nominatim/index.c

   1 /*
   2 */
   3
   4 #include <stdio.h>
   5 #include <unistd.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <assert.h>
   9 #include <pthread.h>
  10 #include <time.h>
  11 #include <stdint.h>
  12
  13 #include <libpq-fe.h>
  14
  15 #include "nominatim.h"
  16 #include "index.h"
  17 #include "export.h"
  18 #include "postgresql.h"
  19
  20 extern int verbose;
  21
  22 void nominatim_index(int rank_min, int rank_max, int num_threads, const char *conninfo, const char *structuredoutputfile)
  23 {
  24         struct index_thread_data * thread_data;
  25         pthread_mutex_t count_mutex = PTHREAD_MUTEX_INITIALIZER;
  26         int tuples, count, sleepcount;
  27
  28         time_t rankStartTime;
  29         int rankTotalTuples;
  30         int rankCountTuples;
  31         float rankPerSecond;
  32
  33         PGconn *conn;
  34         PGresult * res;
  35         PGresult * resSectors;
  36         PGresult * resPlaces;
  37
  38         int rank;
  39         int i;
  40         int iSector;
  41
  42     const char *paramValues[2];
  43     int         paramLengths[2];
  44     int         paramFormats[2];
  45     uint32_t    paramRank;
  46     uint32_t    paramSector;
  47     uint32_t    sector;
  48
  49     xmlTextWriterPtr writer;
  50         pthread_mutex_t writer_mutex = PTHREAD_MUTEX_INITIALIZER;
  51
  52     Oid pg_prepare_params[2];
  53
  54     conn = PQconnectdb(conninfo);
  55     if (PQstatus(conn) != CONNECTION_OK) {
  56         fprintf(stderr, "Connection to database failed: %s\n", PQerrorMessage(conn));
  57         exit(EXIT_FAILURE);
  58     }
  59
  60     pg_prepare_params[0] = PG_OID_INT4;
  61     res = PQprepare(conn, "index_sectors",
  62         "select geometry_sector,count(*) from placex where rank_search = $1 and indexed_status > 0 group by geometry_sector order by geometry_sector",
  63         1, pg_prepare_params);
  64     if (PQresultStatus(res) != PGRES_COMMAND_OK)
  65     {
  66         fprintf(stderr, "Failed preparing index_sectors: %s\n", PQerrorMessage(conn));
  67         exit(EXIT_FAILURE);
  68     }
  69     PQclear(res);
  70
  71     pg_prepare_params[0] = PG_OID_INT4;
  72     res = PQprepare(conn, "index_nosectors",
  73         "select 0::integer,count(*) from placex where rank_search = $1 and indexed_status > 0",
  74         1, pg_prepare_params);
  75     if (PQresultStatus(res) != PGRES_COMMAND_OK)
  76     {
  77         fprintf(stderr, "Failed preparing index_sectors: %s\n", PQerrorMessage(conn));
  78         exit(EXIT_FAILURE);
  79     }
  80     PQclear(res);
  81
  82     pg_prepare_params[0] = PG_OID_INT4;
  83     pg_prepare_params[1] = PG_OID_INT4;
  84     res = PQprepare(conn, "index_sector_places",
  85         "select place_id from placex where rank_search = $1 and geometry_sector = $2 and indexed_status > 0",
  86         2, pg_prepare_params);
  87     if (PQresultStatus(res) != PGRES_COMMAND_OK)
  88     {
  89         fprintf(stderr, "Failed preparing index_sector_places: %s\n", PQerrorMessage(conn));
  90         exit(EXIT_FAILURE);
  91     }
  92     PQclear(res);
  93
  94     pg_prepare_params[0] = PG_OID_INT4;
  95     res = PQprepare(conn, "index_nosector_places",
  96         "select place_id from placex where rank_search = $1 and indexed_status > 0 order by geometry_sector",
  97         1, pg_prepare_params);
  98     if (PQresultStatus(res) != PGRES_COMMAND_OK)
  99     {
 100         fprintf(stderr, "Failed preparing index_nosector_places: %s\n", PQerrorMessage(conn));
 101         exit(EXIT_FAILURE);
 102     }
 103     PQclear(res);
 104
 105     // Build the data for each thread
 106     thread_data = (struct index_thread_data *)malloc(sizeof(struct index_thread_data)*num_threads);
 107         for (i = 0; i < num_threads; i++)
 108         {
 109                 thread_data[i].conn = PQconnectdb(conninfo);
 110             if (PQstatus(thread_data[i].conn) != CONNECTION_OK) {
 111                 fprintf(stderr, "Connection to database failed: %s\n", PQerrorMessage(thread_data[i].conn));
 112                 exit(EXIT_FAILURE);
 113             }
 114
 115             pg_prepare_params[0] = PG_OID_INT4;
 116             res = PQprepare(thread_data[i].conn, "index_placex",
 117                 "update placex set indexed_status = 0 where place_id = $1",
 118                 1, pg_prepare_params);
 119             if (PQresultStatus(res) != PGRES_COMMAND_OK)
 120             {
 121                 fprintf(stderr, "Failed preparing index_placex: %s\n", PQerrorMessage(conn));
 122                 exit(EXIT_FAILURE);
 123             }
 124             PQclear(res);
 125
 126             nominatim_exportCreatePreparedQueries(thread_data[i].conn);
 127         }
 128
 129         // Create the output file
 130         writer = NULL;
 131         if (structuredoutputfile)
 132         {
 133                 writer = nominatim_exportXMLStart(structuredoutputfile);
 134         }
 135
 136     fprintf(stderr, "Starting indexing rank (%i > %i ) using %i treads\n", rank_min, rank_max, num_threads);
 137
 138     for (rank = rank_min; rank <= rank_max; rank++)
 139     {
 140         printf("Starting rank %d\n", rank);
 141         rankStartTime = time(0);
 142         rankCountTuples = 0;
 143         rankPerSecond = 0;
 144
 145         paramRank = PGint32(rank);
 146         paramValues[0] = (char *)&paramRank;
 147         paramLengths[0] = sizeof(paramRank);
 148         paramFormats[0] = 1;
 149                 if (rank < 16)
 150                 resSectors = PQexecPrepared(conn, "index_nosectors", 1, paramValues, paramLengths, paramFormats, 1);
 151                 else
 152                 resSectors = PQexecPrepared(conn, "index_sectors", 1, paramValues, paramLengths, paramFormats, 1);
 153         if (PQresultStatus(resSectors) != PGRES_TUPLES_OK)
 154         {
 155             fprintf(stderr, "index_sectors: SELECT failed: %s", PQerrorMessage(conn));
 156             PQclear(resSectors);
 157             exit(EXIT_FAILURE);
 158         }
 159                 if (PQftype(resSectors, 0) != PG_OID_INT4)
 160                 {
 161             fprintf(stderr, "Sector value has unexpected type\n");
 162             PQclear(resSectors);
 163             exit(EXIT_FAILURE);
 164                 }
 165                 if (PQftype(resSectors, 1) != PG_OID_INT8)
 166                 {
 167             fprintf(stderr, "Sector value has unexpected type\n");
 168             PQclear(resSectors);
 169             exit(EXIT_FAILURE);
 170                 }
 171
 172                 rankTotalTuples = 0;
 173         for (iSector = 0; iSector < PQntuples(resSectors); iSector++)
 174         {
 175                 rankTotalTuples += PGint64(*((uint64_t *)PQgetvalue(resSectors, iSector, 1)));
 176         }
 177
 178         for (iSector = 0; iSector < PQntuples(resSectors); iSector++)
 179         {
 180                         sector = PGint32(*((uint32_t *)PQgetvalue(resSectors, iSector, 0)));
 181                 //printf("\n Starting sector %d size %ld\n", sector, PGint64(*((uint64_t *)PQgetvalue(resSectors, iSector, 1))));
 182
 183                         // Get all the place_id's for this sector
 184                     paramRank = PGint32(rank);
 185                 paramValues[0] = (char *)&paramRank;
 186                     paramLengths[0] = sizeof(paramRank);
 187                     paramFormats[0] = 1;
 188                 paramSector = PGint32(sector);
 189                 paramValues[1] = (char *)&paramSector;
 190                         paramLengths[1] = sizeof(paramSector);
 191                     paramFormats[1] = 1;
 192                         if (rank < 16)
 193                         resPlaces = PQexecPrepared(conn, "index_nosector_places", 1, paramValues, paramLengths, paramFormats, 1);
 194                         else
 195                         resPlaces = PQexecPrepared(conn, "index_sector_places", 2, paramValues, paramLengths, paramFormats, 1);
 196                 if (PQresultStatus(resPlaces) != PGRES_TUPLES_OK)
 197                 {
 198                     fprintf(stderr, "index_sector_places: SELECT failed: %s", PQerrorMessage(conn));
 199                     PQclear(resPlaces);
 200                     exit(EXIT_FAILURE);
 201                 }
 202                         if (PQftype(resPlaces, 0) != PG_OID_INT4)
 203                         {
 204                     fprintf(stderr, "Place_id value has unexpected type\n");
 205                     PQclear(resPlaces);
 206                     exit(EXIT_FAILURE);
 207                         }
 208
 209                         count = 0;
 210                         rankPerSecond = 0;
 211                         tuples = PQntuples(resPlaces);
 212
 213                         if (tuples > 0)
 214                 {
 215                                 // Spawn threads
 216                                 for (i = 0; i < num_threads; i++)
 217                                 {
 218                                         thread_data[i].res = resPlaces;
 219                                         thread_data[i].tuples = tuples;
 220                                         thread_data[i].count = &count;
 221                                         thread_data[i].count_mutex = &count_mutex;
 222                                         thread_data[i].writer = writer;
 223                                         thread_data[i].writer_mutex = &writer_mutex;
 224                                         pthread_create(&thread_data[i].thread, NULL, &nominatim_indexThread, (void *)&thread_data[i]);
 225                                 }
 226
 227                                 // Monitor threads to give user feedback
 228                                 sleepcount = 0;
 229                                 while(count < tuples)
 230                                 {
 231                                         usleep(1000);
 232
 233                                         // Aim for one update per second
 234                                         if (sleepcount++ > 500)
 235                                         {
 236                                                 rankPerSecond = ((float)rankCountTuples + (float)count) / MAX(difftime(time(0), rankStartTime),1);
 237                                                 printf("  Done %i in %i @ %f per second - Rank %i ETA (seconds): %f\n", (rankCountTuples + count), (int)(difftime(time(0), rankStartTime)), rankPerSecond, rank, ((float)(rankTotalTuples - (rankCountTuples + count)))/rankPerSecond);
 238                                                 sleepcount = 0;
 239                                         }
 240                                 }
 241
 242                                 // Wait for everything to finish
 243                                 for (i = 0; i < num_threads; i++)
 244                                 {
 245                                         pthread_join(thread_data[i].thread, NULL);
 246                                 }
 247
 248                                 rankCountTuples += tuples;
 249                 }
 250
 251                         // Finished sector
 252                         rankPerSecond = (float)rankCountTuples / MAX(difftime(time(0), rankStartTime),1);
 253                         printf("  Done %i in %i @ %f per second - ETA (seconds): %f\n", rankCountTuples, (int)(difftime(time(0), rankStartTime)), rankPerSecond, ((float)(rankTotalTuples - rankCountTuples))/rankPerSecond);
 254
 255             PQclear(resPlaces);
 256
 257         }
 258         // Finished rank
 259                 printf("\r  Done %i in %i @ %f per second - FINISHED                      \n\n", rankCountTuples, (int)(difftime(time(0), rankStartTime)), rankPerSecond);
 260
 261         PQclear(resSectors);
 262     }
 263
 264     if (writer)
 265     {
 266         nominatim_exportXMLEnd(writer);
 267     }
 268 }
 269
 270 void *nominatim_indexThread(void * thread_data_in)
 271 {
 272         struct index_thread_data * thread_data = (struct index_thread_data * )thread_data_in;
 273
 274         PGresult * res;
 275
 276     const char *paramValues[1];
 277     int         paramLengths[1];
 278     int         paramFormats[1];
 279     uint32_t    paramPlaceID;
 280     uint32_t place_id;
 281
 282         while(1)
 283         {
 284                 pthread_mutex_lock( thread_data->count_mutex );
 285                 if (*(thread_data->count) >= thread_data->tuples)
 286                 {
 287                         pthread_mutex_unlock( thread_data->count_mutex );
 288                         break;
 289                 }
 290
 291                 place_id = PGint32(*((uint32_t *)PQgetvalue(thread_data->res, *thread_data->count, 0)));
 292                 (*thread_data->count)++;
 293
 294                 pthread_mutex_unlock( thread_data->count_mutex );
 295
 296 //              printf("  Processing place_id %d\n", place_id);
 297                 paramPlaceID = PGint32(place_id);
 298         paramValues[0] = (char *)&paramPlaceID;
 299         paramLengths[0] = sizeof(paramPlaceID);
 300         paramFormats[0] = 1;
 301         res = PQexecPrepared(thread_data->conn, "index_placex", 1, paramValues, paramLengths, paramFormats, 1);
 302         if (PQresultStatus(res) != PGRES_COMMAND_OK)
 303         {
 304             fprintf(stderr, "index_placex: UPDATE failed: %s", PQerrorMessage(thread_data->conn));
 305             PQclear(res);
 306             exit(EXIT_FAILURE);
 307         }
 308         PQclear(res);
 309
 310         if (thread_data->writer)
 311         {
 312                 nominatim_exportPlace(place_id, thread_data->conn, thread_data->writer, thread_data->writer_mutex);
 313         }
 314         }
 315
 316         return NULL;
 317 }