gauge 0.4.1

Allows Tribeca Voting Escrows to vote on token allocations between different Quarries.
Documentation 
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//! Creates a [GaugeVoter].

use vipers::assert_keys_eq;

use crate::*;

/// Accounts for [gauge::create_gauge_voter].
#[derive(Accounts)]
pub struct CreateGaugeVoter<'info> {
    /// The [GaugeVoter] to be created.
    #[account(
        init,
        seeds = [
            b"GaugeVoter".as_ref(),
            gaugemeister.key().as_ref(),
            escrow.key().as_ref(),
        ],
        bump,
        space = 8 + GaugeVoter::LEN,
        payer = payer
    )]
    pub gauge_voter: Account<'info, GaugeVoter>,

    /// [Gaugemeister].
    pub gaugemeister: Account<'info, Gaugemeister>,

    /// [locked_voter::Escrow].
    pub escrow: Account<'info, locked_voter::Escrow>,

    /// Payer.
    #[account(mut)]
    pub payer: Signer<'info>,

    /// System program.
    pub system_program: Program<'info, System>,
}

pub fn handler(ctx: Context<CreateGaugeVoter>) -> Result<()> {
    let gauge_voter = &mut ctx.accounts.gauge_voter;
    gauge_voter.gaugemeister = ctx.accounts.gaugemeister.key();
    gauge_voter.escrow = ctx.accounts.escrow.key();

    gauge_voter.owner = ctx.accounts.escrow.owner;
    gauge_voter.total_weight = 0;
    gauge_voter.weight_change_seqno = 0;

    emit!(GaugeVoterCreateEvent {
        gaugemeister: gauge_voter.gaugemeister,
        rewarder: ctx.accounts.gaugemeister.rewarder,
        gauge_voter_owner: gauge_voter.owner,
    });

    Ok(())
}

impl<'info> Validate<'info> for CreateGaugeVoter<'info> {
    fn validate(&self) -> Result<()> {
        assert_keys_eq!(self.escrow.locker, self.gaugemeister.locker);
        Ok(())
    }
}

/// Event called in [gauge::create_gauge_voter].
#[event]
pub struct GaugeVoterCreateEvent {
    #[index]
    /// The [Gaugemeister].
    pub gaugemeister: Pubkey,
    #[index]
    /// The Rewarder.
    pub rewarder: Pubkey,
    #[index]
    /// Owner of the Escrow of the [GaugeVoter].
    pub gauge_voter_owner: Pubkey,
}