1d592e4c28
All external types that are not int64 are now marked as int32, including IntOrString. Prober is now int32 (43 years should be enough of an initial probe time for anyone). Did not change the metadata fields for now.
113 lines
3.6 KiB
Go
113 lines
3.6 KiB
Go
/*
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Copyright 2014 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 lifecycle
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import (
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"fmt"
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"net"
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"strconv"
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"github.com/golang/glog"
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"k8s.io/kubernetes/pkg/api"
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kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
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kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
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"k8s.io/kubernetes/pkg/util/intstr"
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)
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type HandlerRunner struct {
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httpGetter kubetypes.HttpGetter
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commandRunner kubecontainer.ContainerCommandRunner
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containerManager podStatusProvider
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}
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type podStatusProvider interface {
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GetPodStatus(pod *api.Pod) (*api.PodStatus, error)
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}
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func NewHandlerRunner(httpGetter kubetypes.HttpGetter, commandRunner kubecontainer.ContainerCommandRunner, containerManager podStatusProvider) kubecontainer.HandlerRunner {
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return &HandlerRunner{
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httpGetter: httpGetter,
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commandRunner: commandRunner,
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containerManager: containerManager,
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}
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}
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func (hr *HandlerRunner) Run(containerID kubecontainer.ContainerID, pod *api.Pod, container *api.Container, handler *api.Handler) error {
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switch {
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case handler.Exec != nil:
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_, err := hr.commandRunner.RunInContainer(containerID, handler.Exec.Command)
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return err
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case handler.HTTPGet != nil:
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return hr.runHTTPHandler(pod, container, handler)
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default:
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err := fmt.Errorf("Invalid handler: %v", handler)
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glog.Errorf("Cannot run handler: %v", err)
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return err
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}
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}
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// resolvePort attempts to turn a IntOrString port reference into a concrete port number.
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// If portReference has an int value, it is treated as a literal, and simply returns that value.
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// If portReference is a string, an attempt is first made to parse it as an integer. If that fails,
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// an attempt is made to find a port with the same name in the container spec.
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// If a port with the same name is found, it's ContainerPort value is returned. If no matching
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// port is found, an error is returned.
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func resolvePort(portReference intstr.IntOrString, container *api.Container) (int, error) {
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if portReference.Type == intstr.Int {
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return portReference.IntValue(), nil
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}
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portName := portReference.StrVal
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port, err := strconv.Atoi(portName)
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if err == nil {
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return port, nil
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}
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for _, portSpec := range container.Ports {
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if portSpec.Name == portName {
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return portSpec.ContainerPort, nil
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}
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}
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return -1, fmt.Errorf("couldn't find port: %v in %v", portReference, container)
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}
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func (hr *HandlerRunner) runHTTPHandler(pod *api.Pod, container *api.Container, handler *api.Handler) error {
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host := handler.HTTPGet.Host
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if len(host) == 0 {
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status, err := hr.containerManager.GetPodStatus(pod)
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if err != nil {
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glog.Errorf("Unable to get pod info, event handlers may be invalid.")
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return err
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}
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if status.PodIP == "" {
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return fmt.Errorf("failed to find networking container: %v", status)
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}
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host = status.PodIP
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}
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var port int
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if handler.HTTPGet.Port.Type == intstr.String && len(handler.HTTPGet.Port.StrVal) == 0 {
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port = 80
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} else {
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var err error
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port, err = resolvePort(handler.HTTPGet.Port, container)
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if err != nil {
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return err
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}
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}
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url := fmt.Sprintf("http://%s/%s", net.JoinHostPort(host, strconv.Itoa(port)), handler.HTTPGet.Path)
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_, err := hr.httpGetter.Get(url)
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return err
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}
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