0g-chain/x/pricefeed/keeper/keeper.go

230 lines
7.0 KiB
Go
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package keeper
import (
"fmt"
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"sort"
"time"
Update cosmos-sdk to v0.47.7 (#1811) * Update cometbft, cosmos, ethermint, and ibc-go * Replace github.com/tendermint/tendermint by github.com/cometbft/cometbft * Replace github.com/tendermint/tm-db by github.com/cometbft/cometbft-db * Replace gogo/protobuf with cosmos/gogoproto & simapp replacement * Replace cosmos-sdk/simapp/helpers with cosmos-sdk/testutil/sims * Remove no longer used simulations * Replace ibchost with ibcexported See https://github.com/cosmos/ibc-go/blob/v7.2.2/docs/migrations/v6-to-v7.md#ibc-module-constants * Add new consensus params keeper * Add consensus keeper to blockers * Fix keeper and module issues in app.go * Add IsSendEnabledCoins and update SetParams interface changes * Fix protobuf build for cosmos 47 (#1800) * fix cp errors by using -f; fix lint by only linting our proto dir; and use proofs.proto directly from ics23 for ibc-go v7 * run proto-all; commit updated third party deps and swagger changes * regenerate proto files * use correct gocosmos build plugin for buf * re-gen all protobuf files to update paths for new gocosmos plugin * update protoc and buf to latest versions * fix staking keeper issues in app.go * update tally handler for gov changes * chain id fix and flag fixes * update deps for cometbft 47.7 upgrade * remove all module legacy queriers * update stakingKeeper to pointer * Replace ModuleCdc from govv1beta1 to govcodec * remove simulations * abci.LastCommitInfo → abci.CommitInfo * Remove unused code in keys.go * simapp.MakeTestEncodingConfig -> moduletestutil.MakeTestEncodingConfi * Fix chain id issues in tests * Fix remaining unit test issues * Update changelog for upgrade * Fix e2e tests using updated kvtool * Update protonet to v47 compatible genesis * Bump cometbft-db to v0.9.1-kava.1 * Update kvtool * Remove extra changelog * Fix merged rocksdb issues * go mod cleanup * Bump cometbft-db to v9 and go to 1.21 * Bump rocksdb version to v8.10.0 * Update kvtool to latest version * Update gin to v1.9.0 * Use ibctm.ModuleName in app_test * Fallback to genesis chain id instead of client toml * Remove all simulations * Fix cdp migrations issue with v47 * Update dependencies to correct tags --------- Co-authored-by: Nick DeLuca <nickdeluca08@gmail.com>
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"github.com/cometbft/cometbft/libs/log"
errorsmod "cosmossdk.io/errors"
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"github.com/cosmos/cosmos-sdk/codec"
feat: upgrade to Cosmos v0.46 (#1477) * Update cosmos-sdk to v0.45.10-kava * Add RegisterNodeService to app * Update cosmos proto files * Update cosmos proto files * Use tagged v0.45.10-kava-v0.19-0.21 cosmos version * update x/auth/legacy to x/auth/migrations * Delete rest packages and registration * Remove rest from proposal handlers * Remove legacy types referencing removed sdk types * Remove legacy tx broadcast handler * Update incentive staking hooks to return error * Remove grpc replace directive, use new grpc version * Fix storetypes import * Update tally_handler with updated gov types * Delete legacy types * Use new gov default config * Update RegisterTendermintService params Signed-off-by: drklee3 <derrick@dlee.dev> * Replace sdk.StoreKey with storetypes.StoreKey * Replace sdk.Int#ToDec with sdk.NewDecFromInt * Replace sdk.NewUintFromBigInt with sdkmath.NewUintFromBigInt Signed-off-by: drklee3 <derrick@dlee.dev> * Update most intances of govtypes to govv1beta1 * Unpack coin slice for Coins#Sub and Coins#SafeSub Signed-off-by: drklee3 <derrick@dlee.dev> * Update committee gov codec registration Signed-off-by: drklee3 <derrick@dlee.dev> * Update migrate utils period_vesting Coins#Sub Signed-off-by: drklee3 <derrick@dlee.dev> * Update Coin#Sub in community proposal handler Signed-off-by: drklee3 <derrick@dlee.dev> * Update Coin#Sub, FundModuleAccount/FundAccount in banktestutil Signed-off-by: drklee3 <derrick@dlee.dev> * Update community, earn, kavadist proposal gov registration * Update evm cli client EthSecp256k1Type check * AccAddressFromHex to AccAddressFromHexUnsafe * Add mint DefaultInflationCalculationFn to earn test * Update use of removed staking.NewHandler * Rename FlagIAVLFastNode -> FlagDisableIAVLFastNode * cmd: Update new snapshot app option Signed-off-by: drklee3 <derrick@dlee.dev> * cmd: Add tendermint default config, use cosmos rpc status command Signed-off-by: drklee3 <derrick@dlee.dev> * Update ethermint import path github.com/tharsis/ethermint -> github.com/evmos/ethermint * Upgrade ibc-go to v6 * Update proto dependencies Signed-off-by: drklee3 <derrick@dlee.dev> * Update Tally handler test with new gov types * Update helpers.GenTx -> helpers.GenSignedMockTx * Update evmkeeper.NewKeeper params Signed-off-by: drklee3 <derrick@dlee.dev> * Update ante authz, tests * Add feemarket transient key, pass subspaces to evm/feemarket keepers * Update new ante decorators * Add new addModuleInitFlags to server commands * Pass codec to keyring.New in genaccounts * Pass codec to client keys add * Add SendCoins to evmutil bank_keeper * Use github.com/cosmos/iavl@v0.19.5 * Add ante HandlerOptions * Add unimplemented SendCoins to evmutil bank keeper Ethermint x/evm does not use this method * Update init-new-chain script to disable post-london blocks * Modify test genesis states to append 1 validator * Update tally handler test to use string values * Prevent querying balance for empty sdk.AccAddress in auction bidding test * Set default bond denom to ukava * Remove overwritten bank genesis total supply in committee proposal test Signed-off-by: drklee3 <derrick@dlee.dev> * Use ukava for testing staked balance * Disable minting in community proposal handler test Previously stake denom is used, which resulted in 0 minted coins * Update hard APYToSPY test expected value Increased iterations in sdk.ApproxRoot, updated closer to real value * Fix NewDecCoinsFromCoins bug in incentive collectDerivativeStakingRewards * Allow bkava earn incentive test values to match within small margin for rounding Signed-off-by: drklee3 <derrick@dlee.dev> * Update invalid denom in issuance message coin validation Colons are now valid in denoms Signed-off-by: drklee3 <derrick@dlee.dev> * Remove genesis validator in incentive delegation tests * Update pricefeed market test for invalid denom Signed-off-by: drklee3 <derrick@dlee.dev> * Update incentive delegator rewards test without genesis validator Signed-off-by: drklee3 <derrick@dlee.dev> * Add validator to export test * Clear bank state in minting tests Signed-off-by: drklee3 <derrick@dlee.dev> * Remove validator for no stake tally test Signed-off-by: drklee3 <derrick@dlee.dev> * Clear incentive state before InitGenesis in incentive genesis export test * Update swagger Signed-off-by: drklee3 <derrick@dlee.dev> * Update ethermint version to match replaced version * Remove legacy swagger * Add NewEthEmitEventDecorator * Remove redundant func for AddModuleInitFlags * Remove unused addBankBalanceForAddress func * Add SetIAVLLazyLoading option to app cmd * Use legacy.RegisterAminoMsg for committee msg concrete registration * Remove unnecessary Amino field * Add evm_util bankkeeper SendCoins comment * Update test method ResetBankState to DeleteGenesisValidatorCoins to be more clear * Validate incentive params.RewardsPerSecond to be non-zero * Validate swap pools to disallow colons in token denoms * Register all legacy amino types on gov modulecdc * Remove redundant Comittee interface registration * Pin goleveldb to v1.0.1-0.20210819022825-2ae1ddf74ef7 Causes failed to load state at height errors * Update ethermint to new pinned version with minGasPrices parse error fix * Update cosmos fork dependcy commit to include reverted account constructor patch * Update Cosmos v0.46.11 and cometbft v0.34.27 * Bump minimum go version to 1.19 * Update tendermint proto * Update internal testnet genesis * Move NewCanTransferDecorator before NewEthGasConsumeDecorator * Add hard borrow store tests (#1514) * add store tests for Borrow type * refactor Deposit tests to match * Fix old bep3 tests (#1515) * Update Ethermint to 1b17445 to fix duplicate proto registration * Add custom status command to use snake_case and stdout * Add SetInflation helper * Reduce ambiguity with evm CanSignEthTx error * Remove init genesis validator claim in test * Add disabled evmante.NewMinGasPriceDecorator with x/feemarket note * chore: use tagged versions for Cosmos and Ethermint forks * update kvtool & increase wait for ibc transfer test --------- Signed-off-by: drklee3 <derrick@dlee.dev> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: Robert Pirtle <astropirtle@gmail.com>
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storetypes "github.com/cosmos/cosmos-sdk/store/types"
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sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
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"github.com/0glabs/0g-chain/x/pricefeed/types"
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)
// Keeper struct for pricefeed module
type Keeper struct {
// key used to access the stores from Context
feat: upgrade to Cosmos v0.46 (#1477) * Update cosmos-sdk to v0.45.10-kava * Add RegisterNodeService to app * Update cosmos proto files * Update cosmos proto files * Use tagged v0.45.10-kava-v0.19-0.21 cosmos version * update x/auth/legacy to x/auth/migrations * Delete rest packages and registration * Remove rest from proposal handlers * Remove legacy types referencing removed sdk types * Remove legacy tx broadcast handler * Update incentive staking hooks to return error * Remove grpc replace directive, use new grpc version * Fix storetypes import * Update tally_handler with updated gov types * Delete legacy types * Use new gov default config * Update RegisterTendermintService params Signed-off-by: drklee3 <derrick@dlee.dev> * Replace sdk.StoreKey with storetypes.StoreKey * Replace sdk.Int#ToDec with sdk.NewDecFromInt * Replace sdk.NewUintFromBigInt with sdkmath.NewUintFromBigInt Signed-off-by: drklee3 <derrick@dlee.dev> * Update most intances of govtypes to govv1beta1 * Unpack coin slice for Coins#Sub and Coins#SafeSub Signed-off-by: drklee3 <derrick@dlee.dev> * Update committee gov codec registration Signed-off-by: drklee3 <derrick@dlee.dev> * Update migrate utils period_vesting Coins#Sub Signed-off-by: drklee3 <derrick@dlee.dev> * Update Coin#Sub in community proposal handler Signed-off-by: drklee3 <derrick@dlee.dev> * Update Coin#Sub, FundModuleAccount/FundAccount in banktestutil Signed-off-by: drklee3 <derrick@dlee.dev> * Update community, earn, kavadist proposal gov registration * Update evm cli client EthSecp256k1Type check * AccAddressFromHex to AccAddressFromHexUnsafe * Add mint DefaultInflationCalculationFn to earn test * Update use of removed staking.NewHandler * Rename FlagIAVLFastNode -> FlagDisableIAVLFastNode * cmd: Update new snapshot app option Signed-off-by: drklee3 <derrick@dlee.dev> * cmd: Add tendermint default config, use cosmos rpc status command Signed-off-by: drklee3 <derrick@dlee.dev> * Update ethermint import path github.com/tharsis/ethermint -> github.com/evmos/ethermint * Upgrade ibc-go to v6 * Update proto dependencies Signed-off-by: drklee3 <derrick@dlee.dev> * Update Tally handler test with new gov types * Update helpers.GenTx -> helpers.GenSignedMockTx * Update evmkeeper.NewKeeper params Signed-off-by: drklee3 <derrick@dlee.dev> * Update ante authz, tests * Add feemarket transient key, pass subspaces to evm/feemarket keepers * Update new ante decorators * Add new addModuleInitFlags to server commands * Pass codec to keyring.New in genaccounts * Pass codec to client keys add * Add SendCoins to evmutil bank_keeper * Use github.com/cosmos/iavl@v0.19.5 * Add ante HandlerOptions * Add unimplemented SendCoins to evmutil bank keeper Ethermint x/evm does not use this method * Update init-new-chain script to disable post-london blocks * Modify test genesis states to append 1 validator * Update tally handler test to use string values * Prevent querying balance for empty sdk.AccAddress in auction bidding test * Set default bond denom to ukava * Remove overwritten bank genesis total supply in committee proposal test Signed-off-by: drklee3 <derrick@dlee.dev> * Use ukava for testing staked balance * Disable minting in community proposal handler test Previously stake denom is used, which resulted in 0 minted coins * Update hard APYToSPY test expected value Increased iterations in sdk.ApproxRoot, updated closer to real value * Fix NewDecCoinsFromCoins bug in incentive collectDerivativeStakingRewards * Allow bkava earn incentive test values to match within small margin for rounding Signed-off-by: drklee3 <derrick@dlee.dev> * Update invalid denom in issuance message coin validation Colons are now valid in denoms Signed-off-by: drklee3 <derrick@dlee.dev> * Remove genesis validator in incentive delegation tests * Update pricefeed market test for invalid denom Signed-off-by: drklee3 <derrick@dlee.dev> * Update incentive delegator rewards test without genesis validator Signed-off-by: drklee3 <derrick@dlee.dev> * Add validator to export test * Clear bank state in minting tests Signed-off-by: drklee3 <derrick@dlee.dev> * Remove validator for no stake tally test Signed-off-by: drklee3 <derrick@dlee.dev> * Clear incentive state before InitGenesis in incentive genesis export test * Update swagger Signed-off-by: drklee3 <derrick@dlee.dev> * Update ethermint version to match replaced version * Remove legacy swagger * Add NewEthEmitEventDecorator * Remove redundant func for AddModuleInitFlags * Remove unused addBankBalanceForAddress func * Add SetIAVLLazyLoading option to app cmd * Use legacy.RegisterAminoMsg for committee msg concrete registration * Remove unnecessary Amino field * Add evm_util bankkeeper SendCoins comment * Update test method ResetBankState to DeleteGenesisValidatorCoins to be more clear * Validate incentive params.RewardsPerSecond to be non-zero * Validate swap pools to disallow colons in token denoms * Register all legacy amino types on gov modulecdc * Remove redundant Comittee interface registration * Pin goleveldb to v1.0.1-0.20210819022825-2ae1ddf74ef7 Causes failed to load state at height errors * Update ethermint to new pinned version with minGasPrices parse error fix * Update cosmos fork dependcy commit to include reverted account constructor patch * Update Cosmos v0.46.11 and cometbft v0.34.27 * Bump minimum go version to 1.19 * Update tendermint proto * Update internal testnet genesis * Move NewCanTransferDecorator before NewEthGasConsumeDecorator * Add hard borrow store tests (#1514) * add store tests for Borrow type * refactor Deposit tests to match * Fix old bep3 tests (#1515) * Update Ethermint to 1b17445 to fix duplicate proto registration * Add custom status command to use snake_case and stdout * Add SetInflation helper * Reduce ambiguity with evm CanSignEthTx error * Remove init genesis validator claim in test * Add disabled evmante.NewMinGasPriceDecorator with x/feemarket note * chore: use tagged versions for Cosmos and Ethermint forks * update kvtool & increase wait for ibc transfer test --------- Signed-off-by: drklee3 <derrick@dlee.dev> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: Robert Pirtle <astropirtle@gmail.com>
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key storetypes.StoreKey
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// Codec for binary encoding/decoding
cdc codec.Codec
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// The reference to the Paramstore to get and set pricefeed specific params
paramSubspace paramtypes.Subspace
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}
// NewKeeper returns a new keeper for the pricefeed module.
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func NewKeeper(
feat: upgrade to Cosmos v0.46 (#1477) * Update cosmos-sdk to v0.45.10-kava * Add RegisterNodeService to app * Update cosmos proto files * Update cosmos proto files * Use tagged v0.45.10-kava-v0.19-0.21 cosmos version * update x/auth/legacy to x/auth/migrations * Delete rest packages and registration * Remove rest from proposal handlers * Remove legacy types referencing removed sdk types * Remove legacy tx broadcast handler * Update incentive staking hooks to return error * Remove grpc replace directive, use new grpc version * Fix storetypes import * Update tally_handler with updated gov types * Delete legacy types * Use new gov default config * Update RegisterTendermintService params Signed-off-by: drklee3 <derrick@dlee.dev> * Replace sdk.StoreKey with storetypes.StoreKey * Replace sdk.Int#ToDec with sdk.NewDecFromInt * Replace sdk.NewUintFromBigInt with sdkmath.NewUintFromBigInt Signed-off-by: drklee3 <derrick@dlee.dev> * Update most intances of govtypes to govv1beta1 * Unpack coin slice for Coins#Sub and Coins#SafeSub Signed-off-by: drklee3 <derrick@dlee.dev> * Update committee gov codec registration Signed-off-by: drklee3 <derrick@dlee.dev> * Update migrate utils period_vesting Coins#Sub Signed-off-by: drklee3 <derrick@dlee.dev> * Update Coin#Sub in community proposal handler Signed-off-by: drklee3 <derrick@dlee.dev> * Update Coin#Sub, FundModuleAccount/FundAccount in banktestutil Signed-off-by: drklee3 <derrick@dlee.dev> * Update community, earn, kavadist proposal gov registration * Update evm cli client EthSecp256k1Type check * AccAddressFromHex to AccAddressFromHexUnsafe * Add mint DefaultInflationCalculationFn to earn test * Update use of removed staking.NewHandler * Rename FlagIAVLFastNode -> FlagDisableIAVLFastNode * cmd: Update new snapshot app option Signed-off-by: drklee3 <derrick@dlee.dev> * cmd: Add tendermint default config, use cosmos rpc status command Signed-off-by: drklee3 <derrick@dlee.dev> * Update ethermint import path github.com/tharsis/ethermint -> github.com/evmos/ethermint * Upgrade ibc-go to v6 * Update proto dependencies Signed-off-by: drklee3 <derrick@dlee.dev> * Update Tally handler test with new gov types * Update helpers.GenTx -> helpers.GenSignedMockTx * Update evmkeeper.NewKeeper params Signed-off-by: drklee3 <derrick@dlee.dev> * Update ante authz, tests * Add feemarket transient key, pass subspaces to evm/feemarket keepers * Update new ante decorators * Add new addModuleInitFlags to server commands * Pass codec to keyring.New in genaccounts * Pass codec to client keys add * Add SendCoins to evmutil bank_keeper * Use github.com/cosmos/iavl@v0.19.5 * Add ante HandlerOptions * Add unimplemented SendCoins to evmutil bank keeper Ethermint x/evm does not use this method * Update init-new-chain script to disable post-london blocks * Modify test genesis states to append 1 validator * Update tally handler test to use string values * Prevent querying balance for empty sdk.AccAddress in auction bidding test * Set default bond denom to ukava * Remove overwritten bank genesis total supply in committee proposal test Signed-off-by: drklee3 <derrick@dlee.dev> * Use ukava for testing staked balance * Disable minting in community proposal handler test Previously stake denom is used, which resulted in 0 minted coins * Update hard APYToSPY test expected value Increased iterations in sdk.ApproxRoot, updated closer to real value * Fix NewDecCoinsFromCoins bug in incentive collectDerivativeStakingRewards * Allow bkava earn incentive test values to match within small margin for rounding Signed-off-by: drklee3 <derrick@dlee.dev> * Update invalid denom in issuance message coin validation Colons are now valid in denoms Signed-off-by: drklee3 <derrick@dlee.dev> * Remove genesis validator in incentive delegation tests * Update pricefeed market test for invalid denom Signed-off-by: drklee3 <derrick@dlee.dev> * Update incentive delegator rewards test without genesis validator Signed-off-by: drklee3 <derrick@dlee.dev> * Add validator to export test * Clear bank state in minting tests Signed-off-by: drklee3 <derrick@dlee.dev> * Remove validator for no stake tally test Signed-off-by: drklee3 <derrick@dlee.dev> * Clear incentive state before InitGenesis in incentive genesis export test * Update swagger Signed-off-by: drklee3 <derrick@dlee.dev> * Update ethermint version to match replaced version * Remove legacy swagger * Add NewEthEmitEventDecorator * Remove redundant func for AddModuleInitFlags * Remove unused addBankBalanceForAddress func * Add SetIAVLLazyLoading option to app cmd * Use legacy.RegisterAminoMsg for committee msg concrete registration * Remove unnecessary Amino field * Add evm_util bankkeeper SendCoins comment * Update test method ResetBankState to DeleteGenesisValidatorCoins to be more clear * Validate incentive params.RewardsPerSecond to be non-zero * Validate swap pools to disallow colons in token denoms * Register all legacy amino types on gov modulecdc * Remove redundant Comittee interface registration * Pin goleveldb to v1.0.1-0.20210819022825-2ae1ddf74ef7 Causes failed to load state at height errors * Update ethermint to new pinned version with minGasPrices parse error fix * Update cosmos fork dependcy commit to include reverted account constructor patch * Update Cosmos v0.46.11 and cometbft v0.34.27 * Bump minimum go version to 1.19 * Update tendermint proto * Update internal testnet genesis * Move NewCanTransferDecorator before NewEthGasConsumeDecorator * Add hard borrow store tests (#1514) * add store tests for Borrow type * refactor Deposit tests to match * Fix old bep3 tests (#1515) * Update Ethermint to 1b17445 to fix duplicate proto registration * Add custom status command to use snake_case and stdout * Add SetInflation helper * Reduce ambiguity with evm CanSignEthTx error * Remove init genesis validator claim in test * Add disabled evmante.NewMinGasPriceDecorator with x/feemarket note * chore: use tagged versions for Cosmos and Ethermint forks * update kvtool & increase wait for ibc transfer test --------- Signed-off-by: drklee3 <derrick@dlee.dev> Co-authored-by: Ruaridh <rhuairahrighairidh@users.noreply.github.com> Co-authored-by: Robert Pirtle <astropirtle@gmail.com>
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cdc codec.Codec, key storetypes.StoreKey, paramstore paramtypes.Subspace,
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) Keeper {
if !paramstore.HasKeyTable() {
paramstore = paramstore.WithKeyTable(types.ParamKeyTable())
}
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return Keeper{
cdc: cdc,
key: key,
paramSubspace: paramstore,
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}
}
// Logger returns a module-specific logger.
func (k Keeper) Logger(ctx sdk.Context) log.Logger {
return ctx.Logger().With("module", fmt.Sprintf("x/%s", types.ModuleName))
}
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// SetPrice updates the posted price for a specific oracle
func (k Keeper) SetPrice(
ctx sdk.Context,
oracle sdk.AccAddress,
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marketID string,
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price sdk.Dec,
expiry time.Time,
) (types.PostedPrice, error) {
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// If the expiry is less than or equal to the current blockheight, we consider the price valid
if !expiry.After(ctx.BlockTime()) {
return types.PostedPrice{}, types.ErrExpired
}
store := ctx.KVStore(k.key)
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newRawPrice := types.NewPostedPrice(marketID, oracle, price, expiry)
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// Emit an event containing the oracle's new price
ctx.EventManager().EmitEvent(
sdk.NewEvent(
types.EventTypeOracleUpdatedPrice,
sdk.NewAttribute(types.AttributeMarketID, marketID),
sdk.NewAttribute(types.AttributeOracle, oracle.String()),
sdk.NewAttribute(types.AttributeMarketPrice, price.String()),
sdk.NewAttribute(types.AttributeExpiry, expiry.UTC().String()),
),
)
// Sets the raw price for a single oracle instead of an array of all oracle's raw prices
store.Set(types.RawPriceKey(marketID, oracle), k.cdc.MustMarshal(&newRawPrice))
return newRawPrice, nil
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}
// SetCurrentPrices updates the price of an asset to the median of all valid oracle inputs
func (k Keeper) SetCurrentPrices(ctx sdk.Context, marketID string) error {
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_, ok := k.GetMarket(ctx, marketID)
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if !ok {
return errorsmod.Wrap(types.ErrInvalidMarket, marketID)
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}
// store current price
validPrevPrice := true
prevPrice, err := k.GetCurrentPrice(ctx, marketID)
if err != nil {
validPrevPrice = false
}
prices := k.GetRawPrices(ctx, marketID)
var notExpiredPrices []types.CurrentPrice
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// filter out expired prices
for _, v := range prices {
if v.Expiry.After(ctx.BlockTime()) {
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notExpiredPrices = append(notExpiredPrices, types.NewCurrentPrice(v.MarketID, v.Price))
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}
}
if len(notExpiredPrices) == 0 {
// NOTE: The current price stored will continue storing the most recent (expired)
// price if this is not set.
// This zero's out the current price stored value for that market and ensures
// that CDP methods that GetCurrentPrice will return error.
k.setCurrentPrice(ctx, marketID, types.CurrentPrice{})
return types.ErrNoValidPrice
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}
medianPrice := k.CalculateMedianPrice(notExpiredPrices)
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// check case that market price was not set in genesis
if validPrevPrice && !medianPrice.Equal(prevPrice.Price) {
// only emit event if price has changed
ctx.EventManager().EmitEvent(
sdk.NewEvent(
types.EventTypeMarketPriceUpdated,
sdk.NewAttribute(types.AttributeMarketID, marketID),
sdk.NewAttribute(types.AttributeMarketPrice, medianPrice.String()),
),
)
}
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currentPrice := types.NewCurrentPrice(marketID, medianPrice)
k.setCurrentPrice(ctx, marketID, currentPrice)
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return nil
}
func (k Keeper) setCurrentPrice(ctx sdk.Context, marketID string, currentPrice types.CurrentPrice) {
store := ctx.KVStore(k.key)
store.Set(types.CurrentPriceKey(marketID), k.cdc.MustMarshal(&currentPrice))
}
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// CalculateMedianPrice calculates the median prices for the input prices.
func (k Keeper) CalculateMedianPrice(prices []types.CurrentPrice) sdk.Dec {
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l := len(prices)
if l == 1 {
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// Return immediately if there's only one price
return prices[0].Price
}
// sort the prices
sort.Slice(prices, func(i, j int) bool {
return prices[i].Price.LT(prices[j].Price)
})
// for even numbers of prices, the median is calculated as the mean of the two middle prices
if l%2 == 0 {
median := k.calculateMeanPrice(prices[l/2-1], prices[l/2])
return median
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}
// for odd numbers of prices, return the middle element
return prices[l/2].Price
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}
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func (k Keeper) calculateMeanPrice(priceA, priceB types.CurrentPrice) sdk.Dec {
sum := priceA.Price.Add(priceB.Price)
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mean := sum.Quo(sdk.NewDec(2))
return mean
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}
// GetCurrentPrice fetches the current median price of all oracles for a specific market
func (k Keeper) GetCurrentPrice(ctx sdk.Context, marketID string) (types.CurrentPrice, error) {
store := ctx.KVStore(k.key)
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bz := store.Get(types.CurrentPriceKey(marketID))
if bz == nil {
return types.CurrentPrice{}, types.ErrNoValidPrice
}
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var price types.CurrentPrice
err := k.cdc.Unmarshal(bz, &price)
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if err != nil {
return types.CurrentPrice{}, err
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}
if price.Price.Equal(sdk.ZeroDec()) {
return types.CurrentPrice{}, types.ErrNoValidPrice
}
return price, nil
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}
// IterateCurrentPrices iterates over all current price objects in the store and performs a callback function
func (k Keeper) IterateCurrentPrices(ctx sdk.Context, cb func(cp types.CurrentPrice) (stop bool)) {
iterator := sdk.KVStorePrefixIterator(ctx.KVStore(k.key), types.CurrentPricePrefix)
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var cp types.CurrentPrice
k.cdc.MustUnmarshal(iterator.Value(), &cp)
if cb(cp) {
break
}
}
}
// GetCurrentPrices returns all current price objects from the store
func (k Keeper) GetCurrentPrices(ctx sdk.Context) types.CurrentPrices {
var cps types.CurrentPrices
k.IterateCurrentPrices(ctx, func(cp types.CurrentPrice) (stop bool) {
cps = append(cps, cp)
return false
})
return cps
}
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// GetRawPrices fetches the set of all prices posted by oracles for an asset
func (k Keeper) GetRawPrices(ctx sdk.Context, marketId string) types.PostedPrices {
var pps types.PostedPrices
k.IterateRawPricesByMarket(ctx, marketId, func(pp types.PostedPrice) (stop bool) {
pps = append(pps, pp)
return false
})
return pps
}
// IterateRawPrices iterates over all raw prices in the store and performs a callback function
func (k Keeper) IterateRawPricesByMarket(ctx sdk.Context, marketId string, cb func(record types.PostedPrice) (stop bool)) {
iterator := sdk.KVStorePrefixIterator(ctx.KVStore(k.key), types.RawPriceIteratorKey((marketId)))
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var record types.PostedPrice
k.cdc.MustUnmarshal(iterator.Value(), &record)
if cb(record) {
break
}
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}
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}