clixon/doc/DEVELOP.md
2019-08-06 15:47:46 +02:00

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# README for Clixon developers
* [Code documentation](#documentation)
* [How to work in git (how-to-work-in-git)](#how-to-work-in-git)
* [How the meta-configure stuff works](#meta-configure)
* [How to debug](#debug)
* [New release](#new-release)
## Documentation
How to document the code
```
/*! This is a small comment on one line
*
* This is a detailed description
* spanning several lines.
*
* Example usage:
* @code
* fn(a, &b);
* @endcode
*
* @param[in] src This is a description of the first parameter
* @param[in,out] dest This is a description of the second parameter
* @retval TRUE This is a description of the return value
* @retval FALSE This is a description of another return value
* @see See also this function
*/
```
## How to work in git
Clixon uses semantic versioning (https://semver.org).
Try to keep a single master branch always working. Currently testing is made using [Travis CI](https://travis-ci.org/clicon/clixon).
However, releases are made periodically (ca every 1 month) which is more tested.
A release branch can be made, eg release-4.0 where 4.0.0, 4.0.1 are tagged
## How the meta-configure stuff works
```
configure.ac --.
| .------> autoconf* -----> configure
[aclocal.m4] --+---+
| `-----> [autoheader*] --> [config.h.in]
[acsite.m4] ---'
.-------------> [config.cache]
configure* ------------+-------------> config.log
|
[config.h.in] -. v .-> [config.h] -.
+--> config.status* -+ +--> make*
Makefile.in ---' `-> Makefile ---'
```
Note: remember to run autoheader sometimes (when?)
And when you do note (https://github.com/olofhagsand/cligen/issues/17) which states that cligen_custom.h should be in quote.
## Debug
How to debug
### Configure in debug mode
```
CFLAGS="-g -Wall" INSTALLFLAGS="" ./configure
```
### Make your own simplified yang and configuration file.
```
cat <<EOF > /tmp/my.yang
module mymodule{
container x {
list y {
key "a";
leaf a {
type string;
}
}
}
}
EOF
cat <<EOF > /tmp/myconf.xml
<config>
<CLICON_CONFIGFILE>/tmp/myconf.xml</CLICON_CONFIGFILE>
<CLICON_YANG_DIR>/usr/local/share/example/yang</CLICON_YANG_DIR>
<CLICON_YANG_MODULE_MAIN>example</CLICON_YANG_MODULE_MAIN>
<CLICON_SOCK>/usr/local/var/example/example.sock</CLICON_SOCK>
<CLICON_BACKEND_PIDFILE>/usr/local/var/example/example.pidfile</CLICON_BACKEND_PIDFILE>
<CLICON_XMLDB_DIR>/usr/local/var/example</CLICON_XMLDB_DIR>
</config>
EOF
sudo clixon_backend -F -s init -f /tmp/myconf.xml -y /tmp/my.yang
```
### Run valgrind and callgrind
```
valgrind --leak-check=full --show-leak-kinds=all clixon_netconf -qf /tmp/myconf.xml -y /tmp/my.yang
valgrind --tool=callgrind clixon_netconf -qf /tmp/myconf.xml -y /tmp/my.yang
sudo kcachegrind
```
## New release
What to think about when doing a new release.
* Ensure all tests run OK
* New yang/clicon/clixon-config@XXX.yang revision?
* In configure.ac, for minor releases change CLIXON_VERSION in configure.ac to eg: (minor should have been bumped):
```
CLIXON_VERSION="\"${CLIXON_VERSION_MAJOR}.${CLIXON_VERSION_MINOR}.${CLIXON_VERSION_PATCH}\""
```
* For patch releases change CLIXON_VERSION_PATCH
* Run autoconf
* Git stuff:
```
git tag -a <version"
git push origin <version>
```
After release:
* Bump minor version and add a "PRE":
```
CLIXON_VERSION_MINOR="10" ++
CLIXON_VERSION="\"${CLIXON_VERSION_MAJOR}.${CLIXON_VERSION_MINOR}.${CLIXON_VERSION_PATCH}.PRE\""
```
* Run autoconf