Add getPendingTransactions to TransactionPoolService (#7813)

Signed-off-by: Fabio Di Fabio <fabio.difabio@consensys.net>

Author: fab-10

CHANGELOG.md

@@ -11,6 +11,7 @@
 - Fine tune already seen txs tracker when a tx is removed from the pool [#7755](https://github.com/hyperledger/besu/pull/7755)
 - Create and publish Besu BOM (Bill of Materials) [#7615](https://github.com/hyperledger/besu/pull/7615) 
 - Update Java dependencies [#7786](https://github.com/hyperledger/besu/pull/7786)
+- Add a method to get all the transaction in the pool, to the `TransactionPoolService`, to easily access the transaction pool content from plugins [#7813](https://github.com/hyperledger/besu/pull/7813)
 
 ### Bug fixes
 

besu/src/main/java/org/hyperledger/besu/services/TransactionPoolServiceImpl.java

@@ -14,9 +14,12 @@
  */
 package org.hyperledger.besu.services;
 
+import org.hyperledger.besu.datatypes.PendingTransaction;
 import org.hyperledger.besu.ethereum.eth.transactions.TransactionPool;
 import org.hyperledger.besu.plugin.services.transactionpool.TransactionPoolService;
 
+import java.util.Collection;
+
 /** Service to enable and disable the transaction pool. */
 public class TransactionPoolServiceImpl implements TransactionPoolService {
 
@@ -40,4 +43,9 @@ public void disableTransactionPool() {
   public void enableTransactionPool() {
     transactionPool.setEnabled();
   }
+
+  @Override
+  public Collection<? extends PendingTransaction> getPendingTransactions() {
+    return transactionPool.getPendingTransactions();
+  }
 }

plugin-api/build.gradle

@@ -71,7 +71,7 @@ Calculated : ${currentHash}
 tasks.register('checkAPIChanges', FileStateChecker) {
   description = "Checks that the API for the Plugin-API project does not change without deliberate thought"
   files = sourceSets.main.allJava.files
-  knownHash = '1VIGlJuGiaEVUksIjTTHDt7SIjjJE9+DU8rYk/ze3XM='
+  knownHash = 'G3cpM0HGYp4G1u6dN2CRZiEEsgce6jy9rkIlT1blUb4='
 }
 check.dependsOn('checkAPIChanges')
 

plugin-api/src/main/java/org/hyperledger/besu/plugin/services/transactionpool/TransactionPoolService.java

@@ -14,13 +14,23 @@
  */
 package org.hyperledger.besu.plugin.services.transactionpool;
 
+import org.hyperledger.besu.datatypes.PendingTransaction;
 import org.hyperledger.besu.plugin.services.BesuService;
 
+import java.util.Collection;
+
 /** Service to enable and disable the transaction pool. */
 public interface TransactionPoolService extends BesuService {
   /** Enables the transaction pool. */
   void disableTransactionPool();
 
   /** Disables the transaction pool. */
   void enableTransactionPool();
+
+  /**
+   * Returns the collection of pending transactions.
+   *
+   * @return a collection of pending transactions
+   */
+  Collection<? extends PendingTransaction> getPendingTransactions();
 }