Add rpc method 'getaddressbalance'

This addresses task 2 in issue 4257
	bisq-network#4257

This new gRPC Wallet service method displays the balance and number
of confimirmations of the most recent transaction for the given BTC
wallet address.

The new method required the usual boilerplate changes to grpc.proto,
CliMain, and GrpcWalletService.

Two unit tests to check error msgs was added to cli/test.sh.

cli/src/main/java/bisq/cli/CliMain.java

@@ -17,6 +17,7 @@
 
 package bisq.cli;
 
+import bisq.proto.grpc.GetAddressBalanceRequest;
 import bisq.proto.grpc.GetBalanceRequest;
 import bisq.proto.grpc.GetFundingAddressesRequest;
 import bisq.proto.grpc.GetVersionGrpc;
@@ -59,6 +60,7 @@ public class CliMain {
     private enum Method {
         getversion,
         getbalance,
+        getaddressbalance,
         getfundingaddresses,
         lockwallet,
         unlockwallet,
@@ -154,6 +156,16 @@ public static void run(String[] args) {
                     out.println(btcBalance);
                     return;
                 }
+                case getaddressbalance: {
+                    if (nonOptionArgs.size() < 2)
+                        throw new IllegalArgumentException("no address specified");
+
+                    var request = GetAddressBalanceRequest.newBuilder()
+                            .setAddress(nonOptionArgs.get(1)).build();
+                    var reply = walletService.getAddressBalance(request);
+                    out.println(reply.getAddressBalanceInfo());
+                    return;
+                }
                 case getfundingaddresses: {
                     var request = GetFundingAddressesRequest.newBuilder().build();
                     var reply = walletService.getFundingAddresses(request);
@@ -230,6 +242,7 @@ private static void printHelp(OptionParser parser, PrintStream stream) {
             stream.format("%-19s%-30s%s%n", "------", "------", "------------");
             stream.format("%-19s%-30s%s%n", "getversion", "", "Get server version");
             stream.format("%-19s%-30s%s%n", "getbalance", "", "Get server wallet balance");
+            stream.format("%-19s%-30s%s%n", "getaddressbalance", "", "Get server wallet address balance");
             stream.format("%-19s%-30s%s%n", "getfundingaddresses", "", "Get BTC funding addresses");
             stream.format("%-19s%-30s%s%n", "lockwallet", "", "Remove wallet password from memory, locking the wallet");
             stream.format("%-19s%-30s%s%n", "unlockwallet", "password timeout",

cli/test.sh

@@ -152,6 +152,20 @@
   [ "$status" -eq 0 ]
 }
 
+@test "test getaddressbalance missing address argument" {
+  run ./bisq-cli --password=xyz getaddressbalance
+  [ "$status" -eq 1 ]
+  echo "actual output:  $output" >&2
+  [ "$output" = "Error: no address specified" ]
+}
+
+@test "test getaddressbalance bogus address argument" {
+  run ./bisq-cli --password=xyz getaddressbalance bogus
+  [ "$status" -eq 1 ]
+  echo "actual output:  $output" >&2
+  [ "$output" = "Error: address bogus not found in wallet" ]
+}
+
 @test "test help displayed on stderr if no options or arguments" {
   run ./bisq-cli
   [ "$status" -eq 1 ]

core/src/main/java/bisq/core/grpc/CoreWalletsService.java

@@ -80,6 +80,15 @@ public long getAddressBalance(String addressString) {
         return btcWalletService.getBalanceForAddress(address).value;
     }
 
+    public String getAddressBalanceInfo(String addressString) {
+        var satoshiBalance = getAddressBalance(addressString);
+        var btcBalance = formatSatoshis.apply(satoshiBalance);
+        var numConfirmations = getNumConfirmationsForMostRecentTransaction(addressString);
+        return addressString
+                + "  balance: " + format("%13s", btcBalance)
+                + ((numConfirmations > 0) ? ("  confirmations: " + format("%6d", numConfirmations)) : "");
+    }
+
     public String getFundingAddresses() {
         if (!walletsManager.areWalletsAvailable())
             throw new IllegalStateException("wallet is not yet available");

core/src/main/java/bisq/core/grpc/GrpcWalletService.java

@@ -1,5 +1,7 @@
 package bisq.core.grpc;
 
+import bisq.proto.grpc.GetAddressBalanceReply;
+import bisq.proto.grpc.GetAddressBalanceRequest;
 import bisq.proto.grpc.GetBalanceReply;
 import bisq.proto.grpc.GetBalanceRequest;
 import bisq.proto.grpc.GetFundingAddressesReply;
@@ -42,7 +44,22 @@ public void getBalance(GetBalanceRequest req, StreamObserver<GetBalanceReply> re
             throw ex;
         }
     }
-
+
+    @Override
+    public void getAddressBalance(GetAddressBalanceRequest req,
+                                  StreamObserver<GetAddressBalanceReply> responseObserver) {
+        try {
+            String result = walletsService.getAddressBalanceInfo(req.getAddress());
+            var reply = GetAddressBalanceReply.newBuilder().setAddressBalanceInfo(result).build();
+            responseObserver.onNext(reply);
+            responseObserver.onCompleted();
+        } catch (IllegalStateException cause) {
+            var ex = new StatusRuntimeException(Status.UNKNOWN.withDescription(cause.getMessage()));
+            responseObserver.onError(ex);
+            throw ex;
+        }
+    }
+
     @Override
     public void getFundingAddresses(GetFundingAddressesRequest req,
                                     StreamObserver<GetFundingAddressesReply> responseObserver) {

proto/src/main/proto/grpc.proto

@@ -119,6 +119,8 @@ message PlaceOfferReply {
 service Wallet {
     rpc GetBalance (GetBalanceRequest) returns (GetBalanceReply) {
     }
+    rpc GetAddressBalance (GetAddressBalanceRequest) returns (GetAddressBalanceReply) {
+    }
     rpc GetFundingAddresses (GetFundingAddressesRequest) returns (GetFundingAddressesReply) {
     }
     rpc SetWalletPassword (SetWalletPasswordRequest) returns (SetWalletPasswordReply) {
@@ -138,6 +140,14 @@ message GetBalanceReply {
     uint64 balance = 1;
 }
 
+message GetAddressBalanceRequest {
+    string address = 1;
+}
+
+message GetAddressBalanceReply {
+    string addressBalanceInfo = 1;
+}
+
 message GetFundingAddressesRequest {
 }