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import {
BlockfrostPoolMetrics,
BlockfrostPoolMetricsModel,
Epoch,
EpochModel,
HashIdStakePoolMap,
OwnerAddressModel,
PoolAPY,
PoolAPYModel,
PoolData,
PoolDataModel,
PoolMetrics,
PoolMetricsModel,
PoolOwner,
PoolRegistration,
PoolRegistrationModel,
PoolRelay,
PoolRetirement,
PoolRetirementModel,
PoolUpdate,
PoolUpdateModel,
PoolsToCache,
RelayModel,
StakePoolResults,
StakePoolStatsModel
} from './types';
import { Cardano, StakePoolStats } from '@cardano-sdk/core';
import { Hash32ByteBase16 } from '@cardano-sdk/crypto';
import { Percent, bufferToHexString, isNotNil } from '@cardano-sdk/util';
import Fraction from 'fraction.js';
const getPoolStatus = (
lastPoolRegistration: PoolRegistration,
lastEpoch: number,
lastPoolRetirement?: PoolRetirement
): Cardano.StakePoolStatus => {
if (lastPoolRetirement === undefined || lastPoolRetirement.retiringEpoch <= lastPoolRegistration.activeEpochNo) {
if (lastPoolRegistration.activeEpochNo > lastEpoch) return Cardano.StakePoolStatus.Activating;
return Cardano.StakePoolStatus.Active;
}
if (lastPoolRetirement.retiringEpoch > lastEpoch) return Cardano.StakePoolStatus.Retiring;
return Cardano.StakePoolStatus.Retired;
};
interface ToCoreStakePoolInput {
poolOwners: PoolOwner[];
poolDatas: PoolData[];
poolRegistrations: PoolRegistration[];
poolRelays: PoolRelay[];
poolRetirements: PoolRetirement[];
lastEpochNo: Cardano.EpochNo;
poolMetrics: PoolMetrics[];
totalCount: number;
poolAPYs: PoolAPY[];
}
/**
* Calculates metrics that depends on Node's retrieved data.
* Since some metrics are obtained from the Node they have to be calculated outside db queries
*/
export const calcNodeMetricsValues = (metrics: PoolMetrics['metrics'], apy?: number): Cardano.StakePoolMetrics => {
const { activeStake, liveStake, activeStakePercentage, ...rest } = metrics;
const stakePoolMetrics = { ...rest, apy } as unknown as Cardano.StakePoolMetrics;
const isZeroStake = liveStake === 0n;
const size: Cardano.StakePoolMetricsSize = {
active: activeStakePercentage,
live: Percent(!isZeroStake ? 1 - activeStakePercentage : 0)
};
const stake: Cardano.StakePoolMetricsStake = {
active: activeStake,
live: liveStake
};
stakePoolMetrics.size = size;
stakePoolMetrics.stake = stake;
return stakePoolMetrics;
};
export const toStakePoolResults = (
poolHashIds: number[],
fromCache: HashIdStakePoolMap,
useBlockfrost: boolean,
{
poolOwners,
poolDatas,
poolRegistrations,
poolRelays,
poolRetirements,
lastEpochNo,
poolMetrics,
totalCount,
poolAPYs
}: ToCoreStakePoolInput
): StakePoolResults => {
const poolsToCache: PoolsToCache = {};
return {
poolsToCache,
results: {
pageResults: poolHashIds
// eslint-disable-next-line complexity
.map((hashId) => {
const poolData = poolDatas.find((data) => data.hashId === hashId);
Iif (!poolData) return;
// Get the cached value if given hash id persist in the in-memory cache
if (fromCache[hashId]) return fromCache[hashId];
const apy = poolAPYs.find((pool) => pool.hashId === hashId)?.apy;
const registration = poolRegistrations.find((r) => r.hashId === poolData.hashId);
const retirement = poolRetirements.find((r) => r.hashId === poolData.hashId);
const poolMetric = (poolMetrics as BlockfrostPoolMetrics[]).find(
(metric) => metric.hashId === poolData.hashId
);
const partialMetrics = poolMetric?.metrics;
let metrics: Cardano.StakePoolMetrics | undefined;
if (partialMetrics) {
metrics = calcNodeMetricsValues(partialMetrics, apy);
}
const coreStakePool: Cardano.StakePool = {
cost: poolData.cost,
hexId: poolData.hexId,
id: poolData.id,
margin: poolData.margin,
metrics: metrics ? metrics : ({} as Cardano.StakePoolMetrics),
pledge: poolData.pledge,
relays: poolRelays.filter((r) => r.updateId === poolData.updateId).map((r) => r.relay),
vrf: poolData.vrfKeyHash,
...(useBlockfrost
? {
owners: poolMetric?.owners || [],
rewardAccount: poolMetric?.rewardAccount || ('' as Cardano.RewardAccount),
status: poolMetric?.status || Cardano.StakePoolStatus.Retired
}
: {
owners: poolOwners.filter((o) => o.hashId === poolData.hashId).map((o) => o.address),
rewardAccount: poolData.rewardAccount,
status: getPoolStatus(registration!, lastEpochNo, retirement)
})
};
if (poolData.metadata) coreStakePool.metadata = poolData.metadata;
if (poolData.metadataJson) coreStakePool.metadataJson = poolData.metadataJson;
// Mark stake pool as pool to cache
poolsToCache[hashId] = coreStakePool;
return coreStakePool;
})
.filter(isNotNil),
totalResultCount: Number(totalCount)
}
};
};
export const mapPoolUpdate = (poolUpdateModel: PoolUpdateModel): PoolUpdate => ({
id: Number(poolUpdateModel.id),
updateId: Number(poolUpdateModel.update_id)
});
const metadataKeys = new Set([
'ticker',
'name',
'description',
'homepage',
'extended',
'extDataUrl',
'extSigUrl',
'extVkey'
]);
const isOfflineMetadata = (
_object: any
): _object is Cardano.StakePoolMainMetadataFields & Cardano.Cip6MetadataFields & Cardano.APMetadataFields =>
Object.keys(_object).every((k) => metadataKeys.has(k) && typeof _object[k] === 'string');
export const mapPoolData = (poolDataModel: PoolDataModel): PoolData => {
const vrfAsHexString = bufferToHexString(poolDataModel.vrf_key_hash);
const { n: numerator, d: denominator } = new Fraction(poolDataModel.margin);
const toReturn: PoolData = {
cost: BigInt(poolDataModel.fixed_cost),
hashId: Number(poolDataModel.hash_id),
hexId: bufferToHexString(poolDataModel.pool_hash) as unknown as Cardano.PoolIdHex,
id: poolDataModel.pool_id as unknown as Cardano.PoolId,
margin: { denominator, numerator },
pledge: BigInt(poolDataModel.pledge),
rewardAccount: poolDataModel.reward_address as unknown as Cardano.RewardAccount,
updateId: Number(poolDataModel.update_id),
vrfKeyHash: vrfAsHexString as unknown as Cardano.VrfVkHex
};
if (poolDataModel.metadata_hash) {
toReturn.metadataJson = {
hash: bufferToHexString(poolDataModel.metadata_hash) as unknown as Hash32ByteBase16,
url: poolDataModel.metadata_url
};
}
if (poolDataModel.offline_data) {
const parsedData = poolDataModel.offline_data;
if (isOfflineMetadata(parsedData)) toReturn.metadata = parsedData;
}
return toReturn;
};
export const mapRelay = (relayModel: RelayModel): PoolRelay => {
let relay: Cardano.Relay;
if (relayModel.hostname) {
relay = { __typename: 'RelayByName', hostname: relayModel.hostname, port: relayModel.port };
} else if (relayModel.dns_name) {
relay = {
__typename: 'RelayByNameMultihost',
dnsName: relayModel.dns_name
};
} else
relay = {
__typename: 'RelayByAddress',
ipv4: relayModel.ipv4,
ipv6: relayModel.ipv6,
port: relayModel.port
};
return { hashId: Number(relayModel.hash_id), relay, updateId: Number(relayModel.update_id) };
};
export const mapEpoch = ({ no, optimal_pool_count }: EpochModel): Epoch => ({
no,
optimalPoolCount: optimal_pool_count
});
export const mapAddressOwner = (ownerAddressModel: OwnerAddressModel): PoolOwner => ({
address: ownerAddressModel.address as unknown as Cardano.RewardAccount,
hashId: Number(ownerAddressModel.hash_id)
});
export const mapPoolRegistration = (poolRegistrationModel: PoolRegistrationModel): PoolRegistration => ({
activeEpochNo: poolRegistrationModel.active_epoch_no,
hashId: Number(poolRegistrationModel.hash_id),
transactionId: bufferToHexString(poolRegistrationModel.tx_hash) as unknown as Cardano.TransactionId
});
export const mapPoolRetirement = (poolRetirementModel: PoolRetirementModel): PoolRetirement => ({
hashId: Number(poolRetirementModel.hash_id),
retiringEpoch: poolRetirementModel.retiring_epoch,
transactionId: bufferToHexString(poolRetirementModel.tx_hash) as unknown as Cardano.TransactionId
});
export const mapPoolMetrics = (poolMetricsModel: PoolMetricsModel): PoolMetrics => ({
hashId: Number(poolMetricsModel.pool_hash_id),
metrics: {
activeStake: BigInt(poolMetricsModel.active_stake),
activeStakePercentage: Percent(Number(poolMetricsModel.active_stake_percentage)),
blocksCreated: poolMetricsModel.blocks_created,
delegators: poolMetricsModel.delegators,
lastRos: Percent(0),
livePledge: BigInt(poolMetricsModel.live_pledge),
liveStake: BigInt(poolMetricsModel.live_stake),
ros: Percent(0),
saturation: Percent(Number.parseFloat(poolMetricsModel.saturation))
}
});
export const mapBlockfrostPoolMetrics = (poolMetricsModel: BlockfrostPoolMetricsModel): BlockfrostPoolMetrics => {
const { extra, reward_address, status } = poolMetricsModel;
const [owners, registration, retirement] = JSON.parse(extra);
return {
...mapPoolMetrics(poolMetricsModel),
owners,
registration,
retirement,
rewardAccount: reward_address as unknown as Cardano.RewardAccount,
status: status as unknown as Cardano.StakePoolStatus
};
};
export const mapPoolStats = (poolStats: StakePoolStatsModel): StakePoolStats => ({
qty: {
// There is no need of resolving this for db-sync provider, will be deprecated soon with the optimized postgres one
activating: 0,
active: Number(poolStats.active),
retired: Number(poolStats.retired),
retiring: Number(poolStats.retiring)
}
});
export const mapPoolAPY = (poolAPYModel: PoolAPYModel): PoolAPY => ({
apy: poolAPYModel.apy,
hashId: Number(poolAPYModel.hash_id)
});
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