// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.

package querycoord

type condition interface {
	waitToFinish() error
	notify(err error)
}

type taskCondition struct {
	done chan error
}

func (tc *taskCondition) waitToFinish() error {
	err := <-tc.done
	return err
}

func (tc *taskCondition) notify(err error) {
	tc.done <- err
}

func newTaskCondition() *taskCondition {
	return &taskCondition{
		done: make(chan error, 1),
	}
}