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api/v2: add path and method to API v2 logs (#2261) 

* api/v2: add path and method to API v2 logs

When an API v2 handler logged a message, the log wouldn't include the
path and method. Since different handlers perform the same validations
(e.g. matchers for alerts and silences), it isn't easy to know which
handler was invoked (though the logged filename
+ line number provides a hint).

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

* Capitalize messages + improve logs

Signed-off-by: Simon Pasquier <spasquie@redhat.com>
This commit is contained in:
Simon Pasquier 2020-06-02 16:13:31 +02:00 committed by GitHub
parent 97bd078441
commit e0cc523893
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 44 additions and 30 deletions
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65
api/v2/api.go
View File

@ -98,13 +98,13 @@ func NewAPI(
uptime: time.Now(),
}
// load embedded swagger file
// Load embedded swagger file.
swaggerSpec, err := loads.Analyzed(restapi.SwaggerJSON, "")
if err != nil {
return nil, fmt.Errorf("failed to load embedded swagger file: %v", err.Error())
}
// create new service API
// Create new service API.
openAPI := operations.NewAlertmanagerAPI(swaggerSpec)
// Skip the redoc middleware, only serving the OpenAPI specification and
@ -124,14 +124,16 @@ func NewAPI(
openAPI.SilenceGetSilencesHandler = silence_ops.GetSilencesHandlerFunc(api.getSilencesHandler)
openAPI.SilencePostSilencesHandler = silence_ops.PostSilencesHandlerFunc(api.postSilencesHandler)
openAPI.Logger = func(s string, i ...interface{}) { level.Error(api.logger).Log(i...) }
handleCORS := cors.Default().Handler
api.Handler = handleCORS(openAPI.Serve(nil))
return &api, nil
}
func (api *API) requestLogger(req *http.Request) log.Logger {
return log.With(api.logger, "path", req.URL.Path, "method", req.Method)
}
// Update sets the API struct members that may change between reloads of alertmanager.
func (api *API) Update(cfg *config.Config, setAlertStatus setAlertStatusFn) {
api.mtx.Lock()
@ -216,18 +218,20 @@ func (api *API) getAlertsHandler(params alert_ops.GetAlertsParams) middleware.Re
// are no alerts present
res = open_api_models.GettableAlerts{}
ctx = params.HTTPRequest.Context()
logger = api.requestLogger(params.HTTPRequest)
)
matchers, err := parseFilter(params.Filter)
if err != nil {
level.Error(api.logger).Log("msg", "failed to parse matchers", "err", err)
level.Error(logger).Log("msg", "Failed to parse matchers", "err", err)
return alertgroup_ops.NewGetAlertGroupsBadRequest().WithPayload(err.Error())
}
if params.Receiver != nil {
receiverFilter, err = regexp.Compile("^(?:" + *params.Receiver + ")$")
if err != nil {
level.Error(api.logger).Log("msg", "failed to compile receiver regex", "err", err)
level.Error(logger).Log("msg", "Failed to compile receiver regex", "err", err)
return alert_ops.
NewGetAlertsBadRequest().
WithPayload(
@ -272,7 +276,7 @@ func (api *API) getAlertsHandler(params alert_ops.GetAlertsParams) middleware.Re
api.mtx.RUnlock()
if err != nil {
level.Error(api.logger).Log("msg", "failed to get alerts", "err", err)
level.Error(logger).Log("msg", "Failed to get alerts", "err", err)
return alert_ops.NewGetAlertsInternalServerError().WithPayload(err.Error())
}
sort.Slice(res, func(i, j int) bool {
@ -283,6 +287,8 @@ func (api *API) getAlertsHandler(params alert_ops.GetAlertsParams) middleware.Re
}
func (api *API) postAlertsHandler(params alert_ops.PostAlertsParams) middleware.Responder {
logger := api.requestLogger(params.HTTPRequest)
alerts := openAPIAlertsToAlerts(params.Alerts)
now := time.Now()
@ -330,12 +336,12 @@ func (api *API) postAlertsHandler(params alert_ops.PostAlertsParams) middleware.
validAlerts = append(validAlerts, a)
}
if err := api.alerts.Put(validAlerts...); err != nil {
level.Error(api.logger).Log("msg", "failed to create alerts", "err", err)
level.Error(logger).Log("msg", "Failed to create alerts", "err", err)
return alert_ops.NewPostAlertsInternalServerError().WithPayload(err.Error())
}
if validationErrs.Len() > 0 {
level.Error(api.logger).Log("msg", "failed to validate alerts", "err", validationErrs.Error())
level.Error(logger).Log("msg", "Failed to validate alerts", "err", validationErrs.Error())
return alert_ops.NewPostAlertsBadRequest().WithPayload(validationErrs.Error())
}
@ -343,18 +349,19 @@ func (api *API) postAlertsHandler(params alert_ops.PostAlertsParams) middleware.
}
func (api *API) getAlertGroupsHandler(params alertgroup_ops.GetAlertGroupsParams) middleware.Responder {
var receiverFilter *regexp.Regexp
logger := api.requestLogger(params.HTTPRequest)
matchers, err := parseFilter(params.Filter)
if err != nil {
level.Error(api.logger).Log("msg", "failed to parse matchers", "err", err)
level.Error(logger).Log("msg", "Failed to parse matchers", "err", err)
return alertgroup_ops.NewGetAlertGroupsBadRequest().WithPayload(err.Error())
}
var receiverFilter *regexp.Regexp
if params.Receiver != nil {
receiverFilter, err = regexp.Compile("^(?:" + *params.Receiver + ")$")
if err != nil {
level.Error(api.logger).Log("msg", "failed to compile receiver regex", "err", err)
level.Error(logger).Log("msg", "Failed to compile receiver regex", "err", err)
return alertgroup_ops.
NewGetAlertGroupsBadRequest().
WithPayload(
@ -554,12 +561,14 @@ func matchFilterLabels(matchers []*labels.Matcher, sms map[string]string) bool {
}
func (api *API) getSilencesHandler(params silence_ops.GetSilencesParams) middleware.Responder {
logger := api.requestLogger(params.HTTPRequest)
matchers := []*labels.Matcher{}
if params.Filter != nil {
for _, matcherString := range params.Filter {
matcher, err := labels.ParseMatcher(matcherString)
if err != nil {
level.Error(api.logger).Log("msg", "failed to parse matchers", "err", err)
level.Error(logger).Log("msg", "Failed to parse matchers", "err", err)
return alert_ops.NewGetAlertsBadRequest().WithPayload(err.Error())
}
@ -569,7 +578,7 @@ func (api *API) getSilencesHandler(params silence_ops.GetSilencesParams) middlew
psils, _, err := api.silences.Query()
if err != nil {
level.Error(api.logger).Log("msg", "failed to get silences", "err", err)
level.Error(logger).Log("msg", "Failed to get silences", "err", err)
return silence_ops.NewGetSilencesInternalServerError().WithPayload(err.Error())
}
@ -577,7 +586,7 @@ func (api *API) getSilencesHandler(params silence_ops.GetSilencesParams) middlew
for _, ps := range psils {
silence, err := gettableSilenceFromProto(ps)
if err != nil {
level.Error(api.logger).Log("msg", "failed to unmarshal silence from proto", "err", err)
level.Error(logger).Log("msg", "Failed to unmarshal silence from proto", "err", err)
return silence_ops.NewGetSilencesInternalServerError().WithPayload(err.Error())
}
if !gettableSilenceMatchesFilterLabels(silence, matchers) {
@ -639,20 +648,22 @@ func gettableSilenceMatchesFilterLabels(s open_api_models.GettableSilence, match
}
func (api *API) getSilenceHandler(params silence_ops.GetSilenceParams) middleware.Responder {
logger := api.requestLogger(params.HTTPRequest)
sils, _, err := api.silences.Query(silence.QIDs(params.SilenceID.String()))
if err != nil {
level.Error(api.logger).Log("msg", "failed to get silence by id", "err", err)
level.Error(logger).Log("msg", "Failed to get silence by id", "err", err, "id", params.SilenceID.String())
return silence_ops.NewGetSilenceInternalServerError().WithPayload(err.Error())
}
if len(sils) == 0 {
level.Error(api.logger).Log("msg", "failed to find silence", "err", err)
level.Error(logger).Log("msg", "Failed to find silence", "err", err, "id", params.SilenceID.String())
return silence_ops.NewGetSilenceNotFound()
}
sil, err := gettableSilenceFromProto(sils[0])
if err != nil {
level.Error(api.logger).Log("msg", "failed to convert unmarshal from proto", "err", err)
level.Error(logger).Log("msg", "Failed to convert unmarshal from proto", "err", err)
return silence_ops.NewGetSilenceInternalServerError().WithPayload(err.Error())
}
@ -660,10 +671,11 @@ func (api *API) getSilenceHandler(params silence_ops.GetSilenceParams) middlewar
}
func (api *API) deleteSilenceHandler(params silence_ops.DeleteSilenceParams) middleware.Responder {
sid := params.SilenceID.String()
logger := api.requestLogger(params.HTTPRequest)
sid := params.SilenceID.String()
if err := api.silences.Expire(sid); err != nil {
level.Error(api.logger).Log("msg", "failed to expire silence", "err", err)
level.Error(logger).Log("msg", "Failed to expire silence", "err", err)
return silence_ops.NewDeleteSilenceInternalServerError().WithPayload(err.Error())
}
return silence_ops.NewDeleteSilenceOK()
@ -714,30 +726,31 @@ func gettableSilenceFromProto(s *silencepb.Silence) (open_api_models.GettableSil
}
func (api *API) postSilencesHandler(params silence_ops.PostSilencesParams) middleware.Responder {
logger := api.requestLogger(params.HTTPRequest)
sil, err := postableSilenceToProto(params.Silence)
if err != nil {
level.Error(api.logger).Log("msg", "failed to marshal silence to proto", "err", err)
level.Error(logger).Log("msg", "Failed to marshal silence to proto", "err", err)
return silence_ops.NewPostSilencesBadRequest().WithPayload(
fmt.Sprintf("failed to convert API silence to internal silence: %v", err.Error()),
)
}
if sil.StartsAt.After(sil.EndsAt) || sil.StartsAt.Equal(sil.EndsAt) {
msg := "failed to create silence: start time must be before end time"
level.Error(api.logger).Log("msg", msg, "err", err)
msg := "Failed to create silence: start time must be before end time"
level.Error(logger).Log("msg", msg, "starts_at", sil.StartsAt, "ends_at", sil.EndsAt)
return silence_ops.NewPostSilencesBadRequest().WithPayload(msg)
}
if sil.EndsAt.Before(time.Now()) {
msg := "failed to create silence: end time can't be in the past"
level.Error(api.logger).Log("msg", msg, "err", err)
msg := "Failed to create silence: end time can't be in the past"
level.Error(logger).Log("msg", msg, "ends_at", sil.EndsAt)
return silence_ops.NewPostSilencesBadRequest().WithPayload(msg)
}
sid, err := api.silences.Set(sil)
if err != nil {
level.Error(api.logger).Log("msg", "failed to create silence", "err", err)
level.Error(logger).Log("msg", "Failed to create silence", "err", err)
if err == silence.ErrNotFound {
return silence_ops.NewPostSilencesNotFound().WithPayload(err.Error())
}

9
pkg/labels/parse.go
View File

@ -14,9 +14,10 @@
package labels
import (
"fmt"
"regexp"
"strings"
"github.com/pkg/errors"
)
var (
@ -70,17 +71,17 @@ func ParseMatcher(s string) (*Matcher, error) {
ms := re.FindStringSubmatch(s)
if len(ms) < 4 {
return nil, fmt.Errorf("bad matcher format: %s", s)
return nil, errors.Errorf("bad matcher format: %s", s)
}
name = ms[1]
if name == "" {
return nil, fmt.Errorf("failed to parse label name")
return nil, errors.New("failed to parse label name")
}
matchType, found := typeMap[ms[2]]
if !found {
return nil, fmt.Errorf("failed to find match operator")
return nil, errors.New("failed to find match operator")
}
if ms[3] != "" {