Struct btm::BtmCfg

pub struct BtmCfg {
    pub enable: bool,
    pub itv: u64,
    pub cap: u64,
    pub mode: SnapMode,
    pub algo: SnapAlgo,
    pub target: String,
}

Config structure of snapshot

Fields

enable: bool

a global switch for enabling snapshot functions

itv: u64

interval between adjacent snapshots, default to 10 blocks

cap: u64

the maximum number of snapshots that will be stored, default to 100

mode: SnapMode

Zfs or Btrfs or External, will try a guess if missing

algo: SnapAlgo

Fair or Fade, default to ‘Fair’

target: String

a data volume containing both ledger data and tendermint data

Implementations

impl BtmCfg

pub fn new() -> Self

create a simple instance

pub fn new_client_hdr() -> Self

Used in client side

pub fn snapshot(&self, idx: u64) -> Result<()>

generate a snapshot for the latest state of blockchain

pub fn rollback(&self, idx: Option<u64>, strict: bool) -> Result<()>

rollback the state of blockchain to a specificed height

pub fn get_sorted_snapshots(&self) -> Result<Vec<u64>>

Get snapshot list in ‘DESC’ order.

pub fn guess_mode(&self) -> Result<SnapMode>

try to guess a correct mode NOTE: not suitable for External mode

Trait Implementations

impl Args for BtmCfg

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

Append to App so it can instantiate Self.

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

Append to App so it can update self.

impl Clone for BtmCfg

fn clone(&self) -> BtmCfg

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BtmCfg

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

Formats the value using the given formatter.

impl Default for BtmCfg

fn default() -> Self

Returns the “default value” for a type.

impl FromArgMatches for BtmCfg

fn from_arg_matches(__clap_arg_matches: &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.

impl IntoApp for BtmCfg

fn into_app<'b>() -> App<'b>

Build an App that can instantiate Self.

fn into_app_for_update<'b>() -> App<'b>

Build an App that can update self.

impl Parser for BtmCfg

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.

fn clap<'help>() -> App<'help>

👎 Deprecated since 3.0.0:

StructOpt::clap is replaced with IntoApp::into_app (derived as part of Parser)

Deprecated, StructOpt::clap replaced with IntoApp::into_app (derive as part of Parser)

fn from_clap(matches: &ArgMatches) -> Self

👎 Deprecated since 3.0.0:

StructOpt::from_clap is replaced with FromArgMatches::from_arg_matches (derived as part of Parser)

Deprecated, StructOpt::from_clap replaced with FromArgMatches::from_arg_matches (derive as part of Parser)

fn from_args() -> Self

👎 Deprecated since 3.0.0:

StructOpt::from_args is replaced with Parser::parse (note the change in derives)

Deprecated, StructOpt::from_args replaced with Parser::parse (note the change in derives)

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

👎 Deprecated since 3.0.0:

StructOpt::from_args_safe is replaced with Parser::try_parse (note the change in derives)

Deprecated, StructOpt::from_args_safe replaced with Parser::try_parse (note the change in derives)

fn from_iter<I, T>(itr: I) -> Self where
    I: IntoIterator<Item = T>,
    T: Into<OsString> + Clone, 

👎 Deprecated since 3.0.0:

StructOpt::from_iter is replaced with Parser::parse_from (note the change in derives)

Deprecated, StructOpt::from_iter replaced with Parser::parse_from (note the change in derives)

fn from_iter_safe<I, T>(itr: I) -> Result<Self, Error> where
    I: IntoIterator<Item = T>,
    T: Into<OsString> + Clone, 

👎 Deprecated since 3.0.0:

StructOpt::from_iter_safe is replaced with Parser::try_parse_from (note the change in derives)

Deprecated, StructOpt::from_iter_safe replaced with Parser::try_parse_from (note the change in derives)