CXM_generic_client.anubis
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/*
* Created by PyramIDE.
* User: ricard
* Date: 02/02/2008
* Time: 11:47
*
*
*/
read tools/basis.anubis
read system/muscle.anubis
read system/data_io.anubis
read system/convert.anubis
read system/string.anubis
read system/message_queue.anubis
read system/message_transceiver.anubis
read tools/connections.anubis
read calexium_lib/CXM_message_constants.anubis
read calexium_lib/net_services/CXM_net_services.anubis
read calexium_lib/net_services/CXM_generic_protocol.anubis
// --Generic types---------------------------------------------------------------------
public type NetServiceAnswer:
netservice_error (Word32 cmd,
Word32 result_code,
String result_string),
netservice_ok (Word32 cmd,
Maybe(Message) result_msg).
// --Generic functions---------------------------------------------------------------------
/**
* Sends the message to the server then parses the answer and returns the RESULT message on CMD success.
*/
public define Maybe(NetServiceAnswer)
generic_send_message
(
MessageQueue queue,
Message msg_to_send,
Int timeout,
(String) -> One logger
)=
queue.add_Message_to_send(msg_to_send);
if queue.get_next_received_Message(timeout) is
{
timeout then logger("["+queue.get_name(unique)+"]: receive timeout");failure,
closed then logger("["+queue.get_name(unique)+"]: socket closed");failure,
msg(msg) then
if find_int32(msg, "CMD") is
{
failure then logger("["+queue.get_name(unique)+"]: CMD field not found"); failure,
success(cmd) then
if find_int32(msg, "STATUS") is
{
failure then logger("["+queue.get_name(unique)+"]: STATUS field not found"); failure,
success(v) then
if v = _CXM_OK then
success(netservice_ok(cmd, find_message(msg, "RESULT")))
else
with error_string = if find_string(msg, "STATUS_MSG") is success(s) then s else "",
success(netservice_error(cmd, v, error_string))
}
}
}.
public define Maybe($T)
simple_handler
(
MessageQueue queue,
String timestamp,
Int timeout,
Message msg_to_send,
(Message, MessageQueue, String) -> Maybe($T) handler,
(String) -> One logger
) =
if generic_send_message(queue, msg_to_send, timeout, logger) is
{
failure then failure,
success(net_result) then
if net_result is
{
netservice_error(cmd, err_code, err_str) then
logger("["+queue.get_name(unique)+"]: message status ERROR [0x" + to_hexa(err_code) + ", '" + err_str + "']");
failure,
netservice_ok(cmd, mb_msg) then
if mb_msg is
{
failure then logger("["+queue.get_name(unique)+"]: can't find RESULT message."); failure,
success(result) then handler(result, queue, timestamp)
}
}
}.
public define Maybe(One)
no_result_handler
(
MessageQueue queue,
Int timeout,
Message msg_to_send,
(String) -> One logger
) =
if generic_send_message(queue, msg_to_send, timeout, logger) is
{
failure then failure,
success(net_result) then
if net_result is
{
netservice_error(cmd, err_code, err_str) then
logger("["+queue.get_name(unique)+"]: message status ERROR [0x" + to_hexa(err_code) + ", '" + err_str + "']");
failure,
netservice_ok(cmd, mb_msg) then
if mb_msg is
{
failure then unique,
success(result) then logger("An unattended RESULT msg was found. Ignoring it...")
};
success(unique)
}
}.
public define (MessageQueue, String) -> Maybe($T)
make_generic_handler
(
Int timeout,
Message msg_to_send,
(Message, MessageQueue, String) -> Maybe($T) handler,
(String) -> One logger
) =
(MessageQueue queue, String timestamp) |->
simple_handler(queue, timestamp, timeout, msg_to_send, handler, logger).
define Maybe($T)
generic_request_for_service
(
MessageQueue queue,
Word32 service_id,
Word32 service_version,
String domain,
(MessageQueue, String) -> Maybe($T) handler,
(String) -> One logger
)=
with test_msg = message(_CXM_REQUEST_FOR_SERVICE),
forget(add_int32(test_msg, "SERVICE", service_id));
forget(add_int32(test_msg, "VERSION", service_version));
forget(add_string(test_msg, "DOMAIN", domain));
queue.add_Message_to_send(test_msg);
if queue.get_next_received_Message(10) is
{
timeout then logger("["+queue.get_name(unique)+"]: requesting service receive timeout");failure,
closed then logger("["+queue.get_name(unique)+"]: requesting service socket closed");failure,
msg(msg) then
if find_int32(msg, "STATUS") is
{
failure then logger("["+queue.get_name(unique)+"]: requesting service STATUS not found");failure,
success(v) then
if v = _CXM_OK then
if find_message(msg, "RESULT") is
{
failure then logger("["+queue.get_name(unique)+"]: requesting service RESULT not found");failure,
success(result) then
with timestamp = if find_string(result, "TIMESTAMP") is
{
failure then logger("["+queue.get_name(unique)+"]: requesting service TIMESTAMP not found"); "",
success(timestamp) then timestamp
},
handler(queue, timestamp)
}
else
logger("["+queue.get_name(unique)+"]: the requested service is not available on server.");failure
}
}.
public define Maybe($T)
generic_connect_to_net_service
(
String queue_name,
Word32 server,
Word32 port,
Word32 service_id,
Word32 service_version,
String domain,
(MessageQueue, String) -> Maybe($T) handler,
(String) -> One logger
)
=
if connect( server, port) is
{
error(_) then logger(queue_name + ": Can't connect to service ["+ip_addr_to_string(server)+":"+port+"]");failure,
ok(conn) then
// println("[" + virtual_machine_id + "] netservices create queue");
with queue = create_MessageQueue(queue_name),
message_transceiver(tcp(conn), queue);
// println("[" + virtual_machine_id + "] netservices generic_request_for_service()");
with result = generic_request_for_service(queue, service_id, service_version, domain, handler, logger),
// println("[" + virtual_machine_id + "] netservices client quit");
queue.quit(unique);
result
}.
//legacy version which not handle the domain
public define Maybe($T)
generic_connect_to_net_service
(
String queue_name,
Word32 server,
Word32 port,
Word32 service_id,
Word32 service_version,
(MessageQueue, String) -> Maybe($T) handler,
(String) -> One logger
)
=
generic_connect_to_net_service(queue_name, server, port, service_id, service_version, "", handler, logger).
define Word32
get_ip
(
String url_or_ip,
(String) -> One logger
) =
//logInfo(debug_log,"Try to resolve URL [" + url_or_ip+ "].");
if ip_address(url_or_ip) is success(ip) then
//logInfo(debug_log,"Try to resolve URL OK ip"+ip);
ip
else if dns(url_or_ip) is ok(ip_adr) then
//logInfo(debug_log,"Try to resolve URL OK dns"+ip_adr);
ip_adr
else
logger("Can't resolve URL [" + url_or_ip+ "]. Using localhost.");
ip_address((127,0,0,1)).
public define Maybe(Word32)
mb_get_ip
(
String url_or_ip
) =
//logInfo(debug_log,"Try to resolve URL [" + url_or_ip+ "].");
if ip_address(url_or_ip) is success(ip) then
//logInfo(debug_log,"Try to resolve URL OK ip"+ip);
success(ip)
else if dns(url_or_ip) is ok(ip_adr) then
//logInfo(debug_log,"Try to resolve URL OK dns"+ip_adr);
success(ip_adr)
else
println("Can't resolve URL [" + url_or_ip+ "].");
failure.
public define Word32
get_ip
(
String url_or_ip
) =
if ip_address(url_or_ip) is success(ip) then ip
else if dns(url_or_ip) is ok(ip_adr) then ip_adr
else
println("Can't resolve URL [" + url_or_ip+ "]. Using localhost.");
ip_address((127,0,0,1)).
/* Same version as above, but server is string containing IP or URL
* It's resolve by get_ip and call generic_connect_to_net_service with IP
*/
public define Maybe($T)
generic_connect_to_net_service
(
String queue_name,
String server,
Word32 port,
Word32 service_id,
Word32 service_version,
String domain,
(MessageQueue, String) -> Maybe($T) handler,
(String) -> One logger
)
= generic_connect_to_net_service(queue_name, get_ip(server, logger), port, service_id, service_version, domain, handler, logger).
public define Maybe($T)
generic_connect_to_net_service
(
String queue_name,
String server,
Word32 port,
Word32 service_id,
Word32 service_version,
(MessageQueue, String) -> Maybe($T) handler,
(String) -> One logger
)
= generic_connect_to_net_service(queue_name, server, port, service_id, service_version, "", handler, logger).
public define Maybe($T)
generic_connect_to_net_service_SSL
(
String queue_name,
String server_name,
Word32 server_ip,
Word32 port,
(Maybe(X509)) -> Bool accept_policy, // your policy for accepting the server certificate in
// case of an invalid, non trusted or missing certificate
Word32 service_id,
Word32 service_version,
String domain,
(MessageQueue, String) -> Maybe($T) handler,
(String) -> One logger
)
=
if open_SSL_connection( server_name, server_ip, port, accept_policy) is
{
error(_) then logger(queue_name + ": Can't connect to domain manager ["+ip_addr_to_string(server_ip)+":"+port+"]");failure,
ok(conn) then
with queue = create_MessageQueue(queue_name),
message_transceiver(ssl(conn), queue);
with result = generic_request_for_service(queue, service_id, service_version, domain, handler, logger),
queue.quit(unique);
//logInfo(debug_log,"domain_manager client quit");
result
}.
public define Maybe($T)
generic_connect_to_net_service_SSL
(
String queue_name,
String server_name,
Word32 server_ip,
Word32 port,
(Maybe(X509)) -> Bool accept_policy, // your policy for accepting the server certificate in
// case of an invalid, non trusted or missing certificate
Word32 service_id,
Word32 service_version,
(MessageQueue, String) -> Maybe($T) handler,
(String) -> One logger
)
= generic_connect_to_net_service_SSL(queue_name, server_name, server_ip, port, accept_policy, service_id, service_version, "", handler, logger).