96 lines
3 KiB
C
96 lines
3 KiB
C
#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <uuid/uuid.h>
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#include <models/relay.h>
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#include <macros.h>
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static int
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schedule_load_single(MDB_txn *mdb_txn, MDB_dbi mdb_dbi, db_key_schedule_e key_schedule, uint8_t relay_num, uint8_t weekday, MDB_val *value)
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{
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int err;
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size_t key_size = sizeof(db_key_schedule_e) + (2 * sizeof(uint8_t));
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uint8_t *key_data = malloc(key_size);
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uint8_t *key_data_writer = key_data;
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memmove(key_data_writer, &relay_num, sizeof(uint8_t));
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key_data_writer += sizeof(uint8_t);
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memmove(key_data_writer, &weekday, sizeof(uint8_t));
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key_data_writer += sizeof(uint8_t);
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memmove(key_data_writer, &key_schedule, sizeof(db_key_schedule_e));
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MDB_val key;
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key.mv_size = key_size;
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key.mv_data = key_data;
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if((err = mdb_get(mdb_txn, mdb_dbi, &key, value)) != 0)
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{
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LOG_ERROR("mdb_get error %s\n", mdb_strerror(err));
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mdb_txn_abort(mdb_txn);
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free(key_data);
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return 1;
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}
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free(key_data);
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return 0;
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}
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schedule_t*
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schedule_load(MDB_env *mdb_env, uint8_t relay_num, uint8_t weekday)
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{
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int err;
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MDB_txn *mdb_txn;
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MDB_dbi mdb_dbi;
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schedule_t *new_schedule;
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uuid_t off_id;
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memset(off_id, 0, sizeof(uuid_t));
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memcpy(off_id, "off", 3);
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if((err = mdb_txn_begin(mdb_env, NULL, MDB_RDONLY, &mdb_txn)) != 0)
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{
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LOG_ERROR("mdb_txn_begin error %s\n", mdb_strerror(err));
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return schedule_create(off_id, weekday, 0, NULL);
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}
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if((err = mdb_dbi_open(mdb_txn, "schedules", 0, &mdb_dbi)) != 0)
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{
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switch(err)
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{
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case MDB_NOTFOUND:
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LOG_INFO("no schedule db found in db. returning new one (no schedules db)\n");
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mdb_txn_abort(mdb_txn);
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break;
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default:
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LOG_ERROR("mdb_txn_begin error %s\n", mdb_strerror(err));
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}
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return schedule_create(off_id, weekday, 0, NULL);
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}
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MDB_val value;
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if((err = schedule_load_single(mdb_txn, mdb_dbi, DB_KEY_SCHEDULE_ID, relay_num, weekday, &value)) != 0)
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{
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LOG_INFO("no schedule for relay %d and weekday %d found in db. returning new one\n", relay_num, weekday);
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mdb_txn_abort(mdb_txn); // transaction is read only
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return schedule_create(off_id, weekday, 0, NULL);
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}
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uuid_t *schedule_id = (uuid_t*)value.mv_data;
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if((err = schedule_load_single(mdb_txn, mdb_dbi, DB_KEY_SCHEDULE_PERIODS, relay_num, weekday, &value)) != 0)
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{
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LOG_INFO("no schedule for relay %d and weekday %d found in db. returning new one\n", relay_num, weekday);
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mdb_txn_abort(mdb_txn); // transaction is read only
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return schedule_create(off_id, weekday, 0, NULL);
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}
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uint16_t schedule_periods_length = ((uint16_t*)value.mv_data)[0];
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uint16_t *schedule_periods = ((uint16_t*)value.mv_data) + 1;
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new_schedule = schedule_create(*schedule_id, weekday, schedule_periods_length, schedule_periods);
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mdb_txn_abort(mdb_txn); // transaction is read only
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return new_schedule;
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}
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