107 lines
3.6 KiB
Go
107 lines
3.6 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package oci
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import (
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"errors"
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"os/exec"
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"strings"
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"github.com/golang/glog"
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)
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// FailFastError type is an error that could not be solved by trying again
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type FailFastError struct {
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Err error
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}
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func (f *FailFastError) Error() string {
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return f.Err.Error()
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}
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// ErrWindowsContainers is thrown when docker been configured to run windows containers instead of Linux
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var ErrWindowsContainers = &FailFastError{errors.New("docker container type is windows")}
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// ErrCPUCountLimit is thrown when docker daemon doesn't have enough CPUs for the requested container
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var ErrCPUCountLimit = &FailFastError{errors.New("not enough CPUs is available for container")}
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// ErrExitedUnexpectedly is thrown when container is created/started without error but later it exists and it's status is not running anymore.
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var ErrExitedUnexpectedly = errors.New("container exited unexpectedly")
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// ErrDaemonInfo is thrown when docker/podman info is failing or not responding
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var ErrDaemonInfo = errors.New("daemon info not responding")
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// ErrInsufficientDockerStorage is thrown when there is not more storage for docker
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var ErrInsufficientDockerStorage = &FailFastError{errors.New("insufficient docker storage, no space left on device")}
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// LogContainerDebug will print relevant docker/podman infos after a container fails
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func LogContainerDebug(ociBin string, name string) string {
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rr, err := containerInspect(ociBin, name)
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if err != nil {
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glog.Warningf("Filed to get postmortem inspect. %s :%v", rr.Command(), err)
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} else {
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glog.Infof("Postmortem inspect (%q): %s", rr.Command(), rr.Output())
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}
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rr, err = containerLogs(ociBin, name)
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if err != nil {
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glog.Warningf("Filed to get postmortem logs. %s :%v", rr.Command(), err)
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} else {
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glog.Infof("Postmortem logs (%q): %s", rr.Command(), rr.Output())
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}
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if ociBin == Docker {
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di, err := dockerSystemInfo()
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if err != nil {
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glog.Warningf("Failed to get postmortem docker info: %v", err)
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} else {
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glog.Infof("postmortem docker info: %+v", di)
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}
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} else {
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pi, err := podmanSystemInfo()
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if err != nil {
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glog.Warningf("couldn't get postmortem info, failed to to run podman info: %v", err)
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} else {
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glog.Infof("postmortem podman info: %+v", pi)
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}
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}
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if rr.Stdout.Len() == 0 {
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return ""
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}
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// If available, return an excerpt of the post-mortem logs for inclusion in error message
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excerpt := strings.Split(strings.TrimSpace(rr.Stdout.String()), "\n")
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if len(excerpt) > 4 {
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excerpt = excerpt[len(excerpt)-4:]
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}
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return strings.Join(excerpt, "\n")
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}
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// containerLogs will return out the logs for a container
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func containerLogs(ociBin string, name string) (*RunResult, error) {
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if ociBin == Docker {
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return runCmd(exec.Command(ociBin, "logs", "--timestamps", "--details", name))
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}
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// podman doesn't have --details
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return runCmd(exec.Command(ociBin, "logs", "--timestamps", name))
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}
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// containerInspect will return the inspect for a container
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func containerInspect(ociBin string, name string) (*RunResult, error) {
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return runCmd(exec.Command(ociBin, "inspect", name))
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}
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