feat(platform)!: elected moderation team declaration with frozen election parameters and interim mode - #4886
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Understand this PR’s impact Explore downstream dependencies and potential security impact with Blast Radius. 📝 WalkthroughWalkthroughChangesThe pull request adds Elected moderation
Priority: ➖ Normal Estimated code review effort: 5 (Critical) | ~90 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant ContractCreator
participant ContractValidation
participant ContractModerationConfig
participant BatchTransition
participant ContractModerationGate
ContractCreator->>ContractValidation: declare elected moderation
ContractValidation->>ContractModerationConfig: validate schemas and timing bounds
ContractModerationConfig-->>ContractValidation: accept or reject declaration
BatchTransition->>ContractModerationGate: submit document transitions
ContractModerationGate->>ContractModerationConfig: check interim moderators and blocked types
ContractModerationGate-->>BatchTransition: pass unblocked transitions or return error 41200
Suggested reviewers: Merge Risk: 🟡 Moderate · up to Fix the invalid creation test before merging; also align the elected-moderation documentation with the implemented type, error ranges, and electorate. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 71.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 100 functions across 24 files. (2 skipped: 2 unsupported.)
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…tion parameters and interim mode A data contract may declare, when it is created, that its moderators are a team elected by masternodes: a third ContractModerators kind, Elected, with frozen election parameters (join and vote windows, challenge cool-down, bounded by four new SystemLimits), the moderated document types, the charter envelope (abilities and per-type per-action moderators fee maximums), the interim moderators until a team is seated, and whether the owner is protected. validate_moderation_config v0 checks the declaration against the contract's document schemas; validate_config_update 2 refuses every change to it and entering or leaving elected moderation; the batch transformer's contract_moderation_gate v0 refuses every transition of a moderated type while nobody moderates (ContractModeratedDocumentTypeNotYetUsableError, 41200). Interim moderators moderate and claim the pot as the merged kinds do. No election exists yet. Closes #4877. Part of #4865. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…e the PR opened - the gate test's `by_type` closure could not tie the map's key lifetime to the transitions, so the test binary did not build: it is a fn with a lifetime now - three elected.rs assertions matched the Debug rendering of the errors, which escapes the quotes around document type names: they render with Display now - the "window under a day" cases lowered the one-week default by a second, which is still within bounds: they are one second under the minimum now - the "wider moderated set" case named a type the contract lacked, so the declaration's own validation refused before the frozen-config check under test: the update adds the type it names now - a type alias for the freeze test's case table (clippy type_complexity) Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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…Moderators A contract's config is embedded by value wherever a contract is, and the document create action carries an owned contract through its vote poll info. The declaration grew that action past clippy's large_enum_variant threshold on BatchedTransitionAction, which CI treats as an error. The wire format is unchanged. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Actionable comments posted: 4
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Inline comments:
In `@book/src/data-model/contract-moderation.md`:
- Line 31: Update the documented ContractModerators enum variant from
Elected(ElectedModerators) to Elected(Box<ElectedModerators>) so it
matches the boxed Rust representation, while leaving the JSON shape unchanged.
In `@book/src/error-handling/error-codes.md`:
- Around line 121-122: Remove the duplicate Contract Moderation row from the
error-code table, preserving the existing complete 41100-41118 range and its
41117/41118 assignments. Keep the separate 41200-41299 Contract Moderation Teams
row unchanged.
In
`@packages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/contract_user_moderation/tests.rs`:
- Line 3251: Update the accepted-minimum test around Setup::new and
setup.contract so the contract used by the declaration remains uncommitted
before process runs. Use a fresh platform or a setup path that avoids committing
the initial contract, while preserving the existing success assertion.
In `@packages/rs-platform-version/src/version/v14.rs`:
- Line 468: Update the protocol documentation comment near
ContractModerators::Elected to state that the elector set includes both
masternodes and evonodes, matching the contract-moderation documentation.
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book/src/data-model/contract-moderation.mdbook/src/error-handling/error-codes.mdpackages/rs-dpp/src/data_contract/config/methods/validate_update/v2/mod.rspackages/rs-dpp/src/data_contract/config/moderation/elected.rspackages/rs-dpp/src/data_contract/config/moderation/mod.rspackages/rs-dpp/src/data_contract/serialized_version/mod.rspackages/rs-dpp/src/errors/consensus/codes.rspackages/rs-dpp/src/errors/consensus/state/contract_moderation/contract_moderated_document_type_not_yet_usable_error.rspackages/rs-dpp/src/errors/consensus/state/contract_moderation/mod.rspackages/rs-dpp/src/errors/consensus/state/state_error.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/transformer/v0/contract_moderation_gate/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/transformer/v0/contract_moderation_gate/v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/transformer/v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/contract_user_moderation/state/v0/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/contract_user_moderation/tests.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/data_contract_create/basic_structure/v2/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/data_contract_update/basic_structure/v2/mod.rspackages/rs-platform-version/src/version/mocks/v2_test.rspackages/rs-platform-version/src/version/system_limits/mod.rspackages/rs-platform-version/src/version/system_limits/v1.rspackages/rs-platform-version/src/version/system_limits/v2.rspackages/rs-platform-version/src/version/system_limits/v3.rspackages/rs-platform-version/src/version/system_limits/v4.rspackages/rs-platform-version/src/version/v14.rspackages/wasm-dpp/src/errors/consensus/consensus_error.rspackages/wasm-dpp2/src/data_contract/model.rs
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…ration interim
Per Sam: the abilities a charter may claim are declared on each moderated
document type, not once for the contract. `moderated_document_types` is now
`BTreeMap<DocumentName, BTreeSet<ModerationAbility>>` (on the wire
`"moderatedDocumentTypes": {"post": ["ban", "deleteDocuments"]}`, the
`abilities` key is gone and refused); each set is non-empty, and
`deleteDocuments` needs that type flagged `canBeDeletedByModerators`, not any
type. The lists stay contract-wide.
Also per Sam: a fourth interim, `InterimModerators::NoModeration`
(`{"$type": "noModeration"}`): nobody moderates and nobody claims the pot
until a team is seated, as under `notYetUsable`, but the moderated types are
used unmoderated meanwhile instead of being blocked.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Document restore (#4885) took StateError discriminants 137-140 and codes 41119-41122: the elected team error moves to discriminant 141 (41200 kept), the changelog entry becomes 22, and the elector set names masternodes and evonodes as the book does. The book's enum snippet shows the boxed variant. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…ities and fee maximums
Per Sam: `moderated_document_types` is `BTreeMap<DocumentName, ModeratedDocumentType>`
where the entry holds the non-empty `abilities` and an optional
`moderators_action_fee_maximums`; the separate top-level fee map is gone (and
refused as an unknown key). A charter can therefore only ever charge on a
type the team moderates. Wire:
`"moderatedDocumentTypes": {"post": {"abilities": ["ban"], "moderatorsActionFeeMaximums": {"create": 1000}}}`.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…ed moderation snippet Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
…ration
Per Sam: a type's own `actionFees.moderators` amount is already the most a
team may charge, and a charter charges a share of it (the charter contract's
business), so the declaration carries no fee maximums. `moderated_document_types`
is `BTreeMap<DocumentName, BTreeSet<ModerationAbility>>` again
(`"moderatedDocumentTypes": {"post": ["ban"]}`); `ModeratorsActionFeeMaximums`
and the per-type entry are gone, and a `moderatorsActionFeeMaximums` key is
refused as unknown. The signer's fee agreement names the declared amounts and a
charter can only lower what is charged, so no agreement can mismatch a seated
charter.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Issue being fixed or feature implemented
Closes #4877. Part of #4865 (decentralized moderation teams), item B1 of the PR split. Protocol version 14 on
v4.2-dev, tables edited in place.A data contract can now declare that its moderators are an elected team: a third
ContractModeratorsvariant,Elected(ElectedModerators), next toContractOwnerandAppointedModerators. The declaration is fixed when the contract is created and never changes. No election exists yet: until a team is seated the contract is in its interim, moderated by the interim moderators the declaration names, or by nobody, in which case the moderated document types cannot be used.Decisions implemented: D3, D5, D6, D7, D8, D17, D18, D19, D20, D25, D47, D62, D64 of #4865; D63 (charter fee maximums) is dropped per Sam, 2026-09-22: a type's
actionFees.moderatorsamount is already the most a team may charge, and a charter charges a share of it.What was done?
The declaration
u32, bounded by four newSystemLimits(min/max_contract_moderation_election_window_seconds,min/max_contract_moderation_challenge_cool_down_seconds; 1 day to 4 weeks, 2 weeks to 3 years). The windows default to one week when the JSON leaves them out; the cool-down has no default and is required. Nothing reads them yet.banneeds the banlist,suspendthe suspension list,warnthe warning list,deleteDocumentsthat type flaggedcanBeDeletedByModerators). The lists stay contract-wide: an ability on a type is what a team may do over the documents of that type.actionFees.moderatorsamount is the most a team may charge on its actions, a charter charges a share of it (the charter contract's business), and the owner part stays what the type declares, immutable as before. Because a charter can only lower what is charged, the signer's$actionFeeAgreementto the declared amounts never mismatches a seated charter.contractOwner,appointedModerators(the merged kinds, same authority, same limit, same existence check at create),notYetUsable, ornoModeration(per Sam, 2026-09-21: nobody moderates and nobody claims the pot until a team is seated, as undernotYetUsable, but the moderated types are used unmoderated meanwhile instead of being blocked). The interim moderators areteam(), so they claim the moderators pot as today. UndernotYetUsablenobody moderates, nobody claims (the pot accumulates for the team to come), and every document transition of a moderated type is refused.ownerProtected, default false. NewContractModerationConfig::protects()is what the moderation transition checks for ban, suspend, warn and document-deletion targets: whoever may moderate, plus the owner when the flag says so. During the interim the owner is protected whenever it moderates, flag or not.Consensus changes
validate_moderation_configv0 (edited in place, unreleased) now takes the raw document schemas instead of a bool, and checks the elected declaration: every bound, the moderated set, the envelope (unknown type, no action, zero, overMAX_CREDITS), and the interim set through the existingidentity_ids()path. Refused withInvalidContractModerationConfigError(10900) and a reason starting withelected moderation:.validate_config_update2 (edited in place) refuses, withDataContractConfigUpdateError, every change to the declaration and entering or leaving elected moderation. The merged kinds still swap moderators freely.contract_moderation_gatev0 (edited in place) runs the interim block before the lists: on anotYetUsablecontract every transition of a moderated type, deletions included, is refused, paid, with newContractModeratedDocumentTypeNotYetUsableError(41200, new band 41200-41299 for moderation teams;StateErrordiscriminant 137, appended) and its nonce bump, in a block and in the mempool. The lists are read only for the transitions on the other types, and not at all when nothing is left.ContractModerationRefusal.deletionsbecamepassed.identity_ids()route (41110).My calls, open to change
notYetUsableandnoModerationmean nobody moderates anything, the owner included, and nobody claims the moderators pot. The three interim kinds are exclusive per D6.joinWindow,voteWindow,challengeCoolDownwithout a unit suffix, likecanBeDeletedByModeratorsFor.Out of scope
The seated team and its gate (H1), the election (H2), charter-priced amounts (F2), the charter contract (C1, #4878). The wasm-sdk, js-evo-sdk, Swift and Kotlin need nothing until a team exists.
Coordination
Rebased over #4872 (warning list), which is why
warnis already an ability. H1 (seated team) takes the next key of the contract's other tree and adds the seated-team clause tomay_moderate,teamand the gate. Keep the variant additive.How Has This Been Tested?
rs-dppconfig/moderation/elected.rs: accepted at every bound and refused one second outside each; moderated set empty or unknown, and a non-deletable type accepted; envelope empty or unbacked for each ability; the interim set limit; each interim kind's authority, team, protection and block; JSON and platform-value round trip (a credit amount past 2^53 as a string in JSON), defaults, and every misspelled or misplaced key refused.config/methods/validate_update/v2: an update refused for each of the eight fields and for entering or leaving.state_error.rs: discriminant 137 pinned.rs-drive-abcicontract_moderation_gate: the block next to a passing type with one read, and alone with none.rs-drive-abcicontract_user_moderation/tests.rs: owner interim (bans, others refused, five refused updates, an update adding a type accepted), appointed interim (moderator and owner ban, stranger refused, both protected, the set is the pot's recipients),notYetUsable(create refused in the mempool and paid in a block, another type accepted, nobody moderates, no recipients), and a create refused for each of six bad declarations while the same one at its minimums is accepted, plus entering by update refused.cargo test -p dpp --features json-conversion --lib(moderation, validate_update, state_error),cargo test -p platform-version,cargo test -p drive-abci --lib(moderation, gate, fee claim, action fees, contract create and update),cargo check --testson drive and both wasm crates, clippy and fmt. CI does the rest.Breaking Changes
Consensus (protocol version 14, unreleased): a new
ContractModeratorsvariant in the contract's bincode config, a newSystemLimitsgroup, a newStateErrorvariant (41200), andContractModerationConfig::validatetakes the document schemas instead of a bool.Checklist:
structure.rs, regeneratedgrovedb-structure.json, and checked the structure viewer link posted on this pull requestFor repository code-owners and collaborators only
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New Features
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