Merge pull request #120 from InjectiveLabs/f/add_msgexternaltransfer

feat: add MsgExternalTransfer

Author: achilleas-kal

README.md

@@ -78,6 +78,9 @@ Note that the [sync client](https://github.com/InjectiveLabs/sdk-python/blob/mas
 
 
 ### Changelogs
+**0.5.6.9**
+* Add MsgExternalTransfer to the composer
+
 **0.5.6.8**
 * Add skip & limit params to Exchange API methods
 * Add more methods in ExplorerRPC

examples/chain_client/30_ExternalTransfer.py

@@ -0,0 +1,89 @@
+# Copyright 2022 Injective Labs
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+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
+    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 = await pub_key.to_address().async_init_num_seq(network.lcd_endpoint)
+    subaccount_id = address.get_subaccount_id(index=0)
+    dest_subaccount_id = "0xaf79152ac5df276d9a8e1e2e22822f9713474902000000000000000000000000"
+
+    # prepare tx msg
+    msg = composer.MsgExternalTransfer(
+        sender=address.to_acc_bech32(),
+        source_subaccount_id=subaccount_id,
+        destination_subaccount_id=dest_subaccount_id,
+        amount=100,
+        denom="inj"
+    )
+
+    # build sim tx
+    tx = (
+        Transaction()
+        .with_messages(msg)
+        .with_sequence(address.get_sequence())
+        .with_account_num(address.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

@@ -375,6 +375,22 @@ def MsgWithdraw(self, sender: str, subaccount_id: str, amount: float, denom: str
             amount=self.Coin(amount=be_amount, denom=peggy_denom),
         )
 
+    def MsgExternalTransfer(
+        self,
+        sender: str,
+        source_subaccount_id: str,
+        destination_subaccount_id: str,
+        amount: int,
+        denom: str,
+    ):
+
+        return injective_exchange_tx_pb.MsgExternalTransfer(
+            sender=sender,
+            source_subaccount_id=source_subaccount_id,
+            destination_subaccount_id=destination_subaccount_id,
+            amount=self.Coin(amount=amount, denom=denom),
+        )
+
     def MsgBid(self, sender: str, bid_amount: float, round: float):
 
         be_amount = amount_to_backend(bid_amount, 18)