Updated README and startFakeWorkers script

README.md

@@ -86,6 +86,11 @@ Start the dataClay, destroying any dataClay instance that could be active.
 docker-compose -f master-dataclay.yml -f backend-dataclay.yml down -v --remove-orphans
 ```
 
+You can also run the following to clean up a little (you won't lose anything important on your machine):
+```
+sudo rm /opt/dataclay/* -rf | docker rm $(docker ps -a -q -f status=exited) |  docker rmi $(docker images -a -q -f dangling=true) | docker rm -f $(docker ps -aqf "ancestor=elasticeuh2020/fakeworkers")
+```
+
 If this Node is the **"master"** node, run:  
 ``` 
 docker-compose -f master-dataclay.yml up --build   

app/log4j2.xml

@@ -13,7 +13,10 @@
     <Logger name="app.DataclayWritingManager" level="info" additivity="false">
       <AppenderRef ref="Console"/>
     </Logger>
-    <Logger name="app.Utils" level="info" additivity="false">
+    <Logger name="app.Utils" level="debug" additivity="false">
+      <AppenderRef ref="Console"/>
+    </Logger>
+    <Logger name="app.ResourceManager" level="debug" additivity="false">
       <AppenderRef ref="Console"/>
     </Logger>
     <Root level="info">

app/src/main/java/app/NFRTool.java

@@ -55,7 +55,7 @@ public class NFRTool {
     private static float cpuThreshold;
     private static float energyThreshold;
 
-    private static final Logger logger = LogManager.getLogger(NFRTool.class.getName());
+    private static final Logger logger = LogManager.getLogger("NFRTool");
 
     /**
      * Retrieves app's usage.

startFakeWorkers.sh

 #!/bin/sh
 
-if [ "$(docker images -q elasticeuh2020/fakeworkers 2> /dev/null)" = "" ]; then
-  docker pull elasticeuh2020/fakeworkers
+http_response=$(curl -o /dev/null -s -w "%{http_code}\n" --unix-socket /var/run/docker.sock http://localhost/images/elasticeuh2020/fakeworkers/json)
+
+if [ $http_response = "404" ]; then
+  echo !!!ERROR!!! elasticeuh2020/fakeworkers does not exist!
+  http_responsee=$(curl -o /dev/null -s -w "%{http_code}\n" -X POST -H "Content-Type: application/json" --unix-socket /var/run/docker.sock http://localhost/images/create?fromImage=elasticeuh2020/fakeworkers&tag=latest)
+  if [ "$http_responsee" = "404" ] || [ $http_responsee = "500" ]; then 
+	  echo !!!ERROR!!! Something went wrong while pulling elasticeuh2020/fakeworkers $http_responsee
+  else
+	  echo Pulled elasticeuh2020/fakeworkers
+	  
+  fi
 fi
 
 containerJson=$(curl --unix-socket /var/run/docker.sock -H "Content-Type: application/json" -d '{"Image": "elasticeuh2020/fakeworkers", "Env": ["FAKE_WORKER=3"] }' -X POST http://localhost/containers/create)