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70 lines
1.8 KiB
70 lines
1.8 KiB
// Copyright (c) 2021 Proton Technologies AG |
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// |
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// This file is part of ProtonMail Bridge. |
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// |
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// ProtonMail Bridge is free software: you can redistribute it and/or modify |
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// it under the terms of the GNU General Public License as published by |
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// the Free Software Foundation, either version 3 of the License, or |
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// (at your option) any later version. |
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// |
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// ProtonMail Bridge is distributed in the hope that it will be useful, |
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// but WITHOUT ANY WARRANTY; without even the implied warranty of |
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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// GNU General Public License for more details. |
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// |
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// You should have received a copy of the GNU General Public License |
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// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>. |
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package confirmer |
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import ( |
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"errors" |
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"sync" |
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"time" |
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) |
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// NOTE: For now, Confirmer only supports bool values but it could easily be made generic. |
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// Confirmer is used to ask for some value (e.g. a confirmation from a GUI element) |
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// in a threadsafe manner and retrieve that value later. |
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type Confirmer struct { |
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requests map[string]*Request |
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locker sync.Locker |
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} |
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func New() *Confirmer { |
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return &Confirmer{ |
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requests: make(map[string]*Request), |
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locker: &sync.Mutex{}, |
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} |
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} |
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// NewRequest creates a new request object that waits up to the given amount of time for the result. |
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func (c *Confirmer) NewRequest(timeout time.Duration) *Request { |
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c.locker.Lock() |
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defer c.locker.Unlock() |
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req := newRequest(timeout) |
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c.requests[req.ID()] = req |
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return req |
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} |
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// SetResult sets the result value of the request with the given ID. |
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func (c *Confirmer) SetResult(id string, value bool) error { |
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c.locker.Lock() |
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defer c.locker.Unlock() |
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req, ok := c.requests[id] |
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if !ok { |
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return errors.New("no such request") |
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} |
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req.ch <- value |
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close(req.ch) |
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delete(c.requests, id) |
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return nil |
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}
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