From 4ee25d5a2d88c5c77be834f26681b9a08de44f4e Mon Sep 17 00:00:00 2001
From: Baikov Dmitrii <44803026+D-Baykov@users.noreply.github.com>
Date: Thu, 15 Oct 2020 13:06:34 +0300
Subject: [PATCH] PROX-461: Add IpGenerator (#34)

---
 build_utils                                   |  2 +-
 pom.xml                                       |  2 +-
 .../common/utils/generator/IpGenerator.java   | 35 +++++++++++++++++++
 .../utils/generator/IpGeneratorTest.java      | 26 ++++++++++++++
 4 files changed, 63 insertions(+), 2 deletions(-)
 create mode 100644 src/main/java/com/rbkmoney/adapter/common/utils/generator/IpGenerator.java
 create mode 100644 src/test/java/com/rbkmoney/adapter/common/utils/generator/IpGeneratorTest.java

diff --git a/build_utils b/build_utils
index 34f432a..f42e059 160000
--- a/build_utils
+++ b/build_utils
@@ -1 +1 @@
-Subproject commit 34f432a1e8e0adedbba23ecd29c1eb2412a8d416
+Subproject commit f42e059d9ec93826ba4ad23232eed8ce67bd5486
diff --git a/pom.xml b/pom.xml
index 75ecd51..fe217ff 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
     </parent>
 
     <artifactId>adapter-common-lib</artifactId>
-    <version>0.0.27</version>
+    <version>0.0.28</version>
     <packaging>jar</packaging>
 
     <name>adapter-common-lib</name>
diff --git a/src/main/java/com/rbkmoney/adapter/common/utils/generator/IpGenerator.java b/src/main/java/com/rbkmoney/adapter/common/utils/generator/IpGenerator.java
new file mode 100644
index 0000000..a23e952
--- /dev/null
+++ b/src/main/java/com/rbkmoney/adapter/common/utils/generator/IpGenerator.java
@@ -0,0 +1,35 @@
+package com.rbkmoney.adapter.common.utils.generator;
+
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.util.StringUtils;
+
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+
+@Slf4j
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+public final class IpGenerator {
+
+    public static final String DEFAULT_IP_ADDRESS = "127.0.0.1";
+
+    public static String checkAndGenerate(String ip) {
+        return checkAndGenerate(ip, DEFAULT_IP_ADDRESS);
+    }
+
+    public static String checkAndGenerate(String ip, String defaultIpAddress) {
+        try {
+            InetAddress address = InetAddress.getByName(ip);
+            if (StringUtils.isEmpty(ip) || address instanceof Inet6Address) {
+                return defaultIpAddress;
+            }
+        } catch (UnknownHostException e) {
+            log.error("Error when convert ipAddress: {}", ip, e);
+            return defaultIpAddress;
+        }
+        return ip;
+    }
+
+}
diff --git a/src/test/java/com/rbkmoney/adapter/common/utils/generator/IpGeneratorTest.java b/src/test/java/com/rbkmoney/adapter/common/utils/generator/IpGeneratorTest.java
new file mode 100644
index 0000000..b606b34
--- /dev/null
+++ b/src/test/java/com/rbkmoney/adapter/common/utils/generator/IpGeneratorTest.java
@@ -0,0 +1,26 @@
+package com.rbkmoney.adapter.common.utils.generator;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public final class IpGeneratorTest {
+
+    public static final String IP_V4 = "123.0.0.2";
+
+    @Test
+    public void checkAndGenerate() {
+        String expectedIp = "127.0.0.1";
+        String resultIp = IpGenerator.checkAndGenerate("2001:0db8:85a3:0000:0000:8a2e:0370:7334");
+        Assert.assertEquals(expectedIp, resultIp);
+
+        resultIp = IpGenerator.checkAndGenerate("");
+        Assert.assertEquals(expectedIp, resultIp);
+
+        resultIp = IpGenerator.checkAndGenerate(null);
+        Assert.assertEquals(expectedIp, resultIp);
+
+        resultIp = IpGenerator.checkAndGenerate(IP_V4);
+        Assert.assertEquals(IP_V4, resultIp);
+    }
+
+}