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■ Fuel

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■ Async mode

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// Using httpGet() over a String is giving us a Triple<Request, Response, Result>.\n\n\"https://httpbin.org/get\".httpGet().responseString { request, response, result ->\n  when (result) {\n    is Result.Failure -> {\n      val errorData = String(result.error.errorData)\n    }\n    is Result.Success -> {\n      val data = result.get()\n    }\n  }\n}\n\nFuelManager.instance.basePath = \"https://httpbin.org\"\n\"/get\".httpGet().responseString { request, response, result ->\n    val (data, error) = result\n    if (error == null) {\n        //do something when success\n    } else {\n        //error handling\n    }\n}
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■ Blocking mode

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// Using httpGet() over a String is giving us a Triple<Request, Response, Result>.\n    \nval (request, response, result) = \"https://httpbin.org/get\"\n    .httpGet()\n    .responseString()
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■ Result

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fun response(handler: (Request, Response, Result<ByteArray, FuelError>) -> Unit)\n\nfun responseString(handler: (Request, Response, Result<String, FuelError>) -> Unit)\n\nfun responseJson(handler: (Request, Response, Result<Json, FuelError>) -> Unit)\nval jsonObject = json.obj() //JSONObject\nval jsonArray = json.array() //JSONArray\n\n\nfun <T> responseObject(deserializer: ResponseDeserializable<T>, handler: (Request, Response, Result<T, FuelError>) -> Unit)
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■ 무엇이 쉽나

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Adding Parameters

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URL encoded style for GET and DELETE request

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Fuel.get(\"https://httpbin.org/get\", listOf(\"foo\" to \"foo\", \"bar\" to \"bar\"))\n    .url\n// https://httpbin.org/get?foo=foo&bar=bar
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Support x-www-form-urlencoded for PUT, POST and PATCH

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Fuel.post(\"https://httpbin.org/post\", listOf(\"foo\" to \"foo\", \"bar\" to \"bar\"))\n    .also { println(it.url) }\n    .also { println(String(it.body().toByteArray())) }\n\n// https://httpbin.org/post\n// \"foo=foo&bar=bar\"
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Adding Request Body \nuse application/json

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Fuel.post(\"https://httpbin.org/post\")\n    .jsonBody(\"{ \\\"foo\\\" : \\\"bar\\\" }\")\n    .also { println(it) }\n    .response { result -> }
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Adding Progress callbacks

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Request progress

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Fuel.post(\"/post\")\n    .body(/*...*/)\n    .requestProgress { readBytes, totalBytes ->\n      val progress = readBytes.toFloat() / totalBytes.toFloat() * 100\n      println(\"Bytes uploaded $readBytes / $totalBytes ($progress %)\")\n    }\n    .response { result -> }
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Response progress

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Fuel.get(\"/get\")\n    .responseProgress { readBytes, totalBytes ->\n      val progress = readBytes.toFloat() / totalBytes.toFloat() * 100\n      println(\"Bytes downloaded $readBytes / $totalBytes ($progress %)\")\n    }\n    .response { result -> }
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Using multipart/form-data(UploadRequest)

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Fuel.upload(\"/post\")\n    .add { FileDataPart(File(\"myfile.json\"), name = \"fieldname\", filename=\"contents.json\") }\n    .response { result -> }\n\nFuel.upload(\"/post\")\n    .add(\n        FileDataPart(File(\"myfile.json\"), name = \"files[]\", filename=\"contents.json\"),\n        FileDataPart(File(\"myfile2.json\"), name = \"files[]\", filename=\"contents2.json\"),\n        FileDataPart(File(\"myfile3.json\"), name = \"files[]\", filename=\"contents3.json\")\n    )\n    .response { result -> }
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Cancle an async Request

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val request = Fuel.get(\"https://httpbin.org/get\")\n  .interrupt { request -> println(\"${request.url} was interrupted and cancelled\") }\n  .response { result ->\n    // if request is cancelled successfully, response callback will not be called.\n    // Interrupt callback (if provided) will be called instead\n  }\n\nrequest.cancel() // this will cancel on-going request
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Debug Logging

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val request = Fuel.post(\"https://httpbin.org/post\", parameters = listOf(\"foo\" to \"foo\", \"bar\" to \"bar\", \"key\" to \"value\"))\nprintln(request.cUrlString())\n\n// curl -i -X POST -d \"foo=foo&bar=bar&key=value\" -H \"Accept-Encoding:compress;q=0.5, gzip;q=1.0\" -H \"Device:Android\" -H \"Content-Type:application/x-www-form-urlencoded\" \"https://httpbin.org/post\"
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Asynchronous API

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non-blocking asynchronous request 를 보통 사용한다고 하는데 이는 무엇인가?
\n먼저 Async, Sync & Blocking, Non-Blocking 의 차이를 살펴보자
\n작업을 요청하는 클라이언트 : A
\n작업을 수행해서 결과를 return : B

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Sync & Async : 작업의 주체성을 누가 갖는가 => A / B\nBlocking & Non-Blocking : 로직의 흐름 => 멈춘다. / 안 멈춘다.\n\nSync-Blocking : A 는 B 가 완료할 때까지 계속 기다린다.\nSync-Non-Blocking : A 가 작업의 주체성을 갖고 있으며, B 가 작업을 완료할 때까지 핑퐁하면서 완료 여부를 체크한다.\n\nNon-Blocking : B 가 A 에게\nAsync-Blocking : A 가 넘겨준 콜백 함수를 B 가 실행하고 완료하는 것을 기다린다.\nAsync-Non-Blocking : A 가 B 에게 콜백 함수를 넘겨주고 A 는 자신의 일을 계속 진행하다가 B 가 작업 완료하면 A 가 넘겨 준 콜백 함수를 수행한다.
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fuel doc

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https://fuel.gitbook.io/documentation/core/fuel#using-multipart-form-data-uploadrequest

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fuel github

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https://github.com/kittinunf/fuel\nhttps://github.com/kittinunf/fuel/blob/master/README-legacy.md

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https://medium.com/swlh/is-fuel-an-alternative-for-retrofit-f81bd4505a87

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webclient vs resttemplate

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https://tecoble.techcourse.co.kr/post/2021-10-20-synchronous-asynchronous/

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■ 제목입니당 \n ■ 서브제목입니당 \n ■ 서브제목2입니당

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안녕

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안녕

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안녕

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안녕

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안녕
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이미지\n

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- hello\n+ green\n! orange\n# gray
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