lgsend(1) [debian man page]

LGSEND(1)							  BP executables							 LGSEND(1)

NAME

       lgsend - ION Load/Go command program

SYNOPSIS

       lgsend command_file_name own_endpoint_ID destination_endpoint_ID

DESCRIPTION

       ION Load/Go is a system for management of an ION-based network, enabling the execution of ION administrative programs at remote nodes.  The
       system comprises two programs, lgsend and lgagent.

       The lgsend program reads a Load/Go source file from a local file system, encapsulates the text of that source file in a bundle, and sends
       the bundle to an lgagent task that is waiting for data at a designated DTN endpoint on the remote node.

       To do so, it first reads all lines of the Load/Go source file identified by command_file_name into a temporary buffer in ION's SDR data
       store, concatenating the lines of the file and retaining all newline characters.  Then it invokes the bp_send() function to create and send
       a bundle whose payload is this temporary buffer, whose destination is destination_endpoint_ID, and whose source endpoint ID is
       own_endpoint_ID.  Then it terminates.

EXIT STATUS

       0   Load/Go file transmission succeeded.

       1   Load/Go file transmission failed.  Examine ion.log to determine the cause of the failure, then re-run.

FILES

       lgfile contains the Load/Go file capsules and directive that are to be sent to the remote node.

ENVIRONMENT

       No environment variables apply.

DIAGNOSTICS

       The following diagnostics may be issued to the ion.log log file:

       lgsend: can't attach to BP.
	   Bundle Protocol is not running on this computer.  Run bpadmin(1) to start BP.

       lgsend: can't open own endpoint.
	   own_endpoint_ID is not a declared endpoint on the local ION node.  Run bpadmin(1) to add it.

       lgsend: can't open file of LG commands: error description
	   command_file_name doesn't identify a file that can be opened.  Correct spelling of file name or file's access permissions.

       lgsend: can't get size of LG command file: error description
	   Operating system problem.  Investigate and correct before rerunning.

       lgsend: LG cmd file size > 64000.
	   Load/Go command file is too large.  Split it into multiple files if possible.

       lgsend: no space for application data unit.
	   ION system problem: have exhausted available SDR data store reserves.

       lgsend: fgets failed: error description
	   Operating system problem.  Investigate and correct before rerunning.

       lgsend: can't create application data unit.
	   ION system problem: have exhausted available SDR data store reserves.

       lgsend: can't send bundle.
	   ION system problem.	Investigate and correct before rerunning.

BUGS

       Report bugs to <ion-bugs@korgano.eecs.ohiou.edu>

SEE ALSO

       lgagent(1), lgfile(5)

perl v5.14.2							    2012-05-25								 LGSEND(1)

LGFILE(5)						      BP configuration files							 LGFILE(5)

NAME

       lgfile - ION Load/Go source file

DESCRIPTION

       The ION Load/Go system enables the execution of ION administrative programs at remote nodes:

	   The lgsend program reads a Load/Go source file from a local file system, encapsulates the text of that source file in a bundle, and
	   sends the bundle to a designated DTN endpoint on the remote node.

	   An lgagent task running on the remote node, which has opened that DTN endpoint for bundle reception, receives the extracted payload of
	   the bundle -- the text of the Load/Go source file -- and processes it.

       Load/Go source file content is limited to newline-terminated lines of ASCII characters.	More specifically, the text of any Load/Go source
       file is a sequence of line sets of two types: file capsules and directives.  Any Load/Go source file may contain any number of file
       capsules and any number of directives, freely intermingled in any order, but the typical structure of a Load/Go source file is simply a
       single file capsule followed by a single directive.

       Each file capsule is structured as a single start-of-capsule line, followed by zero or more capsule text lines, followed by a single end-
       of-capsule line.  Each start-of-capsule line is of this form:

	   [file_name

       Each capsule text line can be any line of ASCII text that does not begin with an opening ([) or closing (]) bracket character.

       A text line that begins with a closing bracket character (]) is interpreted as an end-of-capsule line.

       A directive is any line of text that is not one of the lines of a file capsule and that is of this form:

	   !directive_text

       When lgagent identifies a file capsule, it copies all of the capsule's text lines to a new file named file_name that it creates in the
       current working directory.  When lgagent identifies a directive, it executes the directive by passing directive_text to the pseudoshell()
       function (see platform(3)).  lgagent processes the line sets of a Load/Go source file in the order in which they appear in the file, so the
       directive_text of a directive may reference a file that was created as the result of processing a prior file capsule line set in the same
       source file.

       Note that lgfile directives are passed to pseudoshell(), which on a VxWorks platform will always spawn a new task; the first argument in
       directive_text must be a symbol that VxWorks can resolve to a function, not a shell command.  Also note that the arguments in
       directive_text will be actual task arguments, not shell command-line arguments, so they should never be enclosed in double-quote characters
       (").  However, any argument that contains embedded whitespace must be enclosed in single-quote characters (') so that pseudoshell() can
       parse it correctly.

EXAMPLES

       Presenting the following lines of source file text to lgsend:

	   [cmd33.bprc

	   x protocol ltp

	   ]

	   !bpadmin cmd33.bprc

       should cause the receiving node to halt the operation of the LTP convergence-layer protocol.

SEE ALSO

       lgsend(1), lgagent(1), platform(3)

perl v5.14.2							    2012-05-25								 LGFILE(5)