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Adding a simple layer ontop of AsyncHttpClient
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| /* | ||
| * Copyright (c) 2016 Algolia | ||
| * http://www.algolia.com/ | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in | ||
| * all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
| * THE SOFTWARE. | ||
| */ | ||
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| package algolia | ||
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| import algolia.http._ | ||
| import io.netty.channel.nio.NioEventLoopGroup | ||
| import io.netty.channel.socket.nio.NioDatagramChannel | ||
| import io.netty.resolver.dns.DnsNameResolverBuilder | ||
| import org.asynchttpclient._ | ||
| import org.json4s._ | ||
| import org.json4s.native.JsonMethods._ | ||
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| import scala.concurrent.{ExecutionContext, Future, Promise} | ||
| import scala.util.Try | ||
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| object default { | ||
| val httpReadTimeout = 2000 | ||
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| //httpSocketTimeout in HttpClient | ||
| val httpConnectTimeout = 2000 | ||
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| val httpRequestTimeout = 2000 | ||
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| val dnsTimeout = httpConnectTimeout / 10 | ||
| } | ||
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| case class AlgoliaHttpClient(httpReadTimeout: Int = default.httpReadTimeout, | ||
| httpConnectTimeout: Int = default.httpConnectTimeout, | ||
| httpRequestTimeout: Int = default.httpRequestTimeout, | ||
| dnsTimeout: Int = default.dnsTimeout) { | ||
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| val asyncClientConfig = | ||
| new DefaultAsyncHttpClientConfig | ||
| .Builder() | ||
| .setConnectTimeout(httpConnectTimeout) | ||
| .setReadTimeout(httpReadTimeout) | ||
| .setRequestTimeout(httpRequestTimeout) | ||
| .build | ||
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| val dnsNameResolver = | ||
| new DnsNameResolverBuilder(new NioEventLoopGroup(1).next()) //We only need 1 thread for DNS resolution | ||
| .channelType(classOf[NioDatagramChannel]) | ||
| .queryTimeoutMillis(dnsTimeout) | ||
| .build | ||
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| val _httpClient = new DefaultAsyncHttpClient(asyncClientConfig) | ||
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| implicit val formats: Formats = AlgoliaDsl.formats | ||
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| def request[T: Manifest](host: String, headers: Map[String, String], payload: HttpPayload)(implicit executor: ExecutionContext): Future[T] = { | ||
| val request = payload(host, headers, dnsNameResolver) | ||
| makeRequest(request, responseHandler) | ||
| } | ||
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| def responseHandler[T: Manifest] = new AsyncCompletionHandler[T] { | ||
| override def onCompleted(response: Response) = response.getStatusCode / 100 match { | ||
| case 2 => toJson(response).extract[T] | ||
| case 4 => throw APIClientException(response.getStatusCode, (toJson(response) \ "message").extract[String]) | ||
| case _ => throw UnexpectedResponse(response.getStatusCode) | ||
| } | ||
| } | ||
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| def toJson(r: Response) = parse(StringInput(r.getResponseBody), useBigDecimalForDouble = true) | ||
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| def makeRequest[T](request: Request, handler: AsyncHandler[T])(implicit executor: ExecutionContext): Future[T] = { | ||
| val javaFuture = _httpClient.executeRequest(request, handler) | ||
| val promise = Promise[T]() | ||
| val runnable = new java.lang.Runnable { | ||
| def run() { | ||
| promise.complete(Try(javaFuture.get())) | ||
| } | ||
| } | ||
| val exec = new java.util.concurrent.Executor { | ||
| def execute(runnable: Runnable) { | ||
| executor.execute(runnable) | ||
| } | ||
| } | ||
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| javaFuture.addListener(runnable, exec) | ||
| promise.future | ||
| } | ||
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| } | ||
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| case class APIClientException(code: Int, message: String) extends Exception("Failure \"%s\", response status: %d".format(message, code)) | ||
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| case class UnexpectedResponse(code: Int) extends Exception("Unexpected response status: %d".format(code)) |
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