diff --git a/app/src/main/java/lightcontainer/interfaces/ProtocolRepository.java b/app/src/main/java/lightcontainer/interfaces/ProtocolRepository.java
new file mode 100644
index 0000000..2ee0743
--- /dev/null
+++ b/app/src/main/java/lightcontainer/interfaces/ProtocolRepository.java
@@ -0,0 +1,15 @@
+package lightcontainer.interfaces;
+
+import lightcontainer.protocol.ProtocolReader;
+import lightcontainer.protocol.ProtocolWriter;
+
+public interface ProtocolRepository {
+
+    boolean executeReader(String data);
+
+    String executeWriter(String... datas);
+
+    void addReader(ProtocolReader reader);
+
+    void addWriter(ProtocolWriter writer);
+}
diff --git a/app/src/main/java/lightcontainer/repository/ProtocolRepositoryImpl.java b/app/src/main/java/lightcontainer/repository/ProtocolRepositoryImpl.java
new file mode 100644
index 0000000..52071f6
--- /dev/null
+++ b/app/src/main/java/lightcontainer/repository/ProtocolRepositoryImpl.java
@@ -0,0 +1,44 @@
+package lightcontainer.repository;
+
+import lightcontainer.interfaces.ProtocolRepository;
+import lightcontainer.protocol.ProtocolReader;
+import lightcontainer.protocol.ProtocolWriter;
+
+import java.util.HashSet;
+import java.util.Set;
+
+public class ProtocolRepositoryImpl implements ProtocolRepository {
+    private Set<ProtocolReader> readers = new HashSet<>();
+    private Set<ProtocolWriter> writers = new HashSet<>();
+
+    @Override
+    public boolean executeReader(String data) {
+        for (ProtocolReader reader : readers) {
+            if (reader.execute(data)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public String executeWriter(String... datas) {
+        for (ProtocolWriter writer : writers) {
+            String command = writer.execute(datas);
+            if (command != null) {
+                return command;
+            }
+        }
+        return null;
+    }
+
+    @Override
+    public void addReader(ProtocolReader reader) {
+        this.readers.add(reader);
+    }
+
+    @Override
+    public void addWriter(ProtocolWriter writer) {
+        this.writers.add(writer);
+    }
+}