Make use of the new cache feature of the request backend for pinejs-client 1.2.0 to make use of an ETags based cache for requests to the api.

package.json

@@ -22,7 +22,7 @@
     "pubnub": "~3.6.4",
     "randomstring": "~1.0.3",
     "request": "^2.51.0",
-    "pinejs-client": "^1.0.0",
+    "pinejs-client": "^1.2.0",
     "sqlite3": "~3.0.4",
     "tty.js": "~0.2.13",
     "typed-error": "~0.1.0"

src/application.coffee

@@ -13,7 +13,8 @@ logger = require './lib/logger'
 {docker} = dockerUtils
 
 PLATFORM_ENDPOINT = url.resolve(config.apiEndpoint, '/ewa/')
-resinAPI = new PlatformAPI(PLATFORM_ENDPOINT)
+resinApi = new PlatformAPI(PLATFORM_ENDPOINT)
+cachedResinApi = resinApi.clone({}, cache: {})
 
 knex('config').select('value').where(key: 'uuid').then ([ uuid ]) ->
 	logger.init(
@@ -173,7 +174,7 @@ exports.update = update = ->
 	.then ([ [ apiKey ], [ uuid ], apps ]) ->
 		apiKey = apiKey.value
 		uuid = uuid.value
-		resinAPI.get(
+		cachedResinApi.get(
 			resource: 'application'
 			options:
 				expand: 'environment_variable'
@@ -289,7 +290,7 @@ getDeviceID = do ->
 				knex('config').select('value').where(key: 'uuid')
 			])
 			.spread ([{value: apiKey}], [{value: uuid}]) ->
-				resinAPI.get(
+				resinApi.get(
 					resource: 'device'
 					options:
 						select: 'id'
@@ -326,7 +327,7 @@ exports.updateDeviceState = updateDeviceState = do ->
 				stateDiff = getStateDiff()
 				if _.size(stateDiff) is 0
 					return
-				resinAPI.patch
+				resinApi.patch
 					resource: 'device'
 					id: deviceID
 					body: stateDiff

src/bootstrap.coffee

@@ -9,7 +9,7 @@ PlatformAPI = require 'pinejs-client'
 fs = Promise.promisifyAll(require('fs'))
 
 PLATFORM_ENDPOINT = url.resolve(config.apiEndpoint, '/ewa/')
-resinAPI = new PlatformAPI(PLATFORM_ENDPOINT)
+resinApi = new PlatformAPI(PLATFORM_ENDPOINT)
 
 registerDevice = (apiKey, userId, applicationId, deviceType, uuid) ->
 	# I'd be nice if the UUID matched the output of a SHA-256 function, but although the length limit of the CN
@@ -19,7 +19,7 @@ registerDevice = (apiKey, userId, applicationId, deviceType, uuid) ->
 	if not uuid?
 		uuid = crypto.pseudoRandomBytes(31).toString('hex')
 
-	resinAPI.post(
+	resinApi.post(
 		resource: 'device'
 		body:
 			user: userId