/* See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* Esri Inc. licenses this file to You 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.esri.gpt.catalog.harvest.clients;
import com.esri.gpt.catalog.harvest.clients.exceptions.HRConnectionException;
import com.esri.gpt.catalog.harvest.clients.exceptions.HRInvalidProtocolException;
import com.esri.gpt.catalog.harvest.clients.exceptions.HRInvalidResponseException;
import com.esri.gpt.framework.util.Val;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
/**
* ArcGis client.
* Note, that since 10.0 clients found in this package are no loger in use except
* to perform 'ping' functionality. Therefore, this class implements only neccessary
* functionality and can not be considered as a full implementation of the client.
*/
public class HRArcGisClient extends HRProtectedHttpClient {
/** hostUrl */
private String hostUrl;
/**
* Creates instance of the client.
* @param hostUrl host URL
*/
public HRArcGisClient(String hostUrl) {
this.hostUrl = Val.chkStr(hostUrl);
}
@Override
protected String getHostUrl() {
return hostUrl;
}
@Override
public void ping() throws HRInvalidProtocolException, HRConnectionException, UnsupportedOperationException {
validateProtocol();
ping(createPingString());
}
@Override
public boolean isPingSupported() {
return true;
}
/**
* Checks and verifies connection to the remote repository.
* @param pingString ping string
* @throws HRInvalidProtocolException if provided connection
* definition is incomplete
* @throws HRConnectionException if connection to the remote repository can not
* be established at this moment
*/
private void ping(String pingString)
throws HRInvalidProtocolException, HRConnectionException {
InputStream input = null;
try {
input = openConnection(pingString);
analyzePingResponse(input);
} finally {
if (input != null) {
try {
input.close();
} catch (IOException ignore) {
}
}
}
}
/**
* Analyzes response from the ping request.
* @param response response from the server
* @throws HRInvalidResponseException if response is invalid
*/
private void analyzePingResponse(InputStream response)
throws HRInvalidResponseException {
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(response));
reader.readLine();
reader.close();
} catch (IOException ex) {
throw new HRInvalidResponseException("Invalid response.", ex);
}
}
/**
* Gets connection string
* @return connection string
*/
private String createPingString() {
// remove trailing / or \
String url = getHostUrl().replaceAll("[/\\\\]\\p{Blank}*$", "");
if (isFtp()) {
if (getUserName().length() > 0 && getUserPassword().length() > 0) {
url = FTP_URL_PFX +
getUserName() +
":" +
getUserPassword() +
"@" +
url.substring(FTP_URL_PFX.length());
}
url += "/";
}
return url;
}
}