From 3c33d22719225630761cb1ad97252dab977e2e36 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kjetil=20=C3=98rbekk?= <kjetil.orbekk@gmail.com>
Date: Thu, 19 Jan 2012 17:14:32 +0100
Subject: Implement the library interface to a SameClientImpl.

---
 same/src/main/java/com/orbekk/same/ClientApp.java  |  4 +--
 .../java/com/orbekk/same/ClientServiceImpl.java    | 22 +++++++++---
 same/src/main/java/com/orbekk/same/Same.java       | 42 ++++++++++++++++++++++
 .../main/java/com/orbekk/same/SameInterface.java   |  7 ----
 .../main/java/com/orbekk/same/UpdateConflict.java  |  3 ++
 5 files changed, 65 insertions(+), 13 deletions(-)
 create mode 100644 same/src/main/java/com/orbekk/same/Same.java

(limited to 'same/src')

diff --git a/same/src/main/java/com/orbekk/same/ClientApp.java b/same/src/main/java/com/orbekk/same/ClientApp.java
index 970f16d..3095a59 100644
--- a/same/src/main/java/com/orbekk/same/ClientApp.java
+++ b/same/src/main/java/com/orbekk/same/ClientApp.java
@@ -12,7 +12,7 @@ public class ClientApp {
     private Server server;
     private static final int timeout = 1000;
     
-    public ClientServiceImpl getClient(int port, String networkName,
+    public SameInterface getClient(int port, String networkName,
             String masterUrl) {
         logger.info("Starting client with port:{}, networkName:{}, masterUrl:{}",
                 new Object[]{port, networkName, masterUrl});
@@ -46,7 +46,7 @@ public class ClientApp {
         }
         
         client.joinNetwork(masterUrl + "MasterService.json");
-        return client;
+        return new Same(client);
     }
     
     public void run(int port, String networkName,
diff --git a/same/src/main/java/com/orbekk/same/ClientServiceImpl.java b/same/src/main/java/com/orbekk/same/ClientServiceImpl.java
index 46cdd86..75df9cc 100644
--- a/same/src/main/java/com/orbekk/same/ClientServiceImpl.java
+++ b/same/src/main/java/com/orbekk/same/ClientServiceImpl.java
@@ -1,5 +1,6 @@
 package com.orbekk.same;
 
+import org.codehaus.jackson.type.TypeReference;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -52,16 +53,29 @@ public class ClientServiceImpl implements ClientService, UrlReceiver {
                     "Run discovery service.", masterUrl);
         }
     }
+   
+    String lib_get(String name) {
+        return state.getDataOf(name);
+    }
+    
+    <T> T lib_get(String name, TypeReference<T> type) {
+        return state.getParsedData(name, type);
+    }
     
-    public boolean sendStateUpdate(String componentName, String data,
-            long revision) {
+    void lib_set(String name, String data) throws UpdateConflict {
         String masterUrl = state.getDataOf(".masterUrl");
+        long revision = state.getRevision(name) + 1;
         MasterService master = connections.getMaster(masterUrl);
         try {
-            return master.updateStateRequest(componentName, data, revision);
+            boolean success = master.updateStateRequest(name, data,
+                    revision);
+            if (!success) {
+                throw new UpdateConflict("State update conflict when " +
+                        "updating " + name);
+            }
         } catch (Exception e) {
             logger.error("Unable to contact master. Update fails.");
-            return false;
+            throw new UpdateConflict("Unable to contact master. Update fails.");
         }
     }
     
diff --git a/same/src/main/java/com/orbekk/same/Same.java b/same/src/main/java/com/orbekk/same/Same.java
new file mode 100644
index 0000000..b70c7aa
--- /dev/null
+++ b/same/src/main/java/com/orbekk/same/Same.java
@@ -0,0 +1,42 @@
+package com.orbekk.same;
+
+import java.util.List;
+
+import org.codehaus.jackson.type.TypeReference;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Same implements SameInterface {
+    private Logger logger = LoggerFactory.getLogger(getClass());
+    private ClientServiceImpl client;
+    
+    public Same(ClientServiceImpl client) {
+        this.client = client;
+    }
+    
+    @Override
+    public String get(String id) {
+        return client.lib_get(id);
+    }
+
+    @Override
+    public <T> T get(String id, TypeReference<T> type) {
+        return client.lib_get(id, type);
+    }
+
+    @Override
+    public List<String> getList(String id) {
+        return client.lib_get(id, new TypeReference<List<String>>() { });
+    }
+
+    @Override
+    public void set(String id, String data) throws UpdateConflict {
+        client.lib_set(id, data);
+    }
+
+    @Override
+    public void setObject(String id, Object data) {
+        throw new RuntimeException("Not implemented.");   
+    }
+
+}
diff --git a/same/src/main/java/com/orbekk/same/SameInterface.java b/same/src/main/java/com/orbekk/same/SameInterface.java
index a778f39..7541636 100644
--- a/same/src/main/java/com/orbekk/same/SameInterface.java
+++ b/same/src/main/java/com/orbekk/same/SameInterface.java
@@ -28,13 +28,6 @@ public interface SameInterface {
      */
     void set(String id, String data) throws UpdateConflict;
 
-    /**
-     * Set the state.
-     * 
-     * Retry until there is no conflict.
-     */
-    void forceSet(String id, String data);
-    
     /**
      * Set from an object: Pass it, e.g., a List<String>.
      */
diff --git a/same/src/main/java/com/orbekk/same/UpdateConflict.java b/same/src/main/java/com/orbekk/same/UpdateConflict.java
index 35fbb01..4ea5887 100644
--- a/same/src/main/java/com/orbekk/same/UpdateConflict.java
+++ b/same/src/main/java/com/orbekk/same/UpdateConflict.java
@@ -1,4 +1,7 @@
 package com.orbekk.same;
 
 public class UpdateConflict extends Exception {
+    public UpdateConflict(String string) {
+        super(string);
+    }
 }
-- 
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