/
condition.go
42 lines (36 loc) · 1.21 KB
/
condition.go
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// Copyright 2018 Authors of Cilium
//
// 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.
package testutils
import (
"fmt"
"time"
)
// ConditionFunc is the function implementing the condition, it must return
// true if the condition has been met
type ConditionFunc func() bool
// WaitUntil evaluates the condition every 10 milliseconds and waits for the
// condition to be met. The function will time out and return an error after
// timeout
func WaitUntil(condition ConditionFunc, timeout time.Duration) error {
now := time.Now()
for {
if time.Since(now) > timeout {
return fmt.Errorf("timeout reached while waiting for condition")
}
if condition() {
return nil
}
time.Sleep(10 * time.Millisecond)
}
}