apexe 0.1.0

Outside-In CLI-to-Agent Bridge
Documentation 
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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172

use std::path::PathBuf;

use crate::models::ScannedCLITool;

/// Filesystem cache for scan results.
pub struct ScanCache {
    cache_dir: PathBuf,
}

impl ScanCache {
    pub fn new(cache_dir: PathBuf) -> Self {
        Self { cache_dir }
    }

    /// Retrieve cached scan result. Returns None on cache miss or corruption.
    pub fn get(&self, tool_name: &str, tool_version: Option<&str>) -> Option<ScannedCLITool> {
        let key = format!(
            "{}_{}.scan.json",
            tool_name,
            tool_version.unwrap_or("unknown")
        );
        let path = self.cache_dir.join(&key);

        let contents = std::fs::read_to_string(&path).ok()?;
        serde_json::from_str(&contents).ok()
    }

    /// Store scan result in cache.
    pub fn put(&self, tool: &ScannedCLITool) -> anyhow::Result<()> {
        std::fs::create_dir_all(&self.cache_dir)?;
        let key = format!(
            "{}_{}.scan.json",
            tool.name,
            tool.version.as_deref().unwrap_or("unknown")
        );
        let path = self.cache_dir.join(&key);
        let json = serde_json::to_string_pretty(tool)?;
        std::fs::write(&path, json)?;
        Ok(())
    }

    /// Remove all cached results for a given tool name.
    pub fn invalidate(&self, tool_name: &str) {
        if let Ok(entries) = std::fs::read_dir(&self.cache_dir) {
            for entry in entries.flatten() {
                let name = entry.file_name();
                let name_str = name.to_string_lossy();
                if name_str.starts_with(&format!("{tool_name}_"))
                    && name_str.ends_with(".scan.json")
                {
                    let _ = std::fs::remove_file(entry.path());
                }
            }
        }
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::models::StructuredOutputInfo;
    use tempfile::TempDir;

    fn make_tool(name: &str, version: Option<&str>) -> ScannedCLITool {
        ScannedCLITool {
            name: name.into(),
            binary_path: format!("/usr/bin/{name}"),
            version: version.map(|v| v.to_string()),
            subcommands: vec![],
            global_flags: vec![],
            structured_output: StructuredOutputInfo::default(),
            scan_tier: 1,
            warnings: vec![],
        }
    }

    // T33: store and retrieve
    #[test]
    fn test_cache_put_and_get() {
        let tmp = TempDir::new().unwrap();
        let cache = ScanCache::new(tmp.path().to_path_buf());

        let tool = make_tool("git", Some("2.43.0"));
        cache.put(&tool).unwrap();

        let cached = cache.get("git", Some("2.43.0"));
        assert!(cached.is_some());
        let cached = cached.unwrap();
        assert_eq!(cached.name, "git");
        assert_eq!(cached.version, Some("2.43.0".into()));
    }

    #[test]
    fn test_cache_miss_wrong_version() {
        let tmp = TempDir::new().unwrap();
        let cache = ScanCache::new(tmp.path().to_path_buf());

        let tool = make_tool("git", Some("2.43.0"));
        cache.put(&tool).unwrap();

        let cached = cache.get("git", Some("2.44.0"));
        assert!(cached.is_none());
    }

    #[test]
    fn test_cache_miss_empty() {
        let tmp = TempDir::new().unwrap();
        let cache = ScanCache::new(tmp.path().to_path_buf());

        let cached = cache.get("git", Some("2.43.0"));
        assert!(cached.is_none());
    }

    #[test]
    fn test_cache_unknown_version() {
        let tmp = TempDir::new().unwrap();
        let cache = ScanCache::new(tmp.path().to_path_buf());

        let tool = make_tool("mytool", None);
        cache.put(&tool).unwrap();

        let cached = cache.get("mytool", None);
        assert!(cached.is_some());
    }

    // T34: invalidation
    #[test]
    fn test_cache_invalidate() {
        let tmp = TempDir::new().unwrap();
        let cache = ScanCache::new(tmp.path().to_path_buf());

        let tool1 = make_tool("git", Some("2.43.0"));
        let tool2 = make_tool("git", Some("2.44.0"));
        cache.put(&tool1).unwrap();
        cache.put(&tool2).unwrap();

        // Both should be cached
        assert!(cache.get("git", Some("2.43.0")).is_some());
        assert!(cache.get("git", Some("2.44.0")).is_some());

        // Invalidate
        cache.invalidate("git");

        // Both should be gone
        assert!(cache.get("git", Some("2.43.0")).is_none());
        assert!(cache.get("git", Some("2.44.0")).is_none());
    }

    #[test]
    fn test_cache_invalidate_empty_no_error() {
        let tmp = TempDir::new().unwrap();
        let cache = ScanCache::new(tmp.path().to_path_buf());
        // Should not panic or error
        cache.invalidate("nonexistent");
    }

    #[test]
    fn test_cache_invalidate_preserves_other_tools() {
        let tmp = TempDir::new().unwrap();
        let cache = ScanCache::new(tmp.path().to_path_buf());

        let git = make_tool("git", Some("2.43.0"));
        let docker = make_tool("docker", Some("24.0.0"));
        cache.put(&git).unwrap();
        cache.put(&docker).unwrap();

        cache.invalidate("git");

        assert!(cache.get("git", Some("2.43.0")).is_none());
        assert!(cache.get("docker", Some("24.0.0")).is_some());
    }
}