Small optimization to UpdateRepos

src/full/java/com/topjohnwu/magisk/asyncs/ProcessRepoZip.java

@@ -90,7 +90,6 @@ public class ProcessRepoZip extends ParallelTask<Void, Object, Boolean> {
             HttpURLConnection conn;
             do {
                 conn = WebService.request(mLink, null);
-                if (conn == null) return null;
                 total = conn.getContentLength();
                 if (total < 0)
                     conn.disconnect();

src/full/java/com/topjohnwu/magisk/asyncs/UpdateRepos.java

@@ -1,6 +1,8 @@
 package com.topjohnwu.magisk.asyncs;
 
+import android.database.Cursor;
 import android.os.AsyncTask;
+import android.text.TextUtils;
 
 import com.topjohnwu.magisk.MagiskManager;
 import com.topjohnwu.magisk.ReposFragment;
@@ -11,20 +13,22 @@ import com.topjohnwu.magisk.utils.Utils;
 import com.topjohnwu.magisk.utils.WebService;
 
 import org.json.JSONArray;
+import org.json.JSONException;
 import org.json.JSONObject;
 
-import java.io.File;
 import java.net.HttpURLConnection;
 import java.text.DateFormat;
+import java.text.ParseException;
 import java.text.SimpleDateFormat;
-import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.atomic.AtomicInteger;
 
 public class UpdateRepos extends ParallelTask<Void, Void, Void> {
@@ -35,7 +39,8 @@ public class UpdateRepos extends ParallelTask<Void, Void, Void> {
     private static final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US);
 
     private MagiskManager mm;
-    private List<String> cached, etags, newEtags = new LinkedList<>();
+    private List<String> etags, newEtags = new LinkedList<>();
+    private Set<String> cached;
     private boolean forceUpdate;
     private AtomicInteger taskCount = new AtomicInteger(0);
     final private Object allDone = new Object();
@@ -43,13 +48,6 @@ public class UpdateRepos extends ParallelTask<Void, Void, Void> {
     public UpdateRepos(boolean force) {
         mm = MagiskManager.get();
         mm.repoLoadDone.reset();
-        // Legacy data cleanup
-        File old = new File(mm.getApplicationInfo().dataDir + "/shared_prefs", "RepoMap.xml");
-        if (old.exists() || mm.prefs.getString("repomap", null) != null) {
-            old.delete();
-            mm.prefs.edit().remove("version").remove("repomap").remove(Const.Key.ETAG_KEY).apply();
-            mm.repoDB.clearRepo();
-        }
         forceUpdate = force;
     }
 
@@ -82,75 +80,61 @@ public class UpdateRepos extends ParallelTask<Void, Void, Void> {
         }
     }
 
-    private void loadJSON(String jsonString) throws Exception {
+    private boolean loadJSON(String jsonString) throws JSONException, ParseException {
         JSONArray jsonArray = new JSONArray(jsonString);
 
-        // Empty page, throw error
+        // Empty page, halt
         if (jsonArray.length() == 0)
-            throw new Exception();
+            return false;
 
         for (int i = 0; i < jsonArray.length(); i++) {
             JSONObject rawRepo = jsonArray.getJSONObject(i);
             String id = rawRepo.getString("description");
             String name = rawRepo.getString("name");
             Date date = dateFormat.parse(rawRepo.getString("pushed_at"));
-            final List<String> c = cached;
+            Set<String> set = Collections.synchronizedSet(cached);
             queueTask(() -> {
                 Repo repo = mm.repoDB.getRepo(id);
-                Boolean updated;
                 try {
-                    if (repo == null) {
+                    if (repo == null)
-                        repo = new Repo(name, date);
+                        repo = new Repo(name);
-                        updated = true;
+                    else
-                    } else {
+                        set.remove(id);
-                        // Popout from cached
+                    repo.update(date);
-                        synchronized (c) {
-                            c.remove(id);
-                        }
-                        if (forceUpdate) {
-                            repo.update();
-                            updated = true;
-                        } else {
-                            updated = repo.update(date);
-                        }
-                    }
-                    if (updated) {
                     mm.repoDB.addRepo(repo);
                     publishProgress();
-                    }
                 } catch (Repo.IllegalRepoException e) {
                     Logger.debug(e.getMessage());
                     mm.repoDB.removeRepo(id);
                 }
             });
         }
+        return true;
     }
 
     private boolean loadPage(int page, int mode) {
         Map<String, String> header = new HashMap<>();
-        String etag = (mode == CHECK_ETAG && page < etags.size()) ? etags.get(page) : "";
+        if (mode == CHECK_ETAG && page < etags.size())
-        header.put(Const.Key.IF_NONE_MATCH, etag);
+            header.put(Const.Key.IF_NONE_MATCH, etags.get(page));
         String url = Utils.fmt(Const.Url.REPO_URL, page + 1);
-        HttpURLConnection conn = WebService.request(url, header);
 
         try {
-            if (conn == null)
+            HttpURLConnection conn = WebService.request(url, header);
-                throw new Exception();
             if (conn.getResponseCode() == HttpURLConnection.HTTP_NOT_MODIFIED) {
                 // Current page is not updated, check the next page
-                return page + 1 < etags.size() && loadPage(page + 1, CHECK_ETAG);
+                return loadPage(page + 1, CHECK_ETAG);
             }
-            loadJSON(WebService.getString(conn));
+            if (!loadJSON(WebService.getString(conn)))
+                return mode != CHECK_ETAG;
         } catch (Exception e) {
             e.printStackTrace();
-            // Don't continue
+            return false;
-            return true;
         }
 
         /* If one page is updated, we force update all pages */
 
         // Update ETAG
-        etag = header.get(Const.Key.ETAG_KEY);
+        String etag = header.get(Const.Key.ETAG_KEY);
         etag = etag.substring(etag.indexOf('\"'), etag.lastIndexOf('\"') + 1);
         if (mode == LOAD_PREV) {
             // We are loading a previous page, push the new tag to the front
@@ -188,16 +172,22 @@ public class UpdateRepos extends ParallelTask<Void, Void, Void> {
 
     @Override
     protected Void doInBackground(Void... voids) {
-        etags = new ArrayList<>(Arrays.asList(mm.prefs.getString(Const.Key.ETAG_KEY, "").split(",")));
+        etags = Arrays.asList(mm.prefs.getString(Const.Key.ETAG_KEY, "").split(","));
-        cached = mm.repoDB.getRepoIDList();
+        cached = mm.repoDB.getRepoIDSet();
 
-        if (!loadPage(0, CHECK_ETAG)) {
+        if (loadPage(0, CHECK_ETAG)) {
-            // Nothing changed online
+            waitTasks();
-            if (forceUpdate) {
+
-                for (String id : cached) {
+            // The leftover cached means they are removed from online repo
-                    if (id == null) continue;
+            mm.repoDB.removeRepo(cached);
+
+            // Update ETag
+            mm.prefs.edit().putString(Const.Key.ETAG_KEY, TextUtils.join(",", newEtags)).apply();
+        } else if (forceUpdate) {
+            Cursor c = mm.repoDB.getRawCursor();
+            while (c.moveToNext()) {
+                Repo repo = new Repo(c);
                 queueTask(() -> {
-                        Repo repo = mm.repoDB.getRepo(id);
                     try {
                         repo.update();
                         mm.repoDB.addRepo(repo);
@@ -207,21 +197,7 @@ public class UpdateRepos extends ParallelTask<Void, Void, Void> {
                     }
                 });
             }
-            }
             waitTasks();
-        } else {
-            waitTasks();
-
-            // The leftover cached means they are removed from online repo
-            mm.repoDB.removeRepo(cached);
-
-            // Update ETag
-            StringBuilder etagBuilder = new StringBuilder();
-            for (int i = 0; i < newEtags.size(); ++i) {
-                if (i != 0) etagBuilder.append(",");
-                etagBuilder.append(newEtags.get(i));
-            }
-            mm.prefs.edit().putString(Const.Key.ETAG_KEY, etagBuilder.toString()).apply();
         }
         return null;
     }

src/full/java/com/topjohnwu/magisk/container/Repo.java

@@ -17,10 +17,8 @@ public class Repo extends BaseModule {
     private String repoName;
     private Date mLastUpdate;
 
-    public Repo(String name, Date lastUpdate) throws IllegalRepoException {
+    public Repo(String name) {
-        mLastUpdate = lastUpdate;
         repoName = name;
-        update();
     }
 
     public Repo(Cursor c) {
@@ -48,13 +46,9 @@ public class Repo extends BaseModule {
         }
     }
 
-    public boolean update(Date lastUpdate) throws IllegalRepoException {
+    public void update(Date lastUpdate) throws IllegalRepoException {
-        if (lastUpdate.after(mLastUpdate)) {
         mLastUpdate = lastUpdate;
         update();
-            return true;
-        }
-        return false;
     }
 
     @Override

src/full/java/com/topjohnwu/magisk/database/RepoDatabaseHelper.java

@@ -10,8 +10,8 @@ import com.topjohnwu.magisk.container.Repo;
 import com.topjohnwu.magisk.utils.Const;
 import com.topjohnwu.magisk.utils.Utils;
 
-import java.util.LinkedList;
+import java.util.HashSet;
-import java.util.List;
+import java.util.Set;
 
 public class RepoDatabaseHelper extends SQLiteOpenHelper {
 
@@ -74,7 +74,7 @@ public class RepoDatabaseHelper extends SQLiteOpenHelper {
         mDb.delete(TABLE_NAME, "repo_name=?", new String[] { repo.getRepoName() });
     }
 
-    public void removeRepo(List<String> list) {
+    public void removeRepo(Iterable<String> list) {
         for (String id : list) {
             if (id == null) continue;
             mDb.delete(TABLE_NAME, "id=?", new String[] { id });
@@ -94,6 +94,10 @@ public class RepoDatabaseHelper extends SQLiteOpenHelper {
         return null;
     }
 
+    public Cursor getRawCursor() {
+        return mDb.query(TABLE_NAME, null, null, null, null, null, null);
+    }
+
     public Cursor getRepoCursor() {
         String orderBy = null;
         switch (mm.repoOrder) {
@@ -108,13 +112,13 @@ public class RepoDatabaseHelper extends SQLiteOpenHelper {
                 null, null, orderBy);
     }
 
-    public List<String> getRepoIDList() {
+    public Set<String> getRepoIDSet() {
-        LinkedList<String> ret = new LinkedList<>();
+        HashSet<String> set = new HashSet<>(300);
         try (Cursor c = mDb.query(TABLE_NAME, null, null, null, null, null, null)) {
             while (c.moveToNext()) {
-                ret.add(c.getString(c.getColumnIndex("id")));
+                set.add(c.getString(c.getColumnIndex("id")));
             }
         }
-        return ret;
+        return set;
     }
 }

src/main/java/com/topjohnwu/magisk/utils/WebService.java

@@ -15,9 +15,13 @@ public class WebService {
     }
 
     public static String getString(String url, Map<String, String> header) {
+        try {
             HttpURLConnection conn = request(url, header);
-        if (conn == null) return "";
             return getString(conn);
+        } catch (IOException e) {
+            e.printStackTrace();
+            return "";
+        }
     }
 
     public static String getString(HttpURLConnection conn) {
@@ -40,8 +44,7 @@ public class WebService {
         }
     }
 
-    public static HttpURLConnection request(String address, Map<String, String> header) {
+    public static HttpURLConnection request(String address, Map<String, String> header) throws IOException {
-        try {
         URL url = new URL(address);
 
         HttpURLConnection conn = (HttpURLConnection) url.openConnection();
@@ -65,9 +68,5 @@ public class WebService {
         }
 
         return conn;
-        } catch (Exception e) {
-            e.printStackTrace();
-            return null;
-        }
     }
 }