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execute.go
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execute.go
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package preflight
import (
"encoding/json"
"strings"
"sync"
"time"
"github.com/pkg/errors"
"github.com/replicatedhq/kots/pkg/logger"
"github.com/replicatedhq/kots/pkg/store"
troubleshootv1beta2 "github.com/replicatedhq/troubleshoot/pkg/apis/troubleshoot/v1beta2"
"github.com/replicatedhq/troubleshoot/pkg/preflight"
troubleshootpreflight "github.com/replicatedhq/troubleshoot/pkg/preflight"
"go.uber.org/zap"
"k8s.io/client-go/rest"
)
// execute will execute the preflights using spec in preflightSpec.
// This spec should be rendered, no template functions remaining
func execute(appID string, sequence int64, preflightSpec *troubleshootv1beta2.Preflight, ignorePermissionErrors bool) (*troubleshootpreflight.UploadPreflightResults, error) {
logger.Debug("executing preflight checks",
zap.String("appID", appID),
zap.Int64("sequence", sequence))
progressChan := make(chan interface{}, 0) // non-zero buffer will result in missed messages
defer close(progressChan)
completeMx := sync.Mutex{}
isComplete := false
go func() {
for {
msg, ok := <-progressChan
if !ok {
return
}
logger.Debugf("%v", msg)
progress, ok := msg.(preflight.CollectProgress)
if !ok {
continue
}
// TODO: We need a nice title to display
progresBytes, err := json.Marshal(map[string]interface{}{
"completedCount": progress.CompletedCount,
"totalCount": progress.TotalCount,
"currentName": progress.CurrentName,
"currentStatus": progress.CurrentStatus,
"updatedAt": time.Now().Format(time.RFC3339),
})
if err != nil {
continue
}
completeMx.Lock()
if !isComplete {
_ = store.GetStore().SetPreflightProgress(appID, sequence, string(progresBytes))
}
completeMx.Unlock()
}
}()
restConfig, err := rest.InClusterConfig()
if err != nil {
return nil, errors.Wrap(err, "failed to read in cluster config")
}
collectOpts := troubleshootpreflight.CollectOpts{
Namespace: "",
IgnorePermissionErrors: ignorePermissionErrors,
ProgressChan: progressChan,
KubernetesRestConfig: restConfig,
}
logger.Debug("preflight collect phase")
collectResults, err := troubleshootpreflight.Collect(collectOpts, preflightSpec)
if err != nil && !isPermissionsError(err) {
return nil, errors.Wrap(err, "failed to collect")
}
clusterCollectResult, ok := collectResults.(troubleshootpreflight.ClusterCollectResult)
if !ok {
return nil, errors.Errorf("unexpected result type: %T", collectResults)
}
uploadPreflightResults := &troubleshootpreflight.UploadPreflightResults{}
if isPermissionsError(err) {
logger.Debug("skipping analyze due to RBAC errors")
rbacErrors := []*troubleshootpreflight.UploadPreflightError{}
for _, collector := range clusterCollectResult.Collectors {
for _, e := range collector.RBACErrors {
rbacErrors = append(rbacErrors, &preflight.UploadPreflightError{
Error: e.Error(),
})
}
}
uploadPreflightResults.Errors = rbacErrors
} else {
logger.Debug("preflight analyze phase")
analyzeResults := collectResults.Analyze()
// the typescript api added some flair to this result
// so let's keep it for compatibility
// MORE TYPES!
results := []*troubleshootpreflight.UploadPreflightResult{}
for _, analyzeResult := range analyzeResults {
uploadPreflightResult := &troubleshootpreflight.UploadPreflightResult{
IsFail: analyzeResult.IsFail,
IsWarn: analyzeResult.IsWarn,
IsPass: analyzeResult.IsPass,
Title: analyzeResult.Title,
Message: analyzeResult.Message,
URI: analyzeResult.URI,
}
results = append(results, uploadPreflightResult)
}
uploadPreflightResults.Results = results
}
logger.Debug("preflight marshalling")
b, err := json.Marshal(uploadPreflightResults)
if err != nil {
return uploadPreflightResults, errors.Wrap(err, "failed to marshal results")
}
completeMx.Lock()
defer completeMx.Unlock()
isComplete = true
if err := store.GetStore().SetPreflightResults(appID, sequence, b); err != nil {
return uploadPreflightResults, errors.Wrap(err, "failed to set preflight results")
}
return uploadPreflightResults, nil
}
func isPermissionsError(err error) bool {
// TODO: make an error type in troubleshoot for this instead of hardcoding the message
if err == nil {
return false
}
return strings.Contains(err.Error(), "insufficient permissions to run all collectors")
}