mirror of
https://github.com/aclindsa/moneygo.git
synced 2024-12-27 16:02:27 -05:00
Aaron Lindsay
a357d38eee
This adds 'shadow' types used only by the store/db internal package whch handle converting these types to their DB-equivalent values. This change should allow reports to be generated significantly faster since it allows a large portion of the computation to be shifted to the database engines.
105 lines
2.8 KiB
Go
105 lines
2.8 KiB
Go
package db
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import (
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"database/sql"
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"fmt"
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"github.com/aclindsa/gorp"
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"github.com/aclindsa/moneygo/internal/config"
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"github.com/aclindsa/moneygo/internal/models"
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"github.com/aclindsa/moneygo/internal/store"
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_ "github.com/go-sql-driver/mysql"
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_ "github.com/lib/pq"
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_ "github.com/mattn/go-sqlite3"
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"log"
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"strings"
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)
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// luaMaxLengthBuffer is intended to be enough bytes such that a given string
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// no longer than models.LuaMaxLength is sure to fit within a database
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// implementation's string type specified by the same.
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const luaMaxLengthBuffer int = 4096
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func getDbMap(db *sql.DB, dbtype config.DbType) (*gorp.DbMap, error) {
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var dialect gorp.Dialect
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if dbtype == config.SQLite {
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dialect = gorp.SqliteDialect{}
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} else if dbtype == config.MySQL {
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dialect = gorp.MySQLDialect{
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Engine: "InnoDB",
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Encoding: "UTF8",
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}
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} else if dbtype == config.Postgres {
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dialect = gorp.PostgresDialect{
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LowercaseFields: true,
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}
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} else {
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return nil, fmt.Errorf("Don't know gorp dialect to go with '%s' DB type", dbtype.String())
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}
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dbmap := &gorp.DbMap{Db: db, Dialect: dialect}
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dbmap.AddTableWithName(models.User{}, "users").SetKeys(true, "UserId")
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dbmap.AddTableWithName(models.Session{}, "sessions").SetKeys(true, "SessionId")
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dbmap.AddTableWithName(models.Security{}, "securities").SetKeys(true, "SecurityId")
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dbmap.AddTableWithName(Price{}, "prices").SetKeys(true, "PriceId")
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dbmap.AddTableWithName(models.Account{}, "accounts").SetKeys(true, "AccountId")
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dbmap.AddTableWithName(models.Transaction{}, "transactions").SetKeys(true, "TransactionId")
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dbmap.AddTableWithName(Split{}, "splits").SetKeys(true, "SplitId")
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rtable := dbmap.AddTableWithName(models.Report{}, "reports").SetKeys(true, "ReportId")
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rtable.ColMap("Lua").SetMaxSize(models.LuaMaxLength + luaMaxLengthBuffer)
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err := dbmap.CreateTablesIfNotExists()
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if err != nil {
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return nil, err
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}
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return dbmap, nil
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}
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func getDSN(dbtype config.DbType, dsn string) string {
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if dbtype == config.MySQL && !strings.Contains(dsn, "parseTime=true") {
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log.Fatalf("The DSN for MySQL MUST contain 'parseTime=True' but does not!")
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}
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return dsn
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}
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type DbStore struct {
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dbMap *gorp.DbMap
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}
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func (db *DbStore) Empty() error {
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return db.dbMap.TruncateTables()
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}
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func (db *DbStore) Begin() (store.Tx, error) {
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tx, err := db.dbMap.Begin()
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if err != nil {
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return nil, err
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}
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return &Tx{db.dbMap.Dialect, tx}, nil
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}
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func (db *DbStore) Close() error {
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err := db.dbMap.Db.Close()
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db.dbMap = nil
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return err
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}
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func GetStore(dbtype config.DbType, dsn string) (store store.Store, err error) {
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dsn = getDSN(dbtype, dsn)
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database, err := sql.Open(dbtype.String(), dsn)
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if err != nil {
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return nil, err
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}
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defer func() {
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if err != nil {
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database.Close()
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}
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}()
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dbmap, err := getDbMap(database, dbtype)
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if err != nil {
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return nil, err
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}
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return &DbStore{dbmap}, nil
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}
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