0g-chain/x/pricefeed/spec/06_end_block.md
2020-05-07 13:44:43 -04:00

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# End Block
At the end of each block, the current price is calculated as the median of all raw prices for each market. The logic is as follows:
```go
// EndBlocker updates the current pricefeed
func EndBlocker(ctx sdk.Context, k Keeper) {
// Update the current price of each asset.
for _, market := range k.GetMarkets(ctx) {
if market.Active {
err := k.SetCurrentPrices(ctx, market.MarketID)
if err != nil {
// In the event of failure, emit an event.
ctx.EventManager().EmitEvent(
sdk.NewEvent(
EventTypeNoValidPrices,
sdk.NewAttribute(AttributeMarketID, fmt.Sprintf("%s", market.MarketID)),
),
)
continue
}
}
}
return
}
```