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35 lines
1.8 KiB
Go
35 lines
1.8 KiB
Go
package mysql
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import (
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"context"
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"github.com/c9s/rockhopper"
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)
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func init() {
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AddMigration(upAddPositions, downAddPositions)
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}
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func upAddPositions(ctx context.Context, tx rockhopper.SQLExecutor) (err error) {
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// This code is executed when the migration is applied.
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_, err = tx.ExecContext(ctx, "CREATE TABLE `positions`\n(\n `gid` BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,\n `strategy` VARCHAR(32) NOT NULL,\n `strategy_instance_id` VARCHAR(64) NOT NULL,\n `symbol` VARCHAR(20) NOT NULL,\n `quote_currency` VARCHAR(10) NOT NULL,\n `base_currency` VARCHAR(10) NOT NULL,\n -- average_cost is the position average cost\n `average_cost` DECIMAL(16, 8) UNSIGNED NOT NULL,\n `base` DECIMAL(16, 8) NOT NULL,\n `quote` DECIMAL(16, 8) NOT NULL,\n `profit` DECIMAL(16, 8) NULL,\n -- trade related columns\n `trade_id` BIGINT UNSIGNED NOT NULL, -- the trade id in the exchange\n `side` VARCHAR(4) NOT NULL, -- side of the trade\n `exchange` VARCHAR(12) NOT NULL, -- exchange of the trade\n `traded_at` DATETIME(3) NOT NULL, -- millisecond timestamp\n PRIMARY KEY (`gid`),\n UNIQUE KEY `trade_id` (`trade_id`, `side`, `exchange`)\n);")
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if err != nil {
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return err
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}
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return err
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}
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func downAddPositions(ctx context.Context, tx rockhopper.SQLExecutor) (err error) {
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// This code is executed when the migration is rolled back.
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_, err = tx.ExecContext(ctx, "DROP TABLE IF EXISTS `positions`;")
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if err != nil {
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return err
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}
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return err
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}
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