AC_SUBST(BUILD_WITH_OPENIPMI_LIBS)
fi
+dnl Check for libpq.
+with_pg_config="pg_config"
+with_libpq_includedir=""
+with_libpq_libdir=""
+with_libpq_cppflags=""
+with_libpq_ldflags=""
+AC_ARG_WITH(libpq, [AS_HELP_STRING([--with-libpq@<:@=PREFIX@:>@],
+ [Path to libpq.])],
+[
+ if test "x$withval" = "xno"
+ then
+ with_libpq="no"
+ else if test "x$withval" = "xyes"
+ then
+ with_libpq="yes"
+ else
+ if test -f "$withval" && test -x "$withval";
+ then
+ with_pg_config="$withval"
+ else if test -x "$withval/bin/pg_config"
+ then
+ with_pg_config="$withval/bin/pg_config"
+ fi; fi
+ with_libpq="yes"
+ fi; fi
+],
+[
+ with_libpq="yes"
+])
+if test "x$with_libpq" = "xyes"
+then
+ with_libpq_includedir=`$with_pg_config --includedir 2> /dev/null`
+ pg_config_status=$?
+
+ if test $pg_config_status -eq 0
+ then
+ if test -n "$with_libpq_includedir"; then
+ for dir in $with_libpq_includedir; do
+ with_libpq_cppflags="$with_libpq_cppflags -I$dir"
+ done
+ fi
+ else
+ AC_MSG_WARN([$with_pg_config returned with status $pg_config_status])
+ fi
+
+ SAVE_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $with_libpq_cppflags"
+
+ AC_CHECK_HEADERS(libpq-fe.h, [],
+ [with_libpq="no (libpq-fe.h not found)"], [])
+
+ CPPFLAGS="$SAVE_CPPFLAGS"
+fi
+if test "x$with_libpq" = "xyes"
+then
+ with_libpq_libdir=`$with_pg_config --libdir 2> /dev/null`
+ pg_config_status=$?
+
+ if test $pg_config_status -eq 0
+ then
+ if test -n "$with_libpq_libdir"; then
+ for dir in $with_libpq_libdir; do
+ with_libpq_ldflags="$with_libpq_ldflags -L$dir"
+ done
+ fi
+ else
+ AC_MSG_WARN([$with_pg_config returned with status $pg_config_status])
+ fi
+
+ SAVE_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS $with_libpq_ldflags"
+
+ AC_CHECK_LIB(pq, PQconnectdb,
+ [with_libpq="yes"],
+ [with_libpq="no (symbol 'PQconnectdb' not found)"])
+
+ LDFLAGS="$SAVE_LDFLAGS"
+fi
+if test "x$with_libpq" = "xyes"
+then
+ BUILD_WITH_LIBPQ_CPPFLAGS="$with_libpq_cppflags"
+ BUILD_WITH_LIBPQ_LDFLAGS="$with_libpq_ldflags"
+ AC_SUBST(BUILD_WITH_LIBPQ_CPPFLAGS)
+ AC_SUBST(BUILD_WITH_LIBPQ_LDFLAGS)
+fi
+AM_CONDITIONAL(BUILD_WITH_LIBPQ, test "x$with_libpq" = "xyes")
+
dnl Check for libvirt and libxml2 libraries.
with_libxml2="no (pkg-config isn't available)"
with_libxml2_cflags=""
AC_PLUGIN([nut], [$with_libupsclient], [Network UPS tools statistics])
AC_PLUGIN([perl], [$plugin_perl], [Embed a Perl interpreter])
AC_PLUGIN([ping], [$with_liboping], [Network latency statistics])
+AC_PLUGIN([postgresql], [$with_libpq], [PostgreSQL database statistics])
AC_PLUGIN([powerdns], [yes], [PowerDNS statistics])
AC_PLUGIN([processes], [$plugin_processes], [Process statistics])
AC_PLUGIN([qmail], [yes], [QMail queue statistics])
libpcap . . . . . . . $with_libpcap
libperl . . . . . . . $with_libperl
libpthread . . . . . $with_libpthread
+ libpq . . . . . . . . $with_libpq
librrd . . . . . . . $with_rrdtool
libsensors . . . . . $with_lm_sensors
libstatgrab . . . . . $with_libstatgrab
nut . . . . . . . . . $enable_nut
perl . . . . . . . . $enable_perl
ping . . . . . . . . $enable_ping
+ postgresql . . . . . $enable_postgresql
powerdns . . . . . . $enable_powerdns
processes . . . . . . $enable_processes
qmail . . . . . . . . $enable_qmail
--- /dev/null
+/**
+ * collectd - src/postgresql.c
+ * Copyright (C) 2008 Sebastian Harl
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; only version 2 of the License is applicable.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Author:
+ * Sebastian Harl <sh at tokkee.org>
+ **/
+
+/*
+ * This module collects PostgreSQL database statistics.
+ */
+
+#include "collectd.h"
+#include "common.h"
+
+#include "configfile.h"
+#include "plugin.h"
+
+#include "utils_complain.h"
+
+#include <pg_config_manual.h>
+#include <libpq-fe.h>
+
+#define log_err(...) ERROR ("postgresql: " __VA_ARGS__)
+#define log_warn(...) WARNING ("postgresql: " __VA_ARGS__)
+#define log_info(...) INFO ("postgresql: " __VA_ARGS__)
+
+/* Appends the (parameter, value) pair to the string
+ * pointed to by 'buf' suitable to be used as argument
+ * for PQconnectdb(). If value equals NULL, the pair
+ * is ignored. */
+#define C_PSQL_PAR_APPEND(buf, buf_len, parameter, value) \
+ if ((0 < (buf_len)) && (NULL != (value)) && ('\0' != *(value))) { \
+ int s = ssnprintf (buf, buf_len, " %s = '%s'", parameter, value); \
+ if (0 < s) { \
+ buf += s; \
+ buf_len -= s; \
+ } \
+ }
+
+/* Returns the tuple (major, minor, patchlevel)
+ * for the given version number. */
+#define C_PSQL_SERVER_VERSION3(server_version) \
+ (server_version) / 10000, \
+ (server_version) / 100 - (int)((server_version) / 10000) * 100, \
+ (server_version) - (int)((server_version) / 100) * 100
+
+/* Returns true if the given host specifies a
+ * UNIX domain socket. */
+#define C_PSQL_IS_UNIX_DOMAIN_SOCKET(host) \
+ ((NULL == (host)) || ('\0' == *(host)) || ('/' == *(host)))
+
+/* Returns the tuple (host, delimiter, port) for a
+ * given (host, port) pair. Depending on the value of
+ * 'host' a UNIX domain socket or a TCP socket is
+ * assumed. */
+#define C_PSQL_SOCKET3(host, port) \
+ ((NULL == (host)) || ('\0' == *(host))) ? DEFAULT_PGSOCKET_DIR : host, \
+ C_PSQL_IS_UNIX_DOMAIN_SOCKET (host) ? "/.s.PGSQL." : ":", \
+ port
+
+typedef struct {
+ PGconn *conn;
+ c_complain_t conn_complaint;
+
+ /* user configuration */
+ char *host;
+ char *port;
+ char *database;
+ char *user;
+ char *password;
+
+ char *sslmode;
+
+ char *krbsrvname;
+
+ char *service;
+} c_psql_database_t;
+
+static c_psql_database_t *databases = NULL;
+static int databases_num = 0;
+
+static void submit (const c_psql_database_t *db,
+ const char *type, const char *type_instance,
+ value_t *values, size_t values_len)
+{
+ value_list_t vl = VALUE_LIST_INIT;
+
+ vl.values = values;
+ vl.values_len = values_len;
+ vl.time = time (NULL);
+
+ if (C_PSQL_IS_UNIX_DOMAIN_SOCKET (db->host)
+ || (0 == strcmp (db->host, "localhost")))
+ sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+ else
+ sstrncpy (vl.host, db->host, sizeof (vl.host));
+
+ sstrncpy (vl.plugin, "postgresql", sizeof (vl.plugin));
+ sstrncpy (vl.plugin_instance, db->database, sizeof (vl.plugin_instance));
+
+ sstrncpy (vl.type, type, sizeof (vl.type));
+
+ if (NULL != type_instance)
+ sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
+
+ plugin_dispatch_values (&vl);
+ return;
+} /* submit */
+
+static void submit_counter (const c_psql_database_t *db,
+ const char *type, const char *type_instance,
+ const char *value)
+{
+ value_t values[1];
+
+ if ((NULL == value) || ('\0' == *value))
+ return;
+
+ values[0].counter = atoll (value);
+ submit (db, type, type_instance, values, 1);
+ return;
+} /* submit_counter */
+
+static void submit_gauge (const c_psql_database_t *db,
+ const char *type, const char *type_instance,
+ const char *value)
+{
+ value_t values[1];
+
+ if ((NULL == value) || ('\0' == *value))
+ return;
+
+ values[0].gauge = atof (value);
+ submit (db, type, type_instance, values, 1);
+ return;
+} /* submit_gauge */
+
+static int c_psql_check_connection (c_psql_database_t *db)
+{
+ /* "ping" */
+ PQclear (PQexec (db->conn, "SELECT 42;"));
+
+ if (CONNECTION_OK != PQstatus (db->conn)) {
+ PQreset (db->conn);
+
+ /* trigger c_release() */
+ if (0 == db->conn_complaint.interval)
+ db->conn_complaint.interval = 1;
+
+ if (CONNECTION_OK != PQstatus (db->conn)) {
+ c_complain (LOG_ERR, &db->conn_complaint,
+ "Failed to connect to database %s: %s",
+ db->database, PQerrorMessage (db->conn));
+ return -1;
+ }
+ }
+
+ c_release (LOG_INFO, &db->conn_complaint,
+ "Successfully reconnected to database %s", PQdb (db->conn));
+ return 0;
+} /* c_psql_check_connection */
+
+static int c_psql_stat_database (c_psql_database_t *db)
+{
+ const char *const query =
+ "SELECT numbackends, xact_commit, xact_rollback "
+ "FROM pg_stat_database "
+ "WHERE datname = $1;";
+
+ PGresult *res;
+
+ int n;
+
+ res = PQexecParams (db->conn, query, /* number of parameters */ 1,
+ NULL, (const char *const *)&db->database, NULL, NULL,
+ /* return text data */ 0);
+
+ if (PGRES_TUPLES_OK != PQresultStatus (res)) {
+ log_err ("Failed to execute SQL query: %s",
+ PQerrorMessage (db->conn));
+ log_info ("SQL query was: %s", query);
+ PQclear (res);
+ return -1;
+ }
+
+ n = PQntuples (res);
+ if (1 < n) {
+ log_warn ("pg_stat_database has more than one entry "
+ "for database %s - ignoring additional results.",
+ db->database);
+ }
+ else if (1 > n) {
+ log_err ("pg_stat_database has no entry for database %s",
+ db->database);
+ PQclear (res);
+ return -1;
+ }
+
+ submit_gauge (db, "pg_numbackends", NULL, PQgetvalue (res, 0, 0));
+
+ submit_counter (db, "pg_xact", "commit", PQgetvalue (res, 0, 1));
+ submit_counter (db, "pg_xact", "rollback", PQgetvalue (res, 0, 2));
+
+ PQclear (res);
+ return 0;
+} /* c_psql_stat_database */
+
+static int c_psql_stat_user_tables (c_psql_database_t *db)
+{
+ const char *const query =
+ "SELECT sum(seq_scan), sum(seq_tup_read), "
+ "sum(idx_scan), sum(idx_tup_fetch), "
+ "sum(n_tup_ins), sum(n_tup_upd), sum(n_tup_del), "
+ "sum(n_tup_hot_upd), sum(n_live_tup), sum(n_dead_tup) "
+ "FROM pg_stat_user_tables;";
+
+ PGresult *res;
+
+ int n;
+
+ res = PQexec (db->conn, query);
+
+ if (PGRES_TUPLES_OK != PQresultStatus (res)) {
+ log_err ("Failed to execute SQL query: %s",
+ PQerrorMessage (db->conn));
+ log_info ("SQL query was: %s", query);
+ PQclear (res);
+ return -1;
+ }
+
+ n = PQntuples (res);
+ assert (1 >= n);
+
+ if (1 > n) /* no user tables */
+ return 0;
+
+ submit_counter (db, "pg_scan", "seq", PQgetvalue (res, 0, 0));
+ submit_counter (db, "pg_scan", "seq_tup_read", PQgetvalue (res, 0, 1));
+ submit_counter (db, "pg_scan", "idx", PQgetvalue (res, 0, 2));
+ submit_counter (db, "pg_scan", "idx_tup_fetch", PQgetvalue (res, 0, 3));
+
+ submit_counter (db, "pg_n_tup_c", "ins", PQgetvalue (res, 0, 4));
+ submit_counter (db, "pg_n_tup_c", "upd", PQgetvalue (res, 0, 5));
+ submit_counter (db, "pg_n_tup_c", "del", PQgetvalue (res, 0, 6));
+ submit_counter (db, "pg_n_tup_c", "hot_upd", PQgetvalue (res, 0, 7));
+
+ submit_gauge (db, "pg_n_tup_g", "live", PQgetvalue (res, 0, 8));
+ submit_gauge (db, "pg_n_tup_g", "dead", PQgetvalue (res, 0, 9));
+
+ PQclear (res);
+ return 0;
+} /* c_psql_stat_user_tables */
+
+static int c_psql_statio_user_tables (c_psql_database_t *db)
+{
+ const char *const query =
+ "SELECT sum(heap_blks_read), sum(heap_blks_hit), "
+ "sum(idx_blks_read), sum(idx_blks_hit), "
+ "sum(toast_blks_read), sum(toast_blks_hit), "
+ "sum(tidx_blks_read), sum(tidx_blks_hit) "
+ "FROM pg_statio_user_tables;";
+
+ PGresult *res;
+
+ int n;
+
+ res = PQexec (db->conn, query);
+
+ if (PGRES_TUPLES_OK != PQresultStatus (res)) {
+ log_err ("Failed to execute SQL query: %s",
+ PQerrorMessage (db->conn));
+ log_info ("SQL query was: %s", query);
+ PQclear (res);
+ return -1;
+ }
+
+ n = PQntuples (res);
+ assert (1 >= n);
+
+ if (1 > n) /* no user tables */
+ return 0;
+
+ submit_counter (db, "pg_blks", "heap_read", PQgetvalue (res, 0, 0));
+ submit_counter (db, "pg_blks", "heap_hit", PQgetvalue (res, 0, 1));
+
+ submit_counter (db, "pg_blks", "idx_read", PQgetvalue (res, 0, 2));
+ submit_counter (db, "pg_blks", "idx_hit", PQgetvalue (res, 0, 3));
+
+ submit_counter (db, "pg_blks", "toast_read", PQgetvalue (res, 0, 4));
+ submit_counter (db, "pg_blks", "toast_hit", PQgetvalue (res, 0, 5));
+
+ submit_counter (db, "pg_blks", "tidx_read", PQgetvalue (res, 0, 6));
+ submit_counter (db, "pg_blks", "tidx_hit", PQgetvalue (res, 0, 7));
+
+ PQclear (res);
+ return 0;
+} /* c_psql_statio_user_tables */
+
+static int c_psql_read (void)
+{
+ int success = 0;
+ int i;
+
+ for (i = 0; i < databases_num; ++i) {
+ c_psql_database_t *db = databases + i;
+
+ assert (NULL != db->database);
+
+ if (0 != c_psql_check_connection (db))
+ continue;
+
+ c_psql_stat_database (db);
+ c_psql_stat_user_tables (db);
+ c_psql_statio_user_tables (db);
+
+ ++success;
+ }
+
+ if (! success)
+ return -1;
+ return 0;
+} /* c_psql_read */
+
+static int c_psql_shutdown (void)
+{
+ int i;
+
+ if ((NULL == databases) || (0 == databases_num))
+ return 0;
+
+ plugin_unregister_read ("postgresql");
+ plugin_unregister_shutdown ("postgresql");
+
+ for (i = 0; i < databases_num; ++i) {
+ c_psql_database_t *db = databases + i;
+
+ PQfinish (db->conn);
+
+ sfree (db->database);
+ sfree (db->host);
+ sfree (db->port);
+ sfree (db->user);
+ sfree (db->password);
+
+ sfree (db->sslmode);
+
+ sfree (db->krbsrvname);
+
+ sfree (db->service);
+ }
+
+ sfree (databases);
+ databases_num = 0;
+ return 0;
+} /* c_psql_shutdown */
+
+static int c_psql_init (void)
+{
+ int i;
+
+ if ((NULL == databases) || (0 == databases_num))
+ return 0;
+
+ for (i = 0; i < databases_num; ++i) {
+ c_psql_database_t *db = databases + i;
+
+ char conninfo[4096];
+ char *buf = conninfo;
+ int buf_len = sizeof (conninfo);
+ int status;
+
+ char *server_host;
+ int server_version;
+
+ status = ssnprintf (buf, buf_len, "dbname = '%s'", db->database);
+ if (0 < status) {
+ buf += status;
+ buf_len -= status;
+ }
+
+ C_PSQL_PAR_APPEND (buf, buf_len, "host", db->host);
+ C_PSQL_PAR_APPEND (buf, buf_len, "port", db->port);
+ C_PSQL_PAR_APPEND (buf, buf_len, "user", db->user);
+ C_PSQL_PAR_APPEND (buf, buf_len, "password", db->password);
+ C_PSQL_PAR_APPEND (buf, buf_len, "sslmode", db->sslmode);
+ C_PSQL_PAR_APPEND (buf, buf_len, "krbsrvname", db->krbsrvname);
+ C_PSQL_PAR_APPEND (buf, buf_len, "service", db->service);
+
+ db->conn = PQconnectdb (conninfo);
+ if (0 != c_psql_check_connection (db))
+ continue;
+
+ server_host = PQhost (db->conn);
+ server_version = PQserverVersion (db->conn);
+ log_info ("Sucessfully connected to database %s (user %s) "
+ "at server %s%s%s (server version: %d.%d.%d, "
+ "protocol version: %d, pid: %d)",
+ PQdb (db->conn), PQuser (db->conn),
+ C_PSQL_SOCKET3(server_host, PQport (db->conn)),
+ C_PSQL_SERVER_VERSION3 (server_version),
+ PQprotocolVersion (db->conn), PQbackendPID (db->conn));
+ }
+
+ plugin_register_read ("postgresql", c_psql_read);
+ plugin_register_shutdown ("postgresql", c_psql_shutdown);
+ return 0;
+} /* c_psql_init */
+
+static int config_set (char *name, char **var, const oconfig_item_t *ci)
+{
+ if ((0 != ci->children_num) || (1 != ci->values_num)
+ || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
+ log_err ("%s expects a single string argument.", name);
+ return 1;
+ }
+
+ sfree (*var);
+ *var = sstrdup (ci->values[0].value.string);
+ return 0;
+} /* config_set */
+
+static int c_psql_config_database (oconfig_item_t *ci)
+{
+ c_psql_database_t *db;
+
+ int i;
+
+ if ((1 != ci->values_num)
+ || (OCONFIG_TYPE_STRING != ci->values[0].type)) {
+ log_err ("<Database> expects a single string argument.");
+ return 1;
+ }
+
+ ++databases_num;
+ if (NULL == (databases = (c_psql_database_t *)realloc (databases,
+ databases_num * sizeof (*databases)))) {
+ log_err ("Out of memory.");
+ exit (5);
+ }
+
+ db = databases + (databases_num - 1);
+
+ db->conn = NULL;
+
+ db->conn_complaint.last = 0;
+ db->conn_complaint.interval = 0;
+
+ db->database = sstrdup (ci->values[0].value.string);
+ db->host = NULL;
+ db->port = NULL;
+ db->user = NULL;
+ db->password = NULL;
+
+ db->sslmode = NULL;
+
+ db->krbsrvname = NULL;
+
+ db->service = NULL;
+
+ for (i = 0; i < ci->children_num; ++i) {
+ oconfig_item_t *c = ci->children + i;
+
+ if (0 == strcasecmp (c->key, "Host"))
+ config_set ("Host", &db->host, c);
+ else if (0 == strcasecmp (c->key, "Port"))
+ config_set ("Port", &db->port, c);
+ else if (0 == strcasecmp (c->key, "User"))
+ config_set ("User", &db->user, c);
+ else if (0 == strcasecmp (c->key, "Password"))
+ config_set ("Password", &db->password, c);
+ else if (0 == strcasecmp (c->key, "SSLMode"))
+ config_set ("SSLMode", &db->sslmode, c);
+ else if (0 == strcasecmp (c->key, "KRBSrvName"))
+ config_set ("KRBSrvName", &db->krbsrvname, c);
+ else if (0 == strcasecmp (c->key, "Service"))
+ config_set ("Service", &db->service, c);
+ else
+ log_warn ("Ignoring unknown config key \"%s\".", c->key);
+ }
+ return 0;
+}
+
+static int c_psql_config (oconfig_item_t *ci)
+{
+ int i;
+
+ for (i = 0; i < ci->children_num; ++i) {
+ oconfig_item_t *c = ci->children + i;
+
+ if (0 == strcasecmp (c->key, "Database"))
+ c_psql_config_database (c);
+ else
+ log_warn ("Ignoring unknown config key \"%s\".", c->key);
+ }
+ return 0;
+} /* c_psql_config */
+
+void module_register (void)
+{
+ plugin_register_complex_config ("postgresql", c_psql_config);
+ plugin_register_init ("postgresql", c_psql_init);
+} /* module_register */
+
+/* vim: set sw=4 ts=4 tw=78 noexpandtab : */
+
projects / collectd.git / commitdiff