forked from rook/rook
Blaine Gardner
f8d9076a38
Allow the validation tool to read test config from a yaml file. To help users, also allow outputting a config file with default values and comments instructing how to use the config file. This work is in anticipation of adding more advanced configuration options that would be too cumbersome to set using cli flags. Signed-off-by: Blaine Gardner <blaine.gardner@redhat.com>
113 lines
3.1 KiB
Go
113 lines
3.1 KiB
Go
/*
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Copyright 2023 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package multus
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import (
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"context"
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"fmt"
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"time"
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meta "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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type validationState interface {
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Run(ctx context.Context, vsm *validationStateMachine) (suggestions []string, err error)
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}
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type validationStateMachine struct {
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vt *ValidationTest
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state validationState
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timer *time.Timer
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stateWasChanged bool
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resourceOwnerRefs []meta.OwnerReference
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testResults *ValidationTestResults
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lastSuggestions []string
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lastErr error
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done bool
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}
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func (vsm *validationStateMachine) SetNextState(nextState validationState) {
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vsm.stateWasChanged = true
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vsm.state = nextState
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}
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func (vsm *validationStateMachine) Exit() {
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vsm.done = true
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}
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func (vsm *validationStateMachine) Run(ctx context.Context) (*ValidationTestResults, error) {
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vsm.timer = time.NewTimer(vsm.vt.ResourceTimeout)
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defer func() { vsm.timer.Stop() }()
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for {
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select {
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case <-ctx.Done():
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return vsm.exitContextCanceled(ctx)
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case <-vsm.timer.C:
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vsm.testResults.addSuggestions(vsm.lastSuggestions...)
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return vsm.testResults, fmt.Errorf("multus validation test timed out: %w", vsm.lastErr)
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default:
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// give each state the full resource timeout to run successfully
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if vsm.stateWasChanged {
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vsm.resetTimer()
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vsm.stateWasChanged = false
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}
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// run the state
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suggestions, err := vsm.state.Run(ctx, vsm)
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// if the context was canceled, the error message won't be as useful as gathered from
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// the last context, so exit before updating the latest suggestions and error
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if ctx.Err() != nil {
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return vsm.exitContextCanceled(ctx)
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}
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// record the latest suggestions and error
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vsm.lastErr = err
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vsm.lastSuggestions = suggestions
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// exit the state machine, error or not
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if vsm.done {
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vsm.testResults.addSuggestions(vsm.lastSuggestions...)
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if vsm.lastErr != nil {
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return vsm.testResults, fmt.Errorf("multus validation test failed: %w", vsm.lastErr)
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}
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return vsm.testResults, nil
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}
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if err != nil {
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vsm.vt.Logger.Infof("continuing: %s", err)
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}
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time.Sleep(2 * time.Second)
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}
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}
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}
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func (vsm *validationStateMachine) resetTimer() {
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if !vsm.timer.Stop() {
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<-vsm.timer.C
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}
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vsm.timer.Reset(vsm.vt.ResourceTimeout)
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}
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func (vsm *validationStateMachine) exitContextCanceled(ctx context.Context) (*ValidationTestResults, error) {
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vsm.testResults.addSuggestions(vsm.lastSuggestions...)
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return vsm.testResults, fmt.Errorf("context canceled before multus validation test could complete: %s: %w", ctx.Err().Error(), vsm.lastErr)
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}
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