1 /* 2 * ==================================================================== 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * ==================================================================== 20 * 21 * This software consists of voluntary contributions made by many 22 * individuals on behalf of the Apache Software Foundation. For more 23 * information on the Apache Software Foundation, please see 24 * <http://www.apache.org/>. 25 * 26 */ 27 package org.apache.hc.core5.http2.frame; 28 29 /** 30 * Abstract HTTP/2 data frame. 31 * 32 * @since 5.0 33 * 34 * @param <T> frame payload representation. 35 */ 36 public abstract class Frame<T> { 37 38 private final int type; 39 private final int flags; 40 private final int streamId; 41 42 public Frame(final int type, final int flags, final int streamId) { 43 this.type = type; 44 this.flags = flags; 45 this.streamId = streamId; 46 } 47 48 public boolean isType(final FrameType type) { 49 return getType() == type.value; 50 } 51 52 public boolean isFlagSet(final FrameFlag flag) { 53 return (getFlags() & flag.value) != 0; 54 } 55 56 public int getType() { 57 return type; 58 } 59 60 public int getFlags() { 61 return flags; 62 } 63 64 public int getStreamId() { 65 return streamId; 66 } 67 68 public abstract T getPayload(); 69 70 @Override 71 public String toString() { 72 final StringBuilder sb = new StringBuilder("["); 73 sb.append("type=").append(type); 74 sb.append(", flags=").append(flags); 75 sb.append(", streamId=").append(streamId); 76 sb.append(", payoad=").append(getPayload()); 77 sb.append(']'); 78 return sb.toString(); 79 } 80 81 }