181 строка
6.8 KiB
C
181 строка
6.8 KiB
C
/*
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* Copyright (c) 2013 Intel, Inc. All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*
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* These symbols are in a file by themselves to provide nice linker
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* semantics. Since linkers generally pull in symbols by object
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* files, keeping these symbols as the only symbols in this file
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* prevents utility programs such as "ompi_info" from having to import
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* entire components just to query their version and parameters.
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*/
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#include "opal_config.h"
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#include "opal/constants.h"
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#include "opal/mca/base/base.h"
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#include "opal/mca/base/mca_base_var.h"
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#include "opal/mca/db/db.h"
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#include "opal/mca/db/base/base.h"
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#include "db_postgres.h"
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extern opal_db_base_module_t opal_db_postgres_module;
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char *opal_db_postgres_file;
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static int postgres_component_open(void);
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static int postgres_component_close(void);
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static int postgres_component_query(opal_db_base_module_t **module,
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int *store_priority,
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int *fetch_priority,
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bool restrict_local);
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static int postgres_component_register(void);
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/*
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* Instantiate the public struct with all of our public information
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* and pointers to our public functions in it
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*/
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opal_db_postgres_component_t mca_db_postgres_component = {
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{
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{
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OPAL_DB_BASE_VERSION_1_0_0,
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/* Component name and version */
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"postgres",
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OPAL_MAJOR_VERSION,
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OPAL_MINOR_VERSION,
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OPAL_RELEASE_VERSION,
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/* Component open and close functions */
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postgres_component_open,
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postgres_component_close,
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NULL,
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postgres_component_register
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},
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{
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/* The component is checkpoint ready */
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MCA_BASE_METADATA_PARAM_CHECKPOINT
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},
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postgres_component_query
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}
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};
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static int postgres_component_open(void)
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{
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return OPAL_SUCCESS;
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}
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static int postgres_component_query(opal_db_base_module_t **module,
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int *store_priority,
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int *fetch_priority,
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bool restrict_local)
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{
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if (NULL != mca_db_postgres_component.dbname &&
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NULL != mca_db_postgres_component.table &&
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NULL != mca_db_postgres_component.user &&
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NULL != mca_db_postgres_component.pguri) {
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*store_priority = 3; /* ahead of sqlite3 */
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*fetch_priority = 3;
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*module = &opal_db_postgres_module;
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return OPAL_SUCCESS;
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}
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*store_priority = 0;
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*fetch_priority = 0;
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*module = NULL;
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return OPAL_ERROR;
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}
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static int postgres_component_close(void)
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{
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if (NULL != mca_db_postgres_component.dbname) {
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free(mca_db_postgres_component.dbname);
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}
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if (NULL != mca_db_postgres_component.table) {
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free(mca_db_postgres_component.table);
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}
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if (NULL != mca_db_postgres_component.user) {
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free(mca_db_postgres_component.user);
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}
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if (NULL != mca_db_postgres_component.pguri) {
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free(mca_db_postgres_component.pguri);
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}
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if (NULL != mca_db_postgres_component.pgoptions) {
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free(mca_db_postgres_component.pgoptions);
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}
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if (NULL != mca_db_postgres_component.pgtty) {
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free(mca_db_postgres_component.pgtty);
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}
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return OPAL_SUCCESS;
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}
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static int postgres_component_register(void) {
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mca_base_component_t *c = &mca_db_postgres_component.super.base_version;
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/* retrieve the name of the database to be used */
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mca_db_postgres_component.dbname = NULL;
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(void) mca_base_component_var_register (c, "database", "Name of database",
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MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&mca_db_postgres_component.dbname);
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/* retrieve the name of the table to be used */
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mca_db_postgres_component.table = NULL;
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(void) mca_base_component_var_register (c, "table", "Name of table",
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MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&mca_db_postgres_component.table);
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/* retrieve the name of the user to be used */
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mca_db_postgres_component.user = NULL;
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(void) mca_base_component_var_register (c, "user", "Name of database user:password",
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MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&mca_db_postgres_component.table);
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/* retrieve the server:port */
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mca_db_postgres_component.pguri = NULL;
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(void) mca_base_component_var_register (c, "uri", "Contact info for Postgres server as ip:port",
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MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&mca_db_postgres_component.pguri);
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/* retrieve any options to be used */
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mca_db_postgres_component.pgoptions = NULL;
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(void) mca_base_component_var_register (c, "options", "Options to pass to the database",
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MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&mca_db_postgres_component.pgoptions);
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/* retrieve the tty argument */
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mca_db_postgres_component.pgtty = NULL;
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(void) mca_base_component_var_register (c, "tty", "TTY option for database",
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MCA_BASE_VAR_TYPE_STRING, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&mca_db_postgres_component.pgtty);
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/* retrieve the number of worker threads to be used */
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mca_db_postgres_component.num_worker_threads = 0;
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(void) mca_base_component_var_register (c, "num_worker_threads",
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"Number of worker threads to be used",
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MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
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OPAL_INFO_LVL_9,
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MCA_BASE_VAR_SCOPE_READONLY,
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&mca_db_postgres_component.num_worker_threads);
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return OPAL_SUCCESS;
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}
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