harn_cli/
lib.rs

1#![recursion_limit = "256"]
2
3pub mod acp;
4mod bootstrap;
5pub mod cli;
6mod cli_bytecode;
7pub mod commands;
8mod compiler_context;
9#[doc(hidden)]
10pub mod dispatch;
11mod entrypoint;
12pub mod env_guard;
13mod eval_cli;
14mod exit;
15pub mod format;
16pub mod json_envelope;
17mod net;
18pub mod package;
19mod provider_bootstrap;
20mod provider_info;
21mod run_records;
22mod runtime;
23pub mod skill_loader;
24pub mod skill_provenance;
25mod source_exec;
26pub mod test_report;
27pub mod test_runner;
28pub mod test_timing;
29#[doc(hidden)]
30pub mod tests;
31mod typecheck_imports;
32pub use commands::dispatch_explain::DISPATCH_AUDIT_SCHEMA_VERSION;
33pub(crate) use compiler_context::{
34    compiler_for_source, compiler_with_imported_enum_candidates,
35    ensure_builtin_signatures_installed, imported_enum_candidates_for_source,
36};
37pub use harn_skills::{get_embedded_skill, list_embedded_skills, EmbeddedSkill, SkillFrontmatter};
38// Items that used to live directly in this file. A bare item at the crate
39// root is visible crate-wide, so re-exporting the modules' `pub(crate)` items
40// here keeps every existing `crate::<item>` path resolving unchanged.
41pub(crate) use self::entrypoint::*;
42pub(crate) use self::eval_cli::*;
43pub(crate) use self::exit::*;
44pub(crate) use self::provider_info::*;
45pub(crate) use self::run_records::*;
46pub(crate) use self::source_exec::*;
47
48use clap::{error::ErrorKind, CommandFactory, Parser as ClapParser};
49use std::path::{Path, PathBuf};
50use std::sync::{Arc, Once};
51use std::{env, fs, panic, process, thread};
52
53use cli::{
54    Cli, Command, CompletionShell, EvalCommand, GuardCommand, MergeCaptainCommand,
55    MergeCaptainMockCommand, ModelInfoArgs, PackageArtifactsCommand, PackageCacheCommand,
56    PackageCommand, PackageScaffoldCommand, PgCommand, ProviderCommand, SkillCommand,
57    SkillKeyCommand, SkillTrustCommand, TimeCommand, ToolCommand,
58};
59use harn_lexer::Lexer;
60use harn_modules::project_config;
61use harn_parser::{DiagnosticSeverity, Parser, TypeChecker};
62use runtime::{build_cli_runtime, cli_runtime_mode, CliRuntimeMode};
63pub const CLI_RUNTIME_STACK_SIZE: usize = 16 * 1024 * 1024;
64static BROKEN_PIPE_PANIC_HOOK: Once = Once::new();
65
66#[cfg(feature = "hostlib")]
67pub(crate) fn install_default_hostlib(vm: &mut harn_vm::Vm) {
68    let _ = harn_hostlib::install_default(vm);
69    // The `rules` capability lives in its own crate (it depends on
70    // `harn-rules`, which depends on `harn-hostlib`, so it can't ship inside
71    // `install_default`). Wire it in alongside the defaults.
72    harn_rules_hostlib::install(vm);
73}
74
75#[cfg(not(feature = "hostlib"))]
76pub(crate) fn install_default_hostlib(_vm: &mut harn_vm::Vm) {}
77
78/// Entry point used by `src/main.rs`. Hosts the CLI runtime thread and
79/// drives the async dispatcher in `async_main`.
80pub fn run() {
81    install_broken_pipe_panic_hook();
82    harn_vm::initialize_runtime_assets();
83    let raw_args = normalize_serve_args(bootstrap::args_after_pre_runtime_command());
84    // Defeat rlib dead-code stripping of `#[harn_builtin]`-emitted statics
85    // (linkme issue #36). Without this touch the linker can drop every
86    // builtin's distributed-slice entry, leaving `ALL_BUILTIN_DEFS` empty
87    // and surfacing as a swarm of `HARN-NAM-002` errors at first call.
88    harn_vm::stdlib::force_link();
89
90    ensure_builtin_signatures_installed();
91
92    let runtime_mode = cli_runtime_mode(&raw_args);
93
94    let handle = thread::Builder::new()
95        .name("harn-cli".to_string())
96        .stack_size(CLI_RUNTIME_STACK_SIZE)
97        .spawn(move || {
98            let runtime = build_cli_runtime(runtime_mode);
99            runtime.block_on(async_main(raw_args, runtime_mode));
100            // Drain any queued OTLP exports while the tokio runtime
101            // is still alive. The auto-registered `OtelSink` uses a
102            // batch processor with `runtime::Tokio`; if we let the
103            // runtime drop before this call, in-flight spans never
104            // reach the configured collector. No-op when OTel is not
105            // configured.
106            if let Err(error) = harn_vm::events::shutdown_otel_sink() {
107                eprintln!("[harn] OTel exporter shutdown failed: {error}");
108            }
109        })
110        .unwrap_or_else(|error| {
111            eprintln!("failed to start CLI runtime thread: {error}");
112            process::exit(1);
113        });
114
115    if let Err(payload) = handle.join() {
116        if runtime::is_broken_pipe_panic_payload(payload.as_ref()) {
117            process::exit(0);
118        }
119        std::panic::resume_unwind(payload);
120    }
121}
122
123fn install_broken_pipe_panic_hook() {
124    BROKEN_PIPE_PANIC_HOOK.call_once(|| {
125        let previous = panic::take_hook();
126        panic::set_hook(Box::new(move |info| {
127            if runtime::is_broken_pipe_panic_payload(info.payload()) {
128                return;
129            }
130            previous(info);
131        }));
132    });
133}
harn_cli/lib.rs

harn_cli/
lib.rs
