Method try_spawn

types/src/reth.rs:459–649

Consumes the builder and spawns `reth`. If spawning fails, returns an error.

(self)

    /// Consumes the builder and spawns `reth`. If spawning fails, returns an error.
    pub fn try_spawn(self) -> Result<RethInstance, NodeError> {
        let bin_path = self
            .program
            .as_ref()
            .map_or_else(|| RETH.as_ref(), |bin| bin.as_os_str())
            .to_os_string();
        let mut cmd = Command::new(&bin_path);
        // `reth` uses stdout for its logs
        cmd.stdout(Stdio::piped());

        // Use Reth's `node` subcommand.
        cmd.arg("node");

        // Set the ports if they are not the default.
        if self.http_port != DEFAULT_HTTP_PORT {
            cmd.arg("--http.port").arg(self.http_port.to_string());
        }

        if self.ws_port != DEFAULT_WS_PORT {
            cmd.arg("--ws.port").arg(self.ws_port.to_string());
        }

        if self.auth_port != DEFAULT_AUTH_PORT {
            cmd.arg("--authrpc.port").arg(self.auth_port.to_string());
        }

        if self.p2p_port != DEFAULT_P2P_PORT {
            cmd.arg("--discovery.port").arg(self.p2p_port.to_string());
        }

        // If the `dev` flag is set, enable it.
        if self.dev {
            // Enable the dev mode.
            // This mode uses a local proof-of-authority consensus engine with either fixed block
            // times or automatically mined blocks.
            // Disables network discovery and enables local http server.
            // Prefunds 20 accounts derived by mnemonic "test test test test test test test test
            // test test test junk" with 10 000 ETH each.
            cmd.arg("--dev");

            // If the block time is set, use it.
            if let Some(block_time) = self.block_time {
                cmd.arg("--dev.block-time").arg(block_time);
            }
        }

        // If IPC is not enabled on the builder, disable it.
        if !self.ipc_enabled {
            cmd.arg("--ipcdisable");
        }

        // Open the HTTP API.
        cmd.arg("--http");
        cmd.arg("--http.api").arg(API);

        // Open the WS API.
        cmd.arg("--ws");
        cmd.arg("--ws.api").arg(API);