From: Florian Forster Date: Sat, 14 Feb 2009 16:26:37 +0000 (+0100) Subject: postgresql plugin: Use the DB query module. X-Git-Tag: collectd-4.6.0~34 X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=4d380d9;p=collectd.git postgresql plugin: Use the DB query module. The old (legacy) features should still be supported. --- diff --git a/src/postgresql.c b/src/postgresql.c index fce35889..4e1c1e0c 100644 --- a/src/postgresql.c +++ b/src/postgresql.c @@ -1,6 +1,7 @@ /** * collectd - src/postgresql.c * Copyright (C) 2008, 2009 Sebastian Harl + * Copyright (C) 2009 Florian Forster * * 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 @@ -15,8 +16,9 @@ * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * - * Author: + * Authors: * Sebastian Harl + * Florian Forster **/ /* @@ -29,6 +31,7 @@ #include "configfile.h" #include "plugin.h" +#include "utils_db_query.h" #include "utils_complain.h" #include @@ -83,45 +86,24 @@ typedef enum { C_PSQL_PARAM_INTERVAL, } c_psql_param_t; +/* Parameter configuration. Stored as `user data' in the query objects. */ typedef struct { - char *type; - char *instance_prefix; - char **instances_str; - int *instances; - int instances_num; - char **values_str; /* may be NULL, even if values_num != 0 in - case the "Column" option has been used */ - int *values; - int *ds_types; - int values_num; -} c_psql_result_t; - -typedef struct { - char *name; - char *stmt; - c_psql_param_t *params; int params_num; - - c_psql_result_t *results; - int results_num; - - int min_pg_version; - int max_pg_version; -} c_psql_query_t; +} c_psql_user_data_t; typedef struct { PGconn *conn; c_complain_t conn_complaint; int proto_version; + int server_version; int max_params_num; /* user configuration */ - c_psql_query_t **queries; - int *hidden_queries; - int queries_num; + udb_query_t **queries; + size_t queries_num; char *host; char *port; @@ -147,148 +129,12 @@ static char *def_queries[] = { }; static int def_queries_num = STATIC_ARRAY_SIZE (def_queries); -static c_psql_query_t *queries = NULL; -static int queries_num = 0; +static udb_query_t **queries = NULL; +static size_t queries_num = 0; static c_psql_database_t *databases = NULL; static int databases_num = 0; -static c_psql_result_t *c_psql_result_new (c_psql_query_t *query) -{ - c_psql_result_t *res; - - ++query->results_num; - if (NULL == (query->results = (c_psql_result_t *)realloc (query->results, - query->results_num * sizeof (*query->results)))) { - log_err ("Out of memory."); - exit (5); - } - res = query->results + query->results_num - 1; - - res->type = NULL; - - res->instance_prefix = NULL; - res->instances_str = NULL; - res->instances = NULL; - res->instances_num = 0; - - res->values_str = NULL; - res->values = NULL; - res->ds_types = NULL; - res->values_num = 0; - return res; -} /* c_psql_result_new */ - -static void c_psql_result_delete (c_psql_result_t *res) -{ - int i; - - sfree (res->type); - - sfree (res->instance_prefix); - - for (i = 0; i < res->instances_num; ++i) - sfree (res->instances_str[i]); - sfree (res->instances_str); - sfree (res->instances); - res->instances_num = 0; - - for (i = 0; (NULL != res->values_str) && (i < res->values_num); ++i) - sfree (res->values_str[i]); - sfree (res->values_str); - sfree (res->values); - sfree (res->ds_types); - res->values_num = 0; -} /* c_psql_result_delete */ - -static c_psql_query_t *c_psql_query_new (const char *name) -{ - c_psql_query_t *query; - - ++queries_num; - if (NULL == (queries = (c_psql_query_t *)realloc (queries, - queries_num * sizeof (*queries)))) { - log_err ("Out of memory."); - exit (5); - } - query = queries + queries_num - 1; - - query->name = sstrdup (name); - query->stmt = NULL; - - query->params = NULL; - query->params_num = 0; - - query->results = NULL; - query->results_num = 0; - - query->min_pg_version = 0; - query->max_pg_version = INT_MAX; - return query; -} /* c_psql_query_new */ - -static int c_psql_query_init (c_psql_query_t *query) -{ - int i; - - /* Get the data set definitions for each query definition. */ - for (i = 0; i < query->results_num; ++i) { - c_psql_result_t *res = query->results + i; - const data_set_t *ds; - - int j; - - ds = plugin_get_ds (res->type); - if (NULL == ds) { - log_err ("Result: Unknown type \"%s\".", res->type); - return -1; - } - - if (res->values_num != ds->ds_num) { - log_err ("Result: Invalid type \"%s\" - " - "expected %i data source%s, got %i.", - res->type, res->values_num, - (1 == res->values_num) ? "" : "s", - ds->ds_num); - return -1; - } - - for (j = 0; j < res->values_num; ++j) - res->ds_types[j] = ds->ds[j].type; - } - return 0; -} /* c_psql_query_init */ - -static void c_psql_query_delete (c_psql_query_t *query) -{ - int i; - - sfree (query->name); - sfree (query->stmt); - - sfree (query->params); - query->params_num = 0; - - for (i = 0; i < query->results_num; ++i) - c_psql_result_delete (query->results + i); - sfree (query->results); - query->results_num = 0; - return; -} /* c_psql_query_delete */ - -static c_psql_query_t *c_psql_query_get (const char *name, int server_version) -{ - int i; - - for (i = 0; i < queries_num; ++i) - if (0 == strcasecmp (name, queries[i].name) - && ((-1 == server_version) - || ((queries[i].min_pg_version <= server_version) - && (server_version <= queries[i].max_pg_version)))) - return queries + i; - return NULL; -} /* c_psql_query_get */ - static c_psql_database_t *c_psql_database_new (const char *name) { c_psql_database_t *db; @@ -307,11 +153,11 @@ static c_psql_database_t *c_psql_database_new (const char *name) C_COMPLAIN_INIT (&db->conn_complaint); db->proto_version = 0; + db->server_version = 0; db->max_params_num = 0; db->queries = NULL; - db->hidden_queries = NULL; db->queries_num = 0; db->database = sstrdup (name); @@ -328,42 +174,12 @@ static c_psql_database_t *c_psql_database_new (const char *name) return db; } /* c_psql_database_new */ -static void c_psql_database_init (c_psql_database_t *db, int server_version) -{ - int i; - - /* Get the right version of each query definition. */ - for (i = 0; i < db->queries_num; ++i) { - c_psql_query_t *tmp; - - tmp = c_psql_query_get (db->queries[i]->name, server_version); - - if (tmp == db->queries[i]) - continue; - - if (NULL == tmp) { - log_err ("Query \"%s\" not found for server version %i - " - "please check your configuration.", - db->queries[i]->name, server_version); - /* By hiding the query (rather than removing it from the list) we - * don't lose it in case a reconnect to an available version - * happens at a later time. */ - db->hidden_queries[i] = 1; - continue; - } - - db->hidden_queries[i] = 0; - db->queries[i] = tmp; - } -} /* c_psql_database_init */ - static void c_psql_database_delete (c_psql_database_t *db) { PQfinish (db->conn); db->conn = NULL; sfree (db->queries); - sfree (db->hidden_queries); db->queries_num = 0; sfree (db->database); @@ -380,137 +196,6 @@ static void c_psql_database_delete (c_psql_database_t *db) return; } /* c_psql_database_delete */ -static void submit (const c_psql_database_t *db, const c_psql_result_t *res, - char **instances, value_t *values) -{ - value_list_t vl = VALUE_LIST_INIT; - - int instances_num = res->instances_num; - - if (NULL != res->instance_prefix) - ++instances_num; - - vl.values = values; - vl.values_len = res->values_num; - - 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, res->type, sizeof (vl.type)); - - if (0 < instances_num) { - vl.type_instance[sizeof (vl.type_instance) - 1] = '\0'; - strjoin (vl.type_instance, sizeof (vl.type_instance), - instances, instances_num, "-"); - - if ('\0' != vl.type_instance[sizeof (vl.type_instance) - 1]) { - vl.type_instance[sizeof (vl.type_instance) - 1] = '\0'; - log_warn ("Truncated type instance: %s.", vl.type_instance); - } - } - - plugin_dispatch_values (&vl); - return; -} /* submit */ - -static int c_psql_get_colnum (PGresult *pgres, - char **strings, int *numbers, int idx) -{ - int colnum; - - if (0 <= numbers[idx]) - return numbers[idx]; - - colnum = PQfnumber (pgres, strings[idx]); - if (0 > colnum) - log_err ("No such column: %s.", strings[idx]); - - numbers[idx] = colnum; - return colnum; -} /* c_psql_get_colnum */ - -static void c_psql_dispatch_row (c_psql_database_t *db, c_psql_query_t *query, - PGresult *pgres, int row) -{ - int i; - - for (i = 0; i < query->results_num; ++i) { - c_psql_result_t *res = query->results + i; - - char *instances[res->instances_num + 1]; - value_t values[res->values_num]; - - int offset = 0, status = 0, j; - - /* get the instance name */ - if (NULL != res->instance_prefix) { - instances[0] = res->instance_prefix; - offset = 1; - } - - for (j = 0; (0 == status) && (j < res->instances_num); ++j) { - int col = c_psql_get_colnum (pgres, - res->instances_str, res->instances, j); - - if (0 > col) { - status = -1; - break; - } - - instances[j + offset] = PQgetvalue (pgres, row, col); - if (NULL == instances[j + offset]) - instances[j + offset] = ""; - } - - /* get the values */ - for (j = 0; (0 == status) && (j < res->values_num); ++j) { - int col = c_psql_get_colnum (pgres, - res->values_str, res->values, j); - - char *value_str; - char *endptr = NULL; - - if (0 > col) { - status = -1; - break; - } - - value_str = PQgetvalue (pgres, row, col); - if ((NULL == value_str) || ('\0' == *value_str)) - value_str = "0"; - - if (res->ds_types[j] == DS_TYPE_COUNTER) - values[j].counter = (counter_t)strtoll (value_str, &endptr, 0); - else if (res->ds_types[j] == DS_TYPE_GAUGE) - values[j].gauge = (gauge_t)strtod (value_str, &endptr); - else { - log_err ("Invalid type \"%s\" (%i).", - res->type, res->ds_types[j]); - } - - if (value_str == endptr) { - log_err ("Failed to parse string as number: %s.", value_str); - status = -1; - break; - } - else if ((NULL != endptr) && ('\0' != *endptr)) - log_warn ("Ignoring trailing garbage after number: %s.", - endptr); - } - - if (0 != status) - continue; - - submit (db, res, instances, values); - } -} /* c_psql_dispatch_row */ - static int c_psql_check_connection (c_psql_database_t *db) { /* "ping" */ @@ -536,27 +221,33 @@ static int c_psql_check_connection (c_psql_database_t *db) db->proto_version); } - /* We might have connected to a different PostgreSQL version, so we - * need to reinitialize stuff. */ - if (c_would_release (&db->conn_complaint)) - c_psql_database_init (db, PQserverVersion (db->conn)); + db->server_version = PQserverVersion (db->conn); c_release (LOG_INFO, &db->conn_complaint, "Successfully reconnected to database %s", PQdb (db->conn)); return 0; } /* c_psql_check_connection */ +static PGresult *c_psql_exec_query_noparams (c_psql_database_t *db, + udb_query_t *q) +{ + return PQexec (db->conn, udb_query_get_statement (q)); +} /* c_psql_exec_query_noparams */ + static PGresult *c_psql_exec_query_params (c_psql_database_t *db, - c_psql_query_t *query) + udb_query_t *q, c_psql_user_data_t *data) { char *params[db->max_params_num]; char interval[64]; int i; - assert (db->max_params_num >= query->params_num); + if ((data == NULL) || (data->params_num == 0)) + return (c_psql_exec_query_noparams (db, q)); - for (i = 0; i < query->params_num; ++i) { - switch (query->params[i]) { + assert (db->max_params_num >= data->params_num); + + for (i = 0; i < data->params_num; ++i) { + switch (data->params[i]) { case C_PSQL_PARAM_HOST: params[i] = C_PSQL_IS_UNIX_DOMAIN_SOCKET (db->host) ? "localhost" : db->host; @@ -576,64 +267,129 @@ static PGresult *c_psql_exec_query_params (c_psql_database_t *db, } } - return PQexecParams (db->conn, query->stmt, query->params_num, NULL, - (const char *const *)((0 == query->params_num) ? NULL : params), + return PQexecParams (db->conn, udb_query_get_statement (q), + data->params_num, NULL, + (const char *const *) params, NULL, NULL, /* return text data */ 0); } /* c_psql_exec_query_params */ -static PGresult *c_psql_exec_query_noparams (c_psql_database_t *db, - c_psql_query_t *query) +static int c_psql_exec_query (c_psql_database_t *db, udb_query_t *q) { - return PQexec (db->conn, query->stmt); -} /* c_psql_exec_query_noparams */ + PGresult *res; -static int c_psql_exec_query (c_psql_database_t *db, int idx) -{ - c_psql_query_t *query; - PGresult *res; + c_psql_user_data_t *data; - int rows, cols; - int i; + const char *host; - if (idx >= db->queries_num) - return -1; + char **column_names; + char **column_values; + int column_num; - if (0 != db->hidden_queries[idx]) - return 0; + int rows_num; + int status; + int i; - query = db->queries[idx]; + /* The user data may hold parameter information */ + data = udb_query_get_user_data (q); + /* Versions up to `3' don't know how to handle parameters. */ if (3 <= db->proto_version) - res = c_psql_exec_query_params (db, query); - else if (0 == query->params_num) - res = c_psql_exec_query_noparams (db, query); + res = c_psql_exec_query_params (db, q, data); + else if ((NULL == data) || (0 == data->params_num)) + res = c_psql_exec_query_noparams (db, q); else { log_err ("Connection to database \"%s\" does not support parameters " "(protocol version %d) - cannot execute query \"%s\".", - db->database, db->proto_version, query->name); + db->database, db->proto_version, + udb_query_get_name (q)); return -1; } + column_names = NULL; + column_values = NULL; + +#define BAIL_OUT(status) \ + sfree (column_names); \ + sfree (column_values); \ + PQclear (res); \ + return status + if (PGRES_TUPLES_OK != PQresultStatus (res)) { log_err ("Failed to execute SQL query: %s", PQerrorMessage (db->conn)); - log_info ("SQL query was: %s", query->stmt); - PQclear (res); - return -1; + log_info ("SQL query was: %s", + udb_query_get_statement (q)); + BAIL_OUT (-1); } - rows = PQntuples (res); - if (1 > rows) { - PQclear (res); - return 0; + rows_num = PQntuples (res); + if (1 > rows_num) { + BAIL_OUT (0); } - cols = PQnfields (res); + column_num = PQnfields (res); + column_names = (char **) calloc (column_num, sizeof (char *)); + if (NULL == column_names) { + log_err ("calloc failed."); + BAIL_OUT (-1); + } - for (i = 0; i < rows; ++i) - c_psql_dispatch_row (db, query, res, i); - PQclear (res); - return 0; + column_values = (char **) calloc (column_num, sizeof (char *)); + if (NULL == column_values) { + log_err ("calloc failed."); + BAIL_OUT (-1); + } + + for (i = 0; i < column_num; i++) { + /* Pointers returned by `PQfname' are freed by `PQclear' via + * `BAIL_OUT'. */ + column_names[i] = PQfname (res, i); + if (NULL == column_names[i]) { + log_err ("PQfname (%i) failed.", i); + BAIL_OUT (-1); + } + } + + if (C_PSQL_IS_UNIX_DOMAIN_SOCKET (db->host) + || (0 == strcmp (db->host, "localhost"))) + host = hostname_g; + else + host = db->host; + + status = udb_query_prepare_result (q, host, "postgresql", + db->database, column_names, (size_t) column_num); + if (0 != status) { + log_err ("udb_query_prepare_result failed with status %i.", + status); + BAIL_OUT (-1); + } + + for (i = 0; i < rows_num; ++i) { + int j; + + for (j = 0; j < column_num; j++) { + /* Pointers returned by `PQgetvalue' are freed by `PQclear' via + * `BAIL_OUT'. */ + column_values[j] = PQgetvalue (res, /* row = */ i, /* col = */ j); + if (NULL == column_values[j]) { + log_err ("PQgetvalue (%i, %i) failed.", i, j); + break; + } + } + + /* check for an error */ + if (j < column_num) + continue; + + status = udb_query_handle_result (q, column_values); + if (status != 0) { + log_err ("udb_query_handle_result failed with status %i.", + status); + } + } /* for (i = 0; i < rows_num; ++i) */ + + BAIL_OUT (0); +#undef BAIL_OUT } /* c_psql_exec_query */ static int c_psql_read (void) @@ -652,7 +408,17 @@ static int c_psql_read (void) continue; for (j = 0; j < db->queries_num; ++j) - c_psql_exec_query (db, j); + { + udb_query_t *q; + + q = db->queries[j]; + + if ((0 != db->server_version) + && (udb_query_check_version (q, db->server_version) <= 0)) + continue; + + c_psql_exec_query (db, q); + } ++success; } @@ -672,21 +438,16 @@ static int c_psql_shutdown (void) plugin_unregister_read ("postgresql"); plugin_unregister_shutdown ("postgresql"); - for (i = 0; i < databases_num; ++i) { - c_psql_database_t *db = databases + i; - c_psql_database_delete (db); - } + for (i = 0; i < databases_num; ++i) + c_psql_database_delete (databases + i); sfree (databases); databases_num = 0; - for (i = 0; i < queries_num; ++i) { - c_psql_query_t *query = queries + i; - c_psql_query_delete (query); - } - - sfree (queries); + udb_query_free (queries, queries_num); + queries = NULL; queries_num = 0; + return 0; } /* c_psql_shutdown */ @@ -697,12 +458,6 @@ static int c_psql_init (void) if ((NULL == databases) || (0 == databases_num)) return 0; - for (i = 0; i < queries_num; ++i) - if (0 != c_psql_query_init (queries + i)) { - c_psql_shutdown (); - return -1; - } - for (i = 0; i < databases_num; ++i) { c_psql_database_t *db = databases + i; @@ -753,8 +508,6 @@ static int c_psql_init (void) if (3 > db->proto_version) log_warn ("Protocol version %d does not support parameters.", db->proto_version); - - c_psql_database_init (db, server_version); } plugin_register_read ("postgresql", c_psql_read); @@ -775,291 +528,61 @@ static int config_set_s (char *name, char **var, const oconfig_item_t *ci) return 0; } /* config_set_s */ -static int config_set_i (char *name, int *var, const oconfig_item_t *ci) -{ - if ((0 != ci->children_num) || (1 != ci->values_num) - || (OCONFIG_TYPE_NUMBER != ci->values[0].type)) { - log_err ("%s expects a single number argument.", name); - return 1; - } - - *var = (int)ci->values[0].value.number; - return 0; -} /* config_set_i */ - -static int config_append_array_s (char *name, char ***var, int *len, - const oconfig_item_t *ci) +static int config_query_param_add (udb_query_t *q, oconfig_item_t *ci) { - int i; + c_psql_user_data_t *data; + const char *param_str; - if ((0 != ci->children_num) || (1 > ci->values_num)) { - log_err ("%s expects at least one argument.", name); - return 1; - } + c_psql_param_t *tmp; - for (i = 0; i < ci->values_num; ++i) { - if (OCONFIG_TYPE_STRING != ci->values[i].type) { - log_err ("%s expects string arguments.", name); - return 1; + data = udb_query_get_user_data (q); + if (NULL == data) { + data = (c_psql_user_data_t *) smalloc (sizeof (*data)); + if (NULL == data) { + log_err ("Out of memory."); + return -1; } + memset (data, 0, sizeof (*data)); + data->params = NULL; } - *len += ci->values_num; - if (NULL == (*var = (char **)realloc (*var, *len * sizeof (**var)))) { + tmp = (c_psql_param_t *) realloc (data->params, + (data->params_num + 1) * sizeof (c_psql_param_t)); + if (NULL == tmp) { log_err ("Out of memory."); - exit (5); - } - - for (i = *len - ci->values_num; i < *len; ++i) - (*var)[i] = sstrdup (ci->values[i].value.string); - return 0; -} /* config_append_array_s */ - -static int config_set_param (c_psql_query_t *query, const oconfig_item_t *ci) -{ - c_psql_param_t param; - char *param_str; - - if ((0 != ci->children_num) || (1 != ci->values_num) - || (OCONFIG_TYPE_STRING != ci->values[0].type)) { - log_err ("Param expects a single string argument."); - return 1; + return -1; } + data->params = tmp; param_str = ci->values[0].value.string; if (0 == strcasecmp (param_str, "hostname")) - param = C_PSQL_PARAM_HOST; + data->params[data->params_num] = C_PSQL_PARAM_HOST; else if (0 == strcasecmp (param_str, "database")) - param = C_PSQL_PARAM_DB; + data->params[data->params_num] = C_PSQL_PARAM_DB; else if (0 == strcasecmp (param_str, "username")) - param = C_PSQL_PARAM_USER; + data->params[data->params_num] = C_PSQL_PARAM_USER; else if (0 == strcasecmp (param_str, "interval")) - param = C_PSQL_PARAM_INTERVAL; + data->params[data->params_num] = C_PSQL_PARAM_INTERVAL; else { log_err ("Invalid parameter \"%s\".", param_str); return 1; } - ++query->params_num; - if (NULL == (query->params = (c_psql_param_t *)realloc (query->params, - query->params_num * sizeof (*query->params)))) { - log_err ("Out of memory."); - exit (5); - } + data->params_num++; + udb_query_set_user_data (q, data); - query->params[query->params_num - 1] = param; - return 0; -} /* config_set_param */ + return (0); +} /* config_query_param_add */ -static int config_set_result (c_psql_query_t *query, const oconfig_item_t *ci) +static int config_query_callback (udb_query_t *q, oconfig_item_t *ci) { - c_psql_result_t *res; - - int status = 0, i; - - if (0 != ci->values_num) { - log_err (" does not expect any arguments."); - return 1; - } - - res = c_psql_result_new (query); - - for (i = 0; i < ci->children_num; ++i) { - oconfig_item_t *c = ci->children + i; + if (0 == strcasecmp ("Param", ci->key)) + return config_query_param_add (q, ci); - if (0 == strcasecmp (c->key, "Type")) - config_set_s ("Type", &res->type, c); - else if (0 == strcasecmp (c->key, "InstancePrefix")) - config_set_s ("InstancePrefix", &res->instance_prefix, c); - else if (0 == strcasecmp (c->key, "InstancesFrom")) - config_append_array_s ("InstancesFrom", - &res->instances_str, &res->instances_num, c); - else if (0 == strcasecmp (c->key, "ValuesFrom")) - config_append_array_s ("ValuesFrom", - &res->values_str, &res->values_num, c); - else - log_warn ("Ignoring unknown config key \"%s\".", c->key); - } - - if (NULL == res->type) { - log_warn ("Query \"%s\": Missing Type option in block.", - query->name); - status = 1; - } + log_err ("Option not allowed within a Query block: `%s'", ci->key); - if (NULL == res->values_str) { - log_warn ("Query \"%s\": Missing ValuesFrom option in block.", - query->name); - status = 1; - } - - if (0 != status) { - c_psql_result_delete (res); - --query->results_num; - return status; - } - - /* preallocate memory to cache the column numbers and data types */ - res->values = (int *)smalloc (res->values_num * sizeof (*res->values)); - for (i = 0; i < res->values_num; ++i) - res->values[i] = -1; - - res->instances = (int *)smalloc (res->instances_num - * sizeof (*res->instances)); - for (i = 0; i < res->instances_num; ++i) - res->instances[i] = -1; - - res->ds_types = (int *)smalloc (res->values_num - * sizeof (*res->ds_types)); - for (i = 0; i < res->values_num; ++i) - res->ds_types[i] = -1; - return 0; -} /* config_set_result */ - -static int config_set_column (c_psql_query_t *query, int col_num, - const oconfig_item_t *ci) -{ - c_psql_result_t *res; - - int i; - - if ((0 != ci->children_num) - || (1 > ci->values_num) || (2 < ci->values_num)) { - log_err ("Column expects either one or two arguments."); - return 1; - } - - for (i = 0; i < ci->values_num; ++i) { - if (OCONFIG_TYPE_STRING != ci->values[i].type) { - log_err ("Column expects either one or two string arguments."); - return 1; - } - } - - res = c_psql_result_new (query); - - res->type = sstrdup (ci->values[0].value.string); - - if (2 == ci->values_num) - res->instance_prefix = sstrdup (ci->values[1].value.string); - - res->values = (int *)smalloc (sizeof (*res->values)); - res->values[0] = col_num; - res->ds_types = (int *)smalloc (sizeof (*res->ds_types)); - res->values_num = 1; - return 0; -} /* config_set_column */ - -static int set_query (c_psql_database_t *db, const char *name) -{ - c_psql_query_t *query; - - query = c_psql_query_get (name, -1); - if (NULL == query) { - log_err ("Query \"%s\" not found - please check your configuration.", - name); - return 1; - } - - ++db->queries_num; - if (NULL == (db->queries = (c_psql_query_t **)realloc (db->queries, - db->queries_num * sizeof (*db->queries)))) { - log_err ("Out of memory."); - exit (5); - } - - if (query->params_num > db->max_params_num) - db->max_params_num = query->params_num; - - db->queries[db->queries_num - 1] = query; - return 0; -} /* set_query */ - -static int config_set_query (c_psql_database_t *db, const oconfig_item_t *ci) -{ - if ((0 != ci->children_num) || (1 != ci->values_num) - || (OCONFIG_TYPE_STRING != ci->values[0].type)) { - log_err ("Query expects a single string argument."); - return 1; - } - return set_query (db, ci->values[0].value.string); -} /* config_set_query */ - -static int c_psql_config_query (oconfig_item_t *ci) -{ - c_psql_query_t *query; - - int status = 0, col_num = 0, i; - - if ((1 != ci->values_num) - || (OCONFIG_TYPE_STRING != ci->values[0].type)) { - log_err (" expects a single string argument."); - return 1; - } - - query = c_psql_query_new (ci->values[0].value.string); - - for (i = 0; i < ci->children_num; ++i) { - oconfig_item_t *c = ci->children + i; - - if (0 == strcasecmp (c->key, "Statement")) - config_set_s ("Statement", &query->stmt, c); - /* backwards compat for versions < 4.6 */ - else if (0 == strcasecmp (c->key, "Query")) { - log_warn (": 'Query' is deprecated - use 'Statement' instead."); - config_set_s ("Query", &query->stmt, c); - } - else if (0 == strcasecmp (c->key, "Param")) - config_set_param (query, c); - else if (0 == strcasecmp (c->key, "Result")) - config_set_result (query, c); - /* backwards compat for versions < 4.6 */ - else if (0 == strcasecmp (c->key, "Column")) { - log_warn (": 'Column' is deprecated - " - "use a block instead."); - config_set_column (query, col_num, c); - ++col_num; - } - else if (0 == strcasecmp (c->key, "MinPGVersion")) - config_set_i ("MinPGVersion", &query->min_pg_version, c); - else if (0 == strcasecmp (c->key, "MaxPGVersion")) - config_set_i ("MaxPGVersion", &query->max_pg_version, c); - else - log_warn ("Ignoring unknown config key \"%s\".", c->key); - } - - for (i = 0; i < queries_num - 1; ++i) { - c_psql_query_t *q = queries + i; - - if ((0 == strcasecmp (q->name, query->name)) - && (q->min_pg_version <= query->max_pg_version) - && (query->min_pg_version <= q->max_pg_version)) { - log_err ("Ignoring redefinition (with overlapping version ranges) " - "of query \"%s\".", query->name); - status = 1; - break; - } - } - - if (query->min_pg_version > query->max_pg_version) { - log_err ("Query \"%s\": MinPGVersion > MaxPGVersion.", - query->name); - status = 1; - } - - if (NULL == query->stmt) { - log_err ("Query \"%s\" does not include an SQL query statement - " - "please check your configuration.", query->name); - status = 1; - } - - if (0 != status) { - c_psql_query_delete (query); - --queries_num; - return status; - } - return 0; -} /* c_psql_config_query */ + return (-1); +} /* config_query_callback */ static int c_psql_config_database (oconfig_item_t *ci) { @@ -1093,22 +616,21 @@ static int c_psql_config_database (oconfig_item_t *ci) else if (0 == strcasecmp (c->key, "Service")) config_set_s ("Service", &db->service, c); else if (0 == strcasecmp (c->key, "Query")) - config_set_query (db, c); + udb_query_pick_from_list (c, queries, queries_num, + &db->queries, &db->queries_num); else log_warn ("Ignoring unknown config key \"%s\".", c->key); } - if (NULL == db->queries) { - for (i = 0; i < def_queries_num; ++i) - set_query (db, def_queries[i]); + /* If no `Query' options were given, add the default queries.. */ + if (db->queries_num == 0) + { + for (i = 0; i < def_queries_num; i++) + udb_query_pick_from_list_by_name (def_queries[i], + queries, queries_num, + &db->queries, &db->queries_num); } - db->hidden_queries = (int *)calloc (db->queries_num, - sizeof (*db->hidden_queries)); - if (NULL == db->hidden_queries) { - log_err ("Out of memory."); - exit (5); - } return 0; } /* c_psql_config_database */ @@ -1138,7 +660,9 @@ static int c_psql_config (oconfig_item_t *ci) oconfig_item_t *c = ci->children + i; if (0 == strcasecmp (c->key, "Query")) - c_psql_config_query (c); + udb_query_create (&queries, &queries_num, c, + /* callback = */ config_query_callback, + /* legacy mode = */ 1); else if (0 == strcasecmp (c->key, "Database")) c_psql_config_database (c); else @@ -1154,4 +678,3 @@ void module_register (void) } /* module_register */ /* vim: set sw=4 ts=4 tw=78 noexpandtab : */ -