From afa32431d242d60471e5431d654784ee64b63bbf Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Fri, 27 Dec 2019 11:28:46 +0100
Subject: Begin Stanik impelementation

* Get cloned hierarchy
* Test on empty hierarchy
---
 .../agent/messages/GetHierarchyMessage.java        | 22 +++++++++++++++
 .../agent/messages/HierarchyMessage.java           | 17 ++++++++++++
 .../cloudatlas/agent/messages/ResponseMessage.java | 31 ++++++++++++++++++++++
 .../cloudatlas/agent/messages/StanikMessage.java   | 25 +++++++++++++++++
 .../edu/mimuw/cloudatlas/agent/modules/Module.java | 10 +++++++
 .../mimuw/cloudatlas/agent/modules/ModuleType.java |  4 ++-
 .../edu/mimuw/cloudatlas/agent/modules/Stanik.java | 31 ++++++++++++++++++++++
 7 files changed, 139 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/GetHierarchyMessage.java
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/HierarchyMessage.java
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/ResponseMessage.java
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/StanikMessage.java
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java

(limited to 'src/main')

diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/GetHierarchyMessage.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/GetHierarchyMessage.java
new file mode 100644
index 0000000..d3c749d
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/GetHierarchyMessage.java
@@ -0,0 +1,22 @@
+package pl.edu.mimuw.cloudatlas.agent.messages;
+
+import pl.edu.mimuw.cloudatlas.agent.modules.ModuleType;
+
+public class GetHierarchyMessage extends StanikMessage {
+    private ModuleType requestingModule;
+    private long requestId;
+
+    public GetHierarchyMessage(String messageId, long timestamp, ModuleType requestingModule, long requestId) {
+        super(messageId, timestamp, Type.GET_HIERARCHY);
+        this.requestingModule = requestingModule;
+        this.requestId = requestId;
+    }
+
+    public ModuleType getRequestingModule() {
+        return requestingModule;
+    }
+
+    public long getRequestId() {
+        return requestId;
+    }
+}
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/HierarchyMessage.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/HierarchyMessage.java
new file mode 100644
index 0000000..9f7ca70
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/HierarchyMessage.java
@@ -0,0 +1,17 @@
+package pl.edu.mimuw.cloudatlas.agent.messages;
+
+import pl.edu.mimuw.cloudatlas.agent.modules.ModuleType;
+import pl.edu.mimuw.cloudatlas.model.ZMI;
+
+public class HierarchyMessage extends ResponseMessage {
+    private ZMI zmi;
+
+    public HierarchyMessage(String messageId, ModuleType destinationModule, long timestamp, long requestId, ZMI zmi) {
+        super(messageId, destinationModule, timestamp, Type.HIERARCHY, requestId);
+        this.zmi = zmi;
+    }
+
+    public ZMI getZMI() {
+        return zmi;
+    }
+}
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/ResponseMessage.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/ResponseMessage.java
new file mode 100644
index 0000000..171cf07
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/ResponseMessage.java
@@ -0,0 +1,31 @@
+package pl.edu.mimuw.cloudatlas.agent.messages;
+
+import pl.edu.mimuw.cloudatlas.agent.modules.Module;
+import pl.edu.mimuw.cloudatlas.agent.modules.ModuleType;
+
+public abstract class ResponseMessage extends AgentMessage {
+    public enum Type {
+        HIERARCHY
+    }
+
+    Type type;
+    long requestId;
+
+    public ResponseMessage(String messageId, ModuleType destinationModule, long timestamp, Type type, long requestId) {
+        super(messageId, destinationModule, timestamp);
+        this.type = type;
+        this.requestId = requestId;
+    }
+
+    public void callMe(Module module) throws InterruptedException, Module.InvalidMessageType {
+        module.handleTyped(this);
+    }
+
+    public long getRequestId() {
+        return requestId;
+    }
+
+    public Type getType() {
+        return type;
+    }
+}
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
new file mode 100644
index 0000000..d2b3064
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/messages/StanikMessage.java
@@ -0,0 +1,25 @@
+package pl.edu.mimuw.cloudatlas.agent.messages;
+
+import pl.edu.mimuw.cloudatlas.agent.modules.Module;
+import pl.edu.mimuw.cloudatlas.agent.modules.ModuleType;
+
+public abstract class StanikMessage extends AgentMessage {
+    public enum Type {
+        GET_HIERARCHY
+    }
+
+    private Type type;
+
+    public StanikMessage(String messageId, long timestamp, Type type) {
+        super(messageId, ModuleType.STATE, timestamp);
+        this.type = type;
+    }
+
+    public Type getType() {
+        return type;
+    }
+
+    public void callMe(Module module) throws InterruptedException, Module.InvalidMessageType {
+        module.handleTyped(this);
+    }
+}
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Module.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Module.java
index a50a95f..d0bf083 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Module.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Module.java
@@ -3,7 +3,9 @@ package pl.edu.mimuw.cloudatlas.agent.modules;
 import pl.edu.mimuw.cloudatlas.agent.Executor;
 import pl.edu.mimuw.cloudatlas.agent.messages.AgentMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.TimerSchedulerMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.ResponseMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.RMIMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.StanikMessage;
 
 /*
  * A Module is a (potentially stateful) event handler.
@@ -34,6 +36,14 @@ public abstract class Module {
         throw new InvalidMessageType("Got an RMIMessage in module " + moduleType.toString());
     }
 
+    public void handleTyped(StanikMessage message) throws InterruptedException, InvalidMessageType {
+        throw new InvalidMessageType("Got a StanikMessage in module " + moduleType.toString());
+    }
+
+    public void handleTyped(ResponseMessage message) throws InterruptedException, InvalidMessageType {
+        throw new InvalidMessageType("Got a ResponseMessage in module " + moduleType.toString());
+    }
+
     public void setExecutor(Executor executor) {
         this.executor = executor;
     }
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/ModuleType.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/ModuleType.java
index ff4a92e..d221f06 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/ModuleType.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/ModuleType.java
@@ -8,5 +8,7 @@ public enum ModuleType {
     GOSSIP_IN,
     GOSSIP_OUT,
     STATE,
-    QUERY
+    QUERY,
+    // for testing
+    TEST
 }
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
new file mode 100644
index 0000000..b8db08a
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/Stanik.java
@@ -0,0 +1,31 @@
+package pl.edu.mimuw.cloudatlas.agent.modules;
+
+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.model.ZMI;
+
+public class Stanik extends Module {
+    private ZMI hierarchy;
+
+    public Stanik() {
+        super(ModuleType.STATE);
+        hierarchy = new ZMI();
+    }
+
+    public void handleTyped(StanikMessage message) throws InterruptedException, InvalidMessageType {
+        switch(message.getType()) {
+            case GET_HIERARCHY:
+                handleGetHierarchy((GetHierarchyMessage) message);
+                break;
+            default:
+                throw new InvalidMessageType("This type of message cannot be handled by Stanik");
+        }
+    }
+
+    public void handleGetHierarchy(GetHierarchyMessage message) throws InterruptedException {
+        HierarchyMessage response = new HierarchyMessage("", message.getRequestingModule(), 0, message.getRequestId(), hierarchy.clone());
+        sendMessage(response);
+    }
+}
-- 
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