src/main/scala/com/googlesource/gerrit/plugins/analytics/common/GsonFormatter.scala

// Copyright (C) 2017 The Android Open Source Project
//
// 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 com.googlesource.gerrit.plugins.analytics.common

import java.io.PrintWriter

import com.google.gerrit.server.OutputFormat
import com.google.gson.{Gson, GsonBuilder}
import com.google.inject.Singleton

@Singleton
class GsonFormatter {
  val gsonBuilder: GsonBuilder = OutputFormat.JSON_COMPACT.newGsonBuilder

  def format[T](values: TraversableOnce[T], out: PrintWriter) {
    val gson: Gson = gsonBuilder.create
    for (value <- values) {
      gson.toJson(value, out)
      out.println
    }
  }
}