From c3121bfa6c00682173a7f1fba9d4c524b8ef517e Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Sun, 29 Dec 2019 16:49:43 +0100
Subject: Handle queries in state

---
 .../cloudatlas/agent/messages/StanikMessage.java    |  3 ++-
 .../agent/messages/UpdateQueriesMessage.java        | 21 +++++++++++++++++++++
 .../edu/mimuw/cloudatlas/agent/modules/Stanik.java  | 15 +++++++++++++++
 3 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/UpdateQueriesMessage.java

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

diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/StanikMessage.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/StanikMessage.java
index da35f2d..b23f6e0 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/StanikMessage.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/StanikMessage.java
@@ -6,7 +6,8 @@ import pl.edu.mimuw.cloudatlas.agent.modules.ModuleType;
 public abstract class StanikMessage extends AgentMessage {
     public enum Type {
         GET_STATE,
-        UPDATE_ATTRIBUTES
+        UPDATE_ATTRIBUTES,
+        UPDATE_QUERIES
     }
 
     private Type type;
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/UpdateQueriesMessage.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/UpdateQueriesMessage.java
new file mode 100644
index 0000000..58ad55a
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/UpdateQueriesMessage.java
@@ -0,0 +1,21 @@
+package pl.edu.mimuw.cloudatlas.agent.messages;
+
+import java.util.Map;
+import java.util.Map.Entry;
+
+import pl.edu.mimuw.cloudatlas.model.Attribute;
+import pl.edu.mimuw.cloudatlas.model.ValueQuery;
+import pl.edu.mimuw.cloudatlas.model.ValueTime;
+
+public class UpdateQueriesMessage extends StanikMessage {
+    private Map<Attribute, Entry<ValueQuery, ValueTime>> queries;
+
+    public UpdateQueriesMessage(String messageId, long timestamp, Map<Attribute, Entry<ValueQuery, ValueTime>> queries) {
+        super(messageId, timestamp, Type.UPDATE_QUERIES);
+        this.queries = queries;
+    }
+
+    public Map<Attribute, Entry<ValueQuery, ValueTime>> getQueries() {
+        return queries;
+    }
+}
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 a31f265..e8721b3 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
@@ -9,6 +9,7 @@ import pl.edu.mimuw.cloudatlas.agent.messages.GetStateMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.StateMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.StanikMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.UpdateAttributesMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.UpdateQueriesMessage;
 import pl.edu.mimuw.cloudatlas.model.Attribute;
 import pl.edu.mimuw.cloudatlas.model.AttributesMap;
 import pl.edu.mimuw.cloudatlas.model.PathName;
@@ -46,6 +47,9 @@ public class Stanik extends Module {
             case UPDATE_ATTRIBUTES:
                 handleUpdateAttributes((UpdateAttributesMessage) message);
                 break;
+            case UPDATE_QUERIES:
+                handleUpdateQueries((UpdateQueriesMessage) message);
+                break;
             default:
                 throw new InvalidMessageType("This type of message cannot be handled by Stanik");
         }
@@ -74,6 +78,17 @@ public class Stanik extends Module {
         }
     }
 
+    public void handleUpdateQueries(UpdateQueriesMessage message) {
+        for (Entry<Attribute, Entry<ValueQuery, ValueTime>> entry : message.getQueries().entrySet()) {
+            Attribute attribute = entry.getKey();
+            ValueTime timestamp = entry.getValue().getValue();
+            Entry<ValueQuery, ValueTime> currentTimestampedQuery = queries.get(attribute);
+            if (currentTimestampedQuery == null || valueLower(currentTimestampedQuery.getValue(), timestamp)) {
+                queries.put(entry.getKey(), entry.getValue());
+            }
+        }
+    }
+
     private boolean valueLower(Value a, Value b) {
         return ((ValueBoolean) a.isLowerThan(b)).getValue();
     }
-- 
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