clerie/nixos-exporter
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Add kernel changed metric

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clerie 2023-03-25 16:18:36 +01:00
parent f3ea6ee9d5
commit 7e019abec4
4 changed files with 17 additions and 11 deletions
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2
Cargo.lock generated
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@ -450,7 +450,7 @@ dependencies = [
[[package]] [[package]]
name = "nixos-exporter" name = "nixos-exporter"
version = "0.4.0" version = "0.5.0"
dependencies = [ dependencies = [
"axum", "axum",
"reqwest", "reqwest",

2
Cargo.toml
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@ -1,6 +1,6 @@
[package] [package]
name = "nixos-exporter" name = "nixos-exporter"
version = "0.4.0" version = "0.5.0"
edition = "2021" edition = "2021"
[dependencies] [dependencies]

2
flake.nix
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@ -10,7 +10,7 @@
in { in {
nixos-exporter = pkgs.rustPlatform.buildRustPackage rec { nixos-exporter = pkgs.rustPlatform.buildRustPackage rec {
pname = "nixos-exporter"; pname = "nixos-exporter";
version = "0.4.0"; version = "0.5.0";
src = ./.; src = ./.;

22
src/main.rs
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@ -174,14 +174,14 @@ async fn main() {
async fn metrics() -> Result<(StatusCode, impl IntoResponse), (StatusCode, impl IntoResponse)> { async fn metrics() -> Result<(StatusCode, impl IntoResponse), (StatusCode, impl IntoResponse)> {
let nix_store_paths = HashMap::from([ let nix_store_paths = HashMap::from([
("current_system", NixStorePath::from_str_symlink("/run/current-system") ("current_system", NixStorePath::from_str_symlink("/run/current-system")
.map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?), .map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?),
("current_system_kernel", NixStorePath::from_str_symlink("/run/current-system/kernel") ("current_system_kernel", NixStorePath::from_str_symlink("/run/current-system/kernel")
.map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?), .map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?),
("booted_system", NixStorePath::from_str_symlink("/run/booted-system") ("booted_system", NixStorePath::from_str_symlink("/run/booted-system")
.map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?), .map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?),
("booted_system_kernel", NixStorePath::from_str_symlink("/run/booted-system/kernel") ("booted_system_kernel", NixStorePath::from_str_symlink("/run/booted-system/kernel")
.map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?), .map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?),
]); ]);
let mut out = String::new(); let mut out = String::new();
@ -190,6 +190,12 @@ async fn metrics() -> Result<(StatusCode, impl IntoResponse), (StatusCode, impl
.map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?.as_str()); .map_err(|err| (StatusCode::INTERNAL_SERVER_ERROR, err))?.as_str());
} }
out.push_str(format!("nixos_current_system_kernel_is_booted_system_kernel{{}} {}", (
nix_store_paths.get("current_system_kernel").ok_or_else(|| (StatusCode::INTERNAL_SERVER_ERROR, String::from("")))?.hash
== nix_store_paths.get("booted_system_kernel").ok_or_else(|| (StatusCode::INTERNAL_SERVER_ERROR, String::from("")))?.hash
) as i32).as_str()
);
return Ok(( return Ok((
StatusCode::OK, StatusCode::OK,
out, out,