127 lines
3.7 KiB
Rust
127 lines
3.7 KiB
Rust
use crate::validator::Validator;
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use colored::{Color, Colorize};
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use ethabi::Address;
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use std::collections::HashMap;
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use std::fmt::{self, Display, Formatter};
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/// The count of ballots and cast votes, as well as metadata for a particular voter.
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#[derive(Clone, Default)]
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struct VoterStats {
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/// The number of ballots where this voter had a right to vote.
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ballots: usize,
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/// The number of votes cast by this voter.
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voted: usize,
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/// The validator metadata.
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validator: Option<Validator>,
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/// The mining key.
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mining_key: Option<Address>,
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}
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/// A map of vote counts, by voting key.
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#[derive(Clone, Default)]
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pub struct Stats {
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voter_stats: HashMap<Address, VoterStats>,
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}
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impl Stats {
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/// Adds a ballot: `voters` are the voting keys of everyone who was allowed to cast a vote, and
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/// `votes` are the ones that were actually cast.
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pub fn add_ballot<'a, I>(&mut self, voters: I, voted: &[Address])
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where
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I: IntoIterator<Item = &'a Address>,
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{
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for voter in voters {
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let mut vs = self
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.voter_stats
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.entry(voter.clone())
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.or_insert_with(VoterStats::default);
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vs.ballots += 1;
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if voted.contains(voter) {
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vs.voted += 1;
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}
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}
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}
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/// Inserts metadata about a voter: the mining key and the `Validator` information.
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pub fn set_metadata(&mut self, voter: &Address, mining_key: Address, validator: Validator) {
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let vs = self.voter_stats.entry(*voter).or_default();
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vs.validator = Some(validator);
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vs.mining_key = Some(mining_key);
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}
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}
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fn to_display_line((addr, s): (&Address, &VoterStats)) -> Option<DisplayLine> {
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let votes_per_thousand = if s.ballots == 0 {
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1000
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} else {
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s.voted * 1000 / s.ballots
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};
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let mining_key = match s.mining_key {
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None => return None,
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Some(ref key) => format!("{}", key),
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};
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let name = match s.validator {
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None => return None,
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Some(ref v) => format!("{} {}", v.first_name, v.last_name),
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};
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Some(DisplayLine {
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votes_per_thousand,
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voted: s.voted,
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ballots: s.ballots,
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voting_address: *addr,
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mining_key,
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name,
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})
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}
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impl Display for Stats {
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fn fmt(&self, f: &mut Formatter) -> fmt::Result {
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let mut lines: Vec<_> = self
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.voter_stats
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.iter()
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.filter_map(to_display_line)
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.collect();
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lines.sort();
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let header = " Missed Voting key Mining key Name".bold();
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writeln!(f, "{}", header)?;
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for line in lines {
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line.fmt(f)?;
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}
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Ok(())
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}
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}
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/// A line in the output, corresponding to a particular voter.
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#[derive(Ord, PartialOrd, Eq, PartialEq)]
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struct DisplayLine {
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votes_per_thousand: usize,
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voted: usize,
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ballots: usize,
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voting_address: Address,
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mining_key: String,
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name: String,
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}
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impl Display for DisplayLine {
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fn fmt(&self, f: &mut Formatter) -> fmt::Result {
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let text = format!(
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"{:>7},{:5.1}% {} {} {}",
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format!("{}/{}", self.ballots - self.voted, self.ballots),
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100.0 - (self.votes_per_thousand as f32) / 10.0,
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self.voting_address,
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self.mining_key,
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self.name
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);
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let c = if self.votes_per_thousand <= 500 {
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Color::BrightRed
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} else if self.votes_per_thousand <= 750 {
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Color::BrightYellow
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} else if self.votes_per_thousand < 1000 {
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Color::White
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} else {
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Color::BrightGreen
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};
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writeln!(f, "{}", text.color(c))
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}
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}
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