Add nodes and data size to extra param (#44)

diff --git a/pom.xml b/pom.xml
index 7f639e5..27809ff 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>com.baidu.hugegraph</groupId>
     <artifactId>hugegraph-common</artifactId>
-    <version>1.7.2</version>
+    <version>1.7.3</version>
 
     <name>hugegraph-common</name>
     <url>https://github.com/hugegraph/hugegraph-common</url>
@@ -218,7 +218,7 @@
                         <manifestEntries>
                             <!-- Must be on one line, otherwise the automatic
                                  upgrade script cannot replace the version number -->
-                            <Implementation-Version>1.7.2.0</Implementation-Version>
+                            <Implementation-Version>1.7.3.0</Implementation-Version>
                         </manifestEntries>
                     </archive>
                 </configuration>
diff --git a/src/main/java/com/baidu/hugegraph/license/ExtraParam.java b/src/main/java/com/baidu/hugegraph/license/ExtraParam.java
index 43f6d05..ebd2f94 100644
--- a/src/main/java/com/baidu/hugegraph/license/ExtraParam.java
+++ b/src/main/java/com/baidu/hugegraph/license/ExtraParam.java
@@ -41,15 +41,30 @@
     @JsonProperty("cpus")
     private int cpus;
 
+    // The unit is MB
     @JsonProperty("ram")
     private int ram;
 
     @JsonProperty("threads")
     private int threads;
 
+    // The unit is MB
     @JsonProperty("memory")
     private int memory;
 
+    @JsonProperty("nodes")
+    private int nodes;
+
+    // The unit is MB
+    @JsonProperty("data_size")
+    private long dataSize;
+
+    @JsonProperty("vertices")
+    private long vertices;
+
+    @JsonProperty("edges")
+    private long edges;
+
     public String id() {
         return this.id;
     }
@@ -85,4 +100,20 @@
     public int memory() {
         return this.memory;
     }
+
+    public int nodes() {
+        return this.nodes;
+    }
+
+    public long dataSize() {
+        return this.dataSize;
+    }
+
+    public long vertices() {
+        return this.vertices;
+    }
+
+    public long edges() {
+        return this.edges;
+    }
 }
diff --git a/src/main/java/com/baidu/hugegraph/version/CommonVersion.java b/src/main/java/com/baidu/hugegraph/version/CommonVersion.java
index 5c4ed4b..29487b9 100644
--- a/src/main/java/com/baidu/hugegraph/version/CommonVersion.java
+++ b/src/main/java/com/baidu/hugegraph/version/CommonVersion.java
@@ -27,5 +27,5 @@
 
     // The second parameter of Version.of() is for all-in-one JAR
     public static final Version VERSION = Version.of(CommonVersion.class,
-                                                     "1.7.2");
+                                                     "1.7.3");
 }
diff --git a/src/test/java/com/baidu/hugegraph/unit/license/ExtraParamTest.java b/src/test/java/com/baidu/hugegraph/unit/license/ExtraParamTest.java
index 0e0cc22..9655019 100644
--- a/src/test/java/com/baidu/hugegraph/unit/license/ExtraParamTest.java
+++ b/src/test/java/com/baidu/hugegraph/unit/license/ExtraParamTest.java
@@ -40,7 +40,11 @@
                 + "\"cpus\":32,"
                 + "\"ram\":65536,"
                 + "\"threads\":96,"
-                + "\"memory\":32768"
+                + "\"memory\":32768,"
+                + "\"nodes\":3,"
+                + "\"data_size\":1024,"
+                + "\"vertices\":1000,"
+                + "\"edges\":2000"
                 + "}";
         ObjectMapper mapper = new ObjectMapper();
         ExtraParam param = mapper.readValue(json, ExtraParam.class);
@@ -53,5 +57,9 @@
         Assert.assertEquals(65536, param.ram());
         Assert.assertEquals(96, param.threads());
         Assert.assertEquals(32768, param.memory());
+        Assert.assertEquals(3, param.nodes());
+        Assert.assertEquals(1024, param.dataSize());
+        Assert.assertEquals(1000, param.vertices());
+        Assert.assertEquals(2000, param.edges());
     }
 }
diff --git a/src/test/java/com/baidu/hugegraph/unit/license/LicenseCreateParamTest.java b/src/test/java/com/baidu/hugegraph/unit/license/LicenseCreateParamTest.java
index cc9ddaa..7000cb5 100644
--- a/src/test/java/com/baidu/hugegraph/unit/license/LicenseCreateParamTest.java
+++ b/src/test/java/com/baidu/hugegraph/unit/license/LicenseCreateParamTest.java
@@ -59,7 +59,11 @@
                 + "\"cpus\":32,"
                 + "\"ram\":65536,"
                 + "\"threads\":96,"
-                + "\"memory\":32768"
+                + "\"memory\":32768,"
+                + "\"nodes\":3,"
+                + "\"data_size\":1024,"
+                + "\"vertices\":1000,"
+                + "\"edges\":2000"
                 + "},"
                 + "{"
                 + "\"id\":\"server-2\","
@@ -70,7 +74,11 @@
                 + "\"cpus\":64,"
                 + "\"ram\":65536,"
                 + "\"threads\":96,"
-                + "\"memory\":65536"
+                + "\"memory\":65536,"
+                + "\"nodes\":30,"
+                + "\"data_size\":10240,"
+                + "\"vertices\":10000,"
+                + "\"edges\":20000"
                 + "}"
                 + "]"
                 + "}";