CXM_generic_protocol.anubis
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/*
*
* User: David RENE
* Date: 25/04/2007
* Time: 16:20
* (c) Calexium
*
*/
read system/muscle.anubis
read system/data_io.anubis
read system/string.anubis
read system/files.anubis
read tools/basis.anubis
read system/message_queue.anubis
read calexium_lib/CXM_message_constants.anubis
read calexium_lib/types/generated/file_ref.anubis
public define Word32 _CXM_OK = 0.
public define Word32 _CXM_ERROR = 1.
public define Word32 _CXM_UNKNOW_CMD = 2.
public define Word32 _CXM_UNKNOW_SERVICE = 3.
public define Word32 _CXM_MISSING_REQUIRED_FIELD = 4.
public define Word32 _CXM_FORBIDDEN = 5.
public define Word32 _CXM_BAD_AUTHENTICATION = 6.
public define Word32 _CXM_TEMPORARY_ERROR = 7. // When received, the client should try later
public type ProtocolResult:
failure,
timeout,
unknow_cmd,
error,
error(Word32, String),
ok,
ok_msg(Message).
public define One
send_ACK_error
(
MessageQueue queue,
Word32 cmd_id,
Word32 error_code,
String error_string,
)=
with err_msg = message(_CXM_ACK),
forget(add_int32(err_msg, "CMD", cmd_id));
forget(add_int32(err_msg, "STATUS", error_code));
(if error_string /= "" then forget(add_string(err_msg, "STATUS_MSG", error_string))
else unique);
forget(queue.add_Message_to_send(err_msg)).
public define One
send_ACK_error
(
MessageQueue queue,
Word32 cmd_id
)=
send_ACK_error(queue, cmd_id, _CXM_ERROR, "").
public define One
send_ACK_ok
(
MessageQueue queue,
Word32 cmd_id
)=
with ok_msg = message(_CXM_ACK),
forget(add_int32(ok_msg, "CMD", cmd_id));
forget(add_int32(ok_msg, "STATUS", _CXM_OK));
forget(queue.add_Message_to_send(ok_msg))
.
public define One
send_ACK_ok
(
MessageQueue queue,
Word32 cmd_id,
Message result
)=
with ok_msg = message(_CXM_ACK),
forget(add_int32(ok_msg, "CMD", cmd_id));
forget(add_int32(ok_msg, "STATUS", _CXM_OK));
forget(add_message(ok_msg, "RESULT", result));
forget(queue.add_Message_to_send(ok_msg))
.
public define One
send_result
(
MessageQueue queue,
Word32 cmd_id,
Maybe(Message) mb_msg
)=
if mb_msg is
{
failure then send_ACK_error(queue, cmd_id),
success(msg) then send_ACK_ok(queue, cmd_id, msg)
}.
public define One
send_result
(
MessageQueue queue,
Word32 cmd_id,
Result((Word32, String), Message) mb_msg
)=
if mb_msg is
{
error(err) then
if err is (err_code, err_string) then
send_ACK_error(queue, cmd_id, err_code, err_string),
ok(msg) then send_ACK_ok(queue, cmd_id, msg)
}.
public define One
send_result
(
MessageQueue queue,
Word32 cmd_id,
Bool result
)=
if result then
send_ACK_ok(queue, cmd_id)
else
send_ACK_error(queue, cmd_id).
public define ProtocolResult
wait_for_reply
(
MessageQueue mQ,
Word32 wait_cmd,
Int t_out
) =
if mQ.get_next_received_Message(t_out) is
{
timeout then timeout,
closed then failure, //println("wait_for_reply closed");
msg(_msg) then
if *_msg.what = _CXM_ACK then
if find_int32(_msg, "CMD") is
{
failure then failure, //println("wait_for_reply CMD");
success(cmd) then
// println("wait_for_reply CMD="+to_hexa(cmd));
if find_int32(_msg, "STATUS") is
{
failure then failure, //println("wait_for_reply STATUS");
success(status) then
if cmd = wait_cmd then
(
if status = _CXM_OK then
if find_message(_msg, "RESULT") is
{
failure then ok,
success(ok_message) then ok_msg(ok_message)
}
else if status = _CXM_ERROR then
error
else if status = _CXM_UNKNOW_CMD then
unknow_cmd
else
error(status, if find_string(_msg, "STATUS_MSG") is success(txt) then txt else "")
)
else
failure //println("wait_for_reply ");
}
}
else
failure //println("wait_for_reply not ACK");
}.
public define Bool
simple_wait_for_reply
(
MessageQueue mQ,
Word32 wait_cmd,
Int t_out
) =
if wait_for_reply(mQ, wait_cmd, t_out) is
{
failure then false,
timeout then false,
unknow_cmd then false,
error then false,
error(_, _) then false,
ok then true,
ok_msg(msg) then true
}.
public define Bool
get_file_ref
(
MessageQueue mQ,
File_ref f_ref,
String tmp_path
)=
//create the target
with target_file = tmp_path + "/" + f_ref.name,
//println("NET_SERVICE get_file_ref for "+target_file);
with msg = message(_CXM_GET_FILE_REF),
forget(add_message(msg, "GET_FILE_REF", to_Message(f_ref)));
forget(mQ.add_Message_to_send(msg));
if wait_for_reply(mQ, _CXM_GET_FILE_REF, 30) is
{
failure then false,
timeout then false,
unknow_cmd then false,
error then false,
error(_, _) then false,
ok then false, //false because OK without result message is not allowed
ok_msg(rmsg) then
//println("get_file_ref wait_for_reply _CXM_GET_FILE_REF OK");
with size = if find_string(rmsg, "SIZE") is {failure then f_ref.size, success(size_str) then if decimal_scan(size_str) is { failure then should_not_happen(0), success(_size_) then _size_}},
with mode = find_string(rmsg, "MODE", "NEW"),
if mode = "APPEND" then
if (Maybe(RWStream))file(target_file, append) is
{
failure then println("can't create target file"+target_file);false, //nothing to write
success(target) then
with buffer = mQ.raw_mode_on(size),
//println("raw_more on buffer len "+length(buffer)+" buffer ["+to_string(buffer)+"]");
forget(flush(buffer, weaken(target)));
if copy_file_to_Connection(mQ.get_connection(unique), file(target), size - length(buffer)) is
{
failure then mQ.raw_mode_off(unique);false,
success(_) then mQ.raw_mode_off(unique);true
}
}
else //by default the mode is new
if (Maybe(RWStream))file(target_file, append) is
{
failure then println("can't create target file"+target_file);false, //nothing to write
success(target) then
with buffer = mQ.raw_mode_on(size),
//println("raw_more on buffer len "+length(buffer)+" buffer ["+to_string(buffer)+"]");
forget(flush(buffer, weaken(target)));
if copy_file_to_Connection(mQ.get_connection(unique), file(target), size) is
{
failure then mQ.raw_mode_off(unique);false,
success(_) then mQ.raw_mode_off(unique);true
}
}
}
.
public define Bool
send_file_ref
(
MessageQueue mQ,
Message msg,
)=
//println("NET_SERVICE send_file_ref received *");
if *msg.what = _CXM_GET_FILE_REF then
if find_message(msg, "GET_FILE_REF") is {
failure then println("NET_SERVICE send_file_ref: can't find GET_FILE_REF message"); false,
success(file_ref_obj_msg) then
if (Maybe(File_ref))from_Message(file_ref_obj_msg) is
{
failure then println("NET_SERVICE send_file_ref: can't extract GET_FILE_REF message");false,
success(f_ref) then
//println("NET_SERVICE send_file_ref: GET_FILE_REF message File_ref extracted\n"+dump(file_ref_obj_msg));
//create the target
with source_file = f_ref.path + "/" + f_ref.name,
with msg = message(0),
with size = file_size(source_file),
println("source_file = "+source_file);
println("size = "+size);
forget(add_string(msg, "MODE", "NEW"));
forget(add_string(msg, "SIZE", to_String(size)));
//println("NET_SERVICE send_file_ref: reply message \n"+dump(msg));
if (Maybe(RStream))file(source_file, read) is
{
failure then println("NET_SERVICE send_file_ref: can't open source file"+source_file);false, //nothing to write
success(source) then
//println("NET_SERVICE send_file_ref send ack file size "+size);
send_ACK_ok(mQ, _CXM_GET_FILE_REF, msg);
//println("call flush_wait");
mQ.flush_wait(unique);
if copy_file_to_Connection(file(source), mQ.get_connection(unique), size) is
{
failure then println("NET_SERVICE send_file_ref copy_file_to_Connection error");false,
success(_) then println("NET_SERVICE send_file_ref copy_file_to_Connection ok");true
}
}
}
}
else //not _CXM_GET_FILE_REF
println("[send_file_ref] it's not a _CXM_GET_FILE_REF");
false
.