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services/horizon: Add Liquidity Pools to asset stats #3887

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merged 2 commits into from
Sep 3, 2021

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bartekn
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@bartekn bartekn commented Sep 2, 2021

PR Checklist

PR Structure

  • This PR has reasonably narrow scope (if not, break it down into smaller PRs).
  • This PR avoids mixing refactoring changes with feature changes (split into two PRs
    otherwise).
  • This PR's title starts with name of package that is most changed in the PR, ex.
    services/friendbot, or all or doc if the changes are broad or impact many
    packages.

Thoroughness

  • This PR adds tests for the most critical parts of the new functionality or fixes.
  • I've updated any docs (developer docs, .md
    files, etc... affected by this change). Take a look in the docs folder for a given service,
    like this one.

Release planning

  • I've updated the relevant CHANGELOG (here for Horizon) if
    needed with deprecations, added features, breaking changes, and DB schema changes.
  • I've decided if this PR requires a new major/minor version according to
    semver, or if it's mainly a patch change. The PR is targeted at the next
    release branch if it's not a patch change.

What

This commit adds Liquidity Pools to asset stats.

Close #3838.

Why

Assets stats should include all data from all ledger entries so the sum of balances equals the sum of circulating supply of an issued asset.

Known limitations

[TODO or N/A]

@bartekn bartekn requested a review from a team September 2, 2021 22:55
Comment on lines +240 to +246
var lpType xdr.LiquidityPoolType
if pre != nil {
lpType = pre.Body.Type
}
if post != nil {
lpType = post.Body.Type
}
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Sanity check: can both pre and post be set? If so, this block will overwrite lpType.

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Both can be set but it doesn't matter because the type cannot be changed. We basically want to extract ledger entry type from the change. I guess this should be a method on ingest.Change.

@Shaptic Shaptic requested a review from a team September 3, 2021 01:21
@bartekn bartekn merged commit faa8379 into stellar:amm Sep 3, 2021
@bartekn bartekn deleted the liquidity-pools-assets-stats branch September 3, 2021 14:34
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3 participants