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#[macro_use]
extern crate error_chain;
extern crate mysql;
extern crate rand;
extern crate sha1;
mod errors {
use mysql;
error_chain! {
foreign_links {
MySql(mysql::error::Error);
}
}
}
use errors::*;
struct Purchaser<'a> {
name: &'a str,
email: &'a str,
secret: Option<String>,
}
impl<'a> Purchaser<'a> {
fn new(name: &'a str, email: &'a str) -> Self {
Purchaser {
name: name,
email: email,
secret: None,
}
}
fn with_secret(mut self, secret: String) -> Self {
self.secret = Some(secret);
self
}
fn generate_secret(&mut self) {
let random: usize = rand::random();
let source = format!("{}{}{}", self.name, self.email, random);
let digest = sha1::Sha1::from(source).hexdigest();
self.secret = Some(digest);
}
fn insert(&self, cx: &mut mysql::Conn) -> Result<()> {
let mut tx = cx.start_transaction(
false, // consistent_snapshot
None, // isolation_level
None, // readonly
)?;
match self.secret {
Some(ref s) => {
tx.prep_exec("
INSERT INTO purchasers
(name, email, secret)
VALUES
(?, ?, ?)",
(self.name, self.email, s),
)?;
},
None => {
tx.prep_exec("
INSERT INTO purchasers
(name, email)
VALUES
(?, ?)",
(self.name, self.email),
)?;
},
}
Ok(())
}
}
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