forked from ungleich-public/cdist
Merge pull request #31 from asteven/issue-28
Robuster implementation of __key_value
This commit is contained in:
telmich
commit
1025ed5897
7 changed files with 102 additions and 71 deletions
53
conf/type/__key_value/explorer/state
Executable file
53
conf/type/__key_value/explorer/state
Executable file
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@ -0,0 +1,53 @@
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#!/bin/sh
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#
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# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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key="$(cat "$__object/parameter/key" 2>/dev/null \
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|| echo "$__object_id")"
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state="$(cat "$__object/parameter/state" 2>/dev/null \
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|| echo "present")"
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file="$(cat "$__object/parameter/file")"
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delimiter="$(cat "$__object/parameter/delimiter")"
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value="$(cat "$__object/parameter/value" 2>/dev/null \
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|| echo "__CDIST_NOTSET__")"
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case "$state" in
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absent)
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if grep -q -E "^$key$delimiter+" "$file"; then
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# if the key exists, with whatever value, we will have to remove it
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# so report it as present
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echo present
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else
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# key does not exist
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echo absent
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fi
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;;
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present)
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if grep -q -E "^$key$delimiter+$value$" "$file"; then
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# key exists and value is same
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echo present
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elif grep -q -E "^$key$delimiter+" "$file"; then
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# key exists, but value is empty or different
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echo wrongvalue
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else
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# key does not exist
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echo absent
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fi
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;;
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esac
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@ -1,37 +0,0 @@
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#!/bin/sh
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#
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# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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# Get the current value of key or __NOTSET__ if the key doesn't exist.
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#
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if [ -f "$__object/parameter/key" ]; then
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key="$(cat "$__object/parameter/key")"
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else
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key="$__object_id"
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fi
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file="$(cat "$__object/parameter/file")"
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delimiter="$(cat "$__object/parameter/delimiter")"
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awk -F "$delimiter" '
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BEGIN { found=0 }
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/^'$key'/ { print $2; found=1 }
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END { if (found) exit 0; else exit 1 }' "$file" \
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|| echo "__NOTSET__"
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@ -18,35 +18,40 @@
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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value_is="$(cat "$__object/explorer/value")"
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value_should="$(cat "$__object/parameter/value")"
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key="$(cat "$__object/parameter/key")"
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file="$(cat "$__object/parameter/file")"
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delimiter="$(cat "$__object/parameter/delimiter")"
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value="$(cat "$__object/parameter/value")"
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if [ "$value_is" != "$value_should" ]; then
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case "$value_is" in
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__NOTSET__)
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# add key and value
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echo "echo \"${key}${delimiter}${value_should}\" >> \"$file\""
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state_is="$(cat "$__object/explorer/state")"
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state_should="$(cat "$__object/parameter/state")"
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if [ "$state_is" = "$state_should" ]; then
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# nothing to do
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exit 0
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fi
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case "$state_should" in
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absent)
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# remove lines starting with key
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echo "sed -i '/^$key\($delimiter\+\)/d' \"$file\""
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;;
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present)
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case "$state_is" in
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absent)
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# add new key and value
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echo "echo \"${key}${delimiter}${value}\" >> \"$file\""
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;;
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wrongvalue)
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# change exisiting value
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echo "sed -i \"s|^$key\($delimiter\+\).*|$key\1$value|\" \"$file\""
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;;
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*)
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if [ "$value_should" = '__NOTSET__' ]; then
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# remove key and value
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cat << DONE
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sed -i '/^${key}/d' "$file"
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DONE
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else
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# change value
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cat << DONE
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awk -F "$delimiter" '
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/${key}${delimiter}*/{gsub("$value_is", "$value_should")};{print}' "$file" > "${file}+" \
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&& mv "${file}+" "$file"
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DONE
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fi
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;;
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echo "Unknown explorer state: $state_is" >&2
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exit 1
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esac
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;;
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*)
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echo "Unknown state: $state_should" >&2
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exit 1
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esac
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fi
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@ -16,9 +16,6 @@ file.
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REQUIRED PARAMETERS
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-------------------
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value::
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The value for the key. Setting the value to `__NOTSET__` will remove the key
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from the file.
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file::
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The file to operate on.
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delimiter::
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@ -27,8 +24,13 @@ delimiter::
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OPTIONAL PARAMETERS
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-------------------
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state::
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present or absent, defaults to present. If present, sets the key to value,
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if absent, removes the key from the file.
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key::
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The key to change. Defaults to object_id.
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value::
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The value for the key. Optional if state=absent, required otherwise.
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EXAMPLES
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@ -45,6 +47,9 @@ __key_value my-fancy-id --file /etc/login.defs --key SYS_UID_MAX --value 666 \
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# Enable packet forwarding
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__key_value net.ipv4.ip_forward --file /etc/sysctl.conf --value 1 \
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--delimiter '='
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# Remove existing key/value
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__key_value LEGACY_KEY --file /etc/somefile --state absent --delimiter '='
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--------------------------------------------------------------------------------
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@ -18,9 +18,13 @@
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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if [ -f "$__object/parameter/key" ]; then
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key="$(cat "$__object/parameter/key")"
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else
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echo "$__object_id" > "$__object/parameter/key"
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fi
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# set defaults
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key="$(cat "$__object/parameter/key" 2>/dev/null \
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|| echo "$__object_id" | tee "$__object/parameter/key")"
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state="$(cat "$__object/parameter/state" 2>/dev/null \
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|| echo "present" | tee "$__object/parameter/state")"
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if [ "$state" = "present" -a ! -f "$__object/parameter/value" ]; then
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echo "Missing required parameter 'value'" >&2
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exit 1
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fi
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@ -1 +1,3 @@
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key
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value
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state
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@ -1,3 +1,2 @@
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value
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file
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delimiter
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