metadata

const (
	// LabelAppName is the standard label key for the application name.
	LabelAppName = "app.kubernetes.io/name"

	// LabelAppInstance is the standard label key for the unique instance name.
	LabelAppInstance = "app.kubernetes.io/instance"

	// LabelAppVersion is the standard label key for the application version.
	LabelAppVersion = "app.kubernetes.io/version"

	// LabelAppComponent is the standard label key for the component within the
	// application.
	LabelAppComponent = "app.kubernetes.io/component"

	// LabelAppPartOf is the standard label key for the name of a higher level
	// application this one is part of.
	LabelAppPartOf = "app.kubernetes.io/part-of"

	// LabelAppManagedBy is the standard label key for the tool managing the
	// resource.
	LabelAppManagedBy = "app.kubernetes.io/managed-by"
)

const (
	// AppNameMultigres is the fixed application name for all Multigres resources.
	AppNameMultigres = "multigres"

	// ManagedByMultigres identifies the operator managing these resources.
	ManagedByMultigres = "multigres-operator"
)

const (
	// ComponentMultiAdmin identifies the multiadmin component.
	ComponentMultiAdmin = "multiadmin"

	// ComponentMultiAdminWeb identifies the multiadmin-web component.
	ComponentMultiAdminWeb = "multiadmin-web"

	// ComponentMultiGateway identifies the multigateway component.
	ComponentMultiGateway = "multigateway"

	// ComponentGlobalTopo identifies the global-topo component.
	ComponentGlobalTopo = "global-topo"

	// ComponentCell identifies the cell component.
	ComponentCell = "cell"

	// ComponentShard identifies the shard component.
	ComponentShard = "shard"

	// ComponentTableGroup identifies the table group component.
	ComponentTableGroup = "tablegroup"
)

const (
	// LabelMultigresCell identifies which cell a resource belongs to.
	LabelMultigresCell = "multigres.com/cell"

	// LabelMultigresCluster identifies which cluster a resource belongs to.
	LabelMultigresCluster = "multigres.com/cluster"

	// LabelMultigresShard identifies which shard a resource belongs to.
	LabelMultigresShard = "multigres.com/shard"

	// LabelMultigresDatabase identifies which database a resource belongs to.
	LabelMultigresDatabase = "multigres.com/database"

	// LabelMultigresTableGroup identifies which table group a resource belongs to.
	LabelMultigresTableGroup = "multigres.com/tablegroup"

	// LabelMultigresPool identifies which pool a resource belongs to.
	LabelMultigresPool = "multigres.com/pool"

	// LabelMultigresZone identifies which zone a resource belongs to.
	LabelMultigresZone = "multigres.com/zone"

	// LabelMultigresRegion identifies which region a resource belongs to.
	LabelMultigresRegion = "multigres.com/region"

	// DefaultCellName is the default cell name when none is specified.
	DefaultCellName = "multigres-global-topo"

	// AnnotationSpecHash stores the hash of operator-managed pod spec fields.
	AnnotationSpecHash = "multigres.com/spec-hash"

	// AnnotationPostgresConfigHash stores the SHA-256 hash of the referenced
	// postgres config ConfigMap data. Changes to the ConfigMap content produce
	// a different hash, which changes the spec-hash and triggers a rolling update.
	AnnotationPostgresConfigHash = "multigres.com/postgres-config-hash"

	// AnnotationDrainState is used to coordinate graceful scale down between
	// the resource-handler (Kubernetes) and data-handler (etcd).
	AnnotationDrainState = "drain.multigres.com/state"

	// DrainStateRequested indicates the resource-handler wants this pod removed.
	DrainStateRequested = "requested"
	// DrainStateDraining indicates the data-handler is removing the pod from synchronous standby.
	DrainStateDraining = "draining"
	// DrainStateAcknowledged indicates the data-handler verified removal from synchronous standby.
	DrainStateAcknowledged = "acknowledged"
	// DrainStateReadyForDeletion indicates the data-handler unregistered the pod from etcd.
	DrainStateReadyForDeletion = "ready-for-deletion"

	// AnnotationDrainRequestedAt stores the RFC3339 timestamp of when the drain
	// was first requested. Used to detect failover timeouts.
	AnnotationDrainRequestedAt = "drain.multigres.com/requested-at"

	// LabelPodRole reflects the pod's topology role (e.g. "DRAINED").
	// Set by the resource-handler when the topology store reports a notable role.
	// Used as the durable signal for DRAINED PVC cleanup, since PodRoles may be
	// cleared by the data-handler during drain before cleanup runs.
	LabelPodRole = "multigres.com/role"
)

const (
	// LabelMultigresCellTemplate identifies which cell template was used for
	// the given resource. This is needed for the operator to efficiently find
	// all the relevant resources using the CellTemplate.
	LabelMultigresCellTemplate = "multigres.com/cell-template"

	// LabelMultigresShardTemplate identifies which shard template was used for
	// the given resource. This is needed for the operator to efficiently find
	// all the relevant resources using the ShardTemplate.
	LabelMultigresShardTemplate = "multigres.com/shard-template"
)

const (
	// LabelUsesCoreTemplate is set to "true" on clusters that reference any CoreTemplate.
	LabelUsesCoreTemplate = "multigres.com/uses-core-template"

	// LabelUsesCellTemplate is set to "true" on clusters that reference any CellTemplate.
	LabelUsesCellTemplate = "multigres.com/uses-cell-template"

	// LabelUsesShardTemplate is set to "true" on clusters that reference any ShardTemplate.
	LabelUsesShardTemplate = "multigres.com/uses-shard-template"
)