/usr/share/gocode/src/github.com/fsouza/go-dockerclient/container.go is in golang-github-fsouza-go-dockerclient-dev 0.0+git20150905-1.
This file is owned by root:root, with mode 0o644.
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// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package docker
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"net/http"
"net/url"
"strconv"
"strings"
"time"
)
// ErrContainerAlreadyExists is the error returned by CreateContainer when the
// container already exists.
var ErrContainerAlreadyExists = errors.New("container already exists")
// ListContainersOptions specify parameters to the ListContainers function.
//
// See https://goo.gl/47a6tO for more details.
type ListContainersOptions struct {
All bool
Size bool
Limit int
Since string
Before string
Filters map[string][]string
}
// APIPort is a type that represents a port mapping returned by the Docker API
type APIPort struct {
PrivatePort int64 `json:"PrivatePort,omitempty" yaml:"PrivatePort,omitempty"`
PublicPort int64 `json:"PublicPort,omitempty" yaml:"PublicPort,omitempty"`
Type string `json:"Type,omitempty" yaml:"Type,omitempty"`
IP string `json:"IP,omitempty" yaml:"IP,omitempty"`
}
// APIContainers represents each container in the list returned by
// ListContainers.
type APIContainers struct {
ID string `json:"Id" yaml:"Id"`
Image string `json:"Image,omitempty" yaml:"Image,omitempty"`
Command string `json:"Command,omitempty" yaml:"Command,omitempty"`
Created int64 `json:"Created,omitempty" yaml:"Created,omitempty"`
Status string `json:"Status,omitempty" yaml:"Status,omitempty"`
Ports []APIPort `json:"Ports,omitempty" yaml:"Ports,omitempty"`
SizeRw int64 `json:"SizeRw,omitempty" yaml:"SizeRw,omitempty"`
SizeRootFs int64 `json:"SizeRootFs,omitempty" yaml:"SizeRootFs,omitempty"`
Names []string `json:"Names,omitempty" yaml:"Names,omitempty"`
Labels map[string]string `json:"Labels,omitempty" yaml:"Labels, omitempty"`
}
// ListContainers returns a slice of containers matching the given criteria.
//
// See https://goo.gl/47a6tO for more details.
func (c *Client) ListContainers(opts ListContainersOptions) ([]APIContainers, error) {
path := "/containers/json?" + queryString(opts)
body, _, err := c.do("GET", path, doOptions{})
if err != nil {
return nil, err
}
var containers []APIContainers
err = json.Unmarshal(body, &containers)
if err != nil {
return nil, err
}
return containers, nil
}
// Port represents the port number and the protocol, in the form
// <number>/<protocol>. For example: 80/tcp.
type Port string
// Port returns the number of the port.
func (p Port) Port() string {
return strings.Split(string(p), "/")[0]
}
// Proto returns the name of the protocol.
func (p Port) Proto() string {
parts := strings.Split(string(p), "/")
if len(parts) == 1 {
return "tcp"
}
return parts[1]
}
// State represents the state of a container.
type State struct {
Running bool `json:"Running,omitempty" yaml:"Running,omitempty"`
Paused bool `json:"Paused,omitempty" yaml:"Paused,omitempty"`
Restarting bool `json:"Restarting,omitempty" yaml:"Restarting,omitempty"`
OOMKilled bool `json:"OOMKilled,omitempty" yaml:"OOMKilled,omitempty"`
Pid int `json:"Pid,omitempty" yaml:"Pid,omitempty"`
ExitCode int `json:"ExitCode,omitempty" yaml:"ExitCode,omitempty"`
Error string `json:"Error,omitempty" yaml:"Error,omitempty"`
StartedAt time.Time `json:"StartedAt,omitempty" yaml:"StartedAt,omitempty"`
FinishedAt time.Time `json:"FinishedAt,omitempty" yaml:"FinishedAt,omitempty"`
}
// String returns the string representation of a state.
func (s *State) String() string {
if s.Running {
if s.Paused {
return "paused"
}
return fmt.Sprintf("Up %s", time.Now().UTC().Sub(s.StartedAt))
}
return fmt.Sprintf("Exit %d", s.ExitCode)
}
// PortBinding represents the host/container port mapping as returned in the
// `docker inspect` json
type PortBinding struct {
HostIP string `json:"HostIP,omitempty" yaml:"HostIP,omitempty"`
HostPort string `json:"HostPort,omitempty" yaml:"HostPort,omitempty"`
}
// PortMapping represents a deprecated field in the `docker inspect` output,
// and its value as found in NetworkSettings should always be nil
type PortMapping map[string]string
// NetworkSettings contains network-related information about a container
type NetworkSettings struct {
IPAddress string `json:"IPAddress,omitempty" yaml:"IPAddress,omitempty"`
IPPrefixLen int `json:"IPPrefixLen,omitempty" yaml:"IPPrefixLen,omitempty"`
MacAddress string `json:"MacAddress,omitempty" yaml:"MacAddress,omitempty"`
Gateway string `json:"Gateway,omitempty" yaml:"Gateway,omitempty"`
Bridge string `json:"Bridge,omitempty" yaml:"Bridge,omitempty"`
PortMapping map[string]PortMapping `json:"PortMapping,omitempty" yaml:"PortMapping,omitempty"`
Ports map[Port][]PortBinding `json:"Ports,omitempty" yaml:"Ports,omitempty"`
NetworkID string `json:"NetworkID,omitempty" yaml:"NetworkID,omitempty"`
EndpointID string `json:"EndpointID,omitempty" yaml:"EndpointID,omitempty"`
SandboxKey string `json:"SandboxKey,omitempty" yaml:"SandboxKey,omitempty"`
GlobalIPv6Address string `json:"GlobalIPv6Address,omitempty" yaml:"GlobalIPv6Address,omitempty"`
GlobalIPv6PrefixLen int `json:"GlobalIPv6PrefixLen,omitempty" yaml:"GlobalIPv6PrefixLen,omitempty"`
IPv6Gateway string `json:"IPv6Gateway,omitempty" yaml:"IPv6Gateway,omitempty"`
LinkLocalIPv6Address string `json:"LinkLocalIPv6Address,omitempty" yaml:"LinkLocalIPv6Address,omitempty"`
LinkLocalIPv6PrefixLen int `json:"LinkLocalIPv6PrefixLen,omitempty" yaml:"LinkLocalIPv6PrefixLen,omitempty"`
SecondaryIPAddresses []string `json:"SecondaryIPAddresses,omitempty" yaml:"SecondaryIPAddresses,omitempty"`
SecondaryIPv6Addresses []string `json:"SecondaryIPv6Addresses,omitempty" yaml:"SecondaryIPv6Addresses,omitempty"`
}
// PortMappingAPI translates the port mappings as contained in NetworkSettings
// into the format in which they would appear when returned by the API
func (settings *NetworkSettings) PortMappingAPI() []APIPort {
var mapping []APIPort
for port, bindings := range settings.Ports {
p, _ := parsePort(port.Port())
if len(bindings) == 0 {
mapping = append(mapping, APIPort{
PublicPort: int64(p),
Type: port.Proto(),
})
continue
}
for _, binding := range bindings {
p, _ := parsePort(port.Port())
h, _ := parsePort(binding.HostPort)
mapping = append(mapping, APIPort{
PrivatePort: int64(p),
PublicPort: int64(h),
Type: port.Proto(),
IP: binding.HostIP,
})
}
}
return mapping
}
func parsePort(rawPort string) (int, error) {
port, err := strconv.ParseUint(rawPort, 10, 16)
if err != nil {
return 0, err
}
return int(port), nil
}
// Config is the list of configuration options used when creating a container.
// Config does not contain the options that are specific to starting a container on a
// given host. Those are contained in HostConfig
type Config struct {
Hostname string `json:"Hostname,omitempty" yaml:"Hostname,omitempty"`
Domainname string `json:"Domainname,omitempty" yaml:"Domainname,omitempty"`
User string `json:"User,omitempty" yaml:"User,omitempty"`
Memory int64 `json:"Memory,omitempty" yaml:"Memory,omitempty"`
MemorySwap int64 `json:"MemorySwap,omitempty" yaml:"MemorySwap,omitempty"`
CPUShares int64 `json:"CpuShares,omitempty" yaml:"CpuShares,omitempty"`
CPUSet string `json:"Cpuset,omitempty" yaml:"Cpuset,omitempty"`
AttachStdin bool `json:"AttachStdin,omitempty" yaml:"AttachStdin,omitempty"`
AttachStdout bool `json:"AttachStdout,omitempty" yaml:"AttachStdout,omitempty"`
AttachStderr bool `json:"AttachStderr,omitempty" yaml:"AttachStderr,omitempty"`
PortSpecs []string `json:"PortSpecs,omitempty" yaml:"PortSpecs,omitempty"`
ExposedPorts map[Port]struct{} `json:"ExposedPorts,omitempty" yaml:"ExposedPorts,omitempty"`
Tty bool `json:"Tty,omitempty" yaml:"Tty,omitempty"`
OpenStdin bool `json:"OpenStdin,omitempty" yaml:"OpenStdin,omitempty"`
StdinOnce bool `json:"StdinOnce,omitempty" yaml:"StdinOnce,omitempty"`
Env []string `json:"Env,omitempty" yaml:"Env,omitempty"`
Cmd []string `json:"Cmd" yaml:"Cmd"`
DNS []string `json:"Dns,omitempty" yaml:"Dns,omitempty"` // For Docker API v1.9 and below only
Image string `json:"Image,omitempty" yaml:"Image,omitempty"`
Volumes map[string]struct{} `json:"Volumes,omitempty" yaml:"Volumes,omitempty"`
VolumeDriver string `json:"VolumeDriver,omitempty" yaml:"VolumeDriver,omitempty"`
VolumesFrom string `json:"VolumesFrom,omitempty" yaml:"VolumesFrom,omitempty"`
WorkingDir string `json:"WorkingDir,omitempty" yaml:"WorkingDir,omitempty"`
MacAddress string `json:"MacAddress,omitempty" yaml:"MacAddress,omitempty"`
Entrypoint []string `json:"Entrypoint" yaml:"Entrypoint"`
NetworkDisabled bool `json:"NetworkDisabled,omitempty" yaml:"NetworkDisabled,omitempty"`
SecurityOpts []string `json:"SecurityOpts,omitempty" yaml:"SecurityOpts,omitempty"`
OnBuild []string `json:"OnBuild,omitempty" yaml:"OnBuild,omitempty"`
Mounts []Mount `json:"Mounts,omitempty" yaml:"Mounts,omitempty"`
Labels map[string]string `json:"Labels,omitempty" yaml:"Labels,omitempty"`
}
// Mount represents a mount point in the container.
//
// It has been added in the version 1.20 of the Docker API, available since
// Docker 1.8.
type Mount struct {
Source string
Destination string
Mode string
RW bool
}
// LogConfig defines the log driver type and the configuration for it.
type LogConfig struct {
Type string `json:"Type,omitempty" yaml:"Type,omitempty"`
Config map[string]string `json:"Config,omitempty" yaml:"Config,omitempty"`
}
// ULimit defines system-wide resource limitations
// This can help a lot in system administration, e.g. when a user starts too many processes and therefore makes the system unresponsive for other users.
type ULimit struct {
Name string `json:"Name,omitempty" yaml:"Name,omitempty"`
Soft int64 `json:"Soft,omitempty" yaml:"Soft,omitempty"`
Hard int64 `json:"Hard,omitempty" yaml:"Hard,omitempty"`
}
// SwarmNode containers information about which Swarm node the container is on
type SwarmNode struct {
ID string `json:"ID,omitempty" yaml:"ID,omitempty"`
IP string `json:"IP,omitempty" yaml:"IP,omitempty"`
Addr string `json:"Addr,omitempty" yaml:"Addr,omitempty"`
Name string `json:"Name,omitempty" yaml:"Name,omitempty"`
CPUs int64 `json:"CPUs,omitempty" yaml:"CPUs,omitempty"`
Memory int64 `json:"Memory,omitempty" yaml:"Memory,omitempty"`
Labels map[string]string `json:"Labels,omitempty" yaml:"Labels,omitempty"`
}
// Container is the type encompasing everything about a container - its config,
// hostconfig, etc.
type Container struct {
ID string `json:"Id" yaml:"Id"`
Created time.Time `json:"Created,omitempty" yaml:"Created,omitempty"`
Path string `json:"Path,omitempty" yaml:"Path,omitempty"`
Args []string `json:"Args,omitempty" yaml:"Args,omitempty"`
Config *Config `json:"Config,omitempty" yaml:"Config,omitempty"`
State State `json:"State,omitempty" yaml:"State,omitempty"`
Image string `json:"Image,omitempty" yaml:"Image,omitempty"`
Node *SwarmNode `json:"Node,omitempty" yaml:"Node,omitempty"`
NetworkSettings *NetworkSettings `json:"NetworkSettings,omitempty" yaml:"NetworkSettings,omitempty"`
SysInitPath string `json:"SysInitPath,omitempty" yaml:"SysInitPath,omitempty"`
ResolvConfPath string `json:"ResolvConfPath,omitempty" yaml:"ResolvConfPath,omitempty"`
HostnamePath string `json:"HostnamePath,omitempty" yaml:"HostnamePath,omitempty"`
HostsPath string `json:"HostsPath,omitempty" yaml:"HostsPath,omitempty"`
LogPath string `json:"LogPath,omitempty" yaml:"LogPath,omitempty"`
Name string `json:"Name,omitempty" yaml:"Name,omitempty"`
Driver string `json:"Driver,omitempty" yaml:"Driver,omitempty"`
Volumes map[string]string `json:"Volumes,omitempty" yaml:"Volumes,omitempty"`
VolumesRW map[string]bool `json:"VolumesRW,omitempty" yaml:"VolumesRW,omitempty"`
HostConfig *HostConfig `json:"HostConfig,omitempty" yaml:"HostConfig,omitempty"`
ExecIDs []string `json:"ExecIDs,omitempty" yaml:"ExecIDs,omitempty"`
RestartCount int `json:"RestartCount,omitempty" yaml:"RestartCount,omitempty"`
AppArmorProfile string `json:"AppArmorProfile,omitempty" yaml:"AppArmorProfile,omitempty"`
}
// RenameContainerOptions specify parameters to the RenameContainer function.
//
// See https://goo.gl/laSOIy for more details.
type RenameContainerOptions struct {
// ID of container to rename
ID string `qs:"-"`
// New name
Name string `json:"name,omitempty" yaml:"name,omitempty"`
}
// RenameContainer updates and existing containers name
//
// See https://goo.gl/laSOIy for more details.
func (c *Client) RenameContainer(opts RenameContainerOptions) error {
_, _, err := c.do("POST", fmt.Sprintf("/containers/"+opts.ID+"/rename?%s", queryString(opts)), doOptions{})
return err
}
// InspectContainer returns information about a container by its ID.
//
// See https://goo.gl/RdIq0b for more details.
func (c *Client) InspectContainer(id string) (*Container, error) {
path := "/containers/" + id + "/json"
body, status, err := c.do("GET", path, doOptions{})
if status == http.StatusNotFound {
return nil, &NoSuchContainer{ID: id}
}
if err != nil {
return nil, err
}
var container Container
err = json.Unmarshal(body, &container)
if err != nil {
return nil, err
}
return &container, nil
}
// ContainerChanges returns changes in the filesystem of the given container.
//
// See https://goo.gl/9GsTIF for more details.
func (c *Client) ContainerChanges(id string) ([]Change, error) {
path := "/containers/" + id + "/changes"
body, status, err := c.do("GET", path, doOptions{})
if status == http.StatusNotFound {
return nil, &NoSuchContainer{ID: id}
}
if err != nil {
return nil, err
}
var changes []Change
err = json.Unmarshal(body, &changes)
if err != nil {
return nil, err
}
return changes, nil
}
// CreateContainerOptions specify parameters to the CreateContainer function.
//
// See https://goo.gl/WxQzrr for more details.
type CreateContainerOptions struct {
Name string
Config *Config `qs:"-"`
HostConfig *HostConfig `qs:"-"`
}
// CreateContainer creates a new container, returning the container instance,
// or an error in case of failure.
//
// See https://goo.gl/WxQzrr for more details.
func (c *Client) CreateContainer(opts CreateContainerOptions) (*Container, error) {
path := "/containers/create?" + queryString(opts)
body, status, err := c.do(
"POST",
path,
doOptions{
data: struct {
*Config
HostConfig *HostConfig `json:"HostConfig,omitempty" yaml:"HostConfig,omitempty"`
}{
opts.Config,
opts.HostConfig,
},
},
)
if status == http.StatusNotFound {
return nil, ErrNoSuchImage
}
if status == http.StatusConflict {
return nil, ErrContainerAlreadyExists
}
if err != nil {
return nil, err
}
var container Container
err = json.Unmarshal(body, &container)
if err != nil {
return nil, err
}
container.Name = opts.Name
return &container, nil
}
// KeyValuePair is a type for generic key/value pairs as used in the Lxc
// configuration
type KeyValuePair struct {
Key string `json:"Key,omitempty" yaml:"Key,omitempty"`
Value string `json:"Value,omitempty" yaml:"Value,omitempty"`
}
// RestartPolicy represents the policy for automatically restarting a container.
//
// Possible values are:
//
// - always: the docker daemon will always restart the container
// - on-failure: the docker daemon will restart the container on failures, at
// most MaximumRetryCount times
// - no: the docker daemon will not restart the container automatically
type RestartPolicy struct {
Name string `json:"Name,omitempty" yaml:"Name,omitempty"`
MaximumRetryCount int `json:"MaximumRetryCount,omitempty" yaml:"MaximumRetryCount,omitempty"`
}
// AlwaysRestart returns a restart policy that tells the Docker daemon to
// always restart the container.
func AlwaysRestart() RestartPolicy {
return RestartPolicy{Name: "always"}
}
// RestartOnFailure returns a restart policy that tells the Docker daemon to
// restart the container on failures, trying at most maxRetry times.
func RestartOnFailure(maxRetry int) RestartPolicy {
return RestartPolicy{Name: "on-failure", MaximumRetryCount: maxRetry}
}
// NeverRestart returns a restart policy that tells the Docker daemon to never
// restart the container on failures.
func NeverRestart() RestartPolicy {
return RestartPolicy{Name: "no"}
}
// Device represents a device mapping between the Docker host and the
// container.
type Device struct {
PathOnHost string `json:"PathOnHost,omitempty" yaml:"PathOnHost,omitempty"`
PathInContainer string `json:"PathInContainer,omitempty" yaml:"PathInContainer,omitempty"`
CgroupPermissions string `json:"CgroupPermissions,omitempty" yaml:"CgroupPermissions,omitempty"`
}
// HostConfig contains the container options related to starting a container on
// a given host
type HostConfig struct {
Binds []string `json:"Binds,omitempty" yaml:"Binds,omitempty"`
CapAdd []string `json:"CapAdd,omitempty" yaml:"CapAdd,omitempty"`
CapDrop []string `json:"CapDrop,omitempty" yaml:"CapDrop,omitempty"`
ContainerIDFile string `json:"ContainerIDFile,omitempty" yaml:"ContainerIDFile,omitempty"`
LxcConf []KeyValuePair `json:"LxcConf,omitempty" yaml:"LxcConf,omitempty"`
Privileged bool `json:"Privileged,omitempty" yaml:"Privileged,omitempty"`
PortBindings map[Port][]PortBinding `json:"PortBindings,omitempty" yaml:"PortBindings,omitempty"`
Links []string `json:"Links,omitempty" yaml:"Links,omitempty"`
PublishAllPorts bool `json:"PublishAllPorts,omitempty" yaml:"PublishAllPorts,omitempty"`
DNS []string `json:"Dns,omitempty" yaml:"Dns,omitempty"` // For Docker API v1.10 and above only
DNSSearch []string `json:"DnsSearch,omitempty" yaml:"DnsSearch,omitempty"`
ExtraHosts []string `json:"ExtraHosts,omitempty" yaml:"ExtraHosts,omitempty"`
VolumesFrom []string `json:"VolumesFrom,omitempty" yaml:"VolumesFrom,omitempty"`
NetworkMode string `json:"NetworkMode,omitempty" yaml:"NetworkMode,omitempty"`
IpcMode string `json:"IpcMode,omitempty" yaml:"IpcMode,omitempty"`
PidMode string `json:"PidMode,omitempty" yaml:"PidMode,omitempty"`
UTSMode string `json:"UTSMode,omitempty" yaml:"UTSMode,omitempty"`
RestartPolicy RestartPolicy `json:"RestartPolicy,omitempty" yaml:"RestartPolicy,omitempty"`
Devices []Device `json:"Devices,omitempty" yaml:"Devices,omitempty"`
LogConfig LogConfig `json:"LogConfig,omitempty" yaml:"LogConfig,omitempty"`
ReadonlyRootfs bool `json:"ReadonlyRootfs,omitempty" yaml:"ReadonlyRootfs,omitempty"`
SecurityOpt []string `json:"SecurityOpt,omitempty" yaml:"SecurityOpt,omitempty"`
CgroupParent string `json:"CgroupParent,omitempty" yaml:"CgroupParent,omitempty"`
Memory int64 `json:"Memory,omitempty" yaml:"Memory,omitempty"`
MemorySwap int64 `json:"MemorySwap,omitempty" yaml:"MemorySwap,omitempty"`
MemorySwappiness int64 `json:"MemorySwappiness,omitempty" yaml:"MemorySwappiness,omitempty"`
OOMKillDisable bool `json:"OomKillDisable,omitempty" yaml:"OomKillDisable"`
CPUShares int64 `json:"CpuShares,omitempty" yaml:"CpuShares,omitempty"`
CPUSet string `json:"Cpuset,omitempty" yaml:"Cpuset,omitempty"`
CPUSetCPUs string `json:"CpusetCpus,omitempty" yaml:"CpusetCpus,omitempty"`
CPUSetMEMs string `json:"CpusetMems,omitempty" yaml:"CpusetMems,omitempty"`
CPUQuota int64 `json:"CpuQuota,omitempty" yaml:"CpuQuota,omitempty"`
CPUPeriod int64 `json:"CpuPeriod,omitempty" yaml:"CpuPeriod,omitempty"`
BlkioWeight int64 `json:"BlkioWeight,omitempty" yaml:"BlkioWeight"`
Ulimits []ULimit `json:"Ulimits,omitempty" yaml:"Ulimits,omitempty"`
}
// StartContainer starts a container, returning an error in case of failure.
//
// See https://goo.gl/MrBAJv for more details.
func (c *Client) StartContainer(id string, hostConfig *HostConfig) error {
path := "/containers/" + id + "/start"
_, status, err := c.do("POST", path, doOptions{data: hostConfig, forceJSON: true})
if status == http.StatusNotFound {
return &NoSuchContainer{ID: id, Err: err}
}
if status == http.StatusNotModified {
return &ContainerAlreadyRunning{ID: id}
}
if err != nil {
return err
}
return nil
}
// StopContainer stops a container, killing it after the given timeout (in
// seconds).
//
// See https://goo.gl/USqsFt for more details.
func (c *Client) StopContainer(id string, timeout uint) error {
path := fmt.Sprintf("/containers/%s/stop?t=%d", id, timeout)
_, status, err := c.do("POST", path, doOptions{})
if status == http.StatusNotFound {
return &NoSuchContainer{ID: id}
}
if status == http.StatusNotModified {
return &ContainerNotRunning{ID: id}
}
if err != nil {
return err
}
return nil
}
// RestartContainer stops a container, killing it after the given timeout (in
// seconds), during the stop process.
//
// See https://goo.gl/QzsDnz for more details.
func (c *Client) RestartContainer(id string, timeout uint) error {
path := fmt.Sprintf("/containers/%s/restart?t=%d", id, timeout)
_, status, err := c.do("POST", path, doOptions{})
if status == http.StatusNotFound {
return &NoSuchContainer{ID: id}
}
if err != nil {
return err
}
return nil
}
// PauseContainer pauses the given container.
//
// See https://goo.gl/OF7W9X for more details.
func (c *Client) PauseContainer(id string) error {
path := fmt.Sprintf("/containers/%s/pause", id)
_, status, err := c.do("POST", path, doOptions{})
if status == http.StatusNotFound {
return &NoSuchContainer{ID: id}
}
if err != nil {
return err
}
return nil
}
// UnpauseContainer unpauses the given container.
//
// See https://goo.gl/7dwyPA for more details.
func (c *Client) UnpauseContainer(id string) error {
path := fmt.Sprintf("/containers/%s/unpause", id)
_, status, err := c.do("POST", path, doOptions{})
if status == http.StatusNotFound {
return &NoSuchContainer{ID: id}
}
if err != nil {
return err
}
return nil
}
// TopResult represents the list of processes running in a container, as
// returned by /containers/<id>/top.
//
// See https://goo.gl/Rb46aY for more details.
type TopResult struct {
Titles []string
Processes [][]string
}
// TopContainer returns processes running inside a container
//
// See https://goo.gl/Rb46aY for more details.
func (c *Client) TopContainer(id string, psArgs string) (TopResult, error) {
var args string
var result TopResult
if psArgs != "" {
args = fmt.Sprintf("?ps_args=%s", psArgs)
}
path := fmt.Sprintf("/containers/%s/top%s", id, args)
body, status, err := c.do("GET", path, doOptions{})
if status == http.StatusNotFound {
return result, &NoSuchContainer{ID: id}
}
if err != nil {
return result, err
}
err = json.Unmarshal(body, &result)
if err != nil {
return result, err
}
return result, nil
}
// Stats represents container statistics, returned by /containers/<id>/stats.
//
// See https://goo.gl/GNmLHb for more details.
type Stats struct {
Read time.Time `json:"read,omitempty" yaml:"read,omitempty"`
Network struct {
RxDropped uint64 `json:"rx_dropped,omitempty" yaml:"rx_dropped,omitempty"`
RxBytes uint64 `json:"rx_bytes,omitempty" yaml:"rx_bytes,omitempty"`
RxErrors uint64 `json:"rx_errors,omitempty" yaml:"rx_errors,omitempty"`
TxPackets uint64 `json:"tx_packets,omitempty" yaml:"tx_packets,omitempty"`
TxDropped uint64 `json:"tx_dropped,omitempty" yaml:"tx_dropped,omitempty"`
RxPackets uint64 `json:"rx_packets,omitempty" yaml:"rx_packets,omitempty"`
TxErrors uint64 `json:"tx_errors,omitempty" yaml:"tx_errors,omitempty"`
TxBytes uint64 `json:"tx_bytes,omitempty" yaml:"tx_bytes,omitempty"`
} `json:"network,omitempty" yaml:"network,omitempty"`
MemoryStats struct {
Stats struct {
TotalPgmafault uint64 `json:"total_pgmafault,omitempty" yaml:"total_pgmafault,omitempty"`
Cache uint64 `json:"cache,omitempty" yaml:"cache,omitempty"`
MappedFile uint64 `json:"mapped_file,omitempty" yaml:"mapped_file,omitempty"`
TotalInactiveFile uint64 `json:"total_inactive_file,omitempty" yaml:"total_inactive_file,omitempty"`
Pgpgout uint64 `json:"pgpgout,omitempty" yaml:"pgpgout,omitempty"`
Rss uint64 `json:"rss,omitempty" yaml:"rss,omitempty"`
TotalMappedFile uint64 `json:"total_mapped_file,omitempty" yaml:"total_mapped_file,omitempty"`
Writeback uint64 `json:"writeback,omitempty" yaml:"writeback,omitempty"`
Unevictable uint64 `json:"unevictable,omitempty" yaml:"unevictable,omitempty"`
Pgpgin uint64 `json:"pgpgin,omitempty" yaml:"pgpgin,omitempty"`
TotalUnevictable uint64 `json:"total_unevictable,omitempty" yaml:"total_unevictable,omitempty"`
Pgmajfault uint64 `json:"pgmajfault,omitempty" yaml:"pgmajfault,omitempty"`
TotalRss uint64 `json:"total_rss,omitempty" yaml:"total_rss,omitempty"`
TotalRssHuge uint64 `json:"total_rss_huge,omitempty" yaml:"total_rss_huge,omitempty"`
TotalWriteback uint64 `json:"total_writeback,omitempty" yaml:"total_writeback,omitempty"`
TotalInactiveAnon uint64 `json:"total_inactive_anon,omitempty" yaml:"total_inactive_anon,omitempty"`
RssHuge uint64 `json:"rss_huge,omitempty" yaml:"rss_huge,omitempty"`
HierarchicalMemoryLimit uint64 `json:"hierarchical_memory_limit,omitempty" yaml:"hierarchical_memory_limit,omitempty"`
TotalPgfault uint64 `json:"total_pgfault,omitempty" yaml:"total_pgfault,omitempty"`
TotalActiveFile uint64 `json:"total_active_file,omitempty" yaml:"total_active_file,omitempty"`
ActiveAnon uint64 `json:"active_anon,omitempty" yaml:"active_anon,omitempty"`
TotalActiveAnon uint64 `json:"total_active_anon,omitempty" yaml:"total_active_anon,omitempty"`
TotalPgpgout uint64 `json:"total_pgpgout,omitempty" yaml:"total_pgpgout,omitempty"`
TotalCache uint64 `json:"total_cache,omitempty" yaml:"total_cache,omitempty"`
InactiveAnon uint64 `json:"inactive_anon,omitempty" yaml:"inactive_anon,omitempty"`
ActiveFile uint64 `json:"active_file,omitempty" yaml:"active_file,omitempty"`
Pgfault uint64 `json:"pgfault,omitempty" yaml:"pgfault,omitempty"`
InactiveFile uint64 `json:"inactive_file,omitempty" yaml:"inactive_file,omitempty"`
TotalPgpgin uint64 `json:"total_pgpgin,omitempty" yaml:"total_pgpgin,omitempty"`
} `json:"stats,omitempty" yaml:"stats,omitempty"`
MaxUsage uint64 `json:"max_usage,omitempty" yaml:"max_usage,omitempty"`
Usage uint64 `json:"usage,omitempty" yaml:"usage,omitempty"`
Failcnt uint64 `json:"failcnt,omitempty" yaml:"failcnt,omitempty"`
Limit uint64 `json:"limit,omitempty" yaml:"limit,omitempty"`
} `json:"memory_stats,omitempty" yaml:"memory_stats,omitempty"`
BlkioStats struct {
IOServiceBytesRecursive []BlkioStatsEntry `json:"io_service_bytes_recursive,omitempty" yaml:"io_service_bytes_recursive,omitempty"`
IOServicedRecursive []BlkioStatsEntry `json:"io_serviced_recursive,omitempty" yaml:"io_serviced_recursive,omitempty"`
IOQueueRecursive []BlkioStatsEntry `json:"io_queue_recursive,omitempty" yaml:"io_queue_recursive,omitempty"`
IOServiceTimeRecursive []BlkioStatsEntry `json:"io_service_time_recursive,omitempty" yaml:"io_service_time_recursive,omitempty"`
IOWaitTimeRecursive []BlkioStatsEntry `json:"io_wait_time_recursive,omitempty" yaml:"io_wait_time_recursive,omitempty"`
IOMergedRecursive []BlkioStatsEntry `json:"io_merged_recursive,omitempty" yaml:"io_merged_recursive,omitempty"`
IOTimeRecursive []BlkioStatsEntry `json:"io_time_recursive,omitempty" yaml:"io_time_recursive,omitempty"`
SectorsRecursive []BlkioStatsEntry `json:"sectors_recursive,omitempty" yaml:"sectors_recursive,omitempty"`
} `json:"blkio_stats,omitempty" yaml:"blkio_stats,omitempty"`
CPUStats CPUStats `json:"cpu_stats,omitempty" yaml:"cpu_stats,omitempty"`
PreCPUStats CPUStats `json:"precpu_stats,omitempty"`
}
// CPUStats is a stats entry for cpu stats
type CPUStats struct {
CPUUsage struct {
PercpuUsage []uint64 `json:"percpu_usage,omitempty" yaml:"percpu_usage,omitempty"`
UsageInUsermode uint64 `json:"usage_in_usermode,omitempty" yaml:"usage_in_usermode,omitempty"`
TotalUsage uint64 `json:"total_usage,omitempty" yaml:"total_usage,omitempty"`
UsageInKernelmode uint64 `json:"usage_in_kernelmode,omitempty" yaml:"usage_in_kernelmode,omitempty"`
} `json:"cpu_usage,omitempty" yaml:"cpu_usage,omitempty"`
SystemCPUUsage uint64 `json:"system_cpu_usage,omitempty" yaml:"system_cpu_usage,omitempty"`
ThrottlingData struct {
Periods uint64 `json:"periods,omitempty"`
ThrottledPeriods uint64 `json:"throttled_periods,omitempty"`
ThrottledTime uint64 `json:"throttled_time,omitempty"`
} `json:"throttling_data,omitempty" yaml:"throttling_data,omitempty"`
}
// BlkioStatsEntry is a stats entry for blkio_stats
type BlkioStatsEntry struct {
Major uint64 `json:"major,omitempty" yaml:"major,omitempty"`
Minor uint64 `json:"minor,omitempty" yaml:"minor,omitempty"`
Op string `json:"op,omitempty" yaml:"op,omitempty"`
Value uint64 `json:"value,omitempty" yaml:"value,omitempty"`
}
// StatsOptions specify parameters to the Stats function.
//
// See https://goo.gl/GNmLHb for more details.
type StatsOptions struct {
ID string
Stats chan<- *Stats
Stream bool
// A flag that enables stopping the stats operation
Done <-chan bool
// Initial connection timeout
Timeout time.Duration
}
// Stats sends container statistics for the given container to the given channel.
//
// This function is blocking, similar to a streaming call for logs, and should be run
// on a separate goroutine from the caller. Note that this function will block until
// the given container is removed, not just exited. When finished, this function
// will close the given channel. Alternatively, function can be stopped by
// signaling on the Done channel.
//
// See https://goo.gl/GNmLHb for more details.
func (c *Client) Stats(opts StatsOptions) (retErr error) {
errC := make(chan error, 1)
readCloser, writeCloser := io.Pipe()
defer func() {
close(opts.Stats)
select {
case err := <-errC:
if err != nil && retErr == nil {
retErr = err
}
default:
// No errors
}
if err := readCloser.Close(); err != nil && retErr == nil {
retErr = err
}
}()
go func() {
err := c.stream("GET", fmt.Sprintf("/containers/%s/stats?stream=%v", opts.ID, opts.Stream), streamOptions{
rawJSONStream: true,
useJSONDecoder: true,
stdout: writeCloser,
timeout: opts.Timeout,
})
if err != nil {
dockerError, ok := err.(*Error)
if ok {
if dockerError.Status == http.StatusNotFound {
err = &NoSuchContainer{ID: opts.ID}
}
}
}
if closeErr := writeCloser.Close(); closeErr != nil && err == nil {
err = closeErr
}
errC <- err
close(errC)
}()
quit := make(chan struct{})
defer close(quit)
go func() {
// block here waiting for the signal to stop function
select {
case <-opts.Done:
readCloser.Close()
case <-quit:
return
}
}()
decoder := json.NewDecoder(readCloser)
stats := new(Stats)
for err := decoder.Decode(&stats); err != io.EOF; err = decoder.Decode(stats) {
if err != nil {
return err
}
opts.Stats <- stats
stats = new(Stats)
}
return nil
}
// KillContainerOptions represents the set of options that can be used in a
// call to KillContainer.
//
// See https://goo.gl/hkS9i8 for more details.
type KillContainerOptions struct {
// The ID of the container.
ID string `qs:"-"`
// The signal to send to the container. When omitted, Docker server
// will assume SIGKILL.
Signal Signal
}
// KillContainer sends a signal to a container, returning an error in case of
// failure.
//
// See https://goo.gl/hkS9i8 for more details.
func (c *Client) KillContainer(opts KillContainerOptions) error {
path := "/containers/" + opts.ID + "/kill" + "?" + queryString(opts)
_, status, err := c.do("POST", path, doOptions{})
if status == http.StatusNotFound {
return &NoSuchContainer{ID: opts.ID}
}
if err != nil {
return err
}
return nil
}
// RemoveContainerOptions encapsulates options to remove a container.
//
// See https://goo.gl/RQyX62 for more details.
type RemoveContainerOptions struct {
// The ID of the container.
ID string `qs:"-"`
// A flag that indicates whether Docker should remove the volumes
// associated to the container.
RemoveVolumes bool `qs:"v"`
// A flag that indicates whether Docker should remove the container
// even if it is currently running.
Force bool
}
// RemoveContainer removes a container, returning an error in case of failure.
//
// See https://goo.gl/RQyX62 for more details.
func (c *Client) RemoveContainer(opts RemoveContainerOptions) error {
path := "/containers/" + opts.ID + "?" + queryString(opts)
_, status, err := c.do("DELETE", path, doOptions{})
if status == http.StatusNotFound {
return &NoSuchContainer{ID: opts.ID}
}
if err != nil {
return err
}
return nil
}
// PutContainerArchiveOptions is the set of options that can be used when
// uploading an archive into a container.
//
// See https://goo.gl/Ss97HW for more details.
type PutContainerArchiveOptions struct {
InputStream io.Reader `json:"-" qs:"-"`
Path string `qs:"path"`
NoOverwriteDirNonDir bool `qs:"noOverwriteDirNonDir"`
}
// PutContainerArchive uploads a tar archive to be extracted to a path in the
// filesystem of the container.
//
func (c *Client) PutContainerArchive(id string, opts PutContainerArchiveOptions) error {
url := fmt.Sprintf("/containers/%s/archive?", id) + queryString(opts)
return c.stream("PUT", url, streamOptions{
in: opts.InputStream,
})
}
// CopyFromContainerOptions is the set of options that can be used when copying
// files or folders from a container.
//
// See https://goo.gl/4L7b07 for more details.
type CopyFromContainerOptions struct {
OutputStream io.Writer `json:"-"`
Container string `json:"-"`
Resource string
}
// CopyFromContainer copy files or folders from a container, using a given
// resource.
//
// See https://goo.gl/4L7b07 for more details.
func (c *Client) CopyFromContainer(opts CopyFromContainerOptions) error {
if opts.Container == "" {
return &NoSuchContainer{ID: opts.Container}
}
url := fmt.Sprintf("/containers/%s/copy", opts.Container)
body, status, err := c.do("POST", url, doOptions{data: opts})
if status == http.StatusNotFound {
return &NoSuchContainer{ID: opts.Container}
}
if err != nil {
return err
}
_, err = io.Copy(opts.OutputStream, bytes.NewBuffer(body))
return err
}
// WaitContainer blocks until the given container stops, return the exit code
// of the container status.
//
// See https://goo.gl/Gc1rge for more details.
func (c *Client) WaitContainer(id string) (int, error) {
body, status, err := c.do("POST", "/containers/"+id+"/wait", doOptions{})
if status == http.StatusNotFound {
return 0, &NoSuchContainer{ID: id}
}
if err != nil {
return 0, err
}
var r struct{ StatusCode int }
err = json.Unmarshal(body, &r)
if err != nil {
return 0, err
}
return r.StatusCode, nil
}
// CommitContainerOptions aggregates parameters to the CommitContainer method.
//
// See https://goo.gl/mqfoCw for more details.
type CommitContainerOptions struct {
Container string
Repository string `qs:"repo"`
Tag string
Message string `qs:"m"`
Author string
Run *Config `qs:"-"`
}
// CommitContainer creates a new image from a container's changes.
//
// See https://goo.gl/mqfoCw for more details.
func (c *Client) CommitContainer(opts CommitContainerOptions) (*Image, error) {
path := "/commit?" + queryString(opts)
body, status, err := c.do("POST", path, doOptions{data: opts.Run})
if status == http.StatusNotFound {
return nil, &NoSuchContainer{ID: opts.Container}
}
if err != nil {
return nil, err
}
var image Image
err = json.Unmarshal(body, &image)
if err != nil {
return nil, err
}
return &image, nil
}
// AttachToContainerOptions is the set of options that can be used when
// attaching to a container.
//
// See https://goo.gl/NKpkFk for more details.
type AttachToContainerOptions struct {
Container string `qs:"-"`
InputStream io.Reader `qs:"-"`
OutputStream io.Writer `qs:"-"`
ErrorStream io.Writer `qs:"-"`
// Get container logs, sending it to OutputStream.
Logs bool
// Stream the response?
Stream bool
// Attach to stdin, and use InputStream.
Stdin bool
// Attach to stdout, and use OutputStream.
Stdout bool
// Attach to stderr, and use ErrorStream.
Stderr bool
// If set, after a successful connect, a sentinel will be sent and then the
// client will block on receive before continuing.
//
// It must be an unbuffered channel. Using a buffered channel can lead
// to unexpected behavior.
Success chan struct{}
// Use raw terminal? Usually true when the container contains a TTY.
RawTerminal bool `qs:"-"`
}
// AttachToContainer attaches to a container, using the given options.
//
// See https://goo.gl/NKpkFk for more details.
func (c *Client) AttachToContainer(opts AttachToContainerOptions) error {
if opts.Container == "" {
return &NoSuchContainer{ID: opts.Container}
}
path := "/containers/" + opts.Container + "/attach?" + queryString(opts)
return c.hijack("POST", path, hijackOptions{
success: opts.Success,
setRawTerminal: opts.RawTerminal,
in: opts.InputStream,
stdout: opts.OutputStream,
stderr: opts.ErrorStream,
})
}
// LogsOptions represents the set of options used when getting logs from a
// container.
//
// See https://goo.gl/yl8PGm for more details.
type LogsOptions struct {
Container string `qs:"-"`
OutputStream io.Writer `qs:"-"`
ErrorStream io.Writer `qs:"-"`
Follow bool
Stdout bool
Stderr bool
Since int64
Timestamps bool
Tail string
// Use raw terminal? Usually true when the container contains a TTY.
RawTerminal bool `qs:"-"`
}
// Logs gets stdout and stderr logs from the specified container.
//
// See https://goo.gl/yl8PGm for more details.
func (c *Client) Logs(opts LogsOptions) error {
if opts.Container == "" {
return &NoSuchContainer{ID: opts.Container}
}
if opts.Tail == "" {
opts.Tail = "all"
}
path := "/containers/" + opts.Container + "/logs?" + queryString(opts)
return c.stream("GET", path, streamOptions{
setRawTerminal: opts.RawTerminal,
stdout: opts.OutputStream,
stderr: opts.ErrorStream,
})
}
// ResizeContainerTTY resizes the terminal to the given height and width.
//
// See https://goo.gl/xERhCc for more details.
func (c *Client) ResizeContainerTTY(id string, height, width int) error {
params := make(url.Values)
params.Set("h", strconv.Itoa(height))
params.Set("w", strconv.Itoa(width))
_, _, err := c.do("POST", "/containers/"+id+"/resize?"+params.Encode(), doOptions{})
return err
}
// ExportContainerOptions is the set of parameters to the ExportContainer
// method.
//
// See https://goo.gl/dOkTyk for more details.
type ExportContainerOptions struct {
ID string
OutputStream io.Writer
}
// ExportContainer export the contents of container id as tar archive
// and prints the exported contents to stdout.
//
// See https://goo.gl/dOkTyk for more details.
func (c *Client) ExportContainer(opts ExportContainerOptions) error {
if opts.ID == "" {
return &NoSuchContainer{ID: opts.ID}
}
url := fmt.Sprintf("/containers/%s/export", opts.ID)
return c.stream("GET", url, streamOptions{
setRawTerminal: true,
stdout: opts.OutputStream,
})
}
// NoSuchContainer is the error returned when a given container does not exist.
type NoSuchContainer struct {
ID string
Err error
}
func (err *NoSuchContainer) Error() string {
if err.Err != nil {
return err.Err.Error()
}
return "No such container: " + err.ID
}
// ContainerAlreadyRunning is the error returned when a given container is
// already running.
type ContainerAlreadyRunning struct {
ID string
}
func (err *ContainerAlreadyRunning) Error() string {
return "Container already running: " + err.ID
}
// ContainerNotRunning is the error returned when a given container is not
// running.
type ContainerNotRunning struct {
ID string
}
func (err *ContainerNotRunning) Error() string {
return "Container not running: " + err.ID
}
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