Distributed Computing Remote Procedure Call

Transcription

1 Charitha Chanamolu CSE-660 Lab 5 Distributed Computing Remote Procedure Call Script started on Wed 03 May :56:09 PM PDT 1. Created a File name rand.x charitha@charitha-linux:~/documents/lab5 [01;32mcharitha@charitha-linux [00m: [01;34m~/Documents/lab5 [00m$ cat rand.x 2. The content in the rand.x file program RADN_PROG { version RAND_VERS { void INITIALIZE_RANDOM ( long ) = 1; /* service #1 */ double GET_NEXT_RANDOM ( void ) = 2; /* service #2 */ = 1; = 0x ; /* program # */ 3. Generated the program templates. [01;34m~/Documents/lab5 [00m $ rpcgen -C -a rand.x 4. The purpose of switches -C and -a are charitha@charitha-linux: ~/Documents/lab5 [01;34m~/Documents/lab5 [00m$ ls [01;32mcharitha@charitha-linux [00m: lab5script.txt rand_client.c rand.h rand_svc.c Makefile.rand rand_clnt.c rand_server.c rand.x

2 5. Compiled the rand_client.c and rand_server.c [01;34m~/Documents/lab5 [00m$ make -f Makefile.rand 6. We observe that two executable files rand_server and rand_client are generated ~/Documents/lab5 [01;34m~/Documents/lab5 [00m$ ls [00m: lab5script.txt rand_client.c rand_clnt.o rand_server.c rand_svc.o Makefile.rand rand_client.o rand.h rand_server.o rand.x 7. Modified the get_next_random_1_svc() function in rand_server.c [01;34m~/Documents/lab5 [00m$ vi rand_server.c with code double * get_next_random_1_svc(void *argp, struct svc_req *rqstp) { [16;9Hstatic double result; [18;10H*/ [20;9Hreturn &result; 8. Modified rand_client.c [01;34m~/Documents/lab5 [00m$ vi rand_client.c 9. Recompiled the program [01;34m~/Documents/lab5 [00m$ g++ -c rand_server.c [01;34m~/Documents/lab5 [00m$ g++ -c rand_client.c

3 Output: [01;34m~/Documents/lab5 [00m$./rand_server [01;34m~/Documents/lab5 [00m$./rand_client charitha-linux twenty random numbers , , , , , , , , , , , , , , , , , , , Addition Interface.java Java Remote Method Invocation public interface AdditionInterface extends Remote { public double add(double firstnumber, double secondnumber) throws RemoteException; Server.java public class Server { public static void main(string[] argv) { try { Naming.rebind("RmiAddn", new RmiAddition()); System.out.println("Server has started."); catch (Exception e) { System.out.println("Server has been failed: " + e); RmiAddition.java import java.rmi.server.*; public class RmiAddition extends UnicastRemoteObject implements AdditionInterface {

4 public RmiAddition() throws RemoteException public double add(double firstnumber, double secondnumber) throws RemoteException { return firstnumber + secondnumber; Client.java import java.rmi.naming; import java.util.scanner; public class Client { public static void main(string[] argv) { Scanner reader = new Scanner(System.in); System.out.print("first number: "); double input1 = reader.nextint(); System.out.print("second number: "); double input2 = reader.nextint(); double result; try { AdditionInterface interfaceobj = (AdditionInterface) Naming.lookup("rmi://" + argv[0] + "/RmiAddn"); result = interfaceobj.add(input1, input2); System.out.printf("The sum is: %f\n", result); catch (Exception e) { System.out.println("Error in Addition: " + e); Output: Server [ @jb rmi]$ /usr/java/jdk1.8.0_121/jre/bin/rmiregistry & [1] [ @jb rmi]$ java Server Server has started. =================================================================================== Client [ @jb ~]$ ping jb358-22

5 PING jb cse.csusb.edu ( ) 56(84) bytes of data. 64 bytes from jb cse.csusb.edu ( ): icmp_seq=1 ttl=64 time=0.049 ms 64 bytes from jb cse.csusb.edu ( ): icmp_seq=2 ttl=64 time=0.055 ms ^C --- jb cse.csusb.edu ping statistics packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 0.049/0.052/0.055/0.003 ms [ @jb ~]$ cd 660labs/lab5/rmi/ [ @jb rmi]$ java Client first number: 5 second number: 7 The Addition is: Random Numbers Server.java package randomn; //Server.java public class Server { public static void main(string[] argv) { try { Naming.rebind("RANDOMNo", new RmiRandomProg()); System.out.println("Server Started"); catch (Exception e) { System.out.println("Server failed: " + e); Client.java package randomn; //Client.java import java.rmi.naming; public class Client {

6 public static void main(string[] argv) { /* getting the argument from the command line */ int numberargument = argv.length; if (numberargument!= 2 && numberargument!= 4) { System.out.println("Please use this syntax : Server Servername <# outputs> <LowerBound> <UpperBound>"); System.exit(0); int[] randomarray = new int[integer.parseint(argv[1])]; try { RmiRandomInterface randomgenremoteobject = (RmiRandomInterface) Naming.lookup("rmi://" + argv[0] + "/RANDOMNo"); if (numberargument == 2) { randomarray = randomgenremoteobject.generaterandom(integer.parseint(argv[1])); /* if the range is provided */ if (numberargument == 4) { randomarray = randomgenremoteobject.generatenumwithrange(integer.parseint(argv[1]), Integer.parseInt(argv[2]), Integer.parseInt(argv[3])); for (int i = 0; i < Integer.parseInt(argv[1]); i++) { System.out.printf("%d\n", randomarray[i]); catch (Exception e) { System.out.println("Error in Random number Generator: " + e); RmiRandGenInterface.java package randomn; //RmiRandGenInterface.java public interface RmiRandomInterface extends Remote { /** * array of n random numbers RemoteException * if the remote invocation fails. */ public int[] GenerateRandom(int n) throws RemoteException; /** * array of n random numbers within the range min, max RemoteException * if the remote invocation fails.

7 */ public int[] GenerateNumWithRange(int n, int min, int max) throws RemoteException; RmiRandGen.java package randomn; //RmiRandGen.java import java.rmi.remoteexception; import java.rmi.server.unicastremoteobject; import java.util.random; public class RmiRandomProg extends UnicastRemoteObject implements RmiRandomInterface { private static final long serialversionuid = 1L; public RmiRandomProg() throws RemoteException { public int[] GenerateRandom(int n) throws RemoteException { int[] randarray = new int[n]; Random randomgen = new Random(); for (int i = 0; i < n; i++) { randarray[i] = (int) randomgen.nextint( ); return public int[] GenerateNumWithRange(int n, int min, int max) throws RemoteException { int[] randarray = new int[n]; Random randomgen = new Random(); for (int i = 0; i < n; i++) { randarray[i] = min + (int) randomgen.nextint((max - min) + 1); return randarray; Output: Server [ @jb rmi]$ /usr/java/jdk1.8.0_121/jre/bin/rmiregistry & [1] 18888

8 rmi]$ java Server Server has started. Client ~]$ ping jb PING jb cse.csusb.edu ( ) 56(84) bytes of data. 64 bytes from jb cse.csusb.edu ( ): icmp_seq=1 ttl=64 time=0.049 ms 64 bytes from jb cse.csusb.edu ( ): icmp_seq=2 ttl=64 time=0.055 ms ^C --- jb cse.csusb.edu ping statistics packets transmitted, 2 received, 0% packet loss, time 1001ms rtt min/avg/max/mdev = 0.049/0.052/0.055/0.003 ms [ @jb ~]$ cd 660labs/lab5/rmi/ [ @jb rmi]$ java Client