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/*
* Copyright 2011-2022 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <crm_internal.h>
#include <stdio.h>
#include <crm/msg_xml.h>
#include <crm/common/attrd_internal.h>
#define LRM_TARGET_ENV "OCF_RESKEY_" CRM_META "_" XML_LRM_ATTR_TARGET
/*!
* \internal
* \brief Get the node name that should be used to set node attributes
*
* If given NULL, "auto", or "localhost" as an argument, check the environment
* to detect the node name that should be used to set node attributes. (The
* caller might not know the correct name, for example if the target is part of
* a bundle with container-attribute-target set to "host".)
*
* \param[in] name NULL, "auto" or "localhost" to check environment variables,
* or anything else to return NULL
*
* \return Node name that should be used for node attributes based on the
* environment if known, otherwise NULL
*/
const char *
pcmk__node_attr_target(const char *name)
{
if (name == NULL || pcmk__strcase_any_of(name, "auto", "localhost", NULL)) {
char *target_var = crm_meta_name(XML_RSC_ATTR_TARGET);
char *phys_var = crm_meta_name(PCMK__ENV_PHYSICAL_HOST);
const char *target = getenv(target_var);
const char *host_physical = getenv(phys_var);
// It is important to use the name by which the scheduler knows us
if (host_physical && pcmk__str_eq(target, "host", pcmk__str_casei)) {
name = host_physical;
} else {
const char *host_pcmk = getenv(LRM_TARGET_ENV);
if (host_pcmk) {
name = host_pcmk;
}
}
free(target_var);
free(phys_var);
// TODO? Call get_local_node_name() if name == NULL
// (currently would require linkage against libcrmcluster)
return name;
} else {
return NULL;
}
}
/*!
* \brief Return the name of the node attribute used as a promotion score
*
* \param[in] rsc_id Resource ID that promotion score is for (or NULL to
* check the OCF_RESOURCE_INSTANCE environment variable)
*
* \return Newly allocated string with the node attribute name (or NULL on
* error, including no ID or environment variable specified)
* \note It is the caller's responsibility to free() the result.
*/
char *
pcmk_promotion_score_name(const char *rsc_id)
{
if (pcmk__str_empty(rsc_id)) {
rsc_id = getenv("OCF_RESOURCE_INSTANCE");
if (pcmk__str_empty(rsc_id)) {
return NULL;
}
}
return crm_strdup_printf("master-%s", rsc_id);
}
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