forked from Azure/draft-classic
/
up.go
186 lines (161 loc) · 4.68 KB
/
up.go
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package main
import (
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"time"
"github.com/BurntSushi/toml"
log "github.com/Sirupsen/logrus"
"github.com/ghodss/yaml"
"github.com/rjeczalik/notify"
"github.com/spf13/cobra"
"github.com/Azure/draft/pkg/draft"
"github.com/Azure/draft/pkg/draft/manifest"
"github.com/Azure/draft/pkg/draft/pack"
)
const upDesc = `
This command archives the current directory into a tar archive and uploads it to
the draft server.
Adding the "watch" option to draft.toml makes draft automatically archive and
upload whenever local files are saved. Draft delays a couple seconds to ensure
that changes have stopped before uploading, but that can be altered by the
"watch_delay" option.
`
const (
environmentEnvVar = "DRAFT_ENV"
)
type upCmd struct {
Client *draft.Client
Out io.Writer
Manifest *manifest.Manifest
}
func newUpCmd(out io.Writer) *cobra.Command {
var (
up = &upCmd{
Out: out,
Manifest: manifest.New(),
}
runningEnvironment string
)
cmd := &cobra.Command{
Use: "up",
Short: "upload the current directory to the draft server for deployment",
Long: upDesc,
PreRunE: setupConnection,
RunE: func(cmd *cobra.Command, args []string) error {
up.Client = ensureDraftClient(up.Client)
up.Manifest = manifest.New()
draftToml, err := ioutil.ReadFile("draft.toml")
if err != nil {
if !os.IsNotExist(err) {
return err
}
} else {
if err = toml.Unmarshal(draftToml, up.Manifest); err != nil {
return fmt.Errorf("could not unmarshal draft.toml: %v", err)
}
}
return up.run(runningEnvironment)
},
}
f := cmd.Flags()
f.StringVarP(&runningEnvironment, "environment", "e", defaultDraftEnvironment(), "the environment (development, staging, qa, etc) that draft will run under")
return cmd
}
func vals(e *manifest.Environment, cwd string) ([]byte, error) {
base := map[string]interface{}{}
// load $PWD/chart/values.yaml as the base config
valuesPath := filepath.Join(cwd, pack.ChartDir, pack.ValuesfileName)
bytes, err := ioutil.ReadFile(valuesPath)
if err != nil {
return []byte{}, err
}
if err := yaml.Unmarshal(bytes, &base); err != nil {
return []byte{}, fmt.Errorf("failed to parse %s: %s", valuesPath, err)
}
return yaml.Marshal(base)
}
func (u *upCmd) run(environment string) (err error) {
env := u.Manifest.Environments[environment]
cwd, e := os.Getwd()
if e != nil {
return e
}
u.Client.OptionWait = env.Wait
rawVals, err := vals(env, cwd)
if err != nil {
return err
}
if err = u.doUp(environment, cwd, rawVals); err != nil {
return err
}
// if `--watch=false`, return now
if !env.Watch {
return nil
}
fmt.Fprintln(u.Out, "Watching local files for changes...")
notifyPath := filepath.Join(cwd, "...")
log.Debugf("NOTIFY PATH: %s", notifyPath)
// make a buffered channel of filesystem notification events
ch := make(chan notify.EventInfo, 1)
// watch the current directory and everything under it, sending events to the channel
if err := notify.Watch(notifyPath, ch, notify.All); err != nil {
log.Fatalf("could not watch local filesystem for changes: %v", err)
}
defer notify.Stop(ch)
// create a timer to enforce a "quiet period" before deploying the app
timer := time.NewTimer(time.Hour)
timer.Stop()
delay := time.Duration(env.WatchDelay) * time.Second
for {
select {
case evt := <-ch:
log.Debugf("Event %s", evt)
// Only rebuild if the changed file is a file we care about
// ie, not a *.swp,*.tmp,*.temp file or a .git* file
if !strings.HasSuffix(evt.Path(), ".swp") &&
!strings.HasSuffix(evt.Path(), ".tmp") &&
!strings.HasSuffix(evt.Path(), ".temp") &&
!strings.HasPrefix(evt.Path(), fmt.Sprintf("%s/.git", cwd)) {
// reset the timer when files have changed
timer.Reset(delay)
}
case <-timer.C:
if err = u.doUp(environment, cwd, rawVals); err != nil {
return err
}
fmt.Fprintln(u.Out, "Watching local files for changes...")
}
}
}
func (u *upCmd) doUp(environment string, cwd string, vals []byte) (err error) {
env := u.Manifest.Environments[environment]
if env.BuildTarPath != "" && env.ChartTarPath != "" {
buildTar, e := os.Open(env.BuildTarPath)
if e != nil {
return e
}
chartTar, e := os.Open(env.ChartTarPath)
if e != nil {
return e
}
err = u.Client.Up(env.Name, env.Namespace, u.Out, buildTar, chartTar, vals)
} else {
err = u.Client.UpFromDir(env.Name, env.Namespace, u.Out, cwd, vals)
}
// format error before returning
if err != nil {
err = fmt.Errorf("there was an error running 'draft up': %v", err)
}
return
}
func defaultDraftEnvironment() string {
env := os.Getenv(environmentEnvVar)
if env == "" {
env = manifest.DefaultEnvironmentName
}
return env
}