Ijikwa arịa Docker na Go

Akwụkwọ!

Mgbe ị na-ekpebi ide igwe kwụ otu ebe maka ijide nko site na docker hub ma ọ bụ site na ndekọ iji melite / mee ihe na ihe nkesa na-akpaghị aka, ị nwere ike ịhụ na Docker Cli bara uru, nke ga-enyere aka ijikwa Docker daemon na sistemụ gị.

Iji rụọ ọrụ ị ga-achọ ụdị Go na-erughị 1.9.4

Ọ bụrụ na ị ka gbanweebeghị na modul, wụnye Cli na iwu a:

go get github.com/docker/docker/client

Na-agba ọsọ akpa

Ihe atụ na-esonụ na-egosi otu esi eji Docker API agba akpa. N'ahịrị iwu ị ga-eji iwu ahụ docker run, ma anyị nwere ike ịnagide ọrụ a n'ụzọ dị mfe na ọrụ anyị.
Ọmụmaatụ a dabara na ịgba ọsọ iwu docker run alpine echo hello world

package main {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Делаем docker pull
    reader, err := cli.ImagePull(ctx, "docker.io/library/alpine", types.ImagePullOptions{})
    if err != nil {
        panic(err)
    }
    io.Copy(os.Stdout, reader)

    hostBinding := nat.PortBinding{
        HostIP:   "0.0.0.0",
        HostPort: "8000",
    }
    containerPort, err := nat.NewPort("tcp", "80")
    if err != nil {
        panic("Unable to get the port")
    }
    portBinding := nat.PortMap{containerPort: []nat.PortBinding{hostBinding}}

    // Создаем контейнер с заданной конфигурацией
    resp, err := cli.ContainerCreate(ctx, &container.Config{
        Image: "alpine",
        Cmd:   []string{"echo", "hello world"},
        Tty:   true,
    }, &container.HostConfig{
        PortBindings: portBinding,
    }, nil, "")
    if err != nil {
        panic(err)
    }

    // Запускаем контейнер
    if err := cli.ContainerStart(ctx, resp.ID, types.ContainerStartOptions{}); err != nil {
        panic(err)
    }

    // Получаем логи контейнера
    out, err := cli.ContainerLogs(ctx, resp.ID, types.ContainerLogsOptions{ShowStdout: true})
    if err != nil {
        panic(err)
    }
    io.Copy(os.Stdout, out)
}

Inweta ndepụta nke arịa na-agba ọsọ

Ọmụmaatụ a dabara na ịgba ọsọ iwu docker ps

package main

import (
    "context"
    "fmt"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Получение списка запуцщенных контейнеров(docker ps)
    containers, err := cli.ContainerList(context.Background(), types.ContainerListOptions{})
    if err != nil {
        panic(err)
    }

    // Вывод всех идентификаторов контейнеров
    for _, container := range containers {
        fmt.Println(container.ID)
    }
}

Ịkwụsị akpa niile na-agba ọsọ

Ozugbo ị mụtala ka esi emepụta na ịgbasa arịa, ọ bụ oge ịmụta ka esi ejikwa ha. Ihe atụ na-esonụ ga-akwụsị ihe niile na-agba ọsọ.

Ejila koodu a na ihe nkesa mmepụta!

package main

import (
    "context"
    "fmt"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Получение списка запуцщенных контейнеров(docker ps)
    containers, err := cli.ContainerList(ctx, types.ContainerListOptions{})
    if err != nil {
        panic(err)
    }

    for _, c := range containers {
        fmt.Print("Stopping container ", c.ID[:10], "... ")
        if err := cli.ContainerStop(ctx, c.ID, nil); err != nil {
            panic(err)
        }
        fmt.Println("Success")
    }
}

Na-egosipụta ndekọ maka otu akpa

Ị nwere ike ịrụ ọrụ na akpa nke ọ bụla. Ihe atụ na-esonụ na-egosiputa ndekọ akpa na njirimara akọwapụtara. Tupu ịmalite, ịkwesịrị ịgbanwe ID nke akpa nke ịchọrọ ịnata ndekọ ya.

package main

import (
    "context"
    "io"
    "os"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    options := types.ContainerLogsOptions{ShowStdout: true}
    // Измените id контейнера здесь
    out, err := cli.ContainerLogs(ctx, "f1064a8a4c82", options)
    if err != nil {
        panic(err)
    }
    io.Copy(os.Stdout, out)
}

Inweta ndepụta onyonyo

Ọmụmaatụ a dabara na ịgba ọsọ iwu docker image ls

package main

import (
    "context"
    "fmt"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Получение списка образов
    images, err := cli.ImageList(context.Background(), types.ImageListOptions{})
    if err != nil {
        panic(err)
    }

    for _, image := range images {
        fmt.Println(image.ID)
    }
}

Dọọ

Ọmụmaatụ a dabara na ịgba ọsọ iwu docker pull

package main

import (
    "context"
    "io"
    "os"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // docker pull alpine
    out, err := cli.ImagePull(ctx, "docker.io/library/alpine", types.ImagePullOptions{})
    if err != nil {
        panic(err)
    }
    defer out.Close()
    io.Copy(os.Stdout, out)
}

Iji njirimara onye ọrụ na-ebudata onyonyo

Ọmụmaatụ a dabara na ịgba ọsọ iwu docker pull, na nyocha.

A na-eziga data nyocha na ederede doro anya. Ndebanye aha docker na-eji HTTPS,
A ga-ahazikwa ndekọ aha nkeonwe iji bufee data site na iji HTTPS.

package main

import (
    "context"
    "encoding/base64"
    "encoding/json"
    "io"
    "os"

    "github.com/docker/docker/api/types"
    "github.com/docker/docker/client"
)

func main() {
    ctx := context.Background()
    cli, err := client.NewEnvClient()
    if err != nil {
        panic(err)
    }

    // Создание конфига с данными для аутентификации
    authConfig := types.AuthConfig{
        Username: "username",
        Password: "password",
    }
    encodedJSON, err := json.Marshal(authConfig)
    if err != nil {
        panic(err)
    }
    authStr := base64.URLEncoding.EncodeToString(encodedJSON)

    out, err := cli.ImagePull(ctx, "docker.io/library/alpine", types.ImagePullOptions{RegistryAuth: authStr})
    if err != nil {
        panic(err)
    }

    defer out.Close()
    io.Copy(os.Stdout, out)
}

isi: www.habr.com