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api: UrlTileSource:

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- add UrlTileSource.getTileUrl(Tile) to create complete url string
- add TileUrlFormatter interface to override default formatter
- remove unused return from sendRequest()
This commit is contained in:
Hannes Janetzek 2014-04-03 16:08:39 +02:00
parent 6b7ccd68c9
commit 85a4bbe125
9 changed files with 121 additions and 106 deletions
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46
vtm-extras/src/org/oscim/tiling/source/mapnik/MapnikVectorTileSource.java
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@ -25,32 +25,34 @@ public class MapnikVectorTileSource extends UrlTileSource {
public MapnikVectorTileSource() {
super("http://d1s11ojcu7opje.cloudfront.net/dev/764e0b8d", "");
setUrlFormatter(new TileUrlFormatter() {
@Override
public String formatTilePath(UrlTileSource tileSource, Tile tile) {
// url formatter for mapbox streets
byte[] hexTable = {
'0', '1', '2', '3',
'4', '5', '6', '7',
'8', '9', 'a', 'b',
'c', 'd', 'e', 'f'
};
StringBuilder sb = new StringBuilder();
sb.append('/');
sb.append(hexTable[(tile.tileX) % 16]);
sb.append(hexTable[(tile.tileY) % 16]);
sb.append('/');
sb.append(tile.zoomLevel);
sb.append('/');
sb.append(tile.tileX);
sb.append('/');
sb.append(tile.tileY);
return sb.toString();
}
});
}
@Override
public ITileDataSource getDataSource() {
return new UrlTileDataSource(this, new TileDecoder(), getHttpEngine());
}
public String formatTilePath(Tile tile) {
// url formatter for mapbox streets
byte[] hexTable = {
'0', '1', '2', '3',
'4', '5', '6', '7',
'8', '9', 'a', 'b',
'c', 'd', 'e', 'f'
};
StringBuilder sb = new StringBuilder();
sb.append('/');
sb.append(hexTable[(tile.tileX) % 16]);
sb.append(hexTable[(tile.tileY) % 16]);
sb.append('/');
sb.append(tile.zoomLevel);
sb.append('/');
sb.append(tile.tileX);
sb.append('/');
sb.append(tile.tileY);
return sb.toString();
}
}

13
vtm-web/src/org/oscim/gdx/emu/org/oscim/tiling/source/LwHttp.java
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@ -17,7 +17,6 @@ package org.oscim.tiling.source;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import org.oscim.core.Tile;
import org.oscim.layers.tile.MapTile;
@ -31,15 +30,12 @@ import com.google.gwt.xhr.client.XMLHttpRequest.ResponseType;
public class LwHttp implements HttpEngine {
//static final Logger log = LoggerFactory.getLogger(LwHttp.class);
private final String mUrlPath;
private XMLHttpRequest mHttpRequest;
private ReadyStateChangeHandler mResponseHandler;
public LwHttp(UrlTileSource tileSource) {
mTileSource = tileSource;
URL url = tileSource.getUrl();
mUrlPath = url.toString();
}
static class Buffer extends InputStream {
@ -72,9 +68,9 @@ public class LwHttp implements HttpEngine {
private UrlTileSource mTileSource;
public boolean sendRequest(MapTile tile, final UrlTileDataSource dataSource) {
public void sendRequest(MapTile tile, final UrlTileDataSource dataSource) {
String url = mUrlPath + mTileSource.formatTilePath(tile);
String url = mTileSource.getTileUrl(tile);
mHttpRequest = XMLHttpRequest.create();
mHttpRequest.open("GET", url);
@ -101,8 +97,6 @@ public class LwHttp implements HttpEngine {
mHttpRequest.setOnReadyStateChange(mResponseHandler);
mHttpRequest.send();
return true;
}
public static class LwHttpFactory implements HttpEngine.Factory {
@ -130,7 +124,6 @@ public class LwHttp implements HttpEngine {
}
@Override
public boolean sendRequest(Tile tile) throws IOException {
return false;
public void sendRequest(Tile tile) throws IOException {
}
}

3
vtm-web/src/org/oscim/gdx/emu/org/oscim/tiling/source/bitmap/BitmapTileSource.java
View File

@ -60,8 +60,7 @@ public class BitmapTileSource extends UrlTileSource {
@Override
public void query(final MapTile tile, final ITileDataSink sink) {
String url = mTileSource.getUrl()
+ BitmapTileSource.this.formatTilePath(tile);
String url = mTileSource.getTileUrl(tile);
SafeUri uri = UriUtils.fromTrustedString(url);

5
vtm-web/src/org/oscim/tiling/source/JsonTileDataSource.java
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@ -59,10 +59,7 @@ public class JsonTileDataSource implements ITileDataSource {
mSink = sink;
try {
String url = mTileSource.getUrl()
+ mTileSource.formatTilePath(tile);
doGet(url);
doGet(mTileSource.getTileUrl(tile));
} catch (Exception e) {
e.printStackTrace();
sink.completed(FAILED);

2
vtm/src/org/oscim/tiling/source/HttpEngine.java
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@ -26,7 +26,7 @@ public interface HttpEngine {
InputStream read() throws IOException;
boolean sendRequest(Tile tile) throws IOException;
void sendRequest(Tile tile) throws IOException;
void close();

55
vtm/src/org/oscim/tiling/source/LwHttp.java
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@ -53,7 +53,7 @@ public class LwHttp implements HttpEngine {
private final String mHost;
private final int mPort;
private int mMaxReq = 0;
private int mMaxRequests = 0;
private Socket mSocket;
private OutputStream mCommandStream;
private Buffer mResponseStream;
@ -66,10 +66,13 @@ public class LwHttp implements HttpEngine {
private final byte[] REQUEST_GET_START;
private final byte[] REQUEST_GET_END;
private final byte[] mRequestBuffer;
private final byte[][] mTilePath;
private final UrlTileSource mTileSource;
private LwHttp(UrlTileSource tileSource, byte[][] tilePath) {
mTilePath = tilePath;
mTileSource = tileSource;
URL url = tileSource.getUrl();
int port = url.getPort();
@ -109,6 +112,7 @@ public class LwHttp implements HttpEngine {
// to avoid a copy in PbfDecoder one could manage the buffer
// array directly and provide access to it.
static class Buffer extends BufferedInputStream {
static final class Buffer extends BufferedInputStream {
OutputStream cache;
int bytesRead = 0;
int bytesWrote;
@ -188,6 +192,7 @@ public class LwHttp implements HttpEngine {
if (marked >= 0)
bytesRead = marked;
/* TODO could check if the mark is already invalid */
super.reset();
}
@ -323,17 +328,19 @@ public class LwHttp implements HttpEngine {
}
@Override
public boolean sendRequest(Tile tile) throws IOException {
public void sendRequest(Tile tile) throws IOException {
if (mSocket != null) {
if (mMaxReq-- <= 0)
if (--mMaxRequests < 0)
close();
else if (System.nanoTime() - mLastRequest > RESPONSE_TIMEOUT)
close();
else {
try {
if (mResponseStream.available() > 0)
if (mResponseStream.available() > 0) {
log.debug("still bytes available");
close();
}
} catch (IOException e) {
log.debug(e.getMessage());
close();
@ -346,36 +353,32 @@ public class LwHttp implements HttpEngine {
lwHttpConnect();
/* TODO parse from header */
mMaxReq = RESPONSE_EXPECTED_LIVES;
mMaxRequests = RESPONSE_EXPECTED_LIVES;
}
byte[] request = mRequestBuffer;
int pos = REQUEST_GET_START.length;
pos = formatTilePath(tile, request, pos);
int len = REQUEST_GET_END.length;
System.arraycopy(REQUEST_GET_END, 0, request, pos, len);
pos = formatTilePath(tile, mRequestBuffer, pos);
System.arraycopy(REQUEST_GET_END, 0, mRequestBuffer, pos, len);
len += pos;
if (dbg)
log.debug("request: {}", new String(request, 0, len));
log.debug("request: {}", new String(mRequestBuffer, 0, len));
try {
mCommandStream.write(request, 0, len);
mCommandStream.flush();
return true;
writeRequest(mRequestBuffer, len);
} catch (IOException e) {
log.debug("recreate connection");
close();
/* might throw IOException */
lwHttpConnect();
mCommandStream.write(request, 0, len);
mCommandStream.flush();
writeRequest(mRequestBuffer, len);
}
}
return true;
private void writeRequest(byte[] request, int length) throws IOException {
mCommandStream.write(request, 0, length);
mCommandStream.flush();
}
private boolean lwHttpConnect() throws IOException {
@ -500,10 +503,19 @@ public class LwHttp implements HttpEngine {
* @return new position
*/
private int formatTilePath(Tile tile, byte[] buf, int pos) {
if (mTilePath == null) {
String url = mTileSource.getUrlFormatter()
.formatTilePath(mTileSource, tile);
byte[] b = url.getBytes();
System.arraycopy(b, 0, buf, pos, b.length);
return pos + b.length;
}
for (byte[] b : mTilePath) {
if (b.length == 1) {
if (b[0] == '/') {
buf[pos++] = '/';
continue;
} else if (b[0] == 'X') {
pos = writeInt(tile.tileX, pos, buf);
continue;
@ -527,13 +539,16 @@ public class LwHttp implements HttpEngine {
@Override
public HttpEngine create(UrlTileSource tileSource) {
if (tileSource.getUrlFormatter() != UrlTileSource.URL_FORMATTER)
return new LwHttp(tileSource, null);
/* use optimized formatter replacing the default */
if (mTilePath == null) {
String[] path = tileSource.getTilePath();
mTilePath = new byte[path.length][];
for (int i = 0; i < path.length; i++)
mTilePath[i] = path[i].getBytes();
}
return new LwHttp(tileSource, mTilePath);
}
}

25
vtm/src/org/oscim/tiling/source/OkHttpEngine.java
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@ -21,10 +21,10 @@ import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import org.oscim.core.Tile;
import org.oscim.utils.IOUtils;
import com.squareup.okhttp.OkHttpClient;
@ -57,33 +57,20 @@ public class OkHttpEngine implements HttpEngine {
return inputStream;
}
HttpURLConnection openConnection(Tile tile) throws MalformedURLException {
return mClient.open(new URL(mTileSource.getUrl() +
mTileSource.formatTilePath(tile)));
}
@Override
public boolean sendRequest(Tile tile) throws IOException {
public void sendRequest(Tile tile) throws IOException {
if (tile == null) {
throw new IllegalArgumentException("Tile cannot be null.");
}
URL url = new URL(mTileSource.getTileUrl(tile));
HttpURLConnection conn = mClient.open(url);
final HttpURLConnection connection = openConnection(tile);
inputStream = connection.getInputStream();
return true;
inputStream = conn.getInputStream();
}
@Override
public void close() {
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
IOUtils.closeQuietly(inputStream);
}
@Override

7
vtm/src/org/oscim/tiling/source/UrlTileDataSource.java
View File

@ -74,10 +74,9 @@ public class UrlTileDataSource implements ITileDataSource {
boolean success = false;
TileWriter cacheWriter = null;
try {
InputStream is;
if (!mConn.sendRequest(tile)) {
log.debug("{} Request failed", tile);
} else if ((is = mConn.read()) == null) {
mConn.sendRequest(tile);
InputStream is = mConn.read();
if (is == null) {
log.debug("{} Network Error", tile);
} else {
if (mUseCache) {

71
vtm/src/org/oscim/tiling/source/UrlTileSource.java
View File

@ -26,11 +26,18 @@ import org.oscim.tiling.source.LwHttp.LwHttpFactory;
public abstract class UrlTileSource extends TileSource {
public final static TileUrlFormatter URL_FORMATTER = new DefaultTileUrlFormatter();
private final URL mUrl;
private final String[] mTilePath;
private HttpEngine.Factory mHttpFactory;
private Map<String, String> mRequestHeaders;
private TileUrlFormatter mTileUrlFormatter = URL_FORMATTER;
public interface TileUrlFormatter {
public String formatTilePath(UrlTileSource tileSource, Tile tile);
}
public UrlTileSource(String url, String tilePath, int zoomMin, int zoomMax) {
this(url, tilePath);
@ -72,29 +79,8 @@ public abstract class UrlTileSource extends TileSource {
return mUrl;
}
public String formatTilePath(Tile tile) {
// TODO only use the actual replacement positions.
StringBuilder sb = new StringBuilder();
for (String b : mTilePath) {
if (b.length() == 1) {
switch (b.charAt(0)) {
case 'X':
sb.append(tile.tileX);
continue;
case 'Y':
sb.append(tile.tileY);
continue;
case 'Z':
sb.append(tile.zoomLevel);
continue;
default:
break;
}
}
sb.append(b);
}
return sb.toString();
public String getTileUrl(Tile tile) {
return mUrl + mTileUrlFormatter.formatTilePath(this, tile);
}
public void setHttpEngine(HttpEngine.Factory httpFactory) {
@ -113,11 +99,48 @@ public abstract class UrlTileSource extends TileSource {
return mTilePath;
}
/**
*
*/
public void setUrlFormatter(TileUrlFormatter formatter) {
mTileUrlFormatter = formatter;
}
public TileUrlFormatter getUrlFormatter() {
return mTileUrlFormatter;
}
public HttpEngine getHttpEngine() {
if (mHttpFactory == null) {
mHttpFactory = new LwHttpFactory();
}
return mHttpFactory.create(this);
}
static class DefaultTileUrlFormatter implements TileUrlFormatter {
@Override
public String formatTilePath(UrlTileSource tileSource, Tile tile) {
StringBuilder sb = new StringBuilder();
for (String b : tileSource.getTilePath()) {
if (b.length() == 1) {
switch (b.charAt(0)) {
case 'X':
sb.append(tile.tileX);
continue;
case 'Y':
sb.append(tile.tileY);
continue;
case 'Z':
sb.append(tile.zoomLevel);
continue;
default:
break;
}
}
sb.append(b);
}
return sb.toString();
}
}
}