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//! The answers to a request this dashboard sent: what landed, what never
//! went out, and what a batch left unsent.
use super::*;
impl App {
/// `Msg::Replied`'s arm: routed by what was sent, to the handler that
/// asked for it.
pub(super) fn on_replied(
&mut self,
sent: Sent,
result: Result<Response, RequestError>,
) -> Effect {
match sent {
Sent::Lambs { id } => self.on_lambs(id, result),
Sent::Action { verb, target, name } => {
self.on_action_reply(verb, target, &name, result)
}
Sent::Dog {
name,
enable,
ticket,
..
} => self.on_dog_reply(name, enable, ticket, result),
Sent::GrantDog { name, ticket, .. } => self.on_dog_grant_reply(name, ticket, result),
Sent::SheepConfig { name } => self.on_sheep_config(&name, result),
Sent::DogSection { name } => self.on_dog_section(&name, result),
Sent::SetDogSection { name, ticket, .. } => {
self.on_dog_section_set(&name, ticket, result)
}
Sent::SetSheepDogTable {
name, dog, table, ..
} => self.on_table_set(&name, &dog, table.is_none(), result),
Sent::ApplyField {
name,
ticket,
key,
value,
..
} => {
let landed = result.is_ok();
let effect = self.on_field_applied(&name, &key, &value, result);
self.resolve_held_write(ticket, landed).unwrap_or(effect)
}
Sent::SetEnv {
name,
ticket,
key,
value,
..
} => {
let landed = result.is_ok();
let was_set = value.is_some();
let effect = self.on_env_set(&name, &key, was_set, result);
self.resolve_held_write(ticket, landed).unwrap_or(effect)
}
}
}
/// `Msg::Unsent`'s arm: a request the caller could not hand to the link
/// task, reported by what was sent.
pub(super) fn on_unsent(&mut self, sent: Sent) -> Effect {
match sent {
Sent::Action { verb, target, name } => {
self.action = None;
self.notice = Some(Notice::grave(
// No cause: `Full` is reachable while the shepherd is
// merely slow, so naming one would invent it.
format!("{}: it was not sent", target_prefix(verb, &target, &name)),
));
Effect::None
}
// A dropped lamb fetch already reads as "not read yet".
Sent::Lambs { .. } => Effect::None,
// A config read nobody took, reported rather than
// swallowed: silence here looks like a key that is not
// bound. A close waiting on it ends, having written nothing.
Sent::SheepConfig { name } => {
self.config_read_in_flight = false;
self.notice = Some(Notice::grave(format!(
"{name}: its config was not asked for{}",
self.end_close()
)));
Effect::None
}
// Both write arms name the field, and neither reaches for
// the pane: a close sends the whole set and leaves, so
// every one of these lands with no pane on screen. The
// notice is the whole report.
Sent::ApplyField { name, key, .. } => {
self.notice = Some(Notice::grave(format!("{name}: {key} was not sent")));
Effect::None
}
Sent::SetEnv { name, key, .. } => {
self.notice = Some(Notice::grave(format!("{name}: env {key} was not sent")));
Effect::None
}
// The dog twins of the two arms above: a read nobody took
// is reported, and so is a write nobody took.
Sent::DogSection { name } => {
self.config_read_in_flight = false;
// A settings row left mid-read would otherwise sit there
// holding nothing: the tree was put back to `Reading` for a
// re-read that never went out.
if self
.settings()
.is_some_and(|settings| settings.is_reading_a_dog(&name))
{
self.refuse_settings_dog(
&name,
format!("{name}: its config was not asked for"),
);
}
self.notice = Some(Notice::grave(format!(
"{name}: its config was not asked for{}",
self.end_close()
)));
Effect::None
}
Sent::SetDogSection { name, ticket, .. } => {
// The write never left, so nothing is in flight: the prompt has
// to say so rather than sit at "sent" waiting on a reply that
// can no longer arrive.
if let Some(settings) = self.settings_mut() {
settings.resolve(ticket);
}
self.notice = Some(Notice::grave(format!("{name}: its config was not sent")));
Effect::None
}
Sent::SetSheepDogTable { name, dog, .. } => self.on_table_unsent(&name, &dog),
// The arm above, against the settings screen's pending line.
Sent::Dog {
name,
enable,
ticket,
..
} => {
if let Some(settings) = self.settings_mut() {
settings.resolve(ticket);
}
let verb = if enable { "enable" } else { "disable" };
self.notice = Some(Notice::grave(format!("{verb} {name}: it was not sent")));
Effect::None
}
// The record is already in the file by the time this half goes
// out, so the sentence says the shepherd was not told rather than
// that nothing happened.
Sent::GrantDog { name, ticket, .. } => {
if let Some(settings) = self.settings_mut() {
settings.resolve(ticket);
}
self.notice = Some(Notice::grave(format!(
"{name}: its new grants were not sent, and the running dog keeps the old ones"
)));
Effect::None
}
}
}
/// `Msg::BatchSent`'s arm.
///
/// Delegates to `Msg::Unsent`'s own match rather than repeating
/// it: every arm there already reports the right notice for the
/// `Sent` it carries, and returns `Effect::None`.
pub(super) fn on_batch_sent(&mut self, unsent: Option<Sent>) -> Effect {
match unsent {
Some(sent) => self.update(Msg::Unsent { sent }),
None => Effect::None,
}
}
}