Expand token symbol and decimals in tx listings

apps/cic-eth/cic_eth/ext/tx.py

@@ -14,9 +14,11 @@ from chainlib.eth.tx import (
         )
 from chainlib.eth.block import block_by_number
 from chainlib.eth.contract import abi_decode_single
+from chainlib.eth.constant import ZERO_ADDRESS
 from hexathon import strip_0x
 from cic_eth_registry import CICRegistry
 from cic_eth_registry.erc20 import ERC20Token
+from cic_eth_registry.error import UnknownContractError
 from chainqueue.db.models.otx import Otx
 from chainqueue.db.enum import StatusEnum
 from chainqueue.sql.query import get_tx_cache
@@ -114,9 +116,6 @@ def list_tx_by_bloom(self, bloomspec, address, chain_spec_dict):
 
                         # TODO: pass through registry to validate declarator entry of token
                         #token = registry.by_address(tx['to'], sender_address=self.call_address)
-                        token = ERC20Token(chain_spec, rpc, tx['to'])
-                        token_symbol = token.symbol
-                        token_decimals = token.decimals
                         times = tx_times(tx['hash'], chain_spec)
                         tx_r = {
                             'hash': tx['hash'],
@@ -126,12 +125,6 @@ def list_tx_by_bloom(self, bloomspec, address, chain_spec_dict):
                             'destination_value': tx_token_value,
                             'source_token': tx['to'],
                             'destination_token': tx['to'],
-                            'source_token_symbol': token_symbol,
-                            'destination_token_symbol': token_symbol,
-                            'source_token_decimals': token_decimals,
-                            'destination_token_decimals': token_decimals,
-                            'source_token_chain': chain_str,
-                            'destination_token_chain': chain_str,
                             'nonce': tx['nonce'],
                                 }
                         if times['queue'] != None:
@@ -146,8 +139,8 @@ def list_tx_by_bloom(self, bloomspec, address, chain_spec_dict):
 # TODO: Surely it must be possible to optimize this
 # TODO: DRY this with callback filter in cic_eth/runnable/manager
 # TODO: Remove redundant fields from end representation (timestamp, tx_hash)
-@celery_app.task()
+@celery_app.task(bind=True, base=BaseTask)
-def tx_collate(tx_batches, chain_spec_dict, offset, limit, newest_first=True):
+def tx_collate(self, tx_batches, chain_spec_dict, offset, limit, newest_first=True, verify_contracts=True):
     """Merges transaction data from multiple sources and sorts them in chronological order.
 
     :param tx_batches: Transaction data inputs
@@ -196,6 +189,32 @@ def tx_collate(tx_batches, chain_spec_dict, offset, limit, newest_first=True):
     if newest_first:
         ks.reverse()
     for k in ks:
-        txs.append(txs_by_block[k])
+        tx = txs_by_block[k]
+        if verify_contracts:
+            try:
+                tx = verify_and_expand(tx, chain_spec, sender_address=BaseTask.call_address)
+            except UnknownContractError:
+                logg.error('verify failed on tx {}, skipping'.format(tx['hash']))
+                continue
+        txs.append(tx)
 
     return txs
+
+
+def verify_and_expand(tx, chain_spec, sender_address=ZERO_ADDRESS):
+    rpc = RPCConnection.connect(chain_spec, 'default')
+    registry = CICRegistry(chain_spec, rpc)
+
+    if tx.get('source_token_symbol') == None and tx['source_token'] != ZERO_ADDRESS:
+        r = registry.by_address(tx['source_token'], sender_address=sender_address)
+        token = ERC20Token(chain_spec, rpc, tx['source_token'])
+        tx['source_token_symbol'] = token.symbol
+        tx['source_token_decimals'] = token.decimals
+
+    if tx.get('destination_token_symbol') == None and tx['destination_token'] != ZERO_ADDRESS:
+        r = registry.by_address(tx['destination_token'], sender_address=sender_address)
+        token = ERC20Token(chain_spec, rpc, tx['destination_token'])
+        tx['destination_token_symbol'] = token.symbol
+        tx['destination_token_decimals'] = token.decimals
+
+    return tx

apps/cic-eth/cic_eth/version.py

@@ -9,8 +9,8 @@ import semver
 version = (
         0,
         12,
-        0,
+        1,
-        'alpha.3',
+        'alpha.2',
         )
 
 version_object = semver.VersionInfo(

apps/cic-eth/tests/task/test_task_list.py

@@ -0,0 +1,92 @@
+# external imports
+import celery
+import pytest
+from chainlib.connection import RPCConnection
+from chainlib.eth.constant import ZERO_ADDRESS
+from chainlib.eth.gas import (
+        RPCGasOracle,
+        )
+from chainlib.eth.tx import (
+        TxFormat,
+        unpack,
+        )
+from chainlib.eth.nonce import RPCNonceOracle
+from eth_erc20 import ERC20
+from hexathon import (
+        add_0x,
+        strip_0x,
+        )
+from chainqueue.db.models.tx import TxCache
+from chainqueue.db.models.otx import Otx
+
+
+def test_ext_tx_collate(
+        default_chain_spec,
+        init_database,
+        eth_rpc,
+        eth_signer,
+        custodial_roles,
+        agent_roles,
+        foo_token,
+        bar_token,
+        register_tokens,
+        cic_registry,
+        register_lookups,
+        init_celery_tasks,
+        celery_session_worker,
+        ):
+
+    rpc = RPCConnection.connect(default_chain_spec, 'default')
+    nonce_oracle = RPCNonceOracle(custodial_roles['FOO_TOKEN_GIFTER'], eth_rpc)
+    gas_oracle = RPCGasOracle(eth_rpc)
+
+    c = ERC20(default_chain_spec, signer=eth_signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
+    transfer_value_foo = 1000
+    transfer_value_bar = 1024
+    (tx_hash_hex, tx_signed_raw_hex) = c.transfer(foo_token, custodial_roles['FOO_TOKEN_GIFTER'], agent_roles['ALICE'], transfer_value_foo, tx_format=TxFormat.RLP_SIGNED)
+    tx = unpack(bytes.fromhex(strip_0x(tx_signed_raw_hex)), default_chain_spec)
+
+    otx = Otx(
+        tx['nonce'],
+        tx_hash_hex,
+        tx_signed_raw_hex,
+        )
+    init_database.add(otx)
+    init_database.commit()
+
+    txc = TxCache(
+        tx_hash_hex,
+        tx['from'],
+        tx['to'],
+        foo_token,
+        bar_token,
+        transfer_value_foo,
+        transfer_value_bar,
+        666,
+        13,
+        session=init_database,
+            )
+    init_database.add(txc)
+    init_database.commit()
+    
+    s = celery.signature(
+            'cic_eth.ext.tx.tx_collate',
+            [
+                {tx_hash_hex: tx_signed_raw_hex},
+                default_chain_spec.asdict(),
+                0,
+                100,
+                ],
+            queue=None,
+            )
+    t = s.apply_async()
+    r = t.get_leaf()
+    assert t.successful()
+
+    assert len(r) == 1
+
+    tx = r[0]
+    assert tx['source_token_symbol'] == 'FOO'
+    assert tx['source_token_decimals'] == 6
+    assert tx['destination_token_symbol'] == 'BAR'
+    assert tx['destination_token_decimals'] == 9