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Merged
merged 1 commit into from
May 28, 2020
Merged

Add more stake-related ledger queries #2161

merged 1 commit into from
May 28, 2020

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intricate
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@intricate intricate commented May 28, 2020 •
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@intricate intricate added the consensus issues related to ouroboros-consensus label May 28, 2020
@intricate intricate self-assigned this May 28, 2020
@intricate intricate requested review from dcoutts and mrBliss May 28, 2020 02:11
@intricate intricate marked this pull request as ready for review May 28, 2020 05:03
@intricate intricate changed the title Add GetFilteredRegisteredStakeCreds and GetFilteredDelegations ledger queries Add more stake-related ledger queries May 28, 2020
mrBliss
mrBliss approved these changes May 28, 2020
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LGTM

dcoutts
dcoutts requested changes May 28, 2020
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I think we will not need the GetFilteredRegisteredStakeCreds and just need the other two. I'm double checking this...

ouroboros-consensus-shelley/src/Ouroboros/Consensus/Shelley/Ledger/Ledger.hs Outdated
Comment on lines 340 to 342
GetFilteredRegisteredStakeCreds
:: Set (SL.Credential 'SL.Staking c)
-> Query (ShelleyBlock c) (SL.StakeCreds c)
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I'm double checking, but I think this one will not be needed, since the StakeCreds does not contain any useful information, and indeed will soon be changed to be just a Set once we remove decaying rewards.

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indeed!

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dcoutts commented May 28, 2020

After consulting with @JaredCorduan we think that indeed we do not need to look up the _stkCreds at all, and just need to look at the _rewards and _delegations. The _rewards will have an entry when the address is registered at all, and _delegations will only have an entry when there is a current/active delegation choice.

So we probably only want a single query, given the set of stake key (hashes): look up in both the _rewards and _delegations and return both maps. So I think you can do that by doing the Map.restrictKeys on both maps as you do now. We can merge them on the client side if we need to.

@intricate intricate force-pushed the intricate/more-stake-cred-ledger-queries branch from dc7d1cb to 6538fac Compare May 28, 2020 17:49
@intricate intricate requested a review from dcoutts May 28, 2020 17:50
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LGTM!

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dcoutts commented May 28, 2020

bors merge

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iohk-bors bot commented May 28, 2020

Build succeeded

@iohk-bors iohk-bors bot merged commit 7826943 into master May 28, 2020
@iohk-bors iohk-bors bot deleted the intricate/more-stake-cred-ledger-queries branch May 28, 2020 21:23
coot pushed a commit that referenced this pull request May 16, 2022
@iohk-bors @intricate
Merge #2161
8572312 
2161: Add more stake-related ledger queries r=dcoutts a=intricate

Requirement for IntersectMBO/cardano-node#1053

Co-authored-by: Luke Nadur <19835357+intricate@users.noreply.github.com>
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@dcoutts dcoutts dcoutts approved these changes

+2 more reviewers

@JaredCorduan JaredCorduan JaredCorduan left review comments

@mrBliss mrBliss mrBliss approved these changes

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