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1df87b9506
Currently, the HostConfig is only passed from the CLI to Docker only when issuing a docker create, but not when doing a docker run. In the near future, in order to allocate ports at creation time rather than start time, we will need to have the HostConfig readily available at container creation. This PR makes the client always pass the HostConfig when creating a container (regardless of whether it's for a run or create). Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>
101 lines
2.9 KiB
Go
101 lines
2.9 KiB
Go
package daemon
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import (
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"github.com/docker/docker/engine"
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"github.com/docker/docker/graph"
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"github.com/docker/docker/pkg/parsers"
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"github.com/docker/docker/runconfig"
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)
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func (daemon *Daemon) ContainerCreate(job *engine.Job) engine.Status {
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var name string
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if len(job.Args) == 1 {
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name = job.Args[0]
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} else if len(job.Args) > 1 {
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return job.Errorf("Usage: %s", job.Name)
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}
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config := runconfig.ContainerConfigFromJob(job)
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if config.Memory != 0 && config.Memory < 4194304 {
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return job.Errorf("Minimum memory limit allowed is 4MB")
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}
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if config.Memory > 0 && !daemon.SystemConfig().MemoryLimit {
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job.Errorf("Your kernel does not support memory limit capabilities. Limitation discarded.\n")
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config.Memory = 0
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}
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if config.Memory > 0 && !daemon.SystemConfig().SwapLimit {
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job.Errorf("Your kernel does not support swap limit capabilities. Limitation discarded.\n")
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config.MemorySwap = -1
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}
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var hostConfig *runconfig.HostConfig
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if job.EnvExists("HostConfig") {
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hostConfig = runconfig.ContainerHostConfigFromJob(job)
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} else {
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// Older versions of the API don't provide a HostConfig.
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hostConfig = nil
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}
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container, buildWarnings, err := daemon.Create(config, hostConfig, name)
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if err != nil {
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if daemon.Graph().IsNotExist(err) {
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_, tag := parsers.ParseRepositoryTag(config.Image)
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if tag == "" {
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tag = graph.DEFAULTTAG
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}
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return job.Errorf("No such image: %s (tag: %s)", config.Image, tag)
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}
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return job.Error(err)
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}
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if !container.Config.NetworkDisabled && daemon.SystemConfig().IPv4ForwardingDisabled {
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job.Errorf("IPv4 forwarding is disabled.\n")
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}
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container.LogEvent("create")
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// FIXME: this is necessary because daemon.Create might return a nil container
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// with a non-nil error. This should not happen! Once it's fixed we
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// can remove this workaround.
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if container != nil {
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job.Printf("%s\n", container.ID)
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}
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for _, warning := range buildWarnings {
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job.Errorf("%s\n", warning)
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}
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return engine.StatusOK
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}
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// Create creates a new container from the given configuration with a given name.
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func (daemon *Daemon) Create(config *runconfig.Config, hostConfig *runconfig.HostConfig, name string) (*Container, []string, error) {
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var (
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container *Container
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warnings []string
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)
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img, err := daemon.repositories.LookupImage(config.Image)
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if err != nil {
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return nil, nil, err
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}
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if err := img.CheckDepth(); err != nil {
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return nil, nil, err
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}
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if warnings, err = daemon.mergeAndVerifyConfig(config, img); err != nil {
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return nil, nil, err
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}
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if container, err = daemon.newContainer(name, config, img); err != nil {
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return nil, nil, err
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}
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if err := daemon.createRootfs(container, img); err != nil {
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return nil, nil, err
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}
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if hostConfig != nil {
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if err := daemon.setHostConfig(container, hostConfig); err != nil {
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return nil, nil, err
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}
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}
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if err := container.ToDisk(); err != nil {
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return nil, nil, err
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}
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if err := daemon.Register(container); err != nil {
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return nil, nil, err
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}
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return container, warnings, nil
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}
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