Crontab installation support
parent
e1fa2f35f2
commit
3e8b817796
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@ -1 +1,5 @@
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bin/
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dist/
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sonar.pi/
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media/
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crontab.in/
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20
Makefile
20
Makefile
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@ -18,6 +18,26 @@ build:
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gofmt -w .
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go build $(LDFLAGS) -i -o bin/sonar cmd/sonar/main.go
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# `make dist` makes a distribution bundle.
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.PHONY: dist
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dist:
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rm -rf dist
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mkdir dist
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cp -r crontab.in www dist/
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go build $(LDFLAGS) -i -o dist/sonar cmd/sonar/main.go
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cd dist
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tar -czvf sonar-$(VERSION).tar.gz *
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mv *.tar.gz ../
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# `make pi` makes a distribution for the Raspberry Pi.
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.PHONY: pi
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pi:
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rm -rf sonar.pi
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mkdir sonar.pi
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cp -r crontab.in www sonar.pi/
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GOOS=linux GOARCH=arm go build $(LDFLAGS) -i -o sonar.pi/sonar cmd/sonar/main.go
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zip -r sonar-pi.zip sonar.pi
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# `make run` to run it in debug mode.
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.PHONY: run
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run:
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169
README.md
169
README.md
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@ -1,3 +1,170 @@
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# sonar
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Raspberry Pi alarm clock server.
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Sonar is an alarm clock server designed to run on a Raspberry Pi, but it could
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just as well work anywhere.
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For the alarm clock it plays a list of media files from the filesystem. By
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default it will use the `mplayer` command.
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# Usage
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```
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./sonar [-listen 127.0.0.1:8000]
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```
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Sonar has no authentication system. It listens on localhost by default and you
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should put a proxy like nginx in front with HTTP Basic Auth or whatever.
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It will create its config on first startup.
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# Features
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It listens on an HTTP service and shows a GUI on the homepage where you can
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toggle the volume settings, start/stop the alarm clock playlist, and see/change
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the scheduled alarm times.
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The clock is controlled over simple RESTful API. You just post to these
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endpoints:
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* `/volume/higher`: increase volume by 5% (default)
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* `/volume/lower`: lower volume by 5%
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* `/volume/mute`: toggle mute status
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* `/playlist/start`: start the playlist (doesn't stop automatically!)
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* `/playlist/stop`: stop the playlist
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Example to start the playlist via `curl`:
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```bash
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$ curl -X POST http://localhost:8000/playlist/start
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```
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# Screenshots
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# How It Works
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The config file specifies the shell commands to run to launch your media player,
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volume changing commands, etc.
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When the playlist starts, the Go app shuffles the files in your media folder
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and feeds them one by one to your media player command (`mplayer` by default).
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To stop the playlist, it kills the current mplayer task and stops.
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When you save a schedule for the alarm clock, it will create and install a
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crontab entry for the user running the app. The cron entry hits the API server
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to start the playlist at the desired time, and then, an hour later, it stops
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it the same way.
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## Crontab
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The schedule system installs into the user's local crontab. The cron entries
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just post back to the API service, like:
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```cron
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30 5 * * * curl -X POST http://127.0.0.1:8000/playlist/start
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30 6 * * * curl -X POST http://127.0.0.1:8000/playlist/stop
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```
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The stop command is installed one hour after the start.
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The user's local crontab is **overwritten** by the one Sonar installs. To keep
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custom crontab entries, place them into the `crontab.in/` directory.
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All custom user crontabs are concatenated together ahead of Sonar's cron entries.
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The `000-header.cron` is the standard Debian cron header and tends to be installed
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on top.
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# Installation
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## Supervisor
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There's an example supervisor config in the `etc/` folder.
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Add it to supervisor and put nginx in front with Basic Auth.
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# Makefile
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* `make setup` to fetch dependencies.
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* `make build` to build the binary to `bin/`
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* `make dist` to build a distribution for your current setup
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* `make run` to run it in debug mode
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* `make watch` to run it in debug mode, auto-reloading (sometimes flaky control over mplayer tho!)
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* `make pi` to build a zipped distribution for Raspberry Pi.
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See [Cross Compile for Raspberry Pi](#cross-compile-for-raspberry-pi)
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# Configuration
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The config file will be in your system's native location, which is
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`~/.config/sonar.json` on Linux environments.
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After running the app once, it will save its default configuration to disk.
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The defaults are fine for PulseAudio setups but you may want to revise it to
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be sure.
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A default config file looks like this, annotated:
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```javascript
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{
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"cookieName": "session", // name of HTTP session cookie
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"mediaPath": "./media", // path of media files (like .mp3) to shuffle and play
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"mediaCommand": [
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// The command to actually play the media. Use %s where the filename goes.
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"mplayer",
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"%s"
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],
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"volUpCommand": [
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"pactl",
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"set-sink-volume",
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"0", // Sink number, from `pactl list-sinks`
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"+5%" // 5% step
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],
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"volDnCommand": [
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"pactl",
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"set-sink-volume",
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"0", // Sink number
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"-5%"
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],
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"volMuteCommand": [
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"pactl",
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"set-sink-mute",
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"0",
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"toggle"
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],
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"volStatusCommand": [
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// How to get the volume status. The command
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// should output just a value like: 56%
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"bash",
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"-c",
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"pacmd dump-volumes | grep \"Sink 0\" | egrep -o '([0-9]+)%' | head -1"
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],
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// scheduled alarm time by default
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"hour": 6,
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"minute": 30,
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"days": [
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"1", "2", "3", "4", "5"
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]
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}
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```
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## Cross Compile for Raspberry Pi
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Use the `make pi` command to build a distribution for Raspberry Pi.
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If you get permission errors when trying to download the standard library for
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ARM64, make and chown the folders as a workaround:
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```bash
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sudo mkdir /usr/lib/golang/pkg/linux_arm
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sudo chown kirsle:kirsle /usr/lib/golang/pkg/linux_arm
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make pi
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rsync -av sonar.pi 192.168.0.102:
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```
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It outputs a `sonar-pi.zip` that you can scp over and run.
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# License
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Noah Petherbridge © 2018
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GPLv2.
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@ -2,25 +2,38 @@ package main
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import (
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"flag"
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"fmt"
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"math/rand"
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"os"
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"time"
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"git.kirsle.net/apps/sonar"
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"github.com/kirsle/golog"
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)
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// Build hash.
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var Build = "N/A"
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var debug bool
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var listen string
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var version bool
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func init() {
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rand.Seed(time.Now().UnixNano())
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flag.StringVar(&listen, "listen", "127.0.0.1:8000", "Interface to listen on, default localhost only")
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flag.BoolVar(&debug, "debug", false, "Debug level logging")
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flag.BoolVar(&version, "version", false, "Version number")
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flag.BoolVar(&version, "v", false, "Version number (alias)")
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}
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func main() {
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flag.Parse()
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if version {
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fmt.Printf("sonar v%s build %s\n", sonar.Version, Build)
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os.Exit(0)
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}
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if debug {
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log := golog.GetLogger("sonar")
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log.Config.Level = golog.DebugLevel
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11
config.go
11
config.go
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@ -23,6 +23,11 @@ type Config struct {
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VolumeDownCommand []string `json:"volDnCommand"`
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VolumeMuteCommand []string `json:"volMuteCommand"`
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VolumeStatusCommand []string `json:"volStatusCommand"`
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// Scheduled cron tab.
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Hour int `json:"hour"`
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Minute int `json:"minute"`
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Days []string `json:"days"`
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}
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// DefaultConfig returns the default config.
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@ -32,6 +37,11 @@ func DefaultConfig() *Config {
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MediaPath: "./media",
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MediaCommand: []string{"mplayer", "%s"},
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// Default schedule.
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Hour: 6,
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Minute: 30,
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Days: []string{"1", "2", "3", "4", "5"}, // M-F
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// PulseAudio pactl commands.
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// pactl set-sink-volume <SINK> -<INT>%
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// Find the sink number from: pactl list
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@ -65,6 +75,7 @@ func LoadConfig() *Config {
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}
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defer fh.Close()
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log.Info("Reading config from %s", filepath)
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var c *Config
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decoder := json.NewDecoder(fh)
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decoder.Decode(&c)
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@ -0,0 +1,78 @@
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package sonar
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"time"
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)
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// SetSchedule installs the crontab.
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func (s *Sonar) SetSchedule(tod time.Time, days []string) error {
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// Assemble our new crontab entries.
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entries := []string{
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// m h dom mon dow command
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fmt.Sprintf("%d %d * * %s %s",
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tod.Minute(),
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tod.Hour(),
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strings.Join(days, ","),
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"curl -X POST http://"+s.url+"/playlist/start",
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),
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fmt.Sprintf("%d %d * * %s %s",
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tod.Minute(),
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tod.Add(1*time.Hour).Hour(),
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strings.Join(days, ","),
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"curl -X POST http://"+s.url+"/playlist/stop",
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),
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"",
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}
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// Concat all the user's custom crontab entries.
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crons, err := BuildCrontab()
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if err != nil {
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return fmt.Errorf("SetSchedule: BuildCrontab: %s", err)
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}
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// Final cron file is the user's custom crons plus the new ones.
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crontab := strings.Join(append(crons, entries...), "\n")
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fmt.Println(crontab)
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// Install the crontab.
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cmd := exec.Command("crontab", "-")
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var out bytes.Buffer
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var stderr bytes.Buffer
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cmd.Stdin = strings.NewReader(crontab)
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cmd.Stdout = &out
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cmd.Stderr = &stderr
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err = cmd.Run()
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if err != nil {
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return fmt.Errorf("SetSchedule: crontab -: %s\nSTDOUT: %s\nSTDERR: %s", err, out.String(), stderr.String())
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}
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return nil
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}
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// BuildCrontab concatenates all the crontabs from crontab.in/
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func BuildCrontab() ([]string, error) {
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var crontab []string
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err := filepath.Walk("./crontab.in", func(path string, info os.FileInfo, err error) error {
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if info.IsDir() {
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return nil
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}
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data, err := ioutil.ReadFile(path)
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if err != nil {
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return fmt.Errorf("ReadAll(%s): %s", path, err)
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}
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lines := strings.Split(string(data), "\n")
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crontab = append(crontab, lines...)
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return nil
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})
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if err != nil {
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return nil, err
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}
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return crontab, nil
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}
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@ -0,0 +1,22 @@
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# Edit this file to introduce tasks to be run by cron.
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#
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# Each task to run has to be defined through a single line
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# indicating with different fields when the task will be run
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# and what command to run for the task
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#
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# To define the time you can provide concrete values for
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# minute (m), hour (h), day of month (dom), month (mon),
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# and day of week (dow) or use '*' in these fields (for 'any').#
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# Notice that tasks will be started based on the cron's system
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# daemon's notion of time and timezones.
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#
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# Output of the crontab jobs (including errors) is sent through
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# email to the user the crontab file belongs to (unless redirected).
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#
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# For example, you can run a backup of all your user accounts
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# at 5 a.m every week with:
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# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
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#
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# For more information see the manual pages of crontab(5) and cron(8)
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#
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# m h dom mon dow command
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@ -0,0 +1,6 @@
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[program:sonar]
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command = /home/kirsle/sonar.pi/sonar
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directory = /home/kirsle/sonar.pi
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user = kirsle
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# vim:ft=dosini
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47
music.go
47
music.go
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@ -3,10 +3,12 @@ package sonar
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import (
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"errors"
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"fmt"
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"math/rand"
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"os/exec"
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"path/filepath"
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"strconv"
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"strings"
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"time"
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)
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// Player manages playing music one track at a time.
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@ -16,6 +18,26 @@ type Player struct {
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cmd *exec.Cmd
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}
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// Watch the running playlist to advance the next track.
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func (s *Sonar) Watch() {
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var p = s.Player
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for {
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if p.Running() {
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if err := p.cmd.Wait(); err != nil {
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log.Error("Player.Watch: p.cmd.Wait: %s", err)
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}
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p.cmd = nil
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// Next track?
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log.Info("Track ended, play next")
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if err := s.PlayNext(); err != nil {
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log.Info("EOF: %s", err)
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}
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}
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time.Sleep(1 * time.Second)
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}
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}
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// Run the playlist.
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func (p *Player) Run(playlist []string) {
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p.playlist = playlist
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@ -34,15 +56,17 @@ func (p *Player) Stop() error {
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}
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p.cmd = nil
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p.playlist = []string{}
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p.index = 0
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return nil
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}
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// Next returns the next song.
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func (p *Player) Next() (string, bool) {
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p.index++
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if p.index < len(p.playlist) {
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return p.playlist[p.index], true
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next := p.playlist[p.index]
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p.index++
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return next, true
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}
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return "", false
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}
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@ -56,23 +80,18 @@ func (p *Player) Status() string {
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var (
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index = p.index
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length = len(p.playlist)
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pct float64
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)
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if length > 0 {
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pct = float64(index / length)
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}
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parts = append(parts, fmt.Sprintf(
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"Track %d of %d (%.2f%%)",
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"Track %d of %d",
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index,
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length,
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pct,
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))
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// Append current track.
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if index < len(p.playlist) {
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if index <= len(p.playlist) {
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parts = append(parts, fmt.Sprintf(
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"Now playing: %s",
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p.playlist[index],
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p.playlist[index-1],
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))
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}
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} else {
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@ -136,9 +155,10 @@ func (s *Sonar) StartPlaylist() error {
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// Shuffle the files.
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log.Debug("StartPlaylist: shuffled %d media files", len(files))
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// rand.Shuffle(len(files), func(i, j int) {
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// files[i], files[j] = files[j], files[i]
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// })
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for i := range files {
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j := rand.Intn(i + 1)
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files[i], files[j] = files[j], files[i]
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}
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// Install the playlist and go.
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s.Player.Run(files)
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@ -176,5 +196,6 @@ func (s *Sonar) PlayNext() error {
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if !ok {
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return errors.New("end of playlist")
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}
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s.Player.Stop()
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return s.Play(filename)
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}
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45
routes.go
45
routes.go
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@ -3,6 +3,7 @@ package sonar
|
|||
import (
|
||||
"html/template"
|
||||
"net/http"
|
||||
"time"
|
||||
|
||||
"github.com/gorilla/mux"
|
||||
)
|
||||
|
|
@ -23,6 +24,11 @@ func (s *Sonar) Register() *mux.Router {
|
|||
"Flashes": flashes,
|
||||
"Volume": s.Volume(),
|
||||
"PlaylistStatus": s.Player.Status(),
|
||||
|
||||
// Current schedule
|
||||
"Hour": s.Config.Hour,
|
||||
"Minute": s.Config.Minute,
|
||||
"Days": NewSet(s.Config.Days),
|
||||
}
|
||||
templ.ExecuteTemplate(w, "index.gohtml", v)
|
||||
})
|
||||
|
|
@ -46,6 +52,45 @@ func (s *Sonar) Register() *mux.Router {
|
|||
s.FlashAndRedirect(r, w, "/", "Playlist stopped!")
|
||||
}
|
||||
})
|
||||
POST.HandleFunc("/playlist/next", func(w http.ResponseWriter, r *http.Request) {
|
||||
err := s.PlayNext()
|
||||
if err != nil {
|
||||
s.FlashAndRedirect(r, w, "/", "Error: "+err.Error())
|
||||
} else {
|
||||
s.FlashAndRedirect(r, w, "/", "Playlist advanced!")
|
||||
}
|
||||
})
|
||||
POST.HandleFunc("/playlist/schedule", func(w http.ResponseWriter, r *http.Request) {
|
||||
var (
|
||||
timestamp = r.FormValue("time")
|
||||
days = r.Form["day"]
|
||||
)
|
||||
|
||||
// Validate the inputs.
|
||||
dt, err := time.Parse("15:04", timestamp)
|
||||
if err != nil {
|
||||
s.Abort(r, w, "Invalid time stamp.")
|
||||
return
|
||||
}
|
||||
if len(days) == 0 {
|
||||
s.Abort(r, w, "Select one or more days!")
|
||||
return
|
||||
}
|
||||
|
||||
// Save the intended schedule to our config on disk.
|
||||
s.Config.Hour = dt.Hour()
|
||||
s.Config.Minute = dt.Minute()
|
||||
s.Config.Days = days
|
||||
SaveConfig(s.Config)
|
||||
|
||||
// Save the crontab to disk.
|
||||
err = s.SetSchedule(dt, days)
|
||||
if err != nil {
|
||||
s.Abort(r, w, err.Error())
|
||||
} else {
|
||||
s.FlashAndRedirect(r, w, "/", "Schedule saved!")
|
||||
}
|
||||
})
|
||||
POST.HandleFunc("/volume/higher", func(w http.ResponseWriter, r *http.Request) {
|
||||
err := s.VolumeUp()
|
||||
if err != nil {
|
||||
|
|
|
|||
Binary file not shown.
|
After Width: | Height: | Size: 15 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 18 KiB |
16
sessions.go
16
sessions.go
|
|
@ -1,10 +1,20 @@
|
|||
package sonar
|
||||
|
||||
import "net/http"
|
||||
import (
|
||||
"fmt"
|
||||
"net/http"
|
||||
)
|
||||
|
||||
// Abort with an error.
|
||||
func (s *Sonar) Abort(r *http.Request, w http.ResponseWriter, message string, v ...interface{}) {
|
||||
w.WriteHeader(http.StatusBadRequest)
|
||||
fmt.Fprintf(w, message, v...)
|
||||
}
|
||||
|
||||
// FlashAndRedirect to flash and redirect away.
|
||||
func (s *Sonar) FlashAndRedirect(r *http.Request, w http.ResponseWriter, url string, flash string, v ...string) {
|
||||
s.Flash(r, w, flash, v...)
|
||||
func (s *Sonar) FlashAndRedirect(r *http.Request, w http.ResponseWriter, url string, flash string, v ...interface{}) {
|
||||
log.Debug("Flash: %s", fmt.Sprintf(flash, v...))
|
||||
s.Flash(r, w, fmt.Sprintf(flash, v...))
|
||||
w.Header().Add("Location", url)
|
||||
w.WriteHeader(http.StatusFound)
|
||||
}
|
||||
|
|
|
|||
13
sonar.go
13
sonar.go
|
|
@ -19,6 +19,7 @@ type Sonar struct {
|
|||
Debug bool
|
||||
Player *Player
|
||||
Config *Config
|
||||
url string
|
||||
|
||||
n *negroni.Negroni
|
||||
router *mux.Router
|
||||
|
|
@ -45,16 +46,18 @@ func New() *Sonar {
|
|||
)
|
||||
s.n.UseHandler(router)
|
||||
|
||||
// Watch the player to advance to the next track.
|
||||
go s.Watch()
|
||||
|
||||
return s
|
||||
}
|
||||
|
||||
// ListenAndServe starts the HTTP app.
|
||||
func (s *Sonar) ListenAndServe(address string) error {
|
||||
label := address
|
||||
if strings.HasPrefix(label, ":") {
|
||||
label = "0.0.0.0" + label
|
||||
s.url = address
|
||||
if strings.HasPrefix(s.url, ":") {
|
||||
s.url = "0.0.0.0" + s.url
|
||||
}
|
||||
log.Info("Listening at http://%s", label)
|
||||
|
||||
log.Info("Listening at http://%s", s.url)
|
||||
return http.ListenAndServe(address, s.n)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,43 @@
|
|||
package sonar
|
||||
|
||||
import "strconv"
|
||||
|
||||
// Set is a lookup set of strings.
|
||||
type Set map[string]interface{}
|
||||
|
||||
// NewSet makes a new Set from a list of strings.
|
||||
func NewSet(input []string) Set {
|
||||
set := Set{}
|
||||
for _, v := range input {
|
||||
set[v] = nil
|
||||
}
|
||||
return set
|
||||
}
|
||||
|
||||
// In queries if the value is in the set.
|
||||
func (s Set) In(v string) bool {
|
||||
_, ok := s[v]
|
||||
return ok
|
||||
}
|
||||
|
||||
// SliceToSet makes a slice into a set map.
|
||||
func SliceToSet(slice []string) map[string]bool {
|
||||
var result = make(map[string]bool)
|
||||
for _, v := range slice {
|
||||
result[v] = true
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
// Str2IntSlice converts a string slice to an int slice.
|
||||
func Str2IntSlice(str []string) ([]int, error) {
|
||||
result := make([]int, len(str))
|
||||
for i, literal := range str {
|
||||
val, err := strconv.Atoi(literal)
|
||||
if err != nil {
|
||||
return result, err
|
||||
}
|
||||
result[i] = val
|
||||
}
|
||||
return result, nil
|
||||
}
|
||||
|
|
@ -1,7 +1,7 @@
|
|||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<title>time.caskir.net</title>
|
||||
<title>Sonar</title>
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
|
||||
<meta http-equiv="content-type" value="text/html; encoding=UTF-8">
|
||||
<link rel="stylesheet" href="/css/bootstrap.min.css">
|
||||
|
|
@ -19,8 +19,6 @@
|
|||
<div class="container">
|
||||
<div class="row">
|
||||
<div class="col">
|
||||
<h1>time.caskir.net</h1>
|
||||
|
||||
{{ range .Flashes }}
|
||||
<div class="alert alert-info">{{ . }}</div>
|
||||
{{ end }}
|
||||
|
|
@ -60,7 +58,7 @@
|
|||
<div class="col">
|
||||
<div class="card mb-4">
|
||||
<div class="card-header">
|
||||
Alan Watts Alarm Clock
|
||||
Alarm Clock Playlist
|
||||
</div>
|
||||
<div class="card-body">
|
||||
<p>
|
||||
|
|
@ -90,52 +88,52 @@
|
|||
Schedule
|
||||
</div>
|
||||
<div class="card-body">
|
||||
<p>
|
||||
<a href="/crontab.txt">See the current schedule</a>
|
||||
</p>
|
||||
<form method="POST" action="/playlist/schedule">
|
||||
|
||||
<label for="time">Time:</label>
|
||||
<input type="time" name="time" class="form-control mb-2" value="05:30">
|
||||
<input type="time" name="time" class="form-control mb-2" value="{{ printf "%02d" .Hour }}:{{ .Minute }}">
|
||||
|
||||
<label>Days of week:</label>
|
||||
<ul class="list-unstyled">
|
||||
<li>
|
||||
<label>
|
||||
<input type="checkbox" name="day" value="0"> Sunday
|
||||
<input type="checkbox" name="day" value="0"{{ if .Days.In "0" }} checked{{ end }}> Sunday
|
||||
</label>
|
||||
</li>
|
||||
<li>
|
||||
<label>
|
||||
<input type="checkbox" name="day" value="1" checked> Monday
|
||||
<input type="checkbox" name="day" value="1"{{ if .Days.In "1" }} checked{{ end }}> Monday
|
||||
</label>
|
||||
</li>
|
||||
<li>
|
||||
<label>
|
||||
<input type="checkbox" name="day" value="2" checked> Tuesday
|
||||
<input type="checkbox" name="day" value="2"{{ if .Days.In "2" }} checked{{ end }}> Tuesday
|
||||
</label>
|
||||
</li>
|
||||
<li>
|
||||
<label>
|
||||
<input type="checkbox" name="day" value="3" checked> Wednesday
|
||||
<input type="checkbox" name="day" value="3"{{ if .Days.In "3" }} checked{{ end }}> Wednesday
|
||||
</label>
|
||||
</li>
|
||||
<li>
|
||||
<label>
|
||||
<input type="checkbox" name="day" value="4" checked> Thursday
|
||||
<input type="checkbox" name="day" value="4"{{ if .Days.In "4" }} checked{{ end }}> Thursday
|
||||
</label>
|
||||
</li>
|
||||
<li>
|
||||
<label>
|
||||
<input type="checkbox" name="day" value="5" checked> Friday
|
||||
<input type="checkbox" name="day" value="5"{{ if .Days.In "5" }} checked{{ end }}> Friday
|
||||
</label>
|
||||
</li>
|
||||
<li>
|
||||
<label>
|
||||
<input type="checkbox" name="day" value="6"> Saturday
|
||||
<input type="checkbox" name="day" value="6"{{ if .Days.In "6" }} checked{{ end }}> Saturday
|
||||
</label>
|
||||
</li>
|
||||
</ul>
|
||||
|
||||
<button name="action" value="schedule" class="form-control btn btn-primary">Set Schedule</button>
|
||||
</form>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
|
|
|||
Loading…
Reference in New Issue