Simple term storage for SystemRegistry
The package can be installed by adding system_registry_term_storage
to your list of dependencies in mix.exs
:
def deps do
[{:system_registry_term_storage, "~> 0.1"}]
end
Config values can be persisted using the term storage module. Persistence is enabled
for individual leaf nodes. The value for the leaf node is written to a file at the
scope specified. For example, lets say we want to persist the value for the leaf node
[:config, :a]
. In the application that wants to persist this value, we would call:
SystemRegistry.TermStorage.persist([:config, :a])
. This cal would typically be made
in the dependencies application start. Once persistence is enabled, term storage will
make its own entry into the config with the value from disk using the priority
:persistence
. Using this technique, old values will remain saved on the file system
but they will not be made available unless they are told to be persisted. Scopes to be
persisted and the path to write persisted terms to can be set in the application config
config :system_registry, SystemRegistry.TermStorage,
scopes: [
[:config, :network_interface, "wlan0", :ssid],
[:config, :network_interface, "wlan0", :psk],
],
path: "/tmp/system_registry"
The default path for term storage is at /tmp/system_registry
Documentation can be generated with ExDoc and published on HexDocs. Once published, the docs can be found at https://hexdocs.pm/system_registry_term_storage.