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| 1 | +package com.dropbox.core.http; |
| 2 | + |
| 3 | +import okhttp3.Call; |
| 4 | +import okhttp3.Headers; |
| 5 | +import okhttp3.MediaType; |
| 6 | +import okhttp3.OkHttpClient; |
| 7 | +import okhttp3.Request; |
| 8 | +import okhttp3.RequestBody; |
| 9 | +import okhttp3.internal.Util; |
| 10 | + |
| 11 | +import java.io.IOException; |
| 12 | +import java.util.HashMap; |
| 13 | +import java.util.List; |
| 14 | +import java.util.Map; |
| 15 | +import java.util.concurrent.TimeUnit; |
| 16 | + |
| 17 | +import okio.Buffer; |
| 18 | +import okio.BufferedSink; |
| 19 | + |
| 20 | +/*>>> import checkers.nullness.quals.Nullable; */ |
| 21 | + |
| 22 | +/** |
| 23 | + * {@link HttpRequestor} implementation that uses <a href="http://square.github.io/okhttp/">OkHttp |
| 24 | + * v3</a>. You can only use this if your project includes the OkHttp v3 library. |
| 25 | + * |
| 26 | + * <p> |
| 27 | + * To use this, pass {@link #INSTANCE} to the {@link com.dropbox.core.DbxRequestConfig} constructor. |
| 28 | + * </p> |
| 29 | + */ |
| 30 | +public class OkHttp3Requestor extends HttpRequestor { |
| 31 | + /** |
| 32 | + * A thread-safe instance of {@code OkHttp3Requestor} that connects directly |
| 33 | + * (as opposed to using a proxy). |
| 34 | + */ |
| 35 | + public static final OkHttp3Requestor INSTANCE = new OkHttp3Requestor(defaultOkHttpClient()); |
| 36 | + |
| 37 | + private final OkHttpClient client; |
| 38 | + |
| 39 | + private static OkHttpClient defaultOkHttpClient() { |
| 40 | + return new OkHttpClient.Builder() |
| 41 | + .connectTimeout(DEFAULT_CONNECT_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS) |
| 42 | + .readTimeout(DEFAULT_READ_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS) |
| 43 | + .writeTimeout(DEFAULT_READ_TIMEOUT_MILLIS, TimeUnit.MILLISECONDS) |
| 44 | + .build(); |
| 45 | + } |
| 46 | + |
| 47 | + public OkHttp3Requestor(OkHttpClient client) { |
| 48 | + this.client = client; |
| 49 | + } |
| 50 | + |
| 51 | + public OkHttpClient getClient() { |
| 52 | + return client; |
| 53 | + } |
| 54 | + |
| 55 | + @Override |
| 56 | + public Response doGet(String url, Iterable<Header> headers) throws IOException { |
| 57 | + Request.Builder builder = new Request.Builder().get().url(url); |
| 58 | + toOkHttpHeaders(headers, builder); |
| 59 | + okhttp3.Response response = client.newCall(builder.build()).execute(); |
| 60 | + Map<String, List<String>> responseHeaders = fromOkHttpHeaders(response.headers()); |
| 61 | + return new Response(response.code(), response.body().byteStream(), responseHeaders); |
| 62 | + } |
| 63 | + |
| 64 | + @Override |
| 65 | + public HttpRequestor.Uploader startPost(String url, Iterable<Header> headers) throws IOException { |
| 66 | + return startUpload(url, headers, "POST"); |
| 67 | + } |
| 68 | + |
| 69 | + @Override |
| 70 | + public HttpRequestor.Uploader startPut(String url, Iterable<Header> headers) throws IOException { |
| 71 | + return startUpload(url, headers, "PUT"); |
| 72 | + } |
| 73 | + |
| 74 | + private BufferUploader startUpload(String url, Iterable<Header> headers, String method) { |
| 75 | + Buffer requestBuffer = new Buffer(); |
| 76 | + RequestBody requestBody = new BufferRequestBody(requestBuffer, null); |
| 77 | + Request.Builder builder = new Request.Builder().method(method, requestBody).url(url); |
| 78 | + toOkHttpHeaders(headers, builder); |
| 79 | + return new BufferUploader(client.newCall(builder.build()), requestBuffer); |
| 80 | + } |
| 81 | + |
| 82 | + private static void toOkHttpHeaders(Iterable<Header> headers, Request.Builder builder) { |
| 83 | + for (Header header : headers) { |
| 84 | + builder.addHeader(header.getKey(), header.getValue()); |
| 85 | + } |
| 86 | + } |
| 87 | + |
| 88 | + private static Map<String, List<String>> fromOkHttpHeaders(Headers headers) { |
| 89 | + Map<String, List<String>> responseHeaders = new HashMap<String, List<String>>(headers.size()); |
| 90 | + for (String name : headers.names()) { |
| 91 | + responseHeaders.put(name, headers.values(name)); |
| 92 | + } |
| 93 | + return responseHeaders; |
| 94 | + } |
| 95 | + |
| 96 | + /** |
| 97 | + * Implementation of {@link com.dropbox.core.http.HttpRequestor.Uploader} that exposes |
| 98 | + * the {@link java.io.OutputStream} from an Okio {@link Buffer} that is connected to an OkHttp |
| 99 | + * {@link RequestBody}. Calling {@link #finish()} will execute the request with OkHttp |
| 100 | + */ |
| 101 | + private static class BufferUploader extends HttpRequestor.Uploader { |
| 102 | + private final Call call; |
| 103 | + private final Buffer requestBuffer; |
| 104 | + |
| 105 | + public BufferUploader(Call call, Buffer requestBuffer) { |
| 106 | + super(requestBuffer.outputStream()); |
| 107 | + this.call = call; |
| 108 | + this.requestBuffer = requestBuffer; |
| 109 | + } |
| 110 | + |
| 111 | + @Override |
| 112 | + public void close() { |
| 113 | + requestBuffer.clear(); |
| 114 | + } |
| 115 | + |
| 116 | + @Override |
| 117 | + public void abort() { |
| 118 | + call.cancel(); |
| 119 | + } |
| 120 | + |
| 121 | + @Override |
| 122 | + public Response finish() throws IOException { |
| 123 | + okhttp3.Response response = call.execute(); |
| 124 | + Map<String, List<String>> responseHeaders = fromOkHttpHeaders(response.headers()); |
| 125 | + return new Response(response.code(), response.body().byteStream(), responseHeaders); |
| 126 | + } |
| 127 | + } |
| 128 | + |
| 129 | + /** |
| 130 | + * Implementation of {@link RequestBody} that uses a {@link Buffer} |
| 131 | + * for internal storage. |
| 132 | + */ |
| 133 | + private static class BufferRequestBody extends RequestBody { |
| 134 | + private Buffer buffer; |
| 135 | + private /*@Nullable*/MediaType mediaType; |
| 136 | + |
| 137 | + public BufferRequestBody(final Buffer buffer, /*@Nullable*/MediaType mediaType) { |
| 138 | + this.buffer = buffer; |
| 139 | + this.mediaType = mediaType; |
| 140 | + } |
| 141 | + |
| 142 | + @Override |
| 143 | + public /*@Nullable*/MediaType contentType() { |
| 144 | + return mediaType; |
| 145 | + } |
| 146 | + |
| 147 | + @Override |
| 148 | + public long contentLength() { |
| 149 | + return buffer.size(); |
| 150 | + } |
| 151 | + |
| 152 | + @Override |
| 153 | + public void writeTo(BufferedSink sink) throws IOException { |
| 154 | + try { |
| 155 | + sink.writeAll(buffer); |
| 156 | + } finally { |
| 157 | + Util.closeQuietly(buffer); |
| 158 | + } |
| 159 | + } |
| 160 | + } |
| 161 | +} |
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