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feat(rpc): Added previousConsecutiveDKGFailures for rotation in quorum rpc (#5158)

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## Issue being fixed or feature implemented
Platform and research team have requested this change.

## What was done?
`quorum info` was updated with the introduction of new field
`previousConsecutiveDKGFailures` that be returned only for rotated
LLMQs.
This field will hold the number of previously consecutive failed DGKs
for the corresponding quorumIndex before the currently active one.
Note: If no previously commitments were found then 0 will be returned
for `previousConsecutiveDKGFailures`.

Example:

- DKG `A` was successful
- DKG `B` failed
- DKG `C` failed
- DKG `D` was successful
- DKG `E` was successful

- `previousConsecutiveDKGFailures` = 0 when requesting for quorum `A`
(because `A` is the first ever created quorum for that quorumIndex)
- `previousConsecutiveDKGFailures` = 2 when requesting for quorum `D`
- `previousConsecutiveDKGFailures` = 0 when requesting for quorum `E`

## How Has This Been Tested?

## Breaking Changes

## Checklist:
- [x] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have added or updated relevant unit/integration/functional/e2e
tests
- [x] I have made corresponding changes to the documentation

**For repository code-owners and collaborators only**
- [x] I have assigned this pull request to a milestone

Co-authored-by: thephez <thephez@users.noreply.github.com>
This commit is contained in:
Odysseas Gabrielides 2023-01-17 17:51:06 +02:00 committed by GitHub
parent e7e48329f7
commit f0009acfae
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4
doc/release-notes-5158.md Normal file
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@ -0,0 +1,4 @@
Updated RPCs
--------
- `quorum info`: The new `previousConsecutiveDKGFailures` field will be returned for rotated LLMQs. This field will hold the number of previous consecutive DKG failures for the corresponding quorumIndex before the currently active one. Note: If no previous commitments were found then 0 will be returned for `previousConsecutiveDKGFailures`.

11
src/rpc/quorums.cpp
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@ -189,6 +189,17 @@ static UniValue BuildQuorumInfo(const llmq::CQuorumCPtr& quorum, bool includeMem
ret.pushKV("quorumIndex", quorum->qc->quorumIndex);
ret.pushKV("minedBlock", quorum->minedBlockHash.ToString());
if (quorum->params.useRotation) {
auto previousActiveCommitment = llmq::quorumBlockProcessor->GetLastMinedCommitmentsByQuorumIndexUntilBlock(quorum->params.type, quorum->m_quorum_base_block_index, quorum->qc->quorumIndex, 0);
if (previousActiveCommitment.has_value()) {
int previousConsecutiveDKGFailures = (quorum->m_quorum_base_block_index->nHeight - previousActiveCommitment.value()->nHeight) / quorum->params.dkgInterval - 1;
ret.pushKV("previousConsecutiveDKGFailures", previousConsecutiveDKGFailures);
}
else {
ret.pushKV("previousConsecutiveDKGFailures", 0);
}
}
if (includeMembers) {
UniValue membersArr(UniValue::VARR);
for (size_t i = 0; i < quorum->members.size(); i++) {