loopflow 0.12.8

Run steps and flows with coding 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
141
142
143
144
145

use std::os::unix::process::CommandExt;
use std::process::Command;

use anyhow::{anyhow, Context};

use crate::durable::{AgentInvocationId, BoundaryState, InvocationSurface};
use crate::engine::wave_home::HomeRoute;
use crate::lf::InvocationCommand;
use crate::store::{open_store, storage_config_from_env, Store};

pub fn run(command: &InvocationCommand) -> anyhow::Result<()> {
    let runtime = tokio::runtime::Runtime::new()?;
    runtime.block_on(run_async(command))
}

async fn run_async(command: &InvocationCommand) -> anyhow::Result<()> {
    let store = open_shared_store().await?;
    match command {
        InvocationCommand::List { active, json } => {
            let surfaces = store.invocation_surfaces(*active).await?;
            if *json {
                println!("{}", serde_json::to_string_pretty(&surfaces)?);
            } else if surfaces.is_empty() {
                println!("No AgentInvocations.");
            } else {
                for surface in surfaces {
                    print_surface(&surface, false)?;
                }
            }
        }
        InvocationCommand::Status {
            invocation_id,
            json,
        }
        | InvocationCommand::Attach {
            invocation_id,
            json,
        } => {
            let surface = load_surface(&store, invocation_id).await?;
            print_surface(&surface, *json)?;
        }
        InvocationCommand::Handback {
            invocation_id,
            outcome,
            json,
        } => {
            let invocation_id = parse_invocation_id(invocation_id)?;
            let outcome = parse_outcome(outcome)?;
            let surface = store.handback_invocation(&invocation_id, outcome).await?;
            print_surface(&surface, *json)?;
        }
        InvocationCommand::Present { invocation_id } => {
            let surface = load_surface(&store, invocation_id).await?;
            present(&surface)?;
        }
    }
    Ok(())
}

async fn open_shared_store() -> anyhow::Result<Store> {
    let config = storage_config_from_env().context("resolve the shared Loopflow store")?;
    open_store(&config)
        .await
        .context("open the shared Loopflow store")
}

async fn load_surface(store: &Store, invocation_id: &str) -> anyhow::Result<InvocationSurface> {
    let invocation_id = parse_invocation_id(invocation_id)?;
    store
        .invocation_surface(&invocation_id)
        .await?
        .ok_or_else(|| anyhow!("AgentInvocation {invocation_id} not found"))
}

fn parse_invocation_id(value: &str) -> anyhow::Result<AgentInvocationId> {
    AgentInvocationId::parse(value).map_err(Into::into)
}

fn parse_outcome(value: &str) -> anyhow::Result<BoundaryState> {
    match value {
        "succeeded" => Ok(BoundaryState::Succeeded),
        "failed" => Ok(BoundaryState::Failed),
        "interrupted" => Ok(BoundaryState::Interrupted),
        "unknown" => Ok(BoundaryState::Unknown),
        value => Err(anyhow!(
            "invalid AgentInvocation handback outcome {value:?}"
        )),
    }
}

fn print_surface(surface: &InvocationSurface, json: bool) -> anyhow::Result<()> {
    if json {
        println!("{}", serde_json::to_string_pretty(surface)?);
    } else {
        println!(
            "{}  {:?}\n  work: {}:{}\n  provider: {}\n  home: {}\n  cwd: {}",
            surface.invocation.id,
            surface.run.state,
            surface.work.kind(),
            surface.work.id(),
            surface.invocation.route.provider,
            surface.home_route,
            surface
                .run
                .cwd
                .as_ref()
                .map_or_else(|| "-".to_string(), |cwd| cwd.display().to_string()),
        );
    }
    Ok(())
}

fn present(surface: &InvocationSurface) -> anyhow::Result<()> {
    let argv = surface
        .attach_argv
        .as_ref()
        .ok_or_else(|| anyhow!("Invocation {} has no attach route", surface.invocation.id))?;
    let (program, args) = argv.split_first().ok_or_else(|| {
        anyhow!(
            "Invocation {} has an empty attach route",
            surface.invocation.id
        )
    })?;
    let home = HomeRoute::parse(&surface.home_route)
        .ok_or_else(|| anyhow!("invalid Home route {:?}", surface.home_route))?;
    let mut command = if let Some(destination) = home.ssh_destination() {
        let mut command = Command::new("ssh");
        if let Some(port) = home.ssh_port() {
            command.args(["-p", &port.to_string()]);
        }
        command.arg(destination).arg("--").arg(program).args(args);
        command
    } else {
        let mut command = Command::new(program);
        command.args(args);
        if let Some(cwd) = &surface.run.cwd {
            command.current_dir(cwd);
        }
        command
    };
    let error = command.exec();
    Err(anyhow!(
        "failed to exec AgentInvocation attach route: {error}"
    ))
}