| | 1 | | /* |
| | 2 | | * Copyright 2017 Stanislav Muhametsin. All rights Reserved. |
| | 3 | | * |
| | 4 | | * Licensed under the Apache License, Version 2.0 (the "License"); |
| | 5 | | * you may not use this file except in compliance with the License. |
| | 6 | | * You may obtain a copy of the License at |
| | 7 | | * |
| | 8 | | * http://www.apache.org/licenses/LICENSE-2.0 |
| | 9 | | * |
| | 10 | | * Unless required by applicable law or agreed to in writing, software |
| | 11 | | * distributed under the License is distributed on an "AS IS" BASIS, |
| | 12 | | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| | 13 | | * implied. |
| | 14 | | * |
| | 15 | | * See the License for the specific language governing permissions and |
| | 16 | | * limitations under the License. |
| | 17 | | */ |
| | 18 | | using CBAM.Abstractions; |
| | 19 | | using CBAM.HTTP; |
| | 20 | | using System; |
| | 21 | | using System.Collections.Generic; |
| | 22 | | using System.Text; |
| | 23 | | using System.Threading.Tasks; |
| | 24 | | using UtilPack; |
| | 25 | |
|
| | 26 | | namespace CBAM.HTTP |
| | 27 | | { |
| | 28 | | /// <summary> |
| | 29 | | /// This interface extends <see cref="Connection{TStatement, TStatementInformation, TStatementCreationArgs, TEnumerab |
| | 30 | | /// </summary> |
| | 31 | | /// <typeparam name="TRequestMetaData">The type of metadata associated with each request, used in identifying the req |
| | 32 | | public interface HTTPConnection<TRequestMetaData> : Connection<HTTPStatement<TRequestMetaData>, HTTPStatementInformat |
| | 33 | | { |
| | 34 | | /// <summary> |
| | 35 | | /// Gets the HTTP protocol version used by this <see cref="HTTPConnection{TRequestMetaData}"/>. |
| | 36 | | /// </summary> |
| | 37 | | String ProtocolVersion { get; } |
| | 38 | | } |
| | 39 | |
|
| | 40 | | /// <summary> |
| | 41 | | /// This interface extends <see cref="ConnectionVendorFunctionality{TStatement, TStatementCreationArgs}"/> to provide |
| | 42 | | /// Currently, there are none, but there might be some in the future. |
| | 43 | | /// </summary> |
| | 44 | | /// <typeparam name="TRequestMetaData">The type of metadata associated with each request, used in identifying the req |
| | 45 | | public interface HTTPConnectionVendorFunctionality<TRequestMetaData> : ConnectionVendorFunctionality<HTTPStatement<TR |
| | 46 | | { |
| | 47 | |
|
| | 48 | | } |
| | 49 | |
|
| | 50 | | /// <summary> |
| | 51 | | /// This is information associated with a single response. |
| | 52 | | /// </summary> |
| | 53 | | /// <typeparam name="TRequestMetaData">The type of the metadata of the request that this response is associated with. |
| | 54 | | public struct HTTPResponseInfo<TRequestMetaData> |
| | 55 | | { |
| | 56 | | /// <summary> |
| | 57 | | /// Creates a new instance of <see cref="HTTPResponseInfo{TRequestMetaData}"/> with given parameters. |
| | 58 | | /// </summary> |
| | 59 | | /// <param name="response">The <see cref="HTTPResponse"/>.</param> |
| | 60 | | /// <param name="metadata">The metadata of the request that <paramref name="response"/> is associated with.</param |
| | 61 | | /// <exception cref="ArgumentNullException">If <paramref name="response"/> is <c>null</c>.</exception> |
| | 62 | | public HTTPResponseInfo( |
| | 63 | | HTTPResponse response, |
| | 64 | | TRequestMetaData metadata |
| | 65 | | ) |
| | 66 | | { |
| | 67 | | this.Response = ArgumentValidator.ValidateNotNull( nameof( response ), response ); |
| | 68 | | this.RequestMetaData = metadata; |
| | 69 | | } |
| | 70 | |
|
| | 71 | | /// <summary> |
| | 72 | | /// Gets the <see cref="HTTPResponse"/> of this <see cref="HTTPResponseInfo{TRequestMetaData}"/>. |
| | 73 | | /// </summary> |
| | 74 | | /// <value>The <see cref="HTTPResponse"/> of this <see cref="HTTPResponseInfo{TRequestMetaData}"/>.</value> |
| | 75 | | public HTTPResponse Response { get; } |
| | 76 | |
|
| | 77 | | /// <summary> |
| | 78 | | /// Gets the metadata of the request that <see cref="Response"/> is associated with. |
| | 79 | | /// </summary> |
| | 80 | | /// <value>The metadata of the request that <see cref="Response"/> is associated with.</value> |
| | 81 | | public TRequestMetaData RequestMetaData { get; } |
| | 82 | | } |
| | 83 | |
|
| | 84 | | /// <summary> |
| | 85 | | /// This struct binds together the <see cref="HTTPRequest"/> and metadata. |
| | 86 | | /// </summary> |
| | 87 | | /// <typeparam name="TRequestMetaData">The type of metadata of the request. Typically this is <see cref="Guid"/> or < |
| | 88 | | public struct HTTPRequestInfo<TRequestMetaData> |
| | 89 | | { |
| | 90 | | /// <summary> |
| | 91 | | /// Creates a new instance of <see cref="HTTPRequestInfo{TRequestMetaData}"/> with given parameters. |
| | 92 | | /// </summary> |
| | 93 | | /// <param name="request">The <see cref="HTTPRequest"/>. May be <c>null</c>.</param> |
| | 94 | | /// <param name="metadata">The metadata of the <paramref name="request"/>.</param> |
| | 95 | | public HTTPRequestInfo( |
| | 96 | | HTTPRequest request, |
| | 97 | | TRequestMetaData metadata |
| | 98 | | ) |
| | 99 | | { |
| | 100 | | this.Request = request; |
| | 101 | | this.RequestMetaData = metadata; |
| | 102 | | } |
| | 103 | |
|
| | 104 | | /// <summary> |
| | 105 | | /// Gets the <see cref="HTTPRequest"/> of this <see cref="HTTPRequestInfo{TRequestMetaData}"/>. |
| | 106 | | /// </summary> |
| | 107 | | /// <value></value> |
| | 108 | | public HTTPRequest Request { get; } |
| | 109 | |
|
| | 110 | | /// <summary> |
| | 111 | | /// Gets the metadata of the <see cref="Request"/>. |
| | 112 | | /// </summary> |
| | 113 | | /// <value>The metadata of the <see cref="Request"/>.</value> |
| | 114 | | public TRequestMetaData RequestMetaData { get; } |
| | 115 | | } |
| | 116 | |
|
| | 117 | | /// <summary> |
| | 118 | | /// This class is meant to be used in simple situations, when the textual content of the HTTP response is meant to be |
| | 119 | | /// </summary> |
| | 120 | | /// <seealso cref="E_CBAM.CreateTextualResponseInfoAsync"/> |
| | 121 | | public sealed class HTTPTextualResponseInfo |
| | 122 | | { |
| 1 | 123 | | private static readonly Encoding DefaultTextEncoding = new UTF8Encoding( false, false ); |
| | 124 | |
|
| | 125 | | /// <summary> |
| | 126 | | /// Creates a new instance of <see cref="HTTPTextualResponseInfo"/> with given parameters. |
| | 127 | | /// </summary> |
| | 128 | | /// <param name="response">The <see cref="HTTPResponse"/>.</param> |
| | 129 | | /// <param name="content">The content of the <see cref="HTTPResponse"/>, as byte array.</param> |
| | 130 | | /// <param name="defaultEncoding">The default <see cref="Encoding"/> to use if no encoding can be deduced from <se |
| | 131 | | /// <exception cref="ArgumentNullException">If <paramref name="response"/> is <c>null</c>.</exception> |
| 2 | 132 | | public HTTPTextualResponseInfo( |
| 2 | 133 | | HTTPResponse response, |
| 2 | 134 | | Byte[] content, |
| 2 | 135 | | Encoding defaultEncoding |
| 2 | 136 | | ) |
| | 137 | | { |
| 2 | 138 | | ArgumentValidator.ValidateNotNull( nameof( response ), response ); |
| | 139 | |
|
| 2 | 140 | | this.Version = response.Version; |
| 2 | 141 | | this.StatusCode = response.StatusCode; |
| 2 | 142 | | this.Message = response.StatusCodeMessage; |
| 2 | 143 | | this.Headers = response.Headers; |
| | 144 | | String textualContent; |
| 2 | 145 | | if ( !content.IsNullOrEmpty() ) |
| | 146 | | { |
| | 147 | | String cType; |
| | 148 | | Int32 charsetIndex; |
| | 149 | | Int32 charsetEndIdx; |
| 2 | 150 | | var encoding = response.Headers.TryGetValue( "Content-Type", out var cTypes ) && cTypes.Count > 0 && ( chars |
| 2 | 151 | | Encoding.GetEncoding( cType.Substring( charsetIndex + 8, ( ( charsetEndIdx = cType.IndexOf( ';', charsetI |
| 2 | 152 | | ( defaultEncoding ?? DefaultTextEncoding ); |
| 2 | 153 | | textualContent = encoding.GetString( content, 0, content.Length ); |
| 2 | 154 | | } |
| | 155 | | else |
| | 156 | | { |
| 0 | 157 | | textualContent = String.Empty; |
| | 158 | | } |
| 2 | 159 | | this.TextualContent = textualContent; |
| 2 | 160 | | } |
| | 161 | |
|
| | 162 | | /// <summary> |
| | 163 | | /// Gets the <see cref="HTTPMessage{TContent, TDictionary, TList}.Version"/> of the <see cref="HTTPResponse"/> thi |
| | 164 | | /// </summary> |
| | 165 | | /// <value>The <see cref="HTTPMessage{TContent, TDictionary, TList}.Version"/> of the <see cref="HTTPResponse"/> t |
| 0 | 166 | | public String Version { get; } |
| | 167 | |
|
| | 168 | | /// <summary> |
| | 169 | | /// Gets the <see cref="HTTPResponse.StatusCode"/> of the <see cref="HTTPResponse"/> this <see cref="HTTPTextualRe |
| | 170 | | /// </summary> |
| | 171 | | /// <value>The <see cref="HTTPResponse.StatusCode"/> of the <see cref="HTTPResponse"/> this <see cref="HTTPTextual |
| 0 | 172 | | public Int32 StatusCode { get; } |
| | 173 | |
|
| | 174 | | /// <summary> |
| | 175 | | /// Gets the <see cref="HTTPResponse.StatusCodeMessage"/> of the <see cref="HTTPResponse"/> this <see cref="HTTPTe |
| | 176 | | /// </summary> |
| | 177 | | /// <value>The <see cref="HTTPResponse.StatusCodeMessage"/> of the <see cref="HTTPResponse"/> this <see cref="HTTP |
| 0 | 178 | | public String Message { get; } |
| | 179 | |
|
| | 180 | | /// <summary> |
| | 181 | | /// Gets the <see cref="HTTPMessage{TContent, TDictionary, TList}.Headers"/> of the <see cref="HTTPResponse"/> thi |
| | 182 | | /// </summary> |
| | 183 | | /// <value>the <see cref="HTTPMessage{TContent, TDictionary, TList}.Headers"/> of the <see cref="HTTPResponse"/> t |
| 0 | 184 | | public IReadOnlyDictionary<String, IReadOnlyList<String>> Headers { get; } |
| | 185 | |
|
| | 186 | | /// <summary> |
| | 187 | | /// Gets the deserialized <see cref="HTTPResponseContent"/> as <see cref="String"/>. |
| | 188 | | /// </summary> |
| | 189 | | /// <value>The deserialized <see cref="HTTPResponseContent"/> as <see cref="String"/>.</value> |
| 2 | 190 | | public String TextualContent { get; } |
| | 191 | |
|
| | 192 | |
|
| | 193 | | } |
| | 194 | |
|
| | 195 | | } |
| | 196 | |
|
| | 197 | | /// <summary> |
| | 198 | | /// This class contains extension methods for types defined in this assembly. |
| | 199 | | /// </summary> |
| | 200 | | public static partial class E_CBAM |
| | 201 | | { |
| | 202 | | /// <summary> |
| | 203 | | /// This method will asynchronously receive one <see cref="HTTPTextualResponseInfo"/> from this <see cref="HTTPConnec |
| | 204 | | /// </summary> |
| | 205 | | /// <typeparam name="TRequestMetaData">The type of metadata associated with given <see cref="HTTPRequest"/>. Typicall |
| | 206 | | /// <param name="connection">This <see cref="HTTPConnection{TRequestMetaData}"/>.</param> |
| | 207 | | /// <param name="request">The <see cref="HTTPRequest"/> to send.</param> |
| | 208 | | /// <param name="metaData">The metadata of the <paramref name="request"/>.</param> |
| | 209 | | /// <param name="defaultEncoding">The default encoding to use when deserializing response contents to string. By defa |
| | 210 | | /// <returns>Potentially asynchronously creates constructed <see cref="HTTPTextualResponseInfo"/>.</returns> |
| | 211 | | /// <exception cref="NullReferenceException">If this <see cref="HTTPConnection{TRequestMetaData}"/> is <c>null</c>.</ |
| | 212 | | public static Task<HTTPTextualResponseInfo> ReceiveOneTextualResponseAsync<TRequestMetaData>( |
| | 213 | | this HTTPConnection<TRequestMetaData> connection, |
| | 214 | | HTTPRequest request, |
| | 215 | | TRequestMetaData metaData = default, |
| | 216 | | Encoding defaultEncoding = default |
| | 217 | | ) |
| | 218 | | { |
| | 219 | |
|
| | 220 | | return connection |
| | 221 | | .PrepareStatementForExecution( new HTTPRequestInfo<TRequestMetaData>( request, metaData ) ) |
| | 222 | | .Select( async responseInfo => await responseInfo.Response.CreateTextualResponseInfoAsync( defaultEncoding ) ) |
| | 223 | | .FirstAsync(); |
| | 224 | | } |
| | 225 | |
|
| | 226 | | /// <summary> |
| | 227 | | /// Asynchronously creates <see cref="HTTPTextualResponseInfo"/> from this <see cref="HTTPResponse"/>. |
| | 228 | | /// </summary> |
| | 229 | | /// <param name="response">This <see cref="HTTPResponse"/>.</param> |
| | 230 | | /// <param name="defaultEncoding">The <see cref="Encoding"/> to use if <see cref="HTTPResponse"/> does not contain an |
| | 231 | | /// <returns>Potentially asynchronously creates constructed <see cref="HTTPTextualResponseInfo"/>.</returns> |
| | 232 | | /// <exception cref="NullReferenceException">If this <see cref="HTTPResponse"/> is <c>null</c>.</exception> |
| | 233 | | public static async ValueTask<HTTPTextualResponseInfo> CreateTextualResponseInfoAsync( |
| | 234 | | this HTTPResponse response, |
| | 235 | | Encoding defaultEncoding = default |
| | 236 | | ) |
| | 237 | | { |
| | 238 | | var content = response.Content; |
| | 239 | | Byte[] bytes; |
| | 240 | | if ( content != null ) |
| | 241 | | { |
| | 242 | | bytes = await content.ReadAllContentAsync(); |
| | 243 | | } |
| | 244 | | else |
| | 245 | | { |
| | 246 | | bytes = null; |
| | 247 | | } |
| | 248 | |
|
| | 249 | | return new HTTPTextualResponseInfo( response, bytes, defaultEncoding ); |
| | 250 | | } |
| | 251 | | } |