update clients script

Dockerfile

@@ -3,11 +3,13 @@ ARG BASE_IMAGE="binhex/arch-base"
 
 FROM --platform=${BUILDPLATFORM} ${BASE_IMAGE}
 
-ARG HERMES_VERSION="v1.7.0"
+ARG HERMES_VERSION="v1.7.3"
 
 COPY ./etc /etc/
+COPY ./bin /usr/local/bin/
 
 RUN set -eux && \
+    pacman -Syyu --noconfirm python-toml && \
     curl -sSL https://github.com/informalsystems/hermes/releases/download/${HERMES_VERSION}/hermes-${HERMES_VERSION}-x86_64-unknown-linux-gnu.tar.gz | \
     tar -xz -C /usr/local/bin && \
     chmod +x /usr/local/bin/* && \

bin/update_clients.py

@@ -0,0 +1,83 @@
+#! /usr/bin/env python3
+
+import toml, json, subprocess
+
+HERMES = "hermes"
+HERMES_CONFIG = "/hermes/config.toml"
+
+
+def hermes(command):
+    process = subprocess.run(
+        [HERMES, "--config", HERMES_CONFIG, "--json"] + command.split(" "),
+        stdout=subprocess.PIPE,
+        text=True,
+    )
+    output_lines = process.stdout.splitlines()
+
+    for line in output_lines:
+        line_json = json.loads(line)
+        if "result" in line_json:
+            return line_json
+    else:
+        return None
+
+
+def get_connection(chain_id, port, channel):
+    output = hermes(
+        f"query channel end --chain {chain_id} --port {port} --channel {channel}"
+    )
+
+    if output["status"] == "success":
+        return output["result"]["connection_hops"][0]
+    else:
+        return None
+
+
+def get_client_id(chain_id, connection):
+    output = hermes(
+        f"query connection end --chain {chain_id} --connection {connection}"
+    )
+
+    if output["status"] == "success":
+        return output["result"]["client_id"]
+    else:
+        return None
+
+
+def get_clients_from_config():
+    config = toml.load(HERMES_CONFIG)
+    clients = []
+
+    for chain in config["chains"]:
+        chain_id = chain["id"]
+        whitelist = chain["packet_filter"]["list"]
+
+        for position in whitelist:
+            port = position[0]
+            channel = position[1]
+
+            connection = get_connection(chain_id, port, channel)
+            if connection:
+                client = get_client_id(chain_id, connection)
+                if client:
+                    clients.append((chain_id, client))
+
+    return clients
+
+
+def update_clients():
+    clients = get_clients_from_config()
+    for client in clients:
+        chain_id = client[0]
+        client_id = client[1]
+
+        output = hermes(f"update client --host-chain {chain_id} --client {client_id}")
+        result = output["result"]
+
+        if output["status"] == "success":
+            print(f"Success: {client_id} ({chain_id})")
+        else:
+            print(f"Failed: {result}")
+
+
+update_clients()