socketry-cargo-bake 0.17.1

Cargo launcher for project-local Bake tasks
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154

// Released under the MIT License.
// Copyright, 2026, by Samuel Williams.

use crate::{Result, cargo, options::Options};
use serde::Deserialize;
use serde_json::Value;
use std::path::{Path, PathBuf};
use std::process::Stdio;

#[derive(Deserialize)]
struct Metadata {
    workspace_root: PathBuf,
    metadata: Value,
    packages: Vec<Package>,
}

#[derive(Deserialize)]
struct Package {
    name: String,
    manifest_path: PathBuf,
    metadata: Value,
    default_run: Option<String>,
    targets: Vec<Target>,
}

#[derive(Deserialize)]
struct Target {
    name: String,
    kind: Vec<String>,
}

pub(crate) struct Project {
    pub(crate) root: PathBuf,
    pub(crate) task_manifest: PathBuf,
    pub(crate) package: String,
    pub(crate) binary: String,
}

fn metadata(manifest: &Path, options: &Options) -> Result<Metadata> {
    let mut command = cargo();
    command
        .args([
            "metadata",
            "--format-version",
            "1",
            "--no-deps",
            "--manifest-path",
        ])
        .arg(manifest)
        .current_dir(
            manifest
                .parent()
                .ok_or("manifest has no parent directory")?,
        )
        .stderr(Stdio::inherit());
    options.configure(&mut command);
    let output = command.output()?;
    if !output.status.success() {
        return Err(format!(
            "cargo metadata failed for {} ({})",
            manifest.display(),
            output.status
        )
        .into());
    }
    Ok(serde_json::from_slice(&output.stdout)?)
}

fn configured_manifest(metadata: &Value) -> Result<Option<&str>> {
    match metadata.get("bake").and_then(|value| value.get("manifest")) {
        None => Ok(None),
        Some(Value::String(path)) if !path.is_empty() => Ok(Some(path)),
        _ => Err("metadata.bake.manifest must be a nonempty path string".into()),
    }
}

impl Project {
    pub(crate) fn discover(directory: &Path, options: &Options) -> Result<Self> {
        let manifest = match &options.manifest {
            Some(path) => directory.join(path),
            None => directory
                .ancestors()
                .map(|parent| parent.join("Cargo.toml"))
                .find(|candidate| candidate.is_file())
                .ok_or("no Cargo.toml found; run inside a Cargo project or use --manifest-path")?,
        }
        .canonicalize()?;
        let project_metadata = metadata(&manifest, options)?;
        let package = project_metadata.packages.iter().find(|package| {
            package
                .manifest_path
                .canonicalize()
                .is_ok_and(|path| path == manifest)
        });
        let package_manifest = package
            .map(|package| configured_manifest(&package.metadata))
            .transpose()?
            .flatten();
        let (root, relative_manifest) = if let Some(path) = package_manifest {
            (
                manifest
                    .parent()
                    .ok_or("manifest has no parent directory")?
                    .to_path_buf(),
                path,
            )
        } else {
            (
                project_metadata.workspace_root.clone(),
                configured_manifest(&project_metadata.metadata)?.unwrap_or("bake/Cargo.toml"),
            )
        };
        let root = root.canonicalize()?;
        let task_manifest = root.join(relative_manifest).canonicalize().map_err(|error| {
            format!("cannot open task manifest {}: {error}; create an unpublished bake/ binary crate and add it to the workspace", root.join(relative_manifest).display())
        })?;
        let task_metadata = metadata(&task_manifest, options)?;
        let package = task_metadata
            .packages
            .into_iter()
            .find(|package| {
                package
                    .manifest_path
                    .canonicalize()
                    .is_ok_and(|path| path == task_manifest)
            })
            .ok_or("task manifest must identify a package, not a virtual workspace")?;
        let binaries: Vec<_> = package
            .targets
            .iter()
            .filter(|target| target.kind.iter().any(|kind| kind == "bin"))
            .collect();
        let binary = if let Some(default_run) = &package.default_run {
            binaries
                .iter()
                .find(|target| &target.name == default_run)
                .ok_or("task package default-run must name a binary target")?
                .name
                .clone()
        } else if let [binary] = binaries.as_slice() {
            binary.name.clone()
        } else {
            return Err(
                "task package must have one binary, or select one with package.default-run".into(),
            );
        };
        Ok(Self {
            root,
            task_manifest,
            package: package.name,
            binary,
        })
    }
}