def create_pool(pool, user):
"""Creates pool"""
sp = ServerPool()
sp.identifier = pool.get('identifier')
sp.default_port = pool.get('default_port')
sp.environment_id = pool.get('environment')
sp.servicedownaction_id = _get_option_pool(
pool.get('servicedownaction').get('name'), 'ServiceDownAction')
sp.lb_method = pool.get('lb_method')
sp.default_limit = pool.get('default_limit')
healthcheck = _get_healthcheck(pool.get('healthcheck'))
sp.healthcheck = healthcheck
sp.pool_created = False
sp.save()
_create_pool_member(pool['server_pool_members'], sp)
# perms
groups_perm = pool.get('groups_permissions', [])
groups_perm += facade_usr.get_groups(pool.get('users_permissions', []))
groups = facade_usr.reduce_groups(groups_perm)
create_groups_permissions(groups, sp.id, user)
return sp
def save_server_pool(user, id, identifier, default_port, hc, env, balancing,
maxconn, id_pool_member, servicedownaction):
# Save Server pool
old_healthcheck = None
if id:
sp = ServerPool.objects.get(id=id)
# store old healthcheck,lb method and service-down-action
old_servicedownaction = sp.servicedownaction
old_identifier = sp.identifier
old_healthcheck = Healthcheck.objects.get(id=sp.healthcheck.id)
old_lb_method = sp.lb_method
old_maxconn = sp.default_limit
# validate change of environment
if sp.environment and sp.environment.id != env.id:
validate_change_of_environment(id_pool_member, sp)
# Pool already created, it is not possible to change Pool Identifier
if (old_identifier != identifier and sp.pool_created):
raise exceptions.CreatedPoolIdentifierException()
update_pool_fields(default_port, env, identifier, old_healthcheck,
old_lb_method, old_maxconn, sp, user)
update_pool_maxconn(maxconn, old_maxconn, sp, user)
apply_health_check(hc, old_healthcheck, sp, user)
update_load_balancing_method(balancing, old_lb_method, sp, user)
apply_service_down_action(old_servicedownaction, servicedownaction, sp,
user)
else:
sp = ServerPool(identifier=identifier,
default_port=default_port,
healthcheck=hc,
environment=env,
pool_created=False,
lb_method=balancing,
default_limit=maxconn,
servicedownaction=servicedownaction)
sp.save()
return sp, (old_healthcheck.id if old_healthcheck else None)
def save_server_pool(user, id, identifier, default_port, hc, env, balancing, maxconn, id_pool_member, servicedownaction):
# Save Server pool
old_healthcheck = None
if id:
sp = ServerPool.objects.get(id=id)
# store old healthcheck,lb method and service-down-action
old_servicedownaction = sp.servicedownaction
old_identifier = sp.identifier
old_healthcheck = Healthcheck.objects.get(id=sp.healthcheck.id)
old_lb_method = sp.lb_method
old_maxconn = sp.default_limit
# validate change of environment
if sp.environment and sp.environment.id != env.id:
validate_change_of_environment(id_pool_member, sp)
# Pool already created, it is not possible to change Pool Identifier
if(old_identifier != identifier and sp.pool_created):
raise exceptions.CreatedPoolIdentifierException()
update_pool_fields(default_port, env, identifier,
old_healthcheck, old_lb_method, old_maxconn, sp, user)
update_pool_maxconn(maxconn, old_maxconn, sp, user)
apply_health_check(hc, old_healthcheck, sp, user)
update_load_balancing_method(balancing, old_lb_method, sp, user)
apply_service_down_action(
old_servicedownaction, servicedownaction, sp, user)
else:
sp = ServerPool(identifier=identifier, default_port=default_port, healthcheck=hc,
environment=env, pool_created=False, lb_method=balancing, default_limit=maxconn, servicedownaction=servicedownaction)
sp.save()
return sp, (old_healthcheck.id if old_healthcheck else None)
def save_server_pool(user, id, identifier, default_port, hc, env, balancing, maxconn, id_pool_member, servicedownaction):
# Save Server pool
old_healthcheck = None
if id:
sp = ServerPool.objects.get(id=id)
# storage old healthcheck , lb method and service-down-action
old_servicedownaction = sp.servicedownaction
old_identifier = sp.identifier
old_healthcheck = Healthcheck.objects.get(id=sp.healthcheck.id)
old_lb_method = sp.lb_method
old_maxconn = sp.default_limit
#valid change environment
if sp.environment and sp.environment.id != env.id:
if sp.pool_created:
raise exceptions.UpdateEnvironmentPoolCreatedException()
del_smp = sp.serverpoolmember_set.exclude(id__in=id_pool_member)
vip = sp.vipporttopool_set.count()
if vip > 0:
raise exceptions.UpdateEnvironmentVIPException()
if len(del_smp) > 0:
raise exceptions.UpdateEnvironmentServerPoolMemberException()
#Pool already created, it is not possible to change Pool Identifier
if(old_identifier != identifier and sp.pool_created):
raise exceptions.CreatedPoolIdentifierException()
sp.default_port = default_port
sp.environment = env
sp.default_limit = old_maxconn
sp.healthcheck = old_healthcheck
sp.lb_method = old_lb_method
sp.identifier = identifier
sp.save(user)
sp.default_limit = maxconn
sp.save(user)
#If exists pool member, checks if all them have the same maxconn
#before changing default maxconn of pool
if(len(sp.serverpoolmember_set.all()) > 0):
if(old_maxconn != sp.default_limit and sp.pool_created):
for serverpoolmember in sp.serverpoolmember_set.all():
if serverpoolmember.limit != old_maxconn:
raise exceptions.ScriptAlterLimitPoolDiffMembersException()
else:
serverpoolmember.limit = maxconn
serverpoolmember.save(user)
transaction.commit()
command = settings.POOL_MANAGEMENT_LIMITS % (sp.id)
code, _, _ = exec_script(command)
if code != 0:
sp.default_limit = old_maxconn
for serverpoolmember in sp.serverpoolmember_set.all():
serverpoolmember.limit = old_maxconn
serverpoolmember.save(user)
sp.save(user)
transaction.commit()
raise exceptions.ScriptAlterLimitPoolException()
#Applies new healthcheck in pool
#Todo - new method
sp.healthcheck = hc
sp.save(user)
if(old_healthcheck.id != hc.id and sp.pool_created):
transaction.commit()
command = settings.POOL_HEALTHCHECK % (sp.id)
code, _, _ = exec_script(command)
if code != 0:
sp.healthcheck = old_healthcheck
sp.save(user)
transaction.commit()
raise exceptions.ScriptCreatePoolException()
#Applies new lb method in pool
#Todo - new method
sp.lb_method = balancing
sp.save(user)
if(old_lb_method != sp.lb_method and sp.pool_created):
transaction.commit()
command = settings.POOL_MANAGEMENT_LB_METHOD % (sp.id)
code, _, _ = exec_script(command)
if code != 0:
sp.lb_method = old_lb_method
sp.save(user)
transaction.commit()
raise exceptions.ScriptCreatePoolException()
#Applies new service-down-action in pool
#Todo - new method
sp.servicedownaction = servicedownaction
sp.save(user)
if(old_servicedownaction != sp.servicedownaction and sp.pool_created):
transaction.commit()
command = settings.POOL_SERVICEDOWNACTION % (sp.id)
code, _, _ = exec_script(command)
if code != 0:
sp.servicedownaction = old_servicedownaction
sp.save(user)
transaction.commit()
raise exceptions.ScriptAlterServiceDownActionException()
else:
sp = ServerPool(identifier=identifier, default_port=default_port, healthcheck=hc,
environment=env, pool_created=False, lb_method=balancing, default_limit=maxconn, servicedownaction=servicedownaction)
sp.save(user)
return sp, (old_healthcheck.id if old_healthcheck else None)
