Pyband & Bandchain.js: Added get request evm proof on pyband and bandchain.js

CHANGELOG_UNRELEASED.md

@@ -35,8 +35,9 @@
 
 ### Helpers
 
-- (impv) [\#2943](https://github.com/bandprotocol/bandchain/pull/2943) Bandchain.js: Added return `undefined` when account does not exist
+- (feat) [\#2972](https://github.com/bandprotocol/bandchain/pull/2972) pyband&bandchain.js: Added get request evm proof on pyband and bandchain.js
 - (impv) [\#2967](https://github.com/bandprotocol/bandchain/pull/2967) bandchain.js: Added new params to getReferenceData
+- (impv) [\#2943](https://github.com/bandprotocol/bandchain/pull/2943) Bandchain.js: Added return `undefined` when account does not exist
 - (impv) [\#2941](https://github.com/bandprotocol/bandchain/pull/2941) pyband: Added return None when account does not exist
 - (bugs) [\#2935](https://github.com/bandprotocol/bandchain/pull/2935) bandchainjs: Fixed the msg field ordering
 - (impv) [\#2924](https://github.com/bandprotocol/bandchain/pull/2924) pyband: added new type and refactor the dataclass

helpers/bandchain2.js/src/client.ts

@@ -11,6 +11,7 @@ import {
   OracleScript,
   RequestInfo,
   HexBytes,
+  EVMProof
 } from './data'
 import { Address } from './wallet'
 
@@ -488,4 +489,13 @@ export default class Client {
 
     return requestIDs
   }
+
+  async getRequestEVMProofByRequestID(requestID: number): Promise<EVMProof>  {
+    if (!Number.isInteger(requestID)) throw Error('requestID is not an integer')
+    const response = await this.getResult(`/oracle/proof/${requestID}`)
+    return {
+      jsonProof: response.jsonProof,
+      evmProofBytes: Buffer.from(response.evmProofBytes, "hex")
+    }
+  }
 }

helpers/bandchain2.js/src/data.ts

@@ -160,3 +160,9 @@ export interface RequestInfo {
   reports?: Report[]
   result?: Result
 }
+
+
+export interface EVMProof {
+  jsonProof: object
+  evmProofBytes: Buffer
+}

helpers/pyband/pyband/client.py

@@ -17,6 +17,7 @@
     TransactionBlockMode,
     ReferencePrice,
     ReferencePriceUpdated,
+    EVMProof,
 )
 
 
@@ -203,3 +204,7 @@ def get_reference_data(self, pairs: List[str], min_count: int, ask_count: int) -
 
         except:
             raise ValueError("Error quering prices")
+
+    def get_request_evm_proof_by_request_id(self, request_id: int) -> EVMProof:
+        data = self._get_result("/oracle/proof/{}".format(request_id))
+        return EVMProof(json_proof=data["jsonProof"], evm_proof_bytes=HexBytes(bytes.fromhex(data["evmProofBytes"])))

helpers/pyband/pyband/data.py

@@ -191,6 +191,12 @@ class ReferencePrice(object):
     updated_at: ReferencePriceUpdated
 
 
+@dataclass
+class EVMProof(object):
+    json_proof: dict
+    evm_proof_bytes: HexBytes
+
+
 DACITE_CONFIG = Config(
     type_hooks={
         int: int,

helpers/pyband/pyband/transaction.py

@@ -27,6 +27,8 @@ def with_auto(self, client: Client) -> "Transaction":
 
         addr = self.msgs[0].get_sender()
         account = client.get_account(addr)
+        if account == None:
+            raise SystemError("Account doesn't exist.")
         self.account_num = account.account_number
         self.sequence = account.sequence
         return self