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from irods.models import Resource
from irods.manager import Manager
from irods.message import GeneralAdminRequest, iRODSMessage
from irods.exception import ResourceDoesNotExist, NoResultFound, OperationNotSupported
from irods.api_number import api_number
from irods.resource import iRODSResource
import logging
logger = logging.getLogger(__name__)
class ResourceManager(Manager):
@staticmethod
def serialize(context):
if isinstance(context, dict):
return ";".join(
"{}={}".format(key, value) for (key, value) in list(context.items())
)
return context
def get(self, name, zone=""):
query = self.sess.query(Resource).filter(Resource.name == name)
if len(zone) > 0:
query = query.filter(Resource.zone_name == zone)
try:
result = query.one()
except NoResultFound:
raise ResourceDoesNotExist()
return iRODSResource(self, result)
def create(
self,
name,
resource_type,
host="EMPTY_RESC_HOST",
path="EMPTY_RESC_PATH",
context="",
zone="",
resource_class="",
):
with self.sess.pool.get_connection() as conn:
# check server version
if conn.server_version < (4, 0, 0):
# make resource, iRODS 3 style
message_body = GeneralAdminRequest(
"add",
"resource",
name,
resource_type,
resource_class,
host,
path,
zone,
)
else:
message_body = GeneralAdminRequest(
"add",
"resource",
name,
resource_type,
host + ":" + path,
self.serialize(context),
zone,
)
request = iRODSMessage(
"RODS_API_REQ",
msg=message_body,
int_info=api_number["GENERAL_ADMIN_AN"],
)
conn.send(request)
response = conn.recv()
self.sess.cleanup()
# close connections to get new agents with up to
# date resource manager
logger.debug(response.int_info)
return self.get(name, zone)
def remove(self, name, test=False):
if test:
mode = "--dryrun"
else:
mode = ""
message_body = GeneralAdminRequest("rm", "resource", name, mode)
request = iRODSMessage(
"RODS_API_REQ", msg=message_body, int_info=api_number["GENERAL_ADMIN_AN"]
)
with self.sess.pool.get_connection() as conn:
conn.send(request)
response = conn.recv()
self.sess.cleanup()
# close connections to get new agents with up to
# date resource manager
logger.debug(response.int_info)
def modify(self, name, attribute, value):
with self.sess.pool.get_connection() as conn:
message_body = GeneralAdminRequest(
"modify", "resource", name, attribute, self.serialize(value)
)
request = iRODSMessage(
"RODS_API_REQ",
msg=message_body,
int_info=api_number["GENERAL_ADMIN_AN"],
)
conn.send(request)
response = conn.recv()
self.sess.cleanup()
logger.debug(response.int_info)
return self.get(name)
def add_child(self, parent, child, context=""):
with self.sess.pool.get_connection() as conn:
# check server version
if conn.server_version < (4, 0, 0):
# No resource hierarchies before iRODS 4
raise OperationNotSupported
message_body = GeneralAdminRequest(
"add", "childtoresc", parent, child, context
)
request = iRODSMessage(
"RODS_API_REQ",
msg=message_body,
int_info=api_number["GENERAL_ADMIN_AN"],
)
conn.send(request)
response = conn.recv()
self.sess.cleanup()
# close connections to get new agents with up to
# date resource manager
logger.debug(response.int_info)
def remove_child(self, parent, child):
with self.sess.pool.get_connection() as conn:
# check server version
if conn.server_version < (4, 0, 0):
# No resource hierarchies before iRODS 4
raise OperationNotSupported
message_body = GeneralAdminRequest("rm", "childfromresc", parent, child)
request = iRODSMessage(
"RODS_API_REQ",
msg=message_body,
int_info=api_number["GENERAL_ADMIN_AN"],
)
conn.send(request)
response = conn.recv()
self.sess.cleanup()
# close connections to get new agents with up to
# date resource manager
logger.debug(response.int_info)
|
