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registry.go
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registry.go
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package analyzer
import (
"encoding/json"
"fmt"
"path"
"strconv"
"strings"
"github.com/pkg/errors"
troubleshootv1beta2 "github.com/replicatedhq/troubleshoot/pkg/apis/troubleshoot/v1beta2"
"github.com/replicatedhq/troubleshoot/pkg/collect"
)
type AnalyzeRegistryImages struct {
analyzer *troubleshootv1beta2.RegistryImagesAnalyze
}
func (a *AnalyzeRegistryImages) Title() string {
title := a.analyzer.CheckName
if title == "" {
title = a.collectorName()
}
return title
}
func (a *AnalyzeRegistryImages) collectorName() string {
collectorName := a.analyzer.CollectorName
if collectorName == "" {
collectorName = "images"
}
return collectorName
}
func (a *AnalyzeRegistryImages) IsExcluded() (bool, error) {
return isExcluded(a.analyzer.Exclude)
}
func (a *AnalyzeRegistryImages) Analyze(getFile getCollectedFileContents, findFiles getChildCollectedFileContents) ([]*AnalyzeResult, error) {
result, err := a.analyzeRegistry(a.analyzer, getFile)
if err != nil {
return nil, err
}
result.Strict = a.analyzer.Strict.BoolOrDefaultFalse()
return []*AnalyzeResult{result}, nil
}
func (a *AnalyzeRegistryImages) analyzeRegistry(analyzer *troubleshootv1beta2.RegistryImagesAnalyze, getCollectedFileContents func(string) ([]byte, error)) (*AnalyzeResult, error) {
fullPath := path.Join("registry", fmt.Sprintf("%s.json", a.collectorName()))
collected, err := getCollectedFileContents(fullPath)
if err != nil {
return nil, errors.Wrapf(err, "failed to read collected file name: %s", fullPath)
}
registryInfo := collect.RegistryInfo{}
if err := json.Unmarshal(collected, ®istryInfo); err != nil {
return nil, errors.Wrap(err, "failed to unmarshal database connection result")
}
numMissingImages := 0
numVerifiedImages := 0
numErrors := 0
for _, image := range registryInfo.Images {
if image.Error != "" {
numErrors++
} else if !image.Exists {
numMissingImages++
} else {
numVerifiedImages++
}
}
result := &AnalyzeResult{
Title: a.Title(),
IconKey: "kubernetes_registry_analyze",
IconURI: "https://troubleshoot.sh/images/analyzer-icons/registry-analyze.svg",
}
for _, outcome := range analyzer.Outcomes {
if outcome.Fail != nil {
if outcome.Fail.When == "" {
result.IsFail = true
result.Message = outcome.Fail.Message
result.URI = outcome.Fail.URI
return result, nil
}
isMatch, err := compareRegistryConditionalToActual(outcome.Fail.When, numVerifiedImages, numMissingImages, numErrors)
if err != nil {
return result, errors.Wrap(err, "failed to compare registry conditional")
}
if isMatch {
result.IsFail = true
result.Message = outcome.Fail.Message
result.URI = outcome.Fail.URI
return result, nil
}
} else if outcome.Warn != nil {
if outcome.Warn.When == "" {
result.IsWarn = true
result.Message = outcome.Warn.Message
result.URI = outcome.Warn.URI
return result, nil
}
isMatch, err := compareRegistryConditionalToActual(outcome.Warn.When, numVerifiedImages, numMissingImages, numErrors)
if err != nil {
return result, errors.Wrap(err, "failed to compare registry conditional")
}
if isMatch {
result.IsWarn = true
result.Message = outcome.Warn.Message
result.URI = outcome.Warn.URI
return result, nil
}
} else if outcome.Pass != nil {
if outcome.Pass.When == "" {
result.IsPass = true
result.Message = outcome.Pass.Message
result.URI = outcome.Pass.URI
return result, nil
}
isMatch, err := compareRegistryConditionalToActual(outcome.Pass.When, numVerifiedImages, numMissingImages, numErrors)
if err != nil {
return result, errors.Wrap(err, "failed to compare registry conditional")
}
if isMatch {
result.IsPass = true
result.Message = outcome.Pass.Message
result.URI = outcome.Pass.URI
return result, nil
}
}
}
return result, nil
}
func compareRegistryConditionalToActual(conditional string, numVerifiedImages int, numMissingImages int, numErrors int) (bool, error) {
parts := strings.Split(strings.TrimSpace(conditional), " ")
if len(parts) != 3 {
return false, errors.Errorf("unable to parse conditional: %s", conditional)
}
switch parts[0] {
case "verified":
result, err := doCompareRegistryImageCount(parts[1], parts[2], numVerifiedImages)
if err != nil {
return false, errors.Wrap(err, "failed to compare number of verified images")
}
return result, nil
case "missing":
result, err := doCompareRegistryImageCount(parts[1], parts[2], numMissingImages)
if err != nil {
return false, errors.Wrap(err, "failed to compare number of missing images")
}
return result, nil
case "errors":
result, err := doCompareRegistryImageCount(parts[1], parts[2], numErrors)
if err != nil {
return false, errors.Wrap(err, "failed to compare number of errors")
}
return result, nil
}
return false, errors.Errorf("unknown term %q in conditional", parts[0])
}
func doCompareRegistryImageCount(operator string, desired string, actual int) (bool, error) {
desiredInt, err := strconv.Atoi(desired)
if err != nil {
return false, errors.Wrap(err, "failed to parse")
}
switch operator {
case "<":
return actual < desiredInt, nil
case "<=":
return actual <= desiredInt, nil
case ">":
return actual > desiredInt, nil
case ">=":
return actual >= desiredInt, nil
case "=", "==", "===":
return actual == desiredInt, nil
}
return false, errors.Errorf("unknown operator: %s", operator)
}