migrated the source download to use grpc

TUM-Dev · Sep 16, 2023 · 9ccfbaf · 9ccfbaf
1 parent cbe2dd3
commit 9ccfbaf
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Showing 6 changed files with 34 additions and 24 deletions.
diff --git a/app/src/main/java/de/tum/in/tumcampusapp/api/app/BackendClient.kt b/app/src/main/java/de/tum/in/tumcampusapp/api/app/BackendClient.kt
@@ -1,8 +1,10 @@
 package de.tum.`in`.tumcampusapp.api.app
 
+import com.google.protobuf.Empty
 import de.tum.`in`.tumcampusapp.BuildConfig
 import de.tum.`in`.tumcampusapp.api.backend.CampusGrpc
 import de.tum.`in`.tumcampusapp.api.backend.GetUpdateNoteRequest
+import de.tum.`in`.tumcampusapp.component.ui.news.model.NewsSources
 import de.tum.`in`.tumcampusapp.component.ui.updatenote.model.UpdateNote
 import io.grpc.ManagedChannelBuilder
 import io.grpc.Metadata
@@ -44,6 +46,18 @@ class BackendClient private constructor() {
         )
     }
 
+    /**
+     * getNewsSources calls @callback with an UpdateNote currently in the api
+     * On error, errorCallback is called with an error message.
+     */
+    fun getNewsSources(callback: (List<NewsSources>) -> Unit, errorCallback: (message: io.grpc.StatusRuntimeException) -> Unit) {
+        val response = stub.getNewsSources(Empty.getDefaultInstance())
+        response.runCatching { get() }.fold(
+            onSuccess = { callback(NewsSources.fromProto(it)) },
+            onFailure = { errorCallback(getStatus(it)) }
+        )
+    }
+
     companion object {
         @Volatile
         private var instance: BackendClient? = null

diff --git a/app/src/main/java/de/tum/in/tumcampusapp/api/app/TUMCabeAPIService.java b/app/src/main/java/de/tum/in/tumcampusapp/api/app/TUMCabeAPIService.java
@@ -193,9 +193,6 @@ Call<List<RoomFinderSchedule>> fetchSchedule(@Path("roomId") String archId,
     @GET(API_NEWS + "{lastNewsId}")
     Call<List<News>> getNews(@Path("lastNewsId") String lastNewsId);
 
-    @GET(API_NEWS + "sources")
-    Call<List<NewsSources>> getNewsSources();
-
     @GET(API_NEWS + "alert")
     Observable<NewsAlert> getNewsAlert();
 

diff --git a/app/src/main/java/de/tum/in/tumcampusapp/api/app/TUMCabeClient.java b/app/src/main/java/de/tum/in/tumcampusapp/api/app/TUMCabeClient.java
@@ -335,12 +335,6 @@ public List<News> getNews(String lastNewsId) throws IOException {
                 .body();
     }
 
-    public List<NewsSources> getNewsSources() throws IOException {
-        return service.getNewsSources()
-                .execute()
-                .body();
-    }
-
     public Observable<NewsAlert> getNewsAlert() {
         return service.getNewsAlert();
     }

diff --git a/app/src/main/java/de/tum/in/tumcampusapp/component/ui/news/NewsController.kt b/app/src/main/java/de/tum/in/tumcampusapp/component/ui/news/NewsController.kt
@@ -1,6 +1,7 @@
 package de.tum.`in`.tumcampusapp.component.ui.news
 
 import android.content.Context
+import de.tum.`in`.tumcampusapp.api.app.BackendClient
 import de.tum.`in`.tumcampusapp.api.app.TUMCabeClient
 import de.tum.`in`.tumcampusapp.api.tumonline.CacheControl
 import de.tum.`in`.tumcampusapp.component.notifications.NotificationScheduler
@@ -71,20 +72,13 @@ class NewsController @Inject constructor(
         // Delete all too old items
         newsDao.cleanUp()
 
-        val api = TUMCabeClient.getInstance(context)
+        val client = BackendClient.getInstance()
+        client.getNewsSources(
+            { it.forEach { source -> newsSourcesDao.insert(source) } },
+            { Utils.log(it) }
+        )
 
-        // Load all news sources
-        try {
-            val sources = api.newsSources
-            if (sources != null) {
-                newsSourcesDao.insert(sources)
-            }
-        } catch (e: IOException) {
-            Utils.log(e)
-            return
-        }
-
-        // Load all news since the last sync
+        val api = TUMCabeClient.getInstance(context)
         try {
             val news = api.getNews(getLastId())
             if (news != null) {

diff --git a/app/src/main/java/de/tum/in/tumcampusapp/component/ui/news/model/NewsSources.kt b/app/src/main/java/de/tum/in/tumcampusapp/component/ui/news/model/NewsSources.kt
@@ -4,6 +4,7 @@ import androidx.room.Entity
 import androidx.room.PrimaryKey
 import androidx.room.RoomWarnings
 import com.google.gson.annotations.SerializedName
+import de.tum.`in`.tumcampusapp.api.backend.NewsSourceReply
 
 /**
  * This class contains information about the source of a [News] item.
@@ -26,4 +27,14 @@ data class NewsSources(
 
     val isNewspread: Boolean
         get() = setOf(7, 8, 9, 13).contains(id)
+
+    companion object {
+        fun fromProto(it: NewsSourceReply): List<NewsSources> {
+            return it.sourcesList.map { NewsSources(
+                id = it.source.toInt(),
+                title = it.title,
+                icon = it.icon
+            ) }
+        }
+    }
 }
diff --git a/app/src/main/proto/backend.proto b/app/src/main/proto/backend.proto
@@ -12,11 +12,11 @@ import "google/protobuf/timestamp.proto";
 
 service Campus {
     rpc GetTopNews (google.protobuf.Empty) returns (GetTopNewsReply) { }
-    rpc GetNewsSources (google.protobuf.Empty) returns (NewsSourceArray) { }
+    rpc GetNewsSources (google.protobuf.Empty) returns (NewsSourceReply) { }
     rpc GetUpdateNote (GetUpdateNoteRequest) returns (GetUpdateNoteReply) { }
 }
 
-message NewsSourceArray {
+message NewsSourceReply {
     repeated NewsSource sources = 1;
 }