From 5f7e37d7b26832b3b512f9dda310cb9bc92c93fb Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Fri, 27 Dec 2019 21:08:44 +0100
Subject: Create new zones with UpdateAttributes message

---
 .../edu/mimuw/cloudatlas/agent/modules/Stanik.java | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)

(limited to 'src/main/java/pl/edu/mimuw/cloudatlas/agent/modules')

diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java
index b8db08a..a457a94 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java
@@ -1,9 +1,17 @@
 package pl.edu.mimuw.cloudatlas.agent.modules;
 
+import java.util.Map.Entry;
+
 import pl.edu.mimuw.cloudatlas.agent.messages.AgentMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.GetHierarchyMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.HierarchyMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.StanikMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.UpdateAttributesMessage;
+import pl.edu.mimuw.cloudatlas.model.AttributesMap;
+import pl.edu.mimuw.cloudatlas.model.Attribute;
+import pl.edu.mimuw.cloudatlas.model.PathName;
+import pl.edu.mimuw.cloudatlas.model.Value;
+import pl.edu.mimuw.cloudatlas.model.ValueString;
 import pl.edu.mimuw.cloudatlas.model.ZMI;
 
 public class Stanik extends Module {
@@ -19,6 +27,9 @@ public class Stanik extends Module {
             case GET_HIERARCHY:
                 handleGetHierarchy((GetHierarchyMessage) message);
                 break;
+            case UPDATE_ATTRIBUTES:
+                handleUpdateAttributes((UpdateAttributesMessage) message);
+                break;
             default:
                 throw new InvalidMessageType("This type of message cannot be handled by Stanik");
         }
@@ -28,4 +39,41 @@ public class Stanik extends Module {
         HierarchyMessage response = new HierarchyMessage("", message.getRequestingModule(), 0, message.getRequestId(), hierarchy.clone());
         sendMessage(response);
     }
+
+    public void handleUpdateAttributes(UpdateAttributesMessage message) {
+        try {
+            addMissingZones(new PathName(message.getPathName()));
+            ZMI zone = hierarchy.findDescendant(message.getPathName());
+            for (Entry<Attribute, Value> entry : zone.getAttributes()) {
+                Attribute attribute = entry.getKey();
+                Value newValue = message.getAttributes().getOrNull(attribute);
+                if (newValue == null) {
+                    zone.getAttributes().remove(attribute);
+                }
+            }
+            for (Entry<Attribute, Value> entry : message.getAttributes()) {
+                zone.getAttributes().addOrChange(entry.getKey(), entry.getValue());
+            }
+        } catch (ZMI.NoSuchZoneException e) {
+            System.out.println("ERROR: zone should exist after being added");
+        }
+    }
+
+    private void addMissingZones(PathName path) {
+        try {
+            if (!hierarchy.descendantExists(path)) {
+                addMissingZones(path.levelUp());
+                ZMI parent = hierarchy.findDescendant(path.levelUp());
+                ZMI newSon = new ZMI(parent);
+                newSon.getAttributes().add("name", new ValueString(path.getSingletonName()));
+                parent.addSon(newSon);
+            }
+        } catch (ZMI.NoSuchZoneException e) {
+            System.out.println("ERROR: zone should exist after being added");
+        }
+    }
+
+    public ZMI getHierarchy() {
+        return hierarchy;
+    }
 }
-- 
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