91 lines
2.6 KiB
Go
91 lines
2.6 KiB
Go
package cli
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import (
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"bufio"
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"fmt"
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"strings"
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"github.com/spf13/cobra"
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"github.com/cosmos/cosmos-sdk/client/context"
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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/version"
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"github.com/cosmos/cosmos-sdk/x/auth"
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"github.com/cosmos/cosmos-sdk/x/auth/client/utils"
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govtypes "github.com/cosmos/cosmos-sdk/x/gov/types"
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paramscutils "github.com/cosmos/cosmos-sdk/x/params/client/utils"
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"github.com/cosmos/cosmos-sdk/x/params/types"
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)
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// GetCmdSubmitProposal implements a command handler for submitting a parameter
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// change proposal transaction.
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func GetCmdSubmitProposal(cdc *codec.Codec) *cobra.Command {
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cmd := &cobra.Command{
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Use: "param-change [proposal-file]",
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Args: cobra.ExactArgs(1),
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Short: "Submit a parameter change proposal",
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Long: strings.TrimSpace(
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fmt.Sprintf(`Submit a parameter proposal along with an initial deposit.
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The proposal details must be supplied via a JSON file. For values that contains
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objects, only non-empty fields will be updated.
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IMPORTANT: Currently parameter changes are evaluated but not validated, so it is
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very important that any "value" change is valid (ie. correct type and within bounds)
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for its respective parameter, eg. "MaxValidators" should be an integer and not a decimal.
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Proper vetting of a parameter change proposal should prevent this from happening
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(no deposits should occur during the governance process), but it should be noted
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regardless.
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Example:
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$ %s tx gov submit-proposal param-change <path/to/proposal.json> --from=<key_or_address>
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Where proposal.json contains:
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{
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"title": "Staking Param Change",
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"description": "Update max validators",
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"changes": [
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{
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"subspace": "staking",
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"key": "MaxValidators",
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"value": 105
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}
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],
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"deposit": [
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{
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"denom": "stake",
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"amount": "10000"
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}
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]
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}
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`,
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version.ClientName,
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),
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),
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RunE: func(cmd *cobra.Command, args []string) error {
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inBuf := bufio.NewReader(cmd.InOrStdin())
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txBldr := auth.NewTxBuilderFromCLI(inBuf).WithTxEncoder(utils.GetTxEncoder(cdc))
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cliCtx := context.NewCLIContextWithInput(inBuf).WithCodec(cdc)
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proposal, err := paramscutils.ParseParamChangeProposalJSON(cdc, args[0])
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if err != nil {
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return err
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}
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from := cliCtx.GetFromAddress()
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content := types.NewParameterChangeProposal(proposal.Title, proposal.Description, proposal.Changes.ToParamChanges())
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msg := govtypes.NewMsgSubmitProposal(content, proposal.Deposit, from)
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if err := msg.ValidateBasic(); err != nil {
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return err
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}
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return utils.GenerateOrBroadcastMsgs(cliCtx, txBldr, []sdk.Msg{msg})
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},
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}
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return cmd
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}
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