iwec 0.7.0

IWE MCP server
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 std::net::TcpListener;
use std::process::{Child, Command, Stdio};
use std::time::Duration;

use rmcp::model::{
    CallToolRequestParams, ClientCapabilities, ClientInfo, Implementation, RawContent,
};
use rmcp::transport::StreamableHttpClientTransport;
use rmcp::ServiceExt;

struct ServerProcess {
    child: Child,
}

impl Drop for ServerProcess {
    fn drop(&mut self) {
        let _ = self.child.kill();
        let _ = self.child.wait();
    }
}

fn free_port() -> u16 {
    TcpListener::bind("127.0.0.1:0")
        .expect("bind ephemeral port")
        .local_addr()
        .expect("local addr")
        .port()
}

async fn wait_until_listening(addr: &str) {
    for _ in 0..100 {
        if tokio::net::TcpStream::connect(addr).await.is_ok() {
            return;
        }
        tokio::time::sleep(Duration::from_millis(50)).await;
    }
    panic!("server did not start listening on {addr}");
}

async fn find_welcome_over_http(addr: &str) -> serde_json::Value {
    wait_until_listening(addr).await;

    let transport = StreamableHttpClientTransport::from_uri(format!("http://{addr}/mcp"));
    let client_info = ClientInfo::new(
        ClientCapabilities::default(),
        Implementation::new("iwec-test-client", "0.0.1"),
    );
    let client = client_info
        .serve(transport)
        .await
        .expect("client to connect");

    let result = client
        .call_tool(
            CallToolRequestParams::new("iwe_find").with_arguments(
                serde_json::json!({ "query": "welcome" })
                    .as_object()
                    .cloned()
                    .unwrap(),
            ),
        )
        .await
        .expect("tool call to succeed");

    let text = result
        .content
        .iter()
        .filter_map(|c| match &c.raw {
            RawContent::Text(t) => Some(t.text.clone()),
            _ => None,
        })
        .collect::<String>();
    let json: serde_json::Value = serde_json::from_str(&text).expect("result to be valid JSON");

    client.cancel().await.expect("client to disconnect");

    json
}

#[tokio::test]
async fn http_transport_serves_the_graph() {
    let dir = tempfile::tempdir().expect("temp dir");
    std::fs::write(
        dir.path().join("welcome.md"),
        "# Welcome\n\nFirst document.\n",
    )
    .expect("write document");

    let port = free_port();
    let _server = ServerProcess {
        child: Command::new(env!("CARGO_BIN_EXE_iwec"))
            .arg("--transport")
            .arg("http")
            .arg("--port")
            .arg(port.to_string())
            .current_dir(dir.path())
            .stdout(Stdio::null())
            .stderr(Stdio::null())
            .spawn()
            .expect("spawn iwec"),
    };

    let json = find_welcome_over_http(&format!("127.0.0.1:{port}")).await;

    assert_eq!(
        json,
        serde_json::json!([
            {
                "key": "welcome",
                "title": "Welcome",
                "references": [],
                "includes": [],
                "referencedBy": [],
                "includedBy": []
            }
        ])
    );
}

#[tokio::test]
async fn http_transport_binds_to_the_host_flag() {
    let dir = tempfile::tempdir().expect("temp dir");
    std::fs::write(
        dir.path().join("welcome.md"),
        "# Welcome\n\nFirst document.\n",
    )
    .expect("write document");

    let port = free_port();
    let _server = ServerProcess {
        child: Command::new(env!("CARGO_BIN_EXE_iwec"))
            .arg("--transport")
            .arg("http")
            .arg("--host")
            .arg("127.0.0.1")
            .arg("--port")
            .arg(port.to_string())
            .current_dir(dir.path())
            .stdout(Stdio::null())
            .stderr(Stdio::null())
            .spawn()
            .expect("spawn iwec"),
    };

    let json = find_welcome_over_http(&format!("127.0.0.1:{port}")).await;

    assert_eq!(
        json,
        serde_json::json!([
            {
                "key": "welcome",
                "title": "Welcome",
                "references": [],
                "includes": [],
                "referencedBy": [],
                "includedBy": []
            }
        ])
    );
}