junobuild-cdn 0.7.1

CDN logic for serving assets in Juno, backed by a request-based storage process.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54

use crate::proposals::errors::{
    JUNO_CDN_PROPOSALS_ERROR_CANNOT_REJECT, JUNO_CDN_PROPOSALS_ERROR_CANNOT_REJECT_INVALID_STATUS,
    JUNO_CDN_PROPOSALS_ERROR_INVALID_HASH,
};
use crate::proposals::workflows::assert::assert_known_proposal_type;
use crate::proposals::{get_proposal, insert_proposal};
use crate::proposals::{Proposal, ProposalStatus, RejectProposal, RejectProposalError};
use crate::strategies::CdnStableStrategy;
use hex::encode;

pub fn reject_proposal(
    cdn_stable: &impl CdnStableStrategy,
    proposition: &RejectProposal,
) -> Result<(), RejectProposalError> {
    let proposal = get_proposal(cdn_stable, &proposition.proposal_id).ok_or_else(|| {
        RejectProposalError::ProposalNotFound(format!(
            "{} ({})",
            JUNO_CDN_PROPOSALS_ERROR_CANNOT_REJECT, proposition.proposal_id
        ))
    })?;

    secure_reject_proposal(cdn_stable, proposition, &proposal)
}

fn secure_reject_proposal(
    cdn_stable: &impl CdnStableStrategy,
    reject_proposal: &RejectProposal,
    proposal: &Proposal,
) -> Result<(), RejectProposalError> {
    if proposal.status != ProposalStatus::Open {
        return Err(RejectProposalError::ProposalNotOpen(format!(
            "{} ({:?})",
            JUNO_CDN_PROPOSALS_ERROR_CANNOT_REJECT_INVALID_STATUS, proposal.status
        )));
    }

    match &proposal.sha256 {
        Some(sha256) if sha256 == &reject_proposal.sha256 => (),
        _ => {
            return Err(RejectProposalError::InvalidSha256(format!(
                "{} ({})",
                JUNO_CDN_PROPOSALS_ERROR_INVALID_HASH,
                encode(reject_proposal.sha256)
            )));
        }
    }

    assert_known_proposal_type(proposal).map_err(RejectProposalError::InvalidType)?;

    let rejected_proposal = Proposal::reject(proposal);
    insert_proposal(cdn_stable, &reject_proposal.proposal_id, &rejected_proposal);

    Ok(())
}