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Feature Request: Support RFC 6022 (NETCONF Monitoring)

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* Added capabilities and schema state, and get-schema rpc
* New `clixon-config@2022-11-01.yang` revision
  * Added option:
    * `CLICON_NETCONF_MONITORING`
    * `CLICON_NETCONF_MONITORING_LOCATION`
This commit is contained in:
Olof hagsand 2022-11-22 13:56:20 +01:00
parent 8ebab16c4c
commit c94e9dad67
20 changed files with 1988 additions and 64 deletions
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179
lib/src/clixon_netconf_monitoring.c Normal file
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/*
*
***** BEGIN LICENSE BLOCK *****
Copyright (C) 2009-2019 Olof Hagsand
Copyright (C) 2020-2022 Olof Hagsand and Rubicon Communications, LLC(Netgate)
This file is part of CLIXON.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 3 or later (the "GPL"),
in which case the provisions of the GPL are applicable instead
of those above. If you wish to allow use of your version of this file only
under the terms of the GPL, and not to allow others to
use your version of this file under the terms of Apache License version 2,
indicate your decision by deleting the provisions above and replace them with
the notice and other provisions required by the GPL. If you do not delete
the provisions above, a recipient may use your version of this file under
the terms of any one of the Apache License version 2 or the GPL.
***** END LICENSE BLOCK *****
* RFC 6022 YANG Module for NETCONF Monitoring
*/
#ifdef HAVE_CONFIG_H
#include "clixon_config.h" /* generated by config & autoconf */
#endif
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
#include <ctype.h>
#include <unistd.h>
/* cligen */
#include <cligen/cligen.h>
/* clicon */
#include "clixon_log.h"
#include "clixon_queue.h"
#include "clixon_hash.h"
#include "clixon_handle.h"
#include "clixon_yang.h"
#include "clixon_xml.h"
#include "clixon_xml_io.h"
#include "clixon_netconf_lib.h"
#include "clixon_options.h"
#include "clixon_err.h"
#include "clixon_netconf_monitoring.h"
/*!
* @param[in] h Clicon handle
* @param[in] yspec Yang spec
* @param[in,out] cb CLIgen buffer
* @retval -1 Error (fatal)
* @retval 0 OK
*/
static int
yang_modules(clicon_handle h,
yang_stmt *yspec,
cbuf *cb)
{
int retval = -1;
yang_stmt *ym = NULL;
yang_stmt *y1;
char *identifier;
char *revision;
char *dir;
cprintf(cb, "<schemas>");
while ((ym = yn_each(yspec, ym)) != NULL) {
cprintf(cb, "<schema>");
identifier = yang_argument_get(ym);
cprintf(cb, "<identifier>%s</identifier>", identifier);
cprintf(cb, "<version>");
revision = NULL;
if ((y1 = yang_find(ym, Y_REVISION, NULL)) != NULL){
revision = yang_argument_get(y1);
cprintf(cb, "%s", revision);
}
cprintf(cb, "</version>");
cprintf(cb, "<format>yang</format>");
if ((y1 = yang_find(ym, Y_NAMESPACE, NULL)) != NULL){
cprintf(cb, "<namespace>%s</namespace>", yang_argument_get(y1));
}
/* A local implementation may have other locations, how to configure? */
cprintf(cb, "<location>NETCONF</location>");
if ((dir = clicon_option_str(h,"CLICON_NETCONF_MONITORING_LOCATION")) != NULL){
if (revision)
cprintf(cb, "<location>%s/%s@%s.yang</location>", dir, identifier, revision);
else
cprintf(cb, "<location>%s/%s.yang</location>", dir, identifier);
}
cprintf(cb, "</schema>");
}
cprintf(cb, "</schemas>");
retval = 0;
//done:
return retval;
}
/*! Get modules state according to RFC 7895
* @param[in] h Clicon handle
* @param[in] yspec Yang spec
* @param[in] xpath XML Xpath
* @param[in] nsc XML Namespace context for xpath
* @param[in] brief Just name, revision and uri (no cache)
* @param[in,out] xret Existing XML tree, merge x into this
* @retval -1 Error (fatal)
* @retval 0 Statedata callback failed
* @retval 1 OK
* 2.1
* netconf-state
* /capabilities
* /datastores
* /schemas
* /sessions
* /statistics
*/
int
netconf_monitoring_state_get(clicon_handle h,
yang_stmt *yspec,
char *xpath,
cvec *nsc,
int brief,
cxobj **xret)
{
int retval = -1;
cbuf *cb = NULL;
if ((cb = cbuf_new()) ==NULL){
clicon_err(OE_XML, errno, "cbuf_new");
goto done;
}
/* capabilities 2.1.1 */
cprintf(cb, "<netconf-state xmlns=\"%s\">", NETCONF_MONITORING_NAMESPACE);
if (netconf_capabilites(h, cb) < 0)
goto done;
/* datastores 2.1.2 */
// XXX
/* schemas 2.1.3 */
if (yang_modules(h, yspec, cb) < 0)
goto done;
/* sessions 2.1.4 */
// XXX
/* statistics 2.1.5 */
// XXX
cprintf(cb, "</netconf-state>");
if (clixon_xml_parse_string(cbuf_get(cb), YB_MODULE, yspec, xret, NULL) < 0)
goto done;
retval = 1;
done:
clicon_debug(1, "%s %d", __FUNCTION__, retval);
if (cb)
cbuf_free(cb);
return retval;
// fail:
// retval = 0;
// goto done;
}