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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/k8sutil"
"github.com/replicatedhq/kots/pkg/logger"
"github.com/replicatedhq/kots/pkg/preflight/types"
"github.com/replicatedhq/kots/pkg/store"
troubleshootanalyze "github.com/replicatedhq/troubleshoot/pkg/analyze"
troubleshootv1beta2 "github.com/replicatedhq/troubleshoot/pkg/apis/troubleshoot/v1beta2"
troubleshootcollect "github.com/replicatedhq/troubleshoot/pkg/collect"
"github.com/replicatedhq/troubleshoot/pkg/preflight"
troubleshootpreflight "github.com/replicatedhq/troubleshoot/pkg/preflight"
"go.uber.org/zap"
)
func setPreflightResult(appID string, sequence int64, preflightResults *types.PreflightResults, preflightRunError error) error {
if preflightRunError != nil {
if preflightResults.Errors == nil {
preflightResults.Errors = []*types.PreflightError{}
}
preflightResults.Errors = append(preflightResults.Errors, &types.PreflightError{
Error: preflightRunError.Error(),
IsRBAC: false,
})
}
b, err := json.Marshal(preflightResults)
if err != nil {
return errors.Wrap(err, "failed to marshal preflight results")
}
if err := store.GetStore().SetPreflightResults(appID, sequence, b); err != nil {
return errors.Wrap(err, "failed to set preflight results")
}
return nil
}
// 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) (*types.PreflightResults, error) {
logger.Info("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)
var preflightRunError error
completeMx := sync.Mutex{}
isComplete := false
go func() {
for {
msg, ok := <-progressChan
if !ok {
return
}
if err, ok := msg.(error); ok {
logger.Errorf("error while running preflights: %v", err)
} else {
switch m := msg.(type) {
case preflight.CollectProgress:
logger.Infof("preflight progress: %s", m.String())
default:
logger.Infof("preflight progress: %+v", msg)
}
}
progress, ok := msg.(preflight.CollectProgress)
if !ok {
continue
}
// TODO: We need a nice title to display
progressBytes, 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(progressBytes))
}
completeMx.Unlock()
}
}()
uploadPreflightResults := &types.PreflightResults{}
defer func() {
completeMx.Lock()
defer completeMx.Unlock()
isComplete = true
if err := setPreflightResult(appID, sequence, uploadPreflightResults, preflightRunError); err != nil {
logger.Error(errors.Wrap(err, "failed to set preflight results"))
return
}
}()
restConfig, err := k8sutil.GetClusterConfig()
if err != nil {
preflightRunError = err
return nil, errors.Wrap(err, "failed to get cluster config")
}
preflightSpec.Spec.Collectors = troubleshootcollect.DedupCollectors(preflightSpec.Spec.Collectors)
preflightSpec.Spec.Analyzers = troubleshootanalyze.DedupAnalyzers(preflightSpec.Spec.Analyzers)
collectOpts := troubleshootpreflight.CollectOpts{
Namespace: "",
IgnorePermissionErrors: ignorePermissionErrors,
ProgressChan: progressChan,
KubernetesRestConfig: restConfig,
}
logger.Info("preflight collect phase")
collectResults, err := troubleshootpreflight.Collect(collectOpts, preflightSpec)
if err != nil && !isPermissionsError(err) {
preflightRunError = err
return nil, errors.Wrap(err, "failed to collect")
}
clusterCollectResult, ok := collectResults.(troubleshootpreflight.ClusterCollectResult)
if !ok {
preflightRunError = errors.Errorf("unexpected result type: %T", collectResults)
return nil, preflightRunError
}
if isPermissionsError(err) {
logger.Debug("skipping analyze due to RBAC errors")
rbacErrors := []*types.PreflightError{}
for _, collector := range clusterCollectResult.Collectors {
for _, e := range collector.GetRBACErrors() {
rbacErrors = append(rbacErrors, &types.PreflightError{
Error: e.Error(),
IsRBAC: true,
})
}
}
uploadPreflightResults.Errors = rbacErrors
} else {
logger.Info("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{
Strict: analyzeResult.Strict,
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
}
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")
}