packages/DocumentsUI/perf-tests/src/com/android/documentsui/StressProvider.java - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2016 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.documentsui;

 import android.content.Context;
 import android.content.pm.ProviderInfo;
 import android.content.res.AssetFileDescriptor;
 import android.database.Cursor;
 import android.database.MatrixCursor.RowBuilder;
 import android.database.MatrixCursor;
 import android.graphics.Point;
 import android.os.CancellationSignal;
 import android.os.FileUtils;
 import android.os.ParcelFileDescriptor;
 import android.provider.DocumentsContract.Document;
 import android.provider.DocumentsContract.Root;
 import android.provider.DocumentsContract;
 import android.provider.DocumentsProvider;

 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Random;

 /**
  * Provider with thousands of files for testing loading time of directories in DocumentsUI.
  * It doesn't support any file operations.
  */
 public class StressProvider extends DocumentsProvider {

     public static final String DEFAULT_AUTHORITY = "com.android.documentsui.stressprovider";

     // Empty root.
     public static final String STRESS_ROOT_0_ID = "STRESS_ROOT_0";

     // Root with thousands of directories.
     public static final String STRESS_ROOT_1_ID = "STRESS_ROOT_1";

     // Root with hundreds of files.
     public static final String STRESS_ROOT_2_ID = "STRESS_ROOT_2";

     private static final String STRESS_ROOT_0_DOC_ID = "STRESS_ROOT_0_DOC";
     private static final String STRESS_ROOT_1_DOC_ID = "STRESS_ROOT_1_DOC";
     private static final String STRESS_ROOT_2_DOC_ID = "STRESS_ROOT_2_DOC";

     private static final int STRESS_ROOT_1_ITEMS = 10000;
     private static final int STRESS_ROOT_2_ITEMS = 300;

     private static final String MIME_TYPE_IMAGE = "image/jpeg";
     private static final long REFERENCE_TIMESTAMP = 1459159369359L;

     private static final String[] DEFAULT_ROOT_PROJECTION = new String[] {
             Root.COLUMN_ROOT_ID, Root.COLUMN_FLAGS, Root.COLUMN_TITLE, Root.COLUMN_DOCUMENT_ID,
             Root.COLUMN_AVAILABLE_BYTES
     };
     private static final String[] DEFAULT_DOCUMENT_PROJECTION = new String[] {
             Document.COLUMN_DOCUMENT_ID, Document.COLUMN_MIME_TYPE, Document.COLUMN_DISPLAY_NAME,
             Document.COLUMN_LAST_MODIFIED, Document.COLUMN_FLAGS, Document.COLUMN_SIZE,
     };

     private String mAuthority = DEFAULT_AUTHORITY;

     // Map from a root document id to children document ids.
     private Map<String, ArrayList<StubDocument>> mChildDocuments = new HashMap<>();

     private Map<String, StubDocument> mDocuments = new HashMap<>();
     private Map<String, StubRoot> mRoots = new HashMap<>();

     @Override
     public void attachInfo(Context context, ProviderInfo info) {
         mAuthority = info.authority;
         super.attachInfo(context, info);
     }

     @Override
     public boolean onCreate() {
         StubDocument document;

         ArrayList<StubDocument> children = new ArrayList<StubDocument>();
         mChildDocuments.put(STRESS_ROOT_1_DOC_ID, children);
         for (int i = 0; i < STRESS_ROOT_1_ITEMS; i++) {
             document = StubDocument.createDirectory(i);
             mDocuments.put(document.id, document);
             children.add(document);
         }

         children = new ArrayList<StubDocument>();
         mChildDocuments.put(STRESS_ROOT_2_DOC_ID, children);
         for (int i = 0; i < STRESS_ROOT_2_ITEMS; i++) {
             try {
                 document = StubDocument.createFile(
                         getContext(), MIME_TYPE_IMAGE,
                         com.android.documentsui.perftests.R.raw.earth_small,
                         STRESS_ROOT_1_ITEMS + i);
             } catch (IOException e) {
                 return false;
             }
             mDocuments.put(document.id, document);
             children.add(document);
         }

         mRoots.put(STRESS_ROOT_0_ID, new StubRoot(STRESS_ROOT_0_ID, STRESS_ROOT_0_DOC_ID));
         mRoots.put(STRESS_ROOT_1_ID, new StubRoot(STRESS_ROOT_1_ID, STRESS_ROOT_1_DOC_ID));
         mRoots.put(STRESS_ROOT_2_ID, new StubRoot(STRESS_ROOT_2_ID, STRESS_ROOT_2_DOC_ID));

         mDocuments.put(STRESS_ROOT_0_DOC_ID, StubDocument.createDirectory(STRESS_ROOT_0_DOC_ID));
         mDocuments.put(STRESS_ROOT_1_DOC_ID, StubDocument.createDirectory(STRESS_ROOT_1_DOC_ID));
         mDocuments.put(STRESS_ROOT_2_DOC_ID, StubDocument.createDirectory(STRESS_ROOT_2_DOC_ID));

         return true;
     }

     @Override
     public Cursor queryRoots(String[] projection) throws FileNotFoundException {
         final MatrixCursor result = new MatrixCursor(DEFAULT_ROOT_PROJECTION);
         for (StubRoot root : mRoots.values()) {
             includeRoot(result, root);
         }
         return result;
     }

     @Override
     public Cursor queryDocument(String documentId, String[] projection)
             throws FileNotFoundException {
         final MatrixCursor result = new MatrixCursor(DEFAULT_DOCUMENT_PROJECTION);
         final StubDocument document = mDocuments.get(documentId);
         includeDocument(result, document);
         return result;
     }

     @Override
     public Cursor queryChildDocuments(String parentDocumentId, String[] projection,
             String sortOrder)
             throws FileNotFoundException {
         final MatrixCursor result = new MatrixCursor(DEFAULT_DOCUMENT_PROJECTION);
         final ArrayList<StubDocument> childDocuments = mChildDocuments.get(parentDocumentId);
         if (childDocuments != null) {
             for (StubDocument document : childDocuments) {
                 includeDocument(result, document);
             }
         }
         return result;
     }

     @Override
     public AssetFileDescriptor openDocumentThumbnail(String docId, Point sizeHint,
             CancellationSignal signal)
             throws FileNotFoundException {
         final StubDocument document = mDocuments.get(docId);
         return getContext().getResources().openRawResourceFd(document.thumbnail);
     }

     @Override
     public ParcelFileDescriptor openDocument(String docId, String mode,
             CancellationSignal signal)
             throws FileNotFoundException {
         throw new UnsupportedOperationException();
     }

     private void includeRoot(MatrixCursor result, StubRoot root) {
         final RowBuilder row = result.newRow();
         row.add(Root.COLUMN_ROOT_ID, root.id);
         row.add(Root.COLUMN_FLAGS, 0);
         row.add(Root.COLUMN_TITLE, root.id);
         row.add(Root.COLUMN_DOCUMENT_ID, root.documentId);
     }

     private void includeDocument(MatrixCursor result, StubDocument document) {
         final RowBuilder row = result.newRow();
         row.add(Document.COLUMN_DOCUMENT_ID, document.id);
         row.add(Document.COLUMN_DISPLAY_NAME, document.id);
         row.add(Document.COLUMN_SIZE, document.size);
         row.add(Document.COLUMN_MIME_TYPE, document.mimeType);
         row.add(Document.COLUMN_FLAGS,
                 document.thumbnail != -1 ? Document.FLAG_SUPPORTS_THUMBNAIL : 0);
         row.add(Document.COLUMN_LAST_MODIFIED, document.lastModified);
     }

     private static String getStubDocumentIdForFile(File file) {
         return file.getAbsolutePath();
     }

     private static class StubDocument {
         final String mimeType;
         final String id;
         final int size;
         final long lastModified;
         final int thumbnail;

         private StubDocument(String mimeType, String id, int size, long lastModified,
                 int thumbnail) {
             this.mimeType = mimeType;
             this.id = id;
             this.size = size;
             this.lastModified = lastModified;
             this.thumbnail = thumbnail;
         }

         public static StubDocument createDirectory(int index) {
             return new StubDocument(
                     DocumentsContract.Document.MIME_TYPE_DIR, createRandomId(index), 0,
                     createRandomTime(index), -1);
         }

         public static StubDocument createDirectory(String id) {
             return new StubDocument(DocumentsContract.Document.MIME_TYPE_DIR, id, 0, 0, -1);
         }

         public static StubDocument createFile(Context context, String mimeType, int thumbnail,
                 int index) throws IOException {
             return new StubDocument(
                     mimeType, createRandomId(index), createRandomSize(index),
                     createRandomTime(index), thumbnail);
         }

         private static String createRandomId(int index) {
             final Random random = new Random(index);
             final StringBuilder builder = new StringBuilder();
             for (int i = 0; i < 20; i++) {
                 builder.append((char) (random.nextInt(96) + 32));
             }
             builder.append(index);  // Append a number to guarantee uniqueness.
             return builder.toString();
         }

         private static int createRandomSize(int index) {
             final Random random = new Random(index);
             return random.nextInt(1024 * 1024 * 100);  // Up to 100 MB.
         }

         private static long createRandomTime(int index) {
             final Random random = new Random(index);
             // Up to 30 days backwards from REFERENCE_TIMESTAMP.
             return REFERENCE_TIMESTAMP - random.nextLong() % 1000L * 60 * 60 * 24 * 30;
         }
     }

     private static class StubRoot {
         final String id;
         final String documentId;

         public StubRoot(String id, String documentId) {
             this.id = id;
             this.documentId = documentId;
         }
     }
 }
	/*
	* Copyright (C) 2016 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.documentsui;

	import android.content.Context;
	import android.content.pm.ProviderInfo;
	import android.content.res.AssetFileDescriptor;
	import android.database.Cursor;
	import android.database.MatrixCursor.RowBuilder;
	import android.database.MatrixCursor;
	import android.graphics.Point;
	import android.os.CancellationSignal;
	import android.os.FileUtils;
	import android.os.ParcelFileDescriptor;
	import android.provider.DocumentsContract.Document;
	import android.provider.DocumentsContract.Root;
	import android.provider.DocumentsContract;
	import android.provider.DocumentsProvider;

	import java.io.File;
	import java.io.FileNotFoundException;
	import java.io.IOException;
	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.Random;

	/**
	* Provider with thousands of files for testing loading time of directories in DocumentsUI.
	* It doesn't support any file operations.
	*/
	public class StressProvider extends DocumentsProvider {

	public static final String DEFAULT_AUTHORITY = "com.android.documentsui.stressprovider";

	// Empty root.
	public static final String STRESS_ROOT_0_ID = "STRESS_ROOT_0";

	// Root with thousands of directories.
	public static final String STRESS_ROOT_1_ID = "STRESS_ROOT_1";

	// Root with hundreds of files.
	public static final String STRESS_ROOT_2_ID = "STRESS_ROOT_2";

	private static final String STRESS_ROOT_0_DOC_ID = "STRESS_ROOT_0_DOC";
	private static final String STRESS_ROOT_1_DOC_ID = "STRESS_ROOT_1_DOC";
	private static final String STRESS_ROOT_2_DOC_ID = "STRESS_ROOT_2_DOC";

	private static final int STRESS_ROOT_1_ITEMS = 10000;
	private static final int STRESS_ROOT_2_ITEMS = 300;

	private static final String MIME_TYPE_IMAGE = "image/jpeg";
	private static final long REFERENCE_TIMESTAMP = 1459159369359L;

	private static final String[] DEFAULT_ROOT_PROJECTION = new String[] {
	Root.COLUMN_ROOT_ID, Root.COLUMN_FLAGS, Root.COLUMN_TITLE, Root.COLUMN_DOCUMENT_ID,
	Root.COLUMN_AVAILABLE_BYTES
	};
	private static final String[] DEFAULT_DOCUMENT_PROJECTION = new String[] {
	Document.COLUMN_DOCUMENT_ID, Document.COLUMN_MIME_TYPE, Document.COLUMN_DISPLAY_NAME,
	Document.COLUMN_LAST_MODIFIED, Document.COLUMN_FLAGS, Document.COLUMN_SIZE,
	};

	private String mAuthority = DEFAULT_AUTHORITY;

	// Map from a root document id to children document ids.
	private Map<String, ArrayList<StubDocument>> mChildDocuments = new HashMap<>();

	private Map<String, StubDocument> mDocuments = new HashMap<>();
	private Map<String, StubRoot> mRoots = new HashMap<>();

	@Override
	public void attachInfo(Context context, ProviderInfo info) {
	mAuthority = info.authority;
	super.attachInfo(context, info);
	}

	@Override
	public boolean onCreate() {
	StubDocument document;

	ArrayList<StubDocument> children = new ArrayList<StubDocument>();
	mChildDocuments.put(STRESS_ROOT_1_DOC_ID, children);
	for (int i = 0; i < STRESS_ROOT_1_ITEMS; i++) {
	document = StubDocument.createDirectory(i);
	mDocuments.put(document.id, document);
	children.add(document);
	}

	children = new ArrayList<StubDocument>();
	mChildDocuments.put(STRESS_ROOT_2_DOC_ID, children);
	for (int i = 0; i < STRESS_ROOT_2_ITEMS; i++) {
	try {
	document = StubDocument.createFile(
	getContext(), MIME_TYPE_IMAGE,
	com.android.documentsui.perftests.R.raw.earth_small,
	STRESS_ROOT_1_ITEMS + i);
	} catch (IOException e) {
	return false;
	}
	mDocuments.put(document.id, document);
	children.add(document);
	}

	mRoots.put(STRESS_ROOT_0_ID, new StubRoot(STRESS_ROOT_0_ID, STRESS_ROOT_0_DOC_ID));
	mRoots.put(STRESS_ROOT_1_ID, new StubRoot(STRESS_ROOT_1_ID, STRESS_ROOT_1_DOC_ID));
	mRoots.put(STRESS_ROOT_2_ID, new StubRoot(STRESS_ROOT_2_ID, STRESS_ROOT_2_DOC_ID));

	mDocuments.put(STRESS_ROOT_0_DOC_ID, StubDocument.createDirectory(STRESS_ROOT_0_DOC_ID));
	mDocuments.put(STRESS_ROOT_1_DOC_ID, StubDocument.createDirectory(STRESS_ROOT_1_DOC_ID));
	mDocuments.put(STRESS_ROOT_2_DOC_ID, StubDocument.createDirectory(STRESS_ROOT_2_DOC_ID));

	return true;
	}

	@Override
	public Cursor queryRoots(String[] projection) throws FileNotFoundException {
	final MatrixCursor result = new MatrixCursor(DEFAULT_ROOT_PROJECTION);
	for (StubRoot root : mRoots.values()) {
	includeRoot(result, root);
	}
	return result;
	}

	@Override
	public Cursor queryDocument(String documentId, String[] projection)
	throws FileNotFoundException {
	final MatrixCursor result = new MatrixCursor(DEFAULT_DOCUMENT_PROJECTION);
	final StubDocument document = mDocuments.get(documentId);
	includeDocument(result, document);
	return result;
	}

	@Override
	public Cursor queryChildDocuments(String parentDocumentId, String[] projection,
	String sortOrder)
	throws FileNotFoundException {
	final MatrixCursor result = new MatrixCursor(DEFAULT_DOCUMENT_PROJECTION);
	final ArrayList<StubDocument> childDocuments = mChildDocuments.get(parentDocumentId);
	if (childDocuments != null) {
	for (StubDocument document : childDocuments) {
	includeDocument(result, document);
	}
	}
	return result;
	}

	@Override
	public AssetFileDescriptor openDocumentThumbnail(String docId, Point sizeHint,
	CancellationSignal signal)
	throws FileNotFoundException {
	final StubDocument document = mDocuments.get(docId);
	return getContext().getResources().openRawResourceFd(document.thumbnail);
	}

	@Override
	public ParcelFileDescriptor openDocument(String docId, String mode,
	CancellationSignal signal)
	throws FileNotFoundException {
	throw new UnsupportedOperationException();
	}

	private void includeRoot(MatrixCursor result, StubRoot root) {
	final RowBuilder row = result.newRow();
	row.add(Root.COLUMN_ROOT_ID, root.id);
	row.add(Root.COLUMN_FLAGS, 0);
	row.add(Root.COLUMN_TITLE, root.id);
	row.add(Root.COLUMN_DOCUMENT_ID, root.documentId);
	}

	private void includeDocument(MatrixCursor result, StubDocument document) {
	final RowBuilder row = result.newRow();
	row.add(Document.COLUMN_DOCUMENT_ID, document.id);
	row.add(Document.COLUMN_DISPLAY_NAME, document.id);
	row.add(Document.COLUMN_SIZE, document.size);
	row.add(Document.COLUMN_MIME_TYPE, document.mimeType);
	row.add(Document.COLUMN_FLAGS,
	document.thumbnail != -1 ? Document.FLAG_SUPPORTS_THUMBNAIL : 0);
	row.add(Document.COLUMN_LAST_MODIFIED, document.lastModified);
	}

	private static String getStubDocumentIdForFile(File file) {
	return file.getAbsolutePath();
	}

	private static class StubDocument {
	final String mimeType;
	final String id;
	final int size;
	final long lastModified;
	final int thumbnail;

	private StubDocument(String mimeType, String id, int size, long lastModified,
	int thumbnail) {
	this.mimeType = mimeType;
	this.id = id;
	this.size = size;
	this.lastModified = lastModified;
	this.thumbnail = thumbnail;
	}

	public static StubDocument createDirectory(int index) {
	return new StubDocument(
	DocumentsContract.Document.MIME_TYPE_DIR, createRandomId(index), 0,
	createRandomTime(index), -1);
	}

	public static StubDocument createDirectory(String id) {
	return new StubDocument(DocumentsContract.Document.MIME_TYPE_DIR, id, 0, 0, -1);
	}

	public static StubDocument createFile(Context context, String mimeType, int thumbnail,
	int index) throws IOException {
	return new StubDocument(
	mimeType, createRandomId(index), createRandomSize(index),
	createRandomTime(index), thumbnail);
	}

	private static String createRandomId(int index) {
	final Random random = new Random(index);
	final StringBuilder builder = new StringBuilder();
	for (int i = 0; i < 20; i++) {
	builder.append((char) (random.nextInt(96) + 32));
	}
	builder.append(index); // Append a number to guarantee uniqueness.
	return builder.toString();
	}

	private static int createRandomSize(int index) {
	final Random random = new Random(index);
	return random.nextInt(1024 * 1024 * 100); // Up to 100 MB.
	}

	private static long createRandomTime(int index) {
	final Random random = new Random(index);
	// Up to 30 days backwards from REFERENCE_TIMESTAMP.
	return REFERENCE_TIMESTAMP - random.nextLong() % 1000L * 60 * 60 * 24 * 30;
	}
	}

	private static class StubRoot {
	final String id;
	final String documentId;

	public StubRoot(String id, String documentId) {
	this.id = id;
	this.documentId = documentId;
	}
	}
	}