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noit_conf_checks.c
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noit_conf_checks.c
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/*
* Copyright (c) 2007, OmniTI Computer Consulting, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name OmniTI Computer Consulting, Inc. nor the names
* of its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "noit_defines.h"
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <assert.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <libxml/xpath.h>
#include "noit_conf.h"
#include "noit_conf_private.h"
#include "noit_conf_checks.h"
#include "noit_check.h"
#include "noit_check_tools.h"
#include "noit_filters.h"
#include "noit_console.h"
#include "utils/noit_hash.h"
#include "utils/noit_log.h"
static void register_console_config_check_commands();
static struct _valid_attr_t {
const char *scope;
const char *name;
const char *xpath;
int checks_fixate;
} valid_attrs[] = {
{ "/checks", "name", "@name", 0 },
{ "/checks", "target", "@target", 0 },
{ "/checks", "period", "@period", 0 },
{ "/checks", "timeout", "@timeout", 0 },
{ "/checks", "oncheck", "@oncheck", 0 },
{ "/checks", "disable", "@disable", 0 },
{ "/checks", "resolve_rtype", "@resolve_rtype", 0 },
{ "/checks", "filterset", "@filterset", 0 },
{ "/checks", "module", "@module", 1 },
{ "/filtersets", "target", "@target", 0 },
{ "/filtersets", "module", "@module", 0 },
{ "/filtersets", "name", "@name", 0 },
{ "/filtersets", "metric", "@metric", 0 },
};
void
noit_console_state_add_check_attrs(noit_console_state_t *state,
console_cmd_func_t f,
const char *scope) {
int i;
for(i = 0;
i < sizeof(valid_attrs)/sizeof(valid_attrs[0]);
i++) {
if(strcmp(valid_attrs[i].scope, scope)) continue;
noit_console_state_add_cmd(state,
NCSCMD(valid_attrs[i].name, f, NULL,
NULL, &valid_attrs[i]));
}
}
static noit_hash_table check_attrs = NOIT_HASH_EMPTY;
void noit_console_conf_checks_init() {
int i;
for(i=0;i<sizeof(valid_attrs)/sizeof(*valid_attrs);i++) {
noit_hash_store(&check_attrs,
valid_attrs[i].name, strlen(valid_attrs[i].name),
&valid_attrs[i]);
}
register_console_config_check_commands();
}
static int
noit_console_mkcheck_xpath(char *xpath, int len,
noit_conf_t_userdata_t *info,
const char *arg) {
int rv;
rv = noit_check_xpath(xpath, len, "/", arg);
if(rv == -1) return -1;
if(rv == 0) {
char *path = (!info || !strcmp(info->path, "/")) ? "" : info->path;
snprintf(xpath, len, "/noit%s%s%s[@uuid]",
path, arg ? "/" : "", arg ? arg : "");
}
return 0;
}
static void
nc_attr_show(noit_console_closure_t ncct, const char *name, xmlNodePtr cnode,
xmlNodePtr anode, const char *value) {
char *cpath, *apath;
cpath = cnode ? (char *)xmlGetNodePath(cnode) : strdup("");
apath = anode ? (char *)xmlGetNodePath(anode) : strdup("");
nc_printf(ncct, " %s: %s", name, value ? value : "[undef]");
if(value && cpath && apath) {
int clen = strlen(cpath);
int plen = strlen("/noit/checks/");
if(!strncmp(cpath, apath, clen) && apath[clen] == '/') {
/* we have a match, which means it isn't inherited */
}
else {
nc_printf(ncct, " [inherited from %s]",
strlen(apath) > plen ? apath + plen : apath);
}
}
nc_write(ncct, "\n", 1);
if(cpath) free(cpath);
if(apath) free(apath);
}
static void
refresh_subchecks(noit_console_closure_t ncct,
noit_conf_t_userdata_t *info) {
char *path;
char xpath[1024];
path = info->path;
if(!strcmp(path, "/")) path = "";
/* The first one is just a process_checks, the second is the reload.
* Reload does a lot of work and there is no need to do it twice.
*/
snprintf(xpath, sizeof(xpath), "/noit/%s[@uuid]", path);
noit_poller_process_checks(xpath);
snprintf(xpath, sizeof(xpath), "/noit/%s//check[@uuid]", path);
noit_poller_reload(xpath);
}
static int
noit_config_check_update_attrs(xmlNodePtr node, int argc, char **argv) {
int i, error = 0;
if(argc % 2) return -1;
for(i=0; i<argc; i+=2) {
void *vattrinfo;
struct _valid_attr_t *attrinfo;
char *attr = argv[i], *val = NULL;
if(!strcasecmp(argv[i], "no")) attr = argv[i+1];
else val = argv[i+1];
if(!noit_hash_retrieve(&check_attrs, attr, strlen(attr),
&vattrinfo)) {
error = 1;
break;
}
attrinfo = vattrinfo;
/* The fixation stuff doesn't matter here, this check is brand-new */
xmlUnsetProp(node, (xmlChar *)attrinfo->name);
if(val)
xmlSetProp(node, (xmlChar *)attrinfo->name, (xmlChar *)val);
CONF_DIRTY(node);
noit_conf_mark_changed();
}
return error;
}
static int
noit_conf_mkcheck_under(const char *ppath, int argc, char **argv, uuid_t out) {
int rv = -1;
const char *path;
char xpath[1024];
xmlXPathContextPtr xpath_ctxt = NULL;
xmlXPathObjectPtr pobj = NULL;
xmlNodePtr node = NULL, newnode;
/* attr val [or] no attr (sets of two) */
if(argc % 2) goto out;
noit_conf_xml_xpath(NULL, &xpath_ctxt);
path = strcmp(ppath, "/") ? ppath : "";
snprintf(xpath, sizeof(xpath), "/noit%s", path);
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET ||
xmlXPathNodeSetGetLength(pobj->nodesetval) != 1) {
goto out;
}
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, 0);
if((newnode = xmlNewChild(node, NULL, (xmlChar *)"check", NULL)) != NULL) {
char outstr[37];
uuid_generate(out);
uuid_unparse_lower(out, outstr);
xmlSetProp(newnode, (xmlChar *)"uuid", (xmlChar *)outstr);
xmlSetProp(newnode, (xmlChar *)"disable", (xmlChar *)"true");
/* No risk of running off the end (we checked this above) */
if(noit_config_check_update_attrs(newnode, argc, argv)) {
/* Something went wrong, remove the node */
xmlUnlinkNode(newnode);
}
else {
CONF_DIRTY(newnode);
noit_conf_mark_changed();
rv = 0;
}
}
out:
if(pobj) xmlXPathFreeObject(pobj);
return rv;
}
static int
noit_console_check(noit_console_closure_t ncct,
int argc, char **argv,
noit_console_state_t *state, void *closure) {
int cnt;
noit_conf_t_userdata_t *info;
char xpath[1024], newuuid_str[37];
char *uuid_conf = NULL, *wanted;
uuid_t checkid;
xmlXPathContextPtr xpath_ctxt = NULL;
xmlXPathObjectPtr pobj = NULL;
xmlNodePtr node = NULL;
noit_boolean creating_new = noit_false;
if(closure) {
char *fake_argv[1] = { ".." };
noit_console_state_pop(ncct, 0, argv, NULL, NULL);
noit_console_config_cd(ncct, 1, fake_argv, NULL, NULL);
}
noit_conf_xml_xpath(NULL, &xpath_ctxt);
if(argc < 1) {
nc_printf(ncct, "requires at least one argument\n");
return -1;
}
if(argc % 2 == 0) {
nc_printf(ncct, "wrong number of arguments\n");
return -1;
}
info = noit_console_userdata_get(ncct, NOIT_CONF_T_USERDATA);
wanted = strcmp(argv[0], "new") ? argv[0] : NULL;
if(info && !wanted) {
/* We are creating a new node */
uuid_t out;
creating_new = noit_true;
if(strncmp(info->path, "/checks/", strlen("/checks/")) &&
strcmp(info->path, "/checks")) {
nc_printf(ncct, "New checks must be under /checks/\n");
return -1;
}
if(noit_conf_mkcheck_under(info->path, argc - 1, argv + 1, out)) {
nc_printf(ncct, "Error creating new check\n");
return -1;
}
newuuid_str[0] = '\0';
uuid_unparse_lower(out, newuuid_str);
wanted = newuuid_str;
}
/* We many not be in conf-t mode -- that's fine */
if(noit_console_mkcheck_xpath(xpath, sizeof(xpath), info, wanted)) {
nc_printf(ncct, "could not find check '%s'\n", wanted);
return -1;
}
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET ||
xmlXPathNodeSetIsEmpty(pobj->nodesetval)) {
nc_printf(ncct, "no checks found for '%s'\n", wanted);
goto out;
}
cnt = xmlXPathNodeSetGetLength(pobj->nodesetval);
if(info && cnt != 1) {
nc_printf(ncct, "Ambiguous check specified\n");
goto out;
}
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, 0);
uuid_conf = (char *)xmlGetProp(node, (xmlChar *)"uuid");
if(!uuid_conf || uuid_parse(uuid_conf, checkid)) {
nc_printf(ncct, "%s has invalid or missing UUID!\n",
(char *)xmlGetNodePath(node) + strlen("/noit"));
goto out;
}
if(argc > 1 && !creating_new)
if(noit_config_check_update_attrs(node, argc - 1, argv + 1))
nc_printf(ncct, "Partially successful, error setting some attributes\n");
if(info) {
char *xmlpath;
if(info->path) free(info->path);
xmlpath = (char *)xmlGetNodePath(node);
info->path = strdup(xmlpath + strlen("/noit"));
free(xmlpath);
uuid_copy(info->current_check, checkid);
if(argc > 1) refresh_subchecks(ncct, info);
if(state) {
noit_console_state_push_state(ncct, state);
noit_console_state_init(ncct);
}
goto out;
}
out:
if(uuid_conf) free(uuid_conf);
if(pobj) xmlXPathFreeObject(pobj);
return 0;
}
static int
noit_console_watch_check(noit_console_closure_t ncct,
int argc, char **argv,
noit_console_state_t *state, void *closure) {
int i, cnt;
int adding = (int)(vpsized_int)closure;
int period = 0;
char xpath[1024];
xmlXPathObjectPtr pobj = NULL;
xmlXPathContextPtr xpath_ctxt = NULL;
noit_conf_xml_xpath(NULL, &xpath_ctxt);
if(argc < 1 || argc > 2) {
nc_printf(ncct, "requires one or two arguments\n");
return -1;
}
/* An alternate period */
if(argc == 2) period = atoi(argv[1]);
if(noit_console_mkcheck_xpath(xpath, sizeof(xpath), NULL,
argc ? argv[0] : NULL)) {
nc_printf(ncct, "ERROR: could not find check '%s'\n", argv[0]);
return -1;
}
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET ||
xmlXPathNodeSetIsEmpty(pobj->nodesetval)) {
nc_printf(ncct, "no checks found\n");
goto out;
}
cnt = xmlXPathNodeSetGetLength(pobj->nodesetval);
for(i=0; i<cnt; i++) {
uuid_t checkid;
noit_check_t *check;
xmlNodePtr node;
char *uuid_conf;
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, i);
uuid_conf = (char *)xmlGetProp(node, (xmlChar *)"uuid");
if(!uuid_conf || uuid_parse(uuid_conf, checkid)) {
nc_printf(ncct, "%s has invalid or missing UUID!\n",
(char *)xmlGetNodePath(node) + strlen("/noit"));
continue;
}
if(period == 0) {
check = noit_poller_lookup(checkid);
if(!check) continue;
if(adding) noit_check_transient_add_feed(check, ncct->feed_path);
else noit_check_transient_remove_feed(check, ncct->feed_path);
}
else {
if(adding) {
check = noit_check_watch(checkid, period);
/* This check must be watched from the console */
noit_check_transient_add_feed(check, ncct->feed_path);
/* Note the check */
noit_check_log_check(check);
/* kick it off, if it isn't running already */
if(!NOIT_CHECK_LIVE(check)) noit_check_activate(check);
}
else {
check = noit_check_get_watch(checkid, period);
if(check) noit_check_transient_remove_feed(check, ncct->feed_path);
}
}
}
out:
if(pobj) xmlXPathFreeObject(pobj);
return 0;
}
static int
_qsort_string_compare(const void *i1, const void *i2) {
const char *s1 = ((const char **)i1)[0];
const char *s2 = ((const char **)i2)[0];
return strcasecmp(s1, s2);
}
static int
noit_console_show_check(noit_console_closure_t ncct,
int argc, char **argv,
noit_console_state_t *state, void *closure) {
int i, cnt;
noit_conf_t_userdata_t *info;
char xpath[1024];
xmlXPathObjectPtr pobj = NULL;
xmlXPathContextPtr xpath_ctxt = NULL;
noit_conf_xml_xpath(NULL, &xpath_ctxt);
if(argc > 1) {
nc_printf(ncct, "requires zero or one arguments\n");
return -1;
}
info = noit_console_userdata_get(ncct, NOIT_CONF_T_USERDATA);
/* We many not be in conf-t mode -- that's fine */
if(noit_console_mkcheck_xpath(xpath, sizeof(xpath), info,
argc ? argv[0] : NULL)) {
nc_printf(ncct, "could not find check '%s'\n", argv[0]);
return -1;
}
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET ||
xmlXPathNodeSetIsEmpty(pobj->nodesetval)) {
nc_printf(ncct, "no checks found\n");
goto out;
}
cnt = xmlXPathNodeSetGetLength(pobj->nodesetval);
if(info && cnt != 1) {
nc_printf(ncct, "Ambiguous check specified\n");
goto out;
}
for(i=0; i<cnt; i++) {
noit_hash_iter iter = NOIT_HASH_ITER_ZERO;
const char *k;
int klen;
void *data;
uuid_t checkid;
noit_check_t *check;
noit_hash_table *config;
xmlNodePtr node, anode, mnode = NULL;
char *uuid_conf;
char *module, *value;
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, i);
uuid_conf = (char *)xmlGetProp(node, (xmlChar *)"uuid");
if(!uuid_conf || uuid_parse(uuid_conf, checkid)) {
nc_printf(ncct, "%s has invalid or missing UUID!\n",
(char *)xmlGetNodePath(node) + strlen("/noit"));
continue;
}
nc_printf(ncct, "==== %s ====\n", uuid_conf);
free(uuid_conf);
#define MYATTR(a,n,b) _noit_conf_get_string(node, &(n), "@" #a, &(b))
#define INHERIT(a,n,b) \
_noit_conf_get_string(node, &(n), "ancestor-or-self::node()/@" #a, &(b))
#define SHOW_ATTR(a) do { \
anode = NULL; \
value = NULL; \
INHERIT(a, anode, value); \
nc_attr_show(ncct, #a, node, anode, value); \
if(value != NULL) free(value); \
} while(0)
if(!INHERIT(module, mnode, module)) module = NULL;
if(MYATTR(name, anode, value)) {
nc_printf(ncct, " name: %s\n", value);
free(value);
}
else
nc_printf(ncct, " name: %s [from module]\n", module ? module : "[undef]");
nc_attr_show(ncct, "module", node, mnode, module);
if(module) free(module);
SHOW_ATTR(target);
SHOW_ATTR(resolve_rtype);
SHOW_ATTR(period);
SHOW_ATTR(timeout);
SHOW_ATTR(oncheck);
SHOW_ATTR(filterset);
SHOW_ATTR(disable);
/* Print out all the config settings */
config = noit_conf_get_hash(node, "config");
while(noit_hash_next(config, &iter, &k, &klen, &data)) {
nc_printf(ncct, " config::%s: %s\n", k, (const char *)data);
}
noit_hash_destroy(config, free, free);
free(config);
check = noit_poller_lookup(checkid);
if(!check) {
nc_printf(ncct, " ERROR: not in running system\n");
}
else {
int idx = 0;
nc_printf(ncct, " target_ip: %s\n", check->target_ip);
nc_printf(ncct, " currently: ");
if(NOIT_CHECK_RUNNING(check)) nc_printf(ncct, "%srunning", idx++?",":"");
if(NOIT_CHECK_KILLED(check)) nc_printf(ncct, "%skilled", idx++?",":"");
if(!NOIT_CHECK_CONFIGURED(check)) nc_printf(ncct, "%sunconfig", idx++?",":"");
if(NOIT_CHECK_DISABLED(check)) nc_printf(ncct, "%sdisabled", idx++?",":"");
if(!idx) nc_printf(ncct, "idle");
nc_write(ncct, "\n", 1);
if (check->fire_event != NULL) {
struct timeval now, diff;
gettimeofday(&now, NULL);
sub_timeval(check->fire_event->whence, now, &diff);
nc_printf(ncct, " next run: %0.3f seconds\n",
diff.tv_sec + (diff.tv_usec / 1000000.0));
}
else {
nc_printf(ncct, " next run: unscheduled\n");
}
if(check->stats.current.whence.tv_sec == 0) {
nc_printf(ncct, " last run: never\n");
}
else {
stats_t *c = &check->stats.current;
int mcount=0;
const char **sorted_keys;
char buff[256];
struct timeval now, diff;
noit_boolean filtered;
gettimeofday(&now, NULL);
sub_timeval(now, c->whence, &diff);
nc_printf(ncct, " last run: %0.3f seconds ago\n",
diff.tv_sec + (diff.tv_usec / 1000000.0));
nc_printf(ncct, " availability/state: %s/%s\n",
noit_check_available_string(c->available),
noit_check_state_string(c->state));
nc_printf(ncct, " status: %s\n", c->status ? c->status : "[[null]]");
nc_printf(ncct, " feeds: %d\n", check->feeds ? check->feeds->size : 0);
nc_printf(ncct, " metrics:\n");
memset(&iter, 0, sizeof(iter));
sorted_keys = alloca(c->metrics.size * sizeof(*sorted_keys));
while(noit_hash_next(&c->metrics, &iter, &k, &klen, &data)) {
if(sorted_keys) sorted_keys[mcount++] = k;
else {
noit_stats_snprint_metric(buff, sizeof(buff), (metric_t *)data);
filtered = !noit_apply_filterset(check->filterset, check, (metric_t *)data);
nc_printf(ncct, " %c%s\n", filtered ? '*' : ' ', buff);
}
}
if(sorted_keys) {
int j;
qsort(sorted_keys, mcount, sizeof(*sorted_keys),
_qsort_string_compare);
for(j=0;j<mcount;j++) {
if(noit_hash_retrieve(&c->metrics,
sorted_keys[j], strlen(sorted_keys[j]),
&data)) {
noit_stats_snprint_metric(buff, sizeof(buff), (metric_t *)data);
filtered = !noit_apply_filterset(check->filterset, check, (metric_t *)data);
nc_printf(ncct, " %c%s\n", filtered ? '*' : ' ', buff);
}
}
}
}
}
}
out:
if(pobj) xmlXPathFreeObject(pobj);
return 0;
}
static int
noit_console_config_nocheck(noit_console_closure_t ncct,
int argc, char **argv,
noit_console_state_t *state, void *closure) {
int i, cnt;
const char *err = "internal error";
noit_conf_t_userdata_t *info;
xmlXPathObjectPtr pobj = NULL;
xmlXPathContextPtr xpath_ctxt = NULL;
char xpath[1024];
uuid_t checkid;
noit_conf_xml_xpath(NULL, &xpath_ctxt);
if(argc < 1) {
nc_printf(ncct, "requires one argument\n");
return -1;
}
info = noit_console_userdata_get(ncct, NOIT_CONF_T_USERDATA);
if(noit_console_mkcheck_xpath(xpath, sizeof(xpath), info, argv[0])) {
nc_printf(ncct, "could not find check '%s'\n", argv[0]);
return -1;
}
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET ||
xmlXPathNodeSetIsEmpty(pobj->nodesetval)) {
err = "no checks found";
goto bad;
}
cnt = xmlXPathNodeSetGetLength(pobj->nodesetval);
for(i=0; i<cnt; i++) {
xmlNodePtr node;
char *uuid_conf;
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, i);
uuid_conf = (char *)xmlGetProp(node, (xmlChar *)"uuid");
if(!uuid_conf || uuid_parse(uuid_conf, checkid)) {
nc_printf(ncct, "%s has invalid or missing UUID!\n",
(char *)xmlGetNodePath(node) + strlen("/noit"));
}
else {
if(argc > 1) {
int j;
for(j=1;j<argc;j++)
xmlUnsetProp(node, (xmlChar *)argv[j]);
CONF_DIRTY(node);
} else {
nc_printf(ncct, "descheduling %s\n", uuid_conf);
noit_poller_deschedule(checkid);
CONF_REMOVE(node);
xmlUnlinkNode(node);
}
noit_conf_mark_changed();
}
}
if(argc > 1) {
noit_poller_process_checks(xpath);
noit_poller_reload(xpath);
}
nc_printf(ncct, "rebuilding causal map...\n");
noit_poller_make_causal_map();
if(pobj) xmlXPathFreeObject(pobj);
return 0;
bad:
if(pobj) xmlXPathFreeObject(pobj);
nc_printf(ncct, "%s\n", err);
return -1;
}
static int
noit_console_config_show(noit_console_closure_t ncct,
int argc, char **argv,
noit_console_state_t *state, void *closure) {
noit_hash_iter iter = NOIT_HASH_ITER_ZERO;
const char *k;
int klen;
void *data;
int i, cnt, titled = 0, cliplen = 0;
const char *path = "", *basepath = NULL;
char xpath[1024];
noit_conf_t_userdata_t *info = NULL;
noit_hash_table *config;
xmlXPathObjectPtr pobj = NULL;
xmlXPathContextPtr xpath_ctxt = NULL, current_ctxt;
xmlDocPtr master_config = NULL;
xmlNodePtr node = NULL;
noit_conf_xml_xpath(&master_config, &xpath_ctxt);
if(argc > 1) {
nc_printf(ncct, "too many arguments\n");
return -1;
}
info = noit_console_userdata_get(ncct, NOIT_CONF_T_USERDATA);
if(info && info->path) path = basepath = info->path;
if(!info && argc == 0) {
nc_printf(ncct, "argument required when not in configuration mode\n");
return -1;
}
if(argc == 1) path = argv[0];
if(!basepath) basepath = path;
/* { / } is a special case */
if(!strcmp(basepath, "/")) basepath = "";
if(!strcmp(path, "/")) path = "";
if(!master_config) {
nc_printf(ncct, "no config\n");
return -1;
}
/* { / } is the only path that will end with a /
* in XPath { / / * } means something _entirely different than { / * }
* Ever notice how it is hard to describe xpath in C comments?
*/
/* We don't want to show the root node */
cliplen = strlen("/noit/");
/* If we are in configuration mode
* and we are without an argument or the argument is absolute,
* clip the current path off */
if(info && (argc == 0 || path[0] != '/')) cliplen += strlen(basepath);
if(!path[0] || path[0] == '/') /* base only, or absolute path requested */
snprintf(xpath, sizeof(xpath), "/noit%s/@*", path);
else
snprintf(xpath, sizeof(xpath), "/noit%s/%s/@*", basepath, path);
current_ctxt = xpath_ctxt;
pobj = xmlXPathEval((xmlChar *)xpath, current_ctxt);
if(!pobj || pobj->type != XPATH_NODESET) {
nc_printf(ncct, "no such object\n");
goto bad;
}
cnt = xmlXPathNodeSetGetLength(pobj->nodesetval);
titled = 0;
for(i=0; i<cnt; i++) {
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, i);
if(!strcmp((char *)node->name, "check")) continue;
if(node->children && node->children == xmlGetLastChild(node) &&
xmlNodeIsText(node->children)) {
char *node_str, *xmlpath;
node_str = (char *)xmlXPathCastNodeToString(node->children);
xmlpath = (char *)xmlGetNodePath(node);
if(!titled++) nc_printf(ncct, "== Section Settings ==\n");
nc_printf(ncct, "%s: %s\n", xmlpath + cliplen, node_str);
free(xmlpath);
free(node_str);
}
}
xmlXPathFreeObject(pobj);
/* Print out all the config settings */
if(!path[0] || path[0] == '/') /* base only, or absolute path requested */
snprintf(xpath, sizeof(xpath), "/noit%s", path);
else
snprintf(xpath, sizeof(xpath), "/noit%s/%s", basepath, path);
pobj = xmlXPathEval((xmlChar *)xpath, current_ctxt);
if(!pobj || pobj->type != XPATH_NODESET) {
nc_printf(ncct, "no such object\n");
goto bad;
}
cnt = xmlXPathNodeSetGetLength(pobj->nodesetval);
if(cnt > 0) {
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, 0);
titled = 0;
config = noit_conf_get_hash(node, "config");
while(noit_hash_next(config, &iter, &k, &klen, &data)) {
if(!titled++) nc_printf(ncct, "== Section [Aggregated] Config ==\n");
nc_printf(ncct, "config::%s: %s\n", k, (const char *)data);
}
noit_hash_destroy(config, free, free);
free(config);
}
xmlXPathFreeObject(pobj);
/* _shorten string_ turning last { / @ * } to { / * } */
if(!path[0] || path[0] == '/') /* base only, or absolute path requested */
snprintf(xpath, sizeof(xpath), "/noit%s/*", path);
else
snprintf(xpath, sizeof(xpath), "/noit%s/%s/*", basepath, path);
pobj = xmlXPathEval((xmlChar *)xpath, current_ctxt);
if(!pobj || pobj->type != XPATH_NODESET) {
nc_printf(ncct, "no such object\n");
goto bad;
}
cnt = xmlXPathNodeSetGetLength(pobj->nodesetval);
titled = 0;
for(i=0; i<cnt; i++) {
char *xmlpath;
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, i);
if(!strcmp((char *)node->name, "check")) continue;
if(!strcmp((char *)node->name, "filterset")) continue;
xmlpath = (char *)xmlGetNodePath(node);
if(strcmp(xmlpath + cliplen, "config")) {
if(!(node->children && node->children == xmlGetLastChild(node) &&
xmlNodeIsText(node->children))) {
if(!titled++) nc_printf(ncct, "== Subsections ==\n");
nc_printf(ncct, "%s\n", xmlpath + cliplen);
}
}
free(xmlpath);
}
titled = 0;
for(i=0; i<cnt; i++) {
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, i);
if(!strcmp((char *)node->name, "filterset")) {
xmlAttr *attr;
char *filter_name = NULL;
for(attr=node->properties; attr; attr = attr->next) {
if(!strcmp((char *)attr->name, "name"))
filter_name = (char *)xmlXPathCastNodeToString(attr->children);
}
if(filter_name) {
nc_printf(ncct, "filterset[@name=\"%s\"]\n", filter_name);
xmlFree(filter_name);
}
else nc_printf(ncct, "fitlerset\n");
}
else if(!strcmp((char *)node->name, "check")) {
int busted = 1;
xmlAttr *attr;
char *uuid_str = NULL;
uuid_t checkid;
if(!titled++) nc_printf(ncct, "== Checks ==\n");
for(attr=node->properties; attr; attr = attr->next) {
if(!strcmp((char *)attr->name, "uuid")) {
uuid_str = (char *)xmlXPathCastNodeToString(attr->children);
break;
}
}
nc_printf(ncct, "check[@uuid=\"%s\"] ", uuid_str ? uuid_str : "undefined");
if(uuid_str && uuid_parse(uuid_str, checkid) == 0) {
noit_check_t *check;
check = noit_poller_lookup(checkid);
if(check) {
busted = 0;
nc_printf(ncct, "%s`%s`%s", check->target, check->module, check->name);
}
}
if(uuid_str) free(uuid_str);
if(busted) nc_printf(ncct, "[check not in running system]");
nc_write(ncct, "\n", 1);
}
}
xmlXPathFreeObject(pobj);
return 0;
bad:
if(pobj) xmlXPathFreeObject(pobj);
return -1;
}
static char *
conf_t_check_prompt(EditLine *el) {
noit_console_closure_t ncct;
noit_conf_t_userdata_t *info;
noit_check_t *check;
static char *tl = "noit(conf)# ";
static char *pfmt = "noit(conf:%s%s%s)# ";
el_get(el, EL_USERDATA, (void *)&ncct);
if(!ncct) return tl;
info = noit_console_userdata_get(ncct, NOIT_CONF_T_USERDATA);
if(!info) return tl;
check = noit_poller_lookup(info->current_check);
if(check &&
check->target && check->target[0] &&
check->name && check->name[0])
snprintf(info->prompt, sizeof(info->prompt),
pfmt, check->target, "`", check->name);
else {
char uuid_str[37];
uuid_unparse_lower(info->current_check, uuid_str);
snprintf(info->prompt, sizeof(info->prompt), pfmt, "[", uuid_str, "]");
}
return info->prompt;
}
static int
noit_conf_checks_reload(noit_console_closure_t ncct,
int argc, char **argv,
noit_console_state_t *state, void *closure) {
if(noit_conf_reload(ncct, argc, argv, state, closure)) return -1;
noit_poller_reload(NULL);
return 0;
}
static int
validate_attr_set_scope(noit_conf_t_userdata_t *info,
struct _valid_attr_t *attrinfo) {
int len;
len = strlen(attrinfo->scope);
if(strncmp(info->path, attrinfo->scope, len) ||
(info->path[len] != '\0' && info->path[len] != '/')) {
return -1;
}
return 0;
}
static int
replace_config(noit_console_closure_t ncct,
noit_conf_t_userdata_t *info, const char *name,
const char *value) {
int i, cnt, rv = -1, active = 0;
xmlXPathObjectPtr pobj = NULL;
xmlXPathContextPtr xpath_ctxt = NULL;
xmlNodePtr node, confignode;
char xpath[1024], *path;
path = info->path;
if(!strcmp(path, "/")) path = "";
noit_conf_xml_xpath(NULL, &xpath_ctxt);
/* Only if checks will fixate this attribute shall we check for
* child <check> nodes.
* NOTE: this return nothing and "seems" okay if we are _in_
* a <check> node. That case is handled below.
*/
snprintf(xpath, sizeof(xpath), "/noit/%s//check[@uuid]", path);
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET) goto out;
cnt = xmlXPathNodeSetGetLength(pobj->nodesetval);
for(i=0; i<cnt; i++) {
uuid_t checkid;
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, i);
if(noit_conf_get_uuid(node, "@uuid", checkid)) {
noit_check_t *check;
check = noit_poller_lookup(checkid);
if(check && NOIT_CHECK_LIVE(check)) active++;
}
}
if(pobj) xmlXPathFreeObject(pobj);
#ifdef UNSAFE_RECONFIG
snprintf(xpath, sizeof(xpath), "/noit/%s", path);
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET) goto out;
cnt = xmlXPathNodeSetGetLength(pobj->nodesetval);
if(cnt != 1) {
nc_printf(ncct, "Internal error: context node disappeared\n");
goto out;
}
node = (noit_conf_section_t)xmlXPathNodeSetItem(pobj->nodesetval, 0);
if(strcmp((const char *)node->name, "check")) {
uuid_t checkid;
/* Detect if we are actually a <check> node and attempting to
* change something we shouldn't.
* This is the counterpart noted above.
*/
if(noit_conf_get_uuid(node, "@uuid", checkid)) {
noit_check_t *check;
check = noit_poller_lookup(checkid);
if(NOIT_CHECK_LIVE(check)) active++;
}
}
if(active) {
nc_printf(ncct, "Cannot set '%s', it would effect %d live check(s)\n",
name, active);
goto out;
}
if(pobj) xmlXPathFreeObject(pobj);
#endif
/* Here we want to remove /noit/path/config/name */
snprintf(xpath, sizeof(xpath), "/noit/%s/config/%s", path, name);
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET) goto out;
if(xmlXPathNodeSetGetLength(pobj->nodesetval) > 0) {
xmlNodePtr toremove;
toremove = xmlXPathNodeSetItem(pobj->nodesetval, 0);
CONF_REMOVE(toremove);
xmlUnlinkNode(toremove);
}
/* TODO: if there are no more children of config, remove config? */
if(value) {
if(pobj) xmlXPathFreeObject(pobj);
/* He we create config if needed and place a child node under it */
snprintf(xpath, sizeof(xpath), "/noit/%s/config", path);
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET) goto out;
if(xmlXPathNodeSetGetLength(pobj->nodesetval) == 0) {
if(pobj) xmlXPathFreeObject(pobj);
snprintf(xpath, sizeof(xpath), "/noit/%s", path);
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);
if(!pobj || pobj->type != XPATH_NODESET) goto out;
if(xmlXPathNodeSetGetLength(pobj->nodesetval) != 1) {
nc_printf(ncct, "Node disappeared from under you!\n");
goto out;
}
confignode = xmlNewChild(xmlXPathNodeSetItem(pobj->nodesetval, 0),
NULL, (xmlChar *)"config", NULL);
if(confignode == NULL) {
nc_printf(ncct, "Error creating config child node.\n");
goto out;
}
}
else confignode = xmlXPathNodeSetItem(pobj->nodesetval, 0);
assert(confignode);
/* Now we create a child */
xmlNewChild(confignode, NULL, (xmlChar *)name, (xmlChar *)value);
CONF_DIRTY(confignode);
}
noit_conf_mark_changed();
rv = 0;
out:
if(pobj) xmlXPathFreeObject(pobj);
return rv;
}
static int
replace_attr(noit_console_closure_t ncct,
noit_conf_t_userdata_t *info, struct _valid_attr_t *attrinfo,
const char *value) {
int i, cnt, rv = -1, active = 0;
xmlXPathObjectPtr pobj = NULL;
xmlXPathContextPtr xpath_ctxt = NULL;
xmlNodePtr node;
char xpath[1024], *path;
path = info->path;
if(!strcmp(path, "/")) path = "";
noit_conf_xml_xpath(NULL, &xpath_ctxt);
if(attrinfo->checks_fixate) {
/* Only if checks will fixate this attribute shall we check for
* child <check> nodes.
* NOTE: this return nothing and "seems" okay if we are _in_
* a <check> node. That case is handled below.
*/
snprintf(xpath, sizeof(xpath), "/noit/%s//check[@uuid]", path);
pobj = xmlXPathEval((xmlChar *)xpath, xpath_ctxt);