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import {
BlockfrostPoolMetricsModel,
EpochModel,
OrderByOptions,
OwnerAddressModel,
PoolAPY,
PoolAPYModel,
PoolDataModel,
PoolMetricsModel,
PoolRegistrationModel,
PoolRetirementModel,
PoolUpdateModel,
QueryPoolsApyArgs,
RelayModel,
StakePoolStatsModel,
SubQuery
} from './types';
import {
Cardano,
MultipleChoiceSearchFilter,
ProviderError,
ProviderFailure,
QueryStakePoolsArgs,
StakePoolStats
} from '@cardano-sdk/core';
import { Logger } from 'ts-log';
import { Pool, QueryResult } from 'pg';
import { findLastEpoch } from '../../util';
import {
mapAddressOwner,
mapBlockfrostPoolMetrics,
mapEpoch,
mapPoolAPY,
mapPoolData,
mapPoolMetrics,
mapPoolRegistration,
mapPoolRetirement,
mapPoolStats,
mapPoolUpdate,
mapRelay
} from './mappers';
import Queries, {
addSentenceToQuery,
blockfrostQuery,
buildOrQueryFromClauses,
findPoolStats,
getIdentifierFullJoinClause,
getIdentifierWhereClause,
getStatusWhereClause,
poolsByPledgeMetSubqueries,
withPagination,
withSort
} from './queries';
export class StakePoolBuilder {
#db: Pool;
#logger: Logger;
constructor(db: Pool, logger: Logger) {
this.#db = db;
this.#logger = logger;
}
public async queryRetirements(hashesIds: number[]) {
this.#logger.debug('About to query pool retirements');
const result: QueryResult<PoolRetirementModel> = await this.#db.query(Queries.findPoolsRetirements, [hashesIds]);
return result.rows.length > 0 ? result.rows.map(mapPoolRetirement) : [];
}
public async queryRegistrations(hashesIds: number[]) {
this.#logger.debug('About to query pool registrations');
const result: QueryResult<PoolRegistrationModel> = await this.#db.query(Queries.findPoolsRegistrations, [
hashesIds
]);
return result.rows.length > 0 ? result.rows.map(mapPoolRegistration) : [];
}
public async queryPoolRelays(updatesIds: number[]) {
this.#logger.debug('About to query pool relays');
const result: QueryResult<RelayModel> = await this.#db.query(Queries.findPoolsRelays, [updatesIds]);
return result.rows.length > 0 ? result.rows.map(mapRelay) : [];
}
public async queryPoolOwners(updatesIds: number[]) {
this.#logger.debug('About to query pool owners');
const result: QueryResult<OwnerAddressModel> = await this.#db.query(Queries.findPoolsOwners, [updatesIds]);
return result.rows.length > 0 ? result.rows.map(mapAddressOwner) : [];
}
public async queryPoolAPY(hashesIds: number[], epochLength: number, options?: QueryPoolsApyArgs): Promise<PoolAPY[]> {
this.#logger.debug('About to query pools APY');
const defaultSort: OrderByOptions[] = [{ field: 'apy', order: 'desc' }];
const sorted = withSort(Queries.findPoolAPY(epochLength, options?.apyEpochsBackLimit), options?.sort, defaultSort);
const { query, args } = withPagination(sorted, [hashesIds], options?.pagination);
const result = await this.#db.query<PoolAPYModel>(query, args);
return result.rows.map(mapPoolAPY);
}
public async queryPoolData(updatesIds: number[], useBlockfrost: boolean, options?: QueryStakePoolsArgs) {
this.#logger.debug('About to query pool data');
const defaultSort: OrderByOptions[] = [
{ field: 'name', order: 'asc' },
{ field: 'pool_id', order: 'asc' }
];
const sorted = withSort(
useBlockfrost ? Queries.findBlockfrostPoolsData : Queries.findPoolsData,
options?.sort,
defaultSort
);
const { query, args } = withPagination(sorted, [updatesIds], options?.pagination);
const result = await this.#db.query<PoolDataModel>(query, args);
return result.rows.length > 0 ? result.rows.map(mapPoolData) : [];
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
public async queryPoolHashes(query: string, params: any[] = []) {
this.#logger.debug('About to query pool hashes');
const result: QueryResult<PoolUpdateModel> = await this.#db.query(query, params);
return result.rows.length > 0 ? result.rows.map(mapPoolUpdate) : [];
}
public async queryPoolMetrics(
hashesIds: number[],
totalStake: string | null,
useBlockfrost: boolean,
options?: QueryStakePoolsArgs
) {
this.#logger.debug('About to query pool metrics');
Iif (useBlockfrost) {
const sorted = withSort(Queries.findBlockfrostPoolsMetrics, options?.sort, [
{ field: 'saturation', order: 'desc' }
]);
const { query, args } = withPagination(sorted, [hashesIds], options?.pagination);
const result = await this.#db.query<BlockfrostPoolMetricsModel>(query, args);
return result.rows.map(mapBlockfrostPoolMetrics);
}
const sorted = withSort(Queries.findPoolsMetrics, options?.sort, [{ field: 'saturation', order: 'desc' }]);
const { query, args } = withPagination(sorted, [hashesIds, totalStake], options?.pagination);
const result = await this.#db.query<PoolMetricsModel>(query, args);
return result.rows.length > 0 ? result.rows.map(mapPoolMetrics) : [];
}
public buildPoolsByIdentifierQuery(
identifier: MultipleChoiceSearchFilter<
Partial<Pick<Cardano.PoolParameters, 'id'> & Pick<Cardano.StakePoolMetadata, 'name' | 'ticker'>>
>
) {
const { where, params } = getIdentifierWhereClause(identifier);
const whereClause = 'WHERE '.concat(where);
const query = `
${Queries.IDENTIFIER_QUERY.SELECT_CLAUSE}
${Queries.IDENTIFIER_QUERY.JOIN_CLAUSE.POOL_UPDATE}
${Queries.IDENTIFIER_QUERY.JOIN_CLAUSE.OFFLINE_METADATA}
${whereClause}
`;
return { id: { isPrimary: true, name: 'pools_by_identifier' }, params, query };
}
public buildPoolsByStatusQuery(status: Cardano.StakePoolStatus[]) {
const whereClause = getStatusWhereClause(status);
const query = `
${Queries.STATUS_QUERY.SELECT_CLAUSE}
WHERE ${whereClause}
`;
return { id: { isPrimary: true, name: 'pools_by_status' }, query };
}
public buildPoolsByPledgeMetQuery(pledgeMet: boolean) {
const subQueries = [...poolsByPledgeMetSubqueries];
subQueries.push({
id: { isPrimary: true, name: 'pools_by_pledge_met' },
query: `
${Queries.POOLS_WITH_PLEDGE_MET.SELECT_CLAUSE}
${Queries.POOLS_WITH_PLEDGE_MET.JOIN_CLAUSE}
WHERE ${Queries.POOLS_WITH_PLEDGE_MET.WHERE_CLAUSE(pledgeMet)}`
});
return subQueries;
}
public async getLastEpoch() {
this.#logger.debug('About to query last epoch');
const result: QueryResult<EpochModel> = await this.#db.query({
name: 'current_epoch',
text: findLastEpoch
});
const lastEpoch = result.rows[0];
Iif (!lastEpoch) throw new ProviderError(ProviderFailure.Unknown, null, "Couldn't find last epoch");
return lastEpoch.no;
}
public async getLastEpochWithData() {
this.#logger.debug('About to query last epoch with data');
const result: QueryResult<EpochModel> = await this.#db.query(Queries.findLastEpochWithData);
const lastEpoch = result.rows[0];
Iif (!lastEpoch) throw new ProviderError(ProviderFailure.Unknown, null, "Couldn't find last epoch");
return mapEpoch(lastEpoch);
}
public buildOrQuery(filters: QueryStakePoolsArgs['filters']) {
const subQueries: SubQuery[] = [];
const params = [];
let query = Queries.findPools;
if (filters?.identifier && filters.identifier.values.length > 0) {
const { id: _id, query: _query, params: _params } = this.buildPoolsByIdentifierQuery(filters.identifier);
subQueries.push({ id: _id, query: _query });
params.push(..._params);
}
if (filters?.status) {
const statusQuery = this.buildPoolsByStatusQuery(filters.status);
subQueries.push(statusQuery);
}
if (filters?.pledgeMet !== undefined) {
const pledgeMetQuery = this.buildPoolsByPledgeMetQuery(filters.pledgeMet);
subQueries.push(...pledgeMetQuery);
}
if (filters?.status || filters?.pledgeMet !== undefined)
subQueries.unshift({ id: { name: 'current_epoch' }, query: findLastEpoch });
if (subQueries.length > 0) {
query = subQueries.length > 1 ? buildOrQueryFromClauses(subQueries) : subQueries[0].query;
}
return { params, query };
}
// eslint-disable-next-line max-statements
public buildAndQuery(filters: QueryStakePoolsArgs['filters']) {
let query = Queries.findPools;
let groupByClause = ' GROUP BY ph.id, pu.id ORDER BY ph.id DESC';
const params = [];
const whereClause = [];
const containsIdentifierCondition = filters?.identifier && filters.identifier.values.length > 0;
if (filters?.pledgeMet !== undefined) {
const { WITH_CLAUSE, SELECT_CLAUSE, JOIN_CLAUSE, WHERE_CLAUSE } = Queries.POOLS_WITH_PLEDGE_MET;
query = WITH_CLAUSE + SELECT_CLAUSE + JOIN_CLAUSE;
whereClause.push(WHERE_CLAUSE(filters.pledgeMet));
if (containsIdentifierCondition) {
query = addSentenceToQuery(query, `${getIdentifierFullJoinClause()}`);
const { where, params: identifierParams } = getIdentifierWhereClause(filters!.identifier!);
whereClause.push(where);
params.push(...identifierParams);
}
if (filters.status) {
query = addSentenceToQuery(
query,
`
LEFT JOIN pool_retire pr ON
pr.id = (
SELECT id
FROM pool_retire pr2
WHERE pr2.hash_id = ph.id
ORDER BY id desc
LIMIT 1
)
`
);
whereClause.push(getStatusWhereClause(filters.status, { activeEpoch: 'ph.active_epoch_no' }));
}
groupByClause = ' GROUP BY ph.id, ph.update_id ORDER BY ph.id DESC';
} else if (filters?.status) {
query = `${Queries.STATUS_QUERY.WITH_CLAUSE} ${Queries.STATUS_QUERY.SELECT_CLAUSE}`;
whereClause.push(getStatusWhereClause(filters.status));
if (containsIdentifierCondition) {
query = addSentenceToQuery(query, Queries.IDENTIFIER_QUERY.JOIN_CLAUSE.OFFLINE_METADATA);
const { where, params: identifierParams } = getIdentifierWhereClause(filters!.identifier!);
whereClause.push(where);
params.push(...identifierParams);
}
} else if (containsIdentifierCondition) {
const { where, params: identifierParams } = getIdentifierWhereClause(filters!.identifier!);
query = `
${Queries.IDENTIFIER_QUERY.SELECT_CLAUSE}
${getIdentifierFullJoinClause()}
WHERE ${where}
`;
params.push(...identifierParams);
}
if (whereClause.length > 0) query = addSentenceToQuery(query, ` WHERE ${whereClause.join(' AND ')}`);
query = addSentenceToQuery(query, groupByClause);
return { params, query };
}
public async queryPoolStats(): Promise<StakePoolStats> {
this.#logger.debug('About to get pool stats');
const result: QueryResult<StakePoolStatsModel> = await this.#db.query(findPoolStats);
const poolStats = result.rows[0];
Iif (!poolStats) throw new ProviderError(ProviderFailure.Unknown, null, "Couldn't fetch pool stats");
return mapPoolStats(poolStats);
}
public buildBlockfrostQuery(filters: QueryStakePoolsArgs['filters']): { params: string[]; query: string } {
const query = blockfrostQuery.SELECT;
let params: string[] = [];
Iif (!filters) return { params, query };
const { _condition, identifier, pledgeMet, status } = filters;
const clauses: string[] = [query];
const whereConditions: string[] = [];
Iif (identifier || pledgeMet !== undefined) clauses.push(blockfrostQuery.identifierOrPledge.JOIN);
Iif (identifier) {
let where: string;
({ params, where } = getIdentifierWhereClause(filters!.identifier!));
clauses.push(blockfrostQuery.identifier.JOIN);
whereConditions.push(where);
}
Iif (pledgeMet !== undefined || status) clauses.push(blockfrostQuery.pledgeOrStatus.JOIN);
Iif (pledgeMet !== undefined) whereConditions.push(blockfrostQuery.pledge.WHERE(pledgeMet));
Iif (status) whereConditions.push(blockfrostQuery.status.WHERE(status));
// this happens when an empty object is provided as filter parameter
Iif (whereConditions.length === 0) return { params, query };
return {
params,
query: `${clauses.join('')}
WHERE
${whereConditions.join(` ${_condition === 'or' ? 'OR' : 'AND'}\n `)}`
};
}
}
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