Release v0.1.0

vendor/github.com/btcsuite/btcwallet/walletdb/error.go

@@ -0,0 +1,80 @@
+// Copyright (c) 2014 The btcsuite developers
+// Use of this source code is governed by an ISC
+// license that can be found in the LICENSE file.
+
+package walletdb
+
+import (
+	"errors"
+)
+
+// Errors that can occur during driver registration.
+var (
+	// ErrDbTypeRegistered is returned when two different database drivers
+	// attempt to register with the name database type.
+	ErrDbTypeRegistered = errors.New("database type already registered")
+)
+
+// Errors that the various database functions may return.
+var (
+	// ErrDbUnknownType is returned when there is no driver registered for
+	// the specified database type.
+	ErrDbUnknownType = errors.New("unknown database type")
+
+	// ErrDbDoesNotExist is returned when open is called for a database that
+	// does not exist.
+	ErrDbDoesNotExist = errors.New("database does not exist")
+
+	// ErrDbExists is returned when create is called for a database that
+	// already exists.
+	ErrDbExists = errors.New("database already exists")
+
+	// ErrDbNotOpen is returned when a database instance is accessed before
+	// it is opened or after it is closed.
+	ErrDbNotOpen = errors.New("database not open")
+
+	// ErrDbAlreadyOpen is returned when open is called on a database that
+	// is already open.
+	ErrDbAlreadyOpen = errors.New("database already open")
+
+	// ErrInvalid is returned if the specified database is not valid.
+	ErrInvalid = errors.New("invalid database")
+)
+
+// Errors that can occur when beginning or committing a transaction.
+var (
+	// ErrTxClosed is returned when attempting to commit or rollback a
+	// transaction that has already had one of those operations performed.
+	ErrTxClosed = errors.New("tx closed")
+
+	// ErrTxNotWritable is returned when an operation that requires write
+	// access to the database is attempted against a read-only transaction.
+	ErrTxNotWritable = errors.New("tx not writable")
+)
+
+// Errors that can occur when putting or deleting a value or bucket.
+var (
+	// ErrBucketNotFound is returned when trying to access a bucket that has
+	// not been created yet.
+	ErrBucketNotFound = errors.New("bucket not found")
+
+	// ErrBucketExists is returned when creating a bucket that already exists.
+	ErrBucketExists = errors.New("bucket already exists")
+
+	// ErrBucketNameRequired is returned when creating a bucket with a blank name.
+	ErrBucketNameRequired = errors.New("bucket name required")
+
+	// ErrKeyRequired is returned when inserting a zero-length key.
+	ErrKeyRequired = errors.New("key required")
+
+	// ErrKeyTooLarge is returned when inserting a key that is larger than MaxKeySize.
+	ErrKeyTooLarge = errors.New("key too large")
+
+	// ErrValueTooLarge is returned when inserting a value that is larger than MaxValueSize.
+	ErrValueTooLarge = errors.New("value too large")
+
+	// ErrIncompatibleValue is returned when trying create or delete a
+	// bucket on an existing non-bucket key or when trying to create or
+	// delete a non-bucket key on an existing bucket key.
+	ErrIncompatibleValue = errors.New("incompatible value")
+)