postgres/timescaledb
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Add error when timescaledb library is not preloaded.

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Because this extension uses hooks, it should be preloaded into postgres.
This PR adds an error message if it is loaded dynamically (i.e. when
CREATE EXTENSION is run before without the library being preloaded).
This commit is contained in:
Matvey Arye 2017-05-18 09:51:42 -04:00 committed by Matvey Arye
parent fc4ddd65b5
commit 34ad9a00a9
1 changed files with 23 additions and 0 deletions
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23
src/init.c
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@ -2,6 +2,8 @@
#include <pg_config.h>
#include <access/xact.h>
#include <commands/extension.h>
#include <miscadmin.h>
#include <utils/guc.h>
#include "executor.h"
@ -37,6 +39,27 @@ extern void _PG_fini(void);
void
_PG_init(void)
{
if (!process_shared_preload_libraries_in_progress)
{
char *force_load = GetConfigOptionByName("timescaledb.allow_install_without_preload", NULL, true);
if (force_load == NULL || strlen(force_load) != 2 || strncmp(force_load, "on", 2) != 0) {
char *config_file = GetConfigOptionByName("config_file", NULL, false);
ereport(ERROR, (errmsg("The timescaledb library is not preloaded"),
errhint(
"Please preload the timescaledb library via shared_preload_libraries.\n\n"
"This can be done by editing the config file at: %1$s\n"
"and adding 'timescaledb' to the list in the shared_preload_libraries config.\n"
" # Modify postgresql.conf:\n"
" shared_preload_libraries = 'timescaledb'\n\n"
"Another way to do this, if not preloading other libraries, is with the command:\n"
" echo \"shared_preload_libraries = 'timescaledb'\" >> %1$s \n\n"
"If you REALLY know what you are doing and would like to load the library without preloading, you can disable this check with: \n"
" SET timescaledb.allow_install_without_preload = 'on';", config_file)));
return;
}
}
elog(INFO, "timescaledb loaded");
_hypertable_cache_init();
_chunk_cache_init();