daemonizable, removed deps

Author: jpillora

Diff for: README.md

@@ -23,18 +23,36 @@ npm install -g sleep-server
     -p, --port <port>  Port to run server on (default: 57339)
     -H, --host <host>  Interface to run server on (default: 0.0.0.0)
     -u, --url <url>    URL to trigger sleep (default: sleep)
-    -d, --delay <ms>   Delay in milliseconds (default: 1000)
+    -w, --wait <ms>    Wait in milliseconds before sleeping (default: 3000)
+    -d, --daemonize    Daemonize the sleep server and send output to a file (default: log.txt)
 ```
 
 ### Example
 
+Host A
 ```sh
 $ sleep-server
 Listening for sleep requests at http://0.0.0.0:57339/sleep
+```
+
+Host B
+```sh
+$ curl http://host-a:57339/sleep...
+ok
+```
+
+Host A
+```
 #1:
   Sleeping in 1000ms
   Time: Fri Jun 13 2014 22:32:47 GMT+1000 (EST)
   IP address: 10.0.0.1
+```
+
+Then when you wake the Host A...
+
+Host A
+```
 #2:
   Woke
   Time: Fri Jun 13 2014 22:36:15 GMT+1000 (EST)

Diff for: package.json

@@ -1,12 +1,11 @@
 {
   "name": "sleep-server",
-  "version": "0.2.1",
+  "version": "0.3.2",
   "main": "./server",
   "bin": {
     "sleep-server": "bin/sleep-server"
   },
   "dependencies": {
-    "commander": "^2.2.0",
-    "wake-event": "0.0.1"
+    "commander": "^2.2.0"
   }
 }

Diff for: server.js

@@ -1,6 +1,5 @@
 
 var exec = require('child_process').exec;
-var wake = require('wake-event');
 var os = require('os');
 var http = require('http');
 
@@ -26,31 +25,56 @@ program
   .option('-p, --port <port>', 'Port to run server on (default: 57339)', 57339)
   .option('-H, --host <host>', 'Interface to run server on (default: 0.0.0.0)', '0.0.0.0')
   .option('-u, --url <url>', 'URL to trigger sleep (default: sleep)', 'sleep')
-  .option('-d, --delay <ms>', 'Delay in milliseconds (default: 1000)', 1000)
+  .option('-w, --wait <ms>', 'Wait in milliseconds before sleeping (default: 3000)', 3000)
+  .option('-d, --daemonize', 'Daemonize the sleep server and send output to a file (default: log.txt)', 'log.txt')
   .parse(process.argv);
 
+//daemonize?
+if(program.daemonize && program.args.indexOf('is-daemon') === -1) {
+  var path = program.daemonize;
+  var fs = require('fs');
+  var spawn = require('child_process').spawn;
+  var log = fs.openSync(path, 'a');
+
+  var prog = process.argv[1];
+  var args = process.argv.slice(2);
+  args.push('is-daemon');
+
+  var child = spawn(prog, args, {
+    detached: true,
+    stdio: [ 'ignore', log, log ]
+  });
+  child.unref();
+  process.exit(1);
+  return;
+}
+
 //add a slash
 if(program.url.charAt(0) !== '/')
   program.url = '/'+program.url;
 
 var msgId = 1;
-
 http.createServer(function (request,response) {
   if(request.url.indexOf(program.url) !== 0)
-    return response.end();
-
+    return response.end('not-ok');
   console.log("#%s:\n  Sleeping in %sms\n  Time: %s\n  IP address: %s",
-              msgId++, program.delay, new Date(), request.connection.remoteAddress);
-
+              msgId++, program.wait, new Date(), request.connection.remoteAddress);
   setTimeout(function() {
     exec(command);
-  }, program.delay);
+  }, program.wait);
   response.end('ok');
 }).listen(program.port, function() {
   console.log('Listening for sleep requests at http://%s:%s%s', program.host, program.port, program.url);
 });
 
-wake(function() {
-  console.log("#%s:\n  Woke\n  Time: %s", msgId++, new Date());
-});
+//if interval is late by more than 2secs, assume has just awoken
+var checkInterval = 5000;
+var threshold = 2000;
+var lastTime = Date.now();
+setInterval(function() {
+  var currentTime = Date.now();
+  if (currentTime > (lastTime + checkInterval + threshold))
+    console.log("#%s:\n  Woke\n  Time: %s", msgId++, new Date());
+  lastTime = currentTime;
+}, checkInterval);