com.couchbase.client.deps.io.netty.buffer.ByteBuf.readableBytes()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中com.couchbase.client.deps.io.netty.buffer.ByteBuf.readableBytes()方法的一些代码示例，展示了ByteBuf.readableBytes()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ByteBuf.readableBytes()方法的具体详情如下：
包路径：com.couchbase.client.deps.io.netty.buffer.ByteBuf
类名称：ByteBuf
方法名：readableBytes

ByteBuf.readableBytes介绍

[英]Returns the number of readable bytes which is equal to (this.writerIndex - this.readerIndex).
[中]返回等于（this.writerIndex-this.readerIndex）的可读字节数。

代码示例

代码示例来源：origin: apache/nifi

public static String getStringContent(Object content) {
  if (content instanceof String) {
    return (String) content;
  } else if (content instanceof byte[]) {
    return new String((byte[]) content, StandardCharsets.UTF_8);
  } else if (content instanceof ByteBuf) {
    final ByteBuf byteBuf = (ByteBuf) content;
    byte[] bytes = new byte[byteBuf.readableBytes()];
    byteBuf.readBytes(bytes);
    byteBuf.release();
    return new String(bytes, StandardCharsets.UTF_8);
  }
  return content.toString();
}

代码示例来源：origin: apache/nifi

private <V> V deserialize(BinaryDocument doc, Deserializer<V> valueDeserializer) throws IOException {
  if (doc == null) {
    return null;
  }
  final ByteBuf byteBuf = doc.content();
  final byte[] bytes = new byte[byteBuf.readableBytes()];
  byteBuf.readBytes(bytes);
  byteBuf.release();
  return valueDeserializer.deserialize(bytes);
}

代码示例来源：origin: apache/incubator-gobblin

void verify(Bucket bucket)
   throws UnsupportedEncodingException {
  // verify
  System.out.println("Starting verification procedure");
  for (Map.Entry<String, byte[]> cacheEntry : verificationCache.entrySet()) {
   Object doc = bucket.get(cacheEntry.getKey(), recordClass);
   if (doc instanceof TupleDocument) {
    ByteBuf returnedBuf = (((TupleDocument) doc).content()).value1();
    byte[] returnedBytes = new byte[returnedBuf.readableBytes()];
    returnedBuf.getBytes(0, returnedBytes);
    Assert.assertEquals(returnedBytes, cacheEntry.getValue(), "Returned content for TupleDoc should be equal");
   } else if (doc instanceof RawJsonDocument) {
    byte[] returnedBytes = ((RawJsonDocument) doc).content().getBytes("UTF-8");
    Assert.assertEquals(returnedBytes, cacheEntry.getValue(), "Returned content for JsonDoc should be equal");
   } else {
    Assert.fail("Returned type was neither TupleDocument nor RawJsonDocument");
   }
  }
  System.out.println("Verification success!");
 }
}

代码示例来源：origin: apache/incubator-gobblin

void onWrite(AbstractDocument doc)
  throws UnsupportedEncodingException {
 recordClass = doc.getClass();
 if (doc instanceof TupleDocument) {
  ByteBuf outgoingBuf = (((TupleDocument) doc).content()).value1();
  byte[] outgoingBytes = new byte[outgoingBuf.readableBytes()];
  outgoingBuf.getBytes(0, outgoingBytes);
  verificationCache.put(doc.id(), outgoingBytes);
 } else if (doc instanceof RawJsonDocument) {
  verificationCache.put(doc.id(), ((RawJsonDocument) doc).content().getBytes("UTF-8"));
 } else {
  throw new UnsupportedOperationException("Can only support TupleDocument or RawJsonDocument at this time");
 }
}

代码示例来源：origin: apache/nifi

byteBuf.getBytes(byteBuf.readerIndex(), out, byteBuf.readableBytes());
  byteBuf.release();
};

代码示例来源：origin: apache/incubator-gobblin

@Test
public void testBasicConvert() throws Exception {
 Schema dataRecordSchema = SchemaBuilder.record("Data")
   .fields()
   .name("data").type().bytesType().noDefault()
   .name("flags").type().intType().noDefault()
   .endRecord();
 Schema schema = SchemaBuilder.record("TestRecord")
   .fields()
   .name("key").type().stringType().noDefault()
   .name("data").type(dataRecordSchema).noDefault()
   .endRecord();
 GenericData.Record testRecord = new GenericData.Record(schema);
 String testContent = "hello world";
 GenericData.Record dataRecord = new GenericData.Record(dataRecordSchema);
 dataRecord.put("data", ByteBuffer.wrap(testContent.getBytes(Charset.forName("UTF-8"))));
 dataRecord.put("flags", 0);
 testRecord.put("key", "hello");
 testRecord.put("data", dataRecord);
 Converter<Schema, String, GenericRecord, TupleDocument> recordConverter = new AvroToCouchbaseTupleConverter();
 TupleDocument returnDoc = recordConverter.convertRecord("", testRecord, null).iterator().next();
 byte[] returnedBytes = new byte[returnDoc.content().value1().readableBytes()];
 returnDoc.content().value1().readBytes(returnedBytes);
 Assert.assertEquals(returnedBytes, testContent.getBytes(Charset.forName("UTF-8")));
 int returnedFlags = returnDoc.content().value2();
 Assert.assertEquals(returnedFlags, 0);
}

代码示例来源：origin: apache/incubator-gobblin

TupleDocument returnDoc = writer.getBucket().get("hello", TupleDocument.class);
byte[] returnedBytes = new byte[returnDoc.content().value1().readableBytes()];
returnDoc.content().value1().readBytes(returnedBytes);
Assert.assertEquals(returnedBytes, testContent.getBytes(Charset.forName("UTF-8")));

代码示例来源：origin: com.couchbase.client/core-io

/**
 * Creates a new stream which reads data from the specified {@code buffer}
 * starting at the current {@code readerIndex} and ending at the current
 * {@code writerIndex}.
 * @param buffer The buffer which provides the content for this {@link InputStream}.
 * @param releaseOnClose {@code true} means that when {@link #close()} is called then {@link ByteBuf#release()} will
 *                       be called on {@code buffer}.
 */
public ByteBufInputStream(ByteBuf buffer, boolean releaseOnClose) {
  this(buffer, buffer.readableBytes(), releaseOnClose);
}

代码示例来源：origin: com.couchbase.client/core-io

private static long total(Object msg) {
  if (msg instanceof ByteBuf) {
    return ((ByteBuf) msg).readableBytes();
  }
  if (msg instanceof FileRegion) {
    return ((FileRegion) msg).count();
  }
  if (msg instanceof ByteBufHolder) {
    return ((ByteBufHolder) msg).content().readableBytes();
  }
  return -1;
}

代码示例来源：origin: com.couchbase.client/core-io

public void setValue(String value, int rank) {
  if (value == null) {
    throw new NullPointerException("value");
  }
  ByteBuf buf = Unpooled.copiedBuffer(value, charset);
  ByteBuf old = this.value.set(rank, buf);
  if (old != null) {
    size -= old.readableBytes();
    old.release();
  }
  size += buf.readableBytes();
}

代码示例来源：origin: com.couchbase.client/core-io

@Override
public int readableBytes() {
  if (terminated) {
    return buffer.readableBytes();
  } else {
    return Integer.MAX_VALUE - buffer.readerIndex();
  }
}

代码示例来源：origin: com.couchbase.client/core-io

private static long contentLength(Object msg) {
  if (msg instanceof HttpContent) {
    return ((HttpContent) msg).content().readableBytes();
  }
  if (msg instanceof ByteBuf) {
    return ((ByteBuf) msg).readableBytes();
  }
  if (msg instanceof FileRegion) {
    return ((FileRegion) msg).count();
  }
  throw new IllegalStateException("unexpected message type: " + StringUtil.simpleClassName(msg));
}

代码示例来源：origin: com.couchbase.client/core-io

@Override
public long skip(long bytes) throws IOException {
  int readable = buffer.readableBytes();
  if (readable < bytes) {
    bytes = readable;
  }
  buffer.readerIndex((int) (buffer.readerIndex() + bytes));
  return bytes;
}

代码示例来源：origin: com.couchbase.client/java-client

@Override
protected ByteArrayDocument doDecode(String id, ByteBuf content, long cas, int expiry, int flags,
  ResponseStatus status) throws Exception {
  if (!TranscoderUtils.hasBinaryFlags(flags)) {
    throw new TranscodingException("Flags (0x" + Integer.toHexString(flags) + ") indicate non-binary " +
      "document for id " + id + ", could not decode.");
  }
  byte[] data = new byte[content.readableBytes()];
  content.readBytes(data);
  return newDocument(id, expiry, data, cas);
}

代码示例来源：origin: com.couchbase.client/core-io

private void decodeNonJdkCompatible(ChannelHandlerContext ctx, ByteBuf in) {
  try {
    in.skipBytes(unwrap(ctx, in, in.readerIndex(), in.readableBytes()));
  } catch (Throwable cause) {
    handleUnwrapThrowable(ctx, cause);
  }
}

代码示例来源：origin: com.couchbase.client/core-io

private RawQueryResponse handleRawQueryResponse(boolean lastChunk, ChannelHandlerContext ctx) {
  if (!lastChunk) {
    return null;
  }
  ResponseStatus status = ResponseStatusConverter.fromHttp(responseHeader.getStatus().code());
  ByteBuf responseCopy = ctx.alloc().buffer(responseContent.readableBytes(), responseContent.readableBytes());
  responseCopy.writeBytes(responseContent);
  return new RawQueryResponse(status, currentRequest(), responseCopy,
      responseHeader.getStatus().code(),
      responseHeader.getStatus().reasonPhrase());
}

代码示例来源：origin: com.couchbase.client/core-io

private RawAnalyticsResponse handleRawAnalyticsResponse(boolean lastChunk, ChannelHandlerContext ctx) {
  if (!lastChunk) {
    return null;
  }
  ResponseStatus status = ResponseStatusConverter.fromHttp(responseHeader.getStatus().code());
  ByteBuf responseCopy = ctx.alloc().buffer(responseContent.readableBytes(), responseContent.readableBytes());
  responseCopy.writeBytes(responseContent);
  return new RawAnalyticsResponse(status, currentRequest(), responseCopy,
      responseHeader.getStatus().code(),
      responseHeader.getStatus().reasonPhrase());
}

代码示例来源：origin: com.couchbase.client/core-io

private RawQueryResponse handleRawQueryResponse(boolean lastChunk, ChannelHandlerContext ctx) {
  if (!lastChunk) {
    return null;
  }
  ResponseStatus status = ResponseStatusConverter.fromHttp(responseHeader.getStatus().code());
  ByteBuf responseCopy = ctx.alloc().buffer(responseContent.readableBytes(), responseContent.readableBytes());
  responseCopy.writeBytes(responseContent);
  cleanupQueryStates();
  return new RawQueryResponse(status, currentRequest(), responseCopy,
      responseHeader.getStatus().code(),
      responseHeader.getStatus().reasonPhrase());
}

代码示例来源：origin: com.couchbase.client/core-io

private static BinaryMemcacheRequest handleObserveSeqnoRequest(final ChannelHandlerContext ctx,
  final ObserveSeqnoRequest msg) {
  ByteBuf content = ctx.alloc().buffer();
  content.writeLong(msg.vbucketUUID());
  BinaryMemcacheRequest request = new DefaultFullBinaryMemcacheRequest(EMPTY_BYTES, Unpooled.EMPTY_BUFFER, content);
  request.setOpcode(OP_OBSERVE_SEQ);
  request.setTotalBodyLength(content.readableBytes());
  return request;
}

代码示例来源：origin: com.couchbase.client/core-io

private static BinaryMemcacheRequest handlePrependRequest(final PrependRequest msg) {
  byte[] key = msg.keyBytes();
  short keyLength = (short) key.length;
  BinaryMemcacheRequest request = new DefaultFullBinaryMemcacheRequest(key, Unpooled.EMPTY_BUFFER, msg.content());
  request.setOpcode(OP_PREPEND);
  request.setKeyLength(keyLength);
  request.setCAS(msg.cas());
  request.setTotalBodyLength(keyLength + msg.content().readableBytes());
  return request;
}

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