cherry-studio/docs/technical/app-upgrade-config-zh.md
beyondkmp 038d30831c
♻️ refactor: implement config-based update system with version compatibility control (#11147)
* ♻️ refactor: implement config-based update system with version compatibility control

Replace GitHub API-based update discovery with JSON config file system. Support
version gating (users below v1.7 must upgrade to v1.7.0 before v2.0). Auto-select
GitHub/GitCode config source based on IP location. Simplify fallback logic.

Changes:
- Add update-config.json with version compatibility rules
- Implement _fetchUpdateConfig() and _findCompatibleChannel()
- Remove legacy _getReleaseVersionFromGithub() and GitHub API dependency
- Refactor _setFeedUrl() with simplified fallback to default feed URLs
- Add design documentation in docs/UPDATE_CONFIG_DESIGN.md

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix(i18n): Auto update translations for PR #11147

* format code

* 🔧 chore: update config for v1.7.5 → v2.0.0 → v2.1.6 upgrade path

Update version configuration to support multi-step upgrade path:
- v1.6.x users → v1.7.5 (last v1.x release)
- v1.7.x users → v2.0.0 (v2.x intermediate version)
- v2.0.0+ users → v2.1.6 (current latest)

Changes:
- Update 1.7.0 → 1.7.5 with fixed feedUrl
- Set 2.0.0 as intermediate version with fixed feedUrl
- Add 2.1.6 as current latest pointing to releases/latest

This ensures users upgrade through required intermediate versions
before jumping to major releases.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* 🔧 chore: refactor update config with constants and adjust versions

Refactor update configuration system and adjust to actual versions:

- Add UpdateConfigUrl enum in constant.ts for centralized config URLs
- Point to test server (birdcat.top) for development testing
- Update AppUpdater.ts to use UpdateConfigUrl constants
- Adjust update-config.json to actual v1.6.7 with rc/beta channels
- Remove v2.1.6 entry (not yet released)
- Set package version to 1.6.5 for testing upgrade path
- Add update-config.example.json for reference

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* update version

*  test: add comprehensive unit tests for AppUpdater config system

Add extensive test coverage for new config-based update system including:
- Config fetching with IP-based source selection (GitHub/GitCode)
- Channel compatibility matching with version constraints
- Smart fallback from rc/beta to latest when appropriate
- Multi-step upgrade path validation (1.6.3 → 1.6.7 → 2.0.0)
- Error handling for network and HTTP failures

Test Coverage:
- _fetchUpdateConfig: 4 tests (GitHub/GitCode selection, error handling)
- _findCompatibleChannel: 9 tests (channel matching, version comparison)
- Upgrade Path: 3 tests (version gating scenarios)
- Total: 30 tests, 100% passing

Also optimize _findCompatibleChannel logic with better variable naming
and log messages.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

*  test: add complete multi-step upgrade path tests (1.6.3 → 1.7.5 → 2.0.0 → 2.1.6)

Add comprehensive test suite for complete upgrade journey including:
- Individual step validation (1.6.3→1.7.5, 1.7.5→2.0.0, 2.0.0→2.1.6)
- Full multi-step upgrade simulation with version progression
- Version gating enforcement (block skipping intermediate versions)
- Verification that 1.6.3 cannot directly upgrade to 2.0.0 or 2.1.6
- Verification that 1.7.5 cannot skip 2.0.0 to reach 2.1.6

Test Coverage:
- 6 new tests for complete upgrade path scenarios
- Total: 36 tests, 100% passing

This ensures the version compatibility system correctly enforces
intermediate version upgrades for major releases.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* 📝 docs: reorganize update config documentation with English translation

Move update configuration design document to docs/technical/ directory
and add English translation for international contributors.

Changes:
- Move docs/UPDATE_CONFIG_DESIGN.md → docs/technical/app-update-config-zh.md
- Add docs/technical/app-update-config-en.md (English translation)
- Organize technical documentation in dedicated directory

Documentation covers:
- Config-based update system design and rationale
- JSON schema with version compatibility control
- Multi-step upgrade path examples (1.6.3 → 1.7.5 → 2.0.0 → 2.1.6)
- TypeScript type definitions and matching algorithms
- GitHub/GitCode source selection for different regions

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* format code

*  test: add tests for latest channel self-comparison prevention

Add tests to verify the optimization that prevents comparing latest
channel with itself when latest is requested, and ensures rc/beta
channels are returned when they are newer than latest.

New tests:
- should not compare latest with itself when requesting latest channel
- should return rc when rc version > latest version
- should return beta when beta version > latest version

These tests ensure the requestedChannel !== UpgradeChannel.LATEST
check works correctly and users get the right channel based on
version comparisons.

Test Coverage: 39 tests, 100% passing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* update github/gitcode

* format code

* update rc version

* ♻️ refactor: merge update configs into single multi-mirror file

- Merge app-upgrade-config-github.json and app-upgrade-config-gitcode.json into single app-upgrade-config.json
- Add UpdateMirror enum for type-safe mirror selection
- Optimize _fetchUpdateConfig to receive mirror parameter, eliminating duplicate IP country checks
- Update ChannelConfig interface to use Record<UpdateMirror, string> for feedUrls
- Rename documentation files from app-update-config-* to app-upgrade-config-*
- Update docs with new multi-mirror configuration structure

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

*  test: update AppUpdater tests for multi-mirror configuration

- Add UpdateMirror enum import
- Update _fetchUpdateConfig tests to accept mirror parameter
- Convert all feedUrl to feedUrls structure in test mocks
- Update test expectations to match new ChannelConfig interface
- All 39 tests passing

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* format code

* delete files

* 📝 docs: add UpdateMirror enum to type definitions

- Add UpdateMirror enum definition in both EN and ZH docs
- Update ChannelConfig to use Record<UpdateMirror, string>
- Add comments showing equivalent structure for clarity

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* 🐛 fix: return actual channel from _findCompatibleChannel

Fix channel mismatch issue where requesting rc/beta but getting latest:
- Change _findCompatibleChannel return type to include actual channel
- Return { config, channel } instead of just config
- Update _setFeedUrl to use actualChannel instead of requestedChannel
- Update all test expectations to match new return structure
- Add channel assertions to key tests

This ensures autoUpdater.channel matches the actual feed URL being used.

Fixes issue where:
- User requests 'rc' channel
- latest >= rc, so latest config is returned
- But channel was set to 'rc' with latest URL 
- Now channel is correctly set to 'latest' 

All 39 tests passing 

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* update version

* udpate version

* update config

* add no cache header

* update files

* 🤖 chore: automate app upgrade config updates

* format code

* update workflow

* update get method

* docs: document upgrade workflow automation

---------

Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: GitHub Action <action@github.com>
2025-11-14 17:49:40 +08:00

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# 更新配置系统设计文档
## 背景
当前 AppUpdater 直接请求 GitHub API 获取 beta 和 rc 的更新信息。为了支持国内用户,需要根据 IP 地理位置,分别从 GitHub/GitCode 获取一个固定的 JSON 配置文件,该文件包含所有渠道的更新地址。
## 设计目标
1. 支持根据 IP 地理位置选择不同的配置源GitHub/GitCode
2. 支持版本兼容性控制(如 v1.x 以下必须先升级到 v1.7.0 才能升级到 v2.0
3. 易于扩展支持未来多个主版本的升级路径v1.6 → v1.7 → v2.0 → v2.8 → v3.0
4. 保持与现有 electron-updater 机制的兼容性
## 当前版本策略
- **v1.7.x** 是 1.x 系列的最后版本
- **v1.7.0 以下**的用户必须先升级到 v1.7.0(或更高的 1.7.x 版本)
- **v1.7.0 及以上**的用户可以直接升级到 v2.x.x
## 自动化工作流
`cs-releases/app-upgrade-config.json` 由 [`Update App Upgrade Config`](../../.github/workflows/update-app-upgrade-config.yml) workflow 自动同步。工作流会调用 [`scripts/update-app-upgrade-config.ts`](../../scripts/update-app-upgrade-config.ts) 脚本,根据指定 tag 更新 `cs-releases` 分支上的配置文件。
### 触发条件
- **Release 事件(`release: released/prereleased`**
- Draft release 会被忽略。
- 当 GitHub 将 release 标记为 *prerelease*tag 必须包含 `-beta`/`-rc`(可带序号),否则直接跳过。
- 当 release 标记为稳定版时tag 必须与 GitHub API 返回的最新稳定版本一致,防止发布历史 tag 时意外挂起工作流。
- 满足上述条件后,工作流会根据语义化版本判断渠道(`latest`/`beta`/`rc`),并通过 `IS_PRERELEASE` 传递给脚本。
- **手动触发(`workflow_dispatch`**
- 必填:`tag`(例:`v2.0.1`);选填:`is_prerelease`(默认 `false`)。
-`is_prerelease=true` 时,同样要求 tag 带有 beta/rc 后缀。
- 手动运行仍会请求 GitHub 最新 release 信息,用于在 PR 说明中标注该 tag 是否是最新稳定版。
### 工作流步骤
1. **检查与元数据准备**`Check if should proceed` 和 `Prepare metadata` 步骤会计算 tag、prerelease 标志、是否最新版本以及用于分支名的 `safe_tag`。若任意校验失败,工作流立即退出。
2. **检出分支**:默认分支被检出到 `main/`,长期维护的 `cs-releases` 分支则在 `cs/` 中,所有改动都发生在 `cs/`
3. **安装工具链**:安装 Node.js 22、启用 Corepack并在 `main/` 目录执行 `yarn install --immutable`
4. **运行更新脚本**:执行 `yarn tsx scripts/update-app-upgrade-config.ts --tag <tag> --config ../cs/app-upgrade-config.json --is-prerelease <flag>`
- 脚本会标准化 tag去掉 `v` 前缀等)、识别渠道、加载 `config/app-upgrade-segments.json` 中的分段规则。
- 校验 prerelease 标志与语义后缀是否匹配、强制锁定的 segment 是否满足、生成镜像的下载地址,并检查 release 是否已经在 GitHub/GitCode 可用latest 渠道在 GitCode 不可用时会回退到 `https://releases.cherry-ai.com`)。
- 更新对应的渠道配置后,脚本会按 semver 排序写回 JSON并刷新 `lastUpdated`
5. **检测变更并创建 PR**:若 `cs/app-upgrade-config.json` 有变更,则创建 `chore/update-app-upgrade-config/<safe_tag>` 分支,提交信息为 `🤖 chore: sync app-upgrade-config for <tag>`,并向 `cs-releases` 提 PR无变更则输出提示。
### 手动触发指南
1. 进入 Cherry Studio 仓库的 GitHub **Actions** 页面,选择 **Update App Upgrade Config** 工作流。
2. 点击 **Run workflow**,保持默认分支(通常为 `main`),填写 `tag`(如 `v2.1.0`)。
3. 只有在 tag 带 `-beta`/`-rc` 后缀时才勾选 `is_prerelease`,稳定版保持默认。
4. 启动运行并等待完成,随后到 `cs-releases` 分支的 PR 查看 `app-upgrade-config.json` 的变更并在验证后合并。
## JSON 配置文件格式
### 文件位置
- **GitHub**: `https://raw.githubusercontent.com/CherryHQ/cherry-studio/refs/heads/cs-releases/app-upgrade-config.json`
- **GitCode**: `https://gitcode.com/CherryHQ/cherry-studio/raw/cs-releases/app-upgrade-config.json`
**说明**:两个镜像源提供相同的配置文件,统一托管在 `cs-releases` 分支上。客户端根据 IP 地理位置自动选择最优镜像源。
### 配置结构(当前实际配置)
```json
{
"lastUpdated": "2025-01-05T00:00:00Z",
"versions": {
"1.6.7": {
"minCompatibleVersion": "1.0.0",
"description": "Last stable v1.7.x release - required intermediate version for users below v1.7",
"channels": {
"latest": {
"version": "1.6.7",
"feedUrls": {
"github": "https://github.com/CherryHQ/cherry-studio/releases/download/v1.6.7",
"gitcode": "https://gitcode.com/CherryHQ/cherry-studio/releases/download/v1.6.7"
}
},
"rc": {
"version": "1.6.0-rc.5",
"feedUrls": {
"github": "https://github.com/CherryHQ/cherry-studio/releases/download/v1.6.0-rc.5",
"gitcode": "https://github.com/CherryHQ/cherry-studio/releases/download/v1.6.0-rc.5"
}
},
"beta": {
"version": "1.6.7-beta.3",
"feedUrls": {
"github": "https://github.com/CherryHQ/cherry-studio/releases/download/v1.7.0-beta.3",
"gitcode": "https://github.com/CherryHQ/cherry-studio/releases/download/v1.7.0-beta.3"
}
}
}
},
"2.0.0": {
"minCompatibleVersion": "1.7.0",
"description": "Major release v2.0 - required intermediate version for v2.x upgrades",
"channels": {
"latest": null,
"rc": null,
"beta": null
}
}
}
}
```
### 未来扩展示例
当需要发布 v3.0 时,如果需要强制用户先升级到 v2.8,可以添加:
```json
{
"2.8.0": {
"minCompatibleVersion": "2.0.0",
"description": "Stable v2.8 - required for v3 upgrade",
"channels": {
"latest": {
"version": "2.8.0",
"feedUrls": {
"github": "https://github.com/CherryHQ/cherry-studio/releases/download/v2.8.0",
"gitcode": "https://gitcode.com/CherryHQ/cherry-studio/releases/download/v2.8.0"
}
},
"rc": null,
"beta": null
}
},
"3.0.0": {
"minCompatibleVersion": "2.8.0",
"description": "Major release v3.0",
"channels": {
"latest": {
"version": "3.0.0",
"feedUrls": {
"github": "https://github.com/CherryHQ/cherry-studio/releases/latest",
"gitcode": "https://gitcode.com/CherryHQ/cherry-studio/releases/latest"
}
},
"rc": {
"version": "3.0.0-rc.1",
"feedUrls": {
"github": "https://github.com/CherryHQ/cherry-studio/releases/download/v3.0.0-rc.1",
"gitcode": "https://gitcode.com/CherryHQ/cherry-studio/releases/download/v3.0.0-rc.1"
}
},
"beta": null
}
}
}
```
### 字段说明
- `lastUpdated`: 配置文件最后更新时间ISO 8601 格式)
- `versions`: 版本配置对象key 为版本号,按语义化版本排序
- `minCompatibleVersion`: 可以升级到此版本的最低兼容版本
- `description`: 版本描述
- `channels`: 更新渠道配置
- `latest`: 稳定版渠道
- `rc`: Release Candidate 渠道
- `beta`: Beta 测试渠道
- 每个渠道包含:
- `version`: 该渠道的版本号
- `feedUrls`: 多镜像源 URL 配置
- `github`: GitHub 镜像源的 electron-updater feed URL
- `gitcode`: GitCode 镜像源的 electron-updater feed URL
- `metadata`: 自动化匹配所需的稳定标识
- `segmentId`: 来自 `config/app-upgrade-segments.json` 的段位 ID
- `segmentType`: 可选字段(`legacy` | `breaking` | `latest`),便于文档/调试
## TypeScript 类型定义
```typescript
// 镜像源枚举
enum UpdateMirror {
GITHUB = 'github',
GITCODE = 'gitcode'
}
interface UpdateConfig {
lastUpdated: string
versions: {
[versionKey: string]: VersionConfig
}
}
interface VersionConfig {
minCompatibleVersion: string
description: string
channels: {
latest: ChannelConfig | null
rc: ChannelConfig | null
beta: ChannelConfig | null
}
metadata?: {
segmentId: string
segmentType?: 'legacy' | 'breaking' | 'latest'
}
}
interface ChannelConfig {
version: string
feedUrls: Record<UpdateMirror, string>
// 等同于:
// feedUrls: {
// github: string
// gitcode: string
// }
}
```
## 段位元数据Break Change 标记)
- 所有段位定义(如 `legacy-v1`、`gateway-v2` 等)集中在 `config/app-upgrade-segments.json`,用于描述匹配范围、`segmentId`、`segmentType`、默认 `minCompatibleVersion/description` 以及各渠道的 URL 模板。
- `versions` 下的每个节点都会带上 `metadata.segmentId`。自动脚本始终依据该 ID 来定位并更新条目,即便 key 从 `2.1.5` 切换到 `2.1.6` 也不会错位。
- 如果某段需要锁死在特定版本(例如 `2.0.0` 的 break change可在段定义中设置 `segmentType: "breaking"` 并提供 `lockedVersion`,脚本在遇到不匹配的 tag 时会短路报错,保证升级路径安全。
- 面对未来新的断层(例如 `3.0.0`),只需要在段定义里新增一段,自动化即可识别并更新。
## 自动化工作流
`.github/workflows/update-app-upgrade-config.yml` 会在 GitHub Release包含正常发布与 Pre Release触发
1. 同时 Checkout 仓库默认分支(用于脚本)和 `cs-releases` 分支(真实托管配置的分支)。
2. 在默认分支目录执行 `yarn tsx scripts/update-app-upgrade-config.ts --tag <tag> --config ../cs/app-upgrade-config.json`,直接重写 `cs-releases` 分支里的配置文件。
3. 如果 `app-upgrade-config.json` 有变化,则通过 `peter-evans/create-pull-request` 自动创建一个指向 `cs-releases` 的 PRDiff 仅包含该文件。
如需本地调试,可执行 `yarn update:upgrade-config --tag v2.1.6 --config ../cs/app-upgrade-config.json`(加 `--dry-run` 仅打印结果)来复现 CI 行为。若需要暂时跳过 GitHub/GitCode Release 页面是否就绪的校验,可在 `--dry-run` 的同时附加 `--skip-release-checks`。不加 `--config` 时默认更新当前工作目录(通常是 main 分支)下的副本,方便文档/审查。
## 版本匹配逻辑
### 算法流程
1. 获取用户当前版本(`currentVersion`)和请求的渠道(`requestedChannel`
2. 获取配置文件中所有版本号,按语义化版本从大到小排序
3. 遍历排序后的版本列表:
- 检查 `currentVersion >= minCompatibleVersion`
- 检查请求的 `channel` 是否存在且不为 `null`
- 如果满足条件,返回该渠道配置
4. 如果没有找到匹配版本,返回 `null`
### 伪代码实现
```typescript
function findCompatibleVersion(
currentVersion: string,
requestedChannel: UpgradeChannel,
config: UpdateConfig
): ChannelConfig | null {
// 获取所有版本号并从大到小排序
const versions = Object.keys(config.versions).sort(semver.rcompare)
for (const versionKey of versions) {
const versionConfig = config.versions[versionKey]
const channelConfig = versionConfig.channels[requestedChannel]
// 检查版本兼容性和渠道可用性
if (
semver.gte(currentVersion, versionConfig.minCompatibleVersion) &&
channelConfig !== null
) {
return channelConfig
}
}
return null // 没有找到兼容版本
}
```
## 升级路径示例
### 场景 1: v1.6.5 用户升级(低于 1.7
- **当前版本**: 1.6.5
- **请求渠道**: latest
- **匹配结果**: 1.7.0
- **原因**: 1.6.5 >= 0.0.0(满足 1.7.0 的 minCompatibleVersion但不满足 2.0.0 的 minCompatibleVersion (1.7.0)
- **操作**: 提示用户升级到 1.7.0,这是升级到 v2.x 的必要中间版本
### 场景 2: v1.6.5 用户请求 rc/beta
- **当前版本**: 1.6.5
- **请求渠道**: rc 或 beta
- **匹配结果**: 1.7.0 (latest)
- **原因**: 1.7.0 版本不提供 rc/beta 渠道(值为 null
- **操作**: 升级到 1.7.0 稳定版
### 场景 3: v1.7.0 用户升级到最新版
- **当前版本**: 1.7.0
- **请求渠道**: latest
- **匹配结果**: 2.0.0
- **原因**: 1.7.0 >= 1.7.0(满足 2.0.0 的 minCompatibleVersion
- **操作**: 直接升级到 2.0.0(当前最新稳定版)
### 场景 4: v1.7.2 用户升级到 RC 版本
- **当前版本**: 1.7.2
- **请求渠道**: rc
- **匹配结果**: 2.0.0-rc.1
- **原因**: 1.7.2 >= 1.7.0(满足 2.0.0 的 minCompatibleVersion且 rc 渠道存在
- **操作**: 升级到 2.0.0-rc.1
### 场景 5: v1.7.0 用户升级到 Beta 版本
- **当前版本**: 1.7.0
- **请求渠道**: beta
- **匹配结果**: 2.0.0-beta.1
- **原因**: 1.7.0 >= 1.7.0,且 beta 渠道存在
- **操作**: 升级到 2.0.0-beta.1
### 场景 6: v2.5.0 用户升级(未来)
假设已添加 v2.8.0 和 v3.0.0 配置:
- **当前版本**: 2.5.0
- **请求渠道**: latest
- **匹配结果**: 2.8.0
- **原因**: 2.5.0 >= 2.0.0(满足 2.8.0 的 minCompatibleVersion但不满足 3.0.0 的要求
- **操作**: 提示用户升级到 2.8.0,这是升级到 v3.x 的必要中间版本
## 代码改动计划
### 主要修改
1. **新增方法**
- `_fetchUpdateConfig(ipCountry: string): Promise<UpdateConfig | null>` - 根据 IP 获取配置文件
- `_findCompatibleChannel(currentVersion: string, channel: UpgradeChannel, config: UpdateConfig): ChannelConfig | null` - 查找兼容的渠道配置
2. **修改方法**
- `_getReleaseVersionFromGithub()` → 移除或重构为 `_getChannelFeedUrl()`
- `_setFeedUrl()` - 使用新的配置系统替代现有逻辑
3. **新增类型定义**
- `UpdateConfig`
- `VersionConfig`
- `ChannelConfig`
### 镜像源选择逻辑
客户端根据 IP 地理位置自动选择最优镜像源:
```typescript
private async _setFeedUrl() {
const currentVersion = app.getVersion()
const testPlan = configManager.getTestPlan()
const requestedChannel = testPlan ? this._getTestChannel() : UpgradeChannel.LATEST
// 根据 IP 国家确定镜像源
const ipCountry = await getIpCountry()
const mirror = ipCountry.toLowerCase() === 'cn' ? 'gitcode' : 'github'
// 获取更新配置
const config = await this._fetchUpdateConfig(mirror)
if (config) {
const channelConfig = this._findCompatibleChannel(currentVersion, requestedChannel, config)
if (channelConfig) {
// 从配置中选择对应镜像源的 URL
const feedUrl = channelConfig.feedUrls[mirror]
this._setChannel(requestedChannel, feedUrl)
return
}
}
// Fallback 逻辑
const defaultFeedUrl = mirror === 'gitcode'
? FeedUrl.PRODUCTION
: FeedUrl.GITHUB_LATEST
this._setChannel(UpgradeChannel.LATEST, defaultFeedUrl)
}
private async _fetchUpdateConfig(mirror: 'github' | 'gitcode'): Promise<UpdateConfig | null> {
const configUrl = mirror === 'gitcode'
? UpdateConfigUrl.GITCODE
: UpdateConfigUrl.GITHUB
try {
const response = await net.fetch(configUrl, {
headers: {
'User-Agent': generateUserAgent(),
'Accept': 'application/json',
'X-Client-Id': configManager.getClientId()
}
})
return await response.json() as UpdateConfig
} catch (error) {
logger.error('Failed to fetch update config:', error)
return null
}
}
```
## 降级和容错策略
1. **配置文件获取失败**: 记录错误日志,返回当前版本,不提供更新
2. **没有匹配的版本**: 提示用户当前版本不支持自动升级
3. **网络异常**: 缓存上次成功获取的配置(可选)
## GitHub Release 要求
为支持中间版本升级,需要保留以下文件:
- **v1.7.0 release** 及其 latest*.yml 文件(作为 v1.7 以下用户的升级目标)
- 未来如需强制中间版本(如 v2.8.0),需要保留对应的 release 和 latest*.yml 文件
- 各版本的完整安装包
### 当前需要的 Release
| 版本 | 用途 | 必须保留 |
|------|------|---------|
| v1.7.0 | 1.7 以下用户的升级目标 | ✅ 是 |
| v2.0.0-rc.1 | RC 测试渠道 | ❌ 可选 |
| v2.0.0-beta.1 | Beta 测试渠道 | ❌ 可选 |
| latest | 最新稳定版(自动) | ✅ 是 |
## 优势
1. **灵活性**: 支持任意复杂的升级路径
2. **可扩展性**: 新增版本只需在配置文件中添加新条目
3. **可维护性**: 配置与代码分离,无需发版即可调整升级策略
4. **多源支持**: 自动根据地理位置选择最优配置源
5. **版本控制**: 强制中间版本升级,确保数据迁移和兼容性
## 未来扩展
- 支持更细粒度的版本范围控制(如 `>=1.5.0 <1.8.0`
- 支持多步升级路径提示(如提示用户需要 1.5 → 1.8 → 2.0
- 支持 A/B 测试和灰度发布
- 支持配置文件的本地缓存和过期策略