devrig 0.30.1

Local development orchestrator
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

use axum::extract::State;
use axum::http::StatusCode;
use axum::response::IntoResponse;
use axum::Json;
use serde::{Deserialize, Serialize};
use sha2::{Digest, Sha256};

use super::DashboardState;

#[derive(Serialize)]
pub struct ConfigResponse {
    pub content: String,
    pub hash: String,
}

#[derive(Deserialize)]
pub struct ConfigUpdateRequest {
    pub content: String,
    pub hash: String,
}

#[derive(Serialize)]
pub struct ConfigErrorResponse {
    pub error: String,
}

fn compute_hash(content: &str) -> String {
    let mut hasher = Sha256::new();
    hasher.update(content.as_bytes());
    format!("{:x}", hasher.finalize())
}

pub async fn get_config(State(state): State<DashboardState>) -> impl IntoResponse {
    let config_path = match &state.config_path {
        Some(p) => p.clone(),
        None => {
            return (
                StatusCode::NOT_FOUND,
                Json(ConfigErrorResponse {
                    error: "config path not available".to_string(),
                }),
            )
                .into_response();
        }
    };

    match tokio::fs::read_to_string(&config_path).await {
        Ok(content) => {
            let hash = compute_hash(&content);
            Json(ConfigResponse { content, hash }).into_response()
        }
        Err(e) => (
            StatusCode::INTERNAL_SERVER_ERROR,
            Json(ConfigErrorResponse {
                error: format!("failed to read config: {}", e),
            }),
        )
            .into_response(),
    }
}

#[derive(Deserialize)]
pub struct ConfigValidateRequest {
    pub content: String,
}

#[derive(Serialize)]
pub struct ConfigValidateResponse {
    pub valid: bool,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub error: Option<String>,
}

pub async fn validate_config(Json(req): Json<ConfigValidateRequest>) -> impl IntoResponse {
    match req.content.parse::<toml::Table>() {
        Ok(_) => Json(ConfigValidateResponse {
            valid: true,
            error: None,
        })
        .into_response(),
        Err(e) => Json(ConfigValidateResponse {
            valid: false,
            error: Some(format!("{}", e)),
        })
        .into_response(),
    }
}

pub async fn update_config(
    State(state): State<DashboardState>,
    Json(req): Json<ConfigUpdateRequest>,
) -> impl IntoResponse {
    let config_path = match &state.config_path {
        Some(p) => p.clone(),
        None => {
            return (
                StatusCode::NOT_FOUND,
                Json(ConfigErrorResponse {
                    error: "config path not available".to_string(),
                }),
            )
                .into_response();
        }
    };

    // Validate TOML syntax
    if let Err(e) = req.content.parse::<toml::Table>() {
        return (
            StatusCode::BAD_REQUEST,
            Json(ConfigErrorResponse {
                error: format!("invalid TOML: {}", e),
            }),
        )
            .into_response();
    }

    // Check optimistic concurrency: read current content and compare hash
    let current_content = match tokio::fs::read_to_string(&config_path).await {
        Ok(c) => c,
        Err(e) => {
            return (
                StatusCode::INTERNAL_SERVER_ERROR,
                Json(ConfigErrorResponse {
                    error: format!("failed to read current config: {}", e),
                }),
            )
                .into_response();
        }
    };

    let current_hash = compute_hash(&current_content);
    if req.hash != current_hash {
        return (
            StatusCode::CONFLICT,
            Json(ConfigErrorResponse {
                error: "config has been modified externally; please reload".to_string(),
            }),
        )
            .into_response();
    }

    // Write the new content
    match tokio::fs::write(&config_path, req.content.as_bytes()).await {
        Ok(()) => {
            let new_hash = compute_hash(&req.content);
            Json(ConfigResponse {
                content: req.content,
                hash: new_hash,
            })
            .into_response()
        }
        Err(e) => (
            StatusCode::INTERNAL_SERVER_ERROR,
            Json(ConfigErrorResponse {
                error: format!("failed to write config: {}", e),
            }),
        )
            .into_response(),
    }
}