Use nostr as cache system

.env-sample

@@ -175,3 +175,6 @@ SLASHED_BOND_REWARD_SPLIT = 0.5
 
 # Username for HTLCs escrows
 ESCROW_USERNAME = 'admin'
+
+#Social
+NOSTR_NSEC = 'nsec1vxhs2zc4kqe0dhz4z2gfrdyjsrwf8pg3neeqx6w4nl8djfzdp0dqwd6rxh'

api/logics.py

@@ -8,7 +8,7 @@
 
 from api.lightning.node import LNNode
 from api.models import Currency, LNPayment, MarketTick, OnchainPayment, Order
-from api.tasks import send_devfund_donation, send_notification
+from api.tasks import send_devfund_donation, send_notification, nostr_send_order_event
 from api.utils import get_minning_fee, validate_onchain_address, location_country
 from chat.models import Message
 
@@ -704,19 +704,19 @@ def payout_amount(cls, order, user):
 
         if context["invoice_amount"] < MIN_SWAP_AMOUNT:
             context["swap_allowed"] = False
-            context[
-                "swap_failure_reason"
-            ] = f"Order amount is smaller than the minimum swap available of {MIN_SWAP_AMOUNT} Sats"
+            context["swap_failure_reason"] = (
+                f"Order amount is smaller than the minimum swap available of {MIN_SWAP_AMOUNT} Sats"
+            )
             order.log(
                 f"Onchain payment option was not offered: amount is smaller than the minimum swap available of {MIN_SWAP_AMOUNT} Sats",
                 level="WARN",
             )
             return True, context
         elif context["invoice_amount"] > MAX_SWAP_AMOUNT:
             context["swap_allowed"] = False
-            context[
-                "swap_failure_reason"
-            ] = f"Order amount is bigger than the maximum swap available of {MAX_SWAP_AMOUNT} Sats"
+            context["swap_failure_reason"] = (
+                f"Order amount is bigger than the maximum swap available of {MAX_SWAP_AMOUNT} Sats"
+            )
             order.log(
                 f"Onchain payment option was not offered: amount is bigger than the maximum swap available of {MAX_SWAP_AMOUNT} Sats",
                 level="WARN",
@@ -741,9 +741,9 @@ def payout_amount(cls, order, user):
             )
             if not valid:
                 context["swap_allowed"] = False
-                context[
-                    "swap_failure_reason"
-                ] = "Not enough onchain liquidity available to offer a swap"
+                context["swap_failure_reason"] = (
+                    "Not enough onchain liquidity available to offer a swap"
+                )
                 order.log(
                     "Onchain payment option was not offered: onchain liquidity available to offer a swap",
                     level="WARN",
@@ -1019,6 +1019,8 @@ def cancel_order(cls, order, user, state=None):
             order.log("Order expired while waiting for maker bond")
             order.log("Maker bond was cancelled")
 
+            nostr_send_order_event.delay(order_id=order.id)
+
             return True, None
 
         # 2.a) When maker cancels after bond
@@ -1039,6 +1041,8 @@ def cancel_order(cls, order, user, state=None):
                 order.log("Order cancelled by maker while public or paused")
                 order.log("Maker bond was <b>unlocked</b>")
 
+                nostr_send_order_event.delay(order_id=order.id)
+
                 return True, None
 
         # 2.b) When maker cancels after bond and before taker bond is locked
@@ -1058,6 +1062,8 @@ def cancel_order(cls, order, user, state=None):
                 order.log("Maker bond was <b>unlocked</b>")
                 order.log("Taker bond was <b>cancelled</b>")
 
+                nostr_send_order_event.delay(order_id=order.id)
+
                 return True, None
 
         # 3) When taker cancels before bond
@@ -1070,6 +1076,8 @@ def cancel_order(cls, order, user, state=None):
 
             order.log("Taker cancelled before locking the bond")
 
+            nostr_send_order_event.delay(order_id=order.id)
+
             return True, None
 
         # 4) When taker or maker cancel after bond (before escrow)
@@ -1099,6 +1107,8 @@ def cancel_order(cls, order, user, state=None):
                 order.log("Maker bond was <b>settled</b>")
                 order.log("Taker bond was <b>unlocked</b>")
 
+                nostr_send_order_event.delay(order_id=order.id)
+
                 return True, None
 
         # 4.b) When taker cancel after bond (before escrow)
@@ -1121,6 +1131,8 @@ def cancel_order(cls, order, user, state=None):
                 order.log("Taker bond was <b>settled</b>")
                 order.log("Maker bond was <b>unlocked</b>")
 
+                nostr_send_order_event.delay(order_id=order.id)
+
                 return True, None
 
         # 5) When trade collateral has been posted (after escrow)
@@ -1136,6 +1148,9 @@ def cancel_order(cls, order, user, state=None):
                 order.log(
                     f"Taker Robot({user.robot.id},{user.username}) accepted the collaborative cancellation"
                 )
+
+                nostr_send_order_event.delay(order_id=order.id)
+
                 return True, None
 
             # if the taker had asked, and now the maker does: cancel order, return everything
@@ -1144,6 +1159,9 @@ def cancel_order(cls, order, user, state=None):
                 order.log(
                     f"Maker Robot({user.robot.id},{user.username}) accepted the collaborative cancellation"
                 )
+
+                nostr_send_order_event.delay(order_id=order.id)
+
                 return True, None
 
             # Otherwise just make true the asked for cancel flags
@@ -1181,6 +1199,8 @@ def collaborative_cancel(cls, order):
         order.update_status(Order.Status.CCA)
         send_notification.delay(order_id=order.id, message="collaborative_cancelled")
 
+        nostr_send_order_event.delay(order_id=order.id)
+
         order.log("Order was collaboratively cancelled")
         order.log("Maker bond was <b>unlocked</b>")
         order.log("Taker bond was <b>unlocked</b>")
@@ -1208,6 +1228,8 @@ def publish_order(cls, order):
 
         order.save()  # update all fields
 
+        nostr_send_order_event.delay(order_id=order.id)
+
         order.log(f"Order({order.id},{str(order)}) is public in the order book")
         return
 
@@ -1350,6 +1372,9 @@ def finalize_contract(cls, order):
         except Exception:
             pass
         send_notification.delay(order_id=order.id, message="order_taken_confirmed")
+
+        nostr_send_order_event.delay(order_id=order.id)
+
         order.log(
             f"<b>Contract formalized.</b> Maker: Robot({order.maker.robot.id},{order.maker}). Taker: Robot({order.taker.robot.id},{order.taker}). API median price {order.currency.exchange_rate} {dict(Currency.currency_choices)[order.currency.currency]}/BTC. Premium is {order.premium}%. Contract size {order.last_satoshis} Sats"
         )
@@ -1741,11 +1766,15 @@ def pause_unpause_public_order(order, user):
                 order.log(
                     f"Robot({user.robot.id},{user.username}) paused the public order"
                 )
+
+                nostr_send_order_event.delay(order_id=order.id)
             elif order.status == Order.Status.PAU:
                 order.update_status(Order.Status.PUB)
                 order.log(
                     f"Robot({user.robot.id},{user.username}) made public the paused order"
                 )
+
+                nostr_send_order_event.delay(order_id=order.id)
             else:
                 order.log(
                     f"Robot({user.robot.id},{user.username}) tried to pause/unpause an order that was not public or paused",

api/nostr.py

@@ -0,0 +1,98 @@
+import pygeohash
+import hashlib
+import uuid
+
+from asgiref.sync import sync_to_async
+from nostr_sdk import Keys, Client, EventBuilder, NostrSigner, Kind, Tag
+from api.models import Order
+from decouple import config
+
+
+class Nostr:
+    """Simple nostr events manager to be used as a cache system for clients"""
+
+    async def send_order_event(self, order):
+        """Creates the event and sends it to the coordinator relay"""
+
+        if config("NOSTR_NSEC", cast=str, default="") == "":
+            return
+
+        print("Sending nostr event")
+
+        # Initialize with coordinator Keys
+        keys = Keys.parse(config("NOSTR_NSEC", cast=str))
+        signer = NostrSigner.keys(keys)
+        client = Client(signer)
+
+        # Add relays and connect
+        await client.add_relays(["ws://localhost:7777"])
+        await client.connect()
+
+        robot_name = await self.get_robot_name(order)
+        currency = await self.get_robot_currency(order)
+
+        event = EventBuilder(
+            Kind(38383), "", self.generate_tags(order, robot_name, currency)
+        ).to_event(keys)
+        await client.send_event(event)
+        print(f"Nostr event sent: {event.as_json()}")
+
+    @sync_to_async
+    def get_robot_name(self, order):
+        return order.maker.username
+
+    @sync_to_async
+    def get_robot_currency(self, order):
+        return str(order.currency)
+
+    def generate_tags(self, order, robot_name, currency):
+        hashed_id = hashlib.md5(
+            f"{config("COORDINATOR_ALIAS", cast=str)}{order.id}".encode("utf-8")
+        ).hexdigest()
+
+        tags = [
+            Tag.parse(["d", str(uuid.UUID(hashed_id))]),
+            Tag.parse(["name", robot_name]),
+            Tag.parse(["k", "sell" if order.type == Order.Types.SELL else "buy"]),
+            Tag.parse(["f", currency]),
+            Tag.parse(["s", self.get_status_tag(order)]),
+            Tag.parse(["amt", "0"]),
+            Tag.parse(
+                ["fa"] + [str(order.amount)]
+                if not order.has_range
+                else [str(order.min_amount), str(order.max_amount)]
+            ),
+            Tag.parse(["pm"] + order.payment_method.split(" ")),
+            Tag.parse(["premium", str(order.premium)]),
+            Tag.parse(
+                [
+                    "source",
+                    f"http://{config("HOST_NAME")}/order/{config("COORDINATOR_ALIAS", cast=str).lower()}/{order.id}",
+                ]
+            ),
+            Tag.parse(["expiration", str(int(order.expires_at.timestamp()))]),
+            Tag.parse(["y", "robosats", config("COORDINATOR_ALIAS", cast=str).lower()]),
+            Tag.parse(["n", str(config("NETWORK"))]),
+            Tag.parse(["layer"] + self.get_layer_tag(order)),
+            Tag.parse(["bond", str(order.bond_size)]),
+            Tag.parse(["z", "order"]),
+        ]
+
+        if order.latitude and order.longitude:
+            tags.extend(
+                [Tag.parse(["g", pygeohash.encode(order.latitude, order.longitude)])]
+            )
+
+        return tags
+
+    def get_status_tag(self, order):
+        if order.status == Order.Status.PUB:
+            return "pending"
+        else:
+            return "success"
+
+    def get_layer_tag(self, order):
+        if order.type == Order.Types.SELL:
+            return ["onchain", "lightning"]
+        else:
+            return ["lightning"]

api/tasks.py

@@ -1,3 +1,4 @@
+from asgiref.sync import async_to_sync
 from celery import shared_task
 from celery.exceptions import SoftTimeLimitExceeded
 
@@ -251,6 +252,20 @@ def cache_market():
         return
 
 
+@shared_task(name="", ignore_result=True, time_limit=120)
+def nostr_send_order_event(order_id=None):
+    if order_id:
+        from api.models import Order
+        from api.nostr import Nostr
+
+        order = Order.objects.get(id=order_id)
+
+        nostr = Nostr()
+        async_to_sync(nostr.send_order_event)(order)
+
+    return
+
+
 @shared_task(name="send_notification", ignore_result=True, time_limit=120)
 def send_notification(order_id=None, chat_message_id=None, message=None):
     if order_id:

docker-compose.yml

@@ -226,6 +226,16 @@ services:
     volumes:
       - ./node/db:/var/lib/postgresql/data
 
+  strfry:
+    build: ./docker/strfry
+    container_name: strfry-dev
+    restart: unless-stopped
+    volumes:
+      - ./docker/strfry/strfry.conf:/etc/strfry.conf:ro
+      - ./docker/strfry/onion_urls.txt:/app/onion_urls.txt:ro
+      - ./node/strfry/db:/app/strfry-db:rw
+    network_mode: service:tor
+
   # # Postgresql for CLN
   # postgres-cln:
   #   image: postgres:14.2-alpine

docker-tests.yml

@@ -27,6 +27,7 @@ services:
       - "9998:9998"
       - "5432:5432"
       - "6379:6379"
+      - "7777:7777"
     volumes:
       - bitcoin:/bitcoin/.bitcoin/
       - ./tests/bitcoind/entrypoint.sh:/entrypoint.sh
@@ -182,7 +183,7 @@ services:
   # celery-worker:
   #   image: backend-image
   #   pull_policy: never
-  #   container_name: celery-worker
+  #   container_name: test-celery-worker
   #   restart: always
   #   environment:
   #     DEVELOPMENT: True

docker/strfry/Dockerfile

@@ -0,0 +1,41 @@
+FROM ubuntu:jammy
+ENV TZ=Europe/London
+
+RUN apt update && apt install -y --no-install-recommends \
+    git g++ make pkg-config libtool ca-certificates \
+    libssl-dev zlib1g-dev liblmdb-dev libflatbuffers-dev \
+    libsecp256k1-dev libzstd-dev
+
+# setup app
+RUN git clone https://github.com/KoalaSat/strfry /app
+
+WORKDIR /app
+
+RUN git submodule update --init
+RUN make setup-golpe
+RUN make clean
+RUN make -j4
+
+RUN apt update && apt install -y --no-install-recommends \
+    liblmdb0 libflatbuffers1 libsecp256k1-0 libb2-1 libzstd1 torsocks cron\
+    && rm -rf /var/lib/apt/lists/*
+
+RUN echo "TorAddress 127.0.0.1" >> /etc/tor/torsocks.conf
+RUN echo "TorPort 9050" >> /etc/tor/torsocks.conf
+
+# Setting up crontab
+COPY crontab /etc/cron.d/crontab
+RUN chmod 0644 /etc/cron.d/crontab
+RUN crontab /etc/cron.d/crontab
+
+# Setting up entrypoints
+COPY sync.sh /etc/strfry/sync.sh
+COPY entrypoint.sh /etc/strfry/entrypoint.sh
+
+RUN chmod +x /etc/strfry/entrypoint.sh
+RUN chmod +x /etc/strfry/sync.sh
+
+#Setting up logs
+RUN touch /var/log/cron.log && chmod 0644 /var/log/cron.log
+
+ENTRYPOINT ["/etc/strfry/entrypoint.sh"]

docker/strfry/crontab

@@ -0,0 +1,24 @@
+# Edit this file to introduce tasks to be run by cron.
+#
+# Each task to run has to be defined through a single line
+# indicating with different fields when the task will be run
+# and what command to run for the task
+#
+# To define the time you can provide concrete values for
+# minute (m), hour (h), day of month (dom), month (mon),
+# and day of week (dow) or use '*' in these fields (for 'any').
+#
+# Notice that tasks will be started based on the cron's system
+# daemon's notion of time and timezones.
+#
+# Output of the crontab jobs (including errors) is sent through
+# email to the user the crontab file belongs to (unless redirected).
+#
+# For example, you can run a backup of all your user accounts
+# at 5 a.m every week with:
+# 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/
+#
+# For more information see the manual pages of crontab(5) and cron(8)
+#
+# m h  dom mon dow   command
+*/1 * * * * torsocks /etc/strfry/sync.sh >> /var/log/cron.log 2>&1