87 lines
1.8 KiB
Go
87 lines
1.8 KiB
Go
package logic
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import (
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"blackforestbytes.com/simplecloudnotifier/api/apierr"
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"blackforestbytes.com/simplecloudnotifier/common/ginresp"
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"blackforestbytes.com/simplecloudnotifier/db"
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"context"
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"database/sql"
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"errors"
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"time"
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)
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type AppContext struct {
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inner context.Context
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cancelFunc context.CancelFunc
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cancelled bool
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transaction *sql.Tx
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permissions PermissionSet
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}
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func CreateAppContext(innerCtx context.Context, cancelFn context.CancelFunc) *AppContext {
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return &AppContext{
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inner: innerCtx,
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cancelFunc: cancelFn,
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cancelled: false,
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transaction: nil,
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permissions: NewEmptyPermissions(),
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}
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}
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func (ac *AppContext) Deadline() (deadline time.Time, ok bool) {
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return ac.inner.Deadline()
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}
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func (ac *AppContext) Done() <-chan struct{} {
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return ac.inner.Done()
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}
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func (ac *AppContext) Err() error {
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return ac.inner.Err()
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}
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func (ac *AppContext) Value(key any) any {
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return ac.inner.Value(key)
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}
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func (ac *AppContext) Cancel() {
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ac.cancelled = true
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if ac.transaction != nil {
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err := ac.transaction.Rollback()
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if err != nil {
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panic("failed to rollback transaction: " + err.Error())
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}
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ac.transaction = nil
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}
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ac.cancelFunc()
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}
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func (ac *AppContext) FinishSuccess(res ginresp.HTTPResponse) ginresp.HTTPResponse {
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if ac.cancelled {
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panic("Cannot finish a cancelled request")
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}
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if ac.transaction != nil {
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err := ac.transaction.Commit()
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if err != nil {
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return ginresp.InternAPIError(apierr.COMMIT_FAILED, "Failed to comit changes to DB", err)
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}
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ac.transaction = nil
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}
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return res
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}
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func (ac *AppContext) GetOrCreateTransaction(db *db.Database) (*sql.Tx, error) {
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if ac.cancelled {
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return nil, errors.New("context cancelled")
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}
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if ac.transaction != nil {
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return ac.transaction, nil
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}
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tx, err := db.BeginTx(ac)
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if err != nil {
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return nil, err
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}
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ac.transaction = tx
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return tx, nil
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}
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