server: Add extraction_method column to the blocks table

Defaults to PoW, a migration is required to set the correct values.

server/app/com/xsn/explorer/data/anorm/dao/BlockPostgresDAO.scala

@@ -20,15 +20,15 @@ class BlockPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderingSQLI
         |INSERT INTO blocks
         |  (
         |    blockhash, previous_blockhash, next_blockhash, tpos_contract, merkle_root, size,
-        |    height, version, time, median_time, nonce, bits, chainwork, difficulty
+        |    height, version, time, median_time, nonce, bits, chainwork, difficulty, extraction_method
         |  )
         |VALUES
         |  (
         |    {blockhash}, {previous_blockhash}, {next_blockhash}, {tpos_contract}, {merkle_root}, {size},
-        |    {height}, {version}, {time}, {median_time}, {nonce}, {bits}, {chainwork}, {difficulty}
+        |    {height}, {version}, {time}, {median_time}, {nonce}, {bits}, {chainwork}, {difficulty}, {extraction_method}::BLOCK_EXTRACTION_METHOD_TYPE
         |  )
         |RETURNING blockhash, previous_blockhash, next_blockhash, tpos_contract, merkle_root, size,
-        |          height, version, time, median_time, nonce, bits, chainwork, difficulty
+        |          height, version, time, median_time, nonce, bits, chainwork, difficulty, extraction_method
       """.stripMargin
     ).on(
       'blockhash -> block.hash.string,
@@ -44,7 +44,8 @@ class BlockPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderingSQLI
       'nonce -> block.nonce,
       'bits -> block.bits,
       'chainwork -> block.chainwork,
-      'difficulty -> block.difficulty
+      'difficulty -> block.difficulty,
+      'extraction_method -> block.extractionMethod.entryName
     ).as(parseBlock.singleOpt)
   }
 
@@ -59,7 +60,7 @@ class BlockPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderingSQLI
         |SET next_blockhash = {next_blockhash}
         |WHERE blockhash = {blockhash}
         |RETURNING blockhash, previous_blockhash, next_blockhash, tpos_contract, merkle_root, size,
-        |          height, version, time, median_time, nonce, bits, chainwork, difficulty
+        |          height, version, time, median_time, nonce, bits, chainwork, difficulty, extraction_method
       """.stripMargin
     ).on(
       'blockhash -> blockhash.string,
@@ -71,7 +72,7 @@ class BlockPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderingSQLI
     SQL(
       """
         |SELECT blockhash, previous_blockhash, next_blockhash, tpos_contract, merkle_root, size,
-        |       height, version, time, median_time, nonce, bits, chainwork, difficulty
+        |       height, version, time, median_time, nonce, bits, chainwork, difficulty, extraction_method
         |FROM blocks
         |WHERE blockhash = {blockhash}
       """.stripMargin
@@ -84,7 +85,7 @@ class BlockPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderingSQLI
     SQL(
       """
         |SELECT blockhash, previous_blockhash, next_blockhash, tpos_contract, merkle_root, size,
-        |       height, version, time, median_time, nonce, bits, chainwork, difficulty
+        |       height, version, time, median_time, nonce, bits, chainwork, difficulty, extraction_method
         |FROM blocks
         |WHERE height = {height}
       """.stripMargin
@@ -102,7 +103,7 @@ class BlockPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderingSQLI
     SQL(
       s"""
         |SELECT blockhash, previous_blockhash, next_blockhash, tpos_contract, merkle_root, size,
-        |       height, version, time, median_time, nonce, bits, chainwork, difficulty
+        |       height, version, time, median_time, nonce, bits, chainwork, difficulty, extraction_method
         |FROM blocks
         |$orderBy
         |OFFSET {offset}
@@ -131,7 +132,7 @@ class BlockPostgresDAO @Inject() (fieldOrderingSQLInterpreter: FieldOrderingSQLI
         |DELETE FROM blocks
         |WHERE blockhash = {blockhash}
         |RETURNING blockhash, previous_blockhash, next_blockhash, tpos_contract, merkle_root, size,
-        |          height, version, time, median_time, nonce, bits, chainwork, difficulty
+        |          height, version, time, median_time, nonce, bits, chainwork, difficulty, extraction_method
       """.stripMargin
     ).on(
       "blockhash" -> blockhash.string

server/app/com/xsn/explorer/data/anorm/parsers/BlockParsers.scala

@@ -25,6 +25,10 @@ object BlockParsers {
       .map(Blockhash.from)
       .map { _.getOrElse(throw new RuntimeException("corrupted merkle_root")) }
 
+  val parseExtractionMethod = str("extraction_method")
+      .map(Block.ExtractionMethod.withNameInsensitiveOption)
+      .map { _.getOrElse(throw new RuntimeException("corrupted extraction_method")) }
+
   val parseSize = int("size").map(Size.apply)
   val parseHeight = int("height").map(Height.apply)
   val parseVersion = int("version")
@@ -48,7 +52,8 @@ object BlockParsers {
           parseNonce ~
           parseBits ~
           parseChainwork ~
-          parseDifficulty).map {
+          parseDifficulty ~
+          parseExtractionMethod).map {
 
     case hash ~
         nextBlockhash ~
@@ -63,7 +68,8 @@ object BlockParsers {
         nonce ~
         bits ~
         chainwork ~
-        difficulty =>
+        difficulty ~
+        extractionMethod =>
 
       Block(
         hash = hash,
@@ -79,7 +85,8 @@ object BlockParsers {
         bits = bits,
         chainwork = chainwork,
         difficulty = difficulty,
-        version = version
+        version = version,
+        extractionMethod = extractionMethod
       )
   }
 }

server/app/com/xsn/explorer/models/persisted/Block.scala

@@ -1,6 +1,7 @@
 package com.xsn.explorer.models.persisted
 
 import com.xsn.explorer.models._
+import enumeratum._
 
 case class Block(
     hash: Blockhash,
@@ -16,4 +17,18 @@ case class Block(
     nonce: Long,
     bits: String,
     chainwork: String,
-    difficulty: BigDecimal)
+    difficulty: BigDecimal,
+    extractionMethod: Block.ExtractionMethod)
+
+object Block {
+
+  sealed abstract class ExtractionMethod(override val entryName: String) extends EnumEntry
+  object ExtractionMethod extends Enum[ExtractionMethod] {
+
+    val values = findValues
+
+    final case object ProofOfWork extends ExtractionMethod("PoW")
+    final case object ProofOfStake extends ExtractionMethod("PoS")
+    final case object TrustlessProofOfStake extends ExtractionMethod("TPoS")
+  }
+}

server/app/com/xsn/explorer/services/LedgerSynchronizerService.scala

@@ -162,7 +162,10 @@ class LedgerSynchronizerService @Inject() (
     val result = for {
       rpcBlock <- xsnService.getBlock(blockhash).toFutureOr
       transactions <- transactionRPCService.getTransactions(rpcBlock.transactions).toFutureOr
-      block = rpcBlock.into[Block].transform
+      block = rpcBlock
+          .into[Block]
+          .withFieldConst(_.extractionMethod, Block.ExtractionMethod.ProofOfWork) // TODO: Get proper method
+          .transform
     } yield (block, transactions)
 
     result.toFuture

server/conf/evolutions/default/12.sql

@@ -0,0 +1,15 @@
+
+# --- !Ups
+
+CREATE TYPE BLOCK_EXTRACTION_METHOD_TYPE AS ENUM ('PoW', 'PoS', 'TPoS');
+
+ALTER TABLE blocks
+    ADD COLUMN extraction_method BLOCK_EXTRACTION_METHOD_TYPE NOT NULL DEFAULT 'PoW';
+
+
+# --- !Downs
+
+ALTER TABLE blocks
+    DROP COLUMN extraction_method;
+
+DROP TYPE BLOCK_EXTRACTION_METHOD_TYPE;

server/test/com/xsn/explorer/helpers/BlockLoader.scala

@@ -3,7 +3,6 @@ package com.xsn.explorer.helpers
 import java.io.File
 
 import com.xsn.explorer.models._
-import io.scalaland.chimney.dsl._
 import play.api.libs.json.{JsValue, Json}
 
 object BlockLoader {
@@ -12,8 +11,7 @@ object BlockLoader {
 
   def get(blockhash: String): persisted.Block = {
     val rpcBlock = getRPC(blockhash)
-
+    Converters.toPersistedBlock(rpcBlock)
-    rpcBlock.into[persisted.Block].transform
   }
 
   def getRPC(blockhash: String): rpc.Block = {
@@ -33,7 +31,7 @@ object BlockLoader {
 
   def all(): List[persisted.Block] = {
     allRPC()
-        .map(_.into[persisted.Block].transform)
+        .map(Converters.toPersistedBlock)
   }
 
   def allRPC(): List[rpc.Block] = {

server/test/com/xsn/explorer/helpers/Converters.scala

@@ -8,6 +8,9 @@ import scala.language.implicitConversions
 object Converters {
 
   implicit def toPersistedBlock(rpcBlock: rpc.Block): persisted.Block = {
-    rpcBlock.into[persisted.Block].transform
+    rpcBlock
+        .into[persisted.Block]
+        .withFieldConst(_.extractionMethod, persisted.Block.ExtractionMethod.ProofOfWork) // TODO: Detect method
+        .transform
   }
 }