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* New "general-purpose" datastore upgrade callback added which i called once on startup, intended for lo

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w-level general upgrades and as a complement to module-specific upgrade.
  * Called on startup after initial XML parsing, but before module-specific upgrades
  * Enabled by definign the `.ca_datastore_upgrade`
  * [General-purpose upgrade documentation](https://clixon-docs.readthedocs.io/en/latest/backend.html#ge
neral-purpose)
* JSON parse error messages change from ` on line x: syntax error,..` to `json_parse: line x: syntax err
or`
* Unknown-element error message is more descriptive, eg from `namespace is: urn:example:clixon` to: `Fai
led to find YANG spec of XML node: x with parent: xp in namespace urn:example:clixon`.
* C-API parse and validation API more capable
  * `xml_spec_populate` family of functions extended with three-value return values
    * -1: error, 0: parse OK, 1: parse and YANG binding OK.
  * `xml_parse` and `json_parse` API changes
    * Three value returns: -1: error, 0: parse OK, 1: parse and YANG binding OK.
    * Extended `xml_parse_file2` and `xml_parse_string2` extended API functions with all options available.
      * New concept called `yang_bind` that defines how XML symbols are bound to YANG after parsing
    * Existing API same except `xml_parse_file` `endtag` argument moved to `xml_parse_file2`
* C-API: Added instrumentation: `xml_size` and `xml_stats_get`.
* Fixed: Enabling modstate (CLICON_XMLDB_MODSTATE), changing a revision on a yang, and restarting made the backend daemon exit at start (thanks Matt)
  * Also: ensure to load `ietf-yang-library.yang ` if CLICON_XMLDB_MODSTATE is set
This commit is contained in:
Olof hagsand 2020-02-20 14:00:01 +01:00
parent d665992f7c
commit 9fa5e216c4
80 changed files with 2204 additions and 755 deletions
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24
apps/backend/backend_commit.c
View file

@ -2,7 +2,9 @@
*
***** BEGIN LICENSE BLOCK *****
Copyright (C) 2009-2019 Olof Hagsand and Benny Holmgren
Copyright (C) 2009-2016 Olof Hagsand and Benny Holmgren
Copyright (C) 2017-2019 Olof Hagsand
Copyright (C) 2020 Olof Hagsand and Rubicon Communications, LLC
This file is part of CLIXON.
@ -189,6 +191,7 @@ startup_common(clicon_handle h,
clicon_debug(1, "Reading startup config from %s", db);
if (xmldb_get0(h, db, NULL, "/", 0, &xt, msd) < 0)
goto done;
clicon_debug(1, "Reading startup config done");
/* Clear flags xpath for get */
xml_apply0(xt, CX_ELMNT, (xml_applyfn_t*)xml_flag_reset,
(void*)(XML_FLAG_MARK|XML_FLAG_CHANGE));
@ -197,20 +200,21 @@ startup_common(clicon_handle h,
xt = NULL;
goto ok;
}
if (msd){
/* Here xt is old syntax */
if ((ret = clixon_module_upgrade(h, xt, msd, cbret)) < 0)
goto done;
if (ret == 0)
goto fail;
/* Here xt is new syntax */
}
/* Here xt is old syntax */
/* General purpose datastore upgrade */
if (clixon_plugin_datastore_upgrade(h, db, xt, msd) < 0)
goto done;
/* Module-specific upgrade callbacks */
if ((ret = clixon_module_upgrade(h, xt, msd, cbret)) < 0)
goto done;
if (ret == 0)
goto fail;
if ((yspec = clicon_dbspec_yang(h)) == NULL){
clicon_err(OE_YANG, 0, "Yang spec not set");
goto done;
}
/* After upgrading, XML tree needs to be sorted and yang spec populated */
if (xml_apply0(xt, CX_ELMNT, xml_spec_populate, yspec) < 0)
if (xml_spec_populate(xt, yspec, NULL) < 0)
goto done;
if (xml_apply0(xt, CX_ELMNT, xml_sort, h) < 0)
goto done;