Golang container.IsHostNetworkPod函數代碼示例

// generatePodSandboxConfig generates pod sandbox config from api.Pod.
func (m *kubeGenericRuntimeManager) generatePodSandboxConfig(pod *api.Pod, podIP string) (*runtimeApi.PodSandboxConfig, error) {
	sandboxName := buildSandboxName(pod)
	// TODO: deprecating podsandbox resource requirements in favor of the pod level cgroup
	// Refer https://github.com/kubernetes/kubernetes/issues/29871
	podSandboxConfig := &runtimeApi.PodSandboxConfig{
		Name:        &sandboxName,
		Labels:      newPodLabels(pod),
		Annotations: newPodAnnotations(pod),
	}

	if !kubecontainer.IsHostNetworkPod(pod) {
		dnsServers, dnsSearches, err := m.runtimeHelper.GetClusterDNS(pod)
		if err != nil {
			return nil, err
		}
		podSandboxConfig.DnsOptions = &runtimeApi.DNSOption{
			Servers:  dnsServers,
			Searches: dnsSearches,
		}
		// TODO: Add domain support in new runtime interface
		hostname, _, err := m.runtimeHelper.GeneratePodHostNameAndDomain(pod)
		if err != nil {
			return nil, err
		}
		podSandboxConfig.Hostname = &hostname
	}

	cgroupParent := ""
	portMappings := []*runtimeApi.PortMapping{}
	for _, c := range pod.Spec.Containers {
		opts, err := m.runtimeHelper.GenerateRunContainerOptions(pod, &c, podIP)
		if err != nil {
			return nil, err
		}

		for idx := range opts.PortMappings {
			port := opts.PortMappings[idx]
			hostPort := int32(port.HostPort)
			containerPort := int32(port.ContainerPort)
			protocol := toRuntimeProtocol(port.Protocol)
			portMappings = append(portMappings, &runtimeApi.PortMapping{
				HostIp:        &port.HostIP,
				HostPort:      &hostPort,
				ContainerPort: &containerPort,
				Protocol:      &protocol,
				Name:          &port.Name,
			})
		}

		// TODO: refactor kubelet to get cgroup parent for pod instead of containers
		cgroupParent = opts.CgroupParent
	}
	podSandboxConfig.Linux = generatePodSandboxLinuxConfig(pod, cgroupParent)
	if len(portMappings) > 0 {
		podSandboxConfig.PortMappings = portMappings
	}

	return podSandboxConfig, nil
}

// generatePodSandboxConfig generates pod sandbox config from v1.Pod.
func (m *kubeGenericRuntimeManager) generatePodSandboxConfig(pod *v1.Pod, attempt uint32) (*runtimeapi.PodSandboxConfig, error) {
	// TODO: deprecating podsandbox resource requirements in favor of the pod level cgroup
	// Refer https://github.com/kubernetes/kubernetes/issues/29871
	podUID := string(pod.UID)
	podSandboxConfig := &runtimeapi.PodSandboxConfig{
		Metadata: &runtimeapi.PodSandboxMetadata{
			Name:      &pod.Name,
			Namespace: &pod.Namespace,
			Uid:       &podUID,
			Attempt:   &attempt,
		},
		Labels:      newPodLabels(pod),
		Annotations: newPodAnnotations(pod),
	}

	if !kubecontainer.IsHostNetworkPod(pod) {
		dnsServers, dnsSearches, err := m.runtimeHelper.GetClusterDNS(pod)
		if err != nil {
			return nil, err
		}
		podSandboxConfig.DnsConfig = &runtimeapi.DNSConfig{
			Servers:  dnsServers,
			Searches: dnsSearches,
			Options:  defaultDNSOptions,
		}
		// TODO: Add domain support in new runtime interface
		hostname, _, err := m.runtimeHelper.GeneratePodHostNameAndDomain(pod)
		if err != nil {
			return nil, err
		}
		podSandboxConfig.Hostname = &hostname
	}

	logDir := buildPodLogsDirectory(pod.UID)
	podSandboxConfig.LogDirectory = &logDir

	cgroupParent := ""
	portMappings := []*runtimeapi.PortMapping{}
	for _, c := range pod.Spec.Containers {
		// TODO: use a separate interface to only generate portmappings
		opts, err := m.runtimeHelper.GenerateRunContainerOptions(pod, &c, "")
		if err != nil {
			return nil, err
		}

		for idx := range opts.PortMappings {
			port := opts.PortMappings[idx]
			hostPort := int32(port.HostPort)
			containerPort := int32(port.ContainerPort)
			protocol := toRuntimeProtocol(port.Protocol)
			portMappings = append(portMappings, &runtimeapi.PortMapping{
				HostIp:        &port.HostIP,
				HostPort:      &hostPort,
				ContainerPort: &containerPort,
				Protocol:      &protocol,
			})
		}

		// TODO: refactor kubelet to get cgroup parent for pod instead of containers
		cgroupParent = opts.CgroupParent
	}
	podSandboxConfig.Linux = m.generatePodSandboxLinuxConfig(pod, cgroupParent)
	if len(portMappings) > 0 {
		podSandboxConfig.PortMappings = portMappings
	}

	return podSandboxConfig, nil
}