From 21442408e5326e6db61e080fd5972c6c471e4df6 Mon Sep 17 00:00:00 2001
From: struga <kennny007@yandex.ru>
Date: Mon, 30 Oct 2023 14:15:31 +0300
Subject: [PATCH] Add local id gen (#72)

---
 pom.xml                                       |  2 +-
 .../flow/lib/service/LocalIdGenerator.java    | 18 ++++++++++++++
 .../lib/service/LocalIdGeneratorTest.java     | 24 +++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/dev/vality/adapter/flow/lib/service/LocalIdGenerator.java
 create mode 100644 src/test/java/dev/vality/adapter/flow/lib/service/LocalIdGeneratorTest.java

diff --git a/pom.xml b/pom.xml
index 9d6cb99..2638d27 100644
--- a/pom.xml
+++ b/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>
diff --git a/src/main/java/dev/vality/adapter/flow/lib/service/LocalIdGenerator.java b/src/main/java/dev/vality/adapter/flow/lib/service/LocalIdGenerator.java
new file mode 100644
index 0000000..4f76c7f
--- /dev/null
+++ b/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;
+    }
+}
diff --git a/src/test/java/dev/vality/adapter/flow/lib/service/LocalIdGeneratorTest.java b/src/test/java/dev/vality/adapter/flow/lib/service/LocalIdGeneratorTest.java
new file mode 100644
index 0000000..56e3144
--- /dev/null
+++ b/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);
+    }
+}
\ No newline at end of file