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task.go
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task.go
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package runner
import (
"context"
"encoding/json"
"io"
"os"
"os/user"
"path/filepath"
"time"
"github.com/docker/docker/cliconfig/configfile"
docker "github.com/fsouza/go-dockerclient"
"github.com/pedronasser/functions/api/runner/task"
"github.com/pedronasser/runner/drivers"
)
var registries dockerRegistries
func init() {
// Attempt to fetch it from an environment variable
regsettings := os.Getenv("DOCKER_AUTH")
if regsettings == "" {
u, err := user.Current()
if err == nil {
var config configfile.ConfigFile
cfile, err := os.Open(filepath.Join(u.HomeDir, ".docker", "config.json"))
if err != nil {
return
}
err = config.LoadFromReader(cfile)
if err != nil {
return
}
var regs []dockerRegistry
for _, auth := range config.AuthConfigs {
regs = append(regs, dockerRegistry{
Username: auth.Username,
Password: auth.Password,
Name: auth.ServerAddress,
})
}
registries = dockerRegistries(regs)
}
} else {
// If we have settings, unmarshal them
json.Unmarshal([]byte(regsettings), ®istries)
}
}
type containerTask struct {
ctx context.Context
cfg *task.Config
canRun chan bool
}
func (t *containerTask) Command() string { return "" }
func (t *containerTask) EnvVars() map[string]string {
return t.cfg.Env
}
func (t *containerTask) Input() io.Reader {
return t.cfg.Stdin
}
func (t *containerTask) Labels() map[string]string {
return map[string]string{
"LogName": t.cfg.AppName,
}
}
func (t *containerTask) Id() string { return t.cfg.ID }
func (t *containerTask) Route() string { return "" }
func (t *containerTask) Image() string { return t.cfg.Image }
func (t *containerTask) Timeout() time.Duration { return t.cfg.Timeout }
func (t *containerTask) IdleTimeout() time.Duration { return t.cfg.IdleTimeout }
func (t *containerTask) Logger() (io.Writer, io.Writer) { return t.cfg.Stdout, t.cfg.Stderr }
func (t *containerTask) Volumes() [][2]string { return [][2]string{} }
func (t *containerTask) WorkDir() string { return "" }
func (t *containerTask) Close() {}
func (t *containerTask) WriteStat(drivers.Stat) {}
// Implementing the docker.AuthConfiguration interface. Pulling in
// the docker repo password from environment variables
func (t *containerTask) DockerAuth() (docker.AuthConfiguration, error) {
reg, _, _ := drivers.ParseImage(t.Image())
authconfig := docker.AuthConfiguration{}
if customAuth := registries.Find(reg); customAuth != nil {
authconfig = docker.AuthConfiguration{
Password: customAuth.Password,
ServerAddress: customAuth.Name,
Username: customAuth.Username,
}
}
return authconfig, nil
}