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</pre></div><pre class="rust"><code><span class="doccomment">//! Easily manage Actix Web's settings from a TOML file and environment variables.
//!
//! To get started add a [`Settings::parse_toml("./Server.toml")`](Settings::parse_toml) call to the
//! top of your main function. This will create a template file with descriptions of all the
//! configurable settings. You can change or remove anything in that file and it will be picked up
//! the next time you run your application.
//!
//! Overriding parts of the file can be done from values using [`Settings::override_field`] or from
//! the environment using [`Settings::override_field_with_env_var`].
//!
//! # Examples
//!
//! See examples folder on GitHub for complete example.
//!
//! ```ignore
//! # use actix_web::{
//! # get,
//! # middleware::{Compress, Condition, Logger},
//! # web, App, HttpServer,
//! # };
//! use actix_settings::{ApplySettings as _, Mode, Settings};
//!
//! #[actix_web::main]
//! async fn main() -> std::io::Result<()> {
//! let mut settings = Settings::parse_toml("./Server.toml")
//! .expect("Failed to parse `Settings` from Server.toml");
//!
//! // If the environment variable `$APPLICATION__HOSTS` is set,
//! // have its value override the `settings.actix.hosts` setting:
//! Settings::override_field_with_env_var(&mut settings.actix.hosts, "APPLICATION__HOSTS")?;
//!
//! init_logger(&settings);
//!
//! HttpServer::new({
//! // clone settings into each worker thread
//! let settings = settings.clone();
//!
//! move || {
//! App::new()
//! // Include this `.wrap()` call for compression settings to take effect
//! .wrap(Condition::new(
//! settings.actix.enable_compression,
//! Compress::default(),
//! ))
//!
//! // add request logger
//! .wrap(Logger::default())
//!
//! // make `Settings` available to handlers
//! .app_data(web::Data::new(settings.clone()))
//!
//! // add request handlers as normal
//! .service(index)
//! }
//! })
//! // apply the `Settings` to Actix Web's `HttpServer`
//! .apply_settings(&settings)
//! .run()
//! .await
//! }
//! ```
</span><span class="attr">#![forbid(unsafe_code)]
#![deny(rust_2018_idioms, nonstandard_style)]
#![warn(future_incompatible, missing_docs, missing_debug_implementations)]
#![doc(html_logo_url = <span class="string">"https://actix.rs/img/logo.png"</span>)]
#![doc(html_favicon_url = <span class="string">"https://actix.rs/favicon.ico"</span>)]
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
</span><span class="kw">use </span>std::{
env, fmt,
fs::File,
io::{Read <span class="kw">as _</span>, Write <span class="kw">as _</span>},
path::Path,
time::Duration,
};
<span class="kw">use </span>actix_http::{Request, Response};
<span class="kw">use </span>actix_service::IntoServiceFactory;
<span class="kw">use </span>actix_web::{
body::MessageBody,
dev::{AppConfig, ServiceFactory},
http::KeepAlive <span class="kw">as </span>ActixKeepAlive,
Error <span class="kw">as </span>WebError, HttpServer,
};
<span class="kw">use </span>serde::{de, Deserialize};
<span class="attr">#[macro_use]
</span><span class="kw">mod </span>error;
<span class="kw">mod </span>parse;
<span class="kw">mod </span>settings;
<span class="kw">pub use </span><span class="self">self</span>::{
error::Error,
parse::Parse,
settings::{
ActixSettings, Address, Backlog, KeepAlive, MaxConnectionRate, MaxConnections, Mode,
NumWorkers, Timeout, Tls,
},
};
<span class="doccomment">/// Convenience type alias for `Result<T, AtError>`.
</span><span class="kw">type </span>AsResult<T> = std::result::Result<T, Error>;
<span class="doccomment">/// Wrapper for server and application-specific settings.
</span><span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Hash, Deserialize)]
#[serde(bound = <span class="string">"A: Deserialize<'de>"</span>)]
</span><span class="kw">pub struct </span>BasicSettings<A> {
<span class="doccomment">/// Actix Web server settings.
</span><span class="kw">pub </span>actix: ActixSettings,
<span class="doccomment">/// Application-specific settings.
</span><span class="kw">pub </span>application: A,
}
<span class="doccomment">/// Convenience type alias for [`BasicSettings`] with no defined application-specific settings.
</span><span class="kw">pub type </span>Settings = BasicSettings<NoSettings>;
<span class="doccomment">/// Marker type representing no defined application-specific settings.
</span><span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Hash, Deserialize)]
#[non_exhaustive]
</span><span class="kw">pub struct </span>NoSettings {<span class="comment">/* NOTE: turning this into a unit struct will cause deserialization failures. */</span>}
<span class="kw">impl</span><A> BasicSettings<A>
<span class="kw">where
</span>A: de::DeserializeOwned,
{
<span class="comment">// NOTE **DO NOT** mess with the ordering of the tables in the default template.
// Especially the `[application]` table needs to be last in order
// for some tests to keep working.
</span><span class="doccomment">/// Default settings file contents.
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const </span>DEFAULT_TOML_TEMPLATE: <span class="kw-2">&</span><span class="lifetime">'static </span>str = <span class="macro">include_str!</span>(<span class="string">"./defaults.toml"</span>);
<span class="doccomment">/// Parse an instance of `Self` from a TOML file located at `filepath`.
///
/// If the file doesn't exist, it is generated from the default TOML template, after which the
/// newly generated file is read in and parsed.
</span><span class="kw">pub fn </span>parse_toml<P>(filepath: P) -> AsResult<<span class="self">Self</span>>
<span class="kw">where
</span>P: AsRef<Path>,
{
<span class="kw">let </span>filepath = filepath.as_ref();
<span class="kw">if </span>!filepath.exists() {
<span class="self">Self</span>::write_toml_file(filepath)<span class="question-mark">?</span>;
}
<span class="kw">let </span><span class="kw-2">mut </span>f = File::open(filepath)<span class="question-mark">?</span>;
<span class="kw">let </span>len_guess = f.metadata().map(|md| md.len()).unwrap_or(<span class="number">128</span>);
<span class="kw">let </span><span class="kw-2">mut </span>contents = String::with_capacity(len_guess <span class="kw">as </span>usize);
f.read_to_string(<span class="kw-2">&mut </span>contents)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(toml::from_str::<<span class="self">Self</span>>(<span class="kw-2">&</span>contents)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Parse an instance of `Self` straight from the default TOML template.
</span><span class="kw">pub fn </span>from_default_template() -> <span class="self">Self </span>{
<span class="self">Self</span>::from_template(<span class="self">Self</span>::DEFAULT_TOML_TEMPLATE).unwrap()
}
<span class="doccomment">/// Parse an instance of `Self` straight from the default TOML template.
</span><span class="kw">pub fn </span>from_template(template: <span class="kw-2">&</span>str) -> AsResult<<span class="self">Self</span>> {
<span class="prelude-val">Ok</span>(toml::from_str(template)<span class="question-mark">?</span>)
}
<span class="doccomment">/// Writes the default TOML template to a new file, located at `filepath`.
///
/// # Errors
///
/// Returns a [`FileExists`](crate::Error::FileExists) error if a file already exists at that
/// location.
</span><span class="kw">pub fn </span>write_toml_file<P>(filepath: P) -> AsResult<()>
<span class="kw">where
</span>P: AsRef<Path>,
{
<span class="kw">let </span>filepath = filepath.as_ref();
<span class="kw">if </span>filepath.exists() {
<span class="kw">return </span><span class="prelude-val">Err</span>(Error::FileExists(filepath.to_path_buf()));
}
<span class="kw">let </span><span class="kw-2">mut </span>file = File::create(filepath)<span class="question-mark">?</span>;
file.write_all(<span class="self">Self</span>::DEFAULT_TOML_TEMPLATE.trim().as_bytes())<span class="question-mark">?</span>;
file.flush()<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(())
}
<span class="doccomment">/// Attempts to parse `value` and override the referenced `field`.
///
/// # Examples
/// ```
/// use actix_settings::{Settings, Mode};
///
/// # fn inner() -> Result<(), actix_settings::Error> {
/// let mut settings = Settings::from_default_template();
/// assert_eq!(settings.actix.mode, Mode::Development);
///
/// Settings::override_field(&mut settings.actix.mode, "production")?;
/// assert_eq!(settings.actix.mode, Mode::Production);
/// # Ok(()) }
/// ```
</span><span class="kw">pub fn </span>override_field<F, V>(field: <span class="kw-2">&mut </span>F, value: V) -> AsResult<()>
<span class="kw">where
</span>F: Parse,
V: AsRef<str>,
{
<span class="kw-2">*</span>field = F::parse(value.as_ref())<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(())
}
<span class="doccomment">/// Attempts to read an environment variable, parse it, and override the referenced `field`.
///
/// # Examples
/// ```
/// use actix_settings::{Settings, Mode};
///
/// std::env::set_var("OVERRIDE__MODE", "production");
///
/// # fn inner() -> Result<(), actix_settings::Error> {
/// let mut settings = Settings::from_default_template();
/// assert_eq!(settings.actix.mode, Mode::Development);
///
/// Settings::override_field_with_env_var(&mut settings.actix.mode, "OVERRIDE__MODE")?;
/// assert_eq!(settings.actix.mode, Mode::Production);
/// # Ok(()) }
/// ```
</span><span class="kw">pub fn </span>override_field_with_env_var<F, N>(field: <span class="kw-2">&mut </span>F, var_name: N) -> AsResult<()>
<span class="kw">where
</span>F: Parse,
N: AsRef<str>,
{
<span class="kw">match </span>env::var(var_name.as_ref()) {
<span class="prelude-val">Err</span>(env::VarError::NotPresent) => <span class="prelude-val">Ok</span>((<span class="comment">/*NOP*/</span>)),
<span class="prelude-val">Err</span>(var_error) => <span class="prelude-val">Err</span>(Error::from(var_error)),
<span class="prelude-val">Ok</span>(value) => <span class="self">Self</span>::override_field(field, value),
}
}
}
<span class="doccomment">/// Extension trait for applying parsed settings to the server object.
</span><span class="kw">pub trait </span>ApplySettings<S> {
<span class="doccomment">/// Apply some settings object value to `self`.
</span><span class="attr">#[must_use]
</span><span class="kw">fn </span>apply_settings(<span class="self">self</span>, settings: <span class="kw-2">&</span>S) -> <span class="self">Self</span>;
}
<span class="kw">impl</span><F, I, S, B> ApplySettings<ActixSettings> <span class="kw">for </span>HttpServer<F, I, S, B>
<span class="kw">where
</span>F: Fn() -> I + Send + Clone + <span class="lifetime">'static</span>,
I: IntoServiceFactory<S, Request>,
S: ServiceFactory<Request, Config = AppConfig> + <span class="lifetime">'static</span>,
S::Error: Into<WebError> + <span class="lifetime">'static</span>,
S::InitError: fmt::Debug,
S::Response: Into<Response<B>> + <span class="lifetime">'static</span>,
S::Future: <span class="lifetime">'static</span>,
B: MessageBody + <span class="lifetime">'static</span>,
{
<span class="kw">fn </span>apply_settings(<span class="kw-2">mut </span><span class="self">self</span>, settings: <span class="kw-2">&</span>ActixSettings) -> <span class="self">Self </span>{
<span class="kw">if </span>settings.tls.enabled {
<span class="comment">// for Address { host, port } in &settings.actix.hosts {
// self = self.bind(format!("{}:{}", host, port))
// .unwrap(/*TODO*/);
// }
</span><span class="macro">unimplemented!</span>(<span class="string">"[ApplySettings] TLS support has not been implemented yet."</span>);
} <span class="kw">else </span>{
<span class="kw">for </span>Address { host, port } <span class="kw">in </span><span class="kw-2">&</span>settings.hosts {
<span class="self">self </span>= <span class="self">self</span>.bind(<span class="macro">format!</span>(<span class="string">"{host}:{port}"</span>))
.unwrap(<span class="comment">/*TODO*/</span>);
}
}
<span class="self">self </span>= <span class="kw">match </span>settings.num_workers {
NumWorkers::Default => <span class="self">self</span>,
NumWorkers::Manual(n) => <span class="self">self</span>.workers(n),
};
<span class="self">self </span>= <span class="kw">match </span>settings.backlog {
Backlog::Default => <span class="self">self</span>,
Backlog::Manual(n) => <span class="self">self</span>.backlog(n <span class="kw">as </span>u32),
};
<span class="self">self </span>= <span class="kw">match </span>settings.max_connections {
MaxConnections::Default => <span class="self">self</span>,
MaxConnections::Manual(n) => <span class="self">self</span>.max_connections(n),
};
<span class="self">self </span>= <span class="kw">match </span>settings.max_connection_rate {
MaxConnectionRate::Default => <span class="self">self</span>,
MaxConnectionRate::Manual(n) => <span class="self">self</span>.max_connection_rate(n),
};
<span class="self">self </span>= <span class="kw">match </span>settings.keep_alive {
KeepAlive::Default => <span class="self">self</span>,
KeepAlive::Disabled => <span class="self">self</span>.keep_alive(ActixKeepAlive::Disabled),
KeepAlive::Os => <span class="self">self</span>.keep_alive(ActixKeepAlive::Os),
KeepAlive::Seconds(n) => <span class="self">self</span>.keep_alive(Duration::from_secs(n <span class="kw">as </span>u64)),
};
<span class="self">self </span>= <span class="kw">match </span>settings.client_timeout {
Timeout::Default => <span class="self">self</span>,
Timeout::Milliseconds(n) => {
<span class="self">self</span>.client_request_timeout(Duration::from_millis(n <span class="kw">as </span>u64))
}
Timeout::Seconds(n) => <span class="self">self</span>.client_request_timeout(Duration::from_secs(n <span class="kw">as </span>u64)),
};
<span class="self">self </span>= <span class="kw">match </span>settings.client_shutdown {
Timeout::Default => <span class="self">self</span>,
Timeout::Milliseconds(n) => {
<span class="self">self</span>.client_disconnect_timeout(Duration::from_millis(n <span class="kw">as </span>u64))
}
Timeout::Seconds(n) => <span class="self">self</span>.client_disconnect_timeout(Duration::from_secs(n <span class="kw">as </span>u64)),
};
<span class="self">self </span>= <span class="kw">match </span>settings.shutdown_timeout {
Timeout::Default => <span class="self">self</span>,
Timeout::Milliseconds(<span class="kw">_</span>) => <span class="self">self</span>.shutdown_timeout(<span class="number">1</span>),
Timeout::Seconds(n) => <span class="self">self</span>.shutdown_timeout(n <span class="kw">as </span>u64),
};
<span class="self">self
</span>}
}
<span class="kw">impl</span><F, I, S, B, A> ApplySettings<BasicSettings<A>> <span class="kw">for </span>HttpServer<F, I, S, B>
<span class="kw">where
</span>F: Fn() -> I + Send + Clone + <span class="lifetime">'static</span>,
I: IntoServiceFactory<S, Request>,
S: ServiceFactory<Request, Config = AppConfig> + <span class="lifetime">'static</span>,
S::Error: Into<WebError> + <span class="lifetime">'static</span>,
S::InitError: fmt::Debug,
S::Response: Into<Response<B>> + <span class="lifetime">'static</span>,
S::Future: <span class="lifetime">'static</span>,
B: MessageBody + <span class="lifetime">'static</span>,
A: de::DeserializeOwned,
{
<span class="kw">fn </span>apply_settings(<span class="self">self</span>, settings: <span class="kw-2">&</span>BasicSettings<A>) -> <span class="self">Self </span>{
<span class="self">self</span>.apply_settings(<span class="kw-2">&</span>settings.actix)
}
}
<span class="attr">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span>actix_web::App;
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="attr">#[test]
</span><span class="kw">fn </span>apply_settings() {
<span class="kw">let </span>settings = Settings::parse_toml(<span class="string">"Server.toml"</span>).unwrap();
<span class="kw">let _ </span>= HttpServer::new(App::new).apply_settings(<span class="kw-2">&</span>settings);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_hosts() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(
settings.actix.hosts,
<span class="macro">vec!</span>[Address {
host: <span class="string">"0.0.0.0"</span>.into(),
port: <span class="number">9000
</span>},]
);
Settings::override_field(
<span class="kw-2">&mut </span>settings.actix.hosts,
<span class="string">r#"[
["0.0.0.0", 1234],
["localhost", 2345]
]"#</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(
settings.actix.hosts,
<span class="macro">vec!</span>[
Address {
host: <span class="string">"0.0.0.0"</span>.into(),
port: <span class="number">1234
</span>},
Address {
host: <span class="string">"localhost"</span>.into(),
port: <span class="number">2345
</span>},
]
);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_hosts() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(
settings.actix.hosts,
<span class="macro">vec!</span>[Address {
host: <span class="string">"0.0.0.0"</span>.into(),
port: <span class="number">9000
</span>},]
);
std::env::set_var(
<span class="string">"OVERRIDE__HOSTS"</span>,
<span class="string">r#"[
["0.0.0.0", 1234],
["localhost", 2345]
]"#</span>,
);
Settings::override_field_with_env_var(<span class="kw-2">&mut </span>settings.actix.hosts, <span class="string">"OVERRIDE__HOSTS"</span>)
.unwrap();
<span class="macro">assert_eq!</span>(
settings.actix.hosts,
<span class="macro">vec!</span>[
Address {
host: <span class="string">"0.0.0.0"</span>.into(),
port: <span class="number">1234
</span>},
Address {
host: <span class="string">"localhost"</span>.into(),
port: <span class="number">2345
</span>},
]
);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_mode() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.mode, Mode::Development);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.mode, <span class="string">"production"</span>).unwrap();
<span class="macro">assert_eq!</span>(settings.actix.mode, Mode::Production);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_mode() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.mode, Mode::Development);
std::env::set_var(<span class="string">"OVERRIDE__MODE"</span>, <span class="string">"production"</span>);
Settings::override_field_with_env_var(<span class="kw-2">&mut </span>settings.actix.mode, <span class="string">"OVERRIDE__MODE"</span>).unwrap();
<span class="macro">assert_eq!</span>(settings.actix.mode, Mode::Production);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_enable_compression() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert!</span>(settings.actix.enable_compression);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.enable_compression, <span class="string">"false"</span>).unwrap();
<span class="macro">assert!</span>(!settings.actix.enable_compression);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_enable_compression() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert!</span>(settings.actix.enable_compression);
std::env::set_var(<span class="string">"OVERRIDE__ENABLE_COMPRESSION"</span>, <span class="string">"false"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.enable_compression,
<span class="string">"OVERRIDE__ENABLE_COMPRESSION"</span>,
)
.unwrap();
<span class="macro">assert!</span>(!settings.actix.enable_compression);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_enable_log() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert!</span>(settings.actix.enable_log);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.enable_log, <span class="string">"false"</span>).unwrap();
<span class="macro">assert!</span>(!settings.actix.enable_log);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_enable_log() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert!</span>(settings.actix.enable_log);
std::env::set_var(<span class="string">"OVERRIDE__ENABLE_LOG"</span>, <span class="string">"false"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.enable_log,
<span class="string">"OVERRIDE__ENABLE_LOG"</span>,
)
.unwrap();
<span class="macro">assert!</span>(!settings.actix.enable_log);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_num_workers() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.num_workers, NumWorkers::Default);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.num_workers, <span class="string">"42"</span>).unwrap();
<span class="macro">assert_eq!</span>(settings.actix.num_workers, NumWorkers::Manual(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_num_workers() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.num_workers, NumWorkers::Default);
std::env::set_var(<span class="string">"OVERRIDE__NUM_WORKERS"</span>, <span class="string">"42"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.num_workers,
<span class="string">"OVERRIDE__NUM_WORKERS"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(settings.actix.num_workers, NumWorkers::Manual(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_backlog() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.backlog, Backlog::Default);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.backlog, <span class="string">"42"</span>).unwrap();
<span class="macro">assert_eq!</span>(settings.actix.backlog, Backlog::Manual(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_backlog() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.backlog, Backlog::Default);
std::env::set_var(<span class="string">"OVERRIDE__BACKLOG"</span>, <span class="string">"42"</span>);
Settings::override_field_with_env_var(<span class="kw-2">&mut </span>settings.actix.backlog, <span class="string">"OVERRIDE__BACKLOG"</span>)
.unwrap();
<span class="macro">assert_eq!</span>(settings.actix.backlog, Backlog::Manual(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_max_connections() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.max_connections, MaxConnections::Default);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.max_connections, <span class="string">"42"</span>).unwrap();
<span class="macro">assert_eq!</span>(settings.actix.max_connections, MaxConnections::Manual(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_max_connections() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.max_connections, MaxConnections::Default);
std::env::set_var(<span class="string">"OVERRIDE__MAX_CONNECTIONS"</span>, <span class="string">"42"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.max_connections,
<span class="string">"OVERRIDE__MAX_CONNECTIONS"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(settings.actix.max_connections, MaxConnections::Manual(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_max_connection_rate() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(
settings.actix.max_connection_rate,
MaxConnectionRate::Default
);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.max_connection_rate, <span class="string">"42"</span>).unwrap();
<span class="macro">assert_eq!</span>(
settings.actix.max_connection_rate,
MaxConnectionRate::Manual(<span class="number">42</span>)
);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_max_connection_rate() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(
settings.actix.max_connection_rate,
MaxConnectionRate::Default
);
std::env::set_var(<span class="string">"OVERRIDE__MAX_CONNECTION_RATE"</span>, <span class="string">"42"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.max_connection_rate,
<span class="string">"OVERRIDE__MAX_CONNECTION_RATE"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(
settings.actix.max_connection_rate,
MaxConnectionRate::Manual(<span class="number">42</span>)
);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_keep_alive() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.keep_alive, KeepAlive::Default);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.keep_alive, <span class="string">"42 seconds"</span>).unwrap();
<span class="macro">assert_eq!</span>(settings.actix.keep_alive, KeepAlive::Seconds(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_keep_alive() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.keep_alive, KeepAlive::Default);
std::env::set_var(<span class="string">"OVERRIDE__KEEP_ALIVE"</span>, <span class="string">"42 seconds"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.keep_alive,
<span class="string">"OVERRIDE__KEEP_ALIVE"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(settings.actix.keep_alive, KeepAlive::Seconds(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_client_timeout() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.client_timeout, Timeout::Default);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.client_timeout, <span class="string">"42 seconds"</span>).unwrap();
<span class="macro">assert_eq!</span>(settings.actix.client_timeout, Timeout::Seconds(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_client_timeout() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.client_timeout, Timeout::Default);
std::env::set_var(<span class="string">"OVERRIDE__CLIENT_TIMEOUT"</span>, <span class="string">"42 seconds"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.client_timeout,
<span class="string">"OVERRIDE__CLIENT_TIMEOUT"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(settings.actix.client_timeout, Timeout::Seconds(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_client_shutdown() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.client_shutdown, Timeout::Default);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.client_shutdown, <span class="string">"42 seconds"</span>).unwrap();
<span class="macro">assert_eq!</span>(settings.actix.client_shutdown, Timeout::Seconds(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_client_shutdown() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.client_shutdown, Timeout::Default);
std::env::set_var(<span class="string">"OVERRIDE__CLIENT_SHUTDOWN"</span>, <span class="string">"42 seconds"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.client_shutdown,
<span class="string">"OVERRIDE__CLIENT_SHUTDOWN"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(settings.actix.client_shutdown, Timeout::Seconds(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_shutdown_timeout() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.shutdown_timeout, Timeout::Default);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.shutdown_timeout, <span class="string">"42 seconds"</span>).unwrap();
<span class="macro">assert_eq!</span>(settings.actix.shutdown_timeout, Timeout::Seconds(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_shutdown_timeout() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(settings.actix.shutdown_timeout, Timeout::Default);
std::env::set_var(<span class="string">"OVERRIDE__SHUTDOWN_TIMEOUT"</span>, <span class="string">"42 seconds"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.shutdown_timeout,
<span class="string">"OVERRIDE__SHUTDOWN_TIMEOUT"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(settings.actix.shutdown_timeout, Timeout::Seconds(<span class="number">42</span>));
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_tls_enabled() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert!</span>(!settings.actix.tls.enabled);
Settings::override_field(<span class="kw-2">&mut </span>settings.actix.tls.enabled, <span class="string">"true"</span>).unwrap();
<span class="macro">assert!</span>(settings.actix.tls.enabled);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_tls_enabled() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert!</span>(!settings.actix.tls.enabled);
std::env::set_var(<span class="string">"OVERRIDE__TLS_ENABLED"</span>, <span class="string">"true"</span>);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.tls.enabled,
<span class="string">"OVERRIDE__TLS_ENABLED"</span>,
)
.unwrap();
<span class="macro">assert!</span>(settings.actix.tls.enabled);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_tls_certificate() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(
settings.actix.tls.certificate,
Path::new(<span class="string">"path/to/cert/cert.pem"</span>)
);
Settings::override_field(
<span class="kw-2">&mut </span>settings.actix.tls.certificate,
<span class="string">"/overridden/path/to/cert/cert.pem"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(
settings.actix.tls.certificate,
Path::new(<span class="string">"/overridden/path/to/cert/cert.pem"</span>)
);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_tls_certificate() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(
settings.actix.tls.certificate,
Path::new(<span class="string">"path/to/cert/cert.pem"</span>)
);
std::env::set_var(
<span class="string">"OVERRIDE__TLS_CERTIFICATE"</span>,
<span class="string">"/overridden/path/to/cert/cert.pem"</span>,
);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.tls.certificate,
<span class="string">"OVERRIDE__TLS_CERTIFICATE"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(
settings.actix.tls.certificate,
Path::new(<span class="string">"/overridden/path/to/cert/cert.pem"</span>)
);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_tls_private_key() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(
settings.actix.tls.private_key,
Path::new(<span class="string">"path/to/cert/key.pem"</span>)
);
Settings::override_field(
<span class="kw-2">&mut </span>settings.actix.tls.private_key,
<span class="string">"/overridden/path/to/cert/key.pem"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(
settings.actix.tls.private_key,
Path::new(<span class="string">"/overridden/path/to/cert/key.pem"</span>)
);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_field_with_env_var_tls_private_key() {
<span class="kw">let </span><span class="kw-2">mut </span>settings = Settings::from_default_template();
<span class="macro">assert_eq!</span>(
settings.actix.tls.private_key,
Path::new(<span class="string">"path/to/cert/key.pem"</span>)
);
std::env::set_var(
<span class="string">"OVERRIDE__TLS_PRIVATE_KEY"</span>,
<span class="string">"/overridden/path/to/cert/key.pem"</span>,
);
Settings::override_field_with_env_var(
<span class="kw-2">&mut </span>settings.actix.tls.private_key,
<span class="string">"OVERRIDE__TLS_PRIVATE_KEY"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(
settings.actix.tls.private_key,
Path::new(<span class="string">"/overridden/path/to/cert/key.pem"</span>)
);
}
<span class="attr">#[test]
</span><span class="kw">fn </span>override_extended_field_with_custom_type() {
<span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Deserialize)]
</span><span class="kw">struct </span>NestedSetting {
foo: String,
bar: bool,
}
<span class="attr">#[derive(Debug, Clone, PartialEq, Eq, Deserialize)]
#[serde(rename_all = <span class="string">"kebab-case"</span>)]
</span><span class="kw">struct </span>AppSettings {
example_name: String,
nested_field: NestedSetting,
}
<span class="kw">type </span>CustomSettings = BasicSettings<AppSettings>;
<span class="kw">let </span><span class="kw-2">mut </span>settings = CustomSettings::from_template(
<span class="kw-2">&</span>(CustomSettings::DEFAULT_TOML_TEMPLATE.to_string()
<span class="comment">// NOTE: Add these entries to the `[application]` table:
</span>+ <span class="string">"\nexample-name = \"example value\""
</span>+ <span class="string">"\nnested-field = { foo = \"foo\", bar = false }"</span>),
)
.unwrap();
<span class="macro">assert_eq!</span>(
settings.application,
AppSettings {
example_name: <span class="string">"example value"</span>.into(),
nested_field: NestedSetting {
foo: <span class="string">"foo"</span>.into(),
bar: <span class="bool-val">false</span>,
},
}
);
CustomSettings::override_field(
<span class="kw-2">&mut </span>settings.application.example_name,
<span class="string">"/overridden/path/to/cert/key.pem"</span>,
)
.unwrap();
<span class="macro">assert_eq!</span>(
settings.application,
AppSettings {
example_name: <span class="string">"/overridden/path/to/cert/key.pem"</span>.into(),
nested_field: NestedSetting {
foo: <span class="string">"foo"</span>.into(),
bar: <span class="bool-val">false</span>,
},
}
);
}
}
</code></pre></div></section></main></body></html>