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middle-pgsql.cpp
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/* 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 "config.h"
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include <time.h>
#include <errno.h>
#ifdef HAVE_PTHREAD
#include <pthread.h>
#endif
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_MMAP
#include <sys/mman.h>
#ifndef MAP_ANONYMOUS
#ifdef MAP_ANON
#define MAP_ANONYMOUS MAP_ANON
#endif
#endif
#endif
#include <libpq-fe.h>
#include "osmtypes.hpp"
#include "middle-pgsql.hpp"
#include "output-pgsql.hpp"
#include "options.hpp"
#include "node-ram-cache.hpp"
#include "node-persistent-cache.hpp"
#include "pgsql.hpp"
#include "util.hpp"
#include <stdexcept>
#include <boost/format.hpp>
#include <boost/unordered_map.hpp>
struct progress_info {
time_t start;
time_t end;
int count;
int finished;
};
enum table_id {
t_node, t_way, t_rel
} ;
middle_pgsql_t::table_desc::table_desc(const char *name_,
const char *start_,
const char *create_,
const char *create_index_,
const char *prepare_,
const char *prepare_intarray_,
const char *copy_,
const char *analyze_,
const char *stop_,
const char *array_indexes_)
: name(name_),
start(start_),
create(create_),
create_index(create_index_),
prepare(prepare_),
prepare_intarray(prepare_intarray_),
copy(copy_),
analyze(analyze_),
stop(stop_),
array_indexes(array_indexes_),
copyMode(0),
transactionMode(0),
sql_conn(NULL)
{}
#define HELPER_STATE_UNINITIALIZED -1
#define HELPER_STATE_FORKED -2
#define HELPER_STATE_RUNNING 0
#define HELPER_STATE_FINISHED 1
#define HELPER_STATE_CONNECTED 2
#define HELPER_STATE_FAILED 3
namespace {
int pgsql_connect(std::vector<middle_pgsql_t::table_desc> &tables,
const struct options_t *options) {
const int num_tables = tables.size();
// We use a connection per table to enable the use of COPY */
for (int i=0; i<num_tables; i++) {
PGconn *sql_conn;
sql_conn = PQconnectdb(options->conninfo.c_str());
// Check to see that the backend connection was successfully made */
if (PQstatus(sql_conn) != CONNECTION_OK) {
throw std::runtime_error((boost::format("Connection to database failed: %1%")
% PQerrorMessage(sql_conn)).str());
}
tables[i].sql_conn = sql_conn;
pgsql_exec(sql_conn, PGRES_COMMAND_OK, "SET synchronous_commit TO off;");
if (tables[i].prepare) {
pgsql_exec(sql_conn, PGRES_COMMAND_OK, "%s", tables[i].prepare);
}
if (tables[i].prepare_intarray) {
pgsql_exec(sql_conn, PGRES_COMMAND_OK, "%s", tables[i].prepare_intarray);
}
}
return 0;
}
char *pgsql_store_nodes(const osmid_t *nds, const int& nd_count)
{
static char *buffer;
static int buflen;
char *ptr;
int i, first;
if( buflen <= nd_count * 10 )
{
buflen = ((nd_count * 10) | 4095) + 1; // Round up to next page */
buffer = (char *)realloc( buffer, buflen );
}
_restart:
ptr = buffer;
first = 1;
*ptr++ = '{';
for( i=0; i<nd_count; i++ )
{
if( !first ) *ptr++ = ',';
ptr += sprintf(ptr, "%" PRIdOSMID, nds[i] );
if( (ptr-buffer) > (buflen-20) ) // Almost overflowed? */
{
buflen <<= 1;
buffer = (char *)realloc( buffer, buflen );
goto _restart;
}
first = 0;
}
*ptr++ = '}';
*ptr++ = 0;
return buffer;
}
// Special escape routine for escaping strings in array constants: double quote, backslash,newline, tab*/
inline char *escape_tag( char *ptr, const char *in, const int& escape )
{
while( *in )
{
switch(*in)
{
case '"':
if( escape ) *ptr++ = '\\';
*ptr++ = '\\';
*ptr++ = '"';
break;
case '\\':
if( escape ) *ptr++ = '\\';
if( escape ) *ptr++ = '\\';
*ptr++ = '\\';
*ptr++ = '\\';
break;
case '\n':
if( escape ) *ptr++ = '\\';
*ptr++ = '\\';
*ptr++ = 'n';
break;
case '\r':
if( escape ) *ptr++ = '\\';
*ptr++ = '\\';
*ptr++ = 'r';
break;
case '\t':
if( escape ) *ptr++ = '\\';
*ptr++ = '\\';
*ptr++ = 't';
break;
default:
*ptr++ = *in;
break;
}
in++;
}
return ptr;
}
// escape means we return '\N' for copy mode, otherwise we return just NULL */
const char *pgsql_store_tags(const struct keyval *tags, const int& escape)
{
static char *buffer;
static int buflen;
char *ptr;
struct keyval *i;
int first;
int countlist = countList(tags);
if( countlist == 0 )
{
if( escape )
return "\\N";
else
return NULL;
}
if( buflen <= countlist * 24 ) // LE so 0 always matches */
{
buflen = ((countlist * 24) | 4095) + 1; // Round up to next page */
buffer = (char *)realloc( buffer, buflen );
}
_restart:
ptr = buffer;
first = 1;
*ptr++ = '{';
// The lists are circular, exit when we reach the head again */
for( i=tags->next; i->key; i = i->next )
{
int maxlen = (strlen(i->key) + strlen(i->value)) * 4;
if( (ptr+maxlen-buffer) > (buflen-20) ) // Almost overflowed? */
{
buflen <<= 1;
buffer = (char *)realloc( buffer, buflen );
goto _restart;
}
if( !first ) *ptr++ = ',';
*ptr++ = '"';
ptr = escape_tag( ptr, i->key, escape );
*ptr++ = '"';
*ptr++ = ',';
*ptr++ = '"';
ptr = escape_tag( ptr, i->value, escape );
*ptr++ = '"';
first=0;
}
*ptr++ = '}';
*ptr++ = 0;
return buffer;
}
// Decodes a portion of an array literal from postgres */
// Argument should point to beginning of literal, on return points to delimiter */
inline const char *decode_upto( const char *src, char *dst )
{
int quoted = (*src == '"');
if( quoted ) src++;
while( quoted ? (*src != '"') : (*src != ',' && *src != '}') )
{
if( *src == '\\' )
{
switch( src[1] )
{
case 'n': *dst++ = '\n'; break;
case 't': *dst++ = '\t'; break;
default: *dst++ = src[1]; break;
}
src+=2;
}
else
*dst++ = *src++;
}
if( quoted ) src++;
*dst = 0;
return src;
}
void pgsql_parse_tags( const char *string, struct keyval *tags )
{
char key[1024];
char val[1024];
if( *string == '\0' )
return;
if( *string++ != '{' )
return;
while( *string != '}' )
{
string = decode_upto( string, key );
// String points to the comma */
string++;
string = decode_upto( string, val );
// String points to the comma or closing '}' */
addItem( tags, key, val, 0 );
if( *string == ',' )
string++;
}
}
// Parses an array of integers */
void pgsql_parse_nodes(const char *src, osmid_t *nds, const int& nd_count )
{
int count = 0;
const char *string = src;
if( *string++ != '{' )
return;
while( *string != '}' )
{
char *ptr;
nds[count] = strtoosmid( string, &ptr, 10 );
string = ptr;
if( *string == ',' )
string++;
count++;
}
if( count != nd_count )
{
fprintf( stderr, "parse_nodes problem: '%s' expected %d got %d\n", src, nd_count, count );
util::exit_nicely();
}
}
int pgsql_endCopy( struct middle_pgsql_t::table_desc *table)
{
PGresult *res;
PGconn *sql_conn;
int stop;
// Terminate any pending COPY */
if (table->copyMode) {
sql_conn = table->sql_conn;
stop = PQputCopyEnd(sql_conn, NULL);
if (stop != 1) {
fprintf(stderr, "COPY_END for %s failed: %s\n", table->copy, PQerrorMessage(sql_conn));
util::exit_nicely();
}
res = PQgetResult(sql_conn);
if (PQresultStatus(res) != PGRES_COMMAND_OK) {
fprintf(stderr, "COPY_END for %s failed: %s\n", table->copy, PQerrorMessage(sql_conn));
PQclear(res);
util::exit_nicely();
}
PQclear(res);
table->copyMode = 0;
}
return 0;
}
} // anonymous namespace
int middle_pgsql_t::local_nodes_set(const osmid_t& id, const double& lat, const double& lon, const struct keyval *tags)
{
// Four params: id, lat, lon, tags */
const char *paramValues[4];
char *buffer;
if( node_table->copyMode )
{
const char *tag_buf = pgsql_store_tags(tags,1);
int length = strlen(tag_buf) + 64;
buffer = (char *)alloca( length );
#ifdef FIXED_POINT
if( snprintf( buffer, length, "%" PRIdOSMID "\t%d\t%d\t%s\n", id, util::double_to_fix(lat, out_options->scale), util::double_to_fix(lon, out_options->scale), tag_buf ) > (length-10) )
{ fprintf( stderr, "buffer overflow node id %" PRIdOSMID "\n", id); return 1; }
#else
if( snprintf( buffer, length, "%" PRIdOSMID "\t%.10f\t%.10f\t%s\n", id, lat, lon, tag_buf ) > (length-10) )
{ fprintf( stderr, "buffer overflow node id %" PRIdOSMID "\n", id); return 1; }
#endif
pgsql_CopyData(__FUNCTION__, node_table->sql_conn, buffer);
return 0;
}
buffer = (char *)alloca(64);
char *ptr = buffer;
paramValues[0] = ptr;
ptr += sprintf( ptr, "%" PRIdOSMID, id ) + 1;
paramValues[1] = ptr;
#ifdef FIXED_POINT
ptr += sprintf( ptr, "%d", util::double_to_fix(lat, out_options->scale) ) + 1;
paramValues[2] = ptr;
sprintf( ptr, "%d", util::double_to_fix(lon, out_options->scale) );
#else
ptr += sprintf( ptr, "%.10f", lat ) + 1;
paramValues[2] = ptr;
sprintf( ptr, "%.10f", lon );
#endif
paramValues[3] = pgsql_store_tags(tags,0);
pgsql_execPrepared(node_table->sql_conn, "insert_node", 4, (const char * const *)paramValues, PGRES_COMMAND_OK);
return 0;
}
// This should be made more efficient by using an IN(ARRAY[]) construct */
int middle_pgsql_t::local_nodes_get_list(struct osmNode *nodes, const osmid_t *ndids, const int& nd_count) const
{
char tmp[16];
char *tmp2;
int count, countDB, countPG, i,j;
char const *paramValues[1];
PGresult *res;
PGconn *sql_conn = node_table->sql_conn;
count = 0; countDB = 0;
tmp2 = (char *)malloc(sizeof(char)*nd_count*16);
if (tmp2 == NULL) return 0; //failed to allocate memory, return */
// create a list of ids in tmp2 to query the database */
sprintf(tmp2, "{");
for( i=0; i<nd_count; i++ ) {
// Check cache first */
if( cache->get( &nodes[i], ndids[i]) == 0 ) {
count++;
continue;
}
countDB++;
// Mark nodes as needing to be fetched from the DB */
nodes[i].lat = NAN;
nodes[i].lon = NAN;
snprintf(tmp, sizeof(tmp), "%" PRIdOSMID ",", ndids[i]);
strncat(tmp2, tmp, sizeof(char)*(nd_count*16 - 2));
}
tmp2[strlen(tmp2) - 1] = '}'; // replace last , with } to complete list of ids*/
if (countDB == 0) {
free(tmp2);
return count; // All ids where in cache, so nothing more to do */
}
pgsql_endCopy(node_table);
paramValues[0] = tmp2;
res = pgsql_execPrepared(sql_conn, "get_node_list", 1, paramValues, PGRES_TUPLES_OK);
countPG = PQntuples(res);
//store the pg results in a hashmap and telling it how many we expect
boost::unordered_map<osmid_t, osmNode> pg_nodes(countPG);
for (i = 0; i < countPG; i++) {
osmid_t id = strtoosmid(PQgetvalue(res, i, 0), NULL, 10);
osmNode node;
#ifdef FIXED_POINT
node.lat = util::fix_to_double(strtol(PQgetvalue(res, i, 1), NULL, 10), out_options->scale);
node.lon = util::fix_to_double(strtol(PQgetvalue(res, i, 2), NULL, 10), out_options->scale);
#else
node.lat = strtod(PQgetvalue(res, i, 1), NULL);
node.lon = strtod(PQgetvalue(res, i, 2), NULL);
#endif
pg_nodes.emplace(std::make_pair<osmid_t, osmNode>(id, node));
}
//copy the nodes back out of the hashmap to the output
for(i = 0; i < nd_count; ++i){
//if we can find a matching id
boost::unordered_map<osmid_t, osmNode>::iterator found = pg_nodes.find(ndids[i]);
if(found != pg_nodes.end()) {
nodes[i] = boost::move(found->second); //this trashes whats in the hashmap but who cares
count++;
}
}
// If some of the nodes in the way don't exist, the returning list has holes.
// As the rest of the code expects a continuous list, it needs to be re-compacted */
if (count != nd_count) {
j = 0;
for (i = 0; i < nd_count; i++) {
if ( !isnan(nodes[i].lat)) {
nodes[j] = nodes[i];
j++;
}
}
}
PQclear(res);
free(tmp2);
return count;
}
void middle_pgsql_t::cleanup(void)
{
int i;
for (i=0; i<num_tables; i++) {
if (tables[i].sql_conn) {
PQfinish(tables[i].sql_conn);
tables[i].sql_conn = NULL;
}
}
}
int middle_pgsql_t::nodes_set(osmid_t id, double lat, double lon, struct keyval *tags) {
cache->set( id, lat, lon, tags );
return (out_options->flat_node_cache_enabled) ? persistent_cache->set(id, lat, lon) : local_nodes_set(id, lat, lon, tags);
}
int middle_pgsql_t::nodes_get_list(struct osmNode *nodes, const osmid_t *ndids, int nd_count) const
{
return (out_options->flat_node_cache_enabled) ? persistent_cache->get_list(nodes, ndids, nd_count) : local_nodes_get_list(nodes, ndids, nd_count);
}
int middle_pgsql_t::local_nodes_delete(osmid_t osm_id)
{
char const *paramValues[1];
char buffer[64];
// Make sure we're out of copy mode */
pgsql_endCopy( node_table );
sprintf( buffer, "%" PRIdOSMID, osm_id );
paramValues[0] = buffer;
pgsql_execPrepared(node_table->sql_conn, "delete_node", 1, paramValues, PGRES_COMMAND_OK );
return 0;
}
int middle_pgsql_t::nodes_delete(osmid_t osm_id)
{
return ((out_options->flat_node_cache_enabled) ? persistent_cache->set(osm_id, NAN, NAN) : local_nodes_delete(osm_id));
}
int middle_pgsql_t::node_changed(osmid_t osm_id)
{
char const *paramValues[1];
char buffer[64];
// Make sure we're out of copy mode */
pgsql_endCopy( way_table );
pgsql_endCopy( rel_table );
sprintf( buffer, "%" PRIdOSMID, osm_id );
paramValues[0] = buffer;
//keep track of whatever ways and rels these nodes intersect
//TODO: dont need to stop the copy above since we are only reading?
PGresult* res = pgsql_execPrepared(way_table->sql_conn, "mark_ways_by_node", 1, paramValues, PGRES_TUPLES_OK );
for(int i = 0; i < PQntuples(res); ++i)
{
char *end;
osmid_t marked = strtoosmid(PQgetvalue(res, i, 0), &end, 10);
ways_pending_tracker->mark(marked);
}
PQclear(res);
//do the rels too
res = pgsql_execPrepared(rel_table->sql_conn, "mark_rels_by_node", 1, paramValues, PGRES_TUPLES_OK );
for(int i = 0; i < PQntuples(res); ++i)
{
char *end;
osmid_t marked = strtoosmid(PQgetvalue(res, i, 0), &end, 10);
rels_pending_tracker->mark(marked);
}
PQclear(res);
return 0;
}
int middle_pgsql_t::ways_set(osmid_t way_id, osmid_t *nds, int nd_count, struct keyval *tags)
{
// Three params: id, nodes, tags */
const char *paramValues[4];
char *buffer;
if( way_table->copyMode )
{
const char *tag_buf = pgsql_store_tags(tags,1);
char *node_buf = pgsql_store_nodes(nds, nd_count);
int length = strlen(tag_buf) + strlen(node_buf) + 64;
buffer = (char *)alloca(length);
if( snprintf( buffer, length, "%" PRIdOSMID "\t%s\t%s\n",
way_id, node_buf, tag_buf ) > (length-10) )
{ fprintf( stderr, "buffer overflow way id %" PRIdOSMID "\n", way_id); return 1; }
pgsql_CopyData(__FUNCTION__, way_table->sql_conn, buffer);
return 0;
}
buffer = (char *)alloca(64);
char *ptr = buffer;
paramValues[0] = ptr;
sprintf(ptr, "%" PRIdOSMID, way_id);
paramValues[1] = pgsql_store_nodes(nds, nd_count);
paramValues[2] = pgsql_store_tags(tags,0);
pgsql_execPrepared(way_table->sql_conn, "insert_way", 3, (const char * const *)paramValues, PGRES_COMMAND_OK);
return 0;
}
// Caller is responsible for freeing nodesptr & resetList(tags) */
int middle_pgsql_t::ways_get(osmid_t id, struct keyval *tags, struct osmNode **nodes_ptr, int *count_ptr) const
{
PGresult *res;
char tmp[16];
char const *paramValues[1];
PGconn *sql_conn = way_table->sql_conn;
int num_nodes;
osmid_t *list;
// Make sure we're out of copy mode */
pgsql_endCopy( way_table );
snprintf(tmp, sizeof(tmp), "%" PRIdOSMID, id);
paramValues[0] = tmp;
res = pgsql_execPrepared(sql_conn, "get_way", 1, paramValues, PGRES_TUPLES_OK);
if (PQntuples(res) != 1) {
PQclear(res);
return 1;
}
pgsql_parse_tags( PQgetvalue(res, 0, 1), tags );
num_nodes = strtol(PQgetvalue(res, 0, 2), NULL, 10);
list = (osmid_t *)alloca(sizeof(osmid_t)*num_nodes );
*nodes_ptr = (struct osmNode *)malloc(sizeof(struct osmNode) * num_nodes);
pgsql_parse_nodes( PQgetvalue(res, 0, 0), list, num_nodes);
*count_ptr = nodes_get_list(*nodes_ptr, list, num_nodes);
PQclear(res);
return 0;
}
int middle_pgsql_t::ways_get_list(const osmid_t *ids, int way_count, osmid_t *way_ids, struct keyval *tags, struct osmNode **nodes_ptr, int *count_ptr) const {
char tmp[16];
char *tmp2;
int count, countPG, i, j;
osmid_t *wayidspg;
char const *paramValues[1];
int num_nodes;
osmid_t *list;
PGresult *res;
PGconn *sql_conn = way_table->sql_conn;
if (way_count == 0) return 0;
tmp2 = (char *)malloc(sizeof(char)*way_count*16);
if (tmp2 == NULL) return 0; //failed to allocate memory, return */
// create a list of ids in tmp2 to query the database */
sprintf(tmp2, "{");
for( i=0; i<way_count; i++ ) {
snprintf(tmp, sizeof(tmp), "%" PRIdOSMID ",", ids[i]);
strncat(tmp2,tmp, sizeof(char)*(way_count*16 - 2));
}
tmp2[strlen(tmp2) - 1] = '}'; // replace last , with } to complete list of ids*/
pgsql_endCopy(way_table);
paramValues[0] = tmp2;
res = pgsql_execPrepared(sql_conn, "get_way_list", 1, paramValues, PGRES_TUPLES_OK);
countPG = PQntuples(res);
wayidspg = (osmid_t *)malloc(sizeof(osmid_t)*countPG);
if (wayidspg == NULL) return 0; //failed to allocate memory, return */
for (i = 0; i < countPG; i++) {
wayidspg[i] = strtoosmid(PQgetvalue(res, i, 0), NULL, 10);
}
// Match the list of ways coming from postgres in a different order
// back to the list of ways given by the caller */
count = 0;
initList(&(tags[count]));
for (i = 0; i < way_count; i++) {
for (j = 0; j < countPG; j++) {
if (ids[i] == wayidspg[j]) {
way_ids[count] = ids[i];
pgsql_parse_tags( PQgetvalue(res, j, 2), &(tags[count]) );
num_nodes = strtol(PQgetvalue(res, j, 3), NULL, 10);
list = (osmid_t *)alloca(sizeof(osmid_t)*num_nodes );
nodes_ptr[count] = (struct osmNode *)malloc(sizeof(struct osmNode) * num_nodes);
pgsql_parse_nodes( PQgetvalue(res, j, 1), list, num_nodes);
count_ptr[count] = nodes_get_list(nodes_ptr[count], list, num_nodes);
count++;
initList(&(tags[count]));
}
}
}
PQclear(res);
free(tmp2);
free(wayidspg);
return count;
}
int middle_pgsql_t::ways_delete(osmid_t osm_id)
{
char const *paramValues[1];
char buffer[64];
// Make sure we're out of copy mode */
pgsql_endCopy( way_table );
sprintf( buffer, "%" PRIdOSMID, osm_id );
paramValues[0] = buffer;
pgsql_execPrepared(way_table->sql_conn, "delete_way", 1, paramValues, PGRES_COMMAND_OK );
return 0;
}
void middle_pgsql_t::iterate_ways(middle_t::pending_processor& pf)
{
time_t start, end;
time(&start);
fprintf(stderr, "\nGoing over pending ways...\n");
// Make sure we're out of copy mode */
pgsql_endCopy( way_table );
if (out_options->flat_node_cache_enabled) persistent_cache.reset();
if (out_options->flat_node_cache_enabled) persistent_cache.reset(new node_persistent_cache(out_options,1,cache)); /* at this point we always want to be in append mode, to not delete and recreate the node cache file */
// enqueue the jobs
osmid_t id;
while(id_tracker::is_valid(id = ways_pending_tracker->pop_mark()))
{
pf.enqueue(id);
}
size_t pending_count = pf.size();
fprintf(stderr, "\t%zu ways are pending\n", pending_count);
fprintf(stderr, "\nUsing %i helper-processes\n", pf.thread_count());
//let the threads work on them
pf.process_ways();
time(&end);
fprintf(stderr, "\rProcess %i finished processing %i ways in %i sec\n", 0, pending_count, (int)(end - start));
fprintf(stderr, "\nAll child processes exited\n");
fprintf(stderr, "\n");
time(&end);
if (end - start > 0)
fprintf(stderr, "%zu Pending ways took %ds at a rate of %.2f/s\n", pending_count, (int)(end - start),
((double)pending_count / (double)(end - start)));
}
int middle_pgsql_t::way_changed(osmid_t osm_id)
{
char const *paramValues[1];
char buffer[64];
// Make sure we're out of copy mode */
pgsql_endCopy( rel_table );
sprintf( buffer, "%" PRIdOSMID, osm_id );
paramValues[0] = buffer;
//keep track of whatever rels this way intersects
//TODO: dont need to stop the copy above since we are only reading?
PGresult* res = pgsql_execPrepared(rel_table->sql_conn, "mark_rels_by_way", 1, paramValues, PGRES_TUPLES_OK );
for(int i = 0; i < PQntuples(res); ++i)
{
char *end;
osmid_t marked = strtoosmid(PQgetvalue(res, i, 0), &end, 10);
rels_pending_tracker->mark(marked);
}
PQclear(res);
return 0;
}
int middle_pgsql_t::relations_set(osmid_t id, struct member *members, int member_count, struct keyval *tags)
{
// Params: id, way_off, rel_off, parts, members, tags */
const char *paramValues[6];
char *buffer;
int i;
struct keyval member_list;
char buf[64];
osmid_t node_parts[member_count],
way_parts[member_count],
rel_parts[member_count];
int node_count = 0, way_count = 0, rel_count = 0;
osmid_t all_parts[member_count];
int all_count = 0;
initList( &member_list );
for( i=0; i<member_count; i++ )
{
char tag = 0;
switch( members[i].type )
{
case OSMTYPE_NODE: node_parts[node_count++] = members[i].id; tag = 'n'; break;
case OSMTYPE_WAY: way_parts[way_count++] = members[i].id; tag = 'w'; break;
case OSMTYPE_RELATION: rel_parts[rel_count++] = members[i].id; tag = 'r'; break;
default: fprintf( stderr, "Internal error: Unknown member type %d\n", members[i].type ); util::exit_nicely();
}
sprintf( buf, "%c%" PRIdOSMID, tag, members[i].id );
addItem( &member_list, buf, members[i].role, 0 );
}
memcpy( all_parts+all_count, node_parts, node_count*sizeof(osmid_t) ); all_count+=node_count;
memcpy( all_parts+all_count, way_parts, way_count*sizeof(osmid_t) ); all_count+=way_count;
memcpy( all_parts+all_count, rel_parts, rel_count*sizeof(osmid_t) ); all_count+=rel_count;
if( rel_table->copyMode )
{
char *tag_buf = strdup(pgsql_store_tags(tags,1));
const char *member_buf = pgsql_store_tags(&member_list,1);
char *parts_buf = pgsql_store_nodes(all_parts, all_count);
int length = strlen(member_buf) + strlen(tag_buf) + strlen(parts_buf) + 64;
buffer = (char *)alloca(length);
if( snprintf( buffer, length, "%" PRIdOSMID "\t%d\t%d\t%s\t%s\t%s\n",
id, node_count, node_count+way_count, parts_buf, member_buf, tag_buf ) > (length-10) )
{ fprintf( stderr, "buffer overflow relation id %" PRIdOSMID "\n", id); return 1; }
free(tag_buf);
resetList(&member_list);
pgsql_CopyData(__FUNCTION__, rel_table->sql_conn, buffer);
return 0;
}
buffer = (char *)alloca(64);
char *ptr = buffer;
paramValues[0] = ptr;
ptr += sprintf(ptr, "%" PRIdOSMID, id ) + 1;
paramValues[1] = ptr;
ptr += sprintf(ptr, "%d", node_count ) + 1;
paramValues[2] = ptr;
sprintf( ptr, "%d", node_count+way_count );
paramValues[3] = pgsql_store_nodes(all_parts, all_count);
paramValues[4] = pgsql_store_tags(&member_list,0);
if( paramValues[4] )
paramValues[4] = strdup(paramValues[4]);
paramValues[5] = pgsql_store_tags(tags,0);
pgsql_execPrepared(rel_table->sql_conn, "insert_rel", 6, (const char * const *)paramValues, PGRES_COMMAND_OK);
if( paramValues[4] )
free((void *)paramValues[4]);
resetList(&member_list);
return 0;
}
// Caller is responsible for freeing members & resetList(tags) */
int middle_pgsql_t::relations_get(osmid_t id, struct member **members, int *member_count, struct keyval *tags) const
{
PGresult *res;
char tmp[16];
char const *paramValues[1];
PGconn *sql_conn = rel_table->sql_conn;
struct keyval member_temp;
char tag;
int num_members;
struct member *list;
int i=0;
struct keyval *item;
// Make sure we're out of copy mode */
pgsql_endCopy( rel_table );
snprintf(tmp, sizeof(tmp), "%" PRIdOSMID, id);
paramValues[0] = tmp;
res = pgsql_execPrepared(sql_conn, "get_rel", 1, paramValues, PGRES_TUPLES_OK);
// Fields are: members, tags, member_count */
if (PQntuples(res) != 1) {
PQclear(res);
return 1;
}
pgsql_parse_tags( PQgetvalue(res, 0, 1), tags );
initList(&member_temp);
pgsql_parse_tags( PQgetvalue(res, 0, 0), &member_temp );
num_members = strtol(PQgetvalue(res, 0, 2), NULL, 10);
list = (struct member *)malloc( sizeof(struct member)*num_members );
while( (item = popItem(&member_temp)) )
{
if( i >= num_members )
{
fprintf(stderr, "Unexpected member_count reading relation %" PRIdOSMID "\n", id);
util::exit_nicely();
}
tag = item->key[0];
list[i].type = (tag == 'n')?OSMTYPE_NODE:(tag == 'w')?OSMTYPE_WAY:(tag == 'r')?OSMTYPE_RELATION:((OsmType)-1);
list[i].id = strtoosmid(item->key+1, NULL, 10 );
list[i].role = strdup( item->value );
freeItem(item);
i++;
}
*members = list;
*member_count = num_members;
PQclear(res);
return 0;
}
int middle_pgsql_t::relations_delete(osmid_t osm_id)
{
char const *paramValues[1];
char buffer[64];
// Make sure we're out of copy mode */
pgsql_endCopy( way_table );
pgsql_endCopy( rel_table );
sprintf( buffer, "%" PRIdOSMID, osm_id );
paramValues[0] = buffer;
pgsql_execPrepared(rel_table->sql_conn, "delete_rel", 1, paramValues, PGRES_COMMAND_OK );
//keep track of whatever ways this relation interesects
//TODO: dont need to stop the copy above since we are only reading?
PGresult* res = pgsql_execPrepared(way_table->sql_conn, "mark_ways_by_rel", 1, paramValues, PGRES_TUPLES_OK );
for(int i = 0; i < PQntuples(res); ++i)
{
char *end;
osmid_t marked = strtoosmid(PQgetvalue(res, i, 0), &end, 10);
ways_pending_tracker->mark(marked);
}
PQclear(res);
return 0;
}
void middle_pgsql_t::iterate_relations(middle_t::cb_func &callback)
{
// The flag we pass to indicate that the way in question might exist already in the database */
int exists = Append;
time_t start, end;
time(&start);
fprintf(stderr, "\nGoing over pending relations...\n");
// Make sure we're out of copy mode */
pgsql_endCopy( rel_table );
if (out_options->flat_node_cache_enabled) persistent_cache.reset();
size_t pending_rels = rels_pending_tracker->size();
fprintf(stderr, "\t%zu relations are pending\n", pending_rels);
/**
* TODO
* To speed up processing of pending rels, fork noProcs worker processes
* each of which independently goes through an equal subset of the pending rels array
*/
fprintf(stderr, "\nUsing %i helper-processes\n", 1);
if (out_options->flat_node_cache_enabled) persistent_cache.reset(new node_persistent_cache(out_options, 1, cache)); // at this point we always want to be in append mode, to not delete and recreate the node cache file */
//in memory processing pending rels
osmid_t id;
int count = 0;
while((id = rels_pending_tracker->pop_mark()) != std::numeric_limits<osmid_t>::max())
{
//progress update
if (count++ %10 == 0) {
time(&end);
fprintf(stderr, "\rprocessing relation (%d) at %.2f/s", count,
end > start ? ((double)count / (double)(end - start)) : 0);
}
//send it to the backends
callback(id, exists);
}
time(&end);
fprintf(stderr, "\rProcess %i finished processing %i relations in %i sec\n", 0, count, (int)(end - start));
time(&end);
if (end - start > 0)
fprintf(stderr, "%zu Pending relations took %ds at a rate of %.2f/s\n", pending_rels, (int)(end - start), ((double)pending_rels / (double)(end - start)));
fprintf(stderr, "\n");
}
int middle_pgsql_t::relation_changed(osmid_t osm_id)
{
char const *paramValues[1];
char buffer[64];
// Make sure we're out of copy mode */
pgsql_endCopy( rel_table );
sprintf( buffer, "%" PRIdOSMID, osm_id );
paramValues[0] = buffer;
//keep track of whatever ways and rels these nodes intersect
//TODO: dont need to stop the copy above since we are only reading?
//TODO: can we just mark the id without querying? the where clause seems intersect reltable.parts with the id
PGresult* res = pgsql_execPrepared(rel_table->sql_conn, "mark_rels", 1, paramValues, PGRES_TUPLES_OK );
for(int i = 0; i < PQntuples(res); ++i)
{
char *end;
osmid_t marked = strtoosmid(PQgetvalue(res, i, 0), &end, 10);
rels_pending_tracker->mark(marked);