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groupdetector.go
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groupdetector.go
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package groupdetector
import (
"github.com/openshift/origin/pkg/auth/ldaputil"
"github.com/openshift/origin/pkg/cmd/admin/groups/sync/interfaces"
)
// NewGroupBasedDetector returns an LDAPGroupDetector that determines group existence based on
// the presence of a first-class group entry in LDAP as found by an LDAPGroupGetter
func NewGroupBasedDetector(groupGetter interfaces.LDAPGroupGetter) interfaces.LDAPGroupDetector {
return &GroupBasedDetector{groupGetter: groupGetter}
}
// GroupBasedDetector is an LDAPGroupDetector that determines group existence based on
// the presence of a first-class group entry in LDAP as found by an LDAPGroupGetter
type GroupBasedDetector struct {
groupGetter interfaces.LDAPGroupGetter
}
func (l *GroupBasedDetector) Exists(ldapGroupUID string) (bool, error) {
group, err := l.groupGetter.GroupEntryFor(ldapGroupUID)
if ldaputil.IsQueryOutOfBoundsError(err) || ldaputil.IsEntryNotFoundError(err) || ldaputil.IsNoSuchObjectError(err) {
return false, nil
}
if err != nil {
return false, err
}
if group == nil {
return false, nil
}
return true, nil
}
// NewMemberBasedDetector returns an LDAPGroupDetector that determines group existence based on
// the presence of a non-zero number of first-class member entries in LDAP as found by an LDAPMemberExtractor
func NewMemberBasedDetector(memberExtractor interfaces.LDAPMemberExtractor) interfaces.LDAPGroupDetector {
return &MemberBasedDetector{memberExtractor: memberExtractor}
}
// MemberBasedDetector is an LDAPGroupDetector that determines group existence based on
// the presence of a non-zero number of first-class member entries in LDAP as found by an LDAPMemberExtractor
type MemberBasedDetector struct {
memberExtractor interfaces.LDAPMemberExtractor
}
func (l *MemberBasedDetector) Exists(ldapGrouUID string) (bool, error) {
members, err := l.memberExtractor.ExtractMembers(ldapGrouUID)
if ldaputil.IsQueryOutOfBoundsError(err) || ldaputil.IsEntryNotFoundError(err) || ldaputil.IsNoSuchObjectError(err) {
return false, nil
}
if err != nil {
return false, err
}
if len(members) == 0 {
return false, nil
}
return true, nil
}
// NewCompoundDetector returns an LDAPGroupDetector that subsumes some other LDAPGroupDetectors.
// This detector checks all subordinate detectors in order to determine if a group exists. If any of
// the subordinate detectors raise an error while being queried, the the search is abandoned and the
// error returned. All detectors must successfully determine existence for the compound detector to
// determine that the group exists.
func NewCompoundDetector(locators ...interfaces.LDAPGroupDetector) interfaces.LDAPGroupDetector {
return &CompoundDetector{locators: locators}
}
// CompoundDetector is an LDAPGroupDetector that subsumes some other LDAPGroupDetectors.
// This detector checks all subordinate detectors in order to determine if a group exists. If any of
// the subordinate detectors raise an error while being queried, the the search is abandoned and the
// error returned. All detectors must successfully determine existence for the compound detector to
// determine that the group exists.
type CompoundDetector struct {
locators []interfaces.LDAPGroupDetector
}
func (l *CompoundDetector) Exists(ldapGrouUID string) (bool, error) {
if len(l.locators) == 0 {
return false, nil
}
conclusion := true
for _, locator := range l.locators {
opinion, err := locator.Exists(ldapGrouUID)
if err != nil {
return false, err
}
conclusion = conclusion && opinion
}
return conclusion, nil
}