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1 : // rustc lints/lint groups
2 : // https://doc.rust-lang.org/rustc/lints/groups.html
3 : #![deny(
4 : deprecated,
5 : future_incompatible,
6 : let_underscore,
7 : nonstandard_style,
8 : rust_2024_compatibility
9 : )]
10 : #![warn(clippy::all, clippy::pedantic, clippy::cargo)]
11 : // List of denied lints from the clippy::restriction group.
12 : // https://rust-lang.github.io/rust-clippy/master/index.html#?groups=restriction
13 : #![warn(
14 : clippy::undocumented_unsafe_blocks,
15 : // TODO: Enable once all individual checks are enabled.
16 : //clippy::as_conversions,
17 : clippy::dbg_macro,
18 : clippy::empty_enum_variants_with_brackets,
19 : clippy::exit,
20 : clippy::float_cmp_const,
21 : clippy::lossy_float_literal,
22 : clippy::macro_use_imports,
23 : clippy::manual_ok_or,
24 : // TODO: consider clippy::map_err_ignore
25 : // TODO: consider clippy::mem_forget
26 : clippy::rc_mutex,
27 : clippy::rest_pat_in_fully_bound_structs,
28 : clippy::string_add,
29 : clippy::string_to_string,
30 : clippy::todo,
31 : // TODO: consider clippy::unimplemented
32 : // TODO: consider clippy::unwrap_used
33 : )]
34 : // List of permanently allowed lints.
35 : #![allow(
36 : // It's ok to cast bool to u8, etc.
37 : clippy::cast_lossless,
38 : // Seems unavoidable.
39 : clippy::multiple_crate_versions,
40 : // While #[must_use] is a great feature this check is too noisy.
41 : clippy::must_use_candidate,
42 : // Inline consts, structs, fns, imports, etc. are ok if they're used by
43 : // the following statement(s).
44 : clippy::items_after_statements,
45 : )]
46 : // List of temporarily allowed lints.
47 : // TODO: fix code and reduce list or move to permanent list above.
48 : #![expect(
49 : clippy::cargo_common_metadata,
50 : clippy::cast_possible_truncation,
51 : clippy::cast_possible_wrap,
52 : clippy::cast_precision_loss,
53 : clippy::cast_sign_loss,
54 : clippy::doc_markdown,
55 : clippy::inline_always,
56 : clippy::match_same_arms,
57 : clippy::match_wild_err_arm,
58 : clippy::missing_errors_doc,
59 : clippy::missing_panics_doc,
60 : clippy::module_name_repetitions,
61 : clippy::needless_pass_by_value,
62 : clippy::redundant_closure_for_method_calls,
63 : clippy::similar_names,
64 : clippy::single_match_else,
65 : clippy::struct_excessive_bools,
66 : clippy::struct_field_names,
67 : clippy::too_many_lines,
68 : clippy::unused_self
69 : )]
70 : #![cfg_attr(
71 : any(test, feature = "testing"),
72 : allow(
73 : clippy::needless_raw_string_hashes,
74 : clippy::unreadable_literal,
75 : clippy::unused_async,
76 : )
77 : )]
78 : // List of temporarily allowed lints to unblock beta/nightly.
79 : #![allow(
80 : unknown_lints,
81 : // TODO: 1.82: Add `use<T>` where necessary and remove from this list.
82 : impl_trait_overcaptures,
83 : )]
84 :
85 : use std::{convert::Infallible, future::Future};
86 :
87 : use anyhow::{bail, Context};
88 : use intern::{EndpointIdInt, EndpointIdTag, InternId};
89 : use tokio::task::JoinError;
90 : use tokio_util::sync::CancellationToken;
91 : use tracing::warn;
92 :
93 : pub mod auth;
94 : pub mod cache;
95 : pub mod cancellation;
96 : pub mod compute;
97 : pub mod config;
98 : pub mod console;
99 : pub mod context;
100 : pub mod error;
101 : pub mod http;
102 : pub mod intern;
103 : pub mod jemalloc;
104 : pub mod logging;
105 : pub mod metrics;
106 : pub mod parse;
107 : pub mod protocol2;
108 : pub mod proxy;
109 : pub mod rate_limiter;
110 : pub mod redis;
111 : pub mod sasl;
112 : pub mod scram;
113 : pub mod serverless;
114 : pub mod stream;
115 : pub mod url;
116 : pub mod usage_metrics;
117 : pub mod waiters;
118 :
119 : /// Handle unix signals appropriately.
120 0 : pub async fn handle_signals<F, Fut>(
121 0 : token: CancellationToken,
122 0 : mut refresh_config: F,
123 0 : ) -> anyhow::Result<Infallible>
124 0 : where
125 0 : F: FnMut() -> Fut,
126 0 : Fut: Future<Output = anyhow::Result<()>>,
127 0 : {
128 : use tokio::signal::unix::{signal, SignalKind};
129 :
130 0 : let mut hangup = signal(SignalKind::hangup())?;
131 0 : let mut interrupt = signal(SignalKind::interrupt())?;
132 0 : let mut terminate = signal(SignalKind::terminate())?;
133 :
134 : loop {
135 0 : tokio::select! {
136 : // Hangup is commonly used for config reload.
137 0 : _ = hangup.recv() => {
138 0 : warn!("received SIGHUP");
139 0 : refresh_config().await?;
140 : }
141 : // Shut down the whole application.
142 0 : _ = interrupt.recv() => {
143 0 : warn!("received SIGINT, exiting immediately");
144 0 : bail!("interrupted");
145 : }
146 0 : _ = terminate.recv() => {
147 0 : warn!("received SIGTERM, shutting down once all existing connections have closed");
148 0 : token.cancel();
149 : }
150 : }
151 : }
152 0 : }
153 :
154 : /// Flattens `Result<Result<T>>` into `Result<T>`.
155 0 : pub fn flatten_err<T>(r: Result<anyhow::Result<T>, JoinError>) -> anyhow::Result<T> {
156 0 : r.context("join error").and_then(|x| x)
157 0 : }
158 :
159 : macro_rules! smol_str_wrapper {
160 : ($name:ident) => {
161 : #[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
162 : pub struct $name(smol_str::SmolStr);
163 :
164 : impl $name {
165 : #[allow(unused)]
166 0 : pub(crate) fn as_str(&self) -> &str {
167 0 : self.0.as_str()
168 0 : }
169 : }
170 :
171 : impl std::fmt::Display for $name {
172 3 : fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
173 3 : self.0.fmt(f)
174 3 : }
175 : }
176 :
177 : impl<T> std::cmp::PartialEq<T> for $name
178 : where
179 : smol_str::SmolStr: std::cmp::PartialEq<T>,
180 : {
181 19 : fn eq(&self, other: &T) -> bool {
182 19 : self.0.eq(other)
183 19 : }
184 : }
185 :
186 : impl<T> From<T> for $name
187 : where
188 : smol_str::SmolStr: From<T>,
189 : {
190 164 : fn from(x: T) -> Self {
191 164 : Self(x.into())
192 164 : }
193 : }
194 :
195 : impl AsRef<str> for $name {
196 10 : fn as_ref(&self) -> &str {
197 10 : self.0.as_ref()
198 10 : }
199 : }
200 :
201 : impl std::ops::Deref for $name {
202 : type Target = str;
203 141 : fn deref(&self) -> &str {
204 141 : &*self.0
205 141 : }
206 : }
207 :
208 : impl<'de> serde::de::Deserialize<'de> for $name {
209 0 : fn deserialize<D: serde::de::Deserializer<'de>>(d: D) -> Result<Self, D::Error> {
210 0 : <smol_str::SmolStr as serde::de::Deserialize<'de>>::deserialize(d).map(Self)
211 0 : }
212 : }
213 :
214 : impl serde::Serialize for $name {
215 0 : fn serialize<S: serde::Serializer>(&self, s: S) -> Result<S::Ok, S::Error> {
216 0 : self.0.serialize(s)
217 0 : }
218 : }
219 : };
220 : }
221 :
222 : const POOLER_SUFFIX: &str = "-pooler";
223 :
224 : impl EndpointId {
225 3 : fn normalize(&self) -> Self {
226 3 : if let Some(stripped) = self.as_ref().strip_suffix(POOLER_SUFFIX) {
227 0 : stripped.into()
228 : } else {
229 3 : self.clone()
230 : }
231 3 : }
232 :
233 0 : fn normalize_intern(&self) -> EndpointIdInt {
234 0 : if let Some(stripped) = self.as_ref().strip_suffix(POOLER_SUFFIX) {
235 0 : EndpointIdTag::get_interner().get_or_intern(stripped)
236 : } else {
237 0 : self.into()
238 : }
239 0 : }
240 : }
241 :
242 : // 90% of role name strings are 20 characters or less.
243 : smol_str_wrapper!(RoleName);
244 : // 50% of endpoint strings are 23 characters or less.
245 : smol_str_wrapper!(EndpointId);
246 : // 50% of branch strings are 23 characters or less.
247 : smol_str_wrapper!(BranchId);
248 : // 90% of project strings are 23 characters or less.
249 : smol_str_wrapper!(ProjectId);
250 :
251 : // will usually equal endpoint ID
252 : smol_str_wrapper!(EndpointCacheKey);
253 :
254 : smol_str_wrapper!(DbName);
255 :
256 : // postgres hostname, will likely be a port:ip addr
257 : smol_str_wrapper!(Host);
258 :
259 : // Endpoints are a bit tricky. Rare they might be branches or projects.
260 : impl EndpointId {
261 0 : pub(crate) fn is_endpoint(&self) -> bool {
262 0 : self.0.starts_with("ep-")
263 0 : }
264 0 : pub(crate) fn is_branch(&self) -> bool {
265 0 : self.0.starts_with("br-")
266 0 : }
267 : // pub(crate) fn is_project(&self) -> bool {
268 : // !self.is_endpoint() && !self.is_branch()
269 : // }
270 0 : pub(crate) fn as_branch(&self) -> BranchId {
271 0 : BranchId(self.0.clone())
272 0 : }
273 0 : pub(crate) fn as_project(&self) -> ProjectId {
274 0 : ProjectId(self.0.clone())
275 0 : }
276 : }
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