| /* |
| * Copyright 2017 Dgraph Labs, Inc. and Contributors |
| * |
| * 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 badger |
| |
| import ( |
| "math" |
| |
| "github.com/pkg/errors" |
| ) |
| |
| const ( |
| // ValueThresholdLimit is the maximum permissible value of opt.ValueThreshold. |
| ValueThresholdLimit = math.MaxUint16 - 16 + 1 |
| ) |
| |
| var ( |
| // ErrValueLogSize is returned when opt.ValueLogFileSize option is not within the valid |
| // range. |
| ErrValueLogSize = errors.New("Invalid ValueLogFileSize, must be in range [1MB, 2GB)") |
| |
| // ErrKeyNotFound is returned when key isn't found on a txn.Get. |
| ErrKeyNotFound = errors.New("Key not found") |
| |
| // ErrTxnTooBig is returned if too many writes are fit into a single transaction. |
| ErrTxnTooBig = errors.New("Txn is too big to fit into one request") |
| |
| // ErrConflict is returned when a transaction conflicts with another transaction. This can |
| // happen if the read rows had been updated concurrently by another transaction. |
| ErrConflict = errors.New("Transaction Conflict. Please retry") |
| |
| // ErrReadOnlyTxn is returned if an update function is called on a read-only transaction. |
| ErrReadOnlyTxn = errors.New("No sets or deletes are allowed in a read-only transaction") |
| |
| // ErrDiscardedTxn is returned if a previously discarded transaction is re-used. |
| ErrDiscardedTxn = errors.New("This transaction has been discarded. Create a new one") |
| |
| // ErrEmptyKey is returned if an empty key is passed on an update function. |
| ErrEmptyKey = errors.New("Key cannot be empty") |
| |
| // ErrInvalidKey is returned if the key has a special !badger! prefix, |
| // reserved for internal usage. |
| ErrInvalidKey = errors.New("Key is using a reserved !badger! prefix") |
| |
| // ErrThresholdZero is returned if threshold is set to zero, and value log GC is called. |
| // In such a case, GC can't be run. |
| ErrThresholdZero = errors.New( |
| "Value log GC can't run because threshold is set to zero") |
| |
| // ErrNoRewrite is returned if a call for value log GC doesn't result in a log file rewrite. |
| ErrNoRewrite = errors.New( |
| "Value log GC attempt didn't result in any cleanup") |
| |
| // ErrRejected is returned if a value log GC is called either while another GC is running, or |
| // after DB::Close has been called. |
| ErrRejected = errors.New("Value log GC request rejected") |
| |
| // ErrInvalidRequest is returned if the user request is invalid. |
| ErrInvalidRequest = errors.New("Invalid request") |
| |
| // ErrManagedTxn is returned if the user tries to use an API which isn't |
| // allowed due to external management of transactions, when using ManagedDB. |
| ErrManagedTxn = errors.New( |
| "Invalid API request. Not allowed to perform this action using ManagedDB") |
| |
| // ErrInvalidDump if a data dump made previously cannot be loaded into the database. |
| ErrInvalidDump = errors.New("Data dump cannot be read") |
| |
| // ErrZeroBandwidth is returned if the user passes in zero bandwidth for sequence. |
| ErrZeroBandwidth = errors.New("Bandwidth must be greater than zero") |
| |
| // ErrInvalidLoadingMode is returned when opt.ValueLogLoadingMode option is not |
| // within the valid range |
| ErrInvalidLoadingMode = errors.New("Invalid ValueLogLoadingMode, must be FileIO or MemoryMap") |
| |
| // ErrWindowsNotSupported is returned when opt.ReadOnly is used on Windows |
| ErrWindowsNotSupported = errors.New("Read-only mode is not supported on Windows") |
| |
| // ErrPlan9NotSupported is returned when opt.ReadOnly is used on Plan 9 |
| ErrPlan9NotSupported = errors.New("Read-only mode is not supported on Plan 9") |
| |
| // ErrTruncateNeeded is returned when the value log gets corrupt, and requires truncation of |
| // corrupt data to allow Badger to run properly. |
| ErrTruncateNeeded = errors.New( |
| "Log truncate required to run DB. This might result in data loss") |
| |
| // ErrBlockedWrites is returned if the user called DropAll. During the process of dropping all |
| // data from Badger, we stop accepting new writes, by returning this error. |
| ErrBlockedWrites = errors.New("Writes are blocked, possibly due to DropAll or Close") |
| |
| // ErrNilCallback is returned when subscriber's callback is nil. |
| ErrNilCallback = errors.New("Callback cannot be nil") |
| |
| // ErrEncryptionKeyMismatch is returned when the storage key is not |
| // matched with the key previously given. |
| ErrEncryptionKeyMismatch = errors.New("Encryption key mismatch") |
| |
| // ErrInvalidDataKeyID is returned if the datakey id is invalid. |
| ErrInvalidDataKeyID = errors.New("Invalid datakey id") |
| |
| // ErrInvalidEncryptionKey is returned if length of encryption keys is invalid. |
| ErrInvalidEncryptionKey = errors.New("Encryption key's length should be" + |
| "either 16, 24, or 32 bytes") |
| // ErrGCInMemoryMode is returned when db.RunValueLogGC is called in in-memory mode. |
| ErrGCInMemoryMode = errors.New("Cannot run value log GC when DB is opened in InMemory mode") |
| |
| // ErrDBClosed is returned when a get operation is performed after closing the DB. |
| ErrDBClosed = errors.New("DB Closed") |
| ) |