52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
package params
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import (
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"fmt"
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sdk "github.com/cosmos/cosmos-sdk/types"
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govtypes "github.com/cosmos/cosmos-sdk/x/gov/types"
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)
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// NewParamChangeProposalHandler creates a new governance Handler for a ParamChangeProposal
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func NewParamChangeProposalHandler(k Keeper) govtypes.Handler {
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return func(ctx sdk.Context, content govtypes.Content) sdk.Error {
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switch c := content.(type) {
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case ParameterChangeProposal:
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return handleParameterChangeProposal(ctx, k, c)
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default:
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errMsg := fmt.Sprintf("unrecognized param proposal content type: %T", c)
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return sdk.ErrUnknownRequest(errMsg)
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}
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}
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}
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func handleParameterChangeProposal(ctx sdk.Context, k Keeper, p ParameterChangeProposal) sdk.Error {
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for _, c := range p.Changes {
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ss, ok := k.GetSubspace(c.Subspace)
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if !ok {
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return ErrUnknownSubspace(k.codespace, c.Subspace)
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}
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var err error
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if len(c.Subkey) == 0 {
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k.Logger(ctx).Info(
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fmt.Sprintf("setting new parameter; key: %s, value: %s", c.Key, c.Value),
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)
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err = ss.Update(ctx, []byte(c.Key), []byte(c.Value))
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} else {
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k.Logger(ctx).Info(
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fmt.Sprintf("setting new parameter; key: %s, subkey: %s, value: %s", c.Key, c.Subspace, c.Value),
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)
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err = ss.UpdateWithSubkey(ctx, []byte(c.Key), []byte(c.Subkey), []byte(c.Value))
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}
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if err != nil {
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return ErrSettingParameter(k.codespace, c.Key, c.Subkey, c.Value, err.Error())
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}
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}
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return nil
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}
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