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/*
* 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.Bundle;
import com.google.android.mobly.snippet.Snippet;
import com.google.android.mobly.snippet.event.EventSnippet;
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) {
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<>();
/** Add the event snippet class which is provided within the Snippet Lib. */
receiverSet.add(EventSnippet.class);
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;
}
}
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