1 files changed, 95 insertions, 0 deletions
diff --git a/third_party/sl4a/src/main/java/com/google/android/mobly/snippet/manager/ReflectionSnippetManagerFactory.java b/third_party/sl4a/src/main/java/com/google/android/mobly/snippet/manager/ReflectionSnippetManagerFactory.java
new file mode 100644
index 0000000..eb97481
--- /dev/null
+++ b/third_party/sl4a/src/main/java/com/google/android/mobly/snippet/manager/ReflectionSnippetManagerFactory.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2016 Google Inc.
+ *
+ * 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.google.android.mobly.snippet.manager;
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.os.Build;
+import android.os.Bundle;
+
+import com.google.android.mobly.snippet.Snippet;
+import com.google.android.mobly.snippet.util.Log;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+public class ReflectionSnippetManagerFactory implements SnippetManagerFactory {
+    private static final String METADATA_TAG_NAME = "mobly-snippets";
+
+    private final Context mContext;
+    private final Set<Class<? extends Snippet>> mClasses;
+    private final Map<Integer, SnippetManager> mSnippetManagers;
+
+    public ReflectionSnippetManagerFactory(Context context) {
+        mContext = context;
+        mClasses = loadSnippets();
+        mSnippetManagers = new HashMap<>();
+    }
+
+    @Override
+    public SnippetManager create(Integer UID) {
+        int sdkLevel = Build.VERSION.SDK_INT;
+        SnippetManager manager = new SnippetManager(mClasses);
+        mSnippetManagers.put(UID, manager);
+        return manager;
+    }
+
+    @Override
+    public Map<Integer, SnippetManager> getSnippetManagers() {
+        return Collections.unmodifiableMap(mSnippetManagers);
+    }
+
+    private Set<Class<? extends Snippet>> loadSnippets() {
+        ApplicationInfo appInfo;
+        try {
+            appInfo = mContext
+                    .getPackageManager()
+                    .getApplicationInfo(mContext.getPackageName(), PackageManager.GET_META_DATA);
+        } catch (PackageManager.NameNotFoundException e) {
+            throw new IllegalStateException(
+                    "Failed to find ApplicationInfo with package name: "
+                            + mContext.getPackageName());
+        }
+        Bundle metadata = appInfo.metaData;
+        String snippets = metadata.getString(METADATA_TAG_NAME);
+        if (snippets == null) {
+            throw new IllegalStateException(
+                    "AndroidManifest.xml does not contain a <metadata> tag with "
+                        + "name=\"" + METADATA_TAG_NAME + "\"");
+        }
+        String[] snippetClassNames = snippets.split("\\s*,\\s*");
+        Set<Class<? extends Snippet>> receiverSet = new HashSet<>();
+        for (String snippetClassName : snippetClassNames) {
+            try {
+                Log.i("Trying to load Snippet class: " + snippetClassName);
+                Class<?> snippetClass = Class.forName(snippetClassName);
+                receiverSet.add((Class<? extends Snippet>) snippetClass);
+            } catch (ClassNotFoundException e) {
+                Log.e("Failed to find class " + snippetClassName);
+                throw new RuntimeException(e);
+            }
+        }
+        if (receiverSet.isEmpty()) {
+            throw new IllegalStateException("Found no subclasses of Snippet.");
+        }
+        return receiverSet;
+    }
+}