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pgreport.c
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pgreport.c
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/*
* pgreport, a PostgreSQL app to get lots of informations from PostgreSQL
* metadata and statistics.
*
* This software is released under the PostgreSQL Licence.
*
* Guillaume Lelarge, guillaume@lelarge.info, 2020-2024.
*
* pgstats/pgreport.c
*/
/*
* PostgreSQL headers
*/
#include "postgres_fe.h"
#include "common/logging.h"
#include "fe_utils/connect_utils.h"
#include "libpq/pqsignal.h"
/*
* pgreport headers
*/
#include "pgreport_queries.h"
/*
* Defines
*/
#define PGREPORT_VERSION "1.4.0"
#define PGREPORT_DEFAULT_LINES 20
#define PGREPORT_DEFAULT_STRING_SIZE 2048
/*
* Structs
*/
/* these are the options structure for command line parameters */
struct options
{
/* misc */
char *script;
bool verbose;
/* version number */
int major;
int minor;
};
/*
* Global variables
*/
struct options *opts;
extern char *optarg;
const char *progname;
/*
* Function prototypes
*/
static void help();
void get_opts(int, char **);
#ifndef FE_MEMUTILS_H
void *pg_malloc(size_t size);
char *pg_strdup(const char *in);
#endif
bool backend_minimum_version(int major, int minor);
void execute(char *query);
void install_extension(char *extension);
void fetch_version(void);
void fetch_postmaster_reloadconftime(void);
void fetch_postmaster_starttime(void);
void fetch_table(char *label, char *query);
void fetch_file(char *filename);
void fetch_kernelconfig(char *cfg);
void exec_command(char *cmd);
static void quit_properly(SIGNAL_ARGS);
/*
* Print help message
*/
static void
help()
{
printf("%s gets lots of informations from PostgreSQL metadata and statistics.\n\n"
"Usage:\n"
" %s [OPTIONS]\n"
"\nGeneral options:\n"
" -s VERSION generate SQL script for $VERSION release\n"
" -v verbose\n"
" -?|--help show this help, then exit\n"
" -V|--version output version information, then exit\n"
"Report bugs to <guillaume@lelarge.info>.\n",
progname, progname);
}
/*
* Parse command line options and check for some usage errors
*/
void
get_opts(int argc, char **argv)
{
int c;
/* set the defaults */
opts->script = NULL;
opts->verbose = false;
/* we should deal quickly with help and version */
if (argc > 1)
{
if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
{
help();
exit(0);
}
if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
{
puts("pgreport " PGREPORT_VERSION " (compiled with PostgreSQL " PG_VERSION ")");
exit(0);
}
}
/* get options */
while ((c = getopt(argc, argv, "vs:")) != -1)
{
switch (c)
{
/* get script */
case 's':
opts->script = pg_strdup(optarg);
sscanf(opts->script, "%d.%d", &(opts->major), &(opts->minor));
break;
/* get verbose */
case 'v':
opts->verbose = true;
break;
default:
pg_log_error("Try \"%s --help\" for more information.\n", progname);
exit(EXIT_FAILURE);
}
}
if (opts->script == NULL)
{
opts->script = "17";
}
}
#ifndef FE_MEMUTILS_H
/*
* "Safe" wrapper around malloc().
*/
void *
pg_malloc(size_t size)
{
void *tmp;
/* Avoid unportable behavior of malloc(0) */
if (size == 0)
size = 1;
tmp = malloc(size);
if (!tmp)
{
pg_log_error("out of memory (pg_malloc)\n");
exit(EXIT_FAILURE);
}
return tmp;
}
/*
* "Safe" wrapper around strdup().
*/
char *
pg_strdup(const char *in)
{
char *tmp;
if (!in)
{
pg_log_error("cannot duplicate null pointer (internal error)\n");
exit(EXIT_FAILURE);
}
tmp = strdup(in);
if (!tmp)
{
pg_log_error("out of memory (pg_strdup)\n");
exit(EXIT_FAILURE);
}
return tmp;
}
#endif
/*
* Compare given major and minor numbers to the one of the connected server
*/
bool
backend_minimum_version(int major, int minor)
{
return opts->major > major || (opts->major == major && opts->minor >= minor);
}
/*
* Execute query
*/
void
execute(char *query)
{
printf("%s;\n", query);
}
/*
* Install extension
*/
void
install_extension(char *extension)
{
printf("CREATE EXTENSION IF NOT EXISTS %s;\n", extension);
}
/*
* Fetch PostgreSQL major and minor numbers
*/
void
fetch_version()
{
printf("\\echo PostgreSQL version\n");
printf("SELECT version();\n");
}
/*
* Fetch PostgreSQL reload configuration time
*/
void
fetch_postmaster_reloadconftime()
{
printf("\\echo PostgreSQL reload conf time\n");
printf("SELECT pg_conf_load_time();\n");
}
/*
* Fetch PostgreSQL start time
*/
void
fetch_postmaster_starttime()
{
printf("\\echo PostgreSQL start time\n");
printf("SELECT pg_postmaster_start_time();\n");
}
/*
* Handle query
*/
void
fetch_table(char *label, char *query)
{
printf("\\echo %s\n",label);
printf("%s;\n",query);
}
/*
* Close the PostgreSQL connection, and quit
*/
static void
quit_properly(SIGNAL_ARGS)
{
exit(EXIT_FAILURE);
}
/*
* Main function
*/
int
main(int argc, char **argv)
{
char sql[10240];
/*
* If the user stops the program,
* quit nicely.
*/
pqsignal(SIGINT, quit_properly);
/* Initialize the logging interface */
pg_logging_init(argv[0]);
/* Get the program name */
progname = get_progname(argv[0]);
/* Allocate the options struct */
opts = (struct options *) pg_malloc(sizeof(struct options));
/* Parse the options */
get_opts(argc, argv);
printf("\\echo =================================================================================\n");
printf("\\echo == pgreport SQL script for a %s release =========================================\n", opts->script);
printf("\\echo =================================================================================\n");
printf("SET application_name to 'pgreport';\n");
/* Fetch version */
printf("\\echo # PostgreSQL Version\n\n");
fetch_version();
printf("\n");
/* Create schema, and set if as our search_path */
execute(CREATE_SCHEMA);
execute(SET_SEARCHPATH);
/* Install some extensions if they are not already there */
install_extension("pg_buffercache");
install_extension("pg_visibility");
/* Install some functions/views */
execute(CREATE_GETVALUE_FUNCTION_SQL);
execute(CREATE_BLOATTABLE_VIEW_SQL);
strcat(sql, CREATE_BLOATINDEX_VIEW_SQL_1);
strcat(sql, CREATE_BLOATINDEX_VIEW_SQL_2);
execute(sql);
if (backend_minimum_version(10,0))
{
execute(CREATE_ORPHANEDFILES_VIEW_SQL2);
}
else
{
execute(CREATE_ORPHANEDFILES_VIEW_SQL1);
}
/* Fetch postmaster start time */
printf("\\echo # PostgreSQL Start time\n\n");
fetch_postmaster_starttime();
printf("\n");
/* Fetch reload conf time */
printf("\\echo # PostgreSQL Reload conf time\n\n");
fetch_postmaster_reloadconftime();
printf("\n");
/* Fetch settings by various ways */
printf("\\echo # PostgreSQL Configuration\n\n");
fetch_table(SETTINGS_BY_SOURCEFILE_TITLE, SETTINGS_BY_SOURCEFILE_SQL);
fetch_table(SETTINGS_NOTCONFIGFILE_NOTDEFAULTVALUE_TITLE,
SETTINGS_NOTCONFIGFILE_NOTDEFAULTVALUE_SQL);
if (backend_minimum_version(9,5))
{
fetch_table(PGFILESETTINGS_TITLE, PGFILESETTINGS_SQL);
}
if (backend_minimum_version(10,0))
{
fetch_table(PGHBAFILERULES_TITLE, PGHBAFILERULES_SQL);
}
if (backend_minimum_version(15,0))
{
fetch_table(PGIDENTFILEMAPPINGS_TITLE, PGIDENTFILEMAPPINGS_SQL);
}
fetch_table(PGSETTINGS_TITLE, PGSETTINGS_SQL);
/* Fetch global objects */
printf("\\echo # Global objects\n\n");
fetch_table(CLUSTER_HITRATIO_TITLE, CLUSTER_HITRATIO_SQL);
fetch_table(CLUSTER_BUFFERSUSAGE_TITLE, CLUSTER_BUFFERSUSAGE_SQL);
fetch_table(CLUSTER_BUFFERSUSAGEDIRTY_TITLE, CLUSTER_BUFFERSUSAGEDIRTY_SQL);
fetch_table(DATABASES_TITLE, DATABASES_SQL);
fetch_table(DATABASES_IN_CACHE_TITLE, DATABASES_IN_CACHE_SQL);
fetch_table(TABLESPACES_TITLE, TABLESPACES_SQL);
fetch_table(ROLES_TITLE, backend_minimum_version(9,5) ? ROLES_SQL_95min : ROLES_SQL_94max);
fetch_table(USER_PASSWORDS_TITLE, USER_PASSWORDS_SQL);
fetch_table(DATABASEUSER_CONFIG_TITLE, DATABASEUSER_CONFIG_SQL);
/* Fetch local objects of the current database */
if (backend_minimum_version(9,3))
{
printf("SELECT current_database() AS db \\gset");
printf("\\echo # Local objects in database :'db'\n\n");
}
else
{
printf("\\echo # Local objects in current database\n\n");
}
fetch_table(SCHEMAS_TITLE, SCHEMAS_SQL);
fetch_table(NBRELS_IN_SCHEMA_TITLE, NBRELS_IN_SCHEMA_SQL);
if (backend_minimum_version(11,0))
{
fetch_table(NBFUNCSPROCS_IN_SCHEMA_TITLE,
NBFUNCSPROCS_IN_SCHEMA_SQL);
}
else
{
fetch_table(NBFUNCS_IN_SCHEMA_TITLE, NBFUNCS_IN_SCHEMA_SQL);
}
fetch_table(HEAPTOAST_SIZE_TITLE, HEAPTOAST_SIZE_SQL);
fetch_table(EXTENSIONS_TITLE, EXTENSIONS_SQL);
fetch_table(EXTENSIONSTABLE_TITLE, EXTENSIONSTABLE_SQL);
fetch_table(KINDS_SIZE_TITLE, KINDS_SIZE_SQL);
fetch_table(DEPENDENCIES_TITLE, DEPENDENCIES_SQL);
fetch_table(KINDS_IN_CACHE_TITLE, KINDS_IN_CACHE_SQL);
fetch_table(AM_SIZE_TITLE, AM_SIZE_SQL);
fetch_table(INDEXTYPE_TITLE, INDEXTYPE_SQL);
fetch_table(INDEXONTEXT_TITLE, INDEXONTEXT_SQL);
fetch_table(PERCENTUSEDINDEXES_TITLE, PERCENTUSEDINDEXES_SQL);
fetch_table(UNUSEDINDEXES_TITLE, UNUSEDINDEXES_SQL);
fetch_table(REDUNDANTINDEXES_TITLE, REDUNDANTINDEXES_SQL);
fetch_table(ORPHANEDFILES_TITLE, ORPHANEDFILES_SQL);
fetch_table(NBFUNCS_TITLE, NBFUNCS_SQL);
if (backend_minimum_version(11,0))
{
fetch_table(FUNCSPROCS_PER_SCHEMA_AND_KIND_TITLE,
FUNCSPROCS_PER_SCHEMA_AND_KIND_SQL);
}
else
{
fetch_table(FUNCS_PER_SCHEMA_TITLE, FUNCS_PER_SCHEMA_SQL);
}
fetch_table(LOBJ_TITLE, LOBJ_SQL);
fetch_table(LOBJ_STATS_TITLE, LOBJ_STATS_SQL);
fetch_table(RELOPTIONS_TITLE, RELOPTIONS_SQL);
fetch_table(NEEDVACUUM_TITLE, NEEDVACUUM_SQL);
fetch_table(NEEDANALYZE_TITLE, NEEDANALYZE_SQL);
fetch_table(MINAGE_TITLE, MINAGE_SQL);
fetch_table(TOBEFROZEN_TABLES_TITLE, TOBEFROZEN_TABLES_SQL);
fetch_table(BLOATOVERVIEW_TITLE, BLOATOVERVIEW_SQL);
fetch_table(TOP20BLOAT_TABLES_TITLE, TOP20BLOAT_TABLES_SQL);
fetch_table(TOP20BLOAT_INDEXES_TITLE, TOP20BLOAT_INDEXES_SQL);
fetch_table(REPSLOTS_TITLE, REPSLOTS_SQL);
if (backend_minimum_version(10,0))
{
fetch_table(PUBLICATIONS_TITLE, PUBLICATIONS_SQL);
fetch_table(SUBSCRIPTIONS_TITLE, SUBSCRIPTIONS_SQL);
}
/*
fetch_table(TOP10QUERYIDS_TITLE, TOP10QUERYIDS_SQL);
fetch_table(TOP10QUERIES_TITLE, TOP10QUERIES_SQL);
*/
/*
* Uninstall all
* Actually, it drops our schema, which should get rid of all our stuff
*/
execute(DROP_ALL);
pg_free(opts);
return 0;
}