Add retrieval of transaction from daemon

monero/backends/jsonrpc.py

@@ -71,6 +71,22 @@ class JSONRPCDaemon(object):
             return res['headers']
         raise exceptions.BackendException(res['status'])
 
+    def transactions(self, hashes):
+        res = self.raw_request('/get_transactions', {
+                'txs_hashes': hashes,
+                'decode_as_json': True})
+        if res['status'] != 'OK':
+            raise exceptions.BackendException(res['status'])
+        txs = []
+        for tx in res.get('txs', []):
+            txs.append(Transaction(
+                hash=tx['tx_hash'],
+                height=None if tx['in_pool'] else tx['block_height'],
+                timestamp=datetime.fromtimestamp(tx['block_timestamp']) if 'block_timestamp' in tx else None,
+                blob=tx['as_hex'],
+                json=json.loads(tx['as_json'])))
+        return txs
+
     def raw_request(self, path, data):
         hdr = {'Content-Type': 'application/json'}
         _log.debug(u"Request: {path}\nData: {data}".format(

monero/daemon.py

@@ -1,3 +1,5 @@
+import six
+
 class Daemon(object):
     """Monero daemon.
 
@@ -51,3 +53,13 @@ class Daemon(object):
         :rtype: list of dict
         """
         return self._backend.headers(start_height, end_height)
+
+    def transactions(self, hashes):
+        """
+        Returns transactions matching given hashes. Accepts single hash or a sequence.
+
+        :hashes: str or list of str
+        """
+        if isinstance(hashes, six.string_types):
+            hashes = [hashes]
+        return self._backend.transactions(hashes)

monero/transaction.py

@@ -72,8 +72,13 @@ class Transaction(object):
     timestamp = None
     key = None
     blob = None
+    json = None
     confirmations = None
 
+    @property
+    def size(self):
+        return len(self.blob)//2
+
     def __init__(self, **kwargs):
         self.hash = kwargs.get('hash', self.hash)
         self.fee = kwargs.get('fee', self.fee)
@@ -81,6 +86,7 @@ class Transaction(object):
         self.timestamp = kwargs.get('timestamp', self.timestamp)
         self.key = kwargs.get('key', self.key)
         self.blob = kwargs.get('blob', self.blob)
+        self.json = kwargs.get('json', self.json)
         self.confirmations = kwargs.get('confirmations', self.confirmations)
 
     def __repr__(self):