SDN Accounts refactoring

[osm/SO.git] / common / python / rift / mano / sdn / operdata.py

diff --git a/common/python/rift/mano/sdn/operdata.py b/common/python/rift/mano/sdn/operdata.py
new file mode 100644 (file)
index 0000000..b29f100
--- /dev/null
+++ b/common/python/rift/mano/sdn/operdata.py
@@ -0,0 +1,128 @@
+
+#
+#   Copyright 2017 RIFT.IO Inc
+#
+#   Licensed under the Apache License, Version 2.0 (the "License");
+#   you may not use this file except in compliance with the License.
+#   You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+#   Unless required by applicable law or agreed to in writing, software
+#   distributed under the License is distributed on an "AS IS" BASIS,
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#   See the License for the specific language governing permissions and
+#   limitations under the License.
+#
+
+import asyncio
+import rift.tasklets
+
+from gi.repository import(
+        RwSdnYang,
+        RwDts as rwdts,
+        )
+
+
+class SDNAccountNotFound(Exception):
+    pass
+
+
+class SDNAccountDtsOperdataHandler(object):
+    def __init__(self, dts, log, loop):
+        self._dts = dts
+        self._log = log
+        self._loop = loop
+
+        self.sdn_accounts = {}
+
+    def add_sdn_account(self, account):
+        self.sdn_accounts[account.name] = account
+        account.start_validate_credentials(self._loop)
+
+    def delete_sdn_account(self, account_name):
+        del self.sdn_accounts[account_name]
+
+    def get_saved_sdn_accounts(self, sdn_account_name):
+        ''' Get SDN Account corresponding to passed name, or all saved accounts if name is None'''
+        saved_sdn_accounts = []
+
+        if sdn_account_name is None or sdn_account_name == "":
+            sdn_accounts = list(self.sdn_accounts.values())
+            saved_sdn_accounts.extend(sdn_accounts)
+        elif sdn_account_name in self.sdn_accounts:
+            account = self.sdn_accounts[sdn_account_name]
+            saved_sdn_accounts.append(account)
+        else:
+            errstr = "SDN account {} does not exist".format(sdn_account_name)
+            raise KeyError(errstr)
+
+        return saved_sdn_accounts
+
+    def _register_show_status(self):
+        def get_xpath(sdn_name=None):
+            return "D,/rw-sdn:sdn/account{}/connection-status".format(
+                    "[name='%s']" % sdn_name if sdn_name is not None else ''
+                    )
+
+        @asyncio.coroutine
+        def on_prepare(xact_info, action, ks_path, msg):
+            self._log.debug("Got show SDN connection status request: %s", ks_path.create_string())
+            path_entry = RwSdnYang.SDNAccount.schema().keyspec_to_entry(ks_path)
+            sdn_account_name = path_entry.key00.name
+
+            try:
+                saved_accounts = self.get_saved_sdn_accounts(sdn_account_name)
+                for account in saved_accounts:
+                    connection_status = account.connection_status
+                    self._log.debug("Responding to SDN connection status request: %s", connection_status)
+                    xact_info.respond_xpath(
+                            rwdts.XactRspCode.MORE,
+                            xpath=get_xpath(account.name),
+                            msg=account.connection_status,
+                            )
+            except KeyError as e:
+                self._log.warning(str(e))
+                xact_info.respond_xpath(rwdts.XactRspCode.NA)
+                return
+
+            xact_info.respond_xpath(rwdts.XactRspCode.ACK)
+
+        yield from self._dts.register(
+                xpath=get_xpath(),
+                handler=rift.tasklets.DTS.RegistrationHandler(
+                    on_prepare=on_prepare),
+                flags=rwdts.Flag.PUBLISHER,
+                )
+
+    def _register_validate_rpc(self):
+        def get_xpath():
+            return "/rw-sdn:update-sdn-status"
+
+        @asyncio.coroutine
+        def on_prepare(xact_info, action, ks_path, msg):
+            if not msg.has_field("sdn_account"):
+                raise SDNAccountNotFound("SDN account name not provided")
+
+            sdn_account_name = msg.sdn_account
+            try:
+                account = self.sdn_accounts[sdn_account_name]
+            except KeyError:
+                raise SDNAccountNotFound("SDN account name %s not found" % sdn_account_name)
+
+            account.start_validate_credentials(self._loop)
+
+            xact_info.respond_xpath(rwdts.XactRspCode.ACK)
+
+        yield from self._dts.register(
+                xpath=get_xpath(),
+                handler=rift.tasklets.DTS.RegistrationHandler(
+                    on_prepare=on_prepare
+                    ),
+                flags=rwdts.Flag.PUBLISHER,
+                )
+
+    @asyncio.coroutine
+    def register(self):
+        yield from self._register_show_status()
+        yield from self._register_validate_rpc()