devstack/lib/config
Ryota MIBU 410f5c0016 Fix unsubstituted filename creation
Since merge_config_file() tries to create an unsubstituted config file,
stack.sh fails due to permission denied in the file creation when you
use '[[post-config|/$Q_PLUGIN_CONF_FILE]]' and the file does not exist.

This patch deletes unnecessary 'touch' command, because the file will
be made by 'iniset' function in the next command line with evaled
string from 'configfile'.

This patch also fixes merge_config_group() to use evaled 'configfile'
when it checks the directory of the config file exists.

Change-Id: I608847a34143b5c6a1708c180186dd88a32dd44b
Closes-bug: #1294213
2014-06-17 15:43:07 +09:00

129 lines
3.2 KiB
Plaintext

# lib/config - Configuration file manipulation functions
# These functions have no external dependencies and the following side-effects:
#
# CONFIG_AWK_CMD is defined, default is ``awk``
# Meta-config files contain multiple INI-style configuration files
# using a specific new section header to delimit them:
#
# [[group-name|file-name]]
#
# group-name refers to the group of configuration file changes to be processed
# at a particular time. These are called phases in ``stack.sh`` but
# group here as these functions are not DevStack-specific.
#
# file-name is the destination of the config file
# Save trace setting
C_XTRACE=$(set +o | grep xtrace)
set +o xtrace
# Allow the awk command to be overridden on legacy platforms
CONFIG_AWK_CMD=${CONFIG_AWK_CMD:-awk}
# Get the section for the specific group and config file
# get_meta_section infile group configfile
function get_meta_section {
local file=$1
local matchgroup=$2
local configfile=$3
[[ -r $file ]] || return 0
[[ -z $configfile ]] && return 0
$CONFIG_AWK_CMD -v matchgroup=$matchgroup -v configfile=$configfile '
BEGIN { group = "" }
/^\[\[.+\|.*\]\]/ {
if (group == "") {
gsub("[][]", "", $1);
split($1, a, "|");
if (a[1] == matchgroup && a[2] == configfile) {
group=a[1]
}
} else {
group=""
}
next
}
{
if (group != "")
print $0
}
' $file
}
# Get a list of config files for a specific group
# get_meta_section_files infile group
function get_meta_section_files {
local file=$1
local matchgroup=$2
[[ -r $file ]] || return 0
$CONFIG_AWK_CMD -v matchgroup=$matchgroup '
/^\[\[.+\|.*\]\]/ {
gsub("[][]", "", $1);
split($1, a, "|");
if (a[1] == matchgroup)
print a[2]
}
' $file
}
# Merge the contents of a meta-config file into its destination config file
# If configfile does not exist it will be created.
# merge_config_file infile group configfile
function merge_config_file {
local file=$1
local matchgroup=$2
local configfile=$3
get_meta_section $file $matchgroup $configfile | \
$CONFIG_AWK_CMD -v configfile=$configfile '
BEGIN { section = "" }
/^\[.+\]/ {
gsub("[][]", "", $1);
section=$1
next
}
/^ *\#/ {
next
}
/^[^ \t]+/ {
split($0, d, " *= *")
print "iniset " configfile " " section " " d[1] " \"" d[2] "\""
}
' | while read a; do eval "$a"; done
}
# Merge all of the files specified by group
# merge_config_group infile group [group ...]
function merge_config_group {
local localfile=$1; shift
local matchgroups=$@
[[ -r $localfile ]] || return 0
for group in $matchgroups; do
for configfile in $(get_meta_section_files $localfile $group); do
if [[ -d $(dirname $(eval "echo $configfile")) ]]; then
merge_config_file $localfile $group $configfile
fi
done
done
}
# Restore xtrace
$C_XTRACE
# Local variables:
# mode: shell-script
# End: