Peerplays_Blockchain/peerplays_migrated
1
0
Fork 0
Code Issues 35 Pull requests 4 Projects Releases 20 Packages Wiki Activity Actions

Improve index on account operation history

Browse source 
- operations are now indexed by account and sequence for effecient
traversal and query
This commit is contained in:
Daniel Larimer 2015-12-09 13:53:01 -05:00 committed by theoreticalbts
parent 09855166a2
commit 7f4b40f57d
3 changed files with 41 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
libraries/chain/include/graphene/chain/account_object.hpp
View file

@ -47,6 +47,7 @@ namespace graphene { namespace chain {
* Keep the most recent operation as a root pointer to a linked list of the transaction history.
*/
account_transaction_history_id_type most_recent_op;
uint32_t total_ops = 0;
/**
* When calculating votes it is necessary to know how much is stored in orders (and thus unavailable for
@ -342,6 +343,7 @@ FC_REFLECT_DERIVED( graphene::chain::account_statistics_object,
(graphene::chain::object),
(owner)
(most_recent_op)
(total_ops)
(total_core_in_orders)
(lifetime_fees_paid)
(pending_fees)(pending_vested_fees)

7
libraries/chain/include/graphene/chain/operation_history_object.hpp
View file

@ -86,8 +86,13 @@ namespace graphene { namespace chain {
public:
static const uint8_t space_id = implementation_ids;
static const uint8_t type_id = impl_account_transaction_history_object_type;
account_id_type account; /// the account this operation applies to
operation_history_id_type operation_id;
uint32_t sequence = 0; /// the operation position within the given account
account_transaction_history_id_type next;
std::pair<account_id_type,operation_history_id_type> account_op()const { return std::tie( account, operation_id ); }
std::pair<account_id_type,uint32_t> account_seq()const { return std::tie( account, sequence ); }
};
} } // graphene::chain
@ -95,4 +100,4 @@ FC_REFLECT_DERIVED( graphene::chain::operation_history_object, (graphene::chain:
(op)(result)(block_num)(trx_in_block)(op_in_trx)(virtual_op) )
FC_REFLECT_DERIVED( graphene::chain::account_transaction_history_object, (graphene::chain::object),
(operation_id)(next) )
(account)(operation_id)(sequence)(next) )

34
libraries/plugins/account_history/account_history_plugin.cpp
View file

@ -105,10 +105,13 @@ void account_history_plugin_impl::update_account_histories( const signed_block&
const auto& stats_obj = account_id(db).statistics(db);
const auto& ath = db.create<account_transaction_history_object>( [&]( account_transaction_history_object& obj ){
obj.operation_id = oho.id;
obj.account = account_id;
obj.sequence = stats_obj.total_ops+1;
obj.next = stats_obj.most_recent_op;
});
db.modify( stats_obj, [&]( account_statistics_object& obj ){
obj.most_recent_op = ath.id;
obj.total_ops = ath.sequence;
});
}
}
@ -134,6 +137,35 @@ void account_history_plugin_impl::update_account_histories( const signed_block&
}
} // end namespace detail
struct by_id;
struct by_seq;
struct by_op;
typedef multi_index_container<
account_transaction_history_object,
indexed_by<
ordered_unique< tag<by_id>,
member< object, object_id_type, &object::id > >,
ordered_unique< tag<by_seq>,
composite_key< account_transaction_history_object,
member< account_transaction_history_object, account_id_type, &account_transaction_history_object::account>,
member< account_transaction_history_object, uint32_t, &account_transaction_history_object::sequence>
>
>,
ordered_unique< tag<by_op>,
composite_key< account_transaction_history_object,
member< account_transaction_history_object, account_id_type, &account_transaction_history_object::account>,
member< account_transaction_history_object, operation_history_id_type, &account_transaction_history_object::operation_id>
>
>
>
> account_transaction_history_multi_index_type;
typedef generic_index<account_transaction_history_object, account_transaction_history_multi_index_type> account_transaction_history_index;
account_history_plugin::account_history_plugin() :
my( new detail::account_history_plugin_impl(*this) )
{
@ -163,7 +195,7 @@ void account_history_plugin::plugin_initialize(const boost::program_options::var
{
database().applied_block.connect( [&]( const signed_block& b){ my->update_account_histories(b); } );
database().add_index< primary_index< simple_index< operation_history_object > > >();
database().add_index< primary_index< simple_index< account_transaction_history_object > > >();
database().add_index< primary_index< account_transaction_history_index > >();
LOAD_VALUE_SET(options, "tracked-accounts", my->_tracked_accounts, graphene::chain::account_id_type);
}