channeldb/migration_01_to_11: remove unused code

channeldb/migration_01_to_11/error.go

@@ -1,55 +1,23 @@
 package migration_01_to_11
 
 import (
-	"errors"
 	"fmt"
 )
 
 var (
-	// ErrNoChanDBExists is returned when a channel bucket hasn't been
-	// created.
-	ErrNoChanDBExists = fmt.Errorf("channel db has not yet been created")
 
 	// ErrDBReversion is returned when detecting an attempt to revert to a
 	// prior database version.
 	ErrDBReversion = fmt.Errorf("channel db cannot revert to prior version")
 
-	// ErrLinkNodesNotFound is returned when node info bucket hasn't been
-	// created.
-	ErrLinkNodesNotFound = fmt.Errorf("no link nodes exist")
-
-	// ErrNoActiveChannels  is returned when there is no active (open)
-	// channels within the database.
-	ErrNoActiveChannels = fmt.Errorf("no active channels exist")
-
-	// ErrNoPastDeltas is returned when the channel delta bucket hasn't been
-	// created.
-	ErrNoPastDeltas = fmt.Errorf("channel has no recorded deltas")
-
-	// ErrInvoiceNotFound is returned when a targeted invoice can't be
-	// found.
-	ErrInvoiceNotFound = fmt.Errorf("unable to locate invoice")
-
 	// ErrNoInvoicesCreated is returned when we don't have invoices in
 	// our database to return.
 	ErrNoInvoicesCreated = fmt.Errorf("there are no existing invoices")
 
-	// ErrDuplicateInvoice is returned when an invoice with the target
-	// payment hash already exists.
-	ErrDuplicateInvoice = fmt.Errorf("invoice with payment hash already exists")
-
 	// ErrNoPaymentsCreated is returned when bucket of payments hasn't been
 	// created.
 	ErrNoPaymentsCreated = fmt.Errorf("there are no existing payments")
 
-	// ErrNodeNotFound is returned when node bucket exists, but node with
-	// specific identity can't be found.
-	ErrNodeNotFound = fmt.Errorf("link node with target identity not found")
-
-	// ErrChannelNotFound is returned when we attempt to locate a channel
-	// for a specific chain, but it is not found.
-	ErrChannelNotFound = fmt.Errorf("channel not found")
-
 	// ErrMetaNotFound is returned when meta bucket hasn't been
 	// created.
 	ErrMetaNotFound = fmt.Errorf("unable to locate meta information")
@@ -58,22 +26,11 @@ var (
 	// graph doesn't exist.
 	ErrGraphNotFound = fmt.Errorf("graph bucket not initialized")
 
-	// ErrGraphNeverPruned is returned when graph was never pruned.
-	ErrGraphNeverPruned = fmt.Errorf("graph never pruned")
-
 	// ErrSourceNodeNotSet is returned if the source node of the graph
 	// hasn't been added The source node is the center node within a
 	// star-graph.
 	ErrSourceNodeNotSet = fmt.Errorf("source node does not exist")
 
-	// ErrGraphNodesNotFound is returned in case none of the nodes has
-	// been added in graph node bucket.
-	ErrGraphNodesNotFound = fmt.Errorf("no graph nodes exist")
-
-	// ErrGraphNoEdgesFound is returned in case of none of the channel/edges
-	// has been added in graph edge bucket.
-	ErrGraphNoEdgesFound = fmt.Errorf("no graph edges exist")
-
 	// ErrGraphNodeNotFound is returned when we're unable to find the target
 	// node.
 	ErrGraphNodeNotFound = fmt.Errorf("unable to find node")
@@ -82,17 +39,6 @@ var (
 	// can't be found.
 	ErrEdgeNotFound = fmt.Errorf("edge not found")
 
-	// ErrZombieEdge is an error returned when we attempt to look up an edge
-	// but it is marked as a zombie within the zombie index.
-	ErrZombieEdge = errors.New("edge marked as zombie")
-
-	// ErrEdgeAlreadyExist is returned when edge with specific
-	// channel id can't be added because it already exist.
-	ErrEdgeAlreadyExist = fmt.Errorf("edge already exist")
-
-	// ErrNodeAliasNotFound is returned when alias for node can't be found.
-	ErrNodeAliasNotFound = fmt.Errorf("alias for node not found")
-
 	// ErrUnknownAddressType is returned when a node's addressType is not
 	// an expected value.
 	ErrUnknownAddressType = fmt.Errorf("address type cannot be resolved")
@@ -101,20 +47,11 @@ var (
 	// channels it has closed, but it hasn't yet closed any channels.
 	ErrNoClosedChannels = fmt.Errorf("no channel have been closed yet")
 
-	// ErrNoForwardingEvents is returned in the case that a query fails due
-	// to the log not having any recorded events.
-	ErrNoForwardingEvents = fmt.Errorf("no recorded forwarding events")
-
 	// ErrEdgePolicyOptionalFieldNotFound is an error returned if a channel
 	// policy field is not found in the db even though its message flags
 	// indicate it should be.
 	ErrEdgePolicyOptionalFieldNotFound = fmt.Errorf("optional field not " +
 		"present")
-
-	// ErrChanAlreadyExists is return when the caller attempts to create a
-	// channel with a channel point that is already present in the
-	// database.
-	ErrChanAlreadyExists = fmt.Errorf("channel already exists")
 )
 
 // ErrTooManyExtraOpaqueBytes creates an error which should be returned if the