cherry pick support write back to original tag for jar (#34)

Author: Nicole00

nebula-algorithm/src/main/resources/application.conf

@@ -45,6 +45,8 @@
         space:nb
         # Nebula tag name, the algorithm result will be write into this tag
         tag:pagerank
+        # algorithm result is insert into new tag or update to original tag. type: insert/update
+        type:insert
     }
   }
 

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/config/Configs.scala

@@ -99,8 +99,15 @@ object NebulaConfigEntry {
     val pswd             = nebulaConfig.getString("write.pswd")
     val writeSpace       = nebulaConfig.getString("write.space")
     val writeTag         = nebulaConfig.getString("write.tag")
+    val writeType        = nebulaConfig.getString("write.type")
     val writeConfigEntry =
-      NebulaWriteConfigEntry(graphAddress, writeMetaAddress, user, pswd, writeSpace, writeTag)
+      NebulaWriteConfigEntry(graphAddress,
+                             writeMetaAddress,
+                             user,
+                             pswd,
+                             writeSpace,
+                             writeTag,
+                             writeType)
     NebulaConfigEntry(readConfigEntry, writeConfigEntry)
   }
 }
@@ -211,10 +218,11 @@ case class NebulaWriteConfigEntry(graphAddress: String = "",
                                   user: String = "",
                                   pswd: String = "",
                                   space: String = "",
-                                  tag: String = "") {
+                                  tag: String = "",
+                                  writeType: String = "insert") {
   override def toString: String = {
     s"NebulaWriteConfigEntry: " +
-      s"{graphAddress: $graphAddress, user: $user, password: $pswd, space: $space, tag: $tag}"
+      s"{graphAddress: $graphAddress, user: $user, password: $pswd, space: $space, tag: $tag, type: $writeType}"
   }
 }
 

nebula-algorithm/src/main/scala/com/vesoft/nebula/algorithm/writer/AlgoWriter.scala

@@ -6,7 +6,7 @@
 package com.vesoft.nebula.algorithm.writer
 
 import com.vesoft.nebula.connector.connector.NebulaDataFrameWriter
-import com.vesoft.nebula.connector.{NebulaConnectionConfig, WriteNebulaVertexConfig}
+import com.vesoft.nebula.connector.{NebulaConnectionConfig, WriteMode, WriteNebulaVertexConfig}
 import com.vesoft.nebula.algorithm.config.{AlgoConstants, Configs}
 import org.apache.spark.sql.DataFrame
 
@@ -22,6 +22,8 @@ class NebulaWriter(data: DataFrame, configs: Configs) extends AlgoWriter(data, c
     val tag          = configs.nebulaConfig.writeConfigEntry.tag
     val user         = configs.nebulaConfig.writeConfigEntry.user
     val passwd       = configs.nebulaConfig.writeConfigEntry.pswd
+    val writeType    = configs.nebulaConfig.writeConfigEntry.writeType
+    val writeMode    = if (writeType.equals("insert")) WriteMode.INSERT else WriteMode.UPDATE
 
     val config =
       NebulaConnectionConfig
@@ -30,13 +32,16 @@ class NebulaWriter(data: DataFrame, configs: Configs) extends AlgoWriter(data, c
         .withGraphAddress(graphAddress)
         .withConenctionRetry(2)
         .build()
-    val nebulaWriteVertexConfig: WriteNebulaVertexConfig = WriteNebulaVertexConfig
+    val nebulaWriteVertexConfig = WriteNebulaVertexConfig
       .builder()
+      .withUser(user)
+      .withPasswd(passwd)
       .withSpace(space)
       .withTag(tag)
       .withVidField(AlgoConstants.ALGO_ID_COL)
       .withVidAsProp(false)
       .withBatch(1000)
+      .withWriteMode(writeMode)
       .build()
     data.write.nebula(config, nebulaWriteVertexConfig).writeVertices()
   }