Key:

*-An important Item that needs to be finished

B-Initial of person who needs to fix this (Binki)

M-LordofWar needs to fix this

E-normaldotcom needs to fix this

x-finished task

=-Long-term goal

Build

Master

*-Add calls to remotio

 -Write more meat into the pseudo-code main() to pull everything together

 -Write a stub for getting info from the tarball/validifying the tarball. Read distren-job.xml, a file in the tarball, to find out 1. which rendering system to use (that system, e.g. blender/povray, can read more specifics, such as name of file to pass to blender and frames. Options common between different systems will be handled in common as best as possible)

 -Write a stub for publishing file and constructing job description so that the job can be shared

*-Other XML-writing/reading

Slave

 -Fix current bugs

*-Add calls to remoteio, once it works or even before it works

 -Add code to write arguments for exec_blender based on the contents of a job's xml file

*-Other XML-writing/reading

	+Parse XML file and toss data in blendjob struct

	+Update exec_blender() to use the struct rather than other vars

 -Add code to allow pausing/resuming of the slave (including a running blender process)

 -Add a threads variable for software that doesn't support threads (blender takes care of this by itself)

Options

 -Rewrite some stuff, try to make it simpler

x-Move server and client confuse code into their individual files, rather than in the common file. -- note: there wasn't any client code in options.c. There was the ``server'' section. That section is passed multiple times and provides information to remoteio on how to connect to servers

 -Review all confuse interfacing

 -Push patch for relative includes in confuse to the confuse developers

B-Expand execio() to support stderr

/*

  Copyright 2009 Nathan Phillip Brink, Ethan Zonca, Matthew Orlando

  This file is a part of DistRen.

  DistRen is free software: you can redistribute it and/or modify

  it under the terms of the GNU Affero General Public License as published by

  the Free Software Foundation, either version 3 of the License, or

  (at your option) any later version.

  DistRen is distributed in the hope that it will be useful,

  but WITHOUT ANY WARRANTY; without even the implied warranty of

  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

  GNU Affero General Public License for more details.

  You should have received a copy of the GNU Affero General Public License

  along with DistRen.  If not, see <http://www.gnu.org/licenses/>.

 */

// Provides DISTREN_REQUEST* which is in reality, DISTREN_SEND(signal) in the minds of your average joe

#include "protocol.h"

#include "options.h" // Confuse, etc.

#include "slavefuncs.h" // Slave functions

#include "asprintf.h"

#include <string.h>

#include <stdio.h>

#include <unistd.h>

#include <sys/stat.h> /*< mkdir() */

#include <stdlib.h>

int slavestatus = 0; // Ugh global vars

int main(int argc, char *argv[])

{

int counter;

/* Parses arguments, skips if there are no args */

for(counter=0; counter<argc; counter++){

	if(strcmp(argv[counter], "-h") == 0) {

		fprintf(stderr, "Usage: distrenslave [option] <username> <emailaddr>\nStarts a distren slave\n\t-h\tshow this help\n\t-c\tregisters a user with [username] and [emailaddr] \n");

		return 2;

	}

}

	if(argc>1

		&& (strcmp("-c", argv[1]) == 0))

	{

		char *username;

		char *email;

		if(argc != 4)

		{

			fprintf(stderr, "I need more arguments!\n%d is not enough!\n Invoke 'distrenslave -c <username> <emailaddr> to register. \n Already registered? Edit your distrenslave.conf file!\n'", argc - 1);

			return 234;

		}

		username = argv[2];

		email = argv[3];

		if(!strchr(email, '@'))

		{

			fprintf(stderr, "I want to see an '@' in your email address!\n%s may be good enough for you, but I need more!\n", email);

			return 235;

		}

		if( register_user(username, email) == 1){

			// register_user generates a key, too */

			fprintf(stderr,"Registration successfull. You may now invoke distrenslave with no arguments.\n");

			return 0;

		}

		else{

			fprintf(stderr,"Please try again! :D\n");

			return 0;

		}

	}

/* End arg parser */

/* Option getter: Creates vars to grab stuff from conf, uses the options include to grab this data */

char *username;

char *datadir;

cfg_t * my_cfg;

cfg_opt_t myopts[] = {

		CFG_SIMPLE_STR("username", &username),

		CFG_SIMPLE_STR("datadir", &datadir),

		CFG_END()

		};

struct options_common *commonopts;

username = NULL;

options_init(argc,argv,&my_cfg, myopts, "slave", &commonopts);

/* End option getter */

/* Notifies the user if there is no username in the conf file */

	if(username == NULL || strcmp(username, "!username") == 0 ){

	  fprintf(stderr, "\nYou didn't register!\nPlease register or edit your config. (see -h)\nIf this error persists, check distrenslave.conf to ensure all items are filled.\n");

	}

	else if( username != NULL || strcmp(username,"!username") != 0 ){

		// Logs ya in:

		if(login_user(username) == 1){

			fprintf(stderr,"You should now be logged into distren.\n");

		}

		else{

			fprintf(stderr,"Login failed. I have no clue why. Sorry.\n");

			return 0;

		}

	}

	else{

	  fprintf(stderr,"Something is terribly wrong!");

	}

int jobnum;

int framenum;

char *outputExt = "JPG";

char *outputRes = "1600x1200";

int gotframe; // set this to 1 after data for a job is received from the server

int busy = 0;     // Client business 1=busy 0=idle

char *urltoTar;  // Full URL to the server-side location of job#.tgz

char *pathtoTar; // Full path to the location of the job#.tgz

char *urltoOutput;   // Full URL where output is posted

char *pathtoJobfile; // Full path to the job's main file

char *pathtoOutput;  // Full path to the output (rendered) file

// If the slave is getting job info...

if(gotframe ==1)

  {

    char *tarcmd;

    char *outdir;

    char *jobdatapath;

    /**

       Variable Preparation

       @todo find where to free() all of these

    */

    _distren_asprintf(&jobdatapath, "job%d", jobnum);

    _distren_asprintf(&urltoTar, "http://protofusion.org/distren/stor/job%d/job%d.tar.gz",jobnum); // Prepares URL to download from

    _distren_asprintf(&pathtoTar, "%s/stor/jobdata/job%d.tar.gz", datadir, jobnum); // Prepares destination to save to

    _distren_asprintf(&pathtoJobfile, "%s/%s/job.blend", datadir, jobdatapath ); // Prepares the path to the jobfile

    _distren_asprintf(&urltoOutput, "http://protofusion.org/distren/stor/job%d/output/", jobdatapath ); // Prepares the URL where output is posted

    _distren_asprintf(&pathtoOutput, "%s/job%d/output/frame%d.%s", datadir, jobnum, framenum, outputExt ); // Prepares the path to the jobfile

    //  Download the data if it isn't  present. (prevents re-downloading for same-job frames) @TODO: Delete old job data

      struct stat buffer;

      int fstatus = stat(pathtoJobfile, &buffer);

      if(fstatus != -1){

              fprintf(stderr, "Using cached job file...\n");

              curlget(urltoTar, pathtoTar); // Downloads the Tar @TODO: add a progressbar

      }

    _distren_asprintf(&outdir, "/tmp/distren/job%d", jobnum); /*< @todo free() */

    mkdir(outdir, 0750);

    _distren_asprintf(&tarcmd, "tar -xvf \"%s\" -C \"%s\"", pathtoTar, outdir);

    system(tarcmd);

    free(tarcmd);

    // Consider placing the following in the exec_blender() function

    while(busy == 1){

      tell_the_server(DISTREN_REQUEST_PROGRESS);

        fprintf(stderr, "Rendering frame %d in job %d...",framenum,jobnum);

        sleep(5); // or not... this should be more event-driven, but should still give a heartbeat to the server

      }

    busy = 2;

    busy = 1; // When done rendering, set this.

     }

    // When blender is finished, run this...

      if(busy==2){

        fprintf(stderr, "Finished frame %d in job %d, uploading...",framenum,jobnum);

        char *outputurl;

        _distren_asprintf(&outputurl, "http://protofusion.org/distren/stor/job%d/",jobnum); // Throws the jobnum nicely in the string

        curlpost(pathtoOutput, urltoOutput); // posts the output at outputpath to the server at outputurl

        tell_the_server(DISTREN_REQUEST_DONEFRAME); // AKA "I'm done rendering that frame you sent me"

        busy=0;

        // Slave now becomes idle, doesn't need to tell the server anything, ssh handles this.

      }

  return 0;

}