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/*-
* ============LICENSE_START=======================================================
* OpenECOMP - org.openecomp.dmaapbc
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.dmaapbc.client;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.ProtocolException;
import java.net.SocketException;
import java.net.URL;
import java.util.ArrayList;
import javax.net.ssl.HttpsURLConnection;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
import org.openecomp.dmaapbc.model.ApiError;
import org.openecomp.dmaapbc.model.DR_Pub;
import org.openecomp.dmaapbc.model.DR_Sub;
import org.openecomp.dmaapbc.model.Feed;
import org.openecomp.dmaapbc.service.DmaapService;
import org.openecomp.dmaapbc.util.RandomInteger;
public class DrProvConnection {
static final Logger logger = Logger.getLogger(DrProvConnection.class);
private String provURL;
private HttpsURLConnection uc;
public DrProvConnection() {
provURL = new DmaapService().getDmaap().getDrProvUrl();
if ( provURL.length() < 1 ) {
logger.error( "Attempting to access PROV before dmaap object is set");
}
}
public boolean makeFeedConnection() {
return makeConnection( provURL );
}
public boolean makeFeedConnection(String feedId) {
return makeConnection( provURL + "/feed/" + feedId );
}
public boolean makeSubConnection( String subURL ) {
String[] parts = subURL.split("/");
String revisedURL = provURL + "/" + parts[3] + "/" + parts[4];
logger.info( "mapping " + subURL + " to " + revisedURL );
return makeConnection( revisedURL );
}
public boolean makeIngressConnection( String feed, String user, String subnet, String nodep ) {
String uri = String.format("/internal/route/ingress/?feed=%s&user=%s&subnet=%s&nodepatt=%s",
feed, user, subnet, nodep );
return makeConnection( provURL + uri );
}
private boolean makeConnection( String pURL ) {
try {
URL u = new URL( pURL );
uc = (HttpsURLConnection) u.openConnection();
uc.setInstanceFollowRedirects(false);
logger.info( "successful connect to " + pURL );
return(true);
} catch (Exception e) {
logger.error("Unexpected error during openConnection of " + pURL );
e.printStackTrace();
return(false);
}
}
private String bodyToString( InputStream is ) {
logger.info( "is=" + is );
StringBuilder sb = new StringBuilder();
BufferedReader br = new BufferedReader( new InputStreamReader(is));
String line;
try {
while ((line = br.readLine()) != null ) {
sb.append( line );
}
} catch (IOException ex ) {
logger.error( "IOexception:" + ex);
}
return sb.toString();
}
public String doPostFeed( Feed postFeed, ApiError err ) {
byte[] postData = postFeed.getBytes();
logger.info( "post fields=" + postData.toString() );
String responsemessage = null;
String responseBody = null;
try {
logger.info( "uc=" + uc );
uc.setRequestMethod("POST");
uc.setRequestProperty("Content-Type", "application/vnd.att-dr.feed");
uc.setRequestProperty( "charset", "utf-8");
uc.setRequestProperty( "X-ATT-DR-ON-BEHALF-OF", postFeed.getOwner() );
uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
uc.setUseCaches(false);
uc.setDoOutput(true);
OutputStream os = null;
int rc = -1;
try {
uc.connect();
os = uc.getOutputStream();
os.write( postData );
} catch (ProtocolException pe) {
// Rcvd error instead of 100-Continue
try {
// work around glitch in Java 1.7.0.21 and likely others
// without this, Java will connect multiple times to the server to run the same request
uc.setDoOutput(false);
} catch (Exception e) {
}
}
rc = uc.getResponseCode();
logger.info( "http response code:" + rc );
responsemessage = uc.getResponseMessage();
logger.info( "responsemessage=" + responsemessage );
if (responsemessage == null) {
// work around for glitch in Java 1.7.0.21 and likely others
// When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
String h0 = uc.getHeaderField(0);
if (h0 != null) {
int i = h0.indexOf(' ');
int j = h0.indexOf(' ', i + 1);
if (i != -1 && j != -1) {
responsemessage = h0.substring(j + 1);
}
}
}
if (rc == 201 ) {
responseBody = bodyToString( uc.getInputStream() );
logger.info( "responseBody=" + responseBody );
} else {
err.setCode( rc );
err.setMessage(responsemessage);
}
} catch (ConnectException ce) {
logger.error("Connection refused " );
err.setCode( 500 );
err.setMessage("Backend connection refused");
} catch (SocketException se) {
logger.error( "Socket exception: unexpected end of file from server" );
err.setCode( 500 );
err.setMessage( "Unable to read response from DR");
} catch (Exception e) {
logger.warn("Unable to read response " );
e.printStackTrace();
try {
err.setCode( uc.getResponseCode());
err.setMessage(uc.getResponseMessage());
} catch (Exception e2) {
err.setCode( 500 );
err.setMessage("Unable to determine response message");
}
}
finally {
try {
uc.disconnect();
} catch ( Exception e ) {}
}
return responseBody;
}
// the POST for /internal/route/ingress doesn't return any data, so needs a different function
public int doIngressPost( ApiError err ) {
String responsemessage = null;
int rc = -1;
try {
uc.setRequestMethod("POST");
// uc.setRequestProperty("Content-Type", "application/vnd.att-dr.feed");
// uc.setRequestProperty( "charset", "utf-8");
// uc.setRequestProperty( "X-ATT-DR-ON-BEHALF-OF", postFeed.getOwner() );
// uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
// uc.setUseCaches(false);
// uc.setDoOutput(true);
OutputStream os = null;
try {
uc.connect();
os = uc.getOutputStream();
} catch (ProtocolException pe) {
// Rcvd error instead of 100-Continue
try {
// work around glitch in Java 1.7.0.21 and likely others
// without this, Java will connect multiple times to the server to run the same request
uc.setDoOutput(false);
} catch (Exception e) {
}
}
rc = uc.getResponseCode();
logger.info( "http response code:" + rc );
responsemessage = uc.getResponseMessage();
logger.info( "responsemessage=" + responsemessage );
if (rc < 200 || rc >= 300 ) {
err.setCode( rc );
err.setMessage(responsemessage);
}
} catch (Exception e) {
System.err.println("Unable to read response " );
e.printStackTrace();
} finally {
try {
uc.disconnect();
} catch ( Exception e ) {}
}
return rc;
}
public String doPostDr_Sub( DR_Sub postSub ) {
logger.info( "entry: doPostDr_Sub() " );
byte[] postData = postSub.getBytes();
logger.info( "post fields=" + postData );
String responsemessage = null;
String responseBody = null;
try {
uc.setRequestMethod("POST");
uc.setRequestProperty("Content-Type", "application/vnd.att-dr.subscription");
uc.setRequestProperty( "charset", "utf-8");
uc.setRequestProperty( "X-ATT-DR-ON-BEHALF-OF", "DGL" );
uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
uc.setUseCaches(false);
uc.setDoOutput(true);
OutputStream os = null;
int rc = -1;
try {
uc.connect();
os = uc.getOutputStream();
os.write( postData );
} catch (ProtocolException pe) {
// Rcvd error instead of 100-Continue
try {
// work around glitch in Java 1.7.0.21 and likely others
// without this, Java will connect multiple times to the server to run the same request
uc.setDoOutput(false);
} catch (Exception e) {
}
}
rc = uc.getResponseCode();
logger.info( "http response code:" + rc );
responsemessage = uc.getResponseMessage();
logger.info( "responsemessage=" + responsemessage );
if (responsemessage == null) {
// work around for glitch in Java 1.7.0.21 and likely others
// When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
String h0 = uc.getHeaderField(0);
if (h0 != null) {
int i = h0.indexOf(' ');
int j = h0.indexOf(' ', i + 1);
if (i != -1 && j != -1) {
responsemessage = h0.substring(j + 1);
}
}
}
if (rc == 201 ) {
responseBody = bodyToString( uc.getInputStream() );
logger.info( "responseBody=" + responseBody );
}
} catch (Exception e) {
System.err.println("Unable to read response " );
e.printStackTrace();
} finally {
try {
uc.disconnect();
} catch ( Exception e ) {}
}
return responseBody;
}
public static void main( String[] args ) throws Exception {
PropertyConfigurator.configure("log4j.properties");
logger.info("Started.");
RandomInteger ri = new RandomInteger(10000);
//String postJSON = String.format("{\"name\": \"dgl feed %d\", \"version\": \"v1.0\", \"description\": \"dgl feed N for testing\", \"authorization\": { \"classification\": \"unclassified\", \"endpoint_addrs\": [],\"endpoint_ids\": [{\"password\": \"test\",\"id\": \"test\"}]}}", ri.next()) ;
int i = ri.next();
Feed tst = new Feed( "dgl feed " + i,
"v1.0",
"dgl feed " + i + "for testing",
"TEST",
"unclassified"
);
ArrayList<DR_Pub> pubs = new ArrayList<DR_Pub>();
pubs.add( new DR_Pub( "centralLocation" ) );
tst.setPubs(pubs);
boolean rc;
DrProvConnection context = new DrProvConnection();
rc = context.makeFeedConnection();
logger.info( "makeFeedConnection returns " + rc);
ApiError err = new ApiError();
if ( rc ) {
String tmp = context.doPostFeed( tst, err );
logger.info( "doPostFeed returns " + tmp);
}
}
public String doPutFeed(Feed putFeed, ApiError err) {
byte[] postData = putFeed.getBytes();
logger.info( "post fields=" + postData.toString() );
String responsemessage = null;
String responseBody = null;
try {
logger.info( "uc=" + uc );
uc.setRequestMethod("PUT");
uc.setRequestProperty("Content-Type", "application/vnd.att-dr.feed");
uc.setRequestProperty( "charset", "utf-8");
uc.setRequestProperty( "X-ATT-DR-ON-BEHALF-OF", putFeed.getOwner() );
uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
uc.setUseCaches(false);
uc.setDoOutput(true);
OutputStream os = null;
int rc = -1;
try {
uc.connect();
os = uc.getOutputStream();
os.write( postData );
} catch (ProtocolException pe) {
// Rcvd error instead of 100-Continue
try {
// work around glitch in Java 1.7.0.21 and likely others
// without this, Java will connect multiple times to the server to run the same request
uc.setDoOutput(false);
} catch (Exception e) {
}
}
rc = uc.getResponseCode();
logger.info( "http response code:" + rc );
responsemessage = uc.getResponseMessage();
logger.info( "responsemessage=" + responsemessage );
if (responsemessage == null) {
// work around for glitch in Java 1.7.0.21 and likely others
// When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
String h0 = uc.getHeaderField(0);
if (h0 != null) {
int i = h0.indexOf(' ');
int j = h0.indexOf(' ', i + 1);
if (i != -1 && j != -1) {
responsemessage = h0.substring(j + 1);
}
}
}
if (rc >= 200 && rc < 300 ) {
responseBody = bodyToString( uc.getInputStream() );
logger.info( "responseBody=" + responseBody );
} else if ( rc == 404 ) {
err.setCode( rc );
err.setFields( "feedid");
String message = "FeedId " + putFeed.getFeedId() + " not found on DR to update. Out-of-sync condition?";
err.setMessage( message );
logger.warn(message);
} else {
err.setCode( rc );
err.setMessage(responsemessage);
}
} catch (ConnectException ce) {
logger.error("Connection refused " );
err.setCode( 500 );
err.setMessage("Backend connection refused");
} catch (SocketException se) {
logger.error( "Socket exception: unexpected end of file from server" );
err.setCode( 500 );
err.setMessage( "Unable to read response from DR");
} catch (Exception e) {
logger.warn("Unable to read response " );
e.printStackTrace();
try {
err.setCode( uc.getResponseCode());
err.setMessage(uc.getResponseMessage());
} catch (Exception e2) {
err.setCode( 500 );
err.setMessage("Unable to determine response message");
}
} finally {
try {
uc.disconnect();
} catch ( Exception e ) {}
}
return responseBody;
}
}
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