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common_status.go
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/
common_status.go
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package analyzer
import (
"fmt"
"github.com/pkg/errors"
troubleshootv1beta2 "github.com/replicatedhq/troubleshoot/pkg/apis/troubleshoot/v1beta2"
"strconv"
"strings"
)
func commonStatus(outcomes []*troubleshootv1beta2.Outcome, name string, iconKey string, iconURI string, readyReplicas int, exists bool, resourceType string) (*AnalyzeResult, error) {
result := &AnalyzeResult{
Title: fmt.Sprintf("%s Status", name),
IconKey: iconKey,
IconURI: iconURI,
}
// ordering from the spec is important, the first one that matches returns
for _, outcome := range outcomes {
if outcome.Fail != nil {
// if we're not checking that something is absent but it is, we should throw a default but meaningful error.
if exists == false && outcome.Fail.When != "absent" {
result.IsFail = true
result.Message = fmt.Sprintf("The %s %q was not found", resourceType, name)
result.URI = outcome.Fail.URI
return result, nil
}
if outcome.Fail.When == "" {
result.IsFail = true
result.Message = outcome.Fail.Message
result.URI = outcome.Fail.URI
return result, nil
}
if outcome.Fail.When == "absent" {
if exists == false {
result.IsFail = true
result.Message = outcome.Fail.Message
result.URI = outcome.Fail.URI
return result, nil
} else {
continue
}
}
match, err := compareActualToWhen(outcome.Fail.When, readyReplicas, exists)
if err != nil {
return nil, errors.Wrap(err, "failed to parse fail range")
}
if match {
result.IsFail = true
result.Message = outcome.Fail.Message
result.URI = outcome.Fail.URI
return result, nil
}
} else if outcome.Warn != nil {
if exists == false && outcome.Warn.When != "absent" {
result.IsFail = true
result.Message = fmt.Sprintf("The %s %q was not found", resourceType, name)
result.URI = outcome.Fail.URI
return result, nil
}
if outcome.Warn.When == "" {
result.IsWarn = true
result.Message = outcome.Warn.Message
result.URI = outcome.Warn.URI
return result, nil
}
if outcome.Warn.When == "absent" {
if exists == false {
result.IsWarn = true
result.Message = outcome.Warn.Message
result.URI = outcome.Warn.URI
return result, nil
} else {
continue
}
}
match, err := compareActualToWhen(outcome.Warn.When, readyReplicas, exists)
if err != nil {
return nil, errors.Wrap(err, "failed to parse warn range")
}
if match {
result.IsWarn = true
result.Message = outcome.Warn.Message
result.URI = outcome.Warn.URI
return result, nil
}
} else if outcome.Pass != nil {
if exists == false && outcome.Pass.When != "absent" {
result.IsFail = true
result.Message = fmt.Sprintf("The %s %q was not found", resourceType, name)
result.URI = outcome.Fail.URI
return result, nil
}
if outcome.Pass.When == "" {
result.IsPass = true
result.Message = outcome.Pass.Message
result.URI = outcome.Pass.URI
return result, nil
}
if outcome.Pass.When == "absent" {
if exists == false {
result.IsPass = true
result.Message = outcome.Pass.Message
result.URI = outcome.Pass.URI
return result, nil
} else {
continue
}
}
match, err := compareActualToWhen(outcome.Pass.When, readyReplicas, exists)
if err != nil {
return nil, errors.Wrap(err, "failed to parse pass range")
}
if match {
result.IsPass = true
result.Message = outcome.Pass.Message
result.URI = outcome.Pass.URI
return result, nil
}
}
}
return result, nil
}
func compareActualToWhen(when string, actual int, exists bool) (bool, error) {
parts := strings.Split(strings.TrimSpace(when), " ")
// we can make this a lot more flexible
if len(parts) != 2 {
return false, errors.New("unable to parse when range")
}
value, err := strconv.Atoi(parts[1])
if err != nil {
return false, errors.Wrap(err, "failed to parse when value")
}
switch parts[0] {
case "=":
fallthrough
case "==":
fallthrough
case "===":
return actual == value, nil
case "<":
return actual < value, nil
case ">":
return actual > value, nil
case "<=":
return actual <= value, nil
case ">=":
return actual >= value, nil
}
return false, errors.Errorf("unknown comparator: %q", parts[0])
}