mirror of
https://gitee.com/milvus-io/milvus.git
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4e264003bf
Feature Introduced: 1. Ensure ImportV2 waits for the index to be built Enhancements Introduced: 1. Utilization of local time for timeout ts instead of allocating ts from rootcoord. 3. Enhanced input file length check for binlog import. 4. Removal of duplicated manager in datanode. 5. Renaming of executor to scheduler in datanode. 6. Utilization of a thread pool in the scheduler in datanode. issue: https://github.com/milvus-io/milvus/issues/28521 --------- Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
115 lines
2.8 KiB
Go
115 lines
2.8 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package conc
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import "go.uber.org/atomic"
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type future interface {
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wait()
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OK() bool
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Err() error
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}
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// Future is a result type of async-await style.
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// It contains the result (or error) of an async task.
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// Trying to obtain the result (or error) blocks until the async task completes.
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type Future[T any] struct {
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ch chan struct{}
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value T
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err error
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done *atomic.Bool
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}
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func newFuture[T any]() *Future[T] {
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return &Future[T]{
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ch: make(chan struct{}),
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done: atomic.NewBool(false),
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}
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}
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func (future *Future[T]) wait() {
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<-future.ch
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}
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// Return the result and error of the async task.
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func (future *Future[T]) Await() (T, error) {
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future.wait()
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return future.value, future.err
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}
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// Return the result of the async task,
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// nil if no result or error occurred.
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func (future *Future[T]) Value() T {
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<-future.ch
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return future.value
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}
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// Done indicates if the fn has finished.
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func (future *Future[T]) Done() bool {
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return future.done.Load()
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}
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// False if error occurred,
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// true otherwise.
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func (future *Future[T]) OK() bool {
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<-future.ch
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return future.err == nil
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}
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// Return the error of the async task,
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// nil if no error.
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func (future *Future[T]) Err() error {
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<-future.ch
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return future.err
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}
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// Return a read-only channel,
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// which will be closed if the async task completes.
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// Use this if you need to wait the async task in a select statement.
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func (future *Future[T]) Inner() <-chan struct{} {
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return future.ch
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}
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// Go spawns a goroutine to execute fn,
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// returns a future that contains the result of fn.
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// NOTE: use Pool if you need limited goroutines.
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func Go[T any](fn func() (T, error)) *Future[T] {
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future := newFuture[T]()
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go func() {
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future.value, future.err = fn()
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close(future.ch)
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future.done.Store(true)
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}()
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return future
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}
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// Await for multiple futures,
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// Return nil if no future returns error,
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// or return the first error in these futures.
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func AwaitAll[T future](futures ...T) error {
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for i := range futures {
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if !futures[i].OK() {
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return futures[i].Err()
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}
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}
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return nil
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}
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