Plugin: process

• infos = Information about the process plugin is in keys below
• infos/author = Armin Wurzinger e1528.nosp@m.532@.nosp@m.libel.nosp@m.ektr.nosp@m.a.org
• infos/licence = BSD
• infos/needs =
• infos/provides =
• infos/recommends =
• infos/placements = pregetstorage getstorage postgetstorage presetstorage setstorage
• infos/status = maintained unittest shelltest configurable experimental unfinished
• infos/metadata =
• infos/description = executes other plugins inside an own process

Introduction

The process plugin uses the pluginprocess library in order to execute other plugins inside an own process. This is useful for runtimes or libraries that cannot be reinitialized in the same process after they have been used. It is also useful for plugins which cause memory leaks to be isolated in an own process.

Installation

See installation. The package is called libelektra5-experimental.

Usage

Mount this plugin and specify the plugin configuration parameter plugin to a plugin that exists on the system. The proxied plugin will then be executed in a separate process and this plugin handles the communication between the processes.

Dependencies

The pluginprocess library, which is only available on POSIX environments currently.

Examples

# Mount the dump plugin a separate process via the process plugin to `user:/examples/process`
sudo kdb mount config.file user:/tests/process process plugin=dump
 
kdb set user:/tests/process/key value
#> Create a new key user:/tests/process/key with string "value"
 
kdb get user:/tests/process/key
#> value
 
# Undo modifications
kdb rm -r user:/tests/process
sudo kdb umount user:/tests/process

Limitations

• Currently only plugins that act on one of the above-mentioned placements can be proxied successfully. Other metainformation like needs or provides or recommends will not be available when proxying using this plugin.
• This plugin cannot act as a proxy for itself to prevent loops.