added a new content provider that writes app start profiling options to a config file to make the SDK think it was already initialized (sentry-demos#136)

Author: stefanosiano

app/src/main/AndroidManifest.xml

@@ -91,6 +91,12 @@
             android:authorities="${applicationId}.thirdpartycontentprovider"
             android:name=".ThirdPartyContentProvider" />
 
+        <provider
+            android:exported="false"
+            android:authorities="${applicationId}.initcontentprovider"
+            android:initOrder="9999"
+            android:name=".InitContentProvider" />
+
 
     </application>
 

app/src/main/java/com/example/vu/android/InitContentProvider.java

@@ -0,0 +1,105 @@
+package com.example.vu.android;
+
+import static io.sentry.Sentry.APP_START_PROFILING_CONFIG_FILE_NAME;
+
+import android.annotation.SuppressLint;
+import android.content.ContentProvider;
+import android.content.ContentValues;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
+import java.nio.charset.StandardCharsets;
+
+import io.sentry.SentryAppStartProfilingOptions;
+import io.sentry.SentryOptions;
+
+public class InitContentProvider extends ContentProvider {
+
+    @Override
+    public boolean onCreate() {
+
+        final Context context = getContext();
+        if (context == null) {
+            return true;
+        }
+
+        final @NotNull SentryOptions options = createOptions(context);
+        final @NotNull SentryAppStartProfilingOptions appStartProfilingOptions = createAppStartOptions(options);
+        // Manually create all folders required by the SDK to work
+        final @NotNull File cacheDir = new File(context.getCacheDir(), "sentry");
+        final @NotNull File configFile = new File(cacheDir, APP_START_PROFILING_CONFIG_FILE_NAME);
+        cacheDir.mkdirs();
+        new File(options.getProfilingTracesDirPath()).mkdirs();
+
+        // Write option to config file to make the SDK think it was already initialized.
+        try (final OutputStream outputStream = new FileOutputStream(configFile);
+             final Writer writer = new BufferedWriter(new OutputStreamWriter(outputStream, StandardCharsets.UTF_8))) {
+            options.getSerializer().serialize(appStartProfilingOptions, writer);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        return true;
+    }
+
+    @SuppressLint("VisibleForTests")
+    private SentryOptions createOptions(final @NotNull Context context) {
+        SentryOptions options = new SentryOptions();
+        options.setDsn("https://[email protected]/1801383");
+        options.setCacheDirPath(new File(context.getCacheDir(), "sentry").getAbsolutePath());
+        return options;
+    }
+
+    @SuppressLint("VisibleForTests")
+    private SentryAppStartProfilingOptions createAppStartOptions(SentryOptions options) {
+        SentryAppStartProfilingOptions appStartProfilingOptions = new SentryAppStartProfilingOptions();
+        appStartProfilingOptions.setProfileSampled(true);
+        appStartProfilingOptions.setTraceSampled(true);
+        appStartProfilingOptions.setProfileSampleRate(1.0);
+        appStartProfilingOptions.setTraceSampleRate(1.0);
+        appStartProfilingOptions.setProfilingTracesDirPath(options.getProfilingTracesDirPath());
+        appStartProfilingOptions.setProfilingEnabled(true);
+        appStartProfilingOptions.setProfilingTracesHz(options.getProfilingTracesHz());
+        return appStartProfilingOptions;
+    }
+
+    @Nullable
+    @Override
+    public Cursor query(@NonNull Uri uri, @Nullable String[] projection, @Nullable String selection, @Nullable String[] selectionArgs, @Nullable String sortOrder) {
+        return null;
+    }
+
+    @Nullable
+    @Override
+    public String getType(@NonNull Uri uri) {
+        return null;
+    }
+
+    @Nullable
+    @Override
+    public Uri insert(@NonNull Uri uri, @Nullable ContentValues values) {
+        return null;
+    }
+
+    @Override
+    public int delete(@NonNull Uri uri, @Nullable String selection, @Nullable String[] selectionArgs) {
+        return 0;
+    }
+
+    @Override
+    public int update(@NonNull Uri uri, @Nullable ContentValues values, @Nullable String selection, @Nullable String[] selectionArgs) {
+        return 0;
+    }
+}