Struct ExportChainSpecCmd

pub struct ExportChainSpecCmd {
    pub chain: String,
    pub output: Option<PathBuf>,
    pub raw: bool,
}

Export a chain-spec to a JSON file in plain or in raw storage format.

Nodes that expose this command usually have embedded runtimes WASM blobs with genesis config presets which can be referenced via --chain <id> . The logic for loading the chain spec into memory based on an id is specific to each node and is a prerequisite to enable this command.

Same functionality can be achieved currently via crate::commands::build_spec_cmd::BuildSpecCmd but we recommend export-chain-spec in its stead. build-spec is known to be a legacy mix of exporting chain specs to JSON files or converting them to raw, which will be better represented under export-chain-spec.

Fields

chain: String

The chain spec identifier to export.

output: Option<PathBuf>

chain-spec JSON file path. If omitted, prints to stdout.

raw: bool

Export in raw genesis storage format.

Implementations

impl ExportChainSpecCmd

pub fn run(&self, spec: Box<dyn ChainSpec>) -> Result<()>

Run the export-chain-spec command

Trait Implementations

impl Args for ExportChainSpecCmd

fn group_id() -> Option<Id>

Report the [ArgGroup::id][crate::ArgGroup::id] for this set of arguments

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

Append to [Command] so it can instantiate Self.

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

Append to [Command] so it can update self.

impl Clone for ExportChainSpecCmd

fn clone(&self) -> ExportChainSpecCmd

Returns a copy of the value.

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

Performs copy-assignment from source.

impl CommandFactory for ExportChainSpecCmd

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 ExportChainSpecCmd

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

Formats the value using the given formatter.

impl FromArgMatches for ExportChainSpecCmd

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 ExportChainSpecCmd

fn parse() -> Self

Parse from std::env::args_os(), [exit][Error::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][Error::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][Error::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.