Documentation
¶
Index ¶
Constants ¶
This section is empty.
Variables ¶
var Policies = map[string]Policy{
"sync": &SyncPolicy{},
"upsert-only": &UpsertOnlyPolicy{},
}
Policies is a registry of available policies.
Functions ¶
This section is empty.
Types ¶
type Changes ¶
type Changes struct {
// Records that need to be created
Create []*endpoint.Endpoint
// Records that need to be updated (current data)
UpdateOld []*endpoint.Endpoint
// Records that need to be updated (desired data)
UpdateNew []*endpoint.Endpoint
// Records that need to be deleted
Delete []*endpoint.Endpoint
}
Changes holds lists of actions to be executed by dns providers
type ConflictResolver ¶ added in v0.5.0
type ConflictResolver interface {
ResolveCreate(candidates []*endpoint.Endpoint) *endpoint.Endpoint
ResolveUpdate(current *endpoint.Endpoint, candidates []*endpoint.Endpoint) *endpoint.Endpoint
}
ConflictResolver is used to make a decision in case of two or more different kubernetes resources are trying to acquire same DNS name
type PerResource ¶ added in v0.5.0
type PerResource struct{}
PerResource allows only one resource to own a given dns name
func (PerResource) ResolveCreate ¶ added in v0.5.0
func (s PerResource) ResolveCreate(candidates []*endpoint.Endpoint) *endpoint.Endpoint
ResolveCreate is invoked when dns name is not owned by any resource ResolveCreate takes "minimal" (string comparison of Target) endpoint to acquire the DNS record
func (PerResource) ResolveUpdate ¶ added in v0.5.0
func (s PerResource) ResolveUpdate(current *endpoint.Endpoint, candidates []*endpoint.Endpoint) *endpoint.Endpoint
ResolveUpdate is invoked when dns name is already owned by "current" endpoint ResolveUpdate uses "current" record as base and updates it accordingly with new version of same resource if it doesn't exist then pick min
type Plan ¶
type Plan struct {
// List of current records
Current []*endpoint.Endpoint
// List of desired records
Desired []*endpoint.Endpoint
// Policies under which the desired changes are calculated
Policies []Policy
// List of changes necessary to move towards desired state
// Populated after calling Calculate()
Changes *Changes
}
Plan can convert a list of desired and current records to a series of create, update and delete actions.
type Policy ¶ added in v0.3.0
type Policy interface {
Apply(changes *Changes) *Changes
}
Policy allows to apply different rules to a set of changes.
type SyncPolicy ¶ added in v0.3.0
type SyncPolicy struct{}
SyncPolicy allows for full synchronization of DNS records.
type UpsertOnlyPolicy ¶ added in v0.3.0
type UpsertOnlyPolicy struct{}
UpsertOnlyPolicy allows evrything but deleting DNS records.