mirror of https://github.com/containers/podman.git
refactor api compatibility container creation to specgen
when using the compatibility layer to create containers, it used code paths to the pkg/spec which is the old implementation of containers. it is error prone and no longer being maintained. rather that fixing things in spec, migrating to specgen usage seems to make the most sense. furthermore, any fixes to the compat create will not need to be ported later. Signed-off-by: baude <bbaude@redhat.com>
This commit is contained in:
baude
parent
35b4cb1965
commit
eb91d66c4a
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@ -1,6 +1,15 @@
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package common
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import "github.com/containers/podman/v2/pkg/domain/entities"
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import (
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"fmt"
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"net"
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"strconv"
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"strings"
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"github.com/containers/podman/v2/pkg/api/handlers"
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"github.com/containers/podman/v2/pkg/domain/entities"
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"github.com/containers/podman/v2/pkg/specgen"
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)
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type ContainerCLIOpts struct {
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Annotation []string
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@ -111,3 +120,283 @@ type ContainerCLIOpts struct {
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CgroupConf []string
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}
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func stringMaptoArray(m map[string]string) []string {
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a := make([]string, 0, len(m))
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for k, v := range m {
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a = append(a, fmt.Sprintf("%s=%s", k, v))
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}
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return a
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}
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// ContainerCreateToContainerCLIOpts converts a compat input struct to cliopts so it can be converted to
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// a specgen spec.
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func ContainerCreateToContainerCLIOpts(cc handlers.CreateContainerConfig) (*ContainerCLIOpts, []string, error) {
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var (
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capAdd []string
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cappDrop []string
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entrypoint string
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init bool
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specPorts []specgen.PortMapping
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)
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if cc.HostConfig.Init != nil {
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init = *cc.HostConfig.Init
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}
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// Iterate devices and convert back to string
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devices := make([]string, 0, len(cc.HostConfig.Devices))
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for _, dev := range cc.HostConfig.Devices {
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devices = append(devices, fmt.Sprintf("%s:%s:%s", dev.PathOnHost, dev.PathInContainer, dev.CgroupPermissions))
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}
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// iterate blkreaddevicebps
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readBps := make([]string, 0, len(cc.HostConfig.BlkioDeviceReadBps))
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for _, dev := range cc.HostConfig.BlkioDeviceReadBps {
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readBps = append(readBps, dev.String())
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}
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// iterate blkreaddeviceiops
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readIops := make([]string, 0, len(cc.HostConfig.BlkioDeviceReadIOps))
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for _, dev := range cc.HostConfig.BlkioDeviceReadIOps {
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readIops = append(readIops, dev.String())
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}
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// iterate blkwritedevicebps
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writeBps := make([]string, 0, len(cc.HostConfig.BlkioDeviceWriteBps))
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for _, dev := range cc.HostConfig.BlkioDeviceWriteBps {
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writeBps = append(writeBps, dev.String())
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}
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// iterate blkwritedeviceiops
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writeIops := make([]string, 0, len(cc.HostConfig.BlkioDeviceWriteIOps))
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for _, dev := range cc.HostConfig.BlkioDeviceWriteIOps {
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writeIops = append(writeIops, dev.String())
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}
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// entrypoint
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// can be a string or slice. if it is a slice, we need to
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// marshall it to json; otherwise it should just be the string
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// value
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if len(cc.Config.Entrypoint) > 0 {
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entrypoint = cc.Config.Entrypoint[0]
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if len(cc.Config.Entrypoint) > 1 {
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b, err := json.Marshal(cc.Config.Entrypoint)
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if err != nil {
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return nil, nil, err
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}
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entrypoint = string(b)
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}
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}
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// expose ports
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expose := make([]string, 0, len(cc.Config.ExposedPorts))
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for p := range cc.Config.ExposedPorts {
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expose = append(expose, fmt.Sprintf("%s/%s", p.Port(), p.Proto()))
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}
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// mounts type=tmpfs/bind,source=,dest=,opt=val
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// TODO options
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mounts := make([]string, 0, len(cc.HostConfig.Mounts))
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for _, m := range cc.HostConfig.Mounts {
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mount := fmt.Sprintf("type=%s", m.Type)
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if len(m.Source) > 0 {
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mount += fmt.Sprintf("source=%s", m.Source)
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}
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if len(m.Target) > 0 {
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mount += fmt.Sprintf("dest=%s", m.Target)
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}
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mounts = append(mounts, mount)
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}
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//volumes
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volumes := make([]string, 0, len(cc.Config.Volumes))
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for v := range cc.Config.Volumes {
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volumes = append(volumes, v)
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}
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// dns
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dns := make([]net.IP, 0, len(cc.HostConfig.DNS))
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for _, d := range cc.HostConfig.DNS {
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dns = append(dns, net.ParseIP(d))
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}
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// publish
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for port, pbs := range cc.HostConfig.PortBindings {
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for _, pb := range pbs {
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hostport, err := strconv.Atoi(pb.HostPort)
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if err != nil {
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return nil, nil, err
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}
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tmpPort := specgen.PortMapping{
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HostIP: pb.HostIP,
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ContainerPort: uint16(port.Int()),
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HostPort: uint16(hostport),
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Range: 0,
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Protocol: port.Proto(),
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}
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specPorts = append(specPorts, tmpPort)
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}
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}
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// network names
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endpointsConfig := cc.NetworkingConfig.EndpointsConfig
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cniNetworks := make([]string, 0, len(endpointsConfig))
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for netName := range endpointsConfig {
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cniNetworks = append(cniNetworks, netName)
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}
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// netMode
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nsmode, _, err := specgen.ParseNetworkNamespace(cc.HostConfig.NetworkMode.NetworkName())
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if err != nil {
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return nil, nil, err
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}
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netNS := specgen.Namespace{
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NSMode: nsmode.NSMode,
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Value: nsmode.Value,
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}
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// network
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// Note: we cannot emulate compat exactly here. we only allow specifics of networks to be
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// defined when there is only one network.
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netInfo := entities.NetOptions{
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AddHosts: cc.HostConfig.ExtraHosts,
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CNINetworks: cniNetworks,
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DNSOptions: cc.HostConfig.DNSOptions,
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DNSSearch: cc.HostConfig.DNSSearch,
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DNSServers: dns,
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Network: netNS,
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PublishPorts: specPorts,
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}
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// static IP and MAC
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if len(endpointsConfig) == 1 {
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for _, ep := range endpointsConfig {
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// if IP address is provided
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if len(ep.IPAddress) > 0 {
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staticIP := net.ParseIP(ep.IPAddress)
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netInfo.StaticIP = &staticIP
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}
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// If MAC address is provided
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if len(ep.MacAddress) > 0 {
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staticMac, err := net.ParseMAC(ep.MacAddress)
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if err != nil {
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return nil, nil, err
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}
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netInfo.StaticMAC = &staticMac
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}
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break
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}
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}
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// Note: several options here are marked as "don't need". this is based
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// on speculation by Matt and I. We think that these come into play later
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// like with start. We believe this is just a difference in podman/compat
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cliOpts := ContainerCLIOpts{
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//Attach: nil, // dont need?
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Authfile: "",
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BlkIOWeight: strconv.Itoa(int(cc.HostConfig.BlkioWeight)),
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BlkIOWeightDevice: nil, // TODO
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CapAdd: append(capAdd, cc.HostConfig.CapAdd...),
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CapDrop: append(cappDrop, cc.HostConfig.CapDrop...),
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CGroupParent: cc.HostConfig.CgroupParent,
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CIDFile: cc.HostConfig.ContainerIDFile,
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CPUPeriod: uint64(cc.HostConfig.CPUPeriod),
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CPUQuota: cc.HostConfig.CPUQuota,
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CPURTPeriod: uint64(cc.HostConfig.CPURealtimePeriod),
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CPURTRuntime: cc.HostConfig.CPURealtimeRuntime,
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CPUShares: uint64(cc.HostConfig.CPUShares),
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//CPUS: 0, // dont need?
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CPUSetCPUs: cc.HostConfig.CpusetCpus,
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CPUSetMems: cc.HostConfig.CpusetMems,
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//Detach: false, // dont need
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//DetachKeys: "", // dont need
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Devices: devices,
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DeviceCGroupRule: nil,
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DeviceReadBPs: readBps,
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DeviceReadIOPs: readIops,
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DeviceWriteBPs: writeBps,
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DeviceWriteIOPs: writeIops,
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Entrypoint: &entrypoint,
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Env: cc.Config.Env,
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Expose: expose,
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GroupAdd: cc.HostConfig.GroupAdd,
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Hostname: cc.Config.Hostname,
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ImageVolume: "bind",
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Init: init,
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Interactive: cc.Config.OpenStdin,
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IPC: string(cc.HostConfig.IpcMode),
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Label: stringMaptoArray(cc.Config.Labels),
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LogDriver: cc.HostConfig.LogConfig.Type,
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LogOptions: stringMaptoArray(cc.HostConfig.LogConfig.Config),
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Memory: strconv.Itoa(int(cc.HostConfig.Memory)),
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MemoryReservation: strconv.Itoa(int(cc.HostConfig.MemoryReservation)),
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MemorySwap: strconv.Itoa(int(cc.HostConfig.MemorySwap)),
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Name: cc.Name,
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OOMScoreAdj: cc.HostConfig.OomScoreAdj,
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OverrideArch: "",
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OverrideOS: "",
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OverrideVariant: "",
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PID: string(cc.HostConfig.PidMode),
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PIDsLimit: cc.HostConfig.PidsLimit,
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Privileged: cc.HostConfig.Privileged,
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PublishAll: cc.HostConfig.PublishAllPorts,
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Quiet: false,
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ReadOnly: cc.HostConfig.ReadonlyRootfs,
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ReadOnlyTmpFS: true, // podman default
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Rm: cc.HostConfig.AutoRemove,
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SecurityOpt: cc.HostConfig.SecurityOpt,
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ShmSize: strconv.Itoa(int(cc.HostConfig.ShmSize)),
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StopSignal: cc.Config.StopSignal,
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StoreageOpt: stringMaptoArray(cc.HostConfig.StorageOpt),
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Sysctl: stringMaptoArray(cc.HostConfig.Sysctls),
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Systemd: "true", // podman default
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TmpFS: stringMaptoArray(cc.HostConfig.Tmpfs),
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TTY: cc.Config.Tty,
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//Ulimit: cc.HostConfig.Ulimits, // ask dan, no documented format
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User: cc.Config.User,
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UserNS: string(cc.HostConfig.UsernsMode),
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UTS: string(cc.HostConfig.UTSMode),
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Mount: mounts,
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Volume: volumes,
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VolumesFrom: cc.HostConfig.VolumesFrom,
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Workdir: cc.Config.WorkingDir,
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Net: &netInfo,
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}
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if cc.Config.StopTimeout != nil {
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cliOpts.StopTimeout = uint(*cc.Config.StopTimeout)
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}
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if cc.HostConfig.KernelMemory > 0 {
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cliOpts.KernelMemory = strconv.Itoa(int(cc.HostConfig.KernelMemory))
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}
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if len(cc.HostConfig.RestartPolicy.Name) > 0 {
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policy := cc.HostConfig.RestartPolicy.Name
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// only add restart count on failure
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if cc.HostConfig.RestartPolicy.IsOnFailure() {
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policy += fmt.Sprintf(":%d", cc.HostConfig.RestartPolicy.MaximumRetryCount)
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}
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cliOpts.Restart = policy
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}
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if cc.HostConfig.MemorySwappiness != nil {
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cliOpts.MemorySwappiness = *cc.HostConfig.MemorySwappiness
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}
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if cc.HostConfig.OomKillDisable != nil {
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cliOpts.OOMKillDisable = *cc.HostConfig.OomKillDisable
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}
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if cc.Config.Healthcheck != nil {
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cliOpts.HealthCmd = strings.Join(cc.Config.Healthcheck.Test, " ")
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cliOpts.HealthInterval = cc.Config.Healthcheck.Interval.String()
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cliOpts.HealthRetries = uint(cc.Config.Healthcheck.Retries)
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cliOpts.HealthStartPeriod = cc.Config.Healthcheck.StartPeriod.String()
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cliOpts.HealthTimeout = cc.Config.Healthcheck.Timeout.String()
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}
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// specgen assumes the image name is arg[0]
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cmd := []string{cc.Image}
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cmd = append(cmd, cc.Config.Cmd...)
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return &cliOpts, cmd, nil
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}
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@ -1,27 +1,19 @@
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package compat
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"strings"
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"github.com/containers/common/pkg/config"
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"github.com/containers/podman/v2/cmd/podman/common"
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"github.com/containers/podman/v2/libpod"
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"github.com/containers/podman/v2/libpod/define"
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image2 "github.com/containers/podman/v2/libpod/image"
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"github.com/containers/podman/v2/pkg/api/handlers"
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"github.com/containers/podman/v2/pkg/api/handlers/utils"
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"github.com/containers/podman/v2/pkg/namespaces"
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"github.com/containers/podman/v2/pkg/rootless"
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"github.com/containers/podman/v2/pkg/signal"
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createconfig "github.com/containers/podman/v2/pkg/spec"
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"github.com/containers/podman/v2/pkg/domain/entities"
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"github.com/containers/podman/v2/pkg/domain/infra/abi"
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"github.com/containers/podman/v2/pkg/specgen"
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"github.com/containers/storage"
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"github.com/gorilla/schema"
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"github.com/pkg/errors"
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"golang.org/x/sys/unix"
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)
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func CreateContainer(w http.ResponseWriter, r *http.Request) {
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@ -56,220 +48,27 @@ func CreateContainer(w http.ResponseWriter, r *http.Request) {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "NewFromLocal()"))
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return
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}
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containerConfig, err := runtime.GetConfig()
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// Take input structure and convert to cliopts
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cliOpts, args, err := common.ContainerCreateToContainerCLIOpts(input)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "GetConfig()"))
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "make cli opts()"))
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return
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}
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cc, err := makeCreateConfig(r.Context(), containerConfig, input, newImage)
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if err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "makeCreatConfig()"))
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sg := specgen.NewSpecGenerator(newImage.ID(), cliOpts.RootFS)
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if err := common.FillOutSpecGen(sg, cliOpts, args); err != nil {
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "fill out specgen"))
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return
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}
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cc.Name = query.Name
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utils.CreateContainer(r.Context(), w, runtime, &cc)
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}
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func makeCreateConfig(ctx context.Context, containerConfig *config.Config, input handlers.CreateContainerConfig, newImage *image2.Image) (createconfig.CreateConfig, error) {
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var (
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err error
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init bool
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)
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env := make(map[string]string)
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stopSignal := unix.SIGTERM
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if len(input.StopSignal) > 0 {
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stopSignal, err = signal.ParseSignal(input.StopSignal)
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if err != nil {
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return createconfig.CreateConfig{}, err
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}
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}
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workDir, err := newImage.WorkingDir(ctx)
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ic := abi.ContainerEngine{Libpod: runtime}
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report, err := ic.ContainerCreate(r.Context(), sg)
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if err != nil {
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return createconfig.CreateConfig{}, err
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utils.Error(w, "Something went wrong.", http.StatusInternalServerError, errors.Wrap(err, "container create"))
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return
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}
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if workDir == "" {
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workDir = "/"
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createResponse := entities.ContainerCreateResponse{
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ID: report.Id,
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Warnings: []string{},
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}
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if len(input.WorkingDir) > 0 {
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workDir = input.WorkingDir
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}
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// Only use image's Cmd when the user does not set the entrypoint
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if input.Entrypoint == nil && len(input.Cmd) == 0 {
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cmdSlice, err := newImage.Cmd(ctx)
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if err != nil {
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return createconfig.CreateConfig{}, err
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}
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input.Cmd = cmdSlice
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}
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if input.Entrypoint == nil {
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entrypointSlice, err := newImage.Entrypoint(ctx)
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if err != nil {
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return createconfig.CreateConfig{}, err
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}
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input.Entrypoint = entrypointSlice
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}
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stopTimeout := containerConfig.Engine.StopTimeout
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if input.StopTimeout != nil {
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stopTimeout = uint(*input.StopTimeout)
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}
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c := createconfig.CgroupConfig{
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Cgroups: "", // podman
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Cgroupns: "", // podman
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CgroupParent: "", // podman
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CgroupMode: "", // podman
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}
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security := createconfig.SecurityConfig{
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CapAdd: input.HostConfig.CapAdd,
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CapDrop: input.HostConfig.CapDrop,
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LabelOpts: nil, // podman
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NoNewPrivs: false, // podman
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ApparmorProfile: "", // podman
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SeccompProfilePath: "",
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SecurityOpts: input.HostConfig.SecurityOpt,
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Privileged: input.HostConfig.Privileged,
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ReadOnlyRootfs: input.HostConfig.ReadonlyRootfs,
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ReadOnlyTmpfs: false, // podman-only
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Sysctl: input.HostConfig.Sysctls,
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}
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var netmode namespaces.NetworkMode
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if rootless.IsRootless() {
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netmode = namespaces.NetworkMode(specgen.Slirp)
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}
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network := createconfig.NetworkConfig{
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DNSOpt: input.HostConfig.DNSOptions,
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DNSSearch: input.HostConfig.DNSSearch,
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DNSServers: input.HostConfig.DNS,
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ExposedPorts: input.ExposedPorts,
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||||
HTTPProxy: false, // podman
|
||||
IP6Address: "",
|
||||
IPAddress: "",
|
||||
LinkLocalIP: nil, // docker-only
|
||||
MacAddress: input.MacAddress,
|
||||
NetMode: netmode,
|
||||
Network: input.HostConfig.NetworkMode.NetworkName(),
|
||||
NetworkAlias: nil, // docker-only now
|
||||
PortBindings: input.HostConfig.PortBindings,
|
||||
Publish: nil, // podmanseccompPath
|
||||
PublishAll: input.HostConfig.PublishAllPorts,
|
||||
}
|
||||
|
||||
uts := createconfig.UtsConfig{
|
||||
UtsMode: namespaces.UTSMode(input.HostConfig.UTSMode),
|
||||
NoHosts: false, //podman
|
||||
HostAdd: input.HostConfig.ExtraHosts,
|
||||
Hostname: input.Hostname,
|
||||
}
|
||||
|
||||
z := createconfig.UserConfig{
|
||||
GroupAdd: input.HostConfig.GroupAdd,
|
||||
IDMappings: &storage.IDMappingOptions{}, // podman //TODO <--- fix this,
|
||||
UsernsMode: namespaces.UsernsMode(input.HostConfig.UsernsMode),
|
||||
User: input.User,
|
||||
}
|
||||
pidConfig := createconfig.PidConfig{PidMode: namespaces.PidMode(input.HostConfig.PidMode)}
|
||||
// TODO: We should check that these binds are all listed in the `Volumes`
|
||||
// key since it doesn't make sense to define a `Binds` element for a
|
||||
// container path which isn't defined as a volume
|
||||
volumes := input.HostConfig.Binds
|
||||
|
||||
// Docker is more flexible about its input where podman throws
|
||||
// away incorrectly formatted variables so we cannot reuse the
|
||||
// parsing of the env input
|
||||
// [Foo Other=one Blank=]
|
||||
imgEnv, err := newImage.Env(ctx)
|
||||
if err != nil {
|
||||
return createconfig.CreateConfig{}, err
|
||||
}
|
||||
input.Env = append(imgEnv, input.Env...)
|
||||
for _, e := range input.Env {
|
||||
splitEnv := strings.Split(e, "=")
|
||||
switch len(splitEnv) {
|
||||
case 0:
|
||||
continue
|
||||
case 1:
|
||||
env[splitEnv[0]] = ""
|
||||
default:
|
||||
env[splitEnv[0]] = strings.Join(splitEnv[1:], "=")
|
||||
}
|
||||
}
|
||||
|
||||
// format the tmpfs mounts into a []string from map
|
||||
tmpfs := make([]string, 0, len(input.HostConfig.Tmpfs))
|
||||
for k, v := range input.HostConfig.Tmpfs {
|
||||
tmpfs = append(tmpfs, fmt.Sprintf("%s:%s", k, v))
|
||||
}
|
||||
|
||||
if input.HostConfig.Init != nil && *input.HostConfig.Init {
|
||||
init = true
|
||||
}
|
||||
|
||||
m := createconfig.CreateConfig{
|
||||
Annotations: nil, // podman
|
||||
Args: nil,
|
||||
Cgroup: c,
|
||||
CidFile: "",
|
||||
ConmonPidFile: "", // podman
|
||||
Command: input.Cmd,
|
||||
UserCommand: input.Cmd, // podman
|
||||
Detach: false, //
|
||||
// Devices: input.HostConfig.Devices,
|
||||
Entrypoint: input.Entrypoint,
|
||||
Env: env,
|
||||
HealthCheck: nil, //
|
||||
Init: init,
|
||||
InitPath: "", // tbd
|
||||
Image: input.Image,
|
||||
ImageID: newImage.ID(),
|
||||
BuiltinImgVolumes: nil, // podman
|
||||
ImageVolumeType: "", // podman
|
||||
Interactive: input.OpenStdin,
|
||||
// IpcMode: input.HostConfig.IpcMode,
|
||||
Labels: input.Labels,
|
||||
LogDriver: input.HostConfig.LogConfig.Type, // is this correct
|
||||
// LogDriverOpt: input.HostConfig.LogConfig.Config,
|
||||
Name: input.Name,
|
||||
Network: network,
|
||||
Pod: "", // podman
|
||||
PodmanPath: "", // podman
|
||||
Quiet: false, // front-end only
|
||||
Resources: createconfig.CreateResourceConfig{MemorySwappiness: -1},
|
||||
RestartPolicy: input.HostConfig.RestartPolicy.Name,
|
||||
Rm: input.HostConfig.AutoRemove,
|
||||
StopSignal: stopSignal,
|
||||
StopTimeout: stopTimeout,
|
||||
Systemd: false, // podman
|
||||
Tmpfs: tmpfs,
|
||||
User: z,
|
||||
Uts: uts,
|
||||
Tty: input.Tty,
|
||||
Mounts: nil, // we populate
|
||||
// MountsFlag: input.HostConfig.Mounts,
|
||||
NamedVolumes: nil, // we populate
|
||||
Volumes: volumes,
|
||||
VolumesFrom: input.HostConfig.VolumesFrom,
|
||||
WorkDir: workDir,
|
||||
Rootfs: "", // podman
|
||||
Security: security,
|
||||
Syslog: false, // podman
|
||||
|
||||
Pid: pidConfig,
|
||||
}
|
||||
|
||||
fullCmd := append(input.Entrypoint, input.Cmd...)
|
||||
if len(fullCmd) > 0 {
|
||||
m.PodmanPath = fullCmd[0]
|
||||
if len(fullCmd) == 1 {
|
||||
m.Args = fullCmd
|
||||
} else {
|
||||
m.Args = fullCmd[1:]
|
||||
}
|
||||
}
|
||||
|
||||
return m, nil
|
||||
utils.WriteResponse(w, http.StatusCreated, createResponse)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -110,7 +110,7 @@ func makeCommand(ctx context.Context, s *specgen.SpecGenerator, img *image.Image
|
|||
// Only use image command if the user did not manually set an
|
||||
// entrypoint.
|
||||
command := s.Command
|
||||
if command == nil && img != nil && s.Entrypoint == nil {
|
||||
if (command == nil || len(command) == 0) && img != nil && (s.Entrypoint == nil || len(s.Entrypoint) == 0) {
|
||||
newCmd, err := img.Cmd(ctx)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
|
|
|
|||
|
|
@ -206,16 +206,6 @@ t POST containers/${cid_top}/stop "" 204
|
|||
t DELETE containers/$cid 204
|
||||
t DELETE containers/$cid_top 204
|
||||
|
||||
# test the apiv2 create, shouldn't ignore the ENV and WORKDIR from the image
|
||||
t POST containers/create '"Image":"'$ENV_WORKDIR_IMG'","Env":["testKey1"]' 201 \
|
||||
.Id~[0-9a-f]\\{64\\}
|
||||
cid=$(jq -r '.Id' <<<"$output")
|
||||
t GET containers/$cid/json 200 \
|
||||
.Config.Env~.*REDIS_VERSION= \
|
||||
.Config.Env~.*testKey1= \
|
||||
.Config.WorkingDir="/data" # default is /data
|
||||
t DELETE containers/$cid 204
|
||||
|
||||
# test the WORKDIR and StopSignal
|
||||
t POST containers/create '"Image":"'$ENV_WORKDIR_IMG'","WorkingDir":"/dataDir","StopSignal":"9"' 201 \
|
||||
.Id~[0-9a-f]\\{64\\}
|
||||
|
|
|
|||
Loading…
Reference in New Issue