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nightly: fail pending request when quorumAckTracker closed (#611)
## Motivation #608
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| // Copyright 2025 StreamNative, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| package callback | ||
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| // Callback defines an interface for handling the completion of an asynchronous operation. | ||
| // It allows the caller to notify the system when an operation has completed successfully | ||
| // or when it has failed with an error. The interface provides two methods for handling | ||
| // both success and error cases. | ||
| // | ||
| // The generic type T represents the result type of the operation, which can vary depending | ||
| // on the specific use case. | ||
| // | ||
| // Methods: | ||
| // | ||
| // - Complete(t T): This method is called when the asynchronous operation completes successfully. | ||
| // It accepts a result of type T, which is the outcome of the operation. | ||
| // | ||
| // - CompleteError(err error): This method is called when the asynchronous operation fails. | ||
| // It accepts an error, which indicates the reason for the failure. | ||
| type Callback[T any] interface { | ||
| // Complete is invoked when the operation completes successfully with the result 't' of type T. | ||
| Complete(t T) | ||
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| // CompleteError is invoked when the operation fails, providing an error 'err' indicating the failure reason. | ||
| CompleteError(err error) | ||
| } |
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| // Copyright 2025 StreamNative, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
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| package callback | ||
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| import "sync/atomic" | ||
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| // Once ensures that a specific callback is executed only once, either on completion or on error. | ||
| // It prevents further execution of the callbacks after the first call and ensures atomicity | ||
| // of the operation using the atomic package. | ||
| // | ||
| // The generic type T represents the result type of the operation, and the callbacks | ||
| // provide the behavior for handling success or failure of the operation. | ||
| // | ||
| // Fields: | ||
| // - OnComplete: A function that gets called with the result of type T when the operation completes successfully. | ||
| // - OnCompleteError: A function that gets called with an error if the operation fails. | ||
| // - completed: An atomic boolean used to track if the operation has already completed, ensuring only one callback is executed. | ||
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| type Once[T any] struct { | ||
| OnComplete func(t T) // Callback function called on successful completion | ||
| OnCompleteError func(err error) // Callback function called when an error occurs | ||
| completed atomic.Bool // Atomic flag to track completion status | ||
| } | ||
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| // Complete is called to notify that the operation has completed successfully with the result 't'. | ||
| // It ensures that the 'OnComplete' callback is only called once. | ||
| func (c *Once[T]) Complete(t T) { | ||
| if !c.completed.CompareAndSwap(false, true) { | ||
| return | ||
| } | ||
| c.OnComplete(t) | ||
| } | ||
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| // CompleteError is called to notify that the operation has failed with an error 'err'. | ||
| // It ensures that the 'OnCompleteError' callback is only called once. | ||
| func (c *Once[T]) CompleteError(err error) { | ||
| if !c.completed.CompareAndSwap(false, true) { | ||
| return | ||
| } | ||
| c.OnCompleteError(err) | ||
| } | ||
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| // NewOnce creates a new instance of Once with the provided success and error callbacks. | ||
| // It ensures that the callbacks are invoked only once, either for success or failure. | ||
| func NewOnce[T any](onComplete func(t T), onError func(err error)) Callback[T] { | ||
| return &Once[T]{ | ||
| onComplete, | ||
| onError, | ||
| atomic.Bool{}, | ||
| } | ||
| } |
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