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#187 Retrofit2에 CustomCallAdapter를 추가하여 오류 처리를 일관적 으로 한곳에서 처리하도록 개선
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107 changes: 107 additions & 0 deletions
107
...ain/java/com/android/mediproject/core/network/retrofitext/NetworkApiCallAdapterFactory.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| package com.android.mediproject.core.network.retrofitext | ||
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| import okhttp3.Request | ||
| import okio.Timeout | ||
| import retrofit2.Call | ||
| import retrofit2.CallAdapter | ||
| import retrofit2.Callback | ||
| import retrofit2.Response | ||
| import retrofit2.Retrofit | ||
| import java.lang.reflect.ParameterizedType | ||
| import java.lang.reflect.Type | ||
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| internal class NetworkApiCallAdapterFactory : CallAdapter.Factory() { | ||
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| override fun get(returnType: Type, annotations: Array<out Annotation>, retrofit: Retrofit): CallAdapter<*, *>? { | ||
| if (Call::class.java != getRawType(returnType)) | ||
| return null | ||
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| check(returnType is ParameterizedType) { | ||
| "반환 유형은 Call<NetworkApiResult<<Foo>> or Call<NetworkApiResult<out Foo>>로 매개변수화 되어야 합니다." | ||
| } | ||
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| val responseType = getParameterUpperBound(0, returnType) | ||
| if (getRawType(responseType) != NetworkApiResult::class.java) | ||
| return null | ||
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| // the response type is ApiResponse and should be parameterized | ||
| check(responseType is ParameterizedType) { "응답은 NetworkApiResult<Foo> or NetworkApiResult<out Foo>로 매개변수화 되어야 합니다." } | ||
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| val successBodyType = getParameterUpperBound(0, responseType) | ||
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| return NetworkApiCallAdapter<Any>(successBodyType) | ||
| } | ||
| } | ||
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| internal class NetworkApiCallAdapter<R>( | ||
| private val successType: Type, | ||
| ) : CallAdapter<R, Call<NetworkApiResult<R>>> { | ||
| override fun adapt(call: Call<R>): Call<NetworkApiResult<R>> = NetworkApiCall(call, successType) | ||
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| override fun responseType(): Type = successType | ||
| } | ||
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| internal class NetworkApiCall<R>( | ||
| private val delegate: Call<R>, | ||
| private val successType: Type, | ||
| ) : Call<NetworkApiResult<R>> { | ||
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| override fun enqueue(callback: Callback<NetworkApiResult<R>>) = delegate.enqueue( | ||
| object : Callback<R> { | ||
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| override fun onResponse(call: Call<R>, response: Response<R>) { | ||
| val isSuccessful = response.isSuccessful | ||
| val errorBody = response.errorBody() | ||
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| if (!isSuccessful) { | ||
| // errorBody가 null인 경우 -> UnknownError | ||
| // 아닌 경우 -> NetworkError | ||
| val throwable = Throwable(errorBody?.string() ?: "네트워크 응답 중 알수 없는 오류가 발생하였습니다!") | ||
| return callback.onResponse( | ||
| this@NetworkApiCall, | ||
| Response.success( | ||
| errorBody?.let { NetworkApiResult.Failure.ApiError(throwable) } | ||
| ?: NetworkApiResult.Failure.UnknownError(throwable), | ||
| ), | ||
| ) | ||
| } | ||
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| // body가 null인 경우 -> ApiError | ||
| // 아닌 경우 -> Success | ||
| return callback.onResponse( | ||
| this@NetworkApiCall, | ||
| Response.success( | ||
| response.body()?.let { NetworkApiResult.Success(it) } | ||
| ?: NetworkApiResult.Failure.UnknownError( | ||
| IllegalStateException( | ||
| "네트워크 응답 결과 body가 null입니다!", | ||
| ), | ||
| ), | ||
| ), | ||
| ) | ||
| } | ||
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| override fun onFailure(call: Call<R?>, throwable: Throwable) { | ||
| callback.onResponse(this@NetworkApiCall, Response.success(NetworkApiResult.Failure.NetworkError(throwable))) | ||
| } | ||
| }, | ||
| ) | ||
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| override fun isExecuted() = delegate.isExecuted | ||
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| override fun clone() = NetworkApiCall(delegate.clone(), successType) | ||
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| override fun isCanceled() = delegate.isCanceled | ||
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| override fun cancel() = delegate.cancel() | ||
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| override fun execute(): Response<NetworkApiResult<R>> { | ||
| throw UnsupportedOperationException("NetworkApiResult doesn't support execute") | ||
| } | ||
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| override fun request(): Request = delegate.request() | ||
| override fun timeout(): Timeout = delegate.timeout() | ||
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| } |
14 changes: 14 additions & 0 deletions
14
...etwork/src/main/java/com/android/mediproject/core/network/retrofitext/NetworkApiResult.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| package com.android.mediproject.core.network.retrofitext | ||
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| import io.github.pknujsp.core.annotation.KBindFunc | ||
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| @KBindFunc | ||
| sealed interface NetworkApiResult<out T> { | ||
| data class Success<out T>(val data: T) : NetworkApiResult<T> | ||
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| sealed class Failure(open val exception: Throwable) : NetworkApiResult<Nothing> { | ||
| class ApiError(exception: Throwable) : Failure(exception) | ||
| class NetworkError(exception: Throwable) : Failure(exception) | ||
| class UnknownError(exception: Throwable) : Failure(exception) | ||
| } | ||
| } |