fix: socket time out exception, unknown host excpetion 처리

Author: DoTheBestMayB

data/src/main/java/com/stop/data/di/NetworkModule.kt

@@ -20,6 +20,7 @@ import okhttp3.Response
 import okhttp3.logging.HttpLoggingInterceptor
 import retrofit2.Retrofit
 import retrofit2.converter.moshi.MoshiConverterFactory
+import java.util.concurrent.TimeUnit
 import javax.inject.Named
 import javax.inject.Singleton
 
@@ -40,6 +41,9 @@ internal object NetworkModule {
         loggingInterceptor: HttpLoggingInterceptor,
     ): OkHttpClient {
         return OkHttpClient.Builder()
+            .connectTimeout(500, TimeUnit.SECONDS)
+            .writeTimeout(500, TimeUnit.SECONDS)
+            .readTimeout(500, TimeUnit.SECONDS)
             .addInterceptor(loggingInterceptor)
             .addInterceptor(customInterceptor)
             .build()

presentation/src/main/java/com/stop/model/ErrorType.kt

@@ -12,4 +12,7 @@ enum class ErrorType(val stringResourcesId: Int) {
     AVAILABLE_BUS_NO_EXIST_YET(R.string.available_bus_no_exist_yet),
     BUS_DISAPPEAR_SUDDENLY(R.string.bus_disappear_suddenly),
     MISSION_SOMETHING_WRONG(R.string.mission_something_wrong),
+    SOCKET_TIMEOUT_EXCEPTION(R.string.socket_timeout_exception_please_retry),
+    UNKNOWN_EXCEPTION(R.string.unknown_exception_occur),
+    UNKNOWN_HOST_EXCEPTION(R.string.unknown_host_exception_occur),
 }

presentation/src/main/java/com/stop/ui/route/RouteViewModel.kt

@@ -14,7 +14,11 @@ import com.stop.model.ErrorType
 import com.stop.model.Event
 import com.stop.model.route.Place
 import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.CoroutineExceptionHandler
+import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
+import java.net.SocketTimeoutException
+import java.net.UnknownHostException
 import javax.inject.Inject
 
 @HiltViewModel
@@ -50,6 +54,16 @@ class RouteViewModel @Inject constructor(
     val isLoading: LiveData<Event<Boolean>>
         get() = _isLoading
 
+    private val coroutineExceptionHandler = CoroutineExceptionHandler { _, throwable ->
+        val errorMessage = when (throwable) {
+            is SocketTimeoutException -> Event(ErrorType.SOCKET_TIMEOUT_EXCEPTION)
+            is UnknownHostException -> Event(ErrorType.UNKNOWN_HOST_EXCEPTION)
+            else -> Event(ErrorType.UNKNOWN_EXCEPTION)
+        }
+        _errorMessage.postValue(errorMessage)
+        _isLoading.postValue(Event(false))
+    }
+
     fun patchRoute(isShowError: Boolean = true) {
         val originValue = _origin.value ?: let {
             if (!isShowError) {
@@ -75,7 +89,7 @@ class RouteViewModel @Inject constructor(
             endY = destinationValue.coordinate.latitude,
         )
 
-        viewModelScope.launch {
+        viewModelScope.launch(Dispatchers.Default + coroutineExceptionHandler) {
             val itineraries = getRouteUseCase(routeRequest)
             if (itineraries.isEmpty()) {
                 _errorMessage.value = Event(ErrorType.NO_ROUTE_RESULT)
@@ -97,8 +111,9 @@ class RouteViewModel @Inject constructor(
 
     fun calculateLastTransportTime(itinerary: Itinerary) {
         checkClickedItinerary(itinerary)
-        viewModelScope.launch {
-            this@RouteViewModel._lastTimeResponse.value = Event(getLastTransportTimeUseCase(itinerary) )
+        viewModelScope.launch(Dispatchers.Default + coroutineExceptionHandler) {
+            this@RouteViewModel._lastTimeResponse.value =
+                Event(getLastTransportTimeUseCase(itinerary))
         }
     }
 

presentation/src/main/res/values/strings.xml

@@ -80,4 +80,7 @@
     <string name="end_position_text">도착지 : %1$s</string>
     <string name="last_time_text">막차시간 : %1$s</string>
     <string name="walk_time_text">%1$d분</string>
+    <string name="socket_timeout_exception_please_retry">API 서버가 응답하지 않습니다. 다시 시도해주세요.</string>
+    <string name="unknown_exception_occur">알 수 없는 에러가 발생했습니다.</string>
+    <string name="unknown_host_exception_occur">인터넷이 연결되어 있지 않거나, 페쇄망 호스트에 연결을 시도했습니다.</string>
 </resources>