/*
 * Copyright (c) 2007      Los Alamos National Security, LLC.
 *                         All rights reserved. 
 * Copyright (c) 2007      Sun Microsystems, Inc.  All rights reserved.
 * Copyright (c) 2004-2008 The Trustees of Indiana University.
 *                         All rights reserved.
 * $COPYRIGHT$
 * 
 * Additional copyrights may follow
 * 
 * $HEADER$
 */

#include "orte_config.h"

#include "orte/util/output.h"
#include "opal/mca/mca.h"
#include "opal/mca/base/mca_base_component_repository.h"

#include "orte/util/output.h"
#include "orte/mca/errmgr/errmgr.h"

#include "orte/mca/routed/routed.h"
#include "orte/mca/routed/base/base.h"


/* The following file was created by configure.  It contains extern
 * statements and the definition of an array of pointers to each
 * component's public mca_base_component_t struct. */
#include "orte/mca/routed/base/static-components.h"


int orte_routed_base_output = -1;
orte_routed_module_t orte_routed;
opal_list_t orte_routed_base_components;

static orte_routed_component_t *active_component = NULL;
static bool component_open_called = false;

int
orte_routed_base_open(void)
{
    int ret;

    /* setup the output stream */
    orte_routed_base_output = orte_output_open(NULL);

    /* Initialize globals */
    OBJ_CONSTRUCT(&orte_routed_base_components, opal_list_t);
    
    /* Open up all available components */
    ret = mca_base_components_open("routed",
                                   orte_routed_base_output,
                                   mca_routed_base_static_components, 
                                   &orte_routed_base_components,
                                   true);
    component_open_called = true;

    return ret;
}


int
orte_routed_base_select(void)
{
    int ret, exit_status = OPAL_SUCCESS;
    orte_routed_component_t *best_component = NULL;
    orte_routed_module_t *best_module = NULL;

    /*
     * Select the best component
     */
    if( OPAL_SUCCESS != (ret = mca_base_select("routed", orte_routed_base_output,
                                               &orte_routed_base_components,
                                               (mca_base_module_t **) &best_module,
                                               (mca_base_component_t **) &best_component) ) ) {
        /* This will only happen if no component was selected */
        exit_status = ORTE_ERR_NOT_FOUND;
        goto cleanup;
    }

    /* Save the winner */
    orte_routed = *best_module;
    active_component = best_component;

    /* initialize the selected component */
    orte_output_verbose(10, orte_routed_base_output,
                        "orte_routed_base_select: initializing selected component %s",
                        best_component->base_version.mca_component_name);
    if (ORTE_SUCCESS != orte_routed.initialize()) {
        exit_status = ORTE_ERROR;
        goto cleanup;
    }

 cleanup:
    return exit_status;
}


int
orte_routed_base_close(void)
{
    /* finalize the selected component */
    if (NULL != orte_routed.finalize) {
        orte_routed.finalize();
    }
    
    /* shutdown any remaining opened components */
    if (component_open_called) {
        mca_base_components_close(orte_routed_base_output, 
                                  &orte_routed_base_components, NULL);
    }

    OBJ_DESTRUCT(&orte_routed_base_components);

    return ORTE_SUCCESS;
}