Enum libcnb_data::buildpack::BuildpackDescriptor

pub enum BuildpackDescriptor<BM> {
    Single(SingleBuildpackDescriptor<BM>),
    Meta(MetaBuildpackDescriptor<BM>),
}

Data structures for the Buildpack descriptor (buildpack.toml).

For parsing of buildpack.toml files when support for multiple types of buildpack is required.

When a specific buildpack type is expected, use SingleBuildpackDescriptor or MetaBuildpackDescriptor directly instead, since it allows for more detailed error messages if parsing fails.

Example:

use libcnb_data::buildpack::BuildpackDescriptor;

let toml_str = r#"
api = "0.8"

[buildpack]
id = "foo/bar"
name = "Bar Buildpack"
version = "0.0.1"
homepage = "https://www.foo.com/bar"
clear-env = false
description = "A buildpack for Foo Bar"
keywords = ["foo"]

[[buildpack.licenses]]
type = "BSD-3-Clause"

[[stacks]]
id = "*"
"#;

let buildpack_descriptor = toml::from_str::<BuildpackDescriptor<Option<toml::value::Table>>>(toml_str).expect("buildpack.toml did not match a known type!");
match buildpack_descriptor {
    BuildpackDescriptor::Single(buildpack) => println!("Found buildpack: {}", buildpack.buildpack.id),
    BuildpackDescriptor::Meta(buildpack) => println!("Found meta-buildpack: {}", buildpack.buildpack.id),
};

Variants

Single(SingleBuildpackDescriptor<BM>)

Meta(MetaBuildpackDescriptor<BM>)

Trait Implementations

impl<BM: Debug> Debug for BuildpackDescriptor<BM>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de, BM> Deserialize<'de> for BuildpackDescriptor<BM>where
BM: Deserialize<'de>,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.