wallet: batch external signer descriptor import

Co-authored-by: furszy <matiasfurszyfer@protonmail.com>

Author: Sjors

src/wallet/external_signer_scriptpubkeyman.cpp

@@ -16,7 +16,7 @@
 #include <vector>
 
 namespace wallet {
-bool ExternalSignerScriptPubKeyMan::SetupDescriptor(std::unique_ptr<Descriptor> desc)
+bool ExternalSignerScriptPubKeyMan::SetupDescriptor(WalletBatch& batch, std::unique_ptr<Descriptor> desc)
 {
     LOCK(cs_desc_man);
     assert(m_storage.IsWalletFlagSet(WALLET_FLAG_DESCRIPTORS));
@@ -29,13 +29,12 @@ bool ExternalSignerScriptPubKeyMan::SetupDescriptor(std::unique_ptr<Descriptor>
     m_wallet_descriptor = w_desc;
 
     // Store the descriptor
-    WalletBatch batch(m_storage.GetDatabase());
     if (!batch.WriteDescriptor(GetID(), m_wallet_descriptor)) {
         throw std::runtime_error(std::string(__func__) + ": writing descriptor failed");
     }
 
     // TopUp
-    TopUp();
+    TopUpWithDB(batch);
 
     m_storage.UnsetBlankWalletFlag(batch);
     return true;

src/wallet/external_signer_scriptpubkeyman.h

@@ -23,7 +23,7 @@ class ExternalSignerScriptPubKeyMan : public DescriptorScriptPubKeyMan
   /** Provide a descriptor at setup time
   * Returns false if already setup or setup fails, true if setup is successful
   */
-  bool SetupDescriptor(std::unique_ptr<Descriptor>desc);
+  bool SetupDescriptor(WalletBatch& batch, std::unique_ptr<Descriptor>desc);
 
   static ExternalSigner GetExternalSigner();
 

src/wallet/scriptpubkeyman.h

@@ -623,11 +623,6 @@ class DescriptorScriptPubKeyMan : public ScriptPubKeyMan
     //! Setup descriptors based on the given CExtkey
     bool SetupDescriptorGeneration(WalletBatch& batch, const CExtKey& master_key, OutputType addr_type, bool internal);
 
-    /** Provide a descriptor at setup time
-    * Returns false if already setup or setup fails, true if setup is successful
-    */
-    bool SetupDescriptor(std::unique_ptr<Descriptor>desc);
-
     bool HavePrivateKeys() const override;
 
     std::optional<int64_t> GetOldestKeyPoolTime() const override;

src/wallet/wallet.cpp

@@ -3585,6 +3585,10 @@ void CWallet::SetupDescriptorScriptPubKeyMans()
         UniValue signer_res = signer.GetDescriptors(account);
 
         if (!signer_res.isObject()) throw std::runtime_error(std::string(__func__) + ": Unexpected result");
+
+        WalletBatch batch(GetDatabase());
+        if (!batch.TxnBegin()) throw std::runtime_error("Error: cannot create db transaction for descriptors import");
+
         for (bool internal : {false, true}) {
             const UniValue& descriptor_vals = signer_res.find_value(internal ? "internal" : "receive");
             if (!descriptor_vals.isArray()) throw std::runtime_error(std::string(__func__) + ": Unexpected result");
@@ -3601,12 +3605,15 @@ void CWallet::SetupDescriptorScriptPubKeyMans()
                 }
                 OutputType t =  *desc->GetOutputType();
                 auto spk_manager = std::unique_ptr<ExternalSignerScriptPubKeyMan>(new ExternalSignerScriptPubKeyMan(*this, m_keypool_size));
-                spk_manager->SetupDescriptor(std::move(desc));
+                spk_manager->SetupDescriptor(batch, std::move(desc));
                 uint256 id = spk_manager->GetID();
                 AddScriptPubKeyMan(id, std::move(spk_manager));
-                AddActiveScriptPubKeyMan(id, t, internal);
+                AddActiveScriptPubKeyManWithDb(batch, id, t, internal);
             }
         }
+
+        // Ensure imported descriptors are committed to disk
+        if (!batch.TxnCommit()) throw std::runtime_error("Error: cannot commit db transaction for descriptors import");
     }
 }