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|
use crate::{derivation::Derivation, write::DOT_FILE_EXT, DerivationError};
use tvix_store::store_path::StorePath;
impl Derivation {
/// validate ensures a Derivation struct is properly populated,
/// and returns a [ValidateDerivationError] if not.
pub fn validate(&self) -> Result<(), DerivationError> {
// Ensure the number of outputs is > 1
if self.outputs.is_empty() {
return Err(DerivationError::NoOutputs());
}
// Validate all outputs
for (output_name, output) in &self.outputs {
// empty output names are invalid.
//
// `drv` is an invalid output name too, as this would cause
// a `builtins.derivation` call to return an attrset with a
// `drvPath` key (which already exists) and has a different
// meaning.
//
// Other output names that don't match the name restrictions from
// [StorePath] will fail output path calculation.
if output_name.is_empty() || output_name == "drv" {
return Err(DerivationError::InvalidOutputName(output_name.to_string()));
}
if output.is_fixed() {
if self.outputs.len() != 1 {
return Err(DerivationError::MoreThanOneOutputButFixed());
}
if output_name != "out" {
return Err(DerivationError::InvalidOutputNameForFixed(
output_name.to_string(),
));
}
break;
}
if let Err(e) = output.validate() {
return Err(DerivationError::InvalidOutputPath(
output_name.to_string(),
e,
));
};
}
// Validate all input_derivations
for (input_derivation_path, output_names) in &self.input_derivations {
// Validate input_derivation_path
if let Err(e) = StorePath::from_absolute_path(input_derivation_path) {
return Err(DerivationError::InvalidInputDerivationPath(
input_derivation_path.to_string(),
e,
));
}
if !input_derivation_path.ends_with(DOT_FILE_EXT) {
return Err(DerivationError::InvalidInputDerivationPrefix(
input_derivation_path.to_string(),
));
}
if output_names.is_empty() {
return Err(DerivationError::EmptyInputDerivationOutputNames(
input_derivation_path.to_string(),
));
}
for output_name in output_names.iter() {
// empty output names are invalid.
//
// `drv` is an invalid output name too, as this would cause
// a `builtins.derivation` call to return an attrset with a
// `drvPath` key (which already exists) and has a different
// meaning.
//
// Other output names that don't match the name restrictions
// from [StorePath] can't be constructed with this library, but
// are not explicitly checked here (yet).
if output_name.is_empty() || output_name == "drv" {
return Err(DerivationError::InvalidInputDerivationOutputName(
input_derivation_path.to_string(),
output_name.to_string(),
));
}
}
}
// Validate all input_sources
for input_source in self.input_sources.iter() {
if let Err(e) = StorePath::from_absolute_path(input_source) {
return Err(DerivationError::InvalidInputSourcesPath(
input_source.to_string(),
e,
));
}
}
// validate platform
if self.system.is_empty() {
return Err(DerivationError::InvalidPlatform(self.system.to_string()));
}
// validate builder
if self.builder.is_empty() {
return Err(DerivationError::InvalidBuilder(self.builder.to_string()));
}
// validate env, none of the keys may be empty.
// We skip the `name` validation seen in go-nix.
for k in self.environment.keys() {
if k.is_empty() {
return Err(DerivationError::InvalidEnvironmentKey(k.to_string()));
}
}
Ok(())
}
}
|
