1 files changed, 187 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/research/Uploader.java b/java/src/com/android/inputmethod/research/Uploader.java
new file mode 100644
index 000000000..14e46cd34
--- /dev/null
+++ b/java/src/com/android/inputmethod/research/Uploader.java
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.inputmethod.research;
+
+import android.Manifest;
+import android.app.AlarmManager;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.pm.PackageManager;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+import android.os.BatteryManager;
+import android.text.TextUtils;
+import android.util.Log;
+
+import com.android.inputmethod.latin.R;
+import com.android.inputmethod.latin.define.ProductionFlag;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileFilter;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.net.HttpURLConnection;
+import java.net.MalformedURLException;
+import java.net.URL;
+
+/**
+ * Manages the uploading of ResearchLog files.
+ */
+public final class Uploader {
+    private static final String TAG = Uploader.class.getSimpleName();
+    private static final boolean DEBUG = false && ProductionFlag.IS_EXPERIMENTAL_DEBUG;
+    // Set IS_INHIBITING_AUTO_UPLOAD to true for local testing
+    private static final boolean IS_INHIBITING_AUTO_UPLOAD = false
+            && ProductionFlag.IS_EXPERIMENTAL_DEBUG;  // Force false for non-debug builds
+    private static final int BUF_SIZE = 1024 * 8;
+
+    private final Context mContext;
+    private final File mFilesDir;
+    private final URL mUrl;
+
+    public Uploader(final Context context) {
+        mContext = context;
+        mFilesDir = context.getFilesDir();
+
+        final String urlString = context.getString(R.string.research_logger_upload_url);
+        if (TextUtils.isEmpty(urlString)) {
+            mUrl = null;
+            return;
+        }
+        URL url = null;
+        try {
+            url = new URL(urlString);
+        } catch (final MalformedURLException e) {
+            Log.e(TAG, "Bad URL for uploading", e);
+        }
+        mUrl = url;
+    }
+
+    public boolean isPossibleToUpload() {
+        return hasUploadingPermission() && mUrl != null && !IS_INHIBITING_AUTO_UPLOAD;
+    }
+
+    private boolean hasUploadingPermission() {
+        final PackageManager packageManager = mContext.getPackageManager();
+        return packageManager.checkPermission(Manifest.permission.INTERNET,
+                mContext.getPackageName()) == PackageManager.PERMISSION_GRANTED;
+    }
+
+    public boolean isConvenientToUpload() {
+        return isExternallyPowered() && hasWifiConnection();
+    }
+
+    private boolean isExternallyPowered() {
+        final Intent intent = mContext.registerReceiver(null, new IntentFilter(
+                Intent.ACTION_BATTERY_CHANGED));
+        final int pluggedState = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
+        return pluggedState == BatteryManager.BATTERY_PLUGGED_AC
+                || pluggedState == BatteryManager.BATTERY_PLUGGED_USB;
+    }
+
+    private boolean hasWifiConnection() {
+        final ConnectivityManager manager =
+                (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
+        final NetworkInfo wifiInfo = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
+        return wifiInfo.isConnected();
+    }
+
+    public void doUpload() {
+        if (mFilesDir == null) {
+            return;
+        }
+        final File[] files = mFilesDir.listFiles(new FileFilter() {
+            @Override
+            public boolean accept(final File pathname) {
+                return pathname.getName().startsWith(ResearchLogger.LOG_FILENAME_PREFIX)
+                        && !pathname.canWrite();
+            }
+        });
+        // TODO: Remove local variable
+        boolean success = true;
+        if (files.length == 0) {
+            success = false;
+        }
+        for (final File file : files) {
+            if (!uploadFile(file)) {
+                success = false;
+            }
+        }
+    }
+
+    private boolean uploadFile(final File file) {
+        if (DEBUG) {
+            Log.d(TAG, "attempting upload of " + file.getAbsolutePath());
+        }
+        boolean success = false;
+        final int contentLength = (int) file.length();
+        HttpURLConnection connection = null;
+        InputStream fileInputStream = null;
+        try {
+            fileInputStream = new FileInputStream(file);
+            connection = (HttpURLConnection) mUrl.openConnection();
+            connection.setRequestMethod("PUT");
+            connection.setDoOutput(true);
+            connection.setFixedLengthStreamingMode(contentLength);
+            final OutputStream outputStream = connection.getOutputStream();
+            final byte[] buf = new byte[BUF_SIZE];
+            int numBytesRead;
+            while ((numBytesRead = fileInputStream.read(buf)) != -1) {
+                outputStream.write(buf, 0, numBytesRead);
+                if (DEBUG) {
+                    Log.d(TAG, new String(buf));
+                }
+            }
+            if (connection.getResponseCode() != HttpURLConnection.HTTP_OK) {
+                Log.d(TAG, "upload failed: " + connection.getResponseCode());
+                final InputStream netInputStream = connection.getInputStream();
+                final BufferedReader reader = new BufferedReader(new InputStreamReader(
+                        netInputStream));
+                String line;
+                while ((line = reader.readLine()) != null) {
+                    Log.d(TAG, "| " + reader.readLine());
+                }
+                reader.close();
+                return success;
+            }
+            file.delete();
+            success = true;
+            if (DEBUG) {
+                Log.d(TAG, "upload successful");
+            }
+        } catch (final IOException e) {
+            Log.e(TAG, "Exception uploading file", e);
+        } finally {
+            if (fileInputStream != null) {
+                try {
+                    fileInputStream.close();
+                } catch (final IOException e) {
+                    Log.e(TAG, "Exception closing uploaded file", e);
+                }
+            }
+            if (connection != null) {
+                connection.disconnect();
+            }
+        }
+        return success;
+    }
+}