diff options
Diffstat (limited to 'src/main.rs')
| -rw-r--r-- | src/main.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/main.rs b/src/main.rs index 7261d6a..65134d8 100644 --- a/src/main.rs +++ b/src/main.rs @@ -97,12 +97,32 @@ struct Args { #[arg(long, value_name = "COUNT", default_value_t = 12)] neighbours: usize, + /// A name for this node, shown next to its public key (/peers, metrics, logs). + /// Published in the swarm's member list; not unique, never an identity. + #[arg(long, value_name = "NAME", value_parser = parse_alias)] + alias: Option<String>, + /// Test hook: start on a non-genesis epoch of this generation (with a fixed dummy /// id), to check that nodes on different epochs refuse to sync. #[arg(long, hide = true, requires = "debug_api", value_name = "GENERATION")] debug_epoch: Option<u64>, } +/// Up to 64 characters, no control characters, not blank. +fn parse_alias(value: &str) -> Result<String, String> { + let alias = value.trim(); + if alias.is_empty() { + return Err("must not be blank".to_owned()); + } + if alias.chars().count() > 64 { + return Err("must be at most 64 characters".to_owned()); + } + if alias.chars().any(char::is_control) { + return Err("must not contain control characters".to_owned()); + } + Ok(alias.to_owned()) +} + #[tokio::main] async fn main() -> Result<()> { logging::init(); @@ -201,6 +221,7 @@ async fn main() -> Result<()> { swarm_key, run_id: uuid::Uuid::new_v4().into_bytes(), neighbours_k: args.neighbours.max(2), + alias: args.alias, neighbours: Default::default(), pulling: Default::default(), rtt: Default::default(), |