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src/main/tjava/com/r35157/libs/jupiter/perps/JupiterPerpsPositionService.tjava

@@ -1,45 +0,0 @@
-package com.r35157.libs.jupiter.perps;
-
-import java.io.IOException;
-import java.util.Set;
-
-/**
- * Service for reading Jupiter Perps positions.
- *
- * <p>This service is read-only. It does not open, close, modify, or sign transactions
- * for Jupiter Perps positions.</p>
- *
- * <p>The first supported operation is reading a known Jupiter Perps position account
- * and returning its decoded position data.</p>
- */
-public interface JupiterPerpsPositionService {
-    /**
-     * Reads a Jupiter Perps position from a known position account.
-     *
-     * <p>The supplied account must be the Solana account that stores the Jupiter Perps
-     * position state. It is not the wallet address, token account, custody account, pool
-     * account, or position request account.</p>
-     *
-     * @param positionAccount the Solana account address of the Jupiter Perps position
-     * @return the decoded Jupiter Perps position
-     * @throws IOException if the position account could not be fetched or decoded
-     * @throws InterruptedException if the calling thread is interrupted while fetching
-     *                              the position account
-     */
-    JupiterPerpsPosition getPosition(ΩJupiterPerpsPositionAccountΩ positionAccount)
-            throws IOException, InterruptedException;
-
-    /**
-     * Finds open Jupiter Perps positions owned by a wallet.
-     *
-     * <p>This method returns decoded Jupiter Perps position objects. It does not return
-     * raw Solana accounts or account ids.</p>
-     *
-     * @param owner the wallet address that owns the Jupiter Perps positions
-     * @return the open Jupiter Perps positions owned by the wallet
-     * @throws IOException if the position accounts could not be fetched or decoded
-     * @throws InterruptedException if the calling thread is interrupted while fetching positions
-     */
-    Set<JupiterPerpsPosition> getOpenPositions(ΩSolanaWalletIdΩ owner)
-            throws IOException, InterruptedException;
-}

src/main/tjava/com/r35157/libs/jupiter/perps/impl/anchoridl/AnchorIdlJupiterPerpsPositionDecoder.tjava

@@ -1,6 +1,7 @@
 package com.r35157.libs.jupiter.perps.impl.anchoridl;
 
 import com.r35157.libs.jupiter.perps.JupiterPerpsPosition;
+import com.r35157.libs.jupiter.perps.JupiterPerpsPositionDirection;
 import com.r35157.libs.solana.SolanaAccountInfo;
 
 import java.math.BigDecimal;
@@ -22,6 +23,9 @@ class AnchorIdlJupiterPerpsPositionDecoder {
             );
         }
 
+        JupiterPerpsPositionDirection direction =
+                decodeDirection(data[SIDE_OFFSET]);
+
         long rawEntryPrice = ByteBuffer
                 .wrap(data, PRICE_OFFSET, U64_LENGTH)
                 .order(ByteOrder.LITTLE_ENDIAN)
@@ -33,25 +37,44 @@ class AnchorIdlJupiterPerpsPositionDecoder {
 
         JupiterPerpsPosition pos = new JupiterPerpsPosition(
                 positionAccount,
-                entryPrice
+                entryPrice,
+                direction
         );
 
         return pos;
     }
 
+    private JupiterPerpsPositionDirection decodeDirection(
+            byte rawSide
+    ) {
+        // Jupiter Perps position side values are encoded as 1 = LONG, 2 = SHORT.
+        JupiterPerpsPositionDirection direction = switch (rawSide) {
+            case 1 -> JupiterPerpsPositionDirection.LONG;
+            case 2 -> JupiterPerpsPositionDirection.SHORT;
+            default -> throw new IllegalArgumentException(
+                    "Unknown Jupiter Perps position side: " + rawSide
+            );
+        };
+
+        return direction;
+    }
+
     private static final int ANCHOR_DISCRIMINATOR_LENGTH = 8;
     private static final int PUBLIC_KEY_LENGTH = 32;
     private static final int I64_LENGTH = 8;
     private static final int U64_LENGTH = 8;
     private static final int SIDE_ENUM_LENGTH = 1;
 
-    private static final int PRICE_OFFSET =
+    private static final int SIDE_OFFSET =
             ANCHOR_DISCRIMINATOR_LENGTH
                     + PUBLIC_KEY_LENGTH // owner
                     + PUBLIC_KEY_LENGTH // pool
                     + PUBLIC_KEY_LENGTH // custody
                     + PUBLIC_KEY_LENGTH // collateralCustody
                     + I64_LENGTH        // openTime
-                    + I64_LENGTH        // updateTime
+                    + I64_LENGTH;       // updateTime
+
+    private static final int PRICE_OFFSET =
+            SIDE_OFFSET
                     + SIDE_ENUM_LENGTH; // side
 }

src/main/tjava/com/r35157/libs/jupiter/perps/impl/anchoridl/AnchorIdlJupiterPerpsServiceImpl.tjava

@@ -1,7 +1,7 @@
 package com.r35157.libs.jupiter.perps.impl.anchoridl;
 
 import com.r35157.libs.jupiter.perps.JupiterPerpsPosition;
-import com.r35157.libs.jupiter.perps.JupiterPerpsPositionService;
+import com.r35157.libs.jupiter.perps.JupiterPerpsService;
 import com.r35157.libs.solana.SolanaAccountInfo;
 import com.r35157.libs.solana.SolanaBlockChain;
 import com.r35157.libs.solana.SolanaProgramAccountMemcmpFilter;
@@ -10,9 +10,9 @@ import java.io.IOException;
 import java.util.HashSet;
 import java.util.Set;
 
-public class AnchorIdlJupiterPerpsPositionServiceImpl implements JupiterPerpsPositionService {
+public class AnchorIdlJupiterPerpsServiceImpl implements JupiterPerpsService {
 
-    public AnchorIdlJupiterPerpsPositionServiceImpl(
+    public AnchorIdlJupiterPerpsServiceImpl(
             SolanaBlockChain solanaBlockChain
     ) {
         this.solanaBlockChain = solanaBlockChain;

src/main/tjava/com/r35157/nenjim/hubd/impl/ref/Main.tjava

@@ -1,8 +1,8 @@
 package com.r35157.nenjim.hubd.impl.ref;
 
 import com.r35157.libs.jupiter.perps.JupiterPerpsPosition;
-import com.r35157.libs.jupiter.perps.JupiterPerpsPositionService;
+import com.r35157.libs.jupiter.perps.JupiterPerpsService;
-import com.r35157.libs.jupiter.perps.impl.anchoridl.AnchorIdlJupiterPerpsPositionServiceImpl;
+import com.r35157.libs.jupiter.perps.impl.anchoridl.AnchorIdlJupiterPerpsServiceImpl;
 import com.r35157.libs.solana.SolanaBlockChain;
 import com.r35157.libs.solana.impl.ref.SolanaBlockChainImpl;
 import com.r35157.nenjim.hubd.ctx.Context;