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// Copyright 2013 go-dockerclient authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package docker
import (
"context"
"encoding/json"
"net"
"net/http"
"strings"
"github.com/docker/docker/api/types/swarm"
)
// Version returns version information about the docker server.
//
// See https://goo.gl/mU7yje for more details.
func (c *Client) Version() (*Env, error) {
return c.VersionWithContext(context.TODO())
}
// VersionWithContext returns version information about the docker server.
func (c *Client) VersionWithContext(ctx context.Context) (*Env, error) {
resp, err := c.do(http.MethodGet, "/version", doOptions{context: ctx})
if err != nil {
return nil, err
}
defer resp.Body.Close()
var env Env
if err := env.Decode(resp.Body); err != nil {
return nil, err
}
return &env, nil
}
// DockerInfo contains information about the Docker server
//
// See https://goo.gl/bHUoz9 for more details.
type DockerInfo struct {
ID string
Containers int
ContainersRunning int
ContainersPaused int
ContainersStopped int
Images int
Driver string
DriverStatus [][2]string
SystemStatus [][2]string
Plugins PluginsInfo
NFd int
NGoroutines int
SystemTime string
ExecutionDriver string
LoggingDriver string
CgroupDriver string
NEventsListener int
KernelVersion string
OperatingSystem string
OSType string
Architecture string
IndexServerAddress string
RegistryConfig *ServiceConfig
SecurityOptions []string
NCPU int
MemTotal int64
DockerRootDir string
HTTPProxy string `json:"HttpProxy"`
HTTPSProxy string `json:"HttpsProxy"`
NoProxy string
Name string
Labels []string
ServerVersion string
ClusterStore string
Runtimes map[string]Runtime
ClusterAdvertise string
Isolation string
InitBinary string
DefaultRuntime string
Swarm swarm.Info
LiveRestoreEnabled bool
MemoryLimit bool
SwapLimit bool
KernelMemory bool
CPUCfsPeriod bool `json:"CpuCfsPeriod"`
CPUCfsQuota bool `json:"CpuCfsQuota"`
CPUShares bool
CPUSet bool
IPv4Forwarding bool
BridgeNfIptables bool
BridgeNfIP6tables bool `json:"BridgeNfIp6tables"`
Debug bool
OomKillDisable bool
ExperimentalBuild bool
}
// Runtime describes an OCI runtime
//
// for more information, see: https://dockr.ly/2NKM8qq
type Runtime struct {
Path string
Args []string `json:"runtimeArgs"`
}
// PluginsInfo is a struct with the plugins registered with the docker daemon
//
// for more information, see: https://goo.gl/bHUoz9
type PluginsInfo struct {
// List of Volume plugins registered
Volume []string
// List of Network plugins registered
Network []string
// List of Authorization plugins registered
Authorization []string
}
// ServiceConfig stores daemon registry services configuration.
//
// for more information, see: https://goo.gl/7iFFDz
type ServiceConfig struct {
InsecureRegistryCIDRs []*NetIPNet
IndexConfigs map[string]*IndexInfo
Mirrors []string
}
// NetIPNet is the net.IPNet type, which can be marshalled and
// unmarshalled to JSON.
//
// for more information, see: https://goo.gl/7iFFDz
type NetIPNet net.IPNet
// MarshalJSON returns the JSON representation of the IPNet.
//
func (ipnet *NetIPNet) MarshalJSON() ([]byte, error) {
return json.Marshal((*net.IPNet)(ipnet).String())
}
// UnmarshalJSON sets the IPNet from a byte array of JSON.
//
func (ipnet *NetIPNet) UnmarshalJSON(b []byte) (err error) {
var ipnetStr string
if err = json.Unmarshal(b, &ipnetStr); err == nil {
var cidr *net.IPNet
if _, cidr, err = net.ParseCIDR(ipnetStr); err == nil {
*ipnet = NetIPNet(*cidr)
}
}
return
}
// IndexInfo contains information about a registry.
//
// for more information, see: https://goo.gl/7iFFDz
type IndexInfo struct {
Name string
Mirrors []string
Secure bool
Official bool
}
// Info returns system-wide information about the Docker server.
//
// See https://goo.gl/ElTHi2 for more details.
func (c *Client) Info() (*DockerInfo, error) {
resp, err := c.do(http.MethodGet, "/info", doOptions{})
if err != nil {
return nil, err
}
defer resp.Body.Close()
var info DockerInfo
if err := json.NewDecoder(resp.Body).Decode(&info); err != nil {
return nil, err
}
return &info, nil
}
// ParseRepositoryTag gets the name of the repository and returns it splitted
// in two parts: the repository and the tag. It ignores the digest when it is
// present.
//
// Some examples:
//
// localhost.localdomain:5000/samalba/hipache:latest -> localhost.localdomain:5000/samalba/hipache, latest
// localhost.localdomain:5000/samalba/hipache -> localhost.localdomain:5000/samalba/hipache, ""
// busybox:latest@sha256:4a731fb46adc5cefe3ae374a8b6020fc1b6ad667a279647766e9a3cd89f6fa92 -> busybox, latest
func ParseRepositoryTag(repoTag string) (repository string, tag string) {
parts := strings.SplitN(repoTag, "@", 2)
repoTag = parts[0]
n := strings.LastIndex(repoTag, ":")
if n < 0 {
return repoTag, ""
}
if tag := repoTag[n+1:]; !strings.Contains(tag, "/") {
return repoTag[:n], tag
}
return repoTag, ""
}
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