/*

* Copyright 2018 The CovenantSQL Authors.

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

package sqlchain

import (

"errors"

)

var (

// ErrFieldConversion indicates an incompatible field conversion during data unmarshalling from

// a protobuf message, such as converting a non-digital string to a BigInt.

ErrFieldConversion = errors.New("incompatible field type conversion")

// ErrFieldLength indicates an unexpected array field length during data unmarshalling from a

// protobuf message. Since protobuf doesn't have fixed size array, we need to check the slice

// length before read it back from a slice field to a fixed size array field.

ErrFieldLength = errors.New("unexpected slice field length")

// ErrNilValue indicates that an unexpected but not fatal nil value is detected , hence return

// it as an error.

ErrNilValue = errors.New("unexpected nil value")

// ErrParentNotFound indicates an error failing to find parent node during a chain reloading.

ErrParentNotFound = errors.New("could not find parent node")

// ErrBlockExists indicates that a received block is already in the indexed.

ErrBlockExists = errors.New("block already exists")

// ErrInvalidBlock indicates an invalid block which does not extend the best chain while

// pushing new blocks.

ErrInvalidBlock = errors.New("invalid block")

// ErrBlockTimestampOutOfPeriod indicates a block producing timestamp verification failure.

ErrBlockTimestampOutOfPeriod = errors.New("block timestamp is out of producing period")

// ErrMultipleAckOfResponse indicates that multiple acknowledgements for a same query response

// is detected.

ErrMultipleAckOfResponse = errors.New("multiple acknowledgements of same response")

// ErrMultipleAckOfSeqNo indicates that multiple acknowledgements for a same sequence number is

// detected.

ErrMultipleAckOfSeqNo = errors.New("multiple acknowledgements of same sequence number")

// ErrQueryExpired indicates that a received query Response/Ack has expired.

ErrQueryExpired = errors.New("query has expired")

// ErrQueryNotCached indicates that a wanted query is not cached locally.

ErrQueryNotCached = errors.New("query is not cached locally")

// ErrQuerySignedByAnotherBlock indicates that a query is already signed in a known block

// during the verification of a new introduced block.

ErrQuerySignedByAnotherBlock = errors.New("query has been packed by another block")

// ErrCorruptedIndex indicates that a corrupted index item is detected.

ErrCorruptedIndex = errors.New("corrupted index item")

// ErrUnknownMuxRequest indicates that the a multiplexing request endpoint is not found.

ErrUnknownMuxRequest = errors.New("unknown multiplexing request")

// ErrUnknownProducer indicates that the block has an unknown producer.

ErrUnknownProducer = errors.New("unknown block producer")

// ErrInvalidProducer indicates that the block has an invalid producer.

ErrInvalidProducer = errors.New("invalid block producer")

// ErrUnavailableBillingRang indicates that the billing range is not abailable now.

ErrUnavailableBillingRang = errors.New("unabailable billing range")

// ErrHashNotMatch indicates that a message hash value doesn't match the original hash value

// given in its hash field.

ErrHashNotMatch = errors.New("hash value doesn't match")

// ErrMetaStateNotFound indicates that meta state not found in db.

ErrMetaStateNotFound = errors.New("meta state not found in db")

// ErrAckQueryNotFound indicates that an acknowledged query record is not found.

ErrAckQueryNotFound = errors.New("acknowledged query not found")

)