85 lines
2.5 KiB
Go
85 lines
2.5 KiB
Go
/*
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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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https://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 events
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import (
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"k8s.io/cli-runtime/pkg/genericclioptions"
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"sigs.k8s.io/cli-utils/cmd/printers"
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applyevent "sigs.k8s.io/cli-utils/pkg/apply/event"
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"opendev.org/airship/airshipctl/pkg/log"
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)
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// EventProcessor use to process event channels produced by executors
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type EventProcessor interface {
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Process(<-chan Event) error
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}
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// DefaultProcessor is implementation of EventProcessor
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type DefaultProcessor struct {
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errors []error
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applierChan chan<- applyevent.Event
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}
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// NewDefaultProcessor returns instance of DefaultProcessor as interface Implementation
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func NewDefaultProcessor(streams genericclioptions.IOStreams) EventProcessor {
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applyCh := make(chan applyevent.Event)
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go printers.GetPrinter(printers.EventsPrinter, streams).Print(applyCh, false)
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return &DefaultProcessor{
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errors: []error{},
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applierChan: applyCh,
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}
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}
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// Process is implementation of EventProcessor
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func (p *DefaultProcessor) Process(ch <-chan Event) error {
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for e := range ch {
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switch e.Type {
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case ApplierType:
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p.processApplierEvent(e.ApplierEvent)
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case ErrorType:
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p.errors = append(p.errors, e.ErrorEvent.Error)
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case StatusPollerType:
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log.Fatalf("Processing for status poller events are not yet implemented")
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case WaitType:
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log.Fatalf("Processing for wait events are not yet implemented")
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default:
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log.Fatalf("Unknown event type received: %d", e.Type)
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}
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}
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return checkErrors(p.errors)
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}
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func (p *DefaultProcessor) processApplierEvent(e applyevent.Event) {
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if e.Type == applyevent.ErrorType {
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log.Printf("Received error when applying errors to kubernetes %v", e.ErrorEvent.Err)
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p.errors = append(p.errors, e.ErrorEvent.Err)
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// Don't write errors events to applier channel, as it will use os.Exit to stop program execution
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return
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}
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p.applierChan <- e
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}
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// Check list of errors, and verify that these errors we are able to tolerate
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// currently we simply check if the list is empty or not
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func checkErrors(errs []error) error {
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if len(errs) != 0 {
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return ErrEventReceived{
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errors: errs,
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}
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}
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return nil
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}
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