6a2fba6f21
The package will have Event object, that would represent any event that airshipctl can have, also this package provides Processor interface that is to be used to process, print, or track progress of the executor runners Change-Id: I184408f7b6130653cdbabbe5e5adaac2dd758663
83 lines
2.5 KiB
Go
83 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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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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