wvlet.airframe.msgpack.spi.MessageException.scala Maven / Gradle / Ivy

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/*
 * 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 wvlet.airframe.msgpack.spi

import java.math.BigInteger

/**
  * Base class for message pack errors
  */
class MessageException(val errorCode: ErrorCode, message: String = null, cause: Throwable = null)
    extends Exception(message, cause) {
  override def getMessage: String = {
    val s = new StringBuilder
    s.append(s"[${errorCode}]")
    if (message != null) {
      s.append(s" ${message}")
    }
    if (cause != null) {
      s.append(s", cause: ${cause.getMessage}")
    }
    s.result()
  }
}

case class InsufficientBufferException(currentPosition: Long, expectedLength: Long)
    extends MessageException(
      ErrorCode.INSUFFICIENT_BUFFER,
      s"Need at least ${expectedLength} more bytes. current cursor:${currentPosition}"
    )

/**
  * This error is thrown when the user tries to read an integer value using a smaller types. For example, calling
  * MessageUnpacker.unpackInt() for an integer value that is larger than Integer.MAX_VALUE will cause this exception.
  */
case class IntegerOverflowException(bigInteger: BigInteger)
    extends MessageException(ErrorCode.INTEGER_OVERFLOW, s"Too large integer: ${bigInteger}") {
  def getBigInteger = bigInteger
}
case class TooLargeMessageException(size: Long)
    extends MessageException(ErrorCode.TOO_LARGE_MESSAGE, s"Too large message size: ${size}")

object MessageException {
  def overflowU8(u8: Byte)    = new IntegerOverflowException(BigInteger.valueOf((u8 & 0xff).toLong))
  def overflowU16(u16: Short) = new IntegerOverflowException(BigInteger.valueOf((u16 & 0xffff).toLong))
  def overflowU32(u32: Int)   = new IntegerOverflowException(BigInteger.valueOf((u32 & 0xffffffff).toLong))
  def overflowU64(u64: Long)  = new IntegerOverflowException(BigInteger.valueOf(u64 + Long.MaxValue + 1L).setBit(63))

  def overflowI16(i16: Short) = new IntegerOverflowException(BigInteger.valueOf(i16.toLong))
  def overflowI32(i32: Int)   = new IntegerOverflowException(BigInteger.valueOf(i32.toLong))
  def overflowI64(i64: Long)  = new IntegerOverflowException(BigInteger.valueOf(i64))
  def overflow(b: BigInteger) = new IntegerOverflowException(b)

  def overflowU32Size(u32: Int) = new TooLargeMessageException(((u32 & 0x7fffffff) + 0x80000000L).toLong)
}