package transport-validator

this is the rust tool used by the french ministry for
transport (deployed at https://transport.data.gouv.fr/validation),
patched to not include the server mode it usually has (i don't want to
constantly compile another copy of actix-web)

2 files changed, 146 insertions, 0 deletions

diff --git a/pkgs/overlay.nix b/pkgs/overlay.nix
index f40aac1..4d1d55d 100644
--- a/pkgs/overlay.nix
+++ b/pkgs/overlay.nix
@@ -75,6 +75,29 @@ in
     doCheck = false;
   };
 
+  transport_validator = rustPlatform.buildRustPackage rec {
+    pname = "transport-validator";
+    version = "git";
+    src = self.fetchFromGitHub {
+      owner = "etalab";
+      repo = pname;
+      rev = "f50bee8af83af04805b1b4fcca334152d382c276";
+      hash = "sha256-MB66OkSldL0Uy9N0aNOWr293R1Wisu/r0IZNC08m/Ps=";
+    };
+
+    # i patch the Cargo.toml to have it optionally not depend on actix
+    buildNoDefaultFeatures = true;
+    patches = [ ./patches/transport-validator-without-daemon.patch ];
+
+    cargoLock.lockFile = "${src}/Cargo.lock";
+    # binary name is `main` for some reason
+    postInstall = ''
+      mv $out/bin/main $out/bin/transport-validator
+    '';
+
+    meta.mainProgram = "transport-validator";
+  };
+
   kijetesantakaluotokieni = self.rustPlatform.buildRustPackage rec {
     pname = "kijetesantakaluotokieni";
     version = "git";
diff --git a/pkgs/patches/transport-validator-without-daemon.patch b/pkgs/patches/transport-validator-without-daemon.patch
new file mode 100644
index 0000000..1703cbe
--- /dev/null
+++ b/pkgs/patches/transport-validator-without-daemon.patch
@@ -0,0 +1,123 @@
+From c9d0a4df3dbad5ed6cf1dd6d70e70f926cf42bb0 Mon Sep 17 00:00:00 2001
+From: stuebinm <stuebinm@disroot.org>
+Date: Mon, 15 Apr 2024 21:01:27 +0200
+Subject: [PATCH] make daemon support optional behind a cargo feature
+
+This greatly saves on compile times and binary size
+(282 vs. 181 crates, and 141 MiB vs 47 MiB for debug builds,
+8 MiB vs 3.2 MiB for release builds)
+---
+ Cargo.toml      | 15 ++++++++++-----
+ readme.md       |  6 ++++++
+ src/bin/main.rs | 18 +++++++++++++++---
+ src/lib.rs      |  1 +
+ 4 files changed, 32 insertions(+), 8 deletions(-)
+
+diff --git a/Cargo.toml b/Cargo.toml
+index df15b04..94c9e19 100644
+--- a/Cargo.toml
++++ b/Cargo.toml
+@@ -9,14 +9,19 @@ lto = true          # Enable Link Time Optimization
+ codegen-units = 1   # Reduce number of codegen units to increase optimizations.
+ panic = 'abort'     # Abort on panic
+ 
++[features]
++default = ["daemon"]
++daemon = ["actix-web", "actix-rt", "futures", "read-url", "env_logger"]
++read-url = ["gtfs-structures/read-url"]
++
+ [dependencies]
+ chrono = { version = "0.4", features = ["serde"] }
+ chrono-tz = "0.8"
+-env_logger = "0.10"
++env_logger = { version = "0.10", optional = true }
+ anyhow = "1"
+-futures = "0.3"
++futures = { version = "0.3", optional = true }
+ geo = "0.27"
+-gtfs-structures = "0.40"
++gtfs-structures = { version = "0.40", default-features = false }
+ iso4217 = "0.3"
+ isolang = "2.1"
+ itertools = "0.12"
+@@ -26,8 +31,8 @@ serde_json = "1.0"
+ serde_yaml = "0.9"
+ structopt = "0.3"
+ url = "2"
+-actix-web = "4.0"
+-actix-rt = "2"
++actix-web = { version = "4.0", optional = true }
++actix-rt = { version = "2", optional = true }
+ geojson = "0.24"
+ rgb = "0.8"
+ 
+diff --git a/readme.md b/readme.md
+index 667a2f1..f8e175b 100644
+--- a/readme.md
++++ b/readme.md
+@@ -317,6 +317,12 @@ cargo run --release -- -i some_gtfs.zip
+ cargo run --release -- -i https://example.com/network.gfts
+ ```
+ 
++If you do not intend to run the validator as a dæmon, it can be compiled without dæmon support, saving on compile time and binary size:
++
++```
++cargo run --release --no-default-features -- -i some_gtfs.zip
++```
++
+ ### Run as a dæmon
+ 
+ The validator can run as a HTTP dæmon to validate any file from a url.
+diff --git a/src/bin/main.rs b/src/bin/main.rs
+index 52d93a9..e9bd7f2 100644
+--- a/src/bin/main.rs
++++ b/src/bin/main.rs
+@@ -1,4 +1,6 @@
+-use validator::{custom_rules, daemon, validate};
++#[cfg(feature = "daemon")]
++use validator::daemon;
++use validator::{custom_rules, validate};
+ 
+ use structopt::clap::arg_enum;
+ use structopt::StructOpt;
+@@ -45,6 +47,7 @@ struct Opt {
+ }
+ 
+ fn main() -> Result<(), anyhow::Error> {
++    #[cfg(feature = "daemon")]
+     env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
+ 
+     let opt = Opt::from_args();
+@@ -59,8 +62,17 @@ fn main() -> Result<(), anyhow::Error> {
+         };
+         println!("{}", serialized);
+     } else {
+-        log::info!("Starting the validator as a dæmon");
+-        daemon::run_server()?;
++        #[cfg(feature = "daemon")]
++        {
++            log::info!("Starting the validator as a dæmon");
++            daemon::run_server()?;
++        }
++        #[cfg(not(feature = "daemon"))]
++        {
++            eprintln!("transport-validator was compiled without support for running as daemon.");
++            eprintln!("use -i to supply a local file to test instead.");
++            std::process::exit(1);
++        }
+     }
+     Ok(())
+ }
+diff --git a/src/lib.rs b/src/lib.rs
+index d0e76f9..c4e8188 100644
+--- a/src/lib.rs
++++ b/src/lib.rs
+@@ -1,4 +1,5 @@
+ pub mod custom_rules;
++#[cfg(feature = "daemon")]
+ pub mod daemon;
+ pub mod issues;
+ pub mod metadatas;
+-- 
+2.42.0
+