Feature 10909: Heal operation for VDU
[osm/osmclient.git] / osmclient / sol005 / ns.py
index 4134f77..00d68d6 100644 (file)
@@ -19,115 +19,671 @@ OSM ns API handling
 """
 
 from osmclient.common import utils
+from osmclient.common import wait as WaitForStatus
 from osmclient.common.exceptions import ClientException
 from osmclient.common.exceptions import NotFound
 import yaml
+import json
+import logging
 
 
 class Ns(object):
-
     def __init__(self, http=None, client=None):
         self._http = http
         self._client = client
-        self._apiName = '/nslcm'
-        self._apiVersion = '/v1'
-        self._apiResource = '/ns_instances_content'
-        self._apiBase = '{}{}{}'.format(self._apiName,
-                                        self._apiVersion, self._apiResource)
+        self._logger = logging.getLogger("osmclient")
+        self._apiName = "/nslcm"
+        self._apiVersion = "/v1"
+        self._apiResource = "/ns_instances_content"
+        self._apiBase = "{}{}{}".format(
+            self._apiName, self._apiVersion, self._apiResource
+        )
+
+    # NS '--wait' option
+    def _wait(self, id, wait_time, deleteFlag=False):
+        self._logger.debug("")
+        # Endpoint to get operation status
+        apiUrlStatus = "{}{}{}".format(
+            self._apiName, self._apiVersion, "/ns_lcm_op_occs"
+        )
+        # Wait for status for NS instance creation/update/deletion
+        if isinstance(wait_time, bool):
+            wait_time = WaitForStatus.TIMEOUT_NS_OPERATION
+        WaitForStatus.wait_for_status(
+            "NS",
+            str(id),
+            wait_time,
+            apiUrlStatus,
+            self._http.get2_cmd,
+            deleteFlag=deleteFlag,
+        )
 
     def list(self, filter=None):
-        """Returns a list of NS
-        """
-        filter_string = ''
+        """Returns a list of NS"""
+        self._logger.debug("")
+        self._client.get_token()
+        filter_string = ""
         if filter:
-            filter_string = '?{}'.format(filter)
-        resp = self._http.get_cmd('{}{}'.format(self._apiBase,filter_string))
+            filter_string = "?{}".format(filter)
+        _, resp = self._http.get2_cmd("{}{}".format(self._apiBase, filter_string))
         if resp:
-            return resp
+            return json.loads(resp)
         return list()
 
     def get(self, name):
-        """Returns an NS based on name or id
-        """
+        """Returns an NS based on name or id"""
+        self._logger.debug("")
+        self._client.get_token()
         if utils.validate_uuid4(name):
             for ns in self.list():
-                if name == ns['_id']:
+                if name == ns["_id"]:
                     return ns
         else:
             for ns in self.list():
-                if name == ns['name']:
+                if name == ns["name"]:
                     return ns
-        raise NotFound("ns {} not found".format(name))
+        raise NotFound("ns '{}' not found".format(name))
 
     def get_individual(self, name):
+        self._logger.debug("")
+        self._client.get_token()
         ns_id = name
         if not utils.validate_uuid4(name):
             for ns in self.list():
-                if name == ns['name']:
-                    ns_id = ns['_id']
+                if name == ns["name"]:
+                    ns_id = ns["_id"]
                     break
-        resp = self._http.get_cmd('{}/{}'.format(self._apiBase, ns_id))
-        #resp = self._http.get_cmd('{}/{}/nsd_content'.format(self._apiBase, ns_id))
-        #print yaml.safe_dump(resp)
-        if resp:
-            return resp
-        raise NotFound("ns {} not found".format(name))
+        try:
+            _, resp = self._http.get2_cmd("{}/{}".format(self._apiBase, ns_id))
+            # resp = self._http.get_cmd('{}/{}/nsd_content'.format(self._apiBase, ns_id))
+            # print(yaml.safe_dump(resp))
+            if resp:
+                return json.loads(resp)
+        except NotFound:
+            raise NotFound("ns '{}' not found".format(name))
+        raise NotFound("ns '{}' not found".format(name))
 
-    def delete(self, name):
+    def delete(self, name, force=False, config=None, wait=False):
+        """
+        Deletes a Network Service (NS)
+        :param name: name of network service
+        :param force: set force. Direct deletion without cleaning at VIM
+        :param config: parameters of deletion, as:
+             autoremove: Bool (default True)
+             timeout_ns_terminate: int
+             skip_terminate_primitives: Bool (default False) to not exec the terminate primitives
+        :param wait: Make synchronous. Wait until deletion is completed:
+            False to not wait (by default), True to wait a standard time, or int (time to wait)
+        :return: None. Exception if fail
+        """
+        self._logger.debug("")
         ns = self.get(name)
-        resp = self._http.delete_cmd('{}/{}'.format(self._apiBase,ns['_id']))
-        #print 'RESP: '.format(resp)
-        if resp is None:
-            print 'Deleted'
+        querystring_list = []
+        querystring = ""
+        if config:
+            ns_config = yaml.safe_load(config)
+            querystring_list += ["{}={}".format(k, v) for k, v in ns_config.items()]
+        if force:
+            querystring_list.append("FORCE=True")
+        if querystring_list:
+            querystring = "?" + "&".join(querystring_list)
+        http_code, resp = self._http.delete_cmd(
+            "{}/{}{}".format(self._apiBase, ns["_id"], querystring)
+        )
+        # TODO change to use a POST self._http.post_cmd('{}/{}/terminate{}'.format(_apiBase, ns['_id'], querystring),
+        #                                               postfields_dict=ns_config)
+        # seting autoremove as True by default
+        # print('HTTP CODE: {}'.format(http_code))
+        # print('RESP: {}'.format(resp))
+        if http_code == 202:
+            if wait and resp:
+                resp = json.loads(resp)
+                # For the 'delete' operation, '_id' is used
+                self._wait(resp.get("_id"), wait, deleteFlag=True)
+            else:
+                print("Deletion in progress")
+        elif http_code == 204:
+            print("Deleted")
         else:
-            raise ClientException("failed to delete ns {}: {}".format(name, resp))
-
-    def create(self, nsd_name, nsr_name, account, config=None,
-               ssh_keys=None, description='default description',
-               admin_status='ENABLED'):
+            msg = resp or ""
+            # if resp:
+            #     try:
+            #         msg = json.loads(resp)
+            #     except ValueError:
+            #         msg = resp
+            raise ClientException("failed to delete ns {} - {}".format(name, msg))
 
+    def create(
+        self,
+        nsd_name,
+        nsr_name,
+        account,
+        config=None,
+        ssh_keys=None,
+        description="default description",
+        admin_status="ENABLED",
+        wait=False,
+        timeout=None,
+    ):
+        self._logger.debug("")
+        self._client.get_token()
         nsd = self._client.nsd.get(nsd_name)
-        
-        datacenter = self._client.vim.get(account)
-        if datacenter is None:
-            raise NotFound("cannot find datacenter account {}".format(account))
 
+        vim_account_id = {}
+        wim_account_id = {}
+
+        def get_vim_account_id(vim_account):
+            self._logger.debug("")
+            if vim_account_id.get(vim_account):
+                return vim_account_id[vim_account]
+            vim = self._client.vim.get(vim_account)
+            if vim is None:
+                raise NotFound("cannot find vim account '{}'".format(vim_account))
+            vim_account_id[vim_account] = vim["_id"]
+            return vim["_id"]
+
+        def get_wim_account_id(wim_account):
+            self._logger.debug("")
+            # wim_account can be False (boolean) to indicate not use wim account
+            if not isinstance(wim_account, str):
+                return wim_account
+            if wim_account_id.get(wim_account):
+                return wim_account_id[wim_account]
+            wim = self._client.wim.get(wim_account)
+            if wim is None:
+                raise NotFound("cannot find wim account '{}'".format(wim_account))
+            wim_account_id[wim_account] = wim["_id"]
+            return wim["_id"]
+
+        vim_id = get_vim_account_id(account)
         ns = {}
-        ns['nsdId'] = nsd['_id']
-        ns['nsName'] = nsr_name
-        ns['nsDescription'] = description
-        #ns['vimAccountId'] = datacenter['_id']
-        # TODO: Fix it to use datacenter _id
-        ns['vimAccountId'] = datacenter['name']
-        #ns['userdata'] = {}
-        #ns['userdata']['key1']='value1'
-        #ns['userdata']['key2']='value2'
-        
+        ns["nsdId"] = nsd["_id"]
+        ns["nsName"] = nsr_name
+        ns["nsDescription"] = description
+        ns["vimAccountId"] = vim_id
+        # ns['userdata'] = {}
+        # ns['userdata']['key1']='value1'
+        # ns['userdata']['key2']='value2'
+
         if ssh_keys is not None:
-            # ssh_keys is comma separate list
-            ssh_keys_format = []
-            for key in ssh_keys.split(','):
-                ssh_keys_format.append({'key-pair-ref': key})
+            ns["ssh_keys"] = []
+            for pubkeyfile in ssh_keys.split(","):
+                with open(pubkeyfile, "r") as f:
+                    ns["ssh_keys"].append(f.read())
+        if timeout:
+            ns["timeout_ns_deploy"] = timeout
+        if config:
+            ns_config = yaml.safe_load(config)
+            if "vim-network-name" in ns_config:
+                ns_config["vld"] = ns_config.pop("vim-network-name")
+            if "vld" in ns_config:
+                if not isinstance(ns_config["vld"], list):
+                    raise ClientException(
+                        "Error at --config 'vld' must be a list of dictionaries"
+                    )
+                for vld in ns_config["vld"]:
+                    if not isinstance(vld, dict):
+                        raise ClientException(
+                            "Error at --config 'vld' must be a list of dictionaries"
+                        )
+                    if vld.get("vim-network-name"):
+                        if isinstance(vld["vim-network-name"], dict):
+                            vim_network_name_dict = {}
+                            for vim_account, vim_net in vld["vim-network-name"].items():
+                                vim_network_name_dict[
+                                    get_vim_account_id(vim_account)
+                                ] = vim_net
+                            vld["vim-network-name"] = vim_network_name_dict
+                    if "wim_account" in vld and vld["wim_account"] is not None:
+                        vld["wimAccountId"] = get_wim_account_id(vld.pop("wim_account"))
+            if "vnf" in ns_config:
+                for vnf in ns_config["vnf"]:
+                    if vnf.get("vim_account"):
+                        vnf["vimAccountId"] = get_vim_account_id(vnf.pop("vim_account"))
+
+            if "additionalParamsForNs" in ns_config:
+                if not isinstance(ns_config["additionalParamsForNs"], dict):
+                    raise ClientException(
+                        "Error at --config 'additionalParamsForNs' must be a dictionary"
+                    )
+            if "additionalParamsForVnf" in ns_config:
+                if not isinstance(ns_config["additionalParamsForVnf"], list):
+                    raise ClientException(
+                        "Error at --config 'additionalParamsForVnf' must be a list"
+                    )
+                for additional_param_vnf in ns_config["additionalParamsForVnf"]:
+                    if not isinstance(additional_param_vnf, dict):
+                        raise ClientException(
+                            "Error at --config 'additionalParamsForVnf' items must be dictionaries"
+                        )
+                    if not additional_param_vnf.get("member-vnf-index"):
+                        raise ClientException(
+                            "Error at --config 'additionalParamsForVnf' items must contain "
+                            "'member-vnf-index'"
+                        )
+            if "wim_account" in ns_config:
+                wim_account = ns_config.pop("wim_account")
+                if wim_account is not None:
+                    ns["wimAccountId"] = get_wim_account_id(wim_account)
+            # rest of parameters without any transformation or checking
+            # "timeout_ns_deploy"
+            # "placement-engine"
+            ns.update(ns_config)
+
+        # print(yaml.safe_dump(ns))
+        try:
+            self._apiResource = "/ns_instances_content"
+            self._apiBase = "{}{}{}".format(
+                self._apiName, self._apiVersion, self._apiResource
+            )
+            headers = self._client._headers
+            headers["Content-Type"] = "application/yaml"
+            http_header = [
+                "{}: {}".format(key, val) for (key, val) in list(headers.items())
+            ]
+            self._http.set_http_header(http_header)
+            http_code, resp = self._http.post_cmd(
+                endpoint=self._apiBase, postfields_dict=ns
+            )
+            # print('HTTP CODE: {}'.format(http_code))
+            # print('RESP: {}'.format(resp))
+            # if http_code in (200, 201, 202, 204):
+            if resp:
+                resp = json.loads(resp)
+            if not resp or "id" not in resp:
+                raise ClientException(
+                    "unexpected response from server - {} ".format(resp)
+                )
+            if wait:
+                # Wait for status for NS instance creation
+                self._wait(resp.get("nslcmop_id"), wait)
+            print(resp["id"])
+            return resp["id"]
+            # else:
+            #    msg = ""
+            #    if resp:
+            #        try:
+            #            msg = json.loads(resp)
+            #        except ValueError:
+            #            msg = resp
+            #    raise ClientException(msg)
+        except ClientException as exc:
+            message = "failed to create ns: {} nsd: {}\nerror:\n{}".format(
+                nsr_name, nsd_name, str(exc)
+            )
+            raise ClientException(message)
+
+    def list_op(self, name, filter=None):
+        """Returns the list of operations of a NS"""
+        self._logger.debug("")
+        ns = self.get(name)
+        try:
+            self._apiResource = "/ns_lcm_op_occs"
+            self._apiBase = "{}{}{}".format(
+                self._apiName, self._apiVersion, self._apiResource
+            )
+            filter_string = ""
+            if filter:
+                filter_string = "&{}".format(filter)
+            http_code, resp = self._http.get2_cmd(
+                "{}?nsInstanceId={}{}".format(self._apiBase, ns["_id"], filter_string)
+            )
+            # print('HTTP CODE: {}'.format(http_code))
+            # print('RESP: {}'.format(resp))
+            if http_code == 200:
+                if resp:
+                    resp = json.loads(resp)
+                    return resp
+                else:
+                    raise ClientException("unexpected response from server")
+            else:
+                msg = resp or ""
+                #    if resp:
+                #        try:
+                #            resp = json.loads(resp)
+                #            msg = resp['detail']
+                #        except ValueError:
+                #            msg = resp
+                raise ClientException(msg)
+        except ClientException as exc:
+            message = "failed to get operation list of NS {}:\nerror:\n{}".format(
+                name, str(exc)
+            )
+            raise ClientException(message)
+
+    def get_op(self, operationId):
+        """Returns the status of an operation"""
+        self._logger.debug("")
+        self._client.get_token()
+        try:
+            self._apiResource = "/ns_lcm_op_occs"
+            self._apiBase = "{}{}{}".format(
+                self._apiName, self._apiVersion, self._apiResource
+            )
+            http_code, resp = self._http.get2_cmd(
+                "{}/{}".format(self._apiBase, operationId)
+            )
+            # print('HTTP CODE: {}'.format(http_code))
+            # print('RESP: {}'.format(resp))
+            if http_code == 200:
+                if resp:
+                    resp = json.loads(resp)
+                    return resp
+                else:
+                    raise ClientException("unexpected response from server")
+            else:
+                msg = resp or ""
+                #    if resp:
+                #        try:
+                #            resp = json.loads(resp)
+                #            msg = resp['detail']
+                #        except ValueError:
+                #            msg = resp
+                raise ClientException(msg)
+        except ClientException as exc:
+            message = "failed to get status of operation {}:\nerror:\n{}".format(
+                operationId, str(exc)
+            )
+            raise ClientException(message)
 
-            ns['ssh-authorized-key'] = ssh_keys_format
+    def exec_op(
+        self,
+        name,
+        op_name,
+        op_data=None,
+        wait=False,
+    ):
+        """Executes an operation on a NS"""
+        self._logger.debug("")
+        ns = self.get(name)
+        try:
+            ns = self.get(name)
+            self._apiResource = "/ns_instances"
+            self._apiBase = "{}{}{}".format(
+                self._apiName, self._apiVersion, self._apiResource
+            )
+            endpoint = "{}/{}/{}".format(self._apiBase, ns["_id"], op_name)
+            # print('OP_NAME: {}'.format(op_name))
+            # print('OP_DATA: {}'.format(json.dumps(op_data)))
+            http_code, resp = self._http.post_cmd(
+                endpoint=endpoint, postfields_dict=op_data
+            )
+            # print('HTTP CODE: {}'.format(http_code))
+            # print('RESP: {}'.format(resp))
+            # if http_code in (200, 201, 202, 204):
+            if resp:
+                resp = json.loads(resp)
+            if not resp or "id" not in resp:
+                raise ClientException(
+                    "unexpected response from server - {}".format(resp)
+                )
+            if wait:
+                # Wait for status for NS instance action
+                # For the 'action' operation, 'id' is used
+                self._wait(resp.get("id"), wait)
+            return resp["id"]
+            # else:
+            #    msg = ""
+            #    if resp:
+            #        try:
+            #            msg = json.loads(resp)
+            #        except ValueError:
+            #            msg = resp
+            #    raise ClientException(msg)
+        except ClientException as exc:
+            message = "failed to exec operation {}:\nerror:\n{}".format(name, str(exc))
+            raise ClientException(message)
 
-        #print yaml.safe_dump(ns)
+    def scale_vnf(
+        self,
+        ns_name,
+        vnf_name,
+        scaling_group,
+        scale_in,
+        scale_out,
+        wait=False,
+        timeout=None,
+    ):
+        """Scales a VNF by adding/removing VDUs"""
+        self._logger.debug("")
+        self._client.get_token()
         try:
-            self._apiResource = '/ns_instances_content'
-            self._apiBase = '{}{}{}'.format(self._apiName,
-                                            self._apiVersion, self._apiResource)
-            #print resp
-            resp = self._http.post_cmd(endpoint=self._apiBase,
-                                       postfields_dict=ns)
-            if not resp or 'id' not in resp:
-                raise ClientException('unexpected response from server: '.format(
-                                      resp))
+            op_data = {}
+            op_data["scaleType"] = "SCALE_VNF"
+            op_data["scaleVnfData"] = {}
+            if scale_in and not scale_out:
+                op_data["scaleVnfData"]["scaleVnfType"] = "SCALE_IN"
+            elif not scale_in and scale_out:
+                op_data["scaleVnfData"]["scaleVnfType"] = "SCALE_OUT"
             else:
-                print resp['id']
+                raise ClientException("you must set either 'scale_in' or 'scale_out'")
+            op_data["scaleVnfData"]["scaleByStepData"] = {
+                "member-vnf-index": vnf_name,
+                "scaling-group-descriptor": scaling_group,
+            }
+            if timeout:
+                op_data["timeout_ns_scale"] = timeout
+            op_id = self.exec_op(ns_name, op_name="scale", op_data=op_data, wait=wait)
+            print(str(op_id))
         except ClientException as exc:
-            message="failed to create ns: {} nsd: {}\nerror:\n{}".format(
-                    nsr_name,
-                    nsd_name,
-                    exc.message)
+            message = "failed to scale vnf {} of ns {}:\nerror:\n{}".format(
+                vnf_name, ns_name, str(exc)
+            )
             raise ClientException(message)
 
+    def update(self, ns_name, data, wait=False):
+        """Update NS instance.
+
+        This function calls the NBI in order to perform an update operation
+        on a Network Service instance.
+
+        Args:
+            ns_name: (str)
+            data: (dict)
+            wait: (boolean)
+
+        Returns:
+            None
+
+        """
+        self._logger.debug("")
+        self._client.get_token()
+        try:
+            op_data = {"updateType": data.pop("updateType")}
+
+            # Check update parameters availability according to update type
+            if op_data["updateType"] == "CHANGE_VNFPKG":
+                if not (
+                    data["config"]["changeVnfPackageData"][0].get("vnfInstanceId")
+                    and data["config"]["changeVnfPackageData"][0].get("vnfdId")
+                ):
+                    raise ClientException("you must set both vnfInstanceId and vnfdId")
+
+            # Fill up op_data
+            op_data["changeVnfPackageData"] = {}
+            op_data["changeVnfPackageData"]["vnfInstanceId"] = data["config"][
+                "changeVnfPackageData"
+            ][0].get("vnfInstanceId")
+
+            op_data["changeVnfPackageData"]["vnfdId"] = data["config"][
+                "changeVnfPackageData"
+            ][0].get("vnfdId")
+
+            if data.get("timeout"):
+                op_data["timeout_ns_update"] = data["timeout"]
+
+            op_id = self.exec_op(ns_name, op_name="update", op_data=op_data, wait=wait)
+            print(str(op_id))
+
+        except ClientException as exc:
+            message = "failed to update ns {}:\nerror:\n{}".format(ns_name, str(exc))
+            raise ClientException(message)
+
+    def create_alarm(self, alarm):
+        self._logger.debug("")
+        self._client.get_token()
+        data = {}
+        data["create_alarm_request"] = {}
+        data["create_alarm_request"]["alarm_create_request"] = alarm
+        try:
+            http_code, resp = self._http.post_cmd(
+                endpoint="/test/message/alarm_request", postfields_dict=data
+            )
+            # print('HTTP CODE: {}'.format(http_code))
+            # print('RESP: {}'.format(resp))
+            # if http_code in (200, 201, 202, 204):
+            #     resp = json.loads(resp)
+            print("Alarm created")
+            # else:
+            #    msg = ""
+            #    if resp:
+            #        try:
+            #            msg = json.loads(resp)
+            #        except ValueError:
+            #            msg = resp
+            #    raise ClientException('error: code: {}, resp: {}'.format(
+            #                          http_code, msg))
+        except ClientException as exc:
+            message = "failed to create alarm: alarm {}\n{}".format(alarm, str(exc))
+            raise ClientException(message)
+
+    def delete_alarm(self, name):
+        self._logger.debug("")
+        self._client.get_token()
+        data = {}
+        data["delete_alarm_request"] = {}
+        data["delete_alarm_request"]["alarm_delete_request"] = {}
+        data["delete_alarm_request"]["alarm_delete_request"]["alarm_uuid"] = name
+        try:
+            http_code, resp = self._http.post_cmd(
+                endpoint="/test/message/alarm_request", postfields_dict=data
+            )
+            # print('HTTP CODE: {}'.format(http_code))
+            # print('RESP: {}'.format(resp))
+            # if http_code in (200, 201, 202, 204):
+            #    resp = json.loads(resp)
+            print("Alarm deleted")
+            # else:
+            #    msg = ""
+            #    if resp:
+            #        try:
+            #            msg = json.loads(resp)
+            #        except ValueError:
+            #            msg = resp
+            #    raise ClientException('error: code: {}, resp: {}'.format(
+            #                          http_code, msg))
+        except ClientException as exc:
+            message = "failed to delete alarm: alarm {}\n{}".format(name, str(exc))
+            raise ClientException(message)
+
+    def get_alarm(self, project_name=None, ns_id=None, uuid=None):
+        self._client.get_token()
+        try:
+            self._apiName = "/nsfm"
+            self._apiResource = "/alarms"
+            self._apiBase = "{}{}{}".format(
+                self._apiName, self._apiVersion, self._apiResource
+            )
+            if uuid:
+                # if request is for any uuid
+                http_code, resp = self._http.get2_cmd(
+                    "{}/{}".format(self._apiBase, uuid)
+                )
+            if not uuid:
+                http_code, resp = self._http.get2_cmd(
+                    "{}/{}/{}/{}".format(self._apiBase, uuid, project_name, ns_id)
+                )
+            if http_code == 200:
+                if resp:
+                    resp = json.loads(resp)
+                    return resp
+                else:
+                    raise ClientException("unexpected response from server")
+            else:
+                msg = resp or ""
+                raise ClientException(msg)
+        except ClientException as exc:
+            message = "failed to get alarm :\nerror:\n{}".format(str(exc))
+            raise ClientException(message)
+
+    def update_alarm(self, uuid, threshold=None, is_enable=None, wait=None):
+        self._client.get_token()
+        try:
+            op_data = {}
+            op_data["uuid"] = uuid
+            op_data["threshold"] = threshold
+            op_data["is_enable"] = is_enable
+            self._apiName = "/nsfm"
+            self._apiResource = "/alarms"
+            self._apiBase = "{}{}{}".format(
+                self._apiName, self._apiVersion, self._apiResource
+            )
+            http_code, resp = self._http.patch_cmd(
+                endpoint="{}".format(self._apiBase), postfields_dict=op_data
+            )
+            if resp:
+                resp = json.loads(resp)
+            print(resp)
+            return resp
+        except ClientException as exc:
+            message = "failed to update alarm :\nerror:\n{}".format(str(exc))
+            raise ClientException(message)
+
+    def export_metric(self, metric):
+        self._logger.debug("")
+        self._client.get_token()
+        data = {}
+        data["read_metric_data_request"] = metric
+        try:
+            http_code, resp = self._http.post_cmd(
+                endpoint="/test/message/metric_request", postfields_dict=data
+            )
+            # print('HTTP CODE: {}'.format(http_code))
+            # print('RESP: {}'.format(resp))
+            # if http_code in (200, 201, 202, 204):
+            #    resp = json.loads(resp)
+            return "Metric exported"
+            # else:
+            #    msg = ""
+            #    if resp:
+            #        try:
+            #            msg = json.loads(resp)
+            #        except ValueError:
+            #            msg = resp
+            #    raise ClientException('error: code: {}, resp: {}'.format(
+            #                          http_code, msg))
+        except ClientException as exc:
+            message = "failed to export metric: metric {}\n{}".format(metric, str(exc))
+            raise ClientException(message)
+
+    def get_field(self, ns_name, field):
+        self._logger.debug("")
+        nsr = self.get(ns_name)
+        print(yaml.safe_dump(nsr))
+        if nsr is None:
+            raise NotFound("failed to retrieve ns {}".format(ns_name))
+
+        if field in nsr:
+            return nsr[field]
+
+        raise NotFound("failed to find {} in ns {}".format(field, ns_name))
+
+    def heal(
+        self,
+        ns_name,
+        heal_dict,
+        wait=False,
+        timeout=None,
+    ):
+        """Heals a NS"""
+        self._logger.debug("")
+        self._client.get_token()
+        try:
+            op_data = heal_dict
+            if timeout:
+                op_data["timeout_ns_heal"] = timeout
+            op_id = self.exec_op(ns_name, op_name="heal", op_data=op_data, wait=wait)
+            print(str(op_id))
+        except ClientException as exc:
+            message = "failed to heal ns {}:\nerror:\n{}".format(ns_name, str(exc))
+            raise ClientException(message)