Enum cw_utils::ThresholdResponse

pub enum ThresholdResponse {
    AbsoluteCount {
        weight: u64,
        total_weight: u64,
    },
    AbsolutePercentage {
        percentage: Decimal,
        total_weight: u64,
    },
    ThresholdQuorum {
        threshold: Decimal,
        quorum: Decimal,
        total_weight: u64,
    },
}

This defines the different ways tallies can happen. Every contract should support a subset of these, ideally all.

The total_weight used for calculating success as well as the weights of each individual voter used in tallying should be snapshotted at the beginning of the block at which the proposal starts (this is likely the responsibility of a correct cw4 implementation).

Variants

AbsoluteCount

Fields

weight: u64

total_weight: u64

Declares that a fixed weight of yes votes is needed to pass. It does not matter how many no votes are cast, or how many do not vote, as long as weight yes votes are cast.

This is the simplest format and usually suitable for small multisigs of trusted parties, like 3 of 5. (weight: 3, total_weight: 5)

A proposal of this type can pass early as soon as the needed weight of yes votes has been cast.

AbsolutePercentage

Fields

percentage: Decimal

total_weight: u64

Declares a percentage of the total weight that must cast Yes votes, in order for a proposal to pass. The passing weight is computed over the total weight minus the weight of the abstained votes.

This is useful for similar circumstances as AbsoluteCount, where we have a relatively small set of voters, and participation is required. It is understood that if the voting set (group) changes between different proposals that refer to the same group, each proposal will work with a different set of voter weights (the ones snapshotted at proposal creation), and the passing weight for each proposal will be computed based on the absolute percentage, times the total weights of the members at the time of each proposal creation.

Example: we set percentage to 51%. Proposal 1 starts when there is a total_weight of 5. This will require 3 weight of Yes votes in order to pass. Later, the Proposal 2 starts but the total_weight of the group has increased to 9. That proposal will then automatically require 5 Yes of 9 to pass, rather than 3 yes of 9 as would be the case with AbsoluteCount.

ThresholdQuorum

Fields

threshold: Decimal

quorum: Decimal

total_weight: u64

In addition to a threshold, declares a quorum of the total votes that must participate in the election in order for the vote to be considered at all. Within the votes that were cast, it requires threshold votes in favor. That is calculated by ignoring the Abstain votes (they count towards quorum, but do not influence threshold). That is, we calculate Yes / (Yes + No + Veto) and compare it with threshold to consider if the proposal was passed.

It is rather difficult for a proposal of this type to pass early. That can only happen if the required quorum has been already met, and there are already enough Yes votes for the proposal to pass.

30% Yes votes, 10% No votes, and 20% Abstain would pass early if quorum <= 60% (who has cast votes) and if the threshold is <= 37.5% (the remaining 40% voting no => 30% yes + 50% no). Once the voting period has passed with no additional votes, that same proposal would be considered successful if quorum <= 60% and threshold <= 75% (percent in favor if we ignore abstain votes).

This type is more common in general elections, where participation is often expected to be low, and AbsolutePercentage would either be too high to pass anything, or allow low percentages to pass, independently of if there was high participation in the election or not.

Trait Implementations

impl Clone for ThresholdResponse

fn clone(&self) -> ThresholdResponse

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ThresholdResponse

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ThresholdResponse

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for ThresholdResponse

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(gen: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl PartialEq for ThresholdResponse

fn eq(&self, other: &ThresholdResponse) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ThresholdResponse

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ThresholdResponse