Elektra  0.8.23
Plugin: blockresolver

The blockresolver can be used to only resolve a tagged block inside a configuration file.

Implementation details

blockresolver extracts the requested block from the configurations file and writes it into a temporary file. Afterwards Elektra will only work on the temporary file until kdbSet is called. On kdbSet the contents of the temporary file will be merged with parts outside of the requested block from the original file.

Usage

`kdb mount -R blockresolver /path/to/my/file /mountpoint -c identifier="identifier-tag"`

where identifier specifies the tag blockresolver will search for in the configuration file.

A block consists of 2 parts:

Limitations

Currently the identifier must be unique.

Example

```

Backup-and-Restore:system/examples/blockresolver

create testfile

kdb set system/test/blockfile echo 'text' > $(kdb get system/test/blockfile) echo 'more text' >> $(kdb get system/test/blockfile) echo 'some more text' >> $(kdb get system/test/blockfile) echo '>>> block config start' >> $(kdb get system/test/blockfile) echo '[section1]' >> $(kdb get system/test/blockfile) echo 'key1 = val1' >> $(kdb get system/test/blockfile) echo '[section2]' >> $(kdb get system/test/blockfile) echo 'key2 = val2' >> $(kdb get system/test/blockfile) echo '>>> block config stop' >> $(kdb get system/test/blockfile) echo 'text again' >> $(kdb get system/test/blockfile) echo 'and more text' >> $(kdb get system/test/blockfile) echo 'text' >> $(kdb get system/test/blockfile)

sudo kdb mount -R blockresolver $(kdb get system/test/blockfile) system/examples/blockresolver -c identifier=">>> block config" ini

check testfile

cat $(kdb get system/test/blockfile) #> text #> more text #> some more text #> >>> block config start #> [section1] #> key1 = val1 #> [section2] #> key2 = val2 #> >>> block config stop #> text again #> and more text #> text

only the block between the tags is read!

kdb export system/examples/blockresolver ini #> [section1] #> key1 = val1 #> [section2] #> key2 = val2

add a new key to the resolved block

kdb set system/examples/blockresolver/section1/key12 val12

cat $(kdb get system/test/blockfile) #> text #> more text #> some more text #> >>> block config start #> [section1] #> key1 = val1 #> key12 = val12 #> [section2] #> key2 = val2 #> >>> block config stop #> text again #> and more text #> text

cleanup

kdb rm -r system/examples/blockresolver rm $(kdb get system/test/blockfile) kdb rm system/test/blockfile sudo kdb umount system/examples/blockresolver ```