blasthavers/blastmud
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Allow disconnections and implement quit.

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This commit is contained in:
Condorra 2022-12-25 12:42:03 +11:00
parent 55d3087d21
commit 218ca0b953
8 changed files with 60 additions and 20 deletions
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6
blastmud_game/src/db.rs
View File

@ -29,7 +29,7 @@ pub struct DBTrans {
pub struct SendqueueItem {
pub item: i64,
pub session: ListenerSession,
pub message: String
pub message: Option<String>
}
impl From<Row> for SendqueueItem {
fn from(row: Row) -> Self {
@ -110,7 +110,7 @@ impl DBPool {
pub async fn queue_for_session(self: &Self,
session: &ListenerSession,
message: &str) -> DResult<()> {
message: Option<&str>) -> DResult<()> {
let conn = self.get_conn().await?;
conn.execute("INSERT INTO sendqueue (session, listener, message) VALUES ($1, $2, $3)",
&[&session.session, &session.listener, &message]).await?;
@ -157,7 +157,7 @@ impl DBPool {
impl DBTrans {
pub async fn queue_for_session(self: &Self,
session: &ListenerSession,
message: &str) -> DResult<()> {
message: Option<&str>) -> DResult<()> {
self.pg_trans()?
.execute("INSERT INTO sendqueue (session, listener, message) VALUES ($1, $2, $3)",
&[&session.session, &session.listener, &message]).await?;

16
blastmud_game/src/listener.rs
View File

@ -82,11 +82,17 @@ where
match handle_fut.await {
Ok(_) => {}
Err(e) => {
// On the assumption errors that get here are bad enough that they are a
// problem with the system rather than the message, so we want to log and
// retry later.
warn!("Error from message handler - closing listener connection: {}", e);
break 'listener_loop;
if connected_at.elapsed() > std::time::Duration::from_secs(60) {
// On the assumption errors that get here are bad enough that they are a
// problem with the system rather than the message, so we want to log and
// retry later.
warn!("Error from message handler - closing listener connection: {}", e);
break 'listener_loop;
} else {
warn!("Error from message handler, but we only just connected, so \
acknowledging it anyway as a safety measure against reconnect \
loops: {}", e);
}
}
}
match conn_framed.send(

4
blastmud_game/src/message_handler/new_session.rs
View File

@ -7,12 +7,12 @@ use crate::models::session::Session;
pub async fn handle(session: &ListenerSession, source: String, pool: &DBPool) -> DResult<()> {
pool.start_session(session, &Session { source, ..Default::default() }).await?;
pool.queue_for_session(&session, &ansi!("\
pool.queue_for_session(&session, Some(&ansi!("\
Welcome to <red>BlastMud<reset> - a text-based post-apocalyptic \
game <bold>restricted to adults (18+)<reset>\r\n\
Some commands to get you started:\r\n\
\t<bold>register <lt>username> <lt>password> <lt>email><reset> to register as a new user.\r\n\
\t<bold>connect <lt>username> <lt>password><reset> to log in as an existing user.\r\n\
\t<bold>help<reset> to learn more.\r\n")).await?;
\t<bold>help<reset> to learn more.\r\n"))).await?;
Ok(())
}

18
blastmud_game/src/message_handler/user_commands.rs
View File

@ -5,10 +5,12 @@ use ansi_macro::ansi;
use phf::phf_map;
use async_trait::async_trait;
use crate::models::session::Session;
use log::warn;
mod parsing;
mod ignore;
mod help;
mod quit;
pub struct VerbContext<'l> {
session: &'l ListenerSession,
@ -44,14 +46,20 @@ type UserVerbRegistry = phf::Map<&'static str, UserVerbRef>;
static ALWAYS_AVAILABLE_COMMANDS: UserVerbRegistry = phf_map! {
"" => ignore::VERB,
"help" => help::VERB
"help" => help::VERB,
"quit" => quit::VERB,
};
pub async fn handle(session: &ListenerSession, msg: &str, pool: &DBPool) -> DResult<()> {
let (cmd, params) = parsing::parse_command_name(msg);
let trans = pool.start_transaction().await?;
let mut session_dat = match trans.get_session_model(session).await? {
None => { return Ok(()) }
None => {
// If the session has been cleaned up from the database, there is
// nowhere to go from here, so just ignore it.
warn!("Got command from session not in database: {}", session.session);
return Ok(());
}
Some(v) => v
};
let handler_opt = ALWAYS_AVAILABLE_COMMANDS.get(cmd);
@ -60,16 +68,16 @@ pub async fn handle(session: &ListenerSession, msg: &str, pool: &DBPool) -> DRes
match handler_opt {
None => {
trans.queue_for_session(session,
ansi!(
Some(ansi!(
"That's not a command I know. Try <bold>help<reset>\r\n"
)
))
).await?;
}
Some(handler) => {
match handler.handle(&ctx, cmd, params).await {
Ok(()) => {}
Err(UserError(err_msg)) => {
trans.queue_for_session(session, &(err_msg + "\r\n")).await?;
trans.queue_for_session(session, Some(&(err_msg + "\r\n"))).await?;
}
Err(SystemError(e)) => Err(e)?
}

4
blastmud_game/src/message_handler/user_commands/help.rs
View File

@ -36,7 +36,9 @@ impl UserVerb for Verb {
help = help.or_else(|| HELP_PAGES.get(remaining));
let help_final = help.ok_or(
UserError("No help available on that".to_string()))?;
ctx.trans.queue_for_session(ctx.session, &(help_final.to_string() + "\r\n")).await?;
ctx.trans.queue_for_session(ctx.session,
Some(&(help_final.to_string() + "\r\n"))
).await?;
Ok(())
}
}

18
blastmud_game/src/message_handler/user_commands/quit.rs Normal file
View File

@ -0,0 +1,18 @@
use super::{
VerbContext, UserVerb, UserVerbRef, UResult
};
use async_trait::async_trait;
use ansi_macro::ansi;
pub struct Verb;
#[async_trait]
impl UserVerb for Verb {
async fn handle(self: &Self, ctx: &VerbContext, _verb: &str, _remaining: &str) -> UResult<()> {
ctx.trans.queue_for_session(ctx.session,
Some(ansi!("<red>Bye!<reset>\r\n"))).await?;
ctx.trans.queue_for_session(ctx.session, None).await?;
Ok(())
}
}
static VERB_INT: Verb = Verb;
pub static VERB: UserVerbRef = &VERB_INT as UserVerbRef;

11
blastmud_game/src/regular_tasks.rs
View File

@ -34,9 +34,14 @@ async fn process_sendqueue_once(pool: db::DBPool, listener_map: ListenerMap) ->
let (tx, rx) = oneshot::channel();
listener_sender.send(
ListenerSend {
message: MessageToListener::SendToSession {
session: item.session.session.clone(),
msg: item.message.clone()
message: match item.message.clone() {
None => MessageToListener::DisconnectSession {
session: item.session.session.clone()
},
Some(msg) => MessageToListener::SendToSession {
session: item.session.session.clone(),
msg: msg
}
},
ack_notify: tx
}

3
schema/schema.sql
View File

@ -40,12 +40,13 @@ CREATE UNLOGGED TABLE sendqueue (
item BIGSERIAL NOT NULL PRIMARY KEY,
session UUID NOT NULL REFERENCES sessions(session),
listener UUID REFERENCES listeners(listener),
message TEXT NOT NULL
message TEXT /* Nullable, null means disconnect */
);
CREATE TABLE tasks (
task_code TEXT NOT NULL,
task_type TEXT NOT NULL,
is_static BOOL NOT NULL,
next_scheduled TIMESTAMP WITH TIME ZONE NOT NULL,
details JSONB NOT NULL,
PRIMARY KEY (task_code, task_type)