initial commit

mint/app.py

@@ -0,0 +1,65 @@
+import hashlib
+
+from ecc.curve import secp256k1, Point
+from flask import Flask, request
+import os
+import asyncio
+
+from mint.ledger import Ledger
+from mint.migrations import m001_initial
+
+# Ledger pubkey
+ledger = Ledger("supersecretprivatekey", "../data/mint")
+
+
+class MyFlaskApp(Flask):
+    """
+    We overload the Flask class so we can run a startup script (migration).
+    Stupid Flask.
+    """
+
+    def __init__(self, *args, **kwargs):
+        async def create_tasks_func():
+            await asyncio.wait([m001_initial(ledger.db)])
+
+        loop = asyncio.get_event_loop()
+        loop.run_until_complete(create_tasks_func())
+        loop.close()
+
+        return super().__init__(*args, **kwargs)
+
+    def run(self, *args, **options):
+        super(MyFlaskApp, self).run(*args, **options)
+
+
+app = MyFlaskApp(__name__)
+
+
+@app.route("/keys")
+def keys():
+    return ledger.get_pubkeys()
+
+
+@app.route("/mint", methods=["POST"])
+async def mint():
+    amount = int(request.args.get("amount")) or 64
+    x = int(request.json["x"])
+    y = int(request.json["y"])
+    B_ = Point(x, y, secp256k1)
+    try:
+        promise = await ledger.mint(B_, amount)
+        return promise
+    except Exception as exc:
+        return {"error": str(exc)}
+
+
+@app.route("/split", methods=["POST"])
+async def split():
+    proofs = request.json["proofs"]
+    amount = request.json["amount"]
+    output_data = request.json["output_data"]
+    try:
+        fst_promises, snd_promises = await ledger.split(proofs, amount, output_data)
+        return {"fst": fst_promises, "snd": snd_promises}
+    except Exception as exc:
+        return {"error": str(exc)}