repos init.

src/main/java/com/serliunx/ddns/support/Configurer.java

@@ -0,0 +1,33 @@
+package com.serliunx.ddns.support;
+
+import com.serliunx.ddns.config.Configuration;
+import com.serliunx.ddns.core.context.MultipleSourceInstanceContext;
+
+/**
+ * @author SerLiunx
+ * @since 1.0
+ */
+public final class Configurer {
+
+    private Configuration configuration;
+    private MultipleSourceInstanceContext instanceContext;
+
+    Configurer(){}
+
+    public Configurer configuration(Configuration configuration){
+        Assert.notNull(configuration);
+        this.configuration = configuration;
+        return this;
+    }
+
+    public Configurer instanceContext(MultipleSourceInstanceContext instanceContext){
+        Assert.notNull(instanceContext);
+        this.instanceContext = instanceContext;
+        return this;
+    }
+
+    public SystemInitializer done(){
+        Assert.notNull(configuration, instanceContext);
+        return new SystemInitializer(configuration, instanceContext);
+    }
+}