#include "postgres_fe.h"
#include <unistd.h>
#include <ctype.h>
#include "common/connect.h"
#include "common/string.h"
#include "connectdb.h"
#include "parallel.h"
#include "pg_backup_archiver.h"
#include "pg_backup_db.h"
#include "pg_backup_utils.h"

Include dependency graph for pg_backup_db.c:

Functions
static void	_check_database_version (ArchiveHandle *AH)

static void	notice_processor (void arg, const char message)

void	ReconnectToServer (ArchiveHandle AH, const char dbname)

void	ConnectDatabaseAhx (Archive AHX, const ConnParams cparams, bool isReconnect)

void	DisconnectDatabase (Archive *AHX)

PGconn *	GetConnection (Archive *AHX)

static void	die_on_query_failure (ArchiveHandle AH, const char query)

void	ExecuteSqlStatement (Archive AHX, const char query)

PGresult *	ExecuteSqlQuery (Archive AHX, const char query, ExecStatusType status)

PGresult *	ExecuteSqlQueryForSingleRow (Archive fout, const char query)

static void	ExecuteSqlCommand (ArchiveHandle AH, const char qry, const char *desc)

static void	ExecuteSimpleCommands (ArchiveHandle AH, const char buf, size_t bufLen)

int	ExecuteSqlCommandBuf (Archive AHX, const char buf, size_t bufLen)

void	EndDBCopyMode (Archive AHX, const char tocEntryTag)

void	StartTransaction (Archive *AHX)

void	CommitTransaction (Archive *AHX)

void	IssueCommandPerBlob (ArchiveHandle AH, TocEntry te, const char cmdBegin, const char cmdEnd)

void	IssueACLPerBlob (ArchiveHandle AH, TocEntry te)

void	DropLOIfExists (ArchiveHandle *AH, Oid oid)

Function Documentation

◆ _check_database_version()

static void _check_database_version ( ArchiveHandle * AH )

static

Definition at line 32 of file pg_backup_db.c.

{
    const char *remoteversion_str;
    int         remoteversion;
    PGresult   *res;
 
    remoteversion_str = PQparameterStatus(AH->connection, "server_version");
    remoteversion = PQserverVersion(AH->connection);
    if (remoteversion == 0 || !remoteversion_str)
        pg_fatal("could not get \"server_version\" from libpq");
 
    AH->public.remoteVersionStr = pg_strdup(remoteversion_str);
    AH->public.remoteVersion = remoteversion;
    if (!AH->archiveRemoteVersion)
        AH->archiveRemoteVersion = AH->public.remoteVersionStr;
 
    if (remoteversion != PG_VERSION_NUM
        && (remoteversion < AH->public.minRemoteVersion ||
            remoteversion > AH->public.maxRemoteVersion))
    {
        pg_log_error("aborting because of server version mismatch");
        pg_log_error_detail("server version: %s; %s version: %s",
                            remoteversion_str, progname, PG_VERSION);
        exit(1);
    }
 
    /*
     * Check if server is in recovery mode, which means we are on a hot
     * standby.
     */
    res = ExecuteSqlQueryForSingleRow((Archive *) AH,
                                      "SELECT pg_catalog.pg_is_in_recovery()");
    AH->public.isStandby = (strcmp(PQgetvalue(res, 0, 0), "t") == 0);
    PQclear(res);
}

References _archiveHandle::archiveRemoteVersion, _archiveHandle::connection, ExecuteSqlQueryForSingleRow(), fb(), Archive::isStandby, Archive::maxRemoteVersion, pg_fatal, pg_log_error, pg_log_error_detail, pg_strdup(), PQclear, PQgetvalue, PQparameterStatus(), PQserverVersion(), progname, _archiveHandle::public, Archive::remoteVersion, and Archive::remoteVersionStr.

Referenced by ConnectDatabaseAhx().

◆ CommitTransaction()

void CommitTransaction ( Archive * AHX )

Definition at line 490 of file pg_backup_db.c.

{
    ArchiveHandle *AH = (ArchiveHandle *) AHX;
 
    ExecuteSqlCommand(AH, "COMMIT", "could not commit database transaction");
}

References ExecuteSqlCommand().

◆ ConnectDatabaseAhx()

void ConnectDatabaseAhx	(	Archive *	AHX,
		const ConnParams *	cparams,
		bool	isReconnect
	)

Definition at line 109 of file pg_backup_db.c.

{
    ArchiveHandle *AH = (ArchiveHandle *) AHX;
    trivalue    prompt_password;
    char       *password;
 
    if (AH->connection)
        pg_fatal("already connected to a database");
 
    /* Never prompt for a password during a reconnection */
    prompt_password = isReconnect ? TRI_NO : cparams->promptPassword;
 
    password = AH->savedPassword;
 
    if (prompt_password == TRI_YES && password == NULL)
        password = simple_prompt("Password: ", false);
 
    AH->connection = ConnectDatabase(cparams->dbname, NULL, cparams->pghost,
                                     cparams->pgport, cparams->username,
                                     prompt_password, true,
                                     progname, NULL, NULL, password, cparams->override_dbname);
 
    /* Start strict; later phases may override this. */
    PQclear(ExecuteSqlQueryForSingleRow((Archive *) AH,
                                        ALWAYS_SECURE_SEARCH_PATH_SQL));
 
    if (password && password != AH->savedPassword)
        free(password);
 
    /*
     * We want to remember connection's actual password, whether or not we got
     * it by prompting.  So we don't just store the password variable.
     */
    if (PQconnectionUsedPassword(AH->connection))
    {
        pg_free(AH->savedPassword);
        AH->savedPassword = pg_strdup(PQpass(AH->connection));
    }
 
    /* check for version mismatch */
    _check_database_version(AH);
 
    PQsetNoticeProcessor(AH->connection, notice_processor, NULL);
 
    /* arrange for SIGINT to issue a query cancel on this connection */
    set_archive_cancel_info(AH, AH->connection);
}

References _check_database_version(), ALWAYS_SECURE_SEARCH_PATH_SQL, ConnectDatabase(), _archiveHandle::connection, _connParams::dbname, ExecuteSqlQueryForSingleRow(), fb(), free, notice_processor(), _connParams::override_dbname, password, pg_fatal, pg_free(), pg_strdup(), _connParams::pghost, _connParams::pgport, PQclear, PQconnectionUsedPassword(), PQpass(), PQsetNoticeProcessor(), progname, _connParams::promptPassword, _archiveHandle::savedPassword, set_archive_cancel_info(), simple_prompt(), TRI_NO, TRI_YES, and _connParams::username.

Referenced by CloneArchive(), main(), ReconnectToServer(), restore_toc_entries_postfork(), and RestoreArchive().

◆ die_on_query_failure()

static void die_on_query_failure	(	ArchiveHandle *	AH,
		const char *	query
	)

static

Definition at line 208 of file pg_backup_db.c.

{
    if (!is_cancel_in_progress())
    {
        pg_log_error("query failed: %s",
                     PQerrorMessage(AH->connection));
        pg_log_error_detail("Query was: %s", query);
    }
 
    exit_nicely(1);
}

References _archiveHandle::connection, exit_nicely(), is_cancel_in_progress, pg_log_error, pg_log_error_detail, and PQerrorMessage().

Referenced by ExecuteSqlQuery(), and ExecuteSqlStatement().

◆ DisconnectDatabase()

void DisconnectDatabase ( Archive * AHX )

Definition at line 164 of file pg_backup_db.c.

{
    ArchiveHandle *AH = (ArchiveHandle *) AHX;
    char        errbuf[1];
 
    if (!AH->connection)
        return;
 
    if (AH->connCancel)
    {
        /*
         * If we have an active query, send a cancel before closing, ignoring
         * any errors.  This is of no use for a normal exit, but might be
         * helpful during pg_fatal().
         */
        if (PQtransactionStatus(AH->connection) == PQTRANS_ACTIVE)
            (void) PQcancel(AH->connCancel, errbuf, sizeof(errbuf));
 
        /*
         * Prevent signal handler from sending a cancel after this.
         */
        set_archive_cancel_info(AH, NULL);
    }
 
    PQfinish(AH->connection);
    AH->connection = NULL;
}

References _archiveHandle::connCancel, _archiveHandle::connection, fb(), PQcancel(), PQfinish(), PQTRANS_ACTIVE, PQtransactionStatus(), and set_archive_cancel_info().

Referenced by archive_close_connection(), restore_toc_entries_prefork(), RestoreArchive(), and RunWorker().

◆ DropLOIfExists()

void DropLOIfExists	(	ArchiveHandle *	AH,
		Oid	oid
	)

Definition at line 626 of file pg_backup_db.c.

{
    ahprintf(AH,
             "SELECT pg_catalog.lo_unlink(oid) "
             "FROM pg_catalog.pg_largeobject_metadata "
             "WHERE oid = '%u';\n",
             oid);
}

References ahprintf().

Referenced by _StartLO(), RestoreArchive(), and StartRestoreLO().

◆ EndDBCopyMode()

void EndDBCopyMode	(	Archive *	AHX,
		const char *	tocEntryTag
	)

Definition at line 448 of file pg_backup_db.c.

{
    ArchiveHandle *AH = (ArchiveHandle *) AHX;
 
    if (AH->pgCopyIn)
    {
        PGresult   *res;
 
        if (PQputCopyEnd(AH->connection, NULL) <= 0)
        {
            /* Stay quiet if this is a result of our own cancellation. */
            if (!is_cancel_in_progress())
                pg_log_error("error returned by PQputCopyEnd: %s",
                             PQerrorMessage(AH->connection));
            exit_nicely(1);
        }
 
        /* Check command status and return to normal libpq state */
        res = PQgetResult(AH->connection);
        if (PQresultStatus(res) != PGRES_COMMAND_OK)
            warn_or_exit_horribly(AH, "COPY failed for table \"%s\": %s",
                                  tocEntryTag, PQerrorMessage(AH->connection));
        PQclear(res);
 
        /* Do this to ensure we've pumped libpq back to idle state */
        if (PQgetResult(AH->connection) != NULL)
            pg_log_warning("unexpected extra results during COPY of table \"%s\"",
                           tocEntryTag);
 
        AH->pgCopyIn = false;
    }
}

References _archiveHandle::connection, exit_nicely(), fb(), is_cancel_in_progress, pg_log_error, pg_log_warning, _archiveHandle::pgCopyIn, PGRES_COMMAND_OK, PQclear, PQerrorMessage(), PQgetResult, PQputCopyEnd(), PQresultStatus, and warn_or_exit_horribly().

Referenced by restore_toc_entry().

◆ ExecuteSimpleCommands()

static void ExecuteSimpleCommands	(	ArchiveHandle *	AH,
		const char *	buf,
		size_t	bufLen
	)

static

Definition at line 323 of file pg_backup_db.c.

{
    const char *qry = buf;
    const char *eos = buf + bufLen;
 
    /* initialize command buffer if first time through */
    if (AH->sqlparse.curCmd == NULL)
        AH->sqlparse.curCmd = createPQExpBuffer();
 
    for (; qry < eos; qry++)
    {
        char        ch = *qry;
 
        /* For neatness, we skip any newlines between commands */
        if (!(ch == '\n' && AH->sqlparse.curCmd->len == 0))
            appendPQExpBufferChar(AH->sqlparse.curCmd, ch);
 
        switch (AH->sqlparse.state)
        {
            case SQL_SCAN:      /* Default state == 0, set in _allocAH */
                if (ch == ';')
                {
                    /*
                     * We've found the end of a statement. Send it and reset
                     * the buffer.
                     */
                    ExecuteSqlCommand(AH, AH->sqlparse.curCmd->data,
                                      "could not execute query");
                    resetPQExpBuffer(AH->sqlparse.curCmd);
                }
                else if (ch == '\'')
                {
                    AH->sqlparse.state = SQL_IN_SINGLE_QUOTE;
                    AH->sqlparse.backSlash = false;
                }
                else if (ch == '"')
                {
                    AH->sqlparse.state = SQL_IN_DOUBLE_QUOTE;
                }
                break;
 
            case SQL_IN_SINGLE_QUOTE:
                /* We needn't handle '' specially */
                if (ch == '\'' && !AH->sqlparse.backSlash)
                    AH->sqlparse.state = SQL_SCAN;
                else if (ch == '\\' && !AH->public.std_strings)
                    AH->sqlparse.backSlash = !AH->sqlparse.backSlash;
                else
                    AH->sqlparse.backSlash = false;
                break;
 
            case SQL_IN_DOUBLE_QUOTE:
                /* We needn't handle "" specially */
                if (ch == '"')
                    AH->sqlparse.state = SQL_SCAN;
                break;
        }
    }
}

References appendPQExpBufferChar(), sqlparseInfo::backSlash, buf, createPQExpBuffer(), sqlparseInfo::curCmd, PQExpBufferData::data, ExecuteSqlCommand(), fb(), PQExpBufferData::len, _archiveHandle::public, resetPQExpBuffer(), SQL_IN_DOUBLE_QUOTE, SQL_IN_SINGLE_QUOTE, SQL_SCAN, _archiveHandle::sqlparse, sqlparseInfo::state, and Archive::std_strings.

Referenced by ExecuteSqlCommandBuf().

◆ ExecuteSqlCommand()

static void ExecuteSqlCommand	(	ArchiveHandle *	AH,
		const char *	qry,
		const char *	desc
	)

static

Definition at line 271 of file pg_backup_db.c.

{
    PGconn     *conn = AH->connection;
    PGresult   *res;
 
#ifdef NOT_USED
    fprintf(stderr, "Executing: '%s'\n\n", qry);
#endif
    res = PQexec(conn, qry);
 
    switch (PQresultStatus(res))
    {
        case PGRES_COMMAND_OK:
        case PGRES_TUPLES_OK:
        case PGRES_EMPTY_QUERY:
            /* A-OK */
            break;
        case PGRES_COPY_IN:
            /* Assume this is an expected result */
            AH->pgCopyIn = true;
            break;
        default:
            /* trouble */
            warn_or_exit_horribly(AH, "%s: %sCommand was: %s",
                                  desc, PQerrorMessage(conn), qry);
            break;
    }
 
    PQclear(res);
}

References conn, _archiveHandle::connection, fb(), fprintf, _archiveHandle::pgCopyIn, PGRES_COMMAND_OK, PGRES_COPY_IN, PGRES_EMPTY_QUERY, PGRES_TUPLES_OK, PQclear, PQerrorMessage(), PQexec(), PQresultStatus, and warn_or_exit_horribly().

Referenced by CommitTransaction(), ExecuteSimpleCommands(), ExecuteSqlCommandBuf(), and StartTransaction().

◆ ExecuteSqlCommandBuf()

int ExecuteSqlCommandBuf	(	Archive *	AHX,
		const char *	buf,
		size_t	bufLen
	)

Definition at line 388 of file pg_backup_db.c.

{
    ArchiveHandle *AH = (ArchiveHandle *) AHX;
 
    if (AH->outputKind == OUTPUT_COPYDATA)
    {
        /*
         * COPY data.
         *
         * We drop the data on the floor if libpq has failed to enter COPY
         * mode; this allows us to behave reasonably when trying to continue
         * after an error in a COPY command.
         */
        if (AH->pgCopyIn &&
            PQputCopyData(AH->connection, buf, bufLen) <= 0)
        {
            /* Stay quiet if this is a result of our own cancellation. */
            if (!is_cancel_in_progress())
                pg_log_error("error returned by PQputCopyData: %s",
                             PQerrorMessage(AH->connection));
            exit_nicely(1);
        }
    }
    else if (AH->outputKind == OUTPUT_OTHERDATA)
    {
        /*
         * Table data expressed as INSERT commands; or, in old dump files,
         * BLOB COMMENTS data (which is expressed as COMMENT ON commands).
         */
        ExecuteSimpleCommands(AH, buf, bufLen);
    }
    else
    {
        /*
         * General SQL commands; we assume that commands will not be split
         * across calls.
         *
         * In most cases the data passed to us will be a null-terminated
         * string, but if it's not, we have to add a trailing null.
         */
        if (buf[bufLen] == '\0')
            ExecuteSqlCommand(AH, buf, "could not execute query");
        else
        {
            char       *str = (char *) pg_malloc(bufLen + 1);
 
            memcpy(str, buf, bufLen);
            str[bufLen] = '\0';
            ExecuteSqlCommand(AH, str, "could not execute query");
            pg_free(str);
        }
    }
 
    return bufLen;
}

References buf, _archiveHandle::connection, ExecuteSimpleCommands(), ExecuteSqlCommand(), exit_nicely(), fb(), is_cancel_in_progress, memcpy(), OUTPUT_COPYDATA, OUTPUT_OTHERDATA, _archiveHandle::outputKind, pg_free(), pg_log_error, pg_malloc(), _archiveHandle::pgCopyIn, PQerrorMessage(), PQputCopyData(), and str.

Referenced by ahwrite().

◆ ExecuteSqlQuery()

PGresult * ExecuteSqlQuery	(	Archive *	AHX,
		const char *	query,
		ExecStatusType	status
	)

Definition at line 233 of file pg_backup_db.c.

{
    ArchiveHandle *AH = (ArchiveHandle *) AHX;
    PGresult   *res;
 
    res = PQexec(AH->connection, query);
    if (PQresultStatus(res) != status)
        die_on_query_failure(AH, query);
    return res;
}

References _archiveHandle::connection, die_on_query_failure(), PQexec(), and PQresultStatus.

Referenced by append_depends_on_extension(), buildMatViewRefreshDependencies(), collectBinaryUpgradeClassOids(), collectComments(), collectRoleNames(), collectSecLabels(), collectSequences(), createViewAsClause(), dumpCompositeType(), dumpDatabase(), dumpDatabaseConfig(), dumpEnumType(), dumpOpclass(), dumpOpfamily(), dumpRule(), dumpSequenceData(), dumpStatisticsExtStats(), dumpTable(), dumpTableData_copy(), dumpTableData_insert(), dumpTableSchema(), dumpTSConfig(), dumpUserMappings(), ExecuteSqlQueryForSingleRow(), expand_extension_name_patterns(), expand_foreign_server_name_patterns(), expand_schema_name_patterns(), expand_table_name_patterns(), fetchAttributeStats(), getAccessMethods(), getAdditionalACLs(), getAggregates(), getCasts(), getCollations(), getConstraints(), getConversions(), getDefaultACLs(), getDependencies(), getDomainConstraints(), getEventTriggers(), getExtendedStatistics(), getExtensionMembership(), getExtensions(), getForeignDataWrappers(), getForeignServers(), getFuncs(), getIndexes(), getInherits(), getLOs(), getNamespaces(), getOpclasses(), getOperators(), getOpfamilies(), getPartitioningInfo(), getPolicies(), getProcLangs(), getPublicationNamespaces(), getPublications(), getPublicationTables(), getRules(), getSubscriptionRelations(), getSubscriptions(), getTableAttrs(), getTables(), getTransforms(), getTriggers(), getTSConfigurations(), getTSDictionaries(), getTSParsers(), getTSTemplates(), getTypes(), processExtensionTables(), and set_restrict_relation_kind().

◆ ExecuteSqlQueryForSingleRow()

PGresult * ExecuteSqlQueryForSingleRow	(	Archive *	fout,
		const char *	query
	)

Definition at line 248 of file pg_backup_db.c.

{
    PGresult   *res;
    int         ntups;
 
    res = ExecuteSqlQuery(fout, query, PGRES_TUPLES_OK);
 
    /* Expecting a single result only */
    ntups = PQntuples(res);
    if (ntups != 1)
        pg_fatal(ngettext("query returned %d row instead of one: %s",
                          "query returned %d rows instead of one: %s",
                          ntups),
                 ntups, query);
 
    return res;
}

References ExecuteSqlQuery(), fb(), ngettext, pg_fatal, PGRES_TUPLES_OK, and PQntuples.

Referenced by _check_database_version(), binary_upgrade_set_type_oids_by_type_oid(), ConnectDatabaseAhx(), convertTSFunction(), dumpAgg(), dumpBaseType(), dumpCollation(), dumpConversion(), dumpDatabase(), dumpDomain(), dumpForeignServer(), dumpFunc(), dumpOpclass(), dumpOpfamily(), dumpOpr(), dumpRangeType(), dumpSearchPath(), dumpStatisticsExt(), dumpTableAttach(), dumpTableSchema(), dumpTSConfig(), dumpTSDictionary(), expand_table_name_patterns(), get_language_name(), get_next_possible_free_pg_type_oid(), get_synchronized_snapshot(), getFormattedTypeName(), and setup_connection().

◆ ExecuteSqlStatement()

void ExecuteSqlStatement	(	Archive *	AHX,
		const char *	query
	)

Definition at line 221 of file pg_backup_db.c.

{
    ArchiveHandle *AH = (ArchiveHandle *) AHX;
    PGresult   *res;
 
    res = PQexec(AH->connection, query);
    if (PQresultStatus(res) != PGRES_COMMAND_OK)
        die_on_query_failure(AH, query);
    PQclear(res);
}

References _archiveHandle::connection, die_on_query_failure(), PGRES_COMMAND_OK, PQclear, PQexec(), and PQresultStatus.

Referenced by dumpAgg(), dumpBaseType(), dumpCompositeType(), dumpDomain(), dumpEnumType(), dumpFunc(), dumpOpr(), dumpRangeType(), dumpRelationStats_dumper(), dumpStatisticsExtStats(), dumpTable(), dumpTableAttach(), dumpTableData_insert(), expand_table_name_patterns(), getDomainConstraints(), getTables(), and setup_connection().

◆ GetConnection()

PGconn * GetConnection ( Archive * AHX )

Definition at line 193 of file pg_backup_db.c.

{
    ArchiveHandle *AH = (ArchiveHandle *) AHX;
 
    return AH->connection;
}

References _archiveHandle::connection.

◆ IssueACLPerBlob()

void IssueACLPerBlob	(	ArchiveHandle *	AH,
		TocEntry *	te
	)

Definition at line 552 of file pg_backup_db.c.

{
    TocEntry   *blobte = getTocEntryByDumpId(AH, te->dependencies[0]);
    char       *buf;
    char       *st;
    char       *st2;
    char       *en;
    bool        inquotes;
 
    if (!blobte)
        pg_fatal("could not find entry for ID %d", te->dependencies[0]);
    Assert(strcmp(blobte->desc, "BLOB METADATA") == 0);
 
    /* Make a writable copy of the ACL commands string */
    buf = pg_strdup(te->defn);
 
    /*
     * We have to parse out the commands sufficiently to locate the blob OIDs
     * and find the command-ending semicolons.  The commands should not
     * contain anything hard to parse except for double-quoted role names,
     * which are easy to ignore.  Once we've split apart the first and second
     * halves of a command, apply IssueCommandPerBlob.  (This means the
     * updates on the blobs are interleaved if there's multiple commands, but
     * that should cause no trouble.)
     */
    inquotes = false;
    st = en = buf;
    st2 = NULL;
    while (*en)
    {
        /* Ignore double-quoted material */
        if (*en == '"')
            inquotes = !inquotes;
        if (inquotes)
        {
            en++;
            continue;
        }
        /* If we found "LARGE OBJECT", that's the end of the first half */
        if (strncmp(en, "LARGE OBJECT ", 13) == 0)
        {
            /* Terminate the first-half string */
            en += 13;
            Assert(isdigit((unsigned char) *en));
            *en++ = '\0';
            /* Skip the rest of the blob OID */
            while (isdigit((unsigned char) *en))
                en++;
            /* Second half starts here */
            Assert(st2 == NULL);
            st2 = en;
        }
        /* If we found semicolon, that's the end of the second half */
        else if (*en == ';')
        {
            /* Terminate the second-half string */
            *en++ = '\0';
            Assert(st2 != NULL);
            /* Issue this command for each blob */
            IssueCommandPerBlob(AH, blobte, st, st2);
            /* For neatness, skip whitespace before the next command */
            while (isspace((unsigned char) *en))
                en++;
            /* Reset for new command */
            st = en;
            st2 = NULL;
        }
        else
            en++;
    }
    pg_free(buf);
}

References Assert, buf, _tocEntry::defn, _tocEntry::dependencies, fb(), getTocEntryByDumpId(), IssueCommandPerBlob(), pg_fatal, pg_free(), and pg_strdup().

Referenced by _printTocEntry().

◆ IssueCommandPerBlob()

void IssueCommandPerBlob	(	ArchiveHandle *	AH,
		TocEntry *	te,
		const char *	cmdBegin,
		const char *	cmdEnd
	)

Definition at line 505 of file pg_backup_db.c.

{
    /* Make a writable copy of the command string */
    char       *buf = pg_strdup(te->defn);
    RestoreOptions *ropt = AH->public.ropt;
    char       *st;
    char       *en;
 
    st = buf;
    while ((en = strchr(st, '\n')) != NULL)
    {
        *en++ = '\0';
        ahprintf(AH, "%s%s%s;\n", cmdBegin, st, cmdEnd);
 
        /* In --transaction-size mode, count each command as an action */
        if (ropt && ropt->txn_size > 0)
        {
            if (++AH->txnCount >= ropt->txn_size)
            {
                if (AH->connection)
                {
                    CommitTransaction(&AH->public);
                    StartTransaction(&AH->public);
                }
                else
                    ahprintf(AH, "COMMIT;\nBEGIN;\n\n");
                AH->txnCount = 0;
            }
        }
 
        st = en;
    }
    ahprintf(AH, "\n");
    pg_free(buf);
}

References ahprintf(), buf, CommitTransaction(), _archiveHandle::connection, _tocEntry::defn, fb(), pg_free(), pg_strdup(), _archiveHandle::public, Archive::ropt, StartTransaction(), _restoreOptions::txn_size, and _archiveHandle::txnCount.

Referenced by _printTocEntry(), IssueACLPerBlob(), and RestoreArchive().

◆ notice_processor()

static void notice_processor	(	void *	arg,
		const char *	message
	)

static

Definition at line 201 of file pg_backup_db.c.

{
    pg_log_info("%s", message);
}

References pg_log_info.

Referenced by ConnectDatabaseAhx().

◆ ReconnectToServer()

void ReconnectToServer	(	ArchiveHandle *	AH,
		const char *	dbname
	)

Definition at line 73 of file pg_backup_db.c.

{
    PGconn     *oldConn = AH->connection;
    RestoreOptions *ropt = AH->public.ropt;
 
    /*
     * Save the dbname, if given, in override_dbname so that it will also
     * affect any later reconnection attempt.
     */
    if (dbname)
        ropt->cparams.override_dbname = pg_strdup(dbname);
 
    /*
     * Note: we want to establish the new connection, and in particular update
     * ArchiveHandle's connCancel, before closing old connection.  Otherwise
     * an ill-timed SIGINT could try to access a dead connection.
     */
    AH->connection = NULL;      /* dodge error check in ConnectDatabaseAhx */
 
    ConnectDatabaseAhx((Archive *) AH, &ropt->cparams, true);
 
    PQfinish(oldConn);
}

References ConnectDatabaseAhx(), _archiveHandle::connection, _restoreOptions::cparams, dbname, fb(), _connParams::override_dbname, pg_strdup(), PQfinish(), _archiveHandle::public, and Archive::ropt.

Referenced by _reconnectToDB().

◆ StartTransaction()

void StartTransaction ( Archive * AHX )

Definition at line 482 of file pg_backup_db.c.

{
    ArchiveHandle *AH = (ArchiveHandle *) AHX;
 
    ExecuteSqlCommand(AH, "BEGIN", "could not start database transaction");
}

References ExecuteSqlCommand().

Functions

Function Documentation

◆ _check_database_version()

◆ CommitTransaction()

◆ ConnectDatabaseAhx()

◆ die_on_query_failure()

◆ DisconnectDatabase()

◆ DropLOIfExists()

◆ EndDBCopyMode()

◆ ExecuteSimpleCommands()

◆ ExecuteSqlCommand()

◆ ExecuteSqlCommandBuf()

◆ ExecuteSqlQuery()

◆ ExecuteSqlQueryForSingleRow()

◆ ExecuteSqlStatement()

◆ GetConnection()

◆ IssueACLPerBlob()

◆ IssueCommandPerBlob()

◆ notice_processor()

◆ ReconnectToServer()

◆ StartTransaction()