find ucloud -name \*.py -exec sed -i "s/ucloud/uncloud/g" {} \;

uncloud/metadata/main.py

@@ -0,0 +1,119 @@
+import os
+
+from flask import Flask, request
+from flask_restful import Resource, Api
+from werkzeug.exceptions import HTTPException
+
+from ucloud.settings import settings
+from ucloud.shared import shared
+
+app = Flask(__name__)
+api = Api(app)
+
+app.logger.handlers.clear()
+
+
+@app.errorhandler(Exception)
+def handle_exception(e):
+    app.logger.error(e)
+    # pass through HTTP errors
+    if isinstance(e, HTTPException):
+        return e
+
+    # now you're handling non-HTTP exceptions only
+    return {"message": "Server Error"}, 500
+
+
+def get_vm_entry(mac_addr):
+    return next(
+        filter(
+            lambda vm: mac_addr in list(zip(*vm.network))[1],
+            shared.vm_pool.vms,
+        ),
+        None,
+    )
+
+
+# https://stackoverflow.com/questions/37140846/how-to-convert-ipv6-link-local-address-to-mac-address-in-python
+def ipv62mac(ipv6):
+    # remove subnet info if given
+    subnet_index = ipv6.find("/")
+    if subnet_index != -1:
+        ipv6 = ipv6[:subnet_index]
+
+    ipv6_parts = ipv6.split(":")
+    mac_parts = list()
+    for ipv6_part in ipv6_parts[-4:]:
+        while len(ipv6_part) < 4:
+            ipv6_part = "0" + ipv6_part
+        mac_parts.append(ipv6_part[:2])
+        mac_parts.append(ipv6_part[-2:])
+
+    # modify parts to match MAC value
+    mac_parts[0] = "%02x" % (int(mac_parts[0], 16) ^ 2)
+    del mac_parts[4]
+    del mac_parts[3]
+    return ":".join(mac_parts)
+
+
+class Root(Resource):
+    @staticmethod
+    def get():
+        data = get_vm_entry(ipv62mac(request.remote_addr))
+
+        if not data:
+            return (
+                {"message": "Metadata for such VM does not exists."},
+                404,
+            )
+        else:
+            etcd_key = os.path.join(
+                settings["etcd"]["user_prefix"],
+                data.value["owner_realm"],
+                data.value["owner"],
+                "key",
+            )
+            etcd_entry = shared.etcd_client.get_prefix(
+                etcd_key, value_in_json=True
+            )
+            user_personal_ssh_keys = [key.value for key in etcd_entry]
+            data.value["metadata"]["ssh-keys"] += user_personal_ssh_keys
+            return data.value["metadata"], 200
+
+    @staticmethod
+    def post():
+        return {"message": "Previous Implementation is deprecated."}
+        # data = etcd_client.get("/v1/metadata/{}".format(request.remote_addr), value_in_json=True)
+        # print(data)
+        # if data:
+        #     for k in request.json:
+        #         if k not in data.value:
+        #             data.value[k] = request.json[k]
+        #             if k.endswith("-list"):
+        #                 data.value[k] = [request.json[k]]
+        #         else:
+        #             if k.endswith("-list"):
+        #                 data.value[k].append(request.json[k])
+        #             else:
+        #                 data.value[k] = request.json[k]
+        #     etcd_client.put("/v1/metadata/{}".format(request.remote_addr),
+        #                     data.value, value_in_json=True)
+        # else:
+        #     data = {}
+        #     for k in request.json:
+        #         data[k] = request.json[k]
+        #         if k.endswith("-list"):
+        #             data[k] = [request.json[k]]
+        #     etcd_client.put("/v1/metadata/{}".format(request.remote_addr),
+        #                     data, value_in_json=True)
+
+
+api.add_resource(Root, "/")
+
+
+def main():
+    app.run(debug=True, host="::", port="80")
+
+
+if __name__ == "__main__":
+    main()