Browse Source

Map server

master
Pascal Engélibert 6 months ago
parent
commit
2082f7e211
Signed by: tuxmain
GPG Key ID: 3504BC6D362F7DCA
  1. 1
      .gitignore
  2. 2
      README.md
  3. 2146
      mapserver/Cargo.lock
  4. 16
      mapserver/Cargo.toml
  5. 8
      mapserver/rustfmt.toml
  6. 43
      mapserver/src/config.rs
  7. 203
      mapserver/src/main.rs

1
.gitignore vendored

@ -0,0 +1 @@
mapserver/target

2
README.md

@ -33,7 +33,7 @@ If you make substancial modifications or fixes to the backend (Python) code, ple
## License
CopyLeft 2020-2021 Pascal Engélibert
CopyLeft 2020-2022 Pascal Engélibert
This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, version 3 of the License.

2146
mapserver/Cargo.lock generated

File diff suppressed because it is too large Load Diff

16
mapserver/Cargo.toml

@ -0,0 +1,16 @@
[package]
name = "mapserver"
version = "0.1.0"
edition = "2021"
[dependencies]
async-std = { version = "1.6.5", features = ["attributes"] }
crossbeam-channel = "0.5.2"
ctrlc = "3.2.1"
http-types = "2.12.0"
image = "0.24.1"
log = "0.4.14"
parking_lot = "0.12.0"
serde = "1.0.117"
simplelog = "0.11.1"
tide = "0.16.0"

8
mapserver/rustfmt.toml

@ -0,0 +1,8 @@
hard_tabs = true
newline_style = "unix"
unstable_features = true
format_code_in_doc_comments = true
format_macro_bodies = true
format_macro_matchers = true
format_strings = true

43
mapserver/src/config.rs

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pub struct Config {
/// Must start and end with `/`
pub base_url: String,
pub cache_age: u64,
pub listen: String,
pub mapper_threads: usize,
pub minetestmapper_args: Vec<String>,
pub minetestmapper_path: String,
pub output_path: String,
pub tile_size: usize,
pub world_path: String,
pub zoom_default: i32,
pub zoom_max: i32,
pub zoom_min: i32,
}
impl Default for Config {
fn default() -> Self {
Self {
base_url: String::from("/"),
cache_age: 86400,
listen: String::from("127.0.0.1:8080"),
mapper_threads: 4,
minetestmapper_args: vec![
String::from("--drawalpha"),
String::from("--noemptyimage"),
String::from("--max-y"),
String::from("2000"),
String::from("--colors"),
String::from("/home/tuxmain/Colors.txt/colors.txt"),
],
minetestmapper_path: String::from("/home/tuxmain/minetestmapper/minetestmapper"),
output_path: String::from("/var/www/html/minetest-map/survival/"),
tile_size: 256,
world_path: String::from(
"/var/games/minetest-server/.minetest/worlds/juneland-survival/",
),
zoom_default: 7,
zoom_max: 10,
zoom_min: 4,
}
}
}

203
mapserver/src/main.rs

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#![feature(try_blocks)]
mod config;
use crossbeam_channel::{Receiver, Sender};
use log::{debug, error, info, warn};
use parking_lot::RwLock;
use std::{collections::HashMap, io::Read, sync::Arc, time::SystemTime};
use tide::Request;
#[derive(Debug)]
enum Error {
Io(std::io::Error),
Minetestmapper,
Todo,
}
#[async_std::main]
async fn main() -> tide::Result<()> {
simplelog::TermLogger::init(
simplelog::LevelFilter::Info,
simplelog::Config::default(),
simplelog::TerminalMode::Mixed,
simplelog::ColorChoice::Auto,
)
.unwrap();
let config = config::Config::default();
assert!(
config.base_url.starts_with('/') && config.base_url.ends_with('/'),
"`base_url` must start and end with `/`"
);
let config = Arc::new(config);
let tasks = Arc::new(RwLock::new(HashMap::new()));
let mut app = tide::new();
app.at(&format!("{}:z/:x/:y", config.base_url)).get({
let config = config.clone();
let tasks = tasks.clone();
move |req| req_tile(req, tasks.clone(), config.clone())
});
app.listen(&config.listen).await?;
Ok(())
}
fn run_minetestmapper(
z: i32,
x: i32,
y: i32,
tile_path: &str,
config: Arc<config::Config>,
) -> Result<(), Error> {
debug!("Generating tile ({},{},{})", z, x, y);
std::process::Command::new(&config.minetestmapper_path)
.args([
"-i",
&config.world_path,
"-o",
tile_path,
"--geometry",
&format!(
"{}:{}+{}+{}",
x * config.tile_size as i32,
-1 - z * config.tile_size as i32,
config.tile_size,
config.tile_size
),
])
.args(&config.minetestmapper_args)
.output()
.map_err(|e| {
error!("Generating tile ({},{},{}): {}", z, x, y, e);
Error::Minetestmapper
})?;
Ok(())
}
fn read_tile_file(tile_path: &str) -> Result<Vec<u8>, Error> {
let mut tile_content = Vec::new();
std::fs::File::open(&tile_path)
.map_err(Error::Io)?
.read(&mut tile_content)
.map_err(Error::Io)?; // TODO resp_tile if error
Ok(tile_content)
}
fn generate_tile(
z: i32,
x: i32,
y: i32,
tile_path: &str,
tasks: Arc<RwLock<HashMap<(i32, i32, i32), Sender<()>>>>,
config: Arc<config::Config>,
) -> Result<(), Error> {
let mut generate = true;
loop {
let mut tasks_guard = tasks.write();
if let Some(sender) = tasks_guard.get(&(z, x, y)) {
let sender = sender.clone();
drop(tasks_guard);
generate = false;
sender.send(()).ok();
} else {
if generate {
let (sender, receiver) = crossbeam_channel::bounded(0);
tasks_guard.insert((z, x, y), sender);
drop(tasks_guard);
let res: Result<(), Error> = try {
if z == config.zoom_default {
run_minetestmapper(z, x, y, tile_path, config)?;
} else {
Err(Error::Todo)?;
}
};
tasks.write().remove(&(z, x, y));
receiver.recv().ok();
res?;
} else {
drop(tasks_guard);
}
return Ok(());
}
}
}
fn resp_tile(
z: i32,
x: i32,
y: i32,
tile_path: &str,
tasks: Arc<RwLock<HashMap<(i32, i32, i32), Sender<()>>>>,
config: Arc<config::Config>,
) -> Result<Vec<u8>, Error> {
generate_tile(z, x, y, tile_path, tasks, config)?;
read_tile_file(tile_path)
}
async fn req_tile(
req: Request<()>,
tasks: Arc<RwLock<HashMap<(i32, i32, i32), Sender<()>>>>,
config: Arc<config::Config>,
) -> tide::Result {
let z: i32 = req.param("z")?.parse()?;
let x: i32 = req.param("x")?.parse()?;
let y: i32 = req.param("y")?.parse()?;
let tile_path = format!("{}/{}/{}/{}.png", config.output_path, z, x, y);
match std::fs::metadata(&tile_path) {
Ok(metadata) => match metadata.modified() {
Ok(modified_time) => {
if SystemTime::now()
.duration_since(modified_time)
.unwrap()
.as_secs() > config.cache_age
{
match resp_tile(z, x, y, &tile_path, tasks, config) {
Ok(tile_content) => Ok(tide::Response::builder(200)
.content_type(http_types::mime::PNG)
.body(tile_content)
.build()),
Err(_) => Ok(tide::StatusCode::InternalServerError.into()),
}
} else {
match read_tile_file(&tile_path) {
Ok(tile_content) => Ok(tide::Response::builder(200)
.content_type(http_types::mime::PNG)
.body(tile_content)
.build()),
Err(_) => Ok(tide::StatusCode::InternalServerError.into()),
}
}
}
Err(e) => {
warn!("Cannot get modified time of `{}`: {}", tile_path, e);
match resp_tile(z, x, y, &tile_path, tasks, config) {
Ok(tile_content) => Ok(tide::Response::builder(200)
.content_type(http_types::mime::PNG)
.body(tile_content)
.build()),
Err(_) => Ok(tide::StatusCode::InternalServerError.into()),
}
}
},
Err(e) => {
if e.kind() == std::io::ErrorKind::NotFound {
debug!("Tile not found `{}`", tile_path);
} else {
warn!("Cannot get metadata of `{}`: {}", tile_path, e);
}
match resp_tile(z, x, y, &tile_path, tasks, config) {
Ok(tile_content) => Ok(tide::Response::builder(200)
.content_type(http_types::mime::PNG)
.body(tile_content)
.build()),
Err(_) => Ok(tide::StatusCode::InternalServerError.into()),
}
}
}
}
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