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

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

Connect to the unit's database

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

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.

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

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

Remove a key from the database entirely.

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

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

Set a value in the database.

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

Trait Implementations

impl Debug for Storage

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.