Add Configuration system.

3 files changed, 70 insertions, 0 deletions

diff --git a/same/src/main/java/com/orbekk/same/config/Configuration.java b/same/src/main/java/com/orbekk/same/config/Configuration.java
new file mode 100644
index 0000000..dce9dee
--- /dev/null
+++ b/same/src/main/java/com/orbekk/same/config/Configuration.java
@@ -0,0 +1,52 @@
+package com.orbekk.same.config;
+
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.Enumeration;
+import java.util.Properties;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class Configuration {
+    public final static String configurationProperty =
+            "com.orbekk.same.config.file";
+            
+    Logger logger = LoggerFactory.getLogger(getClass());
+    Properties configuration = new Properties();
+    
+    private Configuration() {
+        // Use factory methods.
+    }
+    
+    public static Configuration load() {
+        Configuration configuration = new Configuration();
+        configuration.loadDefault();
+        return configuration;
+    }
+    
+    public void loadDefault() {
+        String filename = System.getProperty(configurationProperty);
+        if (filename != null) {
+            try {
+                configuration.load(new FileReader(filename));
+            } catch (FileNotFoundException e) {
+                logger.error("Failed to load configuration. {}", e);
+                logger.error("Failed to load configuration. {}={}",
+                        configurationProperty, filename);
+            } catch (IOException e) {
+                logger.error("Failed to load configuration. {}", e);
+                logger.error("Failed to load configuration. {}={}",
+                        configurationProperty, filename);
+            }
+        } else {
+            logger.error("Failed to load configuration. {}={}",
+                    configurationProperty, filename);
+        }
+    }
+    
+    public String getProperty(String name) {
+        return configuration.getProperty(name);
+    }
+}
diff --git a/same/src/test/java/com/orbekk/same/config/ConfigurationTest.java b/same/src/test/java/com/orbekk/same/config/ConfigurationTest.java
new file mode 100644
index 0000000..e5b42aa
--- /dev/null
+++ b/same/src/test/java/com/orbekk/same/config/ConfigurationTest.java
@@ -0,0 +1,17 @@
+package com.orbekk.same.config;
+
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+
+public class ConfigurationTest {
+    @Test public void testLoadConfiguration() {
+        String resources = "src/test/resources/";
+        System.setProperty(Configuration.configurationProperty,
+                resources + "com/orbekk/same/config/test.properties");
+        Configuration configuration = Configuration.load();
+        assertEquals("Test Value",
+                configuration.getProperty("testProperty"));
+                
+    }
+}
diff --git a/same/src/test/resources/com/orbekk/same/config/test.properties b/same/src/test/resources/com/orbekk/same/config/test.properties
new file mode 100644
index 0000000..45e1cc4
--- /dev/null
+++ b/same/src/test/resources/com/orbekk/same/config/test.properties
@@ -0,0 +1 @@
+testProperty=Test Value