Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 | 17x 17x 17x 17x 17x 17x 17x | import { Cardano, DRepProvider, RewardAccountInfoProvider, Serialization, StakePoolProvider } from '@cardano-sdk/core';
import { BlockfrostClient, BlockfrostProvider, fetchSequentially, isBlockfrostNotFoundError } from '../blockfrost';
import { HexBlob, isNotNil } from '@cardano-sdk/util';
import { Logger } from 'ts-log';
import uniq from 'lodash/uniq.js';
import type { Responses } from '@blockfrost/blockfrost-js';
export type BlockfrostRewardAccountInfoProviderDependencies = {
client: BlockfrostClient;
logger: Logger;
stakePoolProvider: StakePoolProvider;
dRepProvider: DRepProvider;
};
const emptyArrayIfNotFound = (error: unknown) => {
Iif (isBlockfrostNotFoundError(error)) {
return [];
}
throw error;
};
export class BlockfrostRewardAccountInfoProvider extends BlockfrostProvider implements RewardAccountInfoProvider {
#dRepProvider: DRepProvider;
#stakePoolProvider: StakePoolProvider;
constructor({ client, logger, stakePoolProvider, dRepProvider }: BlockfrostRewardAccountInfoProviderDependencies) {
super(client, logger);
this.#dRepProvider = dRepProvider;
this.#stakePoolProvider = stakePoolProvider;
}
async rewardAccountInfo(
address: Cardano.RewardAccount,
localEpoch: Cardano.EpochNo
): Promise<Cardano.RewardAccountInfo> {
const [account, [lastRegistrationActivity]] = await Promise.all([
await this.request<Responses['account_content']>(`accounts/${address}`).catch(
(error): Responses['account_content'] => {
Iif (isBlockfrostNotFoundError(error)) {
return {
active: false,
active_epoch: null,
controlled_amount: '0',
drep_id: null,
pool_id: null,
reserves_sum: '0',
rewards_sum: '0',
stake_address: address,
treasury_sum: '0',
withdrawable_amount: '0',
withdrawals_sum: '0'
};
}
throw error;
}
),
this.request<Responses['account_registration_content']>(
`accounts/${address}/registrations?order=desc&count=1`
).catch(emptyArrayIfNotFound)
]);
const isUnregisteringAtEpoch = await this.#getUnregisteringAtEpoch(lastRegistrationActivity);
const credentialStatus = account.active
? Cardano.StakeCredentialStatus.Registered
: lastRegistrationActivity?.action === 'registered'
? Cardano.StakeCredentialStatus.Registering
: typeof isUnregisteringAtEpoch === 'undefined' || isUnregisteringAtEpoch <= localEpoch
? Cardano.StakeCredentialStatus.Unregistered
: Cardano.StakeCredentialStatus.Unregistering;
const rewardBalance = BigInt(account.withdrawable_amount || '0');
const [delegatee, dRepDelegatee, deposit] = await Promise.all([
this.#getDelegatee(address, localEpoch, isUnregisteringAtEpoch),
this.#getDrepDelegatee(account),
// This provider currently does not find other deposits (pool/drep/govaction)
this.#getKeyDeposit(lastRegistrationActivity)
]);
return {
address,
credentialStatus,
dRepDelegatee,
delegatee,
deposit,
rewardBalance
};
}
async delegationPortfolio(rewardAccount: Cardano.RewardAccount): Promise<Cardano.Cip17DelegationPortfolio | null> {
const portfolios = await fetchSequentially({
haveEnoughItems: (items: Array<null | Cardano.Cip17DelegationPortfolio>) => items.some(isNotNil),
paginationOptions: { order: 'desc' },
request: async (paginationQueryString) => {
const txs = await this.request<Responses['account_delegation_content']>(
`accounts/${rewardAccount}/delegations?${paginationQueryString}`
).catch(emptyArrayIfNotFound);
const result: Array<null | Cardano.Cip17DelegationPortfolio> = [];
for (const { tx_hash } of txs) {
const metadata = await this.request<Responses['tx_content_metadata_cbor']>(
`txs/${tx_hash}/metadata/cbor`
).catch(emptyArrayIfNotFound);
const cbor = metadata.find(({ label }) => label === '6862')?.metadata;
Iif (!cbor) {
result.push(null);
continue;
}
const metadatum = Serialization.TransactionMetadatum.fromCbor(HexBlob(cbor));
try {
result.push(Cardano.cip17FromMetadatum(metadatum.toCore()));
break;
} catch {
result.push(null);
}
}
return result;
}
});
return portfolios.find(isNotNil) || null;
}
async #getUnregisteringAtEpoch(
lastRegistrationActivity: Responses['account_registration_content'][0] | undefined
): Promise<Cardano.EpochNo | undefined> {
Iif (!lastRegistrationActivity || lastRegistrationActivity.action === 'registered') {
return;
}
const tx = await this.request<Responses['tx_content']>(`txs/${lastRegistrationActivity.tx_hash}`);
const block = await this.request<Responses['block_content']>(`blocks/${tx.block}`);
return Cardano.EpochNo(block.epoch!);
}
async #getDrepDelegatee(account: Responses['account_content']): Promise<Cardano.DRepDelegatee | undefined> {
Iif (!account.drep_id) return;
Iif (account.drep_id === 'drep_always_abstain') {
return { delegateRepresentative: { __typename: 'AlwaysAbstain' } };
}
Iif (account.drep_id === 'drep_always_no_confidence') {
return { delegateRepresentative: { __typename: 'AlwaysNoConfidence' } };
}
const cip129DrepId = Cardano.DRepID.toCip129DRepID(Cardano.DRepID(account.drep_id));
const dRepInfo = await this.#dRepProvider.getDRepInfo({ id: cip129DrepId });
return {
delegateRepresentative: dRepInfo
};
}
async #getKeyDeposit(lastRegistrationActivity: Responses['account_registration_content'][0] | undefined) {
Iif (!lastRegistrationActivity || lastRegistrationActivity.action === 'deregistered') {
return 0n;
}
const tx = await this.request<Responses['tx_content']>(`txs/${lastRegistrationActivity.tx_hash}`);
const block = await this.request<Responses['block_content']>(`blocks/${tx.block}`);
const epochParameters = await this.request<Responses['epoch_param_content']>(`epochs/${block.epoch}/parameters`);
return BigInt(epochParameters.key_deposit);
}
async #getDelegatee(
address: Cardano.RewardAccount,
currentEpoch: Cardano.EpochNo,
isUnregisteringAtEpoch: Cardano.EpochNo | undefined
): Promise<Cardano.Delegatee | undefined> {
const delegationHistory = await fetchSequentially<Responses['account_delegation_content'][0]>({
haveEnoughItems: (items) => items[items.length - 1]?.active_epoch <= currentEpoch,
paginationOptions: { order: 'desc' },
request: (paginationQueryString) => this.request(`accounts/${address}/delegations?${paginationQueryString}`)
});
const isRegisteredAt = (epochFromNow: number): true | undefined => {
Iif (!isUnregisteringAtEpoch) {
return true;
}
return isUnregisteringAtEpoch > currentEpoch + epochFromNow || undefined;
};
const poolIds = [
// current epoch
isRegisteredAt(0) && delegationHistory.find(({ active_epoch }) => active_epoch <= currentEpoch)?.pool_id,
// next epoch
isRegisteredAt(1) && delegationHistory.find(({ active_epoch }) => active_epoch <= currentEpoch + 1)?.pool_id,
// next next epoch
isRegisteredAt(2) && delegationHistory.find(({ active_epoch }) => active_epoch <= currentEpoch + 2)?.pool_id
] as Array<Cardano.PoolId | undefined>;
const poolIdsToFetch = uniq(poolIds.filter(isNotNil));
Iif (poolIdsToFetch.length === 0) {
return undefined;
}
const stakePools = await this.#stakePoolProvider.queryStakePools({
filters: { identifier: { values: poolIdsToFetch.map((id) => ({ id })) } },
pagination: { limit: 3, startAt: 0 }
});
const stakePoolMathingPoolId = (index: number) => stakePools.pageResults.find((pool) => pool.id === poolIds[index]);
return {
currentEpoch: stakePoolMathingPoolId(0),
nextEpoch: stakePoolMathingPoolId(1),
nextNextEpoch: stakePoolMathingPoolId(2)
};
}
}
|