package common import ( "context" "fmt" "strings" "time" "github.com/cosmos/cosmos-sdk/client" "github.com/cosmos/cosmos-sdk/codec" sdk "github.com/cosmos/cosmos-sdk/types" sdkerrors "github.com/cosmos/cosmos-sdk/types/errors" authtx "github.com/cosmos/cosmos-sdk/x/auth/tx" "github.com/kava-labs/kava/x/committee/types" ) // Note: QueryProposer is copied in from the gov module const ( defaultPage = 1 defaultLimit = 30 // should be consistent with tendermint/tendermint/rpc/core/pipe.go:19 ) // Proposer contains metadata of a governance proposal used for querying a proposer. type Proposer struct { ProposalID uint64 `json:"proposal_id" yaml:"proposal_id"` Proposer string `json:"proposer" yaml:"proposer"` } // NewProposer returns a new Proposer given id and proposer func NewProposer(proposalID uint64, proposer string) Proposer { return Proposer{proposalID, proposer} } func (p Proposer) String() string { return fmt.Sprintf("Proposal with ID %d was proposed by %s", p.ProposalID, p.Proposer) } // QueryProposer will query for a proposer of a governance proposal by ID. func QueryProposer(cliCtx client.Context, proposalID uint64) (Proposer, error) { events := []string{ fmt.Sprintf("%s.%s='%s'", sdk.EventTypeMessage, sdk.AttributeKeyAction, types.TypeMsgSubmitProposal), fmt.Sprintf("%s.%s='%s'", types.EventTypeProposalSubmit, types.AttributeKeyProposalID, []byte(fmt.Sprintf("%d", proposalID))), } // NOTE: SearchTxs is used to facilitate the txs query which does not currently // support configurable pagination. searchResult, err := authtx.QueryTxsByEvents(cliCtx, events, defaultPage, defaultLimit, "") if err != nil { return Proposer{}, err } for _, info := range searchResult.Txs { for _, msg := range info.GetTx().GetMsgs() { // there should only be a single proposal under the given conditions if subMsg, ok := msg.(*types.MsgSubmitProposal); ok { return NewProposer(proposalID, subMsg.Proposer), nil } } } return Proposer{}, fmt.Errorf("failed to find the proposer for proposalID %d", proposalID) } // QueryProposalByID returns a proposal from state if present or fallbacks to searching old blocks func QueryProposalByID(cliCtx client.Context, cdc *codec.LegacyAmino, queryRoute string, proposalID uint64) (*types.Proposal, int64, error) { bz, err := cdc.MarshalJSON(types.NewQueryProposalParams(proposalID)) if err != nil { return nil, 0, err } res, height, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/%s", queryRoute, types.QueryProposal), bz) if err == nil { var proposal types.Proposal cdc.MustUnmarshalJSON(res, &proposal) return &proposal, height, nil } // NOTE: !errors.Is(err, types.ErrUnknownProposal) does not work here if err != nil && !strings.Contains(err.Error(), "proposal not found") { return nil, 0, err } res, height, err = cliCtx.QueryWithData(fmt.Sprintf("custom/%s/%s", queryRoute, types.QueryNextProposalID), nil) if err != nil { return nil, 0, err } var nextProposalID uint64 cdc.MustUnmarshalJSON(res, &nextProposalID) if proposalID >= nextProposalID { return nil, 0, sdkerrors.Wrapf(types.ErrUnknownProposal, "%d", proposalID) } events := []string{ fmt.Sprintf("%s.%s='%s'", sdk.EventTypeMessage, sdk.AttributeKeyAction, types.TypeMsgSubmitProposal), fmt.Sprintf("%s.%s='%s'", types.EventTypeProposalSubmit, types.AttributeKeyProposalID, []byte(fmt.Sprintf("%d", proposalID))), } searchResult, err := authtx.QueryTxsByEvents(cliCtx, events, defaultPage, defaultLimit, "") if err != nil { return nil, 0, err } for _, info := range searchResult.Txs { for _, msg := range info.GetTx().GetMsgs() { if subMsg, ok := msg.(*types.MsgSubmitProposal); ok { deadline, err := calculateDeadline(cliCtx, cdc, queryRoute, subMsg.CommitteeID, info.Height) if err != nil { return nil, 0, err } proposal, err := types.NewProposal(subMsg.GetPubProposal(), proposalID, subMsg.CommitteeID, deadline) if err != nil { return nil, 0, err } return &proposal, height, nil } } } return nil, 0, sdkerrors.Wrapf(types.ErrUnknownProposal, "%d", proposalID) } // calculateDeadline returns the proposal deadline for a committee and block height func calculateDeadline(cliCtx client.Context, cdc *codec.LegacyAmino, queryRoute string, committeeID uint64, blockHeight int64) (time.Time, error) { var deadline time.Time bz, err := cdc.MarshalJSON(types.NewQueryCommitteeParams(committeeID)) if err != nil { return deadline, err } res, _, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/%s", queryRoute, types.QueryCommittee), bz) if err != nil { return deadline, err } var committee types.Committee err = cdc.UnmarshalJSON(res, &committee) if err != nil { return deadline, err } node, err := cliCtx.GetNode() if err != nil { return deadline, err } resultBlock, err := node.Block(context.Background(), &blockHeight) if err != nil { return deadline, err } deadline = resultBlock.Block.Header.Time.Add(committee.GetProposalDuration()) return deadline, nil }