Struct juju::unitdata::Storage

pub struct Storage { /* fields omitted */ }

A connection to the unit's Key/Value data Simple key value database for local unit state within charms. Values are automatically json encoded/decoded.

Methods

impl Storage

pub fn new(path: Option<PathBuf>) -> Result<Self, JujuError>

Connect to the unit's database

pub fn get<T>(&self, key: &str) -> Result<Option<T>, JujuError> where     T: Deserialize,

pub fn getrange(     &self,     key_prefix: &str,     strip: bool ) -> Result<HashMap<String, Value>, JujuError>

Get a range of keys starting with a common prefix as a mapping of keys to values.

pub fn update<T>(     &self,     mapping: HashMap<String, T>,     prefix: Option<String> ) -> Result<(), JujuError> where     T: Serialize,

Set the values of multiple keys at once. Accepts an optional prefix to apply to all keys before setting

pub fn unset(&self, key: &str) -> Result<(), JujuError>

Remove a key from the database entirely.

pub fn unsetrange(     &self,     keys: Option<Vec<String>>,     prefix: Option<String> ) -> Result<u32, JujuError>

Remove a range of keys starting with a common prefix, from the database entirely. If keys is set to None it will delete all keys Returns number of rows deleted

pub fn set<T>(&self, key: &str, value: T) -> Result<(), JujuError> where     T: Serialize,

Set a value in the database.

pub fn gethistory(&self, key: &str) -> Result<Vec<History>, JujuError>

Trait Implementations

impl Debug for Storage

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.