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/*-
* ============LICENSE_START=======================================================
* org.openecomp.aai
* ================================================================================
* 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.aai.util;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import java.util.UUID;
import org.openecomp.aai.logging.AAILogger;
import org.openecomp.aai.logging.LogLine;
import com.att.eelf.configuration.EELFLogger;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
/**
* This class provides Logger methods for the AAI application
*/
public class AAIPrimaryHost {
protected static AAILogger aaiLogger = new AAILogger(AAIPrimaryHost.class.getName());
protected LogLine logline = new LogLine();
public EELFLogger logger;
private final String isReachable = new String("isReachable");
private final String binPing = new String("binPing");
private final String netcat = new String("netcat");
private final String echo = new String("echo");
private final String DEFAULT_CHECK = new String("aai.primary.filetransfer.");
private String transId = UUID.randomUUID().toString();
private String fromAppId = "AAI-INIT";
/**
* Instantiates a new AAI primary host.
*
* @param transId the trans id
* @param fromAppId the from app id
*/
public AAIPrimaryHost(String transId, String fromAppId) {
this.fromAppId = fromAppId;
this.transId = transId;
}
/**
* Do command.
*
* @param command the command
* @return the int
* @throws Exception the exception
*/
public int doCommand(List<String> command)
throws Exception
{
String s = null;
ProcessBuilder pb = new ProcessBuilder(command);
Process process = pb.start();
BufferedReader stdInput = new BufferedReader(new InputStreamReader(process.getInputStream()));
BufferedReader stdError = new BufferedReader(new InputStreamReader(process.getErrorStream()));
// read the output from the command
//System.out.println("Here is the standard output of the command:\n");
while ((s = stdInput.readLine()) != null)
{
//System.out.println(s);
aaiLogger.debug(logline, "stdout "+ s );
}
// read any errors from the attempted command
System.out.println("Here is the standard error of the command (if any):\n");
while ((s = stdError.readLine()) != null)
{
//System.out.println(s);
aaiLogger.debug(logline, "stderrbbbbbb "+ s );
}
return process.waitFor();
}
/**
* Method amIPrimary.
* @return boolean
*/
public boolean amIPrimary()
{
return amIPrimary( DEFAULT_CHECK );
}
/**
* Am I primary using echo.
*
* @param hostname the hostname
* @param aaiPrimaryCheck the aai primary check
* @param aaiServerList the aai server list
* @return true, if successful
*/
public boolean amIPrimaryUsingEcho( String hostname, String aaiPrimaryCheck, String aaiServerList) {
String methodName = "amIPrimaryUsingEcho";
logline.init("aaigen", transId, fromAppId, methodName);
StringTokenizer st = new StringTokenizer( aaiServerList, "|" );
String host;
String msg = null;
while ( st.hasMoreTokens() ) {
host = st.nextToken();
String portWithEndpoint = aaiPrimaryCheck.substring(aaiPrimaryCheck.indexOf(":"));
//System.out.println( "using portEndpoint: " + portWithEndpoint);
Client client = null;
try {
client = HttpsAuthClient.getTwoWaySSLClient();
}
catch (KeyManagementException kme){
msg = "KeyManagementException in REST call to echo: " + kme.toString();
} catch (Exception e) {
msg = " Exception in REST call to echo: " + e.toString();
}
if ( msg != null ) {
logline.add( "problem using echo " + msg + " no primary found ", aaiServerList );
aaiLogger.info(logline, false, "AAI_7401");
return false;
}
String resource = "https://" + host + portWithEndpoint;
WebResource webResource = client
.resource(resource);
try {
ClientResponse response = webResource.accept("application/json")
.header("X-TransactionId", transId)
.header("X-FromAppId", "PrimaryCheck")
.get(ClientResponse.class);
String output = response.getEntity(String.class);
if (response.getStatus() != 200) {
aaiLogger.debug(logline, "echo status " + response.getStatus() + " echo response "+ output );
logline.add( "unexpected status ", response.getStatus() );
aaiLogger.info(logline, false, "AAI_7402");
} else {
aaiLogger.debug(logline, "echo response from server "+ output );
if ( host.contains(hostname)) {
return true;
}
return false;
}
} catch ( Exception e) {
logline.add( "exception checking primary ", resource );
aaiLogger.info(logline, false, "AAI_4000", e);
}
}
logline.add( "no primary found ", aaiServerList );
aaiLogger.info(logline, false, "AAI_4000");
return false;
}
/**
* Am I primary.
*
* @param checkName the check name
* @return true, if successful
*/
public boolean amIPrimary(String checkName)
{
String methodName = "amIPrimary";
logline.init("aaigen", transId, fromAppId, methodName);
String aaiServerList = null;
String aaiPrimaryCheck = null;
String aaiPingTimeout = null;
String aaiPingCount = null;
int timeout = -1;
String msg = null;
try {
aaiServerList = AAIConfig.get(checkName + "serverlist");
//aaiPrimaryCheck = isReachable;
aaiPrimaryCheck = AAIConfig.get(checkName + "primarycheck");
//String aaiPingTimeout = "5000";
aaiPingTimeout = AAIConfig.get(checkName + "pingtimeout");
timeout = (new Integer(aaiPingTimeout)).intValue();
//aaiPingCount = "5";
aaiPingCount = AAIConfig.get(checkName + "pingcount");
} catch ( Exception e ) {
msg = "missing aaiconfig.properties for primary check, no check is done";
logline.add( "unable to check primary ", msg );
aaiLogger.info(logline, true, "0");
return true;
}
aaiLogger.debug(logline, "checking primary "+ aaiPrimaryCheck + " on " + aaiServerList + " timeout " + timeout );
InetAddress ip;
String hostname = null;
try {
ip = InetAddress.getLocalHost();
if ( ip != null ) {
hostname = ip.getHostName();
if ( hostname != null ) {
if ( !( aaiServerList.contains(hostname) ) )
msg = "host name not found in server list " + hostname;
} else
msg = "InetAddress returned null hostname";
}
} catch (UnknownHostException e) {
e.printStackTrace();
msg = "InetAddress getLocalHost exception " + e.getMessage();
}
if ( ( msg != null ) && !aaiPrimaryCheck.startsWith( "echo1") ) { //for unit testing
logline.add( "unable to check primary ", msg );
aaiLogger.info(logline, true, "0");
return true;
}
if (aaiPrimaryCheck.startsWith(echo)) {
return amIPrimaryUsingEcho( hostname, aaiPrimaryCheck, aaiServerList );
}
StringTokenizer st = new StringTokenizer( aaiServerList, "|" );
String host;
while ( st.hasMoreTokens() ) {
host = st.nextToken();
try {
if ( aaiPrimaryCheck.equals(isReachable)) {
ip = InetAddress.getByName(host);
if ( ip == null ) {
logline.add( "getByName failed ", host );
aaiLogger.info(logline, true, "0");
return true;
}
if ( ip.isReachable(timeout) ) {
aaiLogger.debug(logline, "primary is " + host );
if ( host.contains(hostname)) {
aaiLogger.info(logline, true, "0");
return true;
}
aaiLogger.info(logline, false, "AAI_4000");
return false;
} else {
aaiLogger.debug(logline, "isReachable false for "+ host );
}
} else if ( aaiPrimaryCheck.equals(binPing)) {
List<String> commands = new ArrayList<String>();
commands.add("/bin/ping");
commands.add("-c");
commands.add(aaiPingTimeout);
commands.add(host);
int pingResult = doCommand(commands);
if ( pingResult == 0 ) {
if ( host.contains(hostname)) {
aaiLogger.info(logline, true, "0");
return true;
}
aaiLogger.info(logline, false, "AAI_4000");
return false;
}else {
aaiLogger.debug(logline, "pingResult " + pingResult + "for "+ host );
}
} else if ( aaiPrimaryCheck.equals(netcat)) {
List<String> commands = new ArrayList<String>();
commands.add("/usr/bin/nc");
commands.add("-w");
commands.add(aaiPingCount); // seconds
commands.add(host);
commands.add("22"); // SCP port
int pingResult = doCommand(commands);
if ( pingResult == 0 ) {
if ( host.contains(hostname)) {
aaiLogger.info(logline, true, "0");
return true;
}
aaiLogger.info(logline, false, "AAI_4000");
return false;
}else {
aaiLogger.debug(logline, "netcat " + pingResult + "for "+ host );
}
}
} catch ( Exception e) {
e.printStackTrace();
msg = "processing serverList for host " + host + " exception " + e.getMessage();
logline.add( "no server found ", msg );
aaiLogger.info(logline, false, "AAI_4000");
return false;
}
}
logline.add( "no primary found ", aaiServerList );
aaiLogger.info(logline, false, "AAI_4000");
return false;
}
/**
* Which is primary.
*
* @return the string
*/
public String whichIsPrimary()
{
return whichIsPrimary( DEFAULT_CHECK );
}
/**
* Which is primary using echo.
*
* @param aaiPrimaryCheck the aai primary check
* @param aaiServerList the aai server list
* @return the string
*/
public String whichIsPrimaryUsingEcho( String aaiPrimaryCheck, String aaiServerList) {
String methodName = "whichIsPrimaryUsingEcho";
logline.init("aaigen", transId, fromAppId, methodName);
StringTokenizer st = new StringTokenizer( aaiServerList, "|" );
String host;
String msg = null;
while ( st.hasMoreTokens() ) {
host = st.nextToken();
String portWithEndpoint = aaiPrimaryCheck.substring(aaiPrimaryCheck.indexOf(":"));
//System.out.println( "using portEndpoint: " + portWithEndpoint);
Client client = null;
try {
client = HttpsAuthClient.getTwoWaySSLClient();
}
catch (KeyManagementException kme){
msg = "KeyManagementException in REST call to echo: " + kme.toString();
} catch (Exception e) {
msg = " Exception in REST call to echo: " + e.toString();
}
if ( msg != null ) {
logline.add( "problem using echo " + msg + " no primary found ", aaiServerList );
aaiLogger.info(logline, false, "AAI_7401");
return null;
}
String resource = "https://" + host + portWithEndpoint;
WebResource webResource = client
.resource(resource);
try {
ClientResponse response = webResource.accept("application/json")
.header("X-TransactionId", transId)
.header("X-FromAppId", "PrimaryCheck")
.get(ClientResponse.class);
String output = response.getEntity(String.class);
if (response.getStatus() != 200) {
aaiLogger.debug(logline, "echo status " + response.getStatus() + " echo response "+ output );
logline.add( "unexpected status ", response.getStatus() );
aaiLogger.info(logline, false, "AAI_7402");
} else {
return host;
}
} catch ( Exception e ) {
logline.add( "exception checking primary ", resource );
aaiLogger.info(logline, false, "AAI_4000", e);
}
}
logline.add( "no primary found ", aaiServerList );
aaiLogger.info(logline, false, "AAI_4000");
return null;
}
/**
* Which is primary.
*
* @param checkName the check name
* @return the string
*/
public String whichIsPrimary( String checkName )
{
String methodName = "whichIsPrimary";
logline.init("aaigen", transId, fromAppId, methodName);
String aaiServerList = null;
String aaiPrimaryCheck = null;
String aaiPingTimeout = null;
String aaiPingCount = null;
int timeout = -1;
String msg = null;
try {
aaiServerList = AAIConfig.get(checkName + "serverlist");
aaiPrimaryCheck = AAIConfig.get(checkName + "primarycheck");
} catch ( Exception e ) {
msg = "missing aaiconfig.properties to find primary, returning";
logline.add( "unable to find primary ", msg );
aaiLogger.info(logline, true, "0");
return null;
}
aaiLogger.debug(logline, "finding primary "+ aaiPrimaryCheck + " on " + aaiServerList + " timeout " + timeout );
return whichIsPrimaryUsingEcho( aaiPrimaryCheck, aaiServerList );
}
}
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