Merge pull request #195 from InjectiveLabs/f/add-MsgExecuteContract-support

Add MsgExecuteContract and Example

Author: achilleas-kal

examples/chain_client/40_MsgExecuteContract.py

@@ -0,0 +1,80 @@
+import asyncio
+import logging
+
+from pyinjective.composer import Composer as ProtoMsgComposer
+from pyinjective.async_client import AsyncClient
+from pyinjective.transaction import Transaction
+from pyinjective.constant import Network
+from pyinjective.wallet import PrivateKey
+
+
+async def main() -> None:
+    # select network: local, testnet, mainnet
+    network = Network.testnet()
+    composer = ProtoMsgComposer(network=network.string())
+
+    # initialize grpc client
+    # set custom cookie location (optional) - defaults to current dir
+    client = AsyncClient(network, insecure=False)
+    await client.sync_timeout_height()
+
+    # load account
+    priv_key = PrivateKey.from_hex("f9db9bf330e23cb7839039e944adef6e9df447b90b503d5b4464c90bea9022f3")
+    pub_key = priv_key.to_public_key()
+    address = pub_key.to_address()
+    account = await client.get_account(address.to_acc_bech32())
+
+    # prepare tx msg
+    # NOTE: COIN MUST BE SORTED IN ALPHABETICAL ORDER BY DENOMS
+    funds = [
+        composer.Coin(amount=69, denom='factory/inj1hdvy6tl89llqy3ze8lv6mz5qh66sx9enn0jxg6/inj12ngevx045zpvacus9s6anr258gkwpmthnz80e9'),
+        composer.Coin(amount=420, denom='peggy0x44C21afAaF20c270EBbF5914Cfc3b5022173FEB7'),
+        composer.Coin(amount=1, denom='peggy0x87aB3B4C8661e07D6372361211B96ed4Dc36B1B5'),
+    ]
+    msg = composer.MsgExecuteContract(
+        sender=address.to_acc_bech32(),
+        contract="inj1ady3s7whq30l4fx8sj3x6muv5mx4dfdlcpv8n7",
+        msg='{"increment":{}}',
+        funds=funds
+    )
+
+    # build sim tx
+    tx = (
+        Transaction()
+        .with_messages(msg)
+        .with_sequence(client.get_sequence())
+        .with_account_num(client.get_number())
+        .with_chain_id(network.chain_id)
+    )
+    sim_sign_doc = tx.get_sign_doc(pub_key)
+    sim_sig = priv_key.sign(sim_sign_doc.SerializeToString())
+    sim_tx_raw_bytes = tx.get_tx_data(sim_sig, pub_key)
+
+    # simulate tx
+    (sim_res, success) = await client.simulate_tx(sim_tx_raw_bytes)
+    if not success:
+        print(sim_res)
+        return
+
+    # build tx
+    gas_price = 500000000
+    gas_limit = sim_res.gas_info.gas_used + 20000  # add 20k for gas, fee computation
+    gas_fee = '{:.18f}'.format((gas_price * gas_limit) / pow(10, 18)).rstrip('0')
+    fee = [composer.Coin(
+        amount=gas_price * gas_limit,
+        denom=network.fee_denom,
+    )]
+    tx = tx.with_gas(gas_limit).with_fee(fee).with_memo('').with_timeout_height(client.timeout_height)
+    sign_doc = tx.get_sign_doc(pub_key)
+    sig = priv_key.sign(sign_doc.SerializeToString())
+    tx_raw_bytes = tx.get_tx_data(sig, pub_key)
+
+    # broadcast tx: send_tx_async_mode, send_tx_sync_mode, send_tx_block_mode
+    res = await client.send_tx_sync_mode(tx_raw_bytes)
+    print(res)
+    print("gas wanted: {}".format(gas_limit))
+    print("gas fee: {} INJ".format(gas_fee))
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.INFO)
+    asyncio.get_event_loop().run_until_complete(main())

pyinjective/composer.py

@@ -29,6 +29,8 @@
 
 from pyinjective.proto.cosmos.base.v1beta1 import coin_pb2 as cosmos_dot_base_dot_v1beta1_dot_coin__pb2
 
+from .proto.cosmwasm.wasm.v1 import tx_pb2 as wasm_tx_pb
+
 from .constant import Denom
 from .utils import *
 from typing import List
@@ -262,6 +264,14 @@ def MsgSend(self, from_address: str, to_address: str, amount: float, denom: str)
             amount=[self.Coin(amount=be_amount, denom=peggy_denom)],
         )
 
+    def MsgExecuteContract(self, sender: str, contract: str, msg: str, **kwargs):
+        return wasm_tx_pb.MsgExecuteContract(
+            sender=sender,
+            contract=contract,
+            msg=bytes(msg, "utf-8"),
+            funds=kwargs.get('funds') # funds is a list of cosmos_dot_base_dot_v1beta1_dot_coin__pb2.Coin. The coins in the list must be sorted in alphabetical order by denoms.
+        )
+
     def MsgDeposit(self, sender: str, subaccount_id: str, amount: float, denom: str):
         peggy_denom, decimals = Denom.load_peggy_denom(self.network, denom)
         be_amount = amount_to_backend(amount, decimals)