Initial implementation of NETCONF confirmed-commit

2022-09-30 19:17:13 -06:00 · 2022-09-30 19:17:13 -06:00 · 284316b646
commit 284316b646
parent 954e5d56fd
16 changed files with 1375 additions and 26 deletions
--- a/apps/backend/backend_failsafe.c
+++ b/apps/backend/backend_failsafe.c
@ -0,0 +1,105 @@
+/*
+ *
+  ***** BEGIN LICENSE BLOCK *****
+
+  Copyright (C) 2009-2016 Olof Hagsand and Benny Holmgren
+  Copyright (C) 2017-2019 Olof Hagsand
+  Copyright (C) 2020-2021 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 *****
+
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "clixon_config.h" /* generated by config & autoconf */
+#endif
+
+#include <stdlib.h>
+#include <errno.h>
+#include <syslog.h>
+
+/* cligen */
+#include <cligen/cligen.h>
+
+/* clixon */
+#include <clixon/clixon.h>
+
+#include "clixon_backend_commit.h"
+#include "backend_failsafe.h"
+
+/*! Reset running and start in failsafe mode. If no failsafe then quit.
+  Typically done when startup status is not OK so
+
+failsafe      ----------------------+
+                            reset    \ commit
+running                   ----|-------+---------------> RUNNING FAILSAFE
+                           \
+tmp                         |---------------------->
+ */
+int
+load_failsafe(clicon_handle h, char *phase)
+{
+    int   retval = -1;
+    int   ret;
+    char *db = "failsafe";
+    cbuf *cbret = NULL;
+
+    phase = phase == NULL ? "(unknown)" : phase;
+
+    if ((cbret = cbuf_new()) == NULL){
+        clicon_err(OE_XML, errno, "cbuf_new");
+        goto done;
+    }
+    if ((ret = xmldb_exists(h, db)) < 0)
+        goto done;
+    if (ret == 0){ /* No it does not exist, fail */
+        clicon_err(OE_DB, 0, "%s failed and no Failsafe database found, exiting", phase);
+        goto done;
+    }
+    /* Copy original running to tmp as backup (restore if error) */
+    if (xmldb_copy(h, "running", "tmp") < 0)
+        goto done;
+    if (xmldb_db_reset(h, "running") < 0)
+        goto done;
+    ret = candidate_commit(h, db, cbret);
+    if (ret != 1)
+        if (xmldb_copy(h, "tmp", "running") < 0)
+            goto done;
+    if (ret < 0)
+        goto done;
+    if (ret == 0){
+        clicon_err(OE_DB, 0, "%s failed, Failsafe database validation failed %s", phase, cbuf_get(cbret));
+        goto done;
+    }
+    clicon_log(LOG_NOTICE, "%s failed, Failsafe database loaded ", phase);
+    retval = 0;
+    done:
+    if (cbret)
+        cbuf_free(cbret);
+    return retval;
+}