//License: GPL. See README for details.
package org.openstreetmap.josm.io;
import static org.openstreetmap.josm.tools.I18n.tr;
import static org.openstreetmap.josm.tools.I18n.trn;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StringReader;
import java.io.StringWriter;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.SocketTimeoutException;
import java.net.URL;
import java.net.UnknownHostException;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.Changeset;
import org.openstreetmap.josm.data.osm.IPrimitive;
import org.openstreetmap.josm.data.osm.OsmPrimitiveType;
import org.openstreetmap.josm.gui.layer.ImageryLayer;
import org.openstreetmap.josm.gui.layer.Layer;
import org.openstreetmap.josm.gui.progress.NullProgressMonitor;
import org.openstreetmap.josm.gui.progress.ProgressMonitor;
import org.openstreetmap.josm.tools.CheckParameterUtil;
import org.openstreetmap.josm.tools.Utils;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.helpers.DefaultHandler;
/**
* Class that encapsulates the communications with the OSM API.
*
* All interaction with the server-side OSM API should go through this class.
*
* It is conceivable to extract this into an interface later and create various
* classes implementing the interface, to be able to talk to various kinds of servers.
*
*/
public class OsmApi extends OsmConnection {
/**
* Maximum number of retries to send a request in case of HTTP 500 errors or timeouts
*/
public static final int DEFAULT_MAX_NUM_RETRIES = 5;
/**
* Maximum number of concurrent download threads, imposed by
*
* OSM API usage policy.
* @since 5386
*/
public static final int MAX_DOWNLOAD_THREADS = 2;
/**
* Default URL of the standard OSM API.
* @since 5422
*/
public static final String DEFAULT_API_URL = "http://api.openstreetmap.org/api";
// The collection of instantiated OSM APIs
private static Map instances = new HashMap();
private URL url = null;
/**
* Replies the {@link OsmApi} for a given server URL
*
* @param serverUrl the server URL
* @return the OsmApi
* @throws IllegalArgumentException thrown, if serverUrl is null
*
*/
public static OsmApi getOsmApi(String serverUrl) {
OsmApi api = instances.get(serverUrl);
if (api == null) {
api = new OsmApi(serverUrl);
instances.put(serverUrl,api);
}
return api;
}
/**
* Replies the {@link OsmApi} for the URL given by the preference osm-server.url
*
* @return the OsmApi
*/
public static OsmApi getOsmApi() {
String serverUrl = Main.pref.get("osm-server.url", DEFAULT_API_URL);
return getOsmApi(serverUrl);
}
/** the server URL */
private String serverUrl;
/**
* Object describing current changeset
*/
private Changeset changeset;
/**
* API version used for server communications
*/
private String version = null;
/** the api capabilities */
private Capabilities capabilities = new Capabilities();
/**
* true if successfully initialized
*/
private boolean initialized = false;
/**
* A parser for the "capabilities" response XML
*/
private class CapabilitiesParser extends DefaultHandler {
@Override
public void startDocument() throws SAXException {
capabilities.clear();
}
@Override public void startElement(String namespaceURI, String localName, String qName, Attributes atts) throws SAXException {
for (int i=0; i< atts.getLength(); i++) {
capabilities.put(qName, atts.getQName(i), atts.getValue(i));
}
}
}
/**
* creates an OSM api for a specific server URL
*
* @param serverUrl the server URL. Must not be null
* @throws IllegalArgumentException thrown, if serverUrl is null
*/
protected OsmApi(String serverUrl) {
CheckParameterUtil.ensureParameterNotNull(serverUrl, "serverUrl");
this.serverUrl = serverUrl;
}
/**
* Replies the OSM protocol version we use to talk to the server.
* @return protocol version, or null if not yet negotiated.
*/
public String getVersion() {
return version;
}
/**
* Replies the host name of the server URL.
* @return the host name of the server URL, or null if the server URL is malformed.
*/
public String getHost() {
String host = null;
try {
host = (new URL(serverUrl)).getHost();
} catch (MalformedURLException e) {
Main.warn(e);
}
return host;
}
private class CapabilitiesCache extends CacheCustomContent {
ProgressMonitor monitor;
boolean fastFail;
public CapabilitiesCache(ProgressMonitor monitor, boolean fastFail) {
super("capabilities" + getBaseUrl().hashCode(), CacheCustomContent.INTERVAL_WEEKLY);
this.monitor = monitor;
this.fastFail = fastFail;
}
@Override
protected byte[] updateData() throws OsmTransferException {
return sendRequest("GET", "capabilities", null, monitor, false, fastFail).getBytes();
}
}
/**
* Initializes this component by negotiating a protocol version with the server.
*
* @param monitor the progress monitor
* @throws OsmTransferCanceledException If the initialisation has been cancelled by user.
* @throws OsmApiInitializationException If any other exception occurs. Use getCause() to get the original exception.
*/
public void initialize(ProgressMonitor monitor) throws OsmTransferCanceledException, OsmApiInitializationException {
initialize(monitor, false);
}
/**
* Initializes this component by negotiating a protocol version with the server, with the ability to control the timeout.
*
* @param monitor the progress monitor
* @param fastFail true to request quick initialisation with a small timeout (more likely to throw exception)
* @throws OsmTransferCanceledException If the initialisation has been cancelled by user.
* @throws OsmApiInitializationException If any other exception occurs. Use getCause() to get the original exception.
*/
public void initialize(ProgressMonitor monitor, boolean fastFail) throws OsmTransferCanceledException, OsmApiInitializationException {
if (initialized)
return;
cancel = false;
try {
CapabilitiesCache cache = new CapabilitiesCache(monitor, fastFail);
try {
initializeCapabilities(cache.updateIfRequiredString());
} catch (SAXParseException parseException) {
// XML parsing may fail if JOSM previously stored a corrupted capabilities document (see #8278)
// In that case, force update and try again
initializeCapabilities(cache.updateForceString());
}
if (capabilities.supportsVersion("0.6")) {
version = "0.6";
} else {
Main.error(tr("This version of JOSM is incompatible with the configured server."));
Main.error(tr("It supports protocol version 0.6, while the server says it supports {0} to {1}.",
capabilities.get("version", "minimum"), capabilities.get("version", "maximum")));
initialized = false; // FIXME gets overridden by next assignment
}
initialized = true;
/* This is an interim solution for openstreetmap.org not currently
* transmitting their imagery blacklist in the capabilities call.
* remove this as soon as openstreetmap.org adds blacklists.
* If you want to update this list, please ask for update of
* http://trac.openstreetmap.org/ticket/5024
* This list should not be maintained by each OSM editor (see #9210) */
if (this.serverUrl.matches(".*openstreetmap.org/api.*") && capabilities.getImageryBlacklist().isEmpty())
{
capabilities.put("blacklist", "regex", ".*\\.google\\.com/.*");
capabilities.put("blacklist", "regex", ".*209\\.85\\.2\\d\\d.*");
capabilities.put("blacklist", "regex", ".*209\\.85\\.1[3-9]\\d.*");
capabilities.put("blacklist", "regex", ".*209\\.85\\.12[89].*");
}
/* This checks if there are any layers currently displayed that
* are now on the blacklist, and removes them. This is a rare
* situation - probably only occurs if the user changes the API URL
* in the preferences menu. Otherwise they would not have been able
* to load the layers in the first place becuase they would have
* been disabled! */
if (Main.isDisplayingMapView()) {
for (Layer l : Main.map.mapView.getLayersOfType(ImageryLayer.class)) {
if (((ImageryLayer) l).getInfo().isBlacklisted()) {
Main.info(tr("Removed layer {0} because it is not allowed by the configured API.", l.getName()));
Main.main.removeLayer(l);
}
}
}
} catch (OsmTransferCanceledException e) {
throw e;
} catch (OsmTransferException e) {
initialized = false;
Main.addNetworkError(url, Utils.getRootCause(e));
throw new OsmApiInitializationException(e);
} catch (Exception e) {
initialized = false;
throw new OsmApiInitializationException(e);
}
}
private void initializeCapabilities(String xml) throws SAXException, IOException, ParserConfigurationException {
InputSource inputSource = new InputSource(new StringReader(xml));
SAXParserFactory.newInstance().newSAXParser().parse(inputSource, new CapabilitiesParser());
}
/**
* Makes an XML string from an OSM primitive. Uses the OsmWriter class.
* @param o the OSM primitive
* @param addBody true to generate the full XML, false to only generate the encapsulating tag
* @return XML string
*/
private String toXml(IPrimitive o, boolean addBody) {
StringWriter swriter = new StringWriter();
OsmWriter osmWriter = OsmWriterFactory.createOsmWriter(new PrintWriter(swriter), true, version);
swriter.getBuffer().setLength(0);
osmWriter.setWithBody(addBody);
osmWriter.setChangeset(changeset);
osmWriter.header();
o.accept(osmWriter);
osmWriter.footer();
osmWriter.flush();
return swriter.toString();
}
/**
* Makes an XML string from an OSM primitive. Uses the OsmWriter class.
* @param s the changeset
* @return XML string
*/
private String toXml(Changeset s) {
StringWriter swriter = new StringWriter();
OsmWriter osmWriter = OsmWriterFactory.createOsmWriter(new PrintWriter(swriter), true, version);
swriter.getBuffer().setLength(0);
osmWriter.header();
osmWriter.visit(s);
osmWriter.footer();
osmWriter.flush();
return swriter.toString();
}
/**
* Returns the base URL for API requests, including the negotiated version number.
* @return base URL string
*/
public String getBaseUrl() {
StringBuilder rv = new StringBuilder(serverUrl);
if (version != null) {
rv.append("/");
rv.append(version);
}
rv.append("/");
// this works around a ruby (or lighttpd) bug where two consecutive slashes in
// an URL will cause a "404 not found" response.
int p; while ((p = rv.indexOf("//", rv.indexOf("://")+2)) > -1) { rv.delete(p, p + 1); }
return rv.toString();
}
/**
* Creates an OSM primitive on the server. The OsmPrimitive object passed in
* is modified by giving it the server-assigned id.
*
* @param osm the primitive
* @param monitor the progress monitor
* @throws OsmTransferException if something goes wrong
*/
public void createPrimitive(IPrimitive osm, ProgressMonitor monitor) throws OsmTransferException {
String ret = "";
try {
ensureValidChangeset();
initialize(monitor);
ret = sendRequest("PUT", OsmPrimitiveType.from(osm).getAPIName()+"/create", toXml(osm, true),monitor);
osm.setOsmId(Long.parseLong(ret.trim()), 1);
osm.setChangesetId(getChangeset().getId());
} catch(NumberFormatException e){
throw new OsmTransferException(tr("Unexpected format of ID replied by the server. Got ''{0}''.", ret));
}
}
/**
* Modifies an OSM primitive on the server.
*
* @param osm the primitive. Must not be null.
* @param monitor the progress monitor
* @throws OsmTransferException if something goes wrong
*/
public void modifyPrimitive(IPrimitive osm, ProgressMonitor monitor) throws OsmTransferException {
String ret = null;
try {
ensureValidChangeset();
initialize(monitor);
// normal mode (0.6 and up) returns new object version.
ret = sendRequest("PUT", OsmPrimitiveType.from(osm).getAPIName()+"/" + osm.getId(), toXml(osm, true), monitor);
osm.setOsmId(osm.getId(), Integer.parseInt(ret.trim()));
osm.setChangesetId(getChangeset().getId());
osm.setVisible(true);
} catch(NumberFormatException e) {
throw new OsmTransferException(tr("Unexpected format of new version of modified primitive ''{0}''. Got ''{1}''.", osm.getId(), ret));
}
}
/**
* Deletes an OSM primitive on the server.
* @param osm the primitive
* @param monitor the progress monitor
* @throws OsmTransferException if something goes wrong
*/
public void deletePrimitive(IPrimitive osm, ProgressMonitor monitor) throws OsmTransferException {
ensureValidChangeset();
initialize(monitor);
// can't use a the individual DELETE method in the 0.6 API. Java doesn't allow
// submitting a DELETE request with content, the 0.6 API requires it, however. Falling back
// to diff upload.
//
uploadDiff(Collections.singleton(osm), monitor.createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false));
}
/**
* Creates a new changeset based on the keys in changeset
. If this
* method succeeds, changeset.getId() replies the id the server assigned to the new
* changeset
*
* The changeset must not be null, but its key/value-pairs may be empty.
*
* @param changeset the changeset toe be created. Must not be null.
* @param progressMonitor the progress monitor
* @throws OsmTransferException signifying a non-200 return code, or connection errors
* @throws IllegalArgumentException thrown if changeset is null
*/
public void openChangeset(Changeset changeset, ProgressMonitor progressMonitor) throws OsmTransferException {
CheckParameterUtil.ensureParameterNotNull(changeset, "changeset");
try {
progressMonitor.beginTask((tr("Creating changeset...")));
initialize(progressMonitor);
String ret = "";
try {
ret = sendRequest("PUT", "changeset/create", toXml(changeset),progressMonitor);
changeset.setId(Integer.parseInt(ret.trim()));
changeset.setOpen(true);
} catch(NumberFormatException e){
throw new OsmTransferException(tr("Unexpected format of ID replied by the server. Got ''{0}''.", ret));
}
progressMonitor.setCustomText((tr("Successfully opened changeset {0}",changeset.getId())));
} finally {
progressMonitor.finishTask();
}
}
/**
* Updates a changeset with the keys in changesetUpdate
. The changeset must not
* be null and id > 0 must be true.
*
* @param changeset the changeset to update. Must not be null.
* @param monitor the progress monitor. If null, uses the {@link NullProgressMonitor#INSTANCE}.
*
* @throws OsmTransferException if something goes wrong.
* @throws IllegalArgumentException if changeset is null
* @throws IllegalArgumentException if changeset.getId() <= 0
*
*/
public void updateChangeset(Changeset changeset, ProgressMonitor monitor) throws OsmTransferException {
CheckParameterUtil.ensureParameterNotNull(changeset, "changeset");
if (monitor == null) {
monitor = NullProgressMonitor.INSTANCE;
}
if (changeset.getId() <= 0)
throw new IllegalArgumentException(tr("Changeset ID > 0 expected. Got {0}.", changeset.getId()));
try {
monitor.beginTask(tr("Updating changeset..."));
initialize(monitor);
monitor.setCustomText(tr("Updating changeset {0}...", changeset.getId()));
sendRequest(
"PUT",
"changeset/" + changeset.getId(),
toXml(changeset),
monitor
);
} catch(ChangesetClosedException e) {
e.setSource(ChangesetClosedException.Source.UPDATE_CHANGESET);
throw e;
} catch(OsmApiException e) {
if (e.getResponseCode() == HttpURLConnection.HTTP_CONFLICT && ChangesetClosedException.errorHeaderMatchesPattern(e.getErrorHeader()))
throw new ChangesetClosedException(e.getErrorHeader(), ChangesetClosedException.Source.UPDATE_CHANGESET);
throw e;
} finally {
monitor.finishTask();
}
}
/**
* Closes a changeset on the server. Sets changeset.setOpen(false) if this operation succeeds.
*
* @param changeset the changeset to be closed. Must not be null. changeset.getId() > 0 required.
* @param monitor the progress monitor. If null, uses {@link NullProgressMonitor#INSTANCE}
*
* @throws OsmTransferException if something goes wrong.
* @throws IllegalArgumentException thrown if changeset is null
* @throws IllegalArgumentException thrown if changeset.getId() <= 0
*/
public void closeChangeset(Changeset changeset, ProgressMonitor monitor) throws OsmTransferException {
CheckParameterUtil.ensureParameterNotNull(changeset, "changeset");
if (monitor == null) {
monitor = NullProgressMonitor.INSTANCE;
}
if (changeset.getId() <= 0)
throw new IllegalArgumentException(tr("Changeset ID > 0 expected. Got {0}.", changeset.getId()));
try {
monitor.beginTask(tr("Closing changeset..."));
initialize(monitor);
/* send "\r\n" instead of empty string, so we don't send zero payload - works around bugs
in proxy software */
sendRequest("PUT", "changeset" + "/" + changeset.getId() + "/close", "\r\n", monitor);
changeset.setOpen(false);
} finally {
monitor.finishTask();
}
}
/**
* Uploads a list of changes in "diff" form to the server.
*
* @param list the list of changed OSM Primitives
* @param monitor the progress monitor
* @return list of processed primitives
* @throws OsmTransferException if something is wrong
*/
public Collection uploadDiff(Collection extends IPrimitive> list, ProgressMonitor monitor) throws OsmTransferException {
try {
monitor.beginTask("", list.size() * 2);
if (changeset == null)
throw new OsmTransferException(tr("No changeset present for diff upload."));
initialize(monitor);
// prepare upload request
//
OsmChangeBuilder changeBuilder = new OsmChangeBuilder(changeset);
monitor.subTask(tr("Preparing upload request..."));
changeBuilder.start();
changeBuilder.append(list);
changeBuilder.finish();
String diffUploadRequest = changeBuilder.getDocument();
// Upload to the server
//
monitor.indeterminateSubTask(
trn("Uploading {0} object...", "Uploading {0} objects...", list.size(), list.size()));
String diffUploadResponse = sendRequest("POST", "changeset/" + changeset.getId() + "/upload", diffUploadRequest,monitor);
// Process the response from the server
//
DiffResultProcessor reader = new DiffResultProcessor(list);
reader.parse(diffUploadResponse, monitor.createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false));
return reader.postProcess(
getChangeset(),
monitor.createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false)
);
} catch(OsmTransferException e) {
throw e;
} catch(OsmDataParsingException e) {
throw new OsmTransferException(e);
} finally {
monitor.finishTask();
}
}
private void sleepAndListen(int retry, ProgressMonitor monitor) throws OsmTransferCanceledException {
Main.info(tr("Waiting 10 seconds ... "));
for (int i=0; i < 10; i++) {
if (monitor != null) {
monitor.setCustomText(tr("Starting retry {0} of {1} in {2} seconds ...", getMaxRetries() - retry,getMaxRetries(), 10-i));
}
if (cancel)
throw new OsmTransferCanceledException();
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
Main.warn("InterruptedException in "+getClass().getSimpleName()+" during sleep");
}
}
Main.info(tr("OK - trying again."));
}
/**
* Replies the max. number of retries in case of 5XX errors on the server
*
* @return the max number of retries
*/
protected int getMaxRetries() {
int ret = Main.pref.getInteger("osm-server.max-num-retries", DEFAULT_MAX_NUM_RETRIES);
return Math.max(ret,0);
}
/**
* Determines if JOSM is configured to access OSM API via OAuth
* @return {@code true} if JOSM is configured to access OSM API via OAuth, {@code false} otherwise
* @since 6349
*/
public static final boolean isUsingOAuth() {
return "oauth".equals(Main.pref.get("osm-server.auth-method", "basic"));
}
protected final String sendRequest(String requestMethod, String urlSuffix,String requestBody, ProgressMonitor monitor) throws OsmTransferException {
return sendRequest(requestMethod, urlSuffix, requestBody, monitor, true, false);
}
/**
* Generic method for sending requests to the OSM API.
*
* This method will automatically re-try any requests that are answered with a 5xx
* error code, or that resulted in a timeout exception from the TCP layer.
*
* @param requestMethod The http method used when talking with the server.
* @param urlSuffix The suffix to add at the server url, not including the version number,
* but including any object ids (e.g. "/way/1234/history").
* @param requestBody the body of the HTTP request, if any.
* @param monitor the progress monitor
* @param doAuthenticate set to true, if the request sent to the server shall include authentication
* credentials;
* @param fastFail true to request a short timeout
*
* @return the body of the HTTP response, if and only if the response code was "200 OK".
* @throws OsmTransferException if the HTTP return code was not 200 (and retries have
* been exhausted), or rewrapping a Java exception.
*/
protected final String sendRequest(String requestMethod, String urlSuffix,String requestBody, ProgressMonitor monitor, boolean doAuthenticate, boolean fastFail) throws OsmTransferException {
StringBuilder responseBody = new StringBuilder();
int retries = fastFail ? 0 : getMaxRetries();
while(true) { // the retry loop
try {
url = new URL(new URL(getBaseUrl()), urlSuffix);
Main.info(requestMethod + " " + url + "... ");
// fix #5369, see http://www.tikalk.com/java/forums/httpurlconnection-disable-keep-alive
activeConnection = Utils.openHttpConnection(url, false);
activeConnection.setConnectTimeout(fastFail ? 1000 : Main.pref.getInteger("socket.timeout.connect",15)*1000);
if (fastFail) {
activeConnection.setReadTimeout(1000);
}
activeConnection.setRequestMethod(requestMethod);
if (doAuthenticate) {
addAuth(activeConnection);
}
if (requestMethod.equals("PUT") || requestMethod.equals("POST") || requestMethod.equals("DELETE")) {
activeConnection.setDoOutput(true);
activeConnection.setRequestProperty("Content-type", "text/xml");
OutputStream out = activeConnection.getOutputStream();
// It seems that certain bits of the Ruby API are very unhappy upon
// receipt of a PUT/POST message without a Content-length header,
// even if the request has no payload.
// Since Java will not generate a Content-length header unless
// we use the output stream, we create an output stream for PUT/POST
// even if there is no payload.
if (requestBody != null) {
BufferedWriter bwr = new BufferedWriter(new OutputStreamWriter(out, Utils.UTF_8));
try {
bwr.write(requestBody);
bwr.flush();
} finally {
bwr.close();
}
}
Utils.close(out);
}
activeConnection.connect();
Main.info(activeConnection.getResponseMessage());
int retCode = activeConnection.getResponseCode();
if (retCode >= 500) {
if (retries-- > 0) {
sleepAndListen(retries, monitor);
Main.info(tr("Starting retry {0} of {1}.", getMaxRetries() - retries,getMaxRetries()));
continue;
}
}
// populate return fields.
responseBody.setLength(0);
// If the API returned an error code like 403 forbidden, getInputStream
// will fail with an IOException.
InputStream i = null;
try {
i = activeConnection.getInputStream();
} catch (IOException ioe) {
i = activeConnection.getErrorStream();
}
if (i != null) {
// the input stream can be null if both the input and the error stream
// are null. Seems to be the case if the OSM server replies a 401
// Unauthorized, see #3887.
//
BufferedReader in = new BufferedReader(new InputStreamReader(i));
String s;
try {
while((s = in.readLine()) != null) {
responseBody.append(s);
responseBody.append("\n");
}
} finally {
in.close();
}
}
String errorHeader = null;
// Look for a detailed error message from the server
if (activeConnection.getHeaderField("Error") != null) {
errorHeader = activeConnection.getHeaderField("Error");
Main.error("Error header: " + errorHeader);
} else if (retCode != HttpURLConnection.HTTP_OK && responseBody.length()>0) {
Main.error("Error body: " + responseBody);
}
activeConnection.disconnect();
if (Main.isDebugEnabled()) {
Main.debug("RESPONSE: "+ activeConnection.getHeaderFields());
}
errorHeader = errorHeader == null? null : errorHeader.trim();
String errorBody = responseBody.length() == 0? null : responseBody.toString().trim();
switch(retCode) {
case HttpURLConnection.HTTP_OK:
return responseBody.toString();
case HttpURLConnection.HTTP_GONE:
throw new OsmApiPrimitiveGoneException(errorHeader, errorBody);
case HttpURLConnection.HTTP_CONFLICT:
if (ChangesetClosedException.errorHeaderMatchesPattern(errorHeader))
throw new ChangesetClosedException(errorBody, ChangesetClosedException.Source.UPLOAD_DATA);
else
throw new OsmApiException(retCode, errorHeader, errorBody);
case HttpURLConnection.HTTP_FORBIDDEN:
OsmApiException e = new OsmApiException(retCode, errorHeader, errorBody);
e.setAccessedUrl(activeConnection.getURL().toString());
throw e;
default:
throw new OsmApiException(retCode, errorHeader, errorBody);
}
} catch (UnknownHostException e) {
throw new OsmTransferException(e);
} catch (SocketTimeoutException e) {
if (retries-- > 0) {
continue;
}
throw new OsmTransferException(e);
} catch (ConnectException e) {
if (retries-- > 0) {
continue;
}
throw new OsmTransferException(e);
} catch(IOException e) {
throw new OsmTransferException(e);
} catch(OsmTransferCanceledException e) {
throw e;
} catch(OsmTransferException e) {
throw e;
}
}
}
/**
* Replies the API capabilities
*
* @return the API capabilities, or null, if the API is not initialized yet
*/
public Capabilities getCapabilities() {
return capabilities;
}
/**
* Ensures that the current changeset can be used for uploading data
*
* @throws OsmTransferException thrown if the current changeset can't be used for
* uploading data
*/
protected void ensureValidChangeset() throws OsmTransferException {
if (changeset == null)
throw new OsmTransferException(tr("Current changeset is null. Cannot upload data."));
if (changeset.getId() <= 0)
throw new OsmTransferException(tr("ID of current changeset > 0 required. Current ID is {0}.", changeset.getId()));
}
/**
* Replies the changeset data uploads are currently directed to
*
* @return the changeset data uploads are currently directed to
*/
public Changeset getChangeset() {
return changeset;
}
/**
* Sets the changesets to which further data uploads are directed. The changeset
* can be null. If it isn't null it must have been created, i.e. id > 0 is required. Furthermore,
* it must be open.
*
* @param changeset the changeset
* @throws IllegalArgumentException thrown if changeset.getId() <= 0
* @throws IllegalArgumentException thrown if !changeset.isOpen()
*/
public void setChangeset(Changeset changeset) {
if (changeset == null) {
this.changeset = null;
return;
}
if (changeset.getId() <= 0)
throw new IllegalArgumentException(tr("Changeset ID > 0 expected. Got {0}.", changeset.getId()));
if (!changeset.isOpen())
throw new IllegalArgumentException(tr("Open changeset expected. Got closed changeset with id {0}.", changeset.getId()));
this.changeset = changeset;
}
}