Files
Unlucky-Launcher/crates/cli/src/commands/install/vanilla.rs
T
AskaEth a5d1dec495
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release: v0.2.4 里程碑快照(孤儿提交,无父;树 = dev 68362e5)
本批内容见 CHANGELOG.md 的 0.2.4 段。按 D41 用孤儿快照推 main,保留「公开史只有里程碑」的模型。
2026-11-11 21:41:38 +08:00

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//! `ull install <version>`(无加载器):M27 原版安装流程的宿主。
//!
//! ```text
//! RemoteSource::resolve(版本清单缓存 → 版本 JSON → 继承链)
//! → RemoteSource::asset_index(资源索引,顺便拿字节给下面预取)
//! → InstallPlan::build(纯计算:文件清单 / 总大小 / 角色)
//! → [--dry-run 到此为止]
//! → execute(跳过已就绪 → 引擎并发下载 → 原子写版本 JSON)
//! → register(profiles.json + config/instances/<id>.json)
//! ```
//!
//! 异步整段包在一次 `block_on` 里:CLI 不依赖 tokio(D18 依赖树纪律),
//! reqwest 的连接池也不会跨运行时而失效。
use unlucky_core::download::blocking::block_on;
use unlucky_core::download::cache::now_ms;
use unlucky_core::download::DownloadEngine;
use unlucky_core::game::arguments::Environment;
use unlucky_core::game::install::{
execute, InstallError, InstallErrorKind, InstallPlan, InstallReport, PlanInput, RemoteSource,
};
use super::{
build_engine, ensure_name_free, failure_error, map_install_error, progress, report, CONCURRENCY,
};
use crate::cli::InstallArgs;
use crate::context::Ctx;
use crate::error::CliError;
use crate::output::Report;
/// 执行 `install`(原版)。
///
/// # Errors
///
/// 用法错误、版本不存在、网络失败、校验不符、写盘失败、实例清单损坏。
pub(super) fn run(ctx: &Ctx, args: &InstallArgs) -> Result<Report, CliError> {
let version = args.version.trim().to_string();
if version.is_empty() {
return Err(CliError::usage(
"install 需要版本 id:%prog% install <version>",
));
}
let name = args
.name
.clone()
.filter(|name| !name.trim().is_empty())
.unwrap_or_else(|| version.clone());
ensure_name_free(ctx, &name, &version)?;
let engine = build_engine(ctx);
let now = now_ms();
let (plan, report) = plan_and_install(
ctx,
&engine,
&version,
args.dry_run,
args.progress,
args.json_progress,
)?;
if let Some(report) = &report {
if !report.is_complete() {
return Err(failure_error(report, ctx));
}
}
let registration = if args.dry_run {
None
} else {
Some(super::register_instance(ctx, &name, &version)?)
};
Ok(report::build(
ctx,
&engine,
now,
args.dry_run,
&plan,
report.as_ref(),
registration.as_ref(),
&name,
&version,
))
}
/// 规划 + 执行原版安装(`--dry-run` 只规划),供加载器安装当"前置步骤"复用。
///
/// # Errors
///
/// 版本不存在、网络失败、清单装不全、写盘失败。
pub(super) fn plan_and_install(
ctx: &Ctx,
engine: &DownloadEngine,
version: &str,
dry_run: bool,
progress: bool,
json_progress: bool,
) -> Result<(InstallPlan, Option<InstallReport>), CliError> {
let game = ctx.game();
let meta_cache = ctx.layout().meta_cache();
let now = now_ms();
block_on(async {
let source = RemoteSource::new(engine, &game, &meta_cache, now);
let resolved = source.resolve(version).await?;
let fetched = match resolved
.asset_index
.as_ref()
.filter(|index| index.url.is_some())
{
Some(reference) => {
let (index, bytes) = source.asset_index(reference).await?;
Some((index, game.asset_index(&reference.id), bytes))
}
None => None,
};
let mut plan = InstallPlan::build(PlanInput {
layout: &game,
version_id: version,
resolved: &resolved,
asset_index: fetched.as_ref().map(|(index, _, _)| index),
environment: &Environment::host(),
})?;
if let Some((_, dest, bytes)) = fetched {
plan.prefetch(dest, bytes);
}
if dry_run {
return Ok::<Attempt, InstallError>(Attempt { plan, report: None });
}
// 计划里没有客户端 jar(旧版清单缺 downloads.client)→ 拒绝"装出个空壳"。
if !plan.is_installable() {
let reasons = if plan.warnings.is_empty() {
"清单缺少客户端 jar 的下载信息".to_string()
} else {
plan.warnings.join(";")
};
return Err(InstallError::new(
InstallErrorKind::Metadata,
format!("版本 {version} 装不全:{reasons}"),
)
.with_hint(
"旧版(pre-1.6)清单兜底待补;可先用官方启动器装好该版本再用 `%prog% launch`",
));
}
let sink = progress::progress_sink(progress, json_progress, plan.file_count());
let report = execute(engine, &plan, CONCURRENCY, sink).await?;
Ok(Attempt {
plan,
report: Some(report),
})
})
.map(|attempt| (attempt.plan, attempt.report))
.map_err(|error: InstallError| map_install_error(&error, ctx))
}
/// 一次安装尝试的产物(`--dry-run` 只有计划)。
struct Attempt {
plan: InstallPlan,
report: Option<InstallReport>,
}