From: ThomasV <thomasv1@gmx.de>
Date: Sat, 1 Mar 2014 18:22:11 +0000 (+0100)
Subject: add memory pool results to getaddressbalance
X-Git-Url: https://git.novaco.in/?p=electrum-server.git;a=commitdiff_plain;h=b9d74456c47ed3a54c73185d449ff7f23cb6edf4

add memory pool results to getaddressbalance
---

diff --git a/backends/bitcoind/blockchain_processor.py b/backends/bitcoind/blockchain_processor.py
index 94cfbfa..a1f3822 100644
--- a/backends/bitcoind/blockchain_processor.py
+++ b/backends/bitcoind/blockchain_processor.py
@@ -38,6 +38,7 @@ class BlockchainProcessor(Processor):
         self.headers_data = ''
         self.headers_path = config.get('leveldb', 'path_fulltree')
 
+        self.mempool_values = {}
         self.mempool_addresses = {}
         self.mempool_hist = {}
         self.mempool_hashes = set([])
@@ -265,7 +266,7 @@ class BlockchainProcessor(Processor):
 
         # add memory pool
         with self.mempool_lock:
-            for txid in self.mempool_hist.get(addr, []):
+            for txid, delta in self.mempool_hist.get(addr, []):
                 hist.append({'tx_hash':txid, 'height':0})
 
         # add something to distinguish between unused and empty addresses
@@ -277,6 +278,14 @@ class BlockchainProcessor(Processor):
         return hist
 
 
+    def get_unconfirmed_value(self, addr):
+        v = 0
+        with self.mempool_lock:
+            for txid, delta in self.mempool_hist.get(addr, []):
+                v += delta
+        return v
+
+
     def get_status(self, addr, cache_only=False):
         tx_points = self.get_history(addr, cache_only)
         if cache_only and tx_points == -1:
@@ -485,10 +494,20 @@ class BlockchainProcessor(Processor):
                 error = str(e) + ': ' + address
                 print_log("error:", error)
 
+        elif method == 'blockchain.address.get_mempool':
+            try:
+                address = str(params[0])
+                result = self.get_unconfirmed_history(address, cache_only)
+            except BaseException, e:
+                error = str(e) + ': ' + address
+                print_log("error:", error)
+
         elif method == 'blockchain.address.get_balance':
             try:
                 address = str(params[0])
-                result = self.storage.get_balance(address)
+                confirmed = self.storage.get_balance(address)
+                unconfirmed = self.get_unconfirmed_value(address)
+                result = { 'confirmed':confirmed, 'unconfirmed':unconfirmed }
             except BaseException, e:
                 error = str(e) + ': ' + address
                 print_log("error:", error)
@@ -687,6 +706,8 @@ class BlockchainProcessor(Processor):
         mempool_hashes = set(self.bitcoind('getrawmempool'))
         touched_addresses = set([])
 
+        # get new transactions
+        new_tx = {}
         for tx_hash in mempool_hashes:
             if tx_hash in self.mempool_hashes:
                 continue
@@ -695,40 +716,70 @@ class BlockchainProcessor(Processor):
             if not tx:
                 continue
 
-            mpa = self.mempool_addresses.get(tx_hash, [])
+            new_tx[tx_hash] = tx
+            self.mempool_hashes.add(tx_hash)
+
+        # remove older entries from mempool_hashes
+        self.mempool_hashes = mempool_hashes
+
+
+        # check all tx outputs
+        for tx_hash, tx in new_tx.items():
+            mpa = self.mempool_addresses.get(tx_hash, {})
+            out_values = []
+            for x in tx.get('outputs'):
+                out_values.append( x['value'] )
+
+                addr = x.get('address')
+                if not addr:
+                    continue
+                v = mpa.get(addr,0)
+                v += x['value']
+                mpa[addr] = v
+                touched_addresses.add(addr)
+
+            self.mempool_addresses[tx_hash] = mpa
+            self.mempool_values[tx_hash] = out_values
+
+        # check all inputs
+        for tx_hash, tx in new_tx.items():
+            mpa = self.mempool_addresses.get(tx_hash, {})
             for x in tx.get('inputs'):
                 # we assume that the input address can be parsed by deserialize(); this is true for Electrum transactions
                 addr = x.get('address')
-                if addr and addr not in mpa:
-                    mpa.append(addr)
-                    touched_addresses.add(addr)
+                if not addr:
+                    continue
 
-            for x in tx.get('outputs'):
-                addr = x.get('address')
-                if addr and addr not in mpa:
-                    mpa.append(addr)
-                    touched_addresses.add(addr)
+                v = self.mempool_values.get(x.get('prevout_hash'))
+                if v:
+                    value = v[ x.get('prevout_n')]
+                else:
+                    txi = (x.get('prevout_hash') + int_to_hex(x.get('prevout_n'), 4)).decode('hex')
+                    value = self.storage.get_utxo_value(addr,txi)
+
+                v = mpa.get(addr,0)
+                v -= value
+                mpa[addr] = v
+                touched_addresses.add(addr)
 
             self.mempool_addresses[tx_hash] = mpa
-            self.mempool_hashes.add(tx_hash)
 
-        # remove older entries from mempool_hashes
-        self.mempool_hashes = mempool_hashes
 
         # remove deprecated entries from mempool_addresses
         for tx_hash, addresses in self.mempool_addresses.items():
             if tx_hash not in self.mempool_hashes:
                 self.mempool_addresses.pop(tx_hash)
+                self.mempool_values.pop(tx_hash)
                 for addr in addresses:
                     touched_addresses.add(addr)
 
         # rebuild mempool histories
         new_mempool_hist = {}
         for tx_hash, addresses in self.mempool_addresses.items():
-            for addr in addresses:
+            for addr, delta in addresses.items():
                 h = new_mempool_hist.get(addr, [])
                 if tx_hash not in h:
-                    h.append(tx_hash)
+                    h.append((tx_hash, delta))
                 new_mempool_hist[addr] = h
 
         with self.mempool_lock:
diff --git a/backends/bitcoind/storage.py b/backends/bitcoind/storage.py
index 7658b49..cca9645 100644
--- a/backends/bitcoind/storage.py
+++ b/backends/bitcoind/storage.py
@@ -507,6 +507,13 @@ class Storage(object):
         self.db_addr.delete(txo)
 
 
+    def get_utxo_value(self, addr, txi):
+        key = self.address_to_key(addr)
+        leaf = key + txi
+        s = self.db_utxo.get(leaf)
+        value = hex_to_int(s[0:8])
+        return value
+
 
     def set_spent(self, addr, txi, txid, index, height, undo):
         key = self.address_to_key(addr)