mirror of https://github.com/rwf2/Rocket.git
Add 'Error::pretty_print()'.
This commit is contained in:
Sergio Benitez
parent
615e70fdad
commit
311a82e3d7
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@ -153,6 +153,89 @@ impl Error {
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self.mark_handled();
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&self.kind
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}
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/// Prints the error with color (if enabled) and detail. Returns a string
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/// that indicates the abort condition such as "aborting due to i/o error".
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///
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/// This function is called on `Drop` to display the error message. By
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/// contrast, the `Display` implementation prints a succinct version of the
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/// error, without detail.
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///
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/// ```rust
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/// # let _ = async {
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/// if let Err(error) = rocket::build().launch().await {
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/// let abort = error.pretty_print();
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/// panic!("{}", abort);
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/// }
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/// # };
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/// ```
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pub fn pretty_print(&self) -> &'static str {
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self.mark_handled();
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match self.kind() {
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ErrorKind::Bind(ref e) => {
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error!("Rocket failed to bind network socket to given address/port.");
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info_!("{}", e);
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"aborting due to socket bind error"
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}
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ErrorKind::Io(ref e) => {
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error!("Rocket failed to launch due to an I/O error.");
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info_!("{}", e);
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"aborting due to i/o error"
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}
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ErrorKind::Collisions(ref collisions) => {
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fn log_collisions<T: fmt::Display>(kind: &str, collisions: &[(T, T)]) {
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if collisions.is_empty() { return }
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error!("Rocket failed to launch due to the following {} collisions:", kind);
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for &(ref a, ref b) in collisions {
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info_!("{} {} {}", a, Paint::red("collides with").italic(), b)
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}
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}
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log_collisions("route", &collisions.routes);
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log_collisions("catcher", &collisions.catchers);
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info_!("Note: Route collisions can usually be resolved by ranking routes.");
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"aborting due to detected routing collisions"
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}
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ErrorKind::FailedFairings(ref failures) => {
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error!("Rocket failed to launch due to failing fairings:");
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for fairing in failures {
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info_!("{}", fairing.name);
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}
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"aborting due to fairing failure(s)"
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}
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ErrorKind::InsecureSecretKey(profile) => {
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error!("secrets enabled in non-debug without `secret_key`");
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info_!("selected profile: {}", Paint::default(profile).bold());
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info_!("disable `secrets` feature or configure a `secret_key`");
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"aborting due to insecure configuration"
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}
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ErrorKind::Config(error) => {
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crate::config::pretty_print_error(error.clone());
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"aborting due to invalid configuration"
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}
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ErrorKind::SentinelAborts(ref failures) => {
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error!("Rocket failed to launch due to aborting sentinels:");
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for sentry in failures {
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let name = Paint::default(sentry.type_name).bold();
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let (file, line, col) = sentry.location;
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info_!("{} ({}:{}:{})", name, file, line, col);
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}
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"aborting due to sentinel-triggered abort(s)"
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}
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ErrorKind::Shutdown(_, error) => {
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error!("Rocket failed to shutdown gracefully.");
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if let Some(e) = error {
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info_!("{}", e);
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}
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"aborting due to failed shutdown"
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}
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}
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}
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}
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impl std::error::Error for Error { }
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@ -197,70 +280,7 @@ impl Drop for Error {
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return
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}
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match self.kind() {
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ErrorKind::Bind(ref e) => {
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error!("Rocket failed to bind network socket to given address/port.");
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info_!("{}", e);
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panic!("aborting due to socket bind error");
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}
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ErrorKind::Io(ref e) => {
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error!("Rocket failed to launch due to an I/O error.");
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info_!("{}", e);
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panic!("aborting due to i/o error");
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}
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ErrorKind::Collisions(ref collisions) => {
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fn log_collisions<T: fmt::Display>(kind: &str, collisions: &[(T, T)]) {
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if collisions.is_empty() { return }
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error!("Rocket failed to launch due to the following {} collisions:", kind);
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for &(ref a, ref b) in collisions {
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info_!("{} {} {}", a, Paint::red("collides with").italic(), b)
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}
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}
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log_collisions("route", &collisions.routes);
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log_collisions("catcher", &collisions.catchers);
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info_!("Note: Route collisions can usually be resolved by ranking routes.");
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panic!("routing collisions detected");
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}
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ErrorKind::FailedFairings(ref failures) => {
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error!("Rocket failed to launch due to failing fairings:");
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for fairing in failures {
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info_!("{}", fairing.name);
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}
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panic!("aborting due to fairing failure(s)");
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}
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ErrorKind::InsecureSecretKey(profile) => {
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error!("secrets enabled in non-debug without `secret_key`");
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info_!("selected profile: {}", Paint::default(profile).bold());
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info_!("disable `secrets` feature or configure a `secret_key`");
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panic!("aborting due to insecure configuration")
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}
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ErrorKind::Config(error) => {
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crate::config::pretty_print_error(error.clone());
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panic!("aborting due to invalid configuration")
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}
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ErrorKind::SentinelAborts(ref failures) => {
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error!("Rocket failed to launch due to aborting sentinels:");
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for sentry in failures {
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let name = Paint::default(sentry.type_name).bold();
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let (file, line, col) = sentry.location;
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info_!("{} ({}:{}:{})", name, file, line, col);
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}
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panic!("aborting due to sentinel-triggered abort(s)");
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}
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ErrorKind::Shutdown(_, error) => {
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error!("Rocket failed to shutdown gracefully.");
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if let Some(e) = error {
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info_!("{}", e);
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}
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panic!("aborting due to failed shutdown");
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}
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}
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panic!("{}", self.pretty_print());
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}
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}
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