From c447e61957c576463f729e2280a0179e79f47c2a Mon Sep 17 00:00:00 2001
From: mbeisel <beiselmn@gmail.com>
Date: Fri, 12 Jan 2024 15:30:12 +0100
Subject: [PATCH] enable qiskit object export als legacy feature

---
 app/model/circuit_response.py                      | 9 ++++++++-
 app/services/algorithms/knapsack_qaoa_algorithm.py | 1 +
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/app/model/circuit_response.py b/app/model/circuit_response.py
index ed80c26..6335478 100644
--- a/app/model/circuit_response.py
+++ b/app/model/circuit_response.py
@@ -1,3 +1,7 @@
+import codecs
+import pickle
+
+
 from datetime import datetime
 import marshmallow as ma
 from app.model.encoding_request import (
@@ -20,7 +24,10 @@
 
 
 def export_circuit(circuit, input):
-    if (
+    # THIS OPTION MAY LEAD TO INCOMPATIBLE EXPORT WITH DIFFERENT QISKIT VERSIONS AND IS NOT RECOMMENDED
+    if input.circuit_format == "qiskit":
+        codecs.encode(pickle.dumps(circuit), "base64").decode(),
+    elif (
         hasattr(input, "parameterized") and input.parameterized
     ) or input.circuit_format == "openqasm3":
         return qiskit.qasm3.dumps(circuit)
diff --git a/app/services/algorithms/knapsack_qaoa_algorithm.py b/app/services/algorithms/knapsack_qaoa_algorithm.py
index 6268d91..2fa35f2 100644
--- a/app/services/algorithms/knapsack_qaoa_algorithm.py
+++ b/app/services/algorithms/knapsack_qaoa_algorithm.py
@@ -39,4 +39,5 @@ def create_circuit(cls, values, weights, max_weights, p, betas, gammas):
         qaoa = QAOA(reps=p)
         qaoa_qc = qaoa.construct_circuit(angles, operator)[0]
         qaoa_qc = qaoa_qc.decompose(reps=100)
+        qaoa_qc.measure_all()
         return qaoa_qc