Add local id gen (#72)

pom.xml

@@ -12,7 +12,7 @@
     </parent>
 
     <artifactId>adapter-flow-lib</artifactId>
-    <version>0.2.1</version>
+    <version>0.2.2</version>
     <packaging>jar</packaging>
 
     <name>adapter-flow-lib</name>

src/main/java/dev/vality/adapter/flow/lib/service/LocalIdGenerator.java

@@ -0,0 +1,18 @@
+package dev.vality.adapter.flow.lib.service;
+
+import lombok.RequiredArgsConstructor;
+import lombok.SneakyThrows;
+
+import java.nio.charset.StandardCharsets;
+import java.util.UUID;
+
+@RequiredArgsConstructor
+public class LocalIdGenerator implements IdGenerator {
+
+    @SneakyThrows
+    @Override
+    public Long get(String invoiceId) {
+        return UUID.nameUUIDFromBytes(invoiceId.getBytes(StandardCharsets.UTF_8)).getMostSignificantBits() &
+                Long.MAX_VALUE;
+    }
+}

src/test/java/dev/vality/adapter/flow/lib/service/LocalIdGeneratorTest.java

@@ -0,0 +1,24 @@
+package dev.vality.adapter.flow.lib.service;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+class LocalIdGeneratorTest {
+
+    public static final String TEST = "test";
+    public static final String TEST_2 = "test_2";
+
+    @Test
+    void get() {
+        LocalIdGenerator localIdGenerator = new LocalIdGenerator();
+
+        Long idTest1 = localIdGenerator.get(TEST);
+        Long idTest2 = localIdGenerator.get(TEST);
+
+        Assertions.assertEquals(idTest1, idTest2);
+
+        Long idTest3 = localIdGenerator.get(TEST_2);
+
+        Assertions.assertNotEquals(idTest1, idTest3);
+    }
+}