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diff --git a/tools/attrd_updater.c b/tools/attrd_updater.c
index d186886f07..3fa6ef2eaf 100644
--- a/tools/attrd_updater.c
+++ b/tools/attrd_updater.c
@@ -1,466 +1,467 @@
/*
* Copyright 2004-2020 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU General Public License version 2
* or later (GPLv2+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <libgen.h>
#include <sys/param.h>
#include <sys/types.h>
#include <crm/crm.h>
#include <crm/msg_xml.h>
#include <crm/common/ipc.h>
#include <crm/common/attrd_internal.h>
static pcmk__cli_option_t long_options[] = {
// long option, argument type, storage, short option, description, flags
{
"help", no_argument, NULL, '?',
"\tThis text", pcmk__option_default
},
{
"version", no_argument, NULL, '$',
"\tVersion information", pcmk__option_default
},
{
"verbose", no_argument, NULL, 'V',
"\tIncrease debug output\n", pcmk__option_default
},
{
"name", required_argument, NULL, 'n',
"The attribute's name", pcmk__option_default
},
{
"-spacer-", no_argument, NULL, '-',
"\nCommands:", pcmk__option_default
},
{
"update", required_argument, NULL, 'U',
"Update attribute's value in pacemaker-attrd. If this causes the value "
"to change, it will also be updated in the cluster configuration.",
pcmk__option_default
},
{
"update-both", required_argument, NULL, 'B',
"Update attribute's value and time to wait (dampening) in "
"pacemaker-attrd. If this causes the value or dampening to change, "
"the attribute will also be written to the cluster configuration, "
"so be aware that repeatedly changing the dampening reduces its "
"effectiveness.",
pcmk__option_default
},
{
"update-delay", no_argument, NULL, 'Y',
"Update attribute's dampening in pacemaker-attrd (requires "
"-d/--delay). If this causes the dampening to change, the "
"attribute will also be written to the cluster configuration, so "
"be aware that repeatedly changing the dampening reduces its "
"effectiveness.",
pcmk__option_default
},
{
"query", no_argument, NULL, 'Q',
"\tQuery the attribute's value from pacemaker-attrd",
pcmk__option_default
},
{
"delete", no_argument, NULL, 'D',
"\tDelete attribute from pacemaker-attrd. If a value was previously "
"set, it will also be removed from the cluster configuration",
pcmk__option_default
},
{
"refresh", no_argument, NULL, 'R',
"\t(Advanced) Force the pacemaker-attrd daemon to resend all current "
"values to the CIB",
pcmk__option_default
},
{
"-spacer-", no_argument, NULL, '-',
"\nAdditional options:", pcmk__option_default
},
{
"delay", required_argument, NULL, 'd',
"The time to wait (dampening) in seconds for further changes "
"before writing",
pcmk__option_default
},
{
"set", required_argument, NULL, 's',
"(Advanced) The attribute set in which to place the value",
pcmk__option_default
},
{
"node", required_argument, NULL, 'N',
"Set the attribute for the named node (instead of the local one)",
pcmk__option_default
},
{
"all", no_argument, NULL, 'A',
"Show values of the attribute for all nodes (query only)",
pcmk__option_default
},
// @TODO Implement --lifetime
{
"lifetime", required_argument, NULL, 'l',
"(Not yet implemented) Lifetime of the node attribute (silently "
"ignored by cluster)",
pcmk__option_default
},
{
"private", no_argument, NULL, 'p',
"\tIf this creates a new attribute, never write the attribute to CIB",
pcmk__option_default
},
/* Legacy options */
{
"quiet", no_argument, NULL, 'q',
NULL, pcmk__option_hidden
},
{
"update", required_argument, NULL, 'v',
NULL, pcmk__option_hidden
},
{
"section", required_argument, NULL, 'S',
NULL, pcmk__option_hidden
},
{ 0, 0, 0, 0 }
};
static int do_query(const char *attr_name, const char *attr_node, gboolean query_all);
static int do_update(char command, const char *attr_node, const char *attr_name,
const char *attr_value, const char *attr_section,
const char *attr_set, const char *attr_dampen, int attr_options);
// Free memory at exit to make analyzers happy
#define cleanup_memory() \
free(attr_dampen); \
free(attr_name); \
free(attr_node); \
free(attr_section); \
free(attr_set);
#define set_option(option_var) \
if (option_var) { \
free(option_var); \
} \
option_var = strdup(optarg);
int
main(int argc, char **argv)
{
int index = 0;
int argerr = 0;
int attr_options = pcmk__node_attr_none;
int flag;
crm_exit_t exit_code = CRM_EX_OK;
char *attr_node = NULL;
char *attr_name = NULL;
char *attr_set = NULL;
char *attr_section = NULL;
char *attr_dampen = NULL;
const char *attr_value = NULL;
char command = 'Q';
gboolean query_all = FALSE;
crm_log_cli_init("attrd_updater");
pcmk__set_cli_options(NULL, "-n <attribute> <command> [options]",
long_options,
"query and update Pacemaker node attributes");
if (argc < 2) {
pcmk__cli_help('?', CRM_EX_USAGE);
}
while (1) {
flag = pcmk__next_cli_option(argc, argv, &index, NULL);
if (flag == -1)
break;
switch (flag) {
case 'V':
crm_bump_log_level(argc, argv);
break;
case '?':
case '$':
cleanup_memory();
pcmk__cli_help(flag, CRM_EX_OK);
break;
case 'n':
set_option(attr_name);
break;
case 's':
set_option(attr_set);
break;
case 'd':
set_option(attr_dampen);
break;
case 'l':
case 'S':
set_option(attr_section);
break;
case 'N':
set_option(attr_node);
break;
case 'A':
query_all = TRUE;
break;
case 'p':
set_bit(attr_options, pcmk__node_attr_private);
break;
case 'q':
break;
case 'Y':
command = flag;
crm_log_args(argc, argv); /* Too much? */
break;
case 'Q':
case 'B':
case 'R':
case 'D':
case 'U':
case 'v':
command = flag;
attr_value = optarg;
crm_log_args(argc, argv); /* Too much? */
break;
default:
++argerr;
break;
}
}
if (optind > argc) {
++argerr;
}
if (command != 'R' && attr_name == NULL) {
++argerr;
}
if (argerr) {
cleanup_memory();
pcmk__cli_help('?', CRM_EX_USAGE);
}
if (command == 'Q') {
exit_code = crm_errno2exit(do_query(attr_name, attr_node, query_all));
} else {
/* @TODO We don't know whether the specified node is a Pacemaker Remote
* node or not, so we can't set pcmk__node_attr_remote when appropriate.
* However, it's not a big problem, because pacemaker-attrd will learn
* and remember a node's "remoteness".
*/
exit_code = pcmk_rc2exitc(do_update(command,
pcmk__node_attr_target(attr_node),
attr_name, attr_value,
attr_section, attr_set,
attr_dampen, attr_options));
}
cleanup_memory();
crm_exit(exit_code);
}
/*!
* \internal
* \brief Submit a query request to pacemaker-attrd and wait for reply
*
* \param[in] name Name of attribute to query
* \param[in] host Query applies to this host only (or all hosts if NULL)
* \param[out] reply On success, will be set to new XML tree with reply
*
* \return pcmk_ok on success, -errno on error
* \note On success, caller is responsible for freeing result via free_xml(*reply)
*/
static int
send_attrd_query(const char *name, const char *host, xmlNode **reply)
{
int rc;
crm_ipc_t *ipc;
xmlNode *query;
/* Build the query XML */
query = create_xml_node(NULL, __FUNCTION__);
if (query == NULL) {
return -ENOMEM;
}
crm_xml_add(query, F_TYPE, T_ATTRD);
crm_xml_add(query, F_ORIG, crm_system_name);
crm_xml_add(query, PCMK__XA_ATTR_NODE_NAME, host);
crm_xml_add(query, PCMK__XA_TASK, PCMK__ATTRD_CMD_QUERY);
crm_xml_add(query, PCMK__XA_ATTR_NAME, name);
/* Connect to pacemaker-attrd, send query XML and get reply */
crm_debug("Sending query for value of %s on %s", name, (host? host : "all nodes"));
ipc = crm_ipc_new(T_ATTRD, 0);
if (crm_ipc_connect(ipc) == FALSE) {
crm_perror(LOG_ERR, "Connection to cluster attribute manager failed");
rc = -ENOTCONN;
} else {
rc = crm_ipc_send(ipc, query, crm_ipc_flags_none|crm_ipc_client_response, 0, reply);
if (rc > 0) {
rc = pcmk_ok;
}
crm_ipc_close(ipc);
}
+ crm_ipc_destroy(ipc);
free_xml(query);
return(rc);
}
/*!
* \brief Validate pacemaker-attrd's XML reply to an query
*
* param[in] reply Root of reply XML tree to validate
* param[in] attr_name Name of attribute that was queried
*
* \return pcmk_ok on success,
* -errno on error (-ENXIO = requested attribute does not exist)
*/
static int
validate_attrd_reply(xmlNode *reply, const char *attr_name)
{
const char *reply_attr;
if (reply == NULL) {
fprintf(stderr, "Could not query value of %s: reply did not contain valid XML\n",
attr_name);
return -pcmk_err_schema_validation;
}
crm_log_xml_trace(reply, "Reply");
reply_attr = crm_element_value(reply, PCMK__XA_ATTR_NAME);
if (reply_attr == NULL) {
fprintf(stderr, "Could not query value of %s: attribute does not exist\n",
attr_name);
return -ENXIO;
}
if (safe_str_neq(crm_element_value(reply, F_TYPE), T_ATTRD)
|| (crm_element_value(reply, PCMK__XA_ATTR_VERSION) == NULL)
|| strcmp(reply_attr, attr_name)) {
fprintf(stderr,
"Could not query value of %s: reply did not contain expected identification\n",
attr_name);
return -pcmk_err_schema_validation;
}
return pcmk_ok;
}
/*!
* \brief Print the attribute values in a pacemaker-attrd XML query reply
*
* \param[in] reply Root of XML tree with query reply
* \param[in] attr_name Name of attribute that was queried
*
* \return TRUE if any values were printed
*/
static gboolean
print_attrd_values(xmlNode *reply, const char *attr_name)
{
xmlNode *child;
const char *reply_host, *reply_value;
gboolean have_values = FALSE;
/* Iterate through reply's XML tags (a node tag for each host-value pair) */
for (child = __xml_first_child(reply); child != NULL; child = __xml_next(child)) {
if (safe_str_neq((const char*)child->name, XML_CIB_TAG_NODE)) {
crm_warn("Ignoring unexpected %s tag in query reply", child->name);
} else {
reply_host = crm_element_value(child, PCMK__XA_ATTR_NODE_NAME);
reply_value = crm_element_value(child, PCMK__XA_ATTR_VALUE);
if (reply_host == NULL) {
crm_warn("Ignoring %s tag without %s attribute in query reply",
XML_CIB_TAG_NODE, PCMK__XA_ATTR_NODE_NAME);
} else {
printf("name=\"%s\" host=\"%s\" value=\"%s\"\n",
attr_name, reply_host, (reply_value? reply_value : ""));
have_values = TRUE;
}
}
}
return have_values;
}
/*!
* \brief Submit a query to pacemaker-attrd and print reply
*
* \param[in] attr_name Name of attribute to be affected by request
* \param[in] attr_node Name of host to query for (or NULL for localhost)
* \param[in] query_all If TRUE, ignore attr_node and query all nodes instead
*
* \return pcmk_ok on success, -errno on error
*/
static int
do_query(const char *attr_name, const char *attr_node, gboolean query_all)
{
xmlNode *reply = NULL;
int rc;
/* Decide which node(s) to query */
if (query_all == TRUE) {
attr_node = NULL;
} else {
attr_node = pcmk__node_attr_target(attr_node);
}
/* Build and send pacemaker-attrd request, and get XML reply */
rc = send_attrd_query(attr_name, attr_node, &reply);
if (rc != pcmk_ok) {
fprintf(stderr, "Could not query value of %s: %s (%d)\n", attr_name, pcmk_strerror(rc), rc);
return rc;
}
/* Validate the XML reply */
rc = validate_attrd_reply(reply, attr_name);
if (rc != pcmk_ok) {
if (reply != NULL) {
free_xml(reply);
}
return rc;
}
/* Print the values from the reply */
if (print_attrd_values(reply, attr_name) == FALSE) {
fprintf(stderr,
"Could not query value of %s: reply had attribute name but no host values\n",
attr_name);
free_xml(reply);
return -pcmk_err_schema_validation;
}
return pcmk_ok;
}
static int
do_update(char command, const char *attr_node, const char *attr_name,
const char *attr_value, const char *attr_section,
const char *attr_set, const char *attr_dampen, int attr_options)
{
int rc = pcmk__node_attr_request(NULL, command, attr_node, attr_name,
attr_value, attr_section, attr_set,
attr_dampen, NULL, attr_options);
if (rc != pcmk_rc_ok) {
fprintf(stderr, "Could not update %s=%s: %s (%d)\n",
attr_name, attr_value, pcmk_rc_str(rc), rc);
}
return rc;
}

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