orchestral-runtime 0.3.1

A runtime for reliable, interactive AI agents.
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

//! Compact, atomic receipts for the Artifact page output contract.

use super::*;

pub(super) fn artifact_page_observation(group: &SessionCompactionGroup) -> Option<String> {
    // A receipt for a successful page must not displace an error from the
    // same atomic exchange. Keep the general outcome renderer in that case.
    if group
        .messages
        .iter()
        .flat_map(|message| &message.content)
        .any(|content| matches!(content, ModelContent::ToolResult { is_error: true, .. }))
    {
        return None;
    }
    let mut receipts = Vec::new();
    for message in &group.messages {
        for content in &message.content {
            let ModelContent::ToolResult {
                call_id,
                result,
                is_error: false,
            } = content
            else {
                continue;
            };
            let artifact_ref = result.get("artifact_ref")?.as_str()?;
            let offset = result.get("offset")?.as_u64()?;
            let next = result.get("next_offset")?.as_u64()?;
            let size = result.get("total_bytes")?.as_u64()?;
            let complete = result.get("complete")?.as_bool()?;
            let bytes = result.get("bytes_read")?.as_u64()?;
            let text = result.get("content")?.as_str()?;
            if artifact_ref.is_empty()
                || next > size
                || next.checked_sub(offset) != Some(bytes)
                || bytes != text.len() as u64
                || complete != (next == size)
                || (!complete && bytes == 0)
            {
                return None;
            }
            let name = group
                .messages
                .iter()
                .flat_map(|message| &message.content)
                .find_map(|content| match content {
                    ModelContent::ToolCall {
                        call_id: candidate,
                        name,
                        ..
                    } if candidate == call_id => Some(name),
                    _ => None,
                })?;
            let continuation = serde_json::json!({"artifact_ref":artifact_ref,"next_offset":next,"complete":complete});
            receipts.push(format!(
                "session_seq={}..{} {name} status=succeeded {}",
                group.source.first_session_seq,
                group.source.last_session_seq,
                canonical_summary_json(&continuation).ok()?,
            ));
        }
    }
    (!receipts.is_empty()).then(|| receipts.join("\n"))
}

#[cfg(test)]
mod tests {
    use super::*;
    use orchestral_core::model_protocol::ModelToolCallId;

    fn page_group() -> SessionCompactionGroup {
        let call_id = ModelToolCallId::new("page");
        SessionCompactionGroup {
            source: single_range(3),
            messages: vec![
                ModelMessage {
                    role: ModelRole::Assistant,
                    content: vec![ModelContent::ToolCall {
                        call_id: call_id.clone(),
                        name: "custom_page_tool".to_owned(),
                        arguments: serde_json::json!({}),
                        extensions: Default::default(),
                    }],
                },
                ModelMessage {
                    role: ModelRole::Tool,
                    content: vec![ModelContent::ToolResult {
                        call_id,
                        result: serde_json::json!({
                            "artifact_ref":"opaque-reference", "offset":0,
                            "next_offset":6,"total_bytes":64,"complete":false,
                            "bytes_read":6,"content":"你好",
                        }),
                        is_error: false,
                    }],
                },
            ],
        }
    }

    #[test]
    fn continuation_requires_a_matching_successful_call_and_consistent_utf8_page() {
        assert!(artifact_page_observation(&page_group()).is_some());
        for corruption in [
            "offset",
            "next_offset",
            "complete",
            "bytes_read",
            "call",
            "error",
        ] {
            let mut group = page_group();
            let ModelContent::ToolResult {
                call_id,
                result,
                is_error,
            } = &mut group.messages[1].content[0]
            else {
                unreachable!();
            };
            match corruption {
                "offset" => result["offset"] = serde_json::json!(7),
                "next_offset" => result["next_offset"] = serde_json::json!(65),
                "complete" => result["complete"] = serde_json::json!(true),
                "bytes_read" => result["bytes_read"] = serde_json::json!(2),
                "call" => *call_id = ModelToolCallId::new("unrelated"),
                _ => *is_error = true,
            }
            assert!(artifact_page_observation(&group).is_none(), "{corruption}");
        }
        let mut mixed = page_group();
        mixed.messages[1].content.push(ModelContent::ToolResult {
            call_id: ModelToolCallId::new("failed-check"),
            result: serde_json::json!({"reason":"check failed"}),
            is_error: true,
        });
        assert!(artifact_page_observation(&mixed).is_none());
    }
}