forked from hush/silentdragonlite-cli
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317 lines
12 KiB
317 lines
12 KiB
use std::io::{self, Error, ErrorKind};
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use std::sync::Arc;
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use std::sync::mpsc::{channel, Sender, Receiver};
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use silentdragonlitelib::{commands, startup_helpers,
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lightclient::{self, LightClient, LightClientConfig},
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};
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use log::{info, error, LevelFilter};
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use log4rs::append::rolling_file::RollingFileAppender;
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use log4rs::encode::pattern::PatternEncoder;
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use log4rs::config::{Appender, Config, Root};
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use log4rs::filter::threshold::ThresholdFilter;
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use log4rs::append::rolling_file::policy::compound::{
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CompoundPolicy,
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trigger::size::SizeTrigger,
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roll::fixed_window::FixedWindowRoller,
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};
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/// Build the Logging config
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fn get_log_config(config: &LightClientConfig) -> io::Result<Config> {
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let window_size = 3; // log0, log1, log2
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let fixed_window_roller =
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FixedWindowRoller::builder().build("SilentDragonLite-light-wallet-log{}",window_size).unwrap();
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let size_limit = 5 * 1024 * 1024; // 5MB as max log file size to roll
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let size_trigger = SizeTrigger::new(size_limit);
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let compound_policy = CompoundPolicy::new(Box::new(size_trigger),Box::new(fixed_window_roller));
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Config::builder()
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.appender(
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Appender::builder()
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.filter(Box::new(ThresholdFilter::new(LevelFilter::Info)))
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.build(
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"logfile",
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Box::new(
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RollingFileAppender::builder()
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.encoder(Box::new(PatternEncoder::new("{d} {l}::{m}{n}")))
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.build(config.get_log_path(), Box::new(compound_policy))?,
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),
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),
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)
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.build(
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Root::builder()
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.appender("logfile")
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.build(LevelFilter::Debug),
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)
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.map_err(|e|Error::new(ErrorKind::Other, format!("{}", e)))
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}
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pub fn main() {
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// Get command line arguments
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use clap::{Arg, App};
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let matches = App::new("SilentDragon CLI")
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.version("1.1.0")
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.arg(Arg::with_name("seed")
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.short("s")
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.long("seed")
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.value_name("seed_phrase")
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.help("Create a new wallet with the given 24-word seed phrase. Will fail if wallet already exists")
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.takes_value(true))
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.arg(Arg::with_name("server")
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.long("server")
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.value_name("server")
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.help("Lightwalletd server to connect to.")
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.takes_value(true)
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.default_value(lightclient::DEFAULT_SERVER))
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.arg(Arg::with_name("dangerous")
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.long("dangerous")
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.help("Disable server TLS certificate verification. Use this if you're running a local lightwalletd with a self-signed certificate. WARNING: This is dangerous, don't use it with a server that is not your own.")
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.takes_value(false))
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.arg(Arg::with_name("recover")
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.long("recover")
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.help("Attempt to recover the seed from the wallet")
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.takes_value(false))
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.arg(Arg::with_name("nosync")
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.help("By default, silentdragonlite-cli will sync the wallet at startup. Pass --nosync to prevent the automatic sync at startup.")
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.long("nosync")
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.short("n")
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.takes_value(false))
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.arg(Arg::with_name("COMMAND")
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.help("Command to execute. If a command is not specified, silentdragonlite-cli will start in interactive mode.")
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.required(false)
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.index(1))
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.arg(Arg::with_name("PARAMS")
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.help("Params to execute command with. Run the 'help' command to get usage help.")
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.required(false)
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.multiple(true))
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.get_matches();
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if matches.is_present("recover") {
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// Create a Light Client Config in an attempt to recover the file.
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let config = LightClientConfig {
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server: "0.0.0.0:0".parse().unwrap(),
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chain_name: "main".to_string(),
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sapling_activation_height: 0,
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consensus_branch_id: "000000".to_string(),
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anchor_offset: 0,
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no_cert_verification: false,
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data_dir: None,
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};
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match LightClient::attempt_recover_seed(&config) {
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Ok(seed) => println!("Recovered seed: '{}'", seed),
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Err(e) => eprintln!("Failed to recover seed. Error: {}", e)
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};
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return;
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}
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let command = matches.value_of("COMMAND");
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let params = matches.values_of("PARAMS").map(|v| v.collect()).or(Some(vec![])).unwrap();
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let maybe_server = matches.value_of("server").map(|s| s.to_string());
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let seed = matches.value_of("seed").map(|s| s.to_string());
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let server = LightClientConfig::get_server_or_default(maybe_server);
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// Test to make sure the server has all of scheme, host and port
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if server.scheme_str().is_none() || server.host().is_none() || server.port_part().is_none() {
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eprintln!("Please provide the --server parameter as [scheme]://[host]:[port].\nYou provided: {}", server);
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return;
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}
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let dangerous = matches.is_present("dangerous");
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let nosync = matches.is_present("nosync");
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let (command_tx, resp_rx) = match startup(server, dangerous, seed, !nosync, command.is_none()) {
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Ok(c) => c,
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Err(e) => {
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eprintln!("Error during startup: {}", e);
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error!("Error during startup: {}", e);
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match e.raw_os_error() {
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Some(13) => {
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startup_helpers::report_permission_error();
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},
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_ => {}
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}
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return;
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}
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};
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if command.is_none() {
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start_interactive(command_tx, resp_rx);
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} else {
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command_tx.send(
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(command.unwrap().to_string(),
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params.iter().map(|s| s.to_string()).collect::<Vec<String>>()))
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.unwrap();
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match resp_rx.recv() {
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Ok(s) => println!("{}", s),
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Err(e) => {
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let e = format!("Error executing command {}: {}", command.unwrap(), e);
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eprintln!("{}", e);
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error!("{}", e);
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}
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}
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// Save before exit
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command_tx.send(("save".to_string(), vec![])).unwrap();
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resp_rx.recv().unwrap();
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}
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}
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fn startup(server: http::Uri, dangerous: bool, seed: Option<String>, first_sync: bool, print_updates: bool)
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-> io::Result<(Sender<(String, Vec<String>)>, Receiver<String>)> {
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// Try to get the configuration
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let (config, latest_block_height) = LightClientConfig::create(server.clone(), dangerous)?;
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// Configure logging first.
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let log_config = get_log_config(&config)?;
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log4rs::init_config(log_config).map_err(|e| {
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std::io::Error::new(ErrorKind::Other, e)
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})?;
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let lightclient = match seed {
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Some(phrase) => Arc::new(LightClient::new_from_phrase(phrase, &config, latest_block_height)?),
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None => {
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if config.wallet_exists() {
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Arc::new(LightClient::read_from_disk(&config)?)
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} else {
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println!("Creating a new wallet");
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Arc::new(LightClient::new(&config, latest_block_height)?)
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}
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}
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};
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// Print startup Messages
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info!(""); // Blank line
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info!("Starting SilentDragonLite CLI");
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info!("Light Client config {:?}", config);
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if print_updates {
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println!("Lightclient connecting to {}", config.server);
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}
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// Start the command loop
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let (command_tx, resp_rx) = command_loop(lightclient.clone());
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// At startup, run a sync.
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if first_sync {
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let update = lightclient.do_sync(true);
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if print_updates {
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println!("{}", update);
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}
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}
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Ok((command_tx, resp_rx))
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}
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fn start_interactive(command_tx: Sender<(String, Vec<String>)>, resp_rx: Receiver<String>) {
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// `()` can be used when no completer is required
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let mut rl = rustyline::Editor::<()>::new();
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println!("Ready!");
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let send_command = |cmd: String, args: Vec<String>| -> String {
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command_tx.send((cmd.clone(), args)).unwrap();
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match resp_rx.recv() {
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Ok(s) => s,
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Err(e) => {
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let e = format!("Error executing command {}: {}", cmd, e);
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eprintln!("{}", e);
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error!("{}", e);
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return "".to_string()
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}
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}
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};
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let info = &send_command("info".to_string(), vec![]);
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let chain_name = json::parse(info).unwrap()["chain_name"].as_str().unwrap().to_string();
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loop {
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// Read the height first
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let height = json::parse(&send_command("height".to_string(), vec![])).unwrap()["height"].as_i64().unwrap();
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let readline = rl.readline(&format!("({}) Block:{} (type 'help') >> ",
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chain_name, height));
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match readline {
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Ok(line) => {
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rl.add_history_entry(line.as_str());
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// Parse command line arguments
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let mut cmd_args = match shellwords::split(&line) {
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Ok(args) => args,
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Err(_) => {
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println!("Mismatched Quotes");
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continue;
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}
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};
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if cmd_args.is_empty() {
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continue;
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}
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let cmd = cmd_args.remove(0);
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let args: Vec<String> = cmd_args;
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println!("{}", send_command(cmd, args));
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// Special check for Quit command.
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if line == "quit" {
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break;
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}
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},
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Err(rustyline::error::ReadlineError::Interrupted) => {
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println!("CTRL-C");
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info!("CTRL-C");
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println!("{}", send_command("save".to_string(), vec![]));
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break
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},
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Err(rustyline::error::ReadlineError::Eof) => {
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println!("CTRL-D");
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info!("CTRL-D");
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println!("{}", send_command("save".to_string(), vec![]));
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break
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},
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Err(err) => {
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println!("Error: {:?}", err);
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break
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}
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}
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}
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}
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fn command_loop(lightclient: Arc<LightClient>) -> (Sender<(String, Vec<String>)>, Receiver<String>) {
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let (command_tx, command_rx) = channel::<(String, Vec<String>)>();
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let (resp_tx, resp_rx) = channel::<String>();
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let lc = lightclient.clone();
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std::thread::spawn(move || {
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loop {
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match command_rx.recv_timeout(std::time::Duration::from_secs(5 * 60)) {
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Ok((cmd, args)) => {
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let args = args.iter().map(|s| s.as_ref()).collect();
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let cmd_response = commands::do_user_command(&cmd, &args, lc.as_ref());
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resp_tx.send(cmd_response).unwrap();
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if cmd == "quit" {
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info!("Quit");
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break;
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}
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},
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Err(_) => {
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// Timeout. Do a sync to keep the wallet up-to-date. False to whether to print updates on the console
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info!("Timeout, doing a sync");
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lc.do_sync(false);
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}
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}
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}
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});
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(command_tx, resp_rx)
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}
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