// ensureGroup returns the security group with name and perms.
// If a group with name does not exist, one will be created.
// If it exists, its permissions are set to perms.
func (e *environ) ensureGroup(name string, rules []nova.RuleInfo) (nova.SecurityGroup, error) {
novaClient := e.nova()
// First attempt to look up an existing group by name.
group, err := novaClient.SecurityGroupByName(name)
if err == nil {
// Group exists, so assume it is correctly set up and return it.
return *group, nil
}
// Doesn't exist, so try and create it.
group, err = novaClient.CreateSecurityGroup(name, "juju group")
if err != nil {
if !gooseerrors.IsDuplicateValue(err) {
return zeroGroup, err
} else {
// We just tried to create a duplicate group, so load the existing group.
group, err = novaClient.SecurityGroupByName(name)
if err != nil {
return zeroGroup, err
}
return *group, nil
}
}
// The new group is created so now add the rules.
group.Rules = make([]nova.SecurityGroupRule, len(rules))
for i, rule := range rules {
rule.ParentGroupId = group.Id
groupRule, err := novaClient.CreateSecurityGroupRule(rule)
if err != nil && !gooseerrors.IsDuplicateValue(err) {
return zeroGroup, err
}
group.Rules[i] = *groupRule
}
return *group, nil
}
// ensureGroup returns the security group with name and perms.
// If a group with name does not exist, one will be created.
// If it exists, its permissions are set to perms.
func (e *environ) ensureGroup(name string, rules []nova.RuleInfo) (nova.SecurityGroup, error) {
nova := e.nova()
group, err := nova.CreateSecurityGroup(name, "juju group")
if err != nil {
if !gooseerrors.IsDuplicateValue(err) {
return zeroGroup, err
} else {
// We just tried to create a duplicate group, so load the existing group.
group, err = nova.SecurityGroupByName(name)
if err != nil {
return zeroGroup, err
}
}
}
// The group is created so now add the rules.
for _, rule := range rules {
rule.ParentGroupId = group.Id
_, err := nova.CreateSecurityGroupRule(rule)
if err != nil && !gooseerrors.IsDuplicateValue(err) {
return zeroGroup, err
}
}
return *group, nil
}