dump.c

Go to the documentation of this file.

/*
 *  dump.c
 *
 *  dump functions
 *
 *  Copyright (c) 2010-2025, PostgreSQL Global Development Group
 *  src/bin/pg_upgrade/dump.c
 */
 
#include "postgres_fe.h"
 
#include "fe_utils/string_utils.h"
#include "pg_upgrade.h"
 
void
generate_old_dump(void)
{
    int         dbnum;
 
    prep_status("Creating dump of global objects");
 
    /* run new pg_dumpall binary for globals */
    exec_prog(UTILITY_LOG_FILE, NULL, true, true,
              "\"%s/pg_dumpall\" %s --globals-only --quote-all-identifiers "
              "--binary-upgrade %s --no-sync -f \"%s/%s\"",
              new_cluster.bindir, cluster_conn_opts(&old_cluster),
              log_opts.verbose ? "--verbose" : "",
              log_opts.dumpdir,
              GLOBALS_DUMP_FILE);
    check_ok();
 
    prep_status_progress("Creating dump of database schemas");
 
    /* create per-db dump files */
    for (dbnum = 0; dbnum < old_cluster.dbarr.ndbs; dbnum++)
    {
        char        sql_file_name[MAXPGPATH],
                    log_file_name[MAXPGPATH];
        DbInfo     *old_db = &old_cluster.dbarr.dbs[dbnum];
        PQExpBufferData connstr,
                    escaped_connstr;
 
        initPQExpBuffer(&connstr);
        appendPQExpBufferStr(&connstr, "dbname=");
        appendConnStrVal(&connstr, old_db->db_name);
        initPQExpBuffer(&escaped_connstr);
        appendShellString(&escaped_connstr, connstr.data);
        termPQExpBuffer(&connstr);
 
        pg_log(PG_STATUS, "%s", old_db->db_name);
        snprintf(sql_file_name, sizeof(sql_file_name), DB_DUMP_FILE_MASK, old_db->db_oid);
        snprintf(log_file_name, sizeof(log_file_name), DB_DUMP_LOG_FILE_MASK, old_db->db_oid);
 
        parallel_exec_prog(log_file_name, NULL,
                           "\"%s/pg_dump\" %s --no-data %s %s --quote-all-identifiers "
                           "--binary-upgrade --format=custom %s --no-sync --file=\"%s/%s\" %s",
                           new_cluster.bindir, cluster_conn_opts(&old_cluster),
                           (user_opts.transfer_mode == TRANSFER_MODE_SWAP) ?
                           "" : "--sequence-data",
                           log_opts.verbose ? "--verbose" : "",
                           user_opts.do_statistics ? "" : "--no-statistics",
                           log_opts.dumpdir,
                           sql_file_name, escaped_connstr.data);
 
        termPQExpBuffer(&escaped_connstr);
    }
 
    /* reap all children */
    while (reap_child(true) == true)
        ;
 
    end_progress_output();
    check_ok();
}