add MsgBid example

Author: achilleas-kal

examples/chain_client_examples/19_MsgBid.py

@@ -0,0 +1,83 @@
+# Copyright 2021 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.
+"""Injective Chain Tx/Query client for Python. Example only."""
+
+import asyncio
+import logging
+
+from pyinjective.composer import Composer as ProtoMsgComposer
+from pyinjective.client import Client
+from pyinjective.transaction import Transaction
+from pyinjective.constant import Network
+from pyinjective.wallet import PrivateKey, PublicKey, Address
+
+async def main() -> None:
+    # select network: local, testnet, mainnet
+    network = Network.testnet()
+    composer = ProtoMsgComposer(network=network.string())
+
+    # initialize grpc client
+    client = Client(network, insecure=True)
+
+    # load account
+    priv_key = PrivateKey.from_hex("5d386fbdbf11f1141010f81a46b40f94887367562bd33b452bbaa6ce1cd1381e")
+    pub_key = priv_key.to_public_key()
+    address = pub_key.to_address().init_num_seq(network.lcd_endpoint)
+
+    # prepare tx msg
+    msg = composer.MsgBid(
+        sender=address.to_acc_bech32(),
+        round=17,
+        bid_amount=1000
+    )
+
+    # 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) = 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 + 15000  # add 15k for gas, fee computation
+    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(0)
+    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 = client.send_tx_block_mode(tx_raw_bytes)
+
+    # print tx response
+    print(res)
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.INFO)
+    asyncio.get_event_loop().run_until_complete(main())