package pricefeed import ( sdk "github.com/cosmos/cosmos-sdk/types" sdkerrors "github.com/cosmos/cosmos-sdk/types/errors" ) // NewHandler handles all pricefeed type messages func NewHandler(k Keeper) sdk.Handler { return func(ctx sdk.Context, msg sdk.Msg) (*sdk.Result, error) { ctx = ctx.WithEventManager(sdk.NewEventManager()) switch msg := msg.(type) { case MsgPostPrice: return HandleMsgPostPrice(ctx, k, msg) default: return nil, sdkerrors.Wrapf(sdkerrors.ErrUnknownRequest, "unrecognized %s message type: %T", ModuleName, msg) } } } // price feed questions: // do proposers need to post the round in the message? If not, how do we determine the round? // HandleMsgPostPrice handles prices posted by oracles func HandleMsgPostPrice( ctx sdk.Context, k Keeper, msg MsgPostPrice) (*sdk.Result, error) { _, err := k.GetOracle(ctx, msg.MarketID, msg.From) if err != nil { return nil, err } _, err = k.SetPrice(ctx, msg.From, msg.MarketID, msg.Price, msg.Expiry) if err != nil { return nil, err } ctx.EventManager().EmitEvent( sdk.NewEvent( sdk.EventTypeMessage, sdk.NewAttribute(sdk.AttributeKeyModule, AttributeValueCategory), sdk.NewAttribute(sdk.AttributeKeySender, msg.From.String()), ), ) return &sdk.Result{Events: ctx.EventManager().Events()}, nil }