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| 1 | +/* |
| 2 | + * Copyright 2020 LINE Corporation |
| 3 | + * |
| 4 | + * LINE Corporation licenses this file to you under the Apache License, |
| 5 | + * version 2.0 (the "License"); you may not use this file except in compliance |
| 6 | + * with the License. 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, WITHOUT |
| 12 | + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| 13 | + * License for the specific language governing permissions and limitations |
| 14 | + * under the License. |
| 15 | + * |
| 16 | + */ |
| 17 | + |
| 18 | +package com.linecorp.bot.messagingapidemoapp.configuration; |
| 19 | + |
| 20 | +import java.io.IOException; |
| 21 | +import java.nio.charset.Charset; |
| 22 | +import java.nio.charset.StandardCharsets; |
| 23 | +import java.util.ArrayList; |
| 24 | +import java.util.Collections; |
| 25 | +import java.util.List; |
| 26 | +import java.util.stream.Collectors; |
| 27 | + |
| 28 | +import org.springframework.boot.context.properties.EnableConfigurationProperties; |
| 29 | +import org.springframework.context.annotation.Bean; |
| 30 | +import org.springframework.context.annotation.Configuration; |
| 31 | + |
| 32 | +import com.linecorp.bot.client.ChannelTokenSupplier; |
| 33 | +import com.linecorp.bot.client.LineMessagingClient; |
| 34 | +import com.linecorp.bot.spring.boot.LineBotProperties; |
| 35 | + |
| 36 | +import lombok.AllArgsConstructor; |
| 37 | +import lombok.Builder; |
| 38 | +import lombok.Getter; |
| 39 | +import lombok.Value; |
| 40 | +import okhttp3.Headers; |
| 41 | +import okhttp3.Interceptor; |
| 42 | +import okhttp3.MediaType; |
| 43 | +import okhttp3.Request; |
| 44 | +import okhttp3.RequestBody; |
| 45 | +import okhttp3.Response; |
| 46 | +import okhttp3.ResponseBody; |
| 47 | +import okio.Buffer; |
| 48 | +import okio.BufferedSource; |
| 49 | + |
| 50 | +@Configuration(proxyBeanMethods = false) |
| 51 | +@EnableConfigurationProperties(LineBotProperties.class) |
| 52 | +@AllArgsConstructor |
| 53 | +public class LineBotConfiguration { |
| 54 | + private LineBotProperties lineBotProperties; |
| 55 | + |
| 56 | + @Bean |
| 57 | + public MyInterceptor myInterceptor() { |
| 58 | + return new MyInterceptor(); |
| 59 | + } |
| 60 | + |
| 61 | + @Bean |
| 62 | + public LineMessagingClient lineMessagingClient(ChannelTokenSupplier channelTokenSupplier, |
| 63 | + MyInterceptor myInterceptor) { |
| 64 | + return LineMessagingClient |
| 65 | + .builder(channelTokenSupplier) |
| 66 | + .apiEndPoint(lineBotProperties.getApiEndPoint()) |
| 67 | + .blobEndPoint(lineBotProperties.getBlobEndPoint()) |
| 68 | + .connectTimeout(lineBotProperties.getConnectTimeout()) |
| 69 | + .readTimeout(lineBotProperties.getReadTimeout()) |
| 70 | + .writeTimeout(lineBotProperties.getWriteTimeout()) |
| 71 | + .additionalInterceptors(Collections.singletonList(myInterceptor)) |
| 72 | + .build(); |
| 73 | + } |
| 74 | + |
| 75 | + public static class MyInterceptor implements Interceptor { |
| 76 | + private List<ApiCallLog> logs = new ArrayList<>(); |
| 77 | + |
| 78 | + @Override |
| 79 | + public Response intercept(Chain chain) throws IOException { |
| 80 | + Request request = chain.request(); |
| 81 | + ApiCallRequest apiCallRequest = ApiCallRequest.create(request); |
| 82 | + Response response = chain.proceed(request); |
| 83 | + ApiCallResponse apiCallResponse = ApiCallResponse.create(response); |
| 84 | + ApiCallLog apiCallLog = new ApiCallLog(apiCallRequest, apiCallResponse); |
| 85 | + logs.add(apiCallLog); |
| 86 | + if (logs.size() > 40) { |
| 87 | + logs.remove(0); |
| 88 | + } |
| 89 | + return response; |
| 90 | + } |
| 91 | + |
| 92 | + public List<ApiCallLog> getLogs() { |
| 93 | + return Collections.unmodifiableList(logs); |
| 94 | + } |
| 95 | + } |
| 96 | + |
| 97 | + @Value |
| 98 | + public static class ApiCallLog { |
| 99 | + ApiCallRequest request; |
| 100 | + ApiCallResponse response; |
| 101 | + } |
| 102 | + |
| 103 | + @Builder |
| 104 | + @Getter |
| 105 | + public static class ApiCallRequest { |
| 106 | + public static ApiCallRequest create(Request request) throws IOException { |
| 107 | + return ApiCallRequest.builder() |
| 108 | + .method(request.method()) |
| 109 | + .url(request.url().toString()) |
| 110 | + .headers(buildHeaders(request.headers())) |
| 111 | + .body(buildBody(request.body())) |
| 112 | + .build(); |
| 113 | + } |
| 114 | + |
| 115 | + private static String buildBody(RequestBody body) throws IOException { |
| 116 | + if (body == null) { |
| 117 | + return "<EMPTY>"; |
| 118 | + } |
| 119 | + if (body.isDuplex()) { |
| 120 | + return "<DUPLEX>"; |
| 121 | + } |
| 122 | + if (body.isOneShot()) { |
| 123 | + return "<ONESHOT>"; |
| 124 | + } |
| 125 | + boolean result = false; |
| 126 | + MediaType mediaType = body.contentType(); |
| 127 | + if (mediaType != null) { |
| 128 | + String type = mediaType.type(); |
| 129 | + result = "text".equals(type) || "application".equals(type); |
| 130 | + } |
| 131 | + if (result) { |
| 132 | + Buffer buffer = new Buffer(); |
| 133 | + body.writeTo(buffer); |
| 134 | + return buffer.readString(StandardCharsets.UTF_8); |
| 135 | + } else { |
| 136 | + return "<BINARY: " + body.contentType() + ">"; |
| 137 | + } |
| 138 | + } |
| 139 | + |
| 140 | + String method; |
| 141 | + String url; |
| 142 | + List<HeaderEntry> headers; |
| 143 | + String body; |
| 144 | + } |
| 145 | + |
| 146 | + @Value |
| 147 | + public static class HeaderEntry { |
| 148 | + String name; |
| 149 | + String value; |
| 150 | + } |
| 151 | + |
| 152 | + private static List<HeaderEntry> buildHeaders(Headers headers) { |
| 153 | + return headers.names() |
| 154 | + .stream() |
| 155 | + .flatMap(name -> headers.values(name) |
| 156 | + .stream() |
| 157 | + .map(value -> new HeaderEntry(name, value))) |
| 158 | + .collect(Collectors.toList()); |
| 159 | + } |
| 160 | + |
| 161 | + @Builder |
| 162 | + @Getter |
| 163 | + public static class ApiCallResponse { |
| 164 | + public static ApiCallResponse create(Response response) throws IOException { |
| 165 | + return ApiCallResponse.builder() |
| 166 | + .code(response.code()) |
| 167 | + .message(response.message()) |
| 168 | + .headers(buildHeaders(response.headers())) |
| 169 | + .body(buildBody(response.body())) |
| 170 | + .build(); |
| 171 | + } |
| 172 | + |
| 173 | + int code; |
| 174 | + String message; |
| 175 | + List<HeaderEntry> headers; |
| 176 | + String body; |
| 177 | + } |
| 178 | + |
| 179 | + private static String buildBody(ResponseBody body) throws IOException { |
| 180 | + if (body == null) { |
| 181 | + return "<EMPTY>"; |
| 182 | + } |
| 183 | + |
| 184 | + MediaType contentType = body.contentType(); |
| 185 | + if (contentType == null) { |
| 186 | + return "<BINARY>"; |
| 187 | + } |
| 188 | + String type = contentType.type(); |
| 189 | + Charset charset = contentType.charset(); |
| 190 | + if (("text".equals(type) || "application".equals(type))) { |
| 191 | + if (charset == null) { |
| 192 | + if ("application".equals(type)) { |
| 193 | + charset = StandardCharsets.UTF_8; |
| 194 | + } else { |
| 195 | + return "<BINARY: " + contentType + ">"; |
| 196 | + } |
| 197 | + } |
| 198 | + BufferedSource source = body.source(); |
| 199 | + source.request(Long.MAX_VALUE); // Buffer the entire body. |
| 200 | + Buffer buffer = source.getBuffer(); |
| 201 | + return buffer.clone().readString(charset); |
| 202 | + } else { |
| 203 | + return "<BINARY: " + body.contentType() + ">"; |
| 204 | + } |
| 205 | + } |
| 206 | +} |
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