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RestEndpoint.scala
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RestEndpoint.scala
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/*
* Copyright 2020 ABSA Group Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package za.co.absa.spline.harvester.dispatcher.httpdispatcher.rest
import org.apache.commons.configuration.Configuration
import org.apache.http.HttpHeaders
import scalaj.http.{HttpRequest, HttpResponse}
import za.co.absa.spline.commons.lang.ARM.using
import za.co.absa.spline.harvester.dispatcher.httpdispatcher.HttpConstants.Encoding
import za.co.absa.spline.harvester.dispatcher.httpdispatcher.auth.Authentication
import za.co.absa.spline.harvester.dispatcher.httpdispatcher.rest.RestEndpoint._
import java.io.ByteArrayOutputStream
import java.util.zip.GZIPOutputStream
import javax.ws.rs.HttpMethod
class RestEndpoint(val request: HttpRequest, val authConfig: Configuration) {
private val authenticationContext: Authentication = Authentication.fromConfig(authConfig)
def head(): HttpResponse[String] = authenticationContext.authenticate(httpRequest = request, authConfig = authConfig)
.method(HttpMethod.HEAD)
.asString
def post(data: String, contentType: String, enableRequestCompression: Boolean): HttpResponse[String] = {
val jsonRequest = authenticationContext.authenticate(httpRequest = request, authConfig = authConfig)
.header(HttpHeaders.CONTENT_TYPE, contentType)
if (enableRequestCompression && data.length > GzipCompressionLengthThreshold) {
jsonRequest
.header(HttpHeaders.CONTENT_ENCODING, Encoding.GZIP)
.postData(gzipContent(data.getBytes("UTF-8")))
.asString
} else {
jsonRequest
.postData(data)
.asString
}
}
}
object RestEndpoint {
private val GzipCompressionLengthThreshold: Int = 2048
private def gzipContent(bytes: Array[Byte]): Array[Byte] = {
val byteStream = new ByteArrayOutputStream(bytes.length)
using(new GZIPOutputStream(byteStream))(_.write(bytes))
byteStream.toByteArray
}
}