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Merge pull request #335 from binwiederhier/done

WIP: ntfy publish --pid $PID ...
This commit is contained in:
Philipp C. Heckel 2022-06-21 13:20:34 -04:00 committed by GitHub
commit 4e29216b5f
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10 changed files with 333 additions and 89 deletions

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@ -5,11 +5,14 @@ import (
"fmt"
"github.com/urfave/cli/v2"
"heckel.io/ntfy/client"
"heckel.io/ntfy/log"
"heckel.io/ntfy/util"
"io"
"os"
"os/exec"
"path/filepath"
"strings"
"time"
)
func init() {
@ -20,6 +23,7 @@ var flagsPublish = append(
flagsDefault,
&cli.StringFlag{Name: "config", Aliases: []string{"c"}, EnvVars: []string{"NTFY_CONFIG"}, Usage: "client config file"},
&cli.StringFlag{Name: "title", Aliases: []string{"t"}, EnvVars: []string{"NTFY_TITLE"}, Usage: "message title"},
&cli.StringFlag{Name: "message", Aliases: []string{"m"}, EnvVars: []string{"NTFY_MESSAGE"}, Usage: "message body"},
&cli.StringFlag{Name: "priority", Aliases: []string{"p"}, EnvVars: []string{"NTFY_PRIORITY"}, Usage: "priority of the message (1=min, 2=low, 3=default, 4=high, 5=max)"},
&cli.StringFlag{Name: "tags", Aliases: []string{"tag", "T"}, EnvVars: []string{"NTFY_TAGS"}, Usage: "comma separated list of tags and emojis"},
&cli.StringFlag{Name: "delay", Aliases: []string{"at", "in", "D"}, EnvVars: []string{"NTFY_DELAY"}, Usage: "delay/schedule message"},
@ -30,6 +34,8 @@ var flagsPublish = append(
&cli.StringFlag{Name: "file", Aliases: []string{"f"}, EnvVars: []string{"NTFY_FILE"}, Usage: "file to upload as an attachment"},
&cli.StringFlag{Name: "email", Aliases: []string{"mail", "e"}, EnvVars: []string{"NTFY_EMAIL"}, Usage: "also send to e-mail address"},
&cli.StringFlag{Name: "user", Aliases: []string{"u"}, EnvVars: []string{"NTFY_USER"}, Usage: "username[:password] used to auth against the server"},
&cli.IntFlag{Name: "wait-pid", Aliases: []string{"pid"}, EnvVars: []string{"NTFY_WAIT_PID"}, Usage: "wait until PID exits before publishing"},
&cli.BoolFlag{Name: "wait-cmd", Aliases: []string{"cmd", "done"}, EnvVars: []string{"NTFY_WAIT_CMD"}, Usage: "run command and wait until it finishes before publishing"},
&cli.BoolFlag{Name: "no-cache", Aliases: []string{"C"}, EnvVars: []string{"NTFY_NO_CACHE"}, Usage: "do not cache message server-side"},
&cli.BoolFlag{Name: "no-firebase", Aliases: []string{"F"}, EnvVars: []string{"NTFY_NO_FIREBASE"}, Usage: "do not forward message to Firebase"},
&cli.BoolFlag{Name: "env-topic", Aliases: []string{"P"}, EnvVars: []string{"NTFY_ENV_TOPIC"}, Usage: "use topic from NTFY_TOPIC env variable"},
@ -37,14 +43,16 @@ var flagsPublish = append(
)
var cmdPublish = &cli.Command{
Name: "publish",
Aliases: []string{"pub", "send", "trigger"},
Usage: "Send message via a ntfy server",
UsageText: "ntfy publish [OPTIONS..] TOPIC [MESSAGE]\nNTFY_TOPIC=.. ntfy publish [OPTIONS..] -P [MESSAGE]",
Action: execPublish,
Category: categoryClient,
Flags: flagsPublish,
Before: initLogFunc,
Name: "publish",
Aliases: []string{"pub", "send", "trigger"},
Usage: "Send message via a ntfy server",
UsageText: `ntfy publish [OPTIONS..] TOPIC [MESSAGE...]
ntfy publish [OPTIONS..] --wait-cmd COMMAND...
NTFY_TOPIC=.. ntfy publish [OPTIONS..] -P [MESSAGE...]`,
Action: execPublish,
Category: categoryClient,
Flags: flagsPublish,
Before: initLogFunc,
Description: `Publish a message to a ntfy server.
Examples:
@ -59,8 +67,10 @@ Examples:
ntfy pub --attach="http://some.tld/file.zip" files # Send ZIP archive from URL as attachment
ntfy pub --file=flower.jpg flowers 'Nice!' # Send image.jpg as attachment
ntfy pub -u phil:mypass secret Psst # Publish with username/password
ntfy pub --wait-pid 1234 mytopic # Wait for process 1234 to exit before publishing
ntfy pub --wait-cmd mytopic rsync -av ./ /tmp/a # Run command and publish after it completes
NTFY_USER=phil:mypass ntfy pub secret Psst # Use env variables to set username/password
NTFY_TOPIC=mytopic ntfy pub -P "some message"" # Use NTFY_TOPIC variable as topic
NTFY_TOPIC=mytopic ntfy pub -P "some message" # Use NTFY_TOPIC variable as topic
cat flower.jpg | ntfy pub --file=- flowers 'Nice!' # Same as above, send image.jpg as attachment
ntfy trigger mywebhook # Sending without message, useful for webhooks
@ -88,22 +98,11 @@ func execPublish(c *cli.Context) error {
user := c.String("user")
noCache := c.Bool("no-cache")
noFirebase := c.Bool("no-firebase")
envTopic := c.Bool("env-topic")
quiet := c.Bool("quiet")
var topic, message string
if envTopic {
topic = os.Getenv("NTFY_TOPIC")
if c.NArg() > 0 {
message = strings.Join(c.Args().Slice(), " ")
}
} else {
if c.NArg() < 1 {
return errors.New("must specify topic, type 'ntfy publish --help' for help")
}
topic = c.Args().Get(0)
if c.NArg() > 1 {
message = strings.Join(c.Args().Slice()[1:], " ")
}
pid := c.Int("wait-pid")
topic, message, command, err := parseTopicMessageCommand(c)
if err != nil {
return err
}
var options []client.PublishOption
if title != "" {
@ -156,6 +155,21 @@ func execPublish(c *cli.Context) error {
}
options = append(options, client.WithBasicAuth(user, pass))
}
if pid > 0 {
newMessage, err := waitForProcess(pid)
if err != nil {
return err
} else if message == "" {
message = newMessage
}
} else if len(command) > 0 {
newMessage, err := runAndWaitForCommand(command)
if err != nil {
return err
} else if message == "" {
message = newMessage
}
}
var body io.Reader
if file == "" {
body = strings.NewReader(message)
@ -188,3 +202,91 @@ func execPublish(c *cli.Context) error {
}
return nil
}
// parseTopicMessageCommand reads the topic and the remaining arguments from the context.
// There are a few cases to consider:
// ntfy publish <topic> [<message>]
// ntfy publish --wait-cmd <topic> <command>
// NTFY_TOPIC=.. ntfy publish [<message>]
// NTFY_TOPIC=.. ntfy publish --wait-cmd <command>
func parseTopicMessageCommand(c *cli.Context) (topic string, message string, command []string, err error) {
var args []string
topic, args, err = parseTopicAndArgs(c)
if err != nil {
return
}
if c.Bool("wait-cmd") {
if len(args) == 0 {
err = errors.New("must specify command when --wait-cmd is passed, type 'ntfy publish --help' for help")
return
}
command = args
} else {
message = strings.Join(args, " ")
}
if c.String("message") != "" {
message = c.String("message")
}
return
}
func parseTopicAndArgs(c *cli.Context) (topic string, args []string, err error) {
envTopic := c.Bool("env-topic")
if envTopic {
fmt.Fprintln(c.App.ErrWriter, "\x1b[1;33mDeprecation notice: The --env-topic/-P flag will be removed in July 2022, see https://ntfy.sh/docs/deprecations/ for details.\x1b[0m")
topic = os.Getenv("NTFY_TOPIC")
if topic == "" {
return "", nil, errors.New("when --env-topic is passed, must define NTFY_TOPIC environment variable")
}
return topic, remainingArgs(c, 0), nil
}
if c.NArg() < 1 {
return "", nil, errors.New("must specify topic, type 'ntfy publish --help' for help")
}
return c.Args().Get(0), remainingArgs(c, 1), nil
}
func remainingArgs(c *cli.Context, fromIndex int) []string {
if c.NArg() > fromIndex {
return c.Args().Slice()[fromIndex:]
}
return []string{}
}
func waitForProcess(pid int) (message string, err error) {
if !processExists(pid) {
return "", fmt.Errorf("process with PID %d not running", pid)
}
start := time.Now()
log.Debug("Waiting for process with PID %d to exit", pid)
for processExists(pid) {
time.Sleep(500 * time.Millisecond)
}
runtime := time.Since(start).Round(time.Millisecond)
log.Debug("Process with PID %d exited after %s", pid, runtime)
return fmt.Sprintf("Process with PID %d exited after %s", pid, runtime), nil
}
func runAndWaitForCommand(command []string) (message string, err error) {
prettyCmd := util.QuoteCommand(command)
log.Debug("Running command: %s", prettyCmd)
start := time.Now()
cmd := exec.Command(command[0], command[1:]...)
if log.IsTrace() {
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
}
err = cmd.Run()
runtime := time.Since(start).Round(time.Millisecond)
if err != nil {
if exitError, ok := err.(*exec.ExitError); ok {
log.Debug("Command failed after %s (exit code %d): %s", runtime, exitError.ExitCode(), prettyCmd)
return fmt.Sprintf("Command failed after %s (exit code %d): %s", runtime, exitError.ExitCode(), prettyCmd), nil
}
// Hard fail when command does not exist or could not be properly launched
return "", fmt.Errorf("command failed: %s, error: %s", prettyCmd, err.Error())
}
log.Debug("Command succeeded after %s: %s", runtime, prettyCmd)
return fmt.Sprintf("Command succeeded after %s: %s", runtime, prettyCmd), nil
}

8
cmd/publish_darwin.go Normal file
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@ -0,0 +1,8 @@
package cmd
import "syscall"
func processExists(pid int) bool {
err := syscall.Kill(pid, syscall.Signal(0))
return err == nil
}

8
cmd/publish_linux.go Normal file
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@ -0,0 +1,8 @@
package cmd
import "syscall"
func processExists(pid int) bool {
err := syscall.Kill(pid, syscall.Signal(0))
return err == nil
}

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@ -5,7 +5,11 @@ import (
"github.com/stretchr/testify/require"
"heckel.io/ntfy/test"
"heckel.io/ntfy/util"
"os"
"os/exec"
"strconv"
"testing"
"time"
)
func TestCLI_Publish_Subscribe_Poll_Real_Server(t *testing.T) {
@ -70,3 +74,66 @@ func TestCLI_Publish_All_The_Things(t *testing.T) {
require.Equal(t, int64(0), m.Attachment.Expires)
require.Equal(t, "", m.Attachment.Type)
}
func TestCLI_Publish_Wait_PID_And_Cmd(t *testing.T) {
s, port := test.StartServer(t)
defer test.StopServer(t, s, port)
topic := fmt.Sprintf("http://127.0.0.1:%d/mytopic", port)
// Test: sleep 0.5
sleep := exec.Command("sleep", "0.5")
require.Nil(t, sleep.Start())
go sleep.Wait() // Must be called to release resources
start := time.Now()
app, _, stdout, _ := newTestApp()
require.Nil(t, app.Run([]string{"ntfy", "publish", "--wait-pid", strconv.Itoa(sleep.Process.Pid), topic}))
m := toMessage(t, stdout.String())
require.True(t, time.Since(start) >= 500*time.Millisecond)
require.Regexp(t, `Process with PID \d+ exited after `, m.Message)
// Test: PID does not exist
app, _, _, _ = newTestApp()
err := app.Run([]string{"ntfy", "publish", "--wait-pid", "1234567", topic})
require.Error(t, err)
require.Equal(t, "process with PID 1234567 not running", err.Error())
// Test: Successful command (exit 0)
start = time.Now()
app, _, stdout, _ = newTestApp()
require.Nil(t, app.Run([]string{"ntfy", "publish", "--wait-cmd", topic, "sleep", "0.5"}))
m = toMessage(t, stdout.String())
require.True(t, time.Since(start) >= 500*time.Millisecond)
require.Contains(t, m.Message, `Command succeeded after `)
require.Contains(t, m.Message, `: sleep 0.5`)
// Test: Failing command (exit 1)
app, _, stdout, _ = newTestApp()
require.Nil(t, app.Run([]string{"ntfy", "publish", "--wait-cmd", topic, "/bin/false", "false doesn't care about its args"}))
m = toMessage(t, stdout.String())
require.Contains(t, m.Message, `Command failed after `)
require.Contains(t, m.Message, `(exit code 1): /bin/false "false doesn't care about its args"`, m.Message)
// Test: Non-existing command (hard fail!)
app, _, _, _ = newTestApp()
err = app.Run([]string{"ntfy", "publish", "--wait-cmd", topic, "does-not-exist-no-really", "really though"})
require.Error(t, err)
require.Equal(t, `command failed: does-not-exist-no-really "really though", error: exec: "does-not-exist-no-really": executable file not found in $PATH`, err.Error())
// Tests with NTFY_TOPIC set ////
require.Nil(t, os.Setenv("NTFY_TOPIC", topic))
// Test: Successful command with NTFY_TOPIC
app, _, stdout, _ = newTestApp()
require.Nil(t, app.Run([]string{"ntfy", "publish", "--env-topic", "--cmd", "echo", "hi there"}))
m = toMessage(t, stdout.String())
require.Equal(t, "mytopic", m.Topic)
// Test: Successful --wait-pid with NTFY_TOPIC
sleep = exec.Command("sleep", "0.2")
require.Nil(t, sleep.Start())
go sleep.Wait() // Must be called to release resources
app, _, stdout, _ = newTestApp()
require.Nil(t, app.Run([]string{"ntfy", "publish", "--env-topic", "--wait-pid", strconv.Itoa(sleep.Process.Pid)}))
m = toMessage(t, stdout.String())
require.Regexp(t, `Process with PID \d+ exited after .+ms`, m.Message)
}

10
cmd/publish_windows.go Normal file
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@ -0,0 +1,10 @@
package cmd
import (
"os"
)
func processExists(pid int) bool {
_, err := os.FindProcess(pid)
return err == nil
}

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@ -1,21 +1,35 @@
# Deprecation notices
This page is used to list deprecation notices for ntfy. Deprecated commands and options will be
**removed after ~3 months** from the time they were deprecated.
**removed after 1-3 months** from the time they were deprecated. How long the feature is deprecated
before the behavior is changed depends on the severity of the change, and how prominent the feature is.
## Active deprecations
### Android app: WebSockets will become the default connection protocol
> Active since 2022-03-13, behavior will change in **June 2022**
### ntfy CLI: `ntfy publish --env-topic` will be removed
> Active since 2022-06-20, behavior will change end of **July 2022**
In future versions of the Android app, instant delivery connections and connections to self-hosted servers will
be using the WebSockets protocol. This potentially requires [configuration changes in your proxy](https://ntfy.sh/docs/config/#nginxapache2caddy).
The `ntfy publish --env-topic` option will be removed. It'll still be possible to specify a topic via the
`NTFY_TOPIC` environment variable, but it won't be necessary anymore to specify the `--env-topic` flag.
Due to [reports of varying battery consumption](https://github.com/binwiederhier/ntfy/issues/190) (which entirely
seems to depend on the phone), JSON HTTP stream support will not be removed. Instead, I'll just flip the default to
WebSocket in June.
=== "Before"
```
$ NTFY_TOPIC=mytopic ntfy publish --env-topic "this is the message"
```
=== "After"
```
$ NTFY_TOPIC=mytopic ntfy publish "this is the message"
```
## Previous deprecations
### <del>Android app: WebSockets will become the default connection protocol</del>
> Active since 2022-03-13, behavior will not change (deprecation removed 2022-06-20)
Instant delivery connections and connections to self-hosted servers in the Android app were going to switch
to use the WebSockets protocol by default. It was decided to keep JSON stream as the most compatible default
and add a notice banner in the Android app instead.
### Android app: Using `since=<timestamp>` instead of `since=<id>`
> Active since 2022-02-27, behavior changed with v1.14.0

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@ -8,6 +8,7 @@ and the [ntfy Android app](https://github.com/binwiederhier/ntfy-android/release
**Features:**
* ntfy CLI can now [wait for a command or PID](https://ntfy.sh/docs/subscribe/cli/#wait-for-pidcommand) before publishing ([#263](https://github.com/binwiederhier/ntfy/issues/263), thanks to the [original ntfy](https://github.com/dschep/ntfy) for the idea)
* Trace: Log entire HTTP request to simplify debugging (no ticket)
* Allow setting user password via `NTFY_PASSWORD` env variable ([#327](https://github.com/binwiederhier/ntfy/pull/327), thanks to [@Kenix3](https://github.com/Kenix3))

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@ -56,6 +56,71 @@ quick ones:
ntfy pub mywebhook
```
### Attaching a local file
You can easily upload and attach a local file to a notification:
```
$ ntfy pub --file README.md mytopic | jq .
{
"id": "meIlClVLABJQ",
"time": 1655825460,
"event": "message",
"topic": "mytopic",
"message": "You received a file: README.md",
"attachment": {
"name": "README.md",
"type": "text/plain; charset=utf-8",
"size": 2892,
"expires": 1655836260,
"url": "https://ntfy.sh/file/meIlClVLABJQ.txt"
}
}
```
### Wait for PID/command
If you have a long-running command, you may wrap it directly with `ntfy publish --wait-cmd`,
or if you forgot to wrap it and it's already running, wait for the process to complete with
`ntfy publish --wait-pid`.
Run a command and wait for it to complete (here: `rsync ...`):
```
$ ntfy pub --wait-cmd mytopic rsync -av ./ root@example.com:/backups/ | jq .
{
"id": "Re0rWXZQM8WB",
"time": 1655825624,
"event": "message",
"topic": "mytopic",
"message": "Command succeeded after 56.553s: rsync -av ./ root@example.com:/backups/"
}
```
Or, if you already started the long-running process and want to wait for it, you can do this:
=== "Using a PID directly"
```
$ ntfy pub --wait-pid 8458 mytopic | jq .
{
"id": "orM6hJKNYkWb",
"time": 1655825827,
"event": "message",
"topic": "mytopic",
"message": "Process with PID 8458 exited after 2.003s"
}
```
=== "Using a `pidof`"
```
$ ntfy pub --wait-pid $(pidof rsync) mytopic | jq .
{
"id": "orM6hJKNYkWb",
"time": 1655825827,
"event": "message",
"topic": "mytopic",
"message": "Process with PID 8458 exited after 2.003s"
}
```
## Subscribe to topics
You can subscribe to topics using `ntfy subscribe`. Depending on how it is called, this command
will either print or execute a command for every arriving message. There are a few different ways

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@ -26,6 +26,7 @@ var (
randomMutex = sync.Mutex{}
sizeStrRegex = regexp.MustCompile(`(?i)^(\d+)([gmkb])?$`)
errInvalidPriority = errors.New("invalid priority")
noQuotesRegex = regexp.MustCompile(`^[-_./:@a-zA-Z0-9]+$`)
)
// FileExists checks if a file exists, and returns true if it does
@ -120,38 +121,6 @@ func ValidRandomString(s string, length int) bool {
return true
}
// DurationToHuman converts a duration to a human-readable format
func DurationToHuman(d time.Duration) (str string) {
if d == 0 {
return "0"
}
d = d.Round(time.Second)
days := d / time.Hour / 24
if days > 0 {
str += fmt.Sprintf("%dd", days)
}
d -= days * time.Hour * 24
hours := d / time.Hour
if hours > 0 {
str += fmt.Sprintf("%dh", hours)
}
d -= hours * time.Hour
minutes := d / time.Minute
if minutes > 0 {
str += fmt.Sprintf("%dm", minutes)
}
d -= minutes * time.Minute
seconds := d / time.Second
if seconds > 0 {
str += fmt.Sprintf("%ds", seconds)
}
return
}
// ParsePriority parses a priority string into its equivalent integer value
func ParsePriority(priority string) (int, error) {
switch strings.TrimSpace(strings.ToLower(priority)) {
@ -286,3 +255,22 @@ func MaybeMarshalJSON(v interface{}) string {
}
return string(jsonBytes)
}
// QuoteCommand combines a command array to a string, quoting arguments that need quoting.
// This function is naive, and sometimes wrong. It is only meant for lo pretty-printing a command.
//
// Warning: Never use this function with the intent to run the resulting command.
//
// Example:
// []string{"ls", "-al", "Document Folder"} -> ls -al "Document Folder"
func QuoteCommand(command []string) string {
var quoted []string
for _, c := range command {
if noQuotesRegex.MatchString(c) {
quoted = append(quoted, c)
} else {
quoted = append(quoted, fmt.Sprintf(`"%s"`, c))
}
}
return strings.Join(quoted, " ")
}

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@ -5,33 +5,8 @@ import (
"io/ioutil"
"path/filepath"
"testing"
"time"
)
func TestDurationToHuman_SevenDays(t *testing.T) {
d := 7 * 24 * time.Hour
require.Equal(t, "7d", DurationToHuman(d))
}
func TestDurationToHuman_MoreThanOneDay(t *testing.T) {
d := 49 * time.Hour
require.Equal(t, "2d1h", DurationToHuman(d))
}
func TestDurationToHuman_LessThanOneDay(t *testing.T) {
d := 17*time.Hour + 15*time.Minute
require.Equal(t, "17h15m", DurationToHuman(d))
}
func TestDurationToHuman_TenOfThings(t *testing.T) {
d := 10*time.Hour + 10*time.Minute + 10*time.Second
require.Equal(t, "10h10m10s", DurationToHuman(d))
}
func TestDurationToHuman_Zero(t *testing.T) {
require.Equal(t, "0", DurationToHuman(0))
}
func TestRandomString(t *testing.T) {
s1 := RandomString(10)
s2 := RandomString(10)
@ -162,3 +137,9 @@ func TestLastString(t *testing.T) {
require.Equal(t, "last", LastString([]string{"first", "second", "last"}, "default"))
require.Equal(t, "default", LastString([]string{}, "default"))
}
func TestQuoteCommand(t *testing.T) {
require.Equal(t, `ls -al "Document Folder"`, QuoteCommand([]string{"ls", "-al", "Document Folder"}))
require.Equal(t, `rsync -av /home/phil/ root@example.com:/home/phil/`, QuoteCommand([]string{"rsync", "-av", "/home/phil/", "root@example.com:/home/phil/"}))
require.Equal(t, `/home/sweet/home "Äöü this is a test" "\a\b"`, QuoteCommand([]string{"/home/sweet/home", "Äöü this is a test", "\\a\\b"}))
}