Merging cxxbridge and bridge packages

Reviewed By: javache

Differential Revision: D5027875

fbshipit-source-id: 47e081069d4219bdb29f63ce8a78c1f31a590da7

ReactAndroid/src/main/java/com/facebook/react/common/DebugServerException.java

@@ -0,0 +1,86 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+package com.facebook.react.devsupport;
+
+import javax.annotation.Nullable;
+
+import java.io.IOException;
+
+import android.text.TextUtils;
+
+import com.facebook.common.logging.FLog;
+import com.facebook.react.common.ReactConstants;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+/**
+ * Tracks errors connecting to or received from the debug derver.
+ * The debug server returns errors as json objects. This exception represents that error.
+ */
+public class DebugServerException extends RuntimeException {
+  private static final String GENERIC_ERROR_MESSAGE =
+      "\n\nTry the following to fix the issue:\n" +
+      "\u2022 Ensure that the packager server is running\n" +
+      "\u2022 Ensure that your device/emulator is connected to your machine and has USB debugging enabled - run 'adb devices' to see a list of connected devices\n" +
+      "\u2022 Ensure Airplane Mode is disabled\n" +
+      "\u2022 If you're on a physical device connected to the same machine, run 'adb reverse tcp:8081 tcp:8081' to forward requests from your device\n" +
+      "\u2022 If your device is on the same Wi-Fi network, set 'Debug server host & port for device' in 'Dev settings' to your machine's IP address and the port of the local dev server - e.g. 10.0.1.1:8081\n\n";
+
+  public static DebugServerException makeGeneric(String reason, Throwable t) {
+    return makeGeneric(reason, "", t);
+  }
+
+  public static DebugServerException makeGeneric(String reason, String extra, Throwable t) {
+    return new DebugServerException(reason + GENERIC_ERROR_MESSAGE + extra, t);
+  }
+
+  private DebugServerException(String description, String fileName, int lineNumber, int column) {
+    super(description + "\n  at " + fileName + ":" + lineNumber + ":" + column);
+  }
+
+  public DebugServerException(String description) {
+    super(description);
+  }
+
+  public DebugServerException(String detailMessage, Throwable throwable) {
+    super(detailMessage, throwable);
+  }
+
+  /**
+   * Parse a DebugServerException from the server json string.
+   * @param str json string returned by the debug server
+   * @return A DebugServerException or null if the string is not of proper form.
+   */
+  @Nullable public static DebugServerException parse(String str) {
+    if (TextUtils.isEmpty(str)) {
+      return null;
+    }
+    try {
+      JSONObject jsonObject = new JSONObject(str);
+      String fullFileName = jsonObject.getString("filename");
+      return new DebugServerException(
+          jsonObject.getString("description"),
+          shortenFileName(fullFileName),
+          jsonObject.getInt("lineNumber"),
+          jsonObject.getInt("column"));
+    } catch (JSONException e) {
+      // I'm not sure how strict this format is for returned errors, or what other errors there can
+      // be, so this may end up being spammy. Can remove it later if necessary.
+      FLog.w(ReactConstants.TAG, "Could not parse DebugServerException from: " + str, e);
+      return null;
+    }
+  }
+
+  private static String shortenFileName(String fullFileName) {
+    String[] parts = fullFileName.split("/");
+    return parts[parts.length - 1];
+  }
+}