X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=osm_lcm%2Fng_ro.py;fp=osm_lcm%2Fng_ro.py;h=6e9f6831466dbb87ec6e387a258353811a3fe913;hb=6500339f6d90776325acc9973f0c8243b62b9439;hp=0000000000000000000000000000000000000000;hpb=acc9045429bde37434966e93c0f8f525b1c06cb2;p=osm%2FLCM.git

diff --git a/osm_lcm/ng_ro.py b/osm_lcm/ng_ro.py
new file mode 100644
index 0000000..6e9f683
--- /dev/null
+++ b/osm_lcm/ng_ro.py
@@ -0,0 +1,189 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+##
+# Copyright 2020 Telefónica Investigación y Desarrollo, S.A.U.
+#
+# 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.
+#
+##
+
+"""
+asyncio RO python client to interact with New Generation RO server
+"""
+
+import asyncio
+import aiohttp
+import yaml
+import logging
+
+__author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com"
+__date__ = "$09-Jan-2018 09:09:48$"
+__version__ = "0.1.2"
+version_date = "2020-05-08"
+
+
+class NgRoException(Exception):
+    def __init__(self, message, http_code=400):
+        """Common Exception for all RO client exceptions"""
+        self.http_code = http_code
+        Exception.__init__(self, message)
+
+
+class NgRoClient:
+    headers_req = {'Accept': 'application/yaml', 'content-type': 'application/yaml'}
+    client_to_RO = {'tenant': 'tenants', 'vim': 'datacenters', 'vim_account': 'datacenters', 'sdn': 'sdn_controllers',
+                    'vnfd': 'vnfs', 'nsd': 'scenarios', 'wim': 'wims', 'wim_account': 'wims',
+                    'ns': 'instances'}
+    mandatory_for_create = {
+        'tenant': ("name", ),
+        'vnfd': ("name", "id"),
+        'nsd': ("name", "id"),
+        'ns': ("name", "scenario", "datacenter"),
+        'vim': ("name", "vim_url"),
+        'wim': ("name", "wim_url"),
+        'vim_account': (),
+        'wim_account': (),
+        'sdn': ("name", 'type'),
+    }
+    timeout_large = 120
+    timeout_short = 30
+
+    def __init__(self, loop, uri, **kwargs):
+        self.loop = loop
+        self.endpoint_url = uri
+        if not self.endpoint_url.endswith("/"):
+            self.endpoint_url += "/"
+        if not self.endpoint_url.startswith("http"):
+            self.endpoint_url = "http://" + self.endpoint_url
+
+        self.username = kwargs.get("username")
+        self.password = kwargs.get("password")
+        self.tenant_id_name = kwargs.get("tenant")
+        self.tenant = None
+        self.datacenter_id_name = kwargs.get("datacenter")
+        self.datacenter = None
+        logger_name = kwargs.get('logger_name', 'lcm.ro')
+        self.logger = logging.getLogger(logger_name)
+        if kwargs.get("loglevel"):
+            self.logger.setLevel(kwargs["loglevel"])
+
+    async def deploy(self, nsr_id, target):
+        """
+        Performs an action over an item
+        :param item: can be 'tenant', 'vnfd', 'nsd', 'ns', 'vim', 'vim_account', 'sdn'
+        :param item_id_name: RO id or name of the item. Raise and exception if more than one found
+        :param descriptor: can be a dict, or a yaml/json text. Autodetect unless descriptor_format is provided
+        :param descriptor_format: Can be 'json' or 'yaml'
+        :param kwargs: Overrides descriptor with values as name, description, vim_url, vim_url_admin, vim_type
+               keys can be a dot separated list to specify elements inside dict
+        :return: dictionary with the information or raises NgRoException on Error
+        """
+        try:
+            if isinstance(target, str):
+                target = self._parse_yaml(target)
+            payload_req = yaml.safe_dump(target)
+
+            url = "{}/ns/v1/deploy/{nsr_id}".format(self.endpoint_url, nsr_id=nsr_id)
+            async with aiohttp.ClientSession(loop=self.loop) as session:
+                self.logger.debug("NG-RO POST %s %s", url, payload_req)
+                # timeout = aiohttp.ClientTimeout(total=self.timeout_large)
+                async with session.post(url, headers=self.headers_req, data=payload_req) as response:
+                    response_text = await response.read()
+                    self.logger.debug("POST {} [{}] {}".format(url, response.status, response_text[:100]))
+                    if response.status >= 300:
+                        raise NgRoException(response_text, http_code=response.status)
+                    return self._parse_yaml(response_text, response=True)
+        except (aiohttp.ClientOSError, aiohttp.ClientError) as e:
+            raise NgRoException(e, http_code=504)
+        except asyncio.TimeoutError:
+            raise NgRoException("Timeout", http_code=504)
+
+    async def status(self, nsr_id, action_id):
+        try:
+            url = "{}/ns/v1/deploy/{nsr_id}/{action_id}".format(self.endpoint_url, nsr_id=nsr_id, action_id=action_id)
+            async with aiohttp.ClientSession(loop=self.loop) as session:
+                self.logger.debug("GET %s", url)
+                # timeout = aiohttp.ClientTimeout(total=self.timeout_short)
+                async with session.get(url, headers=self.headers_req) as response:
+                    response_text = await response.read()
+                    self.logger.debug("GET {} [{}] {}".format(url, response.status, response_text[:100]))
+                    if response.status >= 300:
+                        raise NgRoException(response_text, http_code=response.status)
+                    return self._parse_yaml(response_text, response=True)
+
+        except (aiohttp.ClientOSError, aiohttp.ClientError) as e:
+            raise NgRoException(e, http_code=504)
+        except asyncio.TimeoutError:
+            raise NgRoException("Timeout", http_code=504)
+
+    async def delete(self, nsr_id):
+        try:
+            url = "{}/ns/v1/deploy/{nsr_id}".format(self.endpoint_url, nsr_id=nsr_id)
+            async with aiohttp.ClientSession(loop=self.loop) as session:
+                self.logger.debug("DELETE %s", url)
+                # timeout = aiohttp.ClientTimeout(total=self.timeout_short)
+                async with session.delete(url, headers=self.headers_req) as response:
+                    self.logger.debug("DELETE {} [{}]".format(url, response.status))
+                    if response.status >= 300:
+                        raise NgRoException("Delete {}".format(nsr_id), http_code=response.status)
+                    return
+
+        except (aiohttp.ClientOSError, aiohttp.ClientError) as e:
+            raise NgRoException(e, http_code=504)
+        except asyncio.TimeoutError:
+            raise NgRoException("Timeout", http_code=504)
+
+    async def get_version(self):
+        """
+        Obtain RO server version.
+        :return: a list with integers ["major", "minor", "release"]. Raises NgRoException on Error,
+        """
+        try:
+            response_text = ""
+            async with aiohttp.ClientSession(loop=self.loop) as session:
+                url = "{}/version".format(self.endpoint_url)
+                self.logger.debug("RO GET %s", url)
+                # timeout = aiohttp.ClientTimeout(total=self.timeout_short)
+                async with session.get(url, headers=self.headers_req) as response:
+                    response_text = await response.read()
+                    self.logger.debug("GET {} [{}] {}".format(url, response.status, response_text[:100]))
+                    if response.status >= 300:
+                        raise NgRoException(response_text, http_code=response.status)
+
+                for word in str(response_text).split(" "):
+                    if "." in word:
+                        version_text, _, _ = word.partition("-")
+                        return version_text
+                raise NgRoException("Got invalid version text: '{}'".format(response_text), http_code=500)
+        except (aiohttp.ClientOSError, aiohttp.ClientError) as e:
+            raise NgRoException(e, http_code=504)
+        except asyncio.TimeoutError:
+            raise NgRoException("Timeout", http_code=504)
+        except Exception as e:
+            raise NgRoException("Got invalid version text: '{}'; causing exception {}".format(response_text, e),
+                                http_code=500)
+
+    @staticmethod
+    def _parse_yaml(descriptor, response=False):
+        try:
+            return yaml.safe_load(descriptor)
+        except yaml.YAMLError as exc:
+            error_pos = ""
+            if hasattr(exc, 'problem_mark'):
+                mark = exc.problem_mark
+                error_pos = " at line:{} column:{}s".format(mark.line + 1, mark.column + 1)
+            error_text = "yaml format error" + error_pos
+            if response:
+                raise NgRoException("reponse with " + error_text)
+            raise NgRoException(error_text)