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add cursor and limit to book offers

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This commit is contained in:
CJ Cobb
2021-03-02 10:15:14 -05:00
parent f992140646
commit 805bc14994
7 changed files with 47 additions and 28 deletions
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12
reporting/PostgresBackend.cpp
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@@ -279,10 +279,11 @@ PostgresBackend::fetchLedgerPage(
return {};
}
std::vector<LedgerObject>
std::pair<std::vector<LedgerObject>, std::optional<ripple::uint256>>
PostgresBackend::fetchBookOffers(
ripple::uint256 const& book,
uint32_t ledgerSequence,
std::uint32_t limit,
std::optional<ripple::uint256> const& cursor) const
{
PgQuery pgQuery(pgPool_);
@@ -294,7 +295,8 @@ PostgresBackend::fetchBookOffers(
if (cursor)
sql << " AND key > \'" << ripple::strHex(*cursor) << "\'";
sql << " ORDER BY key DESC, sequence DESC)"
<< " sub WHERE NOT deleted";
<< " sub WHERE NOT deleted"
<< " LIMIT " << std::to_string(limit);
auto res = pgQuery(sql.str().data());
if (size_t numRows = checkResult(res, 1))
{
@@ -316,9 +318,9 @@ PostgresBackend::fetchBookOffers(
[](auto& blob, auto& key) {
return LedgerObject{std::move(key), std::move(blob)};
});
return results;
return {results, results[results.size() - 1].key};
}
return {};
return {{}, {}};
}
std::vector<TransactionAndMetadata>
@@ -405,6 +407,7 @@ std::pair<
std::optional<AccountTransactionsCursor>>
PostgresBackend::fetchAccountTransactions(
ripple::AccountID const& account,
std::uint32_t limit,
std::optional<AccountTransactionsCursor> const& cursor) const
{
PgQuery pgQuery(pgPool_);
@@ -415,7 +418,6 @@ PostgresBackend::fetchAccountTransactions(
if (cursor)
sql << " AND ledger_sequence < " << cursor->ledgerSequence
<< " AND transaction_index < " << cursor->transactionIndex;
uint32_t limit = 300;
sql << " LIMIT " << std::to_string(limit);
auto res = pgQuery(sql.str().data());
if (size_t numRows = checkResult(res, 3))