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linkerd2-proxy
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refactor(app/core): build.rs prints invalid proxy version (#3482) 

if this build script panics due to an invalid proxy version environment
variable, the panic can be somewhat cryptic. a message saying
`LINKERD2_PROXY_VERSION must be semver` is printed, but the proxy
version that caused this is not shown.

this commit adds the version and the error to this panic message.

now, building with an invalid proxy version provides us with the
following:

```
; LINKERD2_PROXY_VERSION='invalid' cargo build -p linkerd-app-core
   Compiling linkerd-app-core v0.1.0 (/linkerd2-proxy/linkerd/app/core)
error: failed to run custom build command for `linkerd-app-core v0.1.0 (/linkerd2-proxy/linkerd/app/core)`
note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.

Caused by:
  process didn't exit successfully: `/linkerd2-proxy/target/debug/build/linkerd-app-core-756fc82028bfbcc0/build-script-build` (exit status: 101)
  --- stdout
  cargo:rustc-env=GIT_SHA=e53b6b9d

  cargo:rustc-env=LINKERD2_PROXY_BUILD_DATE=2024-12-20T01:18:08Z

  --- stderr
  thread 'main' panicked at linkerd/app/core/build.rs:18:17:
  LINKERD2_PROXY_VERSION must be semver: version='invalid' error='unexpected character 'i' while parsing major version number'
```

Signed-off-by: katelyn martin <kate@buoyant.io>
This commit is contained in:
katelyn martin 2024-12-20 11:18:39 -05:00 committed by GitHub
parent a1a57139b1
commit 81b43e5633
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1 changed files with 2 additions and 2 deletions
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4
linkerd/app/core/build.rs
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@ -14,8 +14,8 @@ fn set_env(name: &str, cmd: &mut Command) {
fn version() -> String {
if let Ok(v) = std::env::var("LINKERD2_PROXY_VERSION") {
if !v.is_empty() {
if semver::Version::parse(&v).is_err() {
panic!("LINKERD2_PROXY_VERSION must be semver");
if let Err(err) = semver::Version::parse(&v) {
panic!("LINKERD2_PROXY_VERSION must be semver: version='{v}' error='{err}'");
}
return v;
}