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EN605.607.81.SP22_ASDM_Project
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backend: Move fn init_conn into handler struct

This commit is contained in:
Stephen Seo 2022-03-29 15:05:23 +09:00
parent 40b2333767
commit 545b5a3a1b
1 changed files with 43 additions and 43 deletions
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86
back_end/src/db_handler.rs
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@ -37,7 +37,7 @@ impl DBHandler {
DBHandlerRequest::GetID(player_tx) => {
// got request to create new player, create new player
let mut player_id: u32 = thread_rng().gen();
let conn_result = init_conn(&self.sqlite_path, DBFirstRun::NotFirstRun);
let conn_result = self.get_conn(DBFirstRun::NotFirstRun);
if let Err(e) = conn_result {
println!("Failed to get sqlite db connection: {:?}", e);
self.shutdown_tx.send(()).ok();
@ -80,52 +80,52 @@ impl DBHandler {
false
}
}
fn init_conn(sqlite_path: &str, first_run: DBFirstRun) -> Result<Connection, String> {
if let Ok(conn) = Connection::open(sqlite_path) {
conn.execute("PRAGMA foreign_keys = ON;", [])
.map_err(|e| format!("Should be able to handle \"foreign_keys\": {:?}", e))?;
let result = conn.execute(
"
CREATE TABLE players (id INTEGER PRIMARY KEY NOT NULL,
date_added TEXT NOT NULL,
game_id INTEGER,
FOREIGN KEY(game_id) REFERENCES games(id) ON DELETE CASCADE);
",
[],
);
if result.is_ok() {
if first_run == DBFirstRun::FirstRun {
println!("Created \"players\" table");
fn get_conn(&self, first_run: DBFirstRun) -> Result<Connection, String> {
if let Ok(conn) = Connection::open(&self.sqlite_path) {
conn.execute("PRAGMA foreign_keys = ON;", [])
.map_err(|e| format!("Should be able to handle \"foreign_keys\": {:?}", e))?;
let result = conn.execute(
"
CREATE TABLE players (id INTEGER PRIMARY KEY NOT NULL,
date_added TEXT NOT NULL,
game_id INTEGER,
FOREIGN KEY(game_id) REFERENCES games(id) ON DELETE CASCADE);
",
[],
);
if result.is_ok() {
if first_run == DBFirstRun::FirstRun {
println!("Created \"players\" table");
}
} else if first_run == DBFirstRun::FirstRun {
println!("\"players\" table exists");
}
} else if first_run == DBFirstRun::FirstRun {
println!("\"players\" table exists");
}
let result = conn.execute(
"
CREATE TABLE games (id INTEGER PRIMARY KEY NOT NULL,
cyan_player INTEGER UNIQUE,
magenta_player INTEGER UNIQUE,
date_added TEXT NOT NULL,
board TEXT NOT NULL,
status INTEGER NOT NULL,
FOREIGN KEY(cyan_player) REFERENCES players (id),
FOREIGN KEY(magenta_player) REFERENCES players (id));
",
[],
);
if result.is_ok() {
if first_run == DBFirstRun::FirstRun {
println!("Created \"games\" table");
let result = conn.execute(
"
CREATE TABLE games (id INTEGER PRIMARY KEY NOT NULL,
cyan_player INTEGER UNIQUE,
magenta_player INTEGER UNIQUE,
date_added TEXT NOT NULL,
board TEXT NOT NULL,
status INTEGER NOT NULL,
FOREIGN KEY(cyan_player) REFERENCES players (id),
FOREIGN KEY(magenta_player) REFERENCES players (id));
",
[],
);
if result.is_ok() {
if first_run == DBFirstRun::FirstRun {
println!("Created \"games\" table");
}
} else if first_run == DBFirstRun::FirstRun {
println!("\"games\" table exists");
}
} else if first_run == DBFirstRun::FirstRun {
println!("\"games\" table exists");
Ok(conn)
} else {
Err(String::from("Failed to open connection"))
}
Ok(conn)
} else {
Err(String::from("Failed to open connection"))
}
}
@ -141,7 +141,7 @@ pub fn start_db_handler_thread(
};
thread::spawn(move || {
// temporarily get conn which should initialize on first setup of db
if let Ok(_conn) = init_conn(&handler.sqlite_path, DBFirstRun::FirstRun) {
if let Ok(_conn) = handler.get_conn(DBFirstRun::FirstRun) {
} else {
println!("ERROR: Failed init sqlite db connection");
handler.shutdown_tx.send(()).ok();