Reaper decides if a device is present or not. Allows devices to "come back to life" if they start beating again.

lib/units/processor/index.js

@@ -54,8 +54,8 @@ module.exports = function(options) {
 
   devDealer.on('message', wirerouter()
     // Initial device message
-    .on(wire.DevicePresentMessage, function(channel, message, data) {
-      dbapi.saveDevice(message.serial, message)
+    .on(wire.DeviceIntroductionMessage, function(channel, message, data) {
+      dbapi.saveDeviceInitialState(message.serial, message)
         .then(function() {
           devDealer.send([
             message.provider.channel
@@ -67,6 +67,10 @@ module.exports = function(options) {
         })
     })
     // Workerless messages
+    .on(wire.DevicePresentMessage, function(channel, message, data) {
+      dbapi.setDevicePresent(message.serial)
+      appDealer.send([channel, data])
+    })
     .on(wire.DeviceAbsentMessage, function(channel, message, data) {
       dbapi.setDeviceAbsent(message.serial)
       appDealer.send([channel, data])

lib/units/provider/index.js

@@ -151,7 +151,7 @@ module.exports = function(options) {
         // Tell others we found a device
         push.send([
           wireutil.global
-        , wireutil.envelope(new wire.DevicePresentMessage(
+        , wireutil.envelope(new wire.DeviceIntroductionMessage(
             device.id
           , wireutil.toDeviceStatus(device.type)
           , new wire.ProviderMessage(

lib/units/reaper/index.js

@@ -56,7 +56,17 @@ module.exports = function(options) {
     lifecycle.fatal()
   })
 
-  ttlset.on('timeout', function(serial) {
+  ttlset.on('insert', function(serial) {
+    log.info('Device "%s" is present', serial)
+    push.send([
+      wireutil.global
+    , wireutil.envelope(new wire.DevicePresentMessage(
+        serial
+      ))
+    ])
+  })
+
+  ttlset.on('drop', function(serial) {
     log.info('Reaping device "%s" due to heartbeat timeout', serial)
     push.send([
       wireutil.global
@@ -73,7 +83,7 @@ module.exports = function(options) {
           .then(function(list) {
             var now = Date.now()
             list.forEach(function(device) {
-              ttlset.bump(device.serial, now)
+              ttlset.bump(device.serial, now, TtlSet.SILENT)
             })
           })
       })
@@ -81,14 +91,14 @@ module.exports = function(options) {
 
   function listenToChanges() {
     sub.on('message', wirerouter()
-      .on(wire.DevicePresentMessage, function(channel, message) {
+      .on(wire.DeviceIntroductionMessage, function(channel, message) {
         ttlset.bump(message.serial, Date.now())
       })
       .on(wire.DeviceHeartbeatMessage, function(channel, message) {
         ttlset.bump(message.serial, Date.now())
       })
       .on(wire.DeviceAbsentMessage, function(channel, message) {
-        ttlset.drop(message.serial)
+        ttlset.drop(message.serial, TtlSet.SILENT)
       })
       .handler())
   }

lib/units/websocket/index.js

@@ -120,26 +120,35 @@ module.exports = function(options) {
       .on(wire.DeviceLogMessage, function(channel, message) {
         socket.emit('device.log', message)
       })
-      .on(wire.DevicePresentMessage, function(channel, message) {
+      .on(wire.DeviceIntroductionMessage, function(channel, message) {
         socket.emit('device.add', {
           important: true
         , data: {
             serial: message.serial
+          , present: false
           , provider: message.provider
-          , present: true
           , owner: null
+          , status: message.status
+          , ready: false
           , reverseForwards: []
           }
         })
       })
+      .on(wire.DevicePresentMessage, function(channel, message) {
+        socket.emit('device.change', {
+          important: true
+        , data: {
+            serial: message.serial
+          , present: true
+          }
+        })
+      })
       .on(wire.DeviceAbsentMessage, function(channel, message) {
         socket.emit('device.remove', {
           important: true
         , data: {
             serial: message.serial
           , present: false
-          , ready: false
-          , using: false
           , likelyLeaveReason: 'device_absent'
           }
         })