java_wallet

Java Wallet models

https://github.com/burst-apps-team/burstcoin

Production and development

Add indexes in your wallet DB for speedups:

CREATE INDEX transaction_height_timestamp ON transaction(height, timestamp);
CREATE INDEX asset_height ON asset(height);

Development

Upgrade DB schema, new wallet version

Replace init-mysql.sql from init-mysql.sql

Generate new models:

manage.py inspectdb --database java_wallet > java_wallet/models_new.py

Execute replaces:

sed -i '/from django.db import models/a from .fields import PositiveBigIntegerField, TimestampField' java_wallet/models_new.py
sed -i 's/models.BigIntegerField/PositiveBigIntegerField/g' java_wallet/models_new.py
sed -i 's/timestamp = models.IntegerField/timestamp = TimestampField/g' java_wallet/models_new.py
sed -i "s/block = models.ForeignKey(Block, models.DO_NOTHING)/block = models.ForeignKey(Block, models.DO_NOTHING, to_field='id')/g" java_wallet/models_new.py
sed -i 's/generation_signature = models.CharField(max_length=64)/generation_signature = models.BinaryField(max_length=64)/g' java_wallet/models_new.py
sed -i "s/previous_block = models.ForeignKey('self', models.DO_NOTHING, blank=True, null=True)/previous_block = models.ForeignKey('self', models.DO_NOTHING, blank=True, null=True, related_name='previous_block_r', to_field='id')/g" java_wallet/models_new.py
sed -i "s/next_block = models.ForeignKey('self', models.DO_NOTHING, blank=True, null=True)/next_block = models.ForeignKey('self', models.DO_NOTHING, blank=True, null=True, related_name='next_block_r', to_field='id')/g" java_wallet/models_new.py
sed -i 's/managed = False/managed = True/g' java_wallet/models.py

Compare current and new model:

diff java_wallet/models.py java_wallet/models_new.py

Replace model:

mv java_wallet/models_new.py java_wallet/models.py

Recreate migration:

rm java_wallet/migrations/0001_initial.py
manage.py makemigrations java_wallet

Do changes in code if needed.