kubernetes/test/e2e_node/remote/cadvisor_e2e.go
Patrick Ohly 136f89dfc5 e2e: use error wrapping with %w
The recently introduced failure handling in ExpectNoError depends on error
wrapping: if an error prefix gets added with `fmt.Errorf("foo: %v", err)`, then
ExpectNoError cannot detect that the root cause is an assertion failure and
then will add another useless "unexpected error" prefix and will not dump the
additional failure information (currently the backtrace inside the E2E
framework).

Instead of manually deciding on a case-by-case basis where %w is needed, all
error wrapping was updated automatically with

    sed -i "s/fmt.Errorf\(.*\): '*\(%s\|%v\)'*\",\(.* err)\)/fmt.Errorf\1: %w\",\3/" $(git grep -l 'fmt.Errorf' test/e2e*)

This may be unnecessary in some cases, but it's not wrong.
2023-02-06 15:39:13 +01:00

77 lines
2.2 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 remote
import (
"fmt"
"os"
"os/exec"
"time"
"k8s.io/klog/v2"
"k8s.io/kubernetes/test/utils"
)
// CAdvisorE2ERemote contains the specific functions in the cadvisor e2e test suite.
type CAdvisorE2ERemote struct{}
// InitCAdvisorE2ERemote performs initialization for cadvisor remote testing
func InitCAdvisorE2ERemote() TestSuite {
return &CAdvisorE2ERemote{}
}
// SetupTestPackage implements TestSuite.SetupTestPackage
func (n *CAdvisorE2ERemote) SetupTestPackage(tardir, systemSpecName string) error {
cadvisorRootDir, err := utils.GetCAdvisorRootDir()
if err != nil {
return err
}
// build the cadvisor binary and tests
if err := runCommand(fmt.Sprintf("%s/build/prow_e2e.sh", cadvisorRootDir)); err != nil {
return err
}
// transfer the entire directory to each node
if err := runCommand("cp", "-R", cadvisorRootDir, fmt.Sprintf("%s/", tardir)); err != nil {
return err
}
return nil
}
func runCommand(command string, args ...string) error {
cmd := exec.Command(command, args...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
err := cmd.Run()
if err != nil {
return fmt.Errorf("failed to run command %s. error: %w", command, err)
}
return nil
}
// RunTest implements TestSuite.RunTest
func (n *CAdvisorE2ERemote) RunTest(host, workspace, _, _, _, _, _, _, _, _ string, timeout time.Duration) (string, error) {
// Kill any running node processes
cleanupNodeProcesses(host)
klog.V(2).Infof("Starting tests on %q", host)
return SSH(host, "sh", "-c", getSSHCommand(" && ",
fmt.Sprintf("cd %s/cadvisor", workspace),
fmt.Sprintf("timeout -k 30s %fs ./build/integration.sh ../results/cadvisor.log",
timeout.Seconds()),
))
}