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110 lines
3.4 KiB
Go
110 lines
3.4 KiB
Go
/*
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Copyright 2020, 2021 The Flux authors
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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 status
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import (
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"context"
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"fmt"
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"strings"
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"time"
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"k8s.io/client-go/rest"
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"sigs.k8s.io/cli-utils/pkg/kstatus/polling"
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"sigs.k8s.io/cli-utils/pkg/kstatus/polling/aggregator"
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"sigs.k8s.io/cli-utils/pkg/kstatus/polling/collector"
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"sigs.k8s.io/cli-utils/pkg/kstatus/polling/event"
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"sigs.k8s.io/cli-utils/pkg/kstatus/status"
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"sigs.k8s.io/cli-utils/pkg/object"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
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"github.com/fluxcd/flux2/pkg/log"
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)
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type StatusChecker struct {
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pollInterval time.Duration
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timeout time.Duration
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client client.Client
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statusPoller *polling.StatusPoller
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logger log.Logger
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}
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func NewStatusChecker(kubeConfig *rest.Config, pollInterval time.Duration, timeout time.Duration, log log.Logger) (*StatusChecker, error) {
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restMapper, err := apiutil.NewDynamicRESTMapper(kubeConfig)
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if err != nil {
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return nil, err
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}
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c, err := client.New(kubeConfig, client.Options{Mapper: restMapper})
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if err != nil {
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return nil, err
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}
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return &StatusChecker{
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pollInterval: pollInterval,
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timeout: timeout,
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client: c,
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statusPoller: polling.NewStatusPoller(c, restMapper),
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logger: log,
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}, nil
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}
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func (sc *StatusChecker) Assess(identifiers ...object.ObjMetadata) error {
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ctx, cancel := context.WithTimeout(context.Background(), sc.timeout)
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defer cancel()
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opts := polling.Options{PollInterval: sc.pollInterval, UseCache: true}
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eventsChan := sc.statusPoller.Poll(ctx, identifiers, opts)
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coll := collector.NewResourceStatusCollector(identifiers)
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done := coll.ListenWithObserver(eventsChan, desiredStatusNotifierFunc(cancel, status.CurrentStatus))
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<-done
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for _, rs := range coll.ResourceStatuses {
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switch rs.Status {
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case status.CurrentStatus:
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sc.logger.Successf("%s: %s ready", rs.Identifier.Name, strings.ToLower(rs.Identifier.GroupKind.Kind))
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case status.NotFoundStatus:
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sc.logger.Failuref("%s: %s not found", rs.Identifier.Name, strings.ToLower(rs.Identifier.GroupKind.Kind))
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default:
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sc.logger.Failuref("%s: %s not ready", rs.Identifier.Name, strings.ToLower(rs.Identifier.GroupKind.Kind))
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}
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}
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if coll.Error != nil || ctx.Err() == context.DeadlineExceeded {
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return fmt.Errorf("timed out waiting for condition")
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}
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return nil
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}
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// desiredStatusNotifierFunc returns an Observer function for the
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// ResourceStatusCollector that will cancel the context (using the cancelFunc)
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// when all resources have reached the desired status.
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func desiredStatusNotifierFunc(cancelFunc context.CancelFunc,
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desired status.Status) collector.ObserverFunc {
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return func(rsc *collector.ResourceStatusCollector, _ event.Event) {
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var rss []*event.ResourceStatus
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for _, rs := range rsc.ResourceStatuses {
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rss = append(rss, rs)
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}
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aggStatus := aggregator.AggregateStatus(rss, desired)
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if aggStatus == desired {
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cancelFunc()
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}
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}
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}
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