[fix] Logging now survives child process restarts.

Author: AvianFlu

lib/forever/plugins/logger.js

@@ -7,29 +7,44 @@ exports.attach = function (options) {
   options = options || {};
   var monitor = this;
 
-  monitor.on('start', function startLogs(child, childData) {
+
+  if (options.outFile) {
+    monitor.stdout = options.stdout || fs.createWriteStream(options.outFile, {
+      flags: monitor.append ? 'a+' : 'w+',
+      encoding: 'utf8',
+      mode: 0644
+    });
+  }
+
+  if (options.errFile) {
+    monitor.stderr = options.stderr || fs.createWriteStream(options.errFile, {
+      flags: monitor.append ? 'a+' : 'w+',
+      encoding: 'utf8',
+      mode: 0644
+    });
+  }
+
+  monitor.on('start', startLogs);
+
+  monitor.on('restart', startLogs);
+
+  monitor.on('exit', function () {
+    monitor.stdout.end();
+    monitor.stderr.end();
+  });
+
+  function startLogs(child, childData) {
     if (monitor.child && !monitor.silent) {
-      monitor.child.stdout.pipe(process.stdout);
-      monitor.child.stderr.pipe(process.stderr);
-      if (monitor.outFile) {
-        monitor.stdout = fs.createWriteStream(monitor.outFile, {
-          flags: monitor.append ? 'a+' : 'w+',
-          encoding: 'utf8',
-          mode: 0644
-        });
-        monitor.child.stdout.pipe(monitor.stdout);
+      monitor.child.stdout.pipe(process.stdout, { end: false });
+      monitor.child.stderr.pipe(process.stderr, { end: false });
+      if (monitor.stdout) {
+        monitor.child.stdout.pipe(monitor.stdout, { end: false });
       }
-      if (monitor.errFile) {
-        monitor.stderr = fs.createWriteStream(monitor.errFile, {
-          flags: monitor.append ? 'a+' : 'w+',
-          encoding: 'utf8',
-          mode: 0644
-        });
-        monitor.child.stderr.pipe(monitor.stderr);
+      if (monitor.stderr) {
+        monitor.child.stderr.pipe(monitor.stderr, { end: false });
       }
     }
-  });
-
+  }
 };