/* This file is part of TALER Copyright (C) 2014, 2015 Christian Grothoff (and other contributing authors) TALER is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. TALER is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with TALER; see the file COPYING. If not, If not, see */ /** * @file mintdb/perf_taler_mintdb_interpreter.c * @brief Interpreter library for mint database performance analysis * @author Nicolas Fournier */ #include "platform.h" #include "perf_taler_mintdb_interpreter.h" #include "perf_taler_mintdb_init.h" #include "gauger.h" /** * Represents the state of the interpreter */ struct PERF_TALER_MINTDB_interpreter_state { /** * State of the commands */ struct PERF_TALER_MINTDB_Cmd *cmd; /** * Database plugin */ struct TALER_MINTDB_Plugin *plugin; /** * Current database session */ struct TALER_MINTDB_Session *session; /** * The current index of the interpreter */ unsigned int i; }; /** * Free the memory of @a data, with data of type @a type */ static void data_free (union PERF_TALER_MINTDB_Data *data, enum PERF_TALER_MINTDB_Type type) { switch (type) { case PERF_TALER_MINTDB_DEPOSIT: PERF_TALER_MINTDB_deposit_free (data->deposit); data->deposit = NULL; return; case PERF_TALER_MINTDB_BLINDCOIN: PERF_TALER_MINTDB_collectable_blindcoin_free (data->blindcoin); data->blindcoin = NULL; return; case PERF_TALER_MINTDB_RESERVE: PERF_TALER_MINTDB_reserve_free (data->reserve); data->reserve = NULL; return; case PERF_TALER_MINTDB_DENOMINATION_INFO: PERF_TALER_MINTDB_denomination_free (data->dki); data->dki = NULL; return; case PERF_TALER_MINTDB_COIN_INFO: PERF_TALER_MINTDB_coin_public_info_free (data->cpi); data->cpi = NULL; return; default: return; } } /** * Finds the first command in cmd with the name search * * @return the index of the first command with name search * GNUNET_SYSERR if none found */ static int cmd_find (const struct PERF_TALER_MINTDB_Cmd *cmd, const char *search) { unsigned int i; for (i=0; PERF_TALER_MINTDB_CMD_END != cmd[i].command; i++) if (0 == strcmp (cmd[i].label, search)) return i; return GNUNET_SYSERR; } /** * Initialization of a command array */ static int cmd_init (struct PERF_TALER_MINTDB_Cmd cmd[]) { unsigned int i = 0; for (i=0; PERF_TALER_MINTDB_CMD_END != cmd[i].command; i++) { switch (cmd[i].command) { case PERF_TALER_MINTDB_CMD_SAVE_ARRAY: // Allocation of memory for saving data cmd[i].details.save_array.data_saved = GNUNET_new_array (cmd[i].details.save_array.nb_saved, union PERF_TALER_MINTDB_Data); break; case PERF_TALER_MINTDB_CMD_LOAD_ARRAY: // Creating the permutation array to randomize the data order { int save_index ; GNUNET_assert (GNUNET_SYSERR != (save_index = cmd_find ( cmd, cmd[i].details.load_array.label_save))); GNUNET_assert (NULL != (cmd[i].details.load_array.permutation = GNUNET_CRYPTO_random_permute ( GNUNET_CRYPTO_QUALITY_WEAK, cmd[save_index].details.save_array.nb_saved))); // Initializing the type based on the type of the saved array cmd[i].exposed_type = cmd[save_index].details.save_array.type_saved; } break; default: break; } } return GNUNET_OK; } /** * Free the memory of the command chain */ static int cmd_clean (struct PERF_TALER_MINTDB_Cmd cmd[]) { unsigned int i = 0; for (i = 0; PERF_TALER_MINTDB_CMD_END != cmd[i].command; i++) { switch (cmd[i].command) { case PERF_TALER_MINTDB_CMD_SAVE_ARRAY: { unsigned int j; for (j = 0; j < cmd[i].details.save_array.nb_saved; j++) { data_free (&cmd[i].details.save_array.data_saved[j], cmd[i].details.save_array.type_saved); } GNUNET_free (cmd[i].details.save_array.data_saved); cmd[i].details.save_array.data_saved = NULL; } break; case PERF_TALER_MINTDB_CMD_LOAD_ARRAY: GNUNET_free (cmd[i].details.load_array.permutation); cmd[i].details.load_array.permutation = NULL; break; default: data_free (&cmd[i].exposed, cmd[i].exposed_type); break; } } return GNUNET_OK; }; /** * Handles the command END_LOOP for the interpreter */ static void interpret_end_loop (struct PERF_TALER_MINTDB_interpreter_state *state) { unsigned int i; union PERF_TALER_MINTDB_Data zero = {0}; int jump; GNUNET_assert (GNUNET_SYSERR != (jump = cmd_find (state->cmd, state->cmd[state->i] .details.end_loop.label_loop))); // Cleaning up the memory in the loop for (i = jump; i < state->i; i++) { data_free (&state->cmd[i].exposed, state->cmd[i].exposed_type); state->cmd[i].exposed = zero; } state->cmd[jump].details.loop.curr_iteration++; // If the loop is not finished if (state->cmd[jump].details.loop.max_iterations > state->cmd[jump].details.loop.curr_iteration) { // jump back to the start state->i = jump; }else{ // Reset the loop counter and continue running state->cmd[jump].details.loop.curr_iteration = 0; } } /** * Saves the data exposed by another command into * an array in the command specific struct. */ static void interpret_save_array (struct PERF_TALER_MINTDB_interpreter_state *state) { int loop_index, save_index; unsigned int selection_chance; // Array initialization on first loop iteration // Alows for nested loops GNUNET_assert (GNUNET_SYSERR != (loop_index = cmd_find (state->cmd, state->cmd[state->i] .details.save_array.label_loop))); GNUNET_assert (GNUNET_SYSERR != (save_index = cmd_find (state->cmd, state->cmd[state->i] .details.save_array.label_save))); if (0 == state->cmd[loop_index].details.loop.curr_iteration) { state->cmd[state->i].details.save_array.index = 0; } // The probobility distribution of the saved items will be a little biased // against the few last items but it should not be a big problem. selection_chance = state->cmd[loop_index].details.loop.max_iterations / state->cmd[state->i].details.save_array.nb_saved; /* * If the remaining sapce is equal to the remaining number of * iterations, the item is automaticly saved. * * Else it is saved only if rdn is 0 */ if ((0 < (state->cmd[state->i].details.save_array.nb_saved - state->cmd[state->i].details.save_array.index)) && (((state->cmd[loop_index].details.loop.max_iterations - state->cmd[loop_index].details.loop.curr_iteration) == (state->cmd[state->i].details.save_array.nb_saved - state->cmd[state->i].details.save_array.index)) || (0 == GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, selection_chance)))) { union PERF_TALER_MINTDB_Data *save_location; union PERF_TALER_MINTDB_Data *item_saved; save_location = &state->cmd[state->i].details.save_array .data_saved[state->cmd[state->i].details.save_array.index]; item_saved = &state->cmd[save_index].exposed; switch (state->cmd[state->i].details.save_array.type_saved) { case PERF_TALER_MINTDB_TIME: save_location->time = item_saved->time; break; case PERF_TALER_MINTDB_DEPOSIT: save_location->deposit = PERF_TALER_MINTDB_deposit_copy (item_saved->deposit); break; case PERF_TALER_MINTDB_BLINDCOIN: save_location->blindcoin = PERF_TALER_MINTDB_collectable_blindcoin_copy (item_saved->blindcoin); break; case PERF_TALER_MINTDB_RESERVE: save_location->reserve = PERF_TALER_MINTDB_reserve_copy (item_saved->reserve); break; case PERF_TALER_MINTDB_DENOMINATION_INFO: save_location->dki = PERF_TALER_MINTDB_denomination_copy (item_saved->dki); break; case PERF_TALER_MINTDB_COIN_INFO: save_location->cpi = item_saved->cpi; break; default: break; } state->cmd[state->i].details.save_array.index++; } } static void interpret_load_array (struct PERF_TALER_MINTDB_interpreter_state *state) { unsigned int loop_iter; int loop_index, save_index; union PERF_TALER_MINTDB_Data zero = {0}; union PERF_TALER_MINTDB_Data *loaded_data; GNUNET_assert (GNUNET_SYSERR != (loop_index = cmd_find (state->cmd, state->cmd[state->i] .details.load_array.label_loop))); GNUNET_assert (GNUNET_SYSERR != (save_index = cmd_find (state->cmd, state->cmd[state->i] .details.load_array.label_save))); loop_iter = state->cmd[loop_index].details.loop.curr_iteration; { int i, quotient; quotient = loop_iter / state->cmd[save_index].details.save_array.nb_saved; loop_iter = loop_iter % state->cmd[save_index].details.save_array.nb_saved; for (i=0; i<=quotient; i++){ loop_iter = state->cmd[state->i].details.load_array.permutation[loop_iter]; } } /* Extracting the data from the loop_indexth indice in save_index * array. */ loaded_data = &state->cmd[save_index].details.save_array.data_saved[loop_index]; switch (state->cmd[state->i].exposed_type) { case PERF_TALER_MINTDB_TIME: state->cmd[state->i].exposed.time = loaded_data->time; break; case PERF_TALER_MINTDB_DEPOSIT: state->cmd[state->i].exposed.deposit = loaded_data->deposit; break; case PERF_TALER_MINTDB_BLINDCOIN: state->cmd[state->i].exposed.blindcoin = loaded_data->blindcoin; break; case PERF_TALER_MINTDB_RESERVE: state->cmd[state->i].exposed.reserve = loaded_data->reserve; break; case PERF_TALER_MINTDB_DENOMINATION_INFO: state->cmd[state->i].exposed.dki = loaded_data->dki; case PERF_TALER_MINTDB_COIN_INFO: state->cmd[state->i].exposed.cpi = loaded_data->cpi; default: break; } *loaded_data = zero; } /** * Main interpreter loop. * */ static int interpret (struct PERF_TALER_MINTDB_interpreter_state *state) { for (state->i=0; PERF_TALER_MINTDB_CMD_END != state->cmd[state->i].command; state->i++) { switch (state->cmd[state->i].command) { case PERF_TALER_MINTDB_CMD_END: return GNUNET_YES; case PERF_TALER_MINTDB_CMD_DEBUG: printf ("%s\n", state->cmd[state->i].label); break; case PERF_TALER_MINTDB_CMD_LOOP: break; case PERF_TALER_MINTDB_CMD_END_LOOP: interpret_end_loop (state); break; case PERF_TALER_MINTDB_CMD_GET_TIME: clock_gettime (CLOCK_MONOTONIC, &state->cmd[state->i].exposed.time); break; case PERF_TALER_MINTDB_CMD_GAUGER: { int start_index, stop_index; struct timespec start, stop; unsigned long elapsed_ms; GNUNET_assert (GNUNET_SYSERR != (start_index = cmd_find (state->cmd, state->cmd[state->i] .details.gauger.label_start))); GNUNET_assert (GNUNET_SYSERR != (stop_index = cmd_find (state->cmd, state->cmd[state->i] .details.gauger.label_stop))); start = state->cmd[start_index].exposed.time; stop = state->cmd[stop_index].exposed.time; elapsed_ms = (start.tv_sec - stop.tv_sec) * 1000 + (start.tv_nsec - stop.tv_nsec) / 1000000; GAUGER ("MINTDB", state->cmd[state->i].details.gauger.description, elapsed_ms / state->cmd[state->i].details.gauger.divide, "milliseconds"); } break; case PERF_TALER_MINTDB_CMD_NEW_SESSION: state->session = state->plugin->get_session (state->plugin->cls, GNUNET_YES); break; case PERF_TALER_MINTDB_CMD_START_TRANSACTION: state->plugin->start (state->plugin->cls, state->session); break; case PERF_TALER_MINTDB_CMD_COMMIT_TRANSACTION: state->plugin->commit (state->plugin->cls, state->session); break; case PERF_TALER_MINTDB_CMD_ABORT_TRANSACTION: state->plugin->rollback (state->plugin->cls, state->session); case PERF_TALER_MINTDB_CMD_SAVE_ARRAY: interpret_save_array (state); break; case PERF_TALER_MINTDB_CMD_LOAD_ARRAY: interpret_load_array (state); break; case PERF_TALER_MINTDB_CMD_INSERT_DEPOSIT: { int dki_index; struct TALER_MINTDB_Deposit *deposit; GNUNET_assert (GNUNET_SYSERR != (dki_index = cmd_find(state->cmd, state->cmd[state->i] .details.insert_deposit.label_dki))); GNUNET_assert (NULL != (deposit = PERF_TALER_MINTDB_deposit_init ( state->cmd[dki_index].exposed.dki))); GNUNET_assert ( state->plugin->insert_deposit (state->plugin->cls, state->session, deposit)); state->cmd[state->i].exposed.deposit = deposit; } break; case PERF_TALER_MINTDB_CMD_GET_DEPOSIT: { int source_index; struct TALER_MINTDB_Deposit *deposit; GNUNET_assert (GNUNET_SYSERR != (source_index = cmd_find (state->cmd, state->cmd[state->i] .details.get_deposit.label_source))); GNUNET_assert (NULL != (deposit = state->cmd[source_index].exposed.deposit)); state->plugin->have_deposit (state->plugin->cls, state->session, deposit); } break; case PERF_TALER_MINTDB_CMD_INSERT_RESERVE: { struct TALER_MINTDB_Reserve *reserve; json_t *details = NULL; GNUNET_assert (NULL != (details = json_pack ("{s:i}","justification", GNUNET_CRYPTO_random_u32 ( GNUNET_CRYPTO_QUALITY_WEAK, UINT32_MAX)))); reserve = PERF_TALER_MINTDB_reserve_init (); state->plugin->reserves_in_insert ( state->plugin->cls, state->session, &reserve->pub, &reserve->balance, details ); json_decref (details); state->cmd[state->i].exposed.reserve = reserve; } break; case PERF_TALER_MINTDB_CMD_GET_RESERVE: { int source_index; struct TALER_MINTDB_Reserve *reserve; GNUNET_assert (GNUNET_SYSERR != (source_index = cmd_find (state->cmd, state->cmd[state->i] .details.get_reserve.label_source))); GNUNET_assert (NULL != (reserve = state->cmd[source_index].exposed.reserve)); GNUNET_assert (GNUNET_OK == (state->plugin->reserve_get (state->plugin->cls, state->session, reserve))); } break; case PERF_TALER_MINTDB_CMD_INSERT_DENOMINATION: { struct TALER_MINTDB_DenominationKeyIssueInformation *dki = PERF_TALER_MINTDB_denomination_init (); state->plugin->insert_denomination_info (state->plugin->cls, state->session, &dki->denom_pub, &dki->issue); state->cmd[state->i].exposed.dki = dki; } break; case PERF_TALER_MINTDB_CMD_GET_DENOMINATION: { int source_index; struct TALER_MINTDB_DenominationKeyIssueInformation *dki; GNUNET_assert (GNUNET_SYSERR != (source_index = cmd_find (state->cmd, state->cmd[state->i] .details.get_denomination.label_source))); GNUNET_assert (NULL != (dki = state->cmd[source_index].exposed.dki)); state->plugin->get_denomination_info (state->plugin->cls, state->session, &dki->denom_pub, &dki->issue); } break; case PERF_TALER_MINTDB_CMD_INSERT_WITHDRAW: { int dki_index, reserve_index; struct TALER_MINTDB_CollectableBlindcoin *blindcoin ; GNUNET_assert (GNUNET_SYSERR != (dki_index = cmd_find ( state->cmd, state->cmd[state->i].details.insert_withdraw.label_dki))); GNUNET_assert (GNUNET_SYSERR != (reserve_index = cmd_find ( state->cmd, state->cmd[state->i].details.insert_withdraw.label_reserve))); GNUNET_assert (NULL != (blindcoin = PERF_TALER_MINTDB_collectable_blindcoin_init ( state->cmd[dki_index].exposed.dki, state->cmd[reserve_index].exposed.reserve))); state->plugin->insert_withdraw_info (state->plugin->cls, state->session, blindcoin); state->cmd[state->i].exposed.blindcoin = blindcoin; } break; case PERF_TALER_MINTDB_CMD_GET_WITHDRAW: { int source_index; struct TALER_MINTDB_CollectableBlindcoin *blindcoin ; GNUNET_assert (GNUNET_SYSERR != (source_index = cmd_find (state->cmd, state->cmd[state->i] .details.get_denomination.label_source))); GNUNET_assert (NULL != (blindcoin = state->cmd[source_index].exposed.blindcoin)); state->plugin->get_withdraw_info (state->plugin->cls, state->session, &blindcoin->h_coin_envelope, blindcoin); } break; default : break; } } return GNUNET_OK; } /** * Runs the commands given in @a cmd, working with * the database referenced by @a db_plugin */ int PERF_TALER_MINTDB_interpret (struct TALER_MINTDB_Plugin *db_plugin, struct PERF_TALER_MINTDB_Cmd cmd[]) { struct PERF_TALER_MINTDB_interpreter_state state = {.i = 0, .cmd = cmd, .plugin = db_plugin}; // Initializing commands cmd_init (state.cmd); // Running the interpreter GNUNET_assert (NULL != (state.session = db_plugin->get_session (db_plugin->cls, GNUNET_YES))); interpret (&state); // Cleaning the memory cmd_clean (cmd); return GNUNET_YES; }