Struct CheckpointDb 

pub struct CheckpointDb { /* private fields */ }

Implementations

impl CheckpointDb

pub fn new<P: AsRef<Path>>(d: P) -> Self

Construct Checkpoint from path to a file.

pub fn slot(self, n: i32) -> Self

Construct with checkpoint slot n.

pub fn create(&self) -> Self

Create missing db_connection field if chk_file is not None. Mainly for cmdline uses.

impl CheckpointDb

pub fn restore<T: Checkpoint>(&self, data: &mut T) -> Result<bool>

Restore chain from checkpoint. Return true if restored successfuly, false otherwise.

pub fn restored<T: Checkpoint>(&self) -> Result<T>

👎Deprecated: Please use load_from_latest instead

Return checkpointed T

pub fn load_from_latest<T: Checkpoint>(&self) -> Result<T>

Load latest struct T from checkpoint

pub fn load_from_slot_n<T: Checkpoint>(&self, slot: i32) -> Result<T>

Load struct T from checkpoint in slot

pub fn commit<T: Checkpoint>(&self, data: &T) -> Result<bool>

Commit a checkpoint into database. Return true if committed, false otherwise.

pub fn get_number_of_checkpoints<T: Checkpoint>(&self) -> Result<u64>

Return the number of available checkpoints in database.

Trait Implementations

impl Args for CheckpointDb

fn group_id() -> Option<Id>

Report the ArgGroup::id for this set of arguments

fn augment_args<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate Self via FromArgMatches::from_arg_matches_mut

fn augment_args_for_update<'b>(__clap_app: Command) -> Command

Append to Command so it can instantiate self via FromArgMatches::update_from_arg_matches_mut

impl Clone for CheckpointDb

fn clone(&self) -> CheckpointDb

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl CommandFactory for CheckpointDb

fn command<'b>() -> Command

Build a Command that can instantiate Self.

fn command_for_update<'b>() -> Command

Build a Command that can update self.

impl Debug for CheckpointDb

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

Formats the value using the given formatter.

impl Default for CheckpointDb

fn default() -> CheckpointDb

Returns the “default value” for a type.

impl FromArgMatches for CheckpointDb

fn from_arg_matches(__clap_arg_matches: &ArgMatches) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn from_arg_matches_mut( __clap_arg_matches: &mut ArgMatches, ) -> Result<Self, Error>

Instantiate Self from ArgMatches, parsing the arguments as needed.

fn update_from_arg_matches( &mut self, __clap_arg_matches: &ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

fn update_from_arg_matches_mut( &mut self, __clap_arg_matches: &mut ArgMatches, ) -> Result<(), Error>

Assign values from ArgMatches to self.

impl Parser for CheckpointDb

fn parse() -> Self

Parse from std::env::args_os(), exit on error.

fn try_parse() -> Result<Self, Error>

Parse from std::env::args_os(), return Err on error.

fn parse_from<I, T>(itr: I) -> Self

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Parse from iterator, exit on error.

fn try_parse_from<I, T>(itr: I) -> Result<Self, Error>

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Parse from iterator, return Err on error.

fn update_from<I, T>(&mut self, itr: I)

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Update from iterator, exit on error.

fn try_update_from<I, T>(&mut self, itr: I) -> Result<(), Error>

where I: IntoIterator<Item = T>, T: Into<OsString> + Clone,

Update from iterator, return Err on error.