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docker.go
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docker.go
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package docker
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io/fs"
"log"
"os"
"os/exec"
"path"
"strings"
"github.com/coryo12345/easy-deploy/internal/config"
)
const (
WORKDIR_SUB_NAME = "easydeploy"
)
type DockerRepository interface {
Health() (bool, error)
GetStatuses(configEntries []config.ConfigEntry) ([]ConfigStatus, error)
GetStatus(configEntry config.ConfigEntry) (ConfigStatus, error)
CloneRepo(config config.ConfigEntry, out *strings.Builder) error
BuildImage(config config.ConfigEntry, out *strings.Builder) error
StopContainer(config config.ConfigEntry, out *strings.Builder) error
DeleteContainer(config config.ConfigEntry, out *strings.Builder) error
StartContainer(config config.ConfigEntry, out *strings.Builder) error
CleanWorkDir(config config.ConfigEntry) error
}
type dockerRepo struct {
workDir string
}
func New(workDir string) DockerRepository {
return &dockerRepo{
workDir: workDir,
}
}
type ConfigStatus struct {
Config config.ConfigEntry
Status DockerStatus
Error error
}
type DockerStatus struct {
Command string
CreatedAt string
ID string
Image string
Labels string
LocalVolumes string
Mounts string
Names string
Networks string
Ports string
RunningFor string
Size string
State string
Status string
}
func (d dockerRepo) Health() (bool, error) {
cmd := exec.Command("docker", "ps")
var out bytes.Buffer
var err bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &err
cmd.Run()
if out.String() != "" && err.String() == "" {
return true, nil
} else {
return false, errors.New(err.String())
}
}
func (d dockerRepo) GetStatuses(configEntries []config.ConfigEntry) ([]ConfigStatus, error) {
statuses := make([]ConfigStatus, len(configEntries))
for i, entry := range configEntries {
status, err := d.GetStatus(entry)
if err != nil {
statuses[i] = ConfigStatus{
Config: entry,
Status: DockerStatus{},
Error: err,
}
} else {
statuses[i] = status
}
}
return statuses, nil
}
func (d dockerRepo) GetStatus(configEntry config.ConfigEntry) (ConfigStatus, error) {
cmd := exec.Command("docker", "ps", "-a", "--format={{json .}}", "-f", fmt.Sprintf("name=%s", configEntry.ContainerName))
out, err := cmd.Output()
if err != nil {
return ConfigStatus{}, err
}
status := DockerStatus{}
err = json.Unmarshal(out, &status)
if err != nil {
return ConfigStatus{}, err
}
cs := ConfigStatus{
Config: configEntry,
Status: status,
Error: nil,
}
return cs, nil
}
func (d dockerRepo) CloneRepo(config config.ConfigEntry, logs *strings.Builder) error {
workDirPath := path.Join(d.workDir, WORKDIR_SUB_NAME, config.Id)
err := os.MkdirAll(workDirPath, fs.ModePerm)
if err != nil {
return err
}
cmd := exec.Command("git", "clone", config.GitRepository, workDirPath)
var out bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &out
err = cmd.Run()
logs.WriteString(out.String())
if err != nil {
return err
}
return nil
}
func (d dockerRepo) BuildImage(config config.ConfigEntry, logs *strings.Builder) error {
workDirPath := path.Join(d.workDir, WORKDIR_SUB_NAME, config.Id)
dockerfilePath := path.Join(workDirPath, config.Dockerfile)
cmd := exec.Command("docker", "build", "-t", config.ImageName, "-f", dockerfilePath, workDirPath)
var out bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &out
err := cmd.Run()
logs.WriteString(out.String())
if err != nil {
return err
}
return nil
}
func (d dockerRepo) StopContainer(config config.ConfigEntry, logs *strings.Builder) error {
cmd := exec.Command("docker", "stop", config.ContainerName)
var out bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &out
err := cmd.Run()
logs.WriteString(out.String())
if err != nil {
// going to ignore this for now - if the container doesn't exist it will error
log.Println(err.Error())
}
return nil
}
func (d dockerRepo) DeleteContainer(config config.ConfigEntry, logs *strings.Builder) error {
cmd := exec.Command("docker", "rm", config.ContainerName)
var out bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &out
err := cmd.Run()
logs.WriteString(out.String())
if err != nil {
// if the previous container didnt exist this would error
log.Println(err.Error())
}
return nil
}
func (d dockerRepo) StartContainer(config config.ConfigEntry, logs *strings.Builder) error {
envStr := strings.Builder{}
for key, value := range config.Env {
envStr.WriteString(fmt.Sprintf(" --env %s=%s", key, value))
}
cmd := exec.Command("sh", "-c", fmt.Sprintf("docker run %s --name %s %s --detach %s", envStr.String(), config.ContainerName, config.ContainerOptions, config.ImageName))
var out bytes.Buffer
cmd.Stdout = &out
cmd.Stderr = &out
err := cmd.Run()
logs.WriteString(out.String())
if err != nil {
return err
}
return nil
}
func (d dockerRepo) CleanWorkDir(config config.ConfigEntry) error {
workDirPath := path.Join(d.workDir, WORKDIR_SUB_NAME, config.Id)
err := os.RemoveAll(workDirPath)
if err != nil {
log.Printf("ERROR CLEANING WORKDIR FOR %s\n", config.Id)
log.Println(err.Error())
}
return nil
}