mirror of
https://github.com/kubernetes/client-go.git
synced 2025-06-19 11:52:03 +00:00
ef1d5d2691
These were missed because our tests did not pass in the correct test data input (the command to execute). Signed-off-by: Monis Khan <mok@vmware.com> Kubernetes-commit: a6ac42082b4d7c0057b52900736bd7fbc2c44241
112 lines
3.6 KiB
Go
112 lines
3.6 KiB
Go
/*
|
|
Copyright 2018 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package exec
|
|
|
|
import (
|
|
"errors"
|
|
"io/fs"
|
|
"os/exec"
|
|
"reflect"
|
|
"sync"
|
|
"time"
|
|
|
|
"k8s.io/klog/v2"
|
|
|
|
"k8s.io/client-go/tools/metrics"
|
|
)
|
|
|
|
// The following constants shadow the special values used in the prometheus metrics implementation.
|
|
const (
|
|
// noError indicates that the plugin process was successfully started and exited with an exit
|
|
// code of 0.
|
|
noError = "no_error"
|
|
// pluginExecutionError indicates that the plugin process was successfully started and then
|
|
// it returned a non-zero exit code.
|
|
pluginExecutionError = "plugin_execution_error"
|
|
// pluginNotFoundError indicates that we could not find the exec plugin.
|
|
pluginNotFoundError = "plugin_not_found_error"
|
|
// clientInternalError indicates that we attempted to start the plugin process, but failed
|
|
// for some reason.
|
|
clientInternalError = "client_internal_error"
|
|
|
|
// successExitCode represents an exec plugin invocation that was successful.
|
|
successExitCode = 0
|
|
// failureExitCode represents an exec plugin invocation that was not successful. This code is
|
|
// used in some failure modes (e.g., plugin not found, client internal error) so that someone
|
|
// can more easily monitor all unsuccessful invocations.
|
|
failureExitCode = 1
|
|
)
|
|
|
|
type certificateExpirationTracker struct {
|
|
mu sync.RWMutex
|
|
m map[*Authenticator]time.Time
|
|
metricSet func(*time.Time)
|
|
}
|
|
|
|
var expirationMetrics = &certificateExpirationTracker{
|
|
m: map[*Authenticator]time.Time{},
|
|
metricSet: func(e *time.Time) {
|
|
metrics.ClientCertExpiry.Set(e)
|
|
},
|
|
}
|
|
|
|
// set stores the given expiration time and updates the updates the certificate
|
|
// expiry metric to the earliest expiration time.
|
|
func (c *certificateExpirationTracker) set(a *Authenticator, t time.Time) {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
c.m[a] = t
|
|
|
|
earliest := time.Time{}
|
|
for _, t := range c.m {
|
|
if t.IsZero() {
|
|
continue
|
|
}
|
|
if earliest.IsZero() || earliest.After(t) {
|
|
earliest = t
|
|
}
|
|
}
|
|
if earliest.IsZero() {
|
|
c.metricSet(nil)
|
|
} else {
|
|
c.metricSet(&earliest)
|
|
}
|
|
}
|
|
|
|
// incrementCallsMetric increments a global metrics counter for the number of calls to an exec
|
|
// plugin, partitioned by exit code. The provided err should be the return value from
|
|
// exec.Cmd.Run().
|
|
func incrementCallsMetric(err error) {
|
|
execExitError := &exec.ExitError{}
|
|
execError := &exec.Error{}
|
|
pathError := &fs.PathError{}
|
|
switch {
|
|
case err == nil: // Binary execution succeeded.
|
|
metrics.ExecPluginCalls.Increment(successExitCode, noError)
|
|
|
|
case errors.As(err, &execExitError): // Binary execution failed (see "os/exec".Cmd.Run()).
|
|
metrics.ExecPluginCalls.Increment(execExitError.ExitCode(), pluginExecutionError)
|
|
|
|
case errors.As(err, &execError), errors.As(err, &pathError): // Binary does not exist (see exec.Error, fs.PathError).
|
|
metrics.ExecPluginCalls.Increment(failureExitCode, pluginNotFoundError)
|
|
|
|
default: // We don't know about this error type.
|
|
klog.V(2).InfoS("unexpected exec plugin return error type", "type", reflect.TypeOf(err).String(), "err", err)
|
|
metrics.ExecPluginCalls.Increment(failureExitCode, clientInternalError)
|
|
}
|
|
}
|