cloudflare/pint
Publicmirrored from https://github.com/cloudflare/pintAvailable
internal/promapi/errors.go
52lines · modecode
| 1 | package promapi |
| 2 | |
| 3 | import ( |
| 4 | "errors" |
| 5 | "net" |
| 6 | "strings" |
| 7 | "syscall" |
| 8 | "time" |
| 9 | |
| 10 | v1 "github.com/prometheus/client_golang/api/prometheus/v1" |
| 11 | ) |
| 12 | |
| 13 | func IsUnavailableError(err error) bool { |
| 14 | var apiErr *v1.Error |
| 15 | if ok := errors.As(err, &apiErr); ok { |
| 16 | return apiErr.Type == v1.ErrServer |
| 17 | } |
| 18 | |
| 19 | return true |
| 20 | } |
| 21 | |
| 22 | func CanRetryError(err error, delta time.Duration) (time.Duration, bool) { |
| 23 | if errors.Is(err, syscall.ECONNREFUSED) { |
| 24 | return delta, false |
| 25 | } |
| 26 | |
| 27 | var neterr net.Error |
| 28 | if ok := errors.As(err, &neterr); ok && neterr.Timeout() { |
| 29 | return delta / 2, true |
| 30 | } |
| 31 | |
| 32 | var apiErr *v1.Error |
| 33 | if ok := errors.As(err, &apiErr); ok { |
| 34 | switch apiErr.Type { |
| 35 | case v1.ErrBadData: |
| 36 | case v1.ErrTimeout: |
| 37 | return delta / 2, true |
| 38 | case v1.ErrCanceled: |
| 39 | case v1.ErrExec: |
| 40 | if strings.Contains(apiErr.Msg, "query processing would load too many samples into memory in ") { |
| 41 | return (delta / 4) * 3, true |
| 42 | } |
| 43 | return delta / 2, true |
| 44 | case v1.ErrBadResponse: |
| 45 | case v1.ErrServer: |
| 46 | case v1.ErrClient: |
| 47 | return delta / 2, true |
| 48 | } |
| 49 | } |
| 50 | |
| 51 | return delta, false |
| 52 | } |
| 53 | |