runconfig

package
Version: v0.0.0-...-57f2e52 Latest Latest
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Published: Mar 31, 2016 License: Apache-2.0 Imports: 11 Imported by: 0

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Constants

This section is empty.

Variables

View Source
var (
	// ErrConflictContainerNetworkAndLinks conflict between --net=container and links
	ErrConflictContainerNetworkAndLinks = fmt.Errorf("Conflicting options: --net=container can't be used with links. This would result in undefined behavior")
	// ErrConflictNetworkAndDNS conflict between --dns and the network mode
	ErrConflictNetworkAndDNS = fmt.Errorf("Conflicting options: --dns and the network mode (--net)")
	// ErrConflictNetworkHostname conflict between the hostname and the network mode
	ErrConflictNetworkHostname = fmt.Errorf("Conflicting options: -h and the network mode (--net)")
	// ErrConflictHostNetworkAndLinks conflict between --net=host and links
	ErrConflictHostNetworkAndLinks = fmt.Errorf("Conflicting options: --net=host can't be used with links. This would result in undefined behavior")
	// ErrConflictContainerNetworkAndMac conflict between the mac address and the network mode
	ErrConflictContainerNetworkAndMac = fmt.Errorf("Conflicting options: --mac-address and the network mode (--net)")
	// ErrConflictNetworkHosts conflict between add-host and the network mode
	ErrConflictNetworkHosts = fmt.Errorf("Conflicting options: --add-host and the network mode (--net)")
	// ErrConflictNetworkPublishPorts conflict between the pulbish options and the network mode
	ErrConflictNetworkPublishPorts = fmt.Errorf("Conflicting options: -p, -P, --publish-all, --publish and the network mode (--net)")
	// ErrConflictNetworkExposePorts conflict between the expose option and the network mode
	ErrConflictNetworkExposePorts = fmt.Errorf("Conflicting options: --expose and the network mode (--expose)")
)

Functions

func Compare

func Compare(a, b *Config) bool

Compare two Config struct. Do not compare the "Image" nor "Hostname" fields If OpenStdin is set, then it differs

func DecodeContainerConfig

func DecodeContainerConfig(src io.Reader) (*Config, *HostConfig, error)

DecodeContainerConfig decodes a json encoded config into a ContainerConfigWrapper struct and returns both a Config and an HostConfig struct Be aware this function is not checking whether the resulted structs are nil, it's your business to do so

func Merge

func Merge(userConf, imageConf *Config) error

Merge merges two Config, the image container configuration (defaults values), and the user container configuration, either passed by the API or generated by the cli. It will mutate the specified user configuration (userConf) with the image configuration where the user configuration is incomplete.

func Parse

func Parse(cmd *flag.FlagSet, args []string) (*Config, *HostConfig, *flag.FlagSet, error)

Parse parses the specified args for the specified command and generates a Config, a HostConfig and returns them with the specified command. If the specified args are not valid, it will return an error.

Types

type CapList

type CapList struct {
	// contains filtered or unexported fields
}

CapList represents the list of capabilities of the container.

func NewCapList

func NewCapList(caps []string) *CapList

NewCapList creates a CapList from a slice of string.

func (*CapList) Len

func (c *CapList) Len() int

Len returns the number of specific kernel capabilities.

func (*CapList) MarshalJSON

func (c *CapList) MarshalJSON() ([]byte, error)

MarshalJSON marshals (or serializes) the CapList into JSON.

func (*CapList) Slice

func (c *CapList) Slice() []string

Slice returns the specific capabilities into a slice of KeyValuePair.

func (*CapList) UnmarshalJSON

func (c *CapList) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals (or deserializes) the specified byte slices from JSON to a CapList.

type Command

type Command struct {
	// contains filtered or unexported fields
}

Command encapsulates the container command. It might be represented as a string or an array of strings. We need to override the json decoder to accept both options. The JSON decoder will fail if the api sends an string and

we try to decode it into an array of string.

func NewCommand

func NewCommand(parts ...string) *Command

NewCommand creates a Command based on the specified parts (as strings).

func (*Command) Len

func (e *Command) Len() int

Len returns the number of parts of the Entrypoint.

func (*Command) MarshalJSON

func (e *Command) MarshalJSON() ([]byte, error)

MarshalJSON Marshals (or serializes) the Command into the json format. This method is needed to implement json.Marshaller.

func (*Command) Slice

func (e *Command) Slice() []string

Slice gets the parts of the Entrypoint as a Slice of string.

func (*Command) ToString

func (e *Command) ToString() string

ToString gets a string representing a Command.

func (*Command) UnmarshalJSON

func (e *Command) UnmarshalJSON(b []byte) error

UnmarshalJSON decodes the entrypoint whether it's a string or an array of strings. This method is needed to implement json.Unmarshaler.

type Config

type Config struct {
	Hostname        string                // Hostname
	Domainname      string                // Domainname
	User            string                // User that will run the command(s) inside the container
	AttachStdin     bool                  // Attach the standard input, makes possible user interaction
	AttachStdout    bool                  // Attach the standard output
	AttachStderr    bool                  // Attach the standard error
	ExposedPorts    map[nat.Port]struct{} // List of exposed ports
	PublishService  string                // Name of the network service exposed by the container
	Tty             bool                  // Attach standard streams to a tty, including stdin if it is not closed.
	OpenStdin       bool                  // Open stdin
	StdinOnce       bool                  // If true, close stdin after the 1 attached client disconnects.
	Env             []string              // List of environment variable to set in the container
	Cmd             *Command              // Command to run when starting the container
	Image           string                // Name of the image as it was passed by the operator (eg. could be symbolic)
	Volumes         map[string]struct{}   // List of volumes (mounts) used for the container
	VolumeDriver    string                // Name of the volume driver used to mount volumes
	WorkingDir      string                // Current directory (PWD) in the command will be launched
	Entrypoint      *Entrypoint           // Entrypoint to run when starting the container
	NetworkDisabled bool                  // Is network disabled
	MacAddress      string                // Mac Address of the container
	OnBuild         []string              // ONBUILD metadata that were defined on the image Dockerfile
	Labels          map[string]string     // List of labels set to this container
}

Config contains the configuration data about a container. It should hold only portable information about the container. Here, "portable" means "independent from the host we are running on". Non-portable information *should* appear in HostConfig.

type ContainerConfigWrapper

type ContainerConfigWrapper struct {
	*Config
	InnerHostConfig *HostConfig `json:"HostConfig,omitempty"`
	Cpuset          string      `json:",omitempty"` // Deprecated. Exported for backwards compatibility.
	*HostConfig                 // Deprecated. Exported to read attrubutes from json that are not in the inner host config structure.

}

ContainerConfigWrapper is a Config wrapper that hold the container Config (portable) and the corresponding HostConfig (non-portable).

func MergeConfigs

func MergeConfigs(config *Config, hostConfig *HostConfig) *ContainerConfigWrapper

MergeConfigs merges the specified container Config and HostConfig. It creates a ContainerConfigWrapper.

func (*ContainerConfigWrapper) GetHostConfig

func (w *ContainerConfigWrapper) GetHostConfig() *HostConfig

GetHostConfig gets the HostConfig of the Config. It's mostly there to handle Deprecated fields of the ContainerConfigWrapper

type DeviceMapping

type DeviceMapping struct {
	PathOnHost        string
	PathInContainer   string
	CgroupPermissions string
}

DeviceMapping represents the device mapping between the host and the container.

func ParseDevice

func ParseDevice(device string) (DeviceMapping, error)

ParseDevice parses a device mapping string to a DeviceMapping struct

type Entrypoint

type Entrypoint struct {
	// contains filtered or unexported fields
}

Entrypoint encapsulates the container entrypoint. It might be represented as a string or an array of strings. We need to override the json decoder to accept both options. The JSON decoder will fail if the api sends an string and

we try to decode it into an array of string.

func NewEntrypoint

func NewEntrypoint(parts ...string) *Entrypoint

NewEntrypoint creates an Entrypoint based on the specified parts (as strings).

func (*Entrypoint) Len

func (e *Entrypoint) Len() int

Len returns the number of parts of the Entrypoint.

func (*Entrypoint) MarshalJSON

func (e *Entrypoint) MarshalJSON() ([]byte, error)

MarshalJSON Marshals (or serializes) the Entrypoint into the json format. This method is needed to implement json.Marshaller.

func (*Entrypoint) Slice

func (e *Entrypoint) Slice() []string

Slice gets the parts of the Entrypoint as a Slice of string.

func (*Entrypoint) UnmarshalJSON

func (e *Entrypoint) UnmarshalJSON(b []byte) error

UnmarshalJSON decodes the entrypoint whether it's a string or an array of strings. This method is needed to implement json.Unmarshaler.

type ExecConfig

type ExecConfig struct {
	User         string   // User that will run the command
	Privileged   bool     // Is the container in privileged mode
	Tty          bool     // Attach standard streams to a tty.
	Container    string   // Name of the container (to execute in)
	AttachStdin  bool     // Attach the standard input, makes possible user interaction
	AttachStderr bool     // Attach the standard output
	AttachStdout bool     // Attach the standard error
	Detach       bool     // Execute in detach mode
	Cmd          []string // Execution commands and args
}

ExecConfig is a small subset of the Config struct that hold the configuration for the exec feature of docker.

func ParseExec

func ParseExec(cmd *flag.FlagSet, args []string) (*ExecConfig, error)

ParseExec parses the specified args for the specified command and generates an ExecConfig from it. If the minimal number of specified args is not right or if specified args are not valid, it will return an error.

type HostConfig

type HostConfig struct {
	Binds            []string         // List of volume bindings for this container
	ContainerIDFile  string           // File (path) where the containerId is written
	LxcConf          *LxcConfig       // Additional lxc configuration
	Memory           int64            // Memory limit (in bytes)
	MemorySwap       int64            // Total memory usage (memory + swap); set `-1` to disable swap
	CPUShares        int64            `json:"CpuShares"` // CPU shares (relative weight vs. other containers)
	CPUPeriod        int64            `json:"CpuPeriod"` // CPU CFS (Completely Fair Scheduler) period
	CpusetCpus       string           // CpusetCpus 0-2, 0,1
	CpusetMems       string           // CpusetMems 0-2, 0,1
	CPUQuota         int64            `json:"CpuQuota"` // CPU CFS (Completely Fair Scheduler) quota
	BlkioWeight      int64            // Block IO weight (relative weight vs. other containers)
	OomKillDisable   bool             // Whether to disable OOM Killer or not
	MemorySwappiness *int64           // Tuning container memory swappiness behaviour
	Privileged       bool             // Is the container in privileged mode
	PortBindings     nat.PortMap      // Port mapping between the exposed port (container) and the host
	Links            []string         // List of links (in the name:alias form)
	PublishAllPorts  bool             // Should docker publish all exposed port for the container
	DNS              []string         `json:"Dns"`       // List of DNS server to lookup
	DNSSearch        []string         `json:"DnsSearch"` // List of DNSSearch to look for
	ExtraHosts       []string         // List of extra hosts
	VolumesFrom      []string         // List of volumes to take from other container
	Devices          []DeviceMapping  // List of devices to map inside the container
	NetworkMode      NetworkMode      // Network namespace to use for the container
	IpcMode          IpcMode          // IPC namespace to use for the container
	PidMode          PidMode          // PID namespace to use for the container
	UTSMode          UTSMode          // UTS namespace to use for the container
	CapAdd           *CapList         // List of kernel capabilities to add to the container
	CapDrop          *CapList         // List of kernel capabilities to remove from the container
	GroupAdd         []string         // List of additional groups that the container process will run as
	RestartPolicy    RestartPolicy    // Restart policy to be used for the container
	SecurityOpt      []string         // List of string values to customize labels for MLS systems, such as SELinux.
	ReadonlyRootfs   bool             // Is the container root filesystem in read-only
	Ulimits          []*ulimit.Ulimit // List of ulimits to be set in the container
	LogConfig        LogConfig        // Configuration of the logs for this container
	CgroupParent     string           // Parent cgroup.
	ConsoleSize      [2]int           // Initial console size on Windows
}

HostConfig the non-portable Config structure of a container. Here, "non-portable" means "dependent of the host we are running on". Portable information *should* appear in Config.

func DecodeHostConfig

func DecodeHostConfig(src io.Reader) (*HostConfig, error)

DecodeHostConfig creates a HostConfig based on the specified Reader. It assumes the content of the reader will be JSON, and decodes it.

type IpcMode

type IpcMode string

IpcMode represents the container ipc stack.

func (IpcMode) Container

func (n IpcMode) Container() string

Container returns the name of the container ipc stack is going to be used.

func (IpcMode) IsContainer

func (n IpcMode) IsContainer() bool

IsContainer indicates whether the container uses a container's ipc stack.

func (IpcMode) IsHost

func (n IpcMode) IsHost() bool

IsHost indicates whether the container uses the host's ipc stack.

func (IpcMode) IsPrivate

func (n IpcMode) IsPrivate() bool

IsPrivate indicates whether the container uses it's private ipc stack.

func (IpcMode) Valid

func (n IpcMode) Valid() bool

Valid indicates whether the ipc stack is valid.

type KeyValuePair

type KeyValuePair struct {
	Key   string
	Value string
}

KeyValuePair is a structure that hold a value for a key.

type LogConfig

type LogConfig struct {
	Type   string
	Config map[string]string
}

LogConfig represents the logging configuration of the container.

type LxcConfig

type LxcConfig struct {
	// contains filtered or unexported fields
}

LxcConfig represents the specific LXC configuration of the container.

func NewLxcConfig

func NewLxcConfig(values []KeyValuePair) *LxcConfig

NewLxcConfig creates a LxcConfig from the specified slice of KeyValuePair.

func (*LxcConfig) Len

func (c *LxcConfig) Len() int

Len returns the number of specific lxc configuration.

func (*LxcConfig) MarshalJSON

func (c *LxcConfig) MarshalJSON() ([]byte, error)

MarshalJSON marshals (or serializes) the LxcConfig into JSON.

func (*LxcConfig) Slice

func (c *LxcConfig) Slice() []KeyValuePair

Slice returns the specific lxc configuration into a slice of KeyValuePair.

func (*LxcConfig) UnmarshalJSON

func (c *LxcConfig) UnmarshalJSON(b []byte) error

UnmarshalJSON unmarshals (or deserializes) the specified byte slices from JSON to a LxcConfig.

type NetworkMode

type NetworkMode string

NetworkMode represents the container network stack.

func DefaultDaemonNetworkMode

func DefaultDaemonNetworkMode() NetworkMode

DefaultDaemonNetworkMode returns the default network stack the daemon should use.

func (NetworkMode) IsBridge

func (n NetworkMode) IsBridge() bool

IsBridge indicates whether container uses the bridge network stack

func (NetworkMode) IsContainer

func (n NetworkMode) IsContainer() bool

IsContainer indicates whether container uses a container network stack.

func (NetworkMode) IsDefault

func (n NetworkMode) IsDefault() bool

IsDefault indicates whether container uses the default network stack.

func (NetworkMode) IsHost

func (n NetworkMode) IsHost() bool

IsHost indicates whether container uses the host network stack.

func (NetworkMode) IsNone

func (n NetworkMode) IsNone() bool

IsNone indicates whether container isn't using a network stack.

func (NetworkMode) IsPrivate

func (n NetworkMode) IsPrivate() bool

IsPrivate indicates whether container uses it's private network stack.

func (NetworkMode) NetworkName

func (n NetworkMode) NetworkName() string

NetworkName returns the name of the network stack.

type PidMode

type PidMode string

PidMode represents the pid stack of the container.

func (PidMode) IsHost

func (n PidMode) IsHost() bool

IsHost indicates whether the container uses the host's pid stack.

func (PidMode) IsPrivate

func (n PidMode) IsPrivate() bool

IsPrivate indicates whether the container uses it's private pid stack.

func (PidMode) Valid

func (n PidMode) Valid() bool

Valid indicates whether the pid stack is valid.

type RestartPolicy

type RestartPolicy struct {
	Name              string
	MaximumRetryCount int
}

RestartPolicy represents the restart policies of the container.

func ParseRestartPolicy

func ParseRestartPolicy(policy string) (RestartPolicy, error)

ParseRestartPolicy returns the parsed policy or an error indicating what is incorrect

func (*RestartPolicy) IsAlways

func (rp *RestartPolicy) IsAlways() bool

IsAlways indicates whether the container has the "always" restart policy. This means the container will automatically restart regardless of the exit status.

func (*RestartPolicy) IsNone

func (rp *RestartPolicy) IsNone() bool

IsNone indicates whether the container has the "no" restart policy. This means the container will not automatically restart when exiting.

func (*RestartPolicy) IsOnFailure

func (rp *RestartPolicy) IsOnFailure() bool

IsOnFailure indicates whether the container has the "on-failure" restart policy. This means the contain will automatically restart of exiting with a non-zero exit status.

type UTSMode

type UTSMode string

UTSMode represents the UTS namespace of the container.

func (UTSMode) IsHost

func (n UTSMode) IsHost() bool

IsHost indicates whether the container uses the host's UTS namespace.

func (UTSMode) IsPrivate

func (n UTSMode) IsPrivate() bool

IsPrivate indicates whether the container uses it's private UTS namespace.

func (UTSMode) Valid

func (n UTSMode) Valid() bool

Valid indicates whether the UTS namespace is valid.

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