[one-users] onevm - program flow - need more information

[marimuthu.balasubramanian at wipro.com]

I would like to know onevm command execution flow(for ex: onevm submit) for the better understanding. I know little bit. please find my understanding for onevm "submit". Please give me information apart from my understanding.

For onevm submit <vm template> 
The execution start from 
1. case command
when "submit", "create"
    check_parameters("create", 1)
    result=vm.allocate(*ARGV)
    if result[0]
        puts "ID: " + result[1].to_s if ops[:verbose]
        command_exit 0
    end

2. then it invokes allocate method of one.rb script
allocate method is ........
       def allocate(*args)
            begin
                f=open(args[0], "r")
                template=f.read
                f.close
            rescue
                return [false, "Can not read template"]
            end

            self.allocate_(template)
        end

My doubt is after self.allocate how "submit" got scheduled.
I believe the openNEbula has scheduler to handle all the commands

When schduler invokes the submit command. it invokes the tm_clone.sh and tm_mkswap.sh. 

I have very little knowladge on your C++ source code.

I believe RequestManager::register_xml_methods()(RequestManager.cc) registers the all the commands with xmlrpc.

Further RequestManager::VirtualMachineAllocate::execute() (RequestManagerAllocate.cc) method got invoked

I don't have any idea when TranferManager.cc got used. 

 
Regards
Marimuthu
Wipro Technologies
Bangalore

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