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use libmqm_default as default;
use libmqm_sys as mq;
use super::option;
use crate::{
Object,
connection::AsConnection,
constants,
header::TextEnc,
prelude::*,
result::{Completion, Error, ResultComp, ResultCompErr},
string::{CCSID, StrCcsidCow},
structs,
traits::{Buffer, WriteRaw},
types,
};
#[cfg(feature = "mqai")]
mod mqai {
use libmqm_default as default;
use libmqm_sys as mq;
use super::option;
use crate::{
MqaiLibrary, Object, bag,
connection::AsConnection,
constants,
prelude::*,
result::{Completion, Error, ResultComp},
structs,
};
impl<C: AsConnection> Object<C>
where
C::Lib: crate::MqaiLibrary,
{
pub fn get_bag_with<R: option::GetBagAttr>(
&self,
options: &impl option::GetOption,
bag: &mut bag::Bag<bag::Owned, impl MqaiLibrary>,
) -> ResultComp<Option<R>> {
let mut param = option::GetParam {
md: structs::MQMD::new(default::MQMD_DEFAULT),
gmo: structs::MQGMO::new(default::MQGMO_DEFAULT),
};
let mut no_msg_available = false;
options.apply_param(&mut param);
assert!(param.gmo.Version <= mq::MQGMO_CURRENT_VERSION);
assert!(param.md.Version <= mq::MQMD_CURRENT_VERSION);
let result = R::get_bag_extract(&mut param, |param| {
let connection = self.connection.as_connection();
let conn = connection.as_connection();
let mqi_get_bag = conn
.mq
.mq_get_bag(conn.handle, self.handle(), &mut *param.md, &mut param.gmo, Some(&*bag));
no_msg_available = mqi_get_bag
.as_ref()
.is_err_and(|err| matches!(err, &Error(constants::MQCC_FAILED, _, constants::MQRC_NO_MSG_AVAILABLE)));
mqi_get_bag
});
if no_msg_available {
Ok(Completion::new(None))
} else {
result.map_completion(Some)
}
}
pub fn get_bag(
&self,
options: &impl option::GetOption,
bag: &mut bag::Bag<bag::Owned, impl MqaiLibrary>,
) -> ResultComp<bool> {
self.get_bag_with::<()>(options, bag).map_completion(|o| o.is_some())
}
}
}
impl<C: AsConnection> Object<C> {
/// Get a message from an object returning a slice of data.
///
/// This function uses the [MQGET](libmqm_sys::MQGET) verb. A retun code of [`MQRC_NO_MSG_AVAILABLE`](mq::MQRC_NO_MSG_AVAILABLE)
/// is translated to a return value of [`None`].
///
/// ## Panics
/// * An [`MQMD`](mq::MQMD) or [`MQGMO`](mq::MQGMO) Version exceeds the compiled MQ client
/// * The MQ client returns an invalid data length
pub fn get_data<'b, R>(&self, options: &impl option::GetOption, buffer: &'b mut [R]) -> ResultComp<Option<&'b [R]>>
where
R: WriteRaw<u8>,
{
self.get_as(options, buffer)
.map_completion(|o| o.map(|buffer: &mut [R]| &*buffer))
}
/// Get a message from an object returning a slice of data in a tuple with a [`GetAttr`](option::GetAttr).
///
/// This function uses the [MQGET](libmqm_sys::MQGET) verb. A retun code of [`MQRC_NO_MSG_AVAILABLE`](mq::MQRC_NO_MSG_AVAILABLE)
/// is translated to a return value of [`None`].
///
/// ## Panics
/// * An [`MQMD`](mq::MQMD) or [`MQGMO`](mq::MQGMO) Version exceeds the compiled MQ client
/// * The MQ client returns an invalid data length
pub fn get_data_with<'b, A, R>(
&self,
options: &impl option::GetOption,
buffer: &'b mut [R],
) -> ResultComp<Option<(&'b [R], A)>>
where
A: option::GetAttr<'b, R>,
R: WriteRaw<u8>,
{
self.get_as(options, buffer)
.map_completion(|o| o.map(|(buffer, attr): (&mut [R], A)| (&*buffer, attr)))
}
/// Get a string message from an object returning a [`StrCcsidCow`].
///
/// No conversion of the message is performed by default.
///
/// This function uses the [MQGET](libmqm_sys::MQGET) verb. A retun code of [`MQRC_NO_MSG_AVAILABLE`](mq::MQRC_NO_MSG_AVAILABLE)
/// is translated to a return value of [`None`].
///
/// ## Panics
/// * An [`MQMD`](mq::MQMD) or [`MQGMO`](mq::MQGMO) Version exceeds the compiled MQ client
/// * The MQ client returns an invalid data length
pub fn get_string<'b>(
&self,
options: &impl option::GetOption,
buffer: impl Buffer<'b, u8>,
) -> ResultCompErr<Option<StrCcsidCow<'b>>, super::GetStringCcsidError> {
self.get_as(options, buffer)
}
/// Get a string message from an object returning a ([`StrCcsidCow`], [impl `GetAttr`](option::GetAttr)) tuple.
///
/// No conversion of the message is performed by default.
///
/// This function uses the [MQGET](libmqm_sys::MQGET) verb. A retun code of [`MQRC_NO_MSG_AVAILABLE`](mq::MQRC_NO_MSG_AVAILABLE)
/// is translated to a return value of [`None`].
///
/// ## Panics
/// * An [`MQMD`](mq::MQMD) or [`MQGMO`](mq::MQGMO) Version exceeds the compiled MQ client
/// * The MQ client returns an invalid data length
pub fn get_string_with<'b, A>(
&self,
options: &impl option::GetOption,
buffer: impl Buffer<'b, u8>,
) -> ResultCompErr<Option<(StrCcsidCow<'b>, A)>, super::GetStringCcsidError>
where
A: option::GetAttr<'b, u8>,
{
self.get_as(options, buffer)
}
/// Get a message from an object returning a usually inferred [`GetValue`](option::GetValue).
///
/// This function uses the [MQGET](libmqm_sys::MQGET) verb. A retun code of [`MQRC_NO_MSG_AVAILABLE`](mq::MQRC_NO_MSG_AVAILABLE)
/// is translated to a return value of [`None`].
///
/// ## Panics
/// * An [`MQMD`](mq::MQMD) or [`MQGMO`](mq::MQGMO) Version exceeds the compiled MQ client
/// * The MQ client returns an invalid data length
pub fn get_as<'b, V, R, B>(&self, options: &impl option::GetOption, buffer: B) -> ResultCompErr<Option<V>, V::Error>
where
B: Buffer<'b, R>,
V: option::GetValue<'b, R, B>,
R: WriteRaw<u8>,
{
let mut param = option::GetParam {
md: structs::MQMD::new(default::MQMD_DEFAULT),
gmo: structs::MQGMO::new(default::MQGMO_DEFAULT),
};
let mut no_msg_available = false;
options.apply_param(&mut param);
param.gmo.set_min_version(mq::MQGMO_VERSION_3); // Required for ReturnLength
assert!(param.gmo.Version <= mq::MQGMO_CURRENT_VERSION);
assert!(param.md.Version <= mq::MQMD_CURRENT_VERSION);
let result = V::get_consume(&mut param, |param| {
let mut buffer = buffer;
let write_area = match V::get_max_data_size() {
Some(max_len) => &mut buffer.as_mut()[..max_len.into()],
None => buffer.as_mut(),
};
let connection = self.connection.as_connection();
let mqi_get = connection
.mq
.mqget(
connection.handle,
self.handle(),
Some(&mut *param.md),
&mut param.gmo,
write_area,
)
.map_completion(|length| {
(
length,
match types::MQRL(param.gmo.ReturnedLength) {
constants::MQRL_UNDEFINED => std::cmp::min(
write_area
.len()
.try_into()
.expect("length of buffer should be within bounds of MQLONG"),
length,
),
returned_length => returned_length.0,
},
)
})
.map_completion(|(message_length, data_length)| option::GetState {
buffer,
data_length: data_length.try_into().expect("data length should be within bounds of usize"),
message_length: message_length
.try_into()
.expect("message length should be within bounds of usize"),
format: types::MessageFormat {
ccsid: CCSID(param.md.CodedCharSetId),
encoding: types::MQENC(param.md.Encoding),
fmt: TextEnc::Ascii(param.md.Format),
},
});
no_msg_available = mqi_get
.as_ref()
.is_err_and(|e| matches!(e, &Error(constants::MQCC_FAILED, _, constants::MQRC_NO_MSG_AVAILABLE)));
mqi_get
});
if no_msg_available {
Ok(Completion::new(None))
} else {
result.map_completion(Some)
}
}
}