synchronous_get batch method for interface

lib/interface.py

@@ -110,7 +110,7 @@ class InterfaceAncestor(threading.Thread):
                 result = params[1]
                 params = [addr]
 
-        self.responses.put({'method':method, 'params':params, 'result':result})
+        self.responses.put({'method':method, 'params':params, 'result':result, 'id':msg_id})
 
 
 
@@ -286,21 +286,22 @@ class TcpStratumInterface(InterfaceAncestor):
         self.poke()
 
     def send(self, messages):
+        """return the ids of the requests that we sent"""
         out = ''
+        ids = []
         for m in messages:
             method, params = m 
             request = json.dumps( { 'id':self.message_id, 'method':method, 'params':params } )
             self.unanswered_requests[self.message_id] = method, params
-
+            ids.append(self.message_id)
             # uncomment to debug
             # print "-->",request
-
             self.message_id += 1
             out += request + '\n'
-
         while out:
             sent = self.s.send( out )
             out = out[sent:]
+        return ids
 
     def get_history(self, addr):
         self.send([('blockchain.address.get_history', [addr])])
@@ -340,9 +341,9 @@ class Interface(TcpStratumInterface, HttpStratumInterface):
 
     def send(self, messages):
         if self.protocol in 'st':
-            TcpStratumInterface.send(self, messages)
+            return TcpStratumInterface.send(self, messages)
         else:
-            HttpStratumInterface.send(self, messages)
+            return HttpStratumInterface.send(self, messages)
 
 
     def parse_proxy_options(self, s):
@@ -378,10 +379,26 @@ class Interface(TcpStratumInterface, HttpStratumInterface):
             self.is_connected = False  # this exits the polling loop
             self.poke()
 
+
     def is_up_to_date(self):
         return self.responses.empty() and not self.unanswered_requests
 
 
+    def synchronous_get(self, requests, timeout=100000000):
+        # todo: use generators, unanswered_requests should be a list of arrays...
+        ids = self.send(requests)
+        id2 = ids[:]
+        res = {}
+        while ids:
+            r = self.responses.get(True, timeout)
+            _id = r.get('id')
+            if _id in ids:
+                ids.remove(_id)
+                res[_id] = r.get('result')
+        out = []
+        for _id in id2:
+            out.append(res[_id])
+        return out
 
 
 

scripts/get_history

@@ -11,18 +11,7 @@ except:
 
 i = Interface({'server':'electrum.novit.ro:50001:t'})
 i.start()
-i.send([('blockchain.address.get_history',[addr])])
+h = i.synchronous_get([ ('blockchain.address.get_history',[addr]) ])[0]
+for item in h:
+    print item['tx_hash'], item['value']
 
-while True:
-    try:
-        r = i.responses.get(True, 100000000000)
-    except KeyboardInterrupt:
-        break
-    method = r.get('method') 
-    if method == 'blockchain.address.get_history':
-        confirmed = unconfirmed = 0
-        h = r.get('result')
-        for item in h:
-            print item['tx_hash'], item['value']
-
-        break

scripts/validate_tx

@@ -21,29 +21,6 @@ i = Interface({'server':'ecdsa.org:50002:s'})
 i.start()
 
 
-def get_header(i, block_height):
-    i.send([('blockchain.block.get_header',[block_height])])
-    while True:
-        r = i.responses.get(True, 100000000000)
-        method = r.get('method') 
-        if method == 'blockchain.block.get_header':
-            break
-    return r.get('result')
-
-
-
-def get_merkle(i, tx_hash):
-
-    i.send([('blockchain.transaction.get_merkle',[tx_hash])])
-    while True:
-        r = i.responses.get(True, 100000000000)
-        method = r.get('method') 
-        if method == 'blockchain.transaction.get_merkle':
-            break
-
-    return r.get('result')
-
-
 def merkle_root(merkle):
 
     merkle = map (lambda tx_hash: tx_hash.decode('hex')[::-1], merkle)
@@ -70,16 +47,23 @@ def hash_header(res):
 
 
 def verify_tx(tx_hash):
-    res = get_merkle(i, tx_hash)
+    
+    res = i.synchronous_get([ ('blockchain.transaction.get_merkle',[tx_hash]) ])[0]
     assert tx_hash in res.get('merkle')
     assert res.get('merkle_root') == merkle_root(res['merkle'])
     block_height = res.get('block_height')
-    _hash = None
+    print block_height
+
+    headers_requests = []
     for height in range(block_height-10,block_height+10):
-        header = get_header(i, height)
+        headers_requests.append( ('blockchain.block.get_header',[height]) )
+    res = i.synchronous_get(headers_requests)
+
+    _hash = None
+    for header in res:
         if _hash: assert _hash == header.get('prev_block_hash')
         _hash = hash_header(header)
-        #print _hash
+        print _hash
         if height==block_height:
             assert header.get('merkle_root') == res.get('merkle_root')