use {
clap::{
crate_description, crate_name, value_t, value_t_or_exit, App, AppSettings, Arg, ArgMatches,
SubCommand,
},
solana_clap_utils::{
input_parsers::keypair_of,
input_validators::{is_keypair_or_ask_keyword, is_port, is_pubkey},
},
solana_gossip::{contact_info::ContactInfo, gossip_service::discover},
solana_sdk::pubkey::Pubkey,
solana_streamer::socket::SocketAddrSpace,
std::{
error,
net::{IpAddr, Ipv4Addr, SocketAddr},
process::exit,
time::Duration,
},
};
fn parse_matches() -> ArgMatches<'static> {
let shred_version_arg = Arg::with_name("shred_version")
.long("shred-version")
.value_name("VERSION")
.takes_value(true)
.default_value("0")
.help("Filter gossip nodes by this shred version");
App::new(crate_name!())
.about(crate_description!())
.version(solana_version::version!())
.setting(AppSettings::SubcommandRequiredElseHelp)
.arg(
Arg::with_name("allow_private_addr")
.long("allow-private-addr")
.takes_value(false)
.help("Allow contacting private ip addresses")
.hidden(true),
)
.subcommand(
SubCommand::with_name("rpc-url")
.about("Get an RPC URL for the cluster")
.arg(
Arg::with_name("entrypoint")
.short("n")
.long("entrypoint")
.value_name("HOST:PORT")
.takes_value(true)
.required(true)
.validator(solana_net_utils::is_host_port)
.help("Rendezvous with the cluster at this entry point"),
)
.arg(
Arg::with_name("all")
.long("all")
.takes_value(false)
.help("Return all RPC URLs"),
)
.arg(
Arg::with_name("any")
.long("any")
.takes_value(false)
.conflicts_with("all")
.help("Return any RPC URL"),
)
.arg(
Arg::with_name("timeout")
.long("timeout")
.value_name("SECONDS")
.takes_value(true)
.default_value("15")
.help("Timeout in seconds"),
)
.arg(&shred_version_arg)
.setting(AppSettings::DisableVersion),
)
.subcommand(
SubCommand::with_name("spy")
.about("Monitor the gossip entrypoint")
.setting(AppSettings::DisableVersion)
.arg(
Arg::with_name("entrypoint")
.short("n")
.long("entrypoint")
.value_name("HOST:PORT")
.takes_value(true)
.validator(solana_net_utils::is_host_port)
.help("Rendezvous with the cluster at this entrypoint"),
)
.arg(
clap::Arg::with_name("gossip_port")
.long("gossip-port")
.value_name("PORT")
.takes_value(true)
.validator(is_port)
.help("Gossip port number for the node"),
)
.arg(
clap::Arg::with_name("gossip_host")
.long("gossip-host")
.value_name("HOST")
.takes_value(true)
.validator(solana_net_utils::is_host)
.help("Gossip DNS name or IP address for the node to advertise in gossip \
[default: ask --entrypoint, or 127.0.0.1 when --entrypoint is not provided]"),
)
.arg(
Arg::with_name("identity")
.short("i")
.long("identity")
.value_name("PATH")
.takes_value(true)
.validator(is_keypair_or_ask_keyword)
.help("Identity keypair [default: ephemeral keypair]"),
)
.arg(
Arg::with_name("num_nodes")
.short("N")
.long("num-nodes")
.value_name("NUM")
.takes_value(true)
.conflicts_with("num_nodes_exactly")
.help("Wait for at least NUM nodes to be visible"),
)
.arg(
Arg::with_name("num_nodes_exactly")
.short("E")
.long("num-nodes-exactly")
.value_name("NUM")
.takes_value(true)
.help("Wait for exactly NUM nodes to be visible"),
)
.arg(
Arg::with_name("node_pubkey")
.short("p")
.long("pubkey")
.value_name("PUBKEY")
.takes_value(true)
.validator(is_pubkey)
.help("Public key of a specific node to wait for"),
)
.arg(&shred_version_arg)
.arg(
Arg::with_name("timeout")
.long("timeout")
.value_name("SECONDS")
.takes_value(true)
.help("Maximum time to wait in seconds [default: wait forever]"),
),
)
.get_matches()
}
fn parse_gossip_host(matches: &ArgMatches, entrypoint_addr: Option<SocketAddr>) -> IpAddr {
matches
.value_of("gossip_host")
.map(|gossip_host| {
solana_net_utils::parse_host(gossip_host).unwrap_or_else(|e| {
eprintln!("failed to parse gossip-host: {}", e);
exit(1);
})
})
.unwrap_or_else(|| {
if let Some(entrypoint_addr) = entrypoint_addr {
solana_net_utils::get_public_ip_addr(&entrypoint_addr).unwrap_or_else(|err| {
eprintln!(
"Failed to contact cluster entrypoint {}: {}",
entrypoint_addr, err
);
exit(1);
})
} else {
IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1))
}
})
}
fn process_spy_results(
timeout: Option<u64>,
validators: Vec<ContactInfo>,
num_nodes: Option<usize>,
num_nodes_exactly: Option<usize>,
pubkey: Option<Pubkey>,
) {
if timeout.is_some() {
if let Some(num) = num_nodes {
if validators.len() < num {
let add = if num_nodes_exactly.is_some() {
""
} else {
" or more"
};
eprintln!(
"Error: Insufficient validators discovered. Expecting {}{}",
num, add,
);
exit(1);
}
}
if let Some(node) = pubkey {
if !validators.iter().any(|x| x.id == node) {
eprintln!("Error: Could not find node {:?}", node);
exit(1);
}
}
}
if let Some(num_nodes_exactly) = num_nodes_exactly {
if validators.len() > num_nodes_exactly {
eprintln!(
"Error: Extra nodes discovered. Expecting exactly {}",
num_nodes_exactly
);
exit(1);
}
}
}
fn process_spy(matches: &ArgMatches, socket_addr_space: SocketAddrSpace) -> std::io::Result<()> {
let num_nodes_exactly = matches
.value_of("num_nodes_exactly")
.map(|num| num.to_string().parse().unwrap());
let num_nodes = matches
.value_of("num_nodes")
.map(|num| num.to_string().parse().unwrap())
.or(num_nodes_exactly);
let timeout = matches
.value_of("timeout")
.map(|secs| secs.to_string().parse().unwrap());
let pubkey = matches
.value_of("node_pubkey")
.map(|pubkey_str| pubkey_str.parse::<Pubkey>().unwrap());
let shred_version = value_t_or_exit!(matches, "shred_version", u16);
let identity_keypair = keypair_of(matches, "identity");
let entrypoint_addr = parse_entrypoint(matches);
let gossip_host = parse_gossip_host(matches, entrypoint_addr);
let gossip_addr = SocketAddr::new(
gossip_host,
value_t!(matches, "gossip_port", u16).unwrap_or_else(|_| {
solana_net_utils::find_available_port_in_range(
IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)),
(0, 1),
)
.expect("unable to find an available gossip port")
}),
);
let discover_timeout = Duration::from_secs(timeout.unwrap_or(u64::MAX));
let (_all_peers, validators) = discover(
identity_keypair,
entrypoint_addr.as_ref(),
num_nodes,
discover_timeout,
pubkey, None, Some(&gossip_addr), shred_version,
socket_addr_space,
)?;
process_spy_results(timeout, validators, num_nodes, num_nodes_exactly, pubkey);
Ok(())
}
fn parse_entrypoint(matches: &ArgMatches) -> Option<SocketAddr> {
matches.value_of("entrypoint").map(|entrypoint| {
solana_net_utils::parse_host_port(entrypoint).unwrap_or_else(|e| {
eprintln!("failed to parse entrypoint address: {}", e);
exit(1);
})
})
}
fn process_rpc_url(
matches: &ArgMatches,
socket_addr_space: SocketAddrSpace,
) -> std::io::Result<()> {
let any = matches.is_present("any");
let all = matches.is_present("all");
let entrypoint_addr = parse_entrypoint(matches);
let timeout = value_t_or_exit!(matches, "timeout", u64);
let shred_version = value_t_or_exit!(matches, "shred_version", u16);
let (_all_peers, validators) = discover(
None, entrypoint_addr.as_ref(),
Some(1), Duration::from_secs(timeout),
None, entrypoint_addr.as_ref(), None, shred_version,
socket_addr_space,
)?;
let rpc_addrs: Vec<_> = validators
.iter()
.filter_map(|contact_info| {
if (any || all || Some(contact_info.gossip) == entrypoint_addr)
&& ContactInfo::is_valid_address(&contact_info.rpc, &socket_addr_space)
{
return Some(contact_info.rpc);
}
None
})
.collect();
if rpc_addrs.is_empty() {
eprintln!("No RPC URL found");
exit(1);
}
for rpc_addr in rpc_addrs {
println!("http://{}", rpc_addr);
if any {
break;
}
}
Ok(())
}
fn main() -> Result<(), Box<dyn error::Error>> {
solana_logger::setup_with_default("solana=info");
let matches = parse_matches();
let socket_addr_space = SocketAddrSpace::new(matches.is_present("allow_private_addr"));
match matches.subcommand() {
("spy", Some(matches)) => {
process_spy(matches, socket_addr_space)?;
}
("rpc-url", Some(matches)) => {
process_rpc_url(matches, socket_addr_space)?;
}
_ => unreachable!(),
}
Ok(())
}