actionnode

const (

	// Ping checks a tablet is alive
	TABLET_ACTION_PING = "Ping"

	// Sleep will sleep for a duration (used for tests)
	TABLET_ACTION_SLEEP = "Sleep"

	// ExecuteHook will execute the provided hook remotely
	TABLET_ACTION_EXECUTE_HOOK = "ExecuteHook"

	// SetReadOnly makes the mysql instance read-only
	TABLET_ACTION_SET_RDONLY = "SetReadOnly"

	// SetReadWrite makes the mysql instance read-write
	TABLET_ACTION_SET_RDWR = "SetReadWrite"

	// ChangeType changes the type of the tablet
	TABLET_ACTION_CHANGE_TYPE = "ChangeType"

	// Scrap scraps the live running tablet
	TABLET_ACTION_SCRAP = "Scrap"

	// DemoteMaster tells the current master it's about to not be a master
	// any more, and should go read-only.
	TABLET_ACTION_DEMOTE_MASTER = "DemoteMaster"

	// PromoteSlave tells the tablet it is going to be the master.
	TABLET_ACTION_PROMOTE_SLAVE = "PromoteSlave"

	// SlaveWasPromoted tells a tablet this previously slave
	// tablet is now the master. The tablet will update its
	// own topology record.
	TABLET_ACTION_SLAVE_WAS_PROMOTED = "SlaveWasPromoted"

	// RestartSlave tells the remote tablet it has a new master.
	TABLET_ACTION_RESTART_SLAVE = "RestartSlave"

	// SlaveWasRestarted tells a tablet the mysql master was changed.
	// The tablet will check it is indeed the case, and update its own
	// topology record.
	TABLET_ACTION_SLAVE_WAS_RESTARTED = "SlaveWasRestarted"

	// BreakSlaves will tinker with the replication stream in a way
	// that will stop all the slaves.
	TABLET_ACTION_BREAK_SLAVES = "BreakSlaves"

	// StopSlave will stop MySQL replication.
	TABLET_ACTION_STOP_SLAVE = "StopSlave"

	// StopSlave will stop MySQL replication after it reaches a
	// minimum point.
	TABLET_ACTION_STOP_SLAVE_MINIMUM = "StopSlaveMinimum"

	// StartSlave will start MySQL replication.
	TABLET_ACTION_START_SLAVE = "StartSlave"

	// TabletExternallyReparented is sent directly to the new master
	// tablet when it becomes the master. It is functionnaly equivalent
	// to calling "ShardExternallyReparented" on the topology.
	TABLET_ACTION_EXTERNALLY_REPARENTED = "TabletExternallyReparented"

	// MasterPosition returns the current master position
	TABLET_ACTION_MASTER_POSITION = "MasterPosition"

	// ReparentPosition returns the data for a slave to use to reparent
	// to the target tablet at the given position.
	TABLET_ACTION_REPARENT_POSITION = "ReparentPosition"

	// SlaveStatus returns the current slave status
	TABLET_ACTION_SLAVE_STATUS = "SlaveStatus"

	// WaitSlavePosition waits until the slave reaches a
	// replication position in MySQL replication
	TABLET_ACTION_WAIT_SLAVE_POSITION = "WaitSlavePosition"

	// WaitBlpPosition waits until the slave reaches a
	// replication position in filtered replication
	TABLET_ACTION_WAIT_BLP_POSITION = "WaitBlpPosition"

	// Stop and Start filtered replication
	TABLET_ACTION_STOP_BLP  = "StopBlp"
	TABLET_ACTION_START_BLP = "StartBlp"

	// RunBlpUntil will run filtered replication until it reaches
	// the provided stop position.
	TABLET_ACTION_RUN_BLP_UNTIL = "RunBlpUntil"

	// GetSchema returns the tablet current schema.
	TABLET_ACTION_GET_SCHEMA = "GetSchema"

	// RefreshState tells the tablet to refresh its tablet record from
	// the topo server.
	TABLET_ACTION_REFRESH_STATE = "RefreshState"

	// RunHealthCheck tells the tablet to refresh its tablet record from
	// the topo server.
	TABLET_ACTION_RUN_HEALTH_CHECK = "RunHealthCheck"

	// ReloadSchema tells the tablet to reload its schema.
	TABLET_ACTION_RELOAD_SCHEMA = "ReloadSchema"

	// PreflightSchema will check a schema change works
	TABLET_ACTION_PREFLIGHT_SCHEMA = "PreflightSchema"

	// ApplySchema will actually apply the schema change
	TABLET_ACTION_APPLY_SCHEMA = "ApplySchema"

	// ExecuteFetch uses the DBA connection pool to run queries.
	TABLET_ACTION_EXECUTE_FETCH = "ExecuteFetch"

	// GetPermissions returns the mysql permissions set
	TABLET_ACTION_GET_PERMISSIONS = "GetPermissions"

	// GetSlaves returns the current set of mysql replication slaves.
	TABLET_ACTION_GET_SLAVES = "GetSlaves"

	// Snapshot takes a db snapshot
	TABLET_ACTION_SNAPSHOT = "Snapshot"

	// SnapshotSourceEnd restarts the mysql server
	TABLET_ACTION_SNAPSHOT_SOURCE_END = "SnapshotSourceEnd"

	// ReserveForRestore will prepare a server for restore
	TABLET_ACTION_RESERVE_FOR_RESTORE = "ReserveForRestore"

	// Restore will restore a backup
	TABLET_ACTION_RESTORE = "Restore"

	SHARD_ACTION_REPARENT              = "ReparentShard"
	SHARD_ACTION_EXTERNALLY_REPARENTED = "ShardExternallyReparented"
	// Recompute derived shard-wise data
	SHARD_ACTION_REBUILD = "RebuildShard"
	// Generic read lock for inexpensive shard-wide actions.
	SHARD_ACTION_CHECK = "CheckShard"
	// Apply a schema change on an entire shard
	SHARD_ACTION_APPLY_SCHEMA = "ApplySchemaShard"
	// Changes the ServedTypes inside a shard
	SHARD_ACTION_SET_SERVED_TYPES = "SetShardServedTypes"
	// Migrate served types from one shard to another
	SHARD_ACTION_MIGRATE_SERVED_TYPES = "MigrateServedTypes"
	// Update the Shard object (Cells, ...)
	SHARD_ACTION_UPDATE_SHARD = "UpdateShard"

	KEYSPACE_ACTION_REBUILD             = "RebuildKeyspace"
	KEYSPACE_ACTION_APPLY_SCHEMA        = "ApplySchemaKeyspace"
	KEYSPACE_ACTION_SET_SHARDING_INFO   = "SetKeyspaceShardingInfo"
	KEYSPACE_ACTION_MIGRATE_SERVED_FROM = "MigrateServedFrom"
	KEYSPACE_ACTION_SET_SERVED_FROM     = "SetKeyspaceServedFrom"

	SRV_SHARD_ACTION_REBUILD = "RebuildSrvShard"

	ACTION_STATE_QUEUED  = ActionState("")        // All actions are queued initially
	ACTION_STATE_RUNNING = ActionState("Running") // Running inside vtaction process
	ACTION_STATE_FAILED  = ActionState("Failed")  // Ended with a failure
	ACTION_STATE_DONE    = ActionState("Done")    // Ended with no failure
)