Basic minimal prototype

Use a postgres database as storage and start with sone basic
functionality.
This commit is contained in:
finga 2023-01-23 23:36:03 +01:00
commit 665015c296
14 changed files with 1082 additions and 0 deletions

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[target.'cfg(feature = "cargo-clippy")']
rustflags = [
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/target

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19
Cargo.toml Normal file
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@ -0,0 +1,19 @@
[package]
name = "whakarite"
version = "0.1.0"
edition = "2021"
description = "Organize..."
license = "GPL-3.0-or-later"
repository = "https://git.onders.org/finga/whakarite"
readme = "../README.md"
keywords = ["remind"]
categories = ["utility"]
[dependencies]
anyhow = "1"
log = "0.4"
tracing = "0.1"
tracing-subscriber = "0.3"
time = "0.3"
lettre = { version = "0.10", features = ["tracing"] }
diesel = { version = "2", features = ["postgres", "r2d2", "time"] }

8
README.md Normal file
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@ -0,0 +1,8 @@
# Whakarite
to arrange, adjust, organise, put in order, appoint, assign.
to balance by equivalent, in like manner.
to make like.
to compare, correspond to, liken to.
to fulfil, perform.
to say prayers, recite rituals.

8
diesel.toml Normal file
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# For documentation on how to configure this file,
# see https://diesel.rs/guides/configuring-diesel-cli
[print_schema]
file = "src/schema.rs"
[migrations_directory]
dir = "migrations"

0
migrations/.keep Normal file
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@ -0,0 +1,6 @@
-- This file was automatically created by Diesel to setup helper functions
-- and other internal bookkeeping. This file is safe to edit, any future
-- changes will be added to existing projects as new migrations.
DROP FUNCTION IF EXISTS diesel_manage_updated_at(_tbl regclass);
DROP FUNCTION IF EXISTS diesel_set_updated_at();

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@ -0,0 +1,36 @@
-- This file was automatically created by Diesel to setup helper functions
-- and other internal bookkeeping. This file is safe to edit, any future
-- changes will be added to existing projects as new migrations.
-- Sets up a trigger for the given table to automatically set a column called
-- `updated_at` whenever the row is modified (unless `updated_at` was included
-- in the modified columns)
--
-- # Example
--
-- ```sql
-- CREATE TABLE users (id SERIAL PRIMARY KEY, updated_at TIMESTAMP NOT NULL DEFAULT NOW());
--
-- SELECT diesel_manage_updated_at('users');
-- ```
CREATE OR REPLACE FUNCTION diesel_manage_updated_at(_tbl regclass) RETURNS VOID AS $$
BEGIN
EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
FOR EACH ROW EXECUTE PROCEDURE diesel_set_updated_at()', _tbl);
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION diesel_set_updated_at() RETURNS trigger AS $$
BEGIN
IF (
NEW IS DISTINCT FROM OLD AND
NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
) THEN
NEW.updated_at := current_timestamp;
END IF;
RETURN NEW;
END;
$$ LANGUAGE plpgsql;

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@ -0,0 +1 @@
DROP TABLE reminders;

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@ -0,0 +1,9 @@
CREATE TABLE reminders (
id SERIAL NOT NULL PRIMARY KEY,
created TIMESTAMPTZ NOT NULL DEFAULT now(),
planned TIMESTAMPTZ NOT NULL,
executed TIMESTAMPTZ,
title TEXT NOT NULL,
message TEXT NOT NULL,
receiver TEXT NOT NULL
);

88
src/main.rs Normal file
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use anyhow::Result;
use diesel::{
prelude::*,
r2d2::{ConnectionManager, Pool, PooledConnection},
};
use lettre::{Message, SmtpTransport, Transport};
use std::{env, thread::park_timeout};
use time::{Duration, OffsetDateTime};
use tracing::{debug, info, trace};
mod models;
mod schema;
use models::{NewReminder, Reminder};
fn remind(
db: &mut PooledConnection<ConnectionManager<PgConnection>>,
mailer: &SmtpTransport,
) -> Result<()> {
debug!("executing remind run");
for reminder in schema::reminders::dsl::reminders
.filter(schema::reminders::executed.is_null())
.order(schema::reminders::planned.asc())
.load::<Reminder>(db)?
{
trace!(?reminder, "checking reminder");
if reminder.planned <= OffsetDateTime::now_utc() {
let email = Message::builder()
.from("whakarite@localhost".parse()?)
.to(reminder.receiver.parse()?)
.subject(&reminder.title)
.body(reminder.message.to_string())?;
mailer.send(&email)?;
diesel::update(&reminder)
.set(schema::reminders::executed.eq(Some(OffsetDateTime::now_utc())))
.execute(db)?;
debug!("email sent to {}", reminder.receiver);
} else {
info!(
"parking reminder for {:?}",
reminder.planned - OffsetDateTime::now_utc(),
);
park_timeout(<std::time::Duration>::try_from(
reminder.planned - OffsetDateTime::now_utc(),
)?);
}
// Check for another remnd job if none dont loop forever
}
Ok(())
}
fn main() -> Result<()> {
tracing_subscriber::fmt::init();
info!(
"{} {} started",
env!("CARGO_BIN_NAME"),
env!("CARGO_PKG_VERSION")
);
let db_pool = Pool::builder().build(ConnectionManager::<PgConnection>::new(
"postgresql://whakarite:whakarite@localhost/whakarite",
))?;
let test_reminder = NewReminder {
created: OffsetDateTime::now_utc(),
planned: (OffsetDateTime::now_utc() + Duration::MINUTE),
title: "Test title",
message: "Test message",
receiver: "finga@localhost",
};
diesel::insert_into(schema::reminders::table)
.values(&test_reminder)
.execute(&mut db_pool.get()?)?;
let mailer = SmtpTransport::unencrypted_localhost();
loop {
remind(&mut db_pool.get()?, &mailer)?;
}
}

24
src/models.rs Normal file
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use crate::schema::reminders;
use diesel::prelude::*;
use time::OffsetDateTime;
#[derive(AsChangeset, Debug, Identifiable, Queryable)]
pub struct Reminder {
id: i32,
created: OffsetDateTime,
pub planned: OffsetDateTime,
executed: Option<OffsetDateTime>,
pub title: String,
pub message: String,
pub receiver: String,
}
#[derive(Insertable)]
#[diesel(table_name = reminders)]
pub struct NewReminder<'a> {
pub created: OffsetDateTime,
pub planned: OffsetDateTime,
pub title: &'a str,
pub message: &'a str,
pub receiver: &'a str,
}

13
src/schema.rs Normal file
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@ -0,0 +1,13 @@
// @generated automatically by Diesel CLI.
diesel::table! {
reminders (id) {
id -> Int4,
created -> Timestamptz,
planned -> Timestamptz,
executed -> Nullable<Timestamptz>,
title -> Text,
message -> Text,
receiver -> Text,
}
}