::merge_expire_trees(output_t *other)
{
auto *const opgsql = dynamic_cast<output_pgsql_t *>(other);
if (opgsql) {
m_expire.merge_and_destroy(opgsql->m_expire);
}
}