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42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
package v3
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import (
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"cosmossdk.io/core/store"
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sdkmath "cosmossdk.io/math"
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"github.com/cosmos/cosmos-sdk/codec"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/x/distribution/exported"
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"github.com/cosmos/cosmos-sdk/x/distribution/types"
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)
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const (
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ModuleName = "distribution"
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)
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var ParamsKey = []byte{0x09}
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// MigrateStore migrates the x/distribution module state from the consensus version 2 to
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// version 3. Specifically, it takes the parameters that are currently stored
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// and managed by the x/params module and stores them directly into the x/distribution
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// module state.
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func MigrateStore(ctx sdk.Context, storeService store.KVStoreService, legacySubspace exported.Subspace, cdc codec.BinaryCodec) error {
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store := storeService.OpenKVStore(ctx)
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var currParams types.Params
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legacySubspace.GetParamSet(ctx, &currParams)
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// reset unused params
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currParams.BaseProposerReward = sdkmath.LegacyZeroDec()
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currParams.BonusProposerReward = sdkmath.LegacyZeroDec()
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if err := currParams.ValidateBasic(); err != nil {
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return err
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}
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bz, err := cdc.Marshal(&currParams)
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if err != nil {
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return err
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}
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return store.Set(ParamsKey, bz)
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}
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