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+# 概述
+
+* 统一规范v3「流水线定义」DSL语法。
+
+# 问题描述
+
+* 结合已提出了一些rfc以及简化v3流水线dsl，整理新版DSL语法。
+
+# 约束条件
+
+无
+
+# 解决方案
+
+* 以下为新版「流水线定义」DSL语法。
+
+```yaml
+# 建木v3流水线版本为3
+version: 3
+
+name: xxxxxx
+description: xxxxxx
+
+triggers:
+  # cron
+  - ref: cron1
+    name: cron-1
+    type: cron
+    schedule: 0 0 9 * * ?
+  # timer
+  - ref: timer1
+    name: timer-1
+    type: timer
+    start-at: 08:00:00
+    repeat: true
+    interval: 1d
+  # inner
+  - ref: inner1
+    name: inner-1
+    type: inner
+    params:
+      - ref: username
+        name: git路径
+        type: STRING
+        required: true
+    only: trigger.username === "张三"
+  # general webhook
+  - ref: webhook1
+    name: webhook-1
+    type: webhook
+    params:
+      - ref: gitee_ref
+        name: gitee_ref
+        type: STRING
+        expr: body.json.ref
+        required: true
+    auth:
+      token: trigger.gitee_token
+      expr: ((gitee.webhook_token))
+    only: trigger.gitee_event === "Tag Push Hook"
+  # custom webhook
+  - ref: webhook2
+    name: webhook-2
+    webhook: xxx@xxx
+    events:
+      - ref: push_event
+        name: Push事件
+        rules:
+          # 可选参数唯一标识
+          - param-ref: xxx
+            operator: include | exclude | equal | neq | reg_exp
+            expr: xxx
+        # 规则集运算符
+        rules-operator: and | or
+      - ref: pr_event
+        name: PR事件
+        rules:
+          - param-ref: xxx
+            operator: include | exclude | equal | neq | reg_exp
+            expr: xxx
+        rules-operator: and | or
+
+global:
+  # v3.x版本迭代，tag取值为表达式，
+  # 相关RFC：037-project-tag-for-matching-worker
+  tag: "worker1" + ext.xxx
+  # 定义缓存
+  # 相关RFC：034-workflow&pipeline-cache
+  caches:
+    # 缓存标识
+    - maven
+  # 是否并发，默认为true
+  concurrent: true
+  # 全局参数
+  params:
+    - ref: image_name
+      name: 镜像名称
+      type: STRING
+      expr: '"jianmudev/jianmu-ci-server"'
+    - ref: maven_public_url
+      name: maven私库地址
+      type: STRING
+      expr: ext.maven_public_url
+      required: true
+  # 后置处理
+  # 相关RFC：033-workflow&pipeline-post
+  posts:
+    - ref: trigger-inner
+      name: 内部触发
+      trigger: inner2
+      when: git_clone.git_branch === "master"
+      inputs:
+        - ref: git_path
+          expr: shell.size
+          # 默认值：false，表示不脱敏
+          hidden: true | false
+    - ref: feishu
+      name: 飞书通知
+      task: feishu_notice_interactive@1.0.4
+      inputs:
+        - ref: bot_webhook_url
+          expr: ((feishu.webhook_url))
+        - ref: msg_title
+          expr: '"建木Deno表达式引擎Docker镜像构建完成"'
+        - ref: msg_text
+          expr: `标签：${git_clone.git_tag}\n\n镜像：${global.image_name}:${git_clone.git_tag}`
+
+# 阶段编排
+stages:
+  - ref: stage_1
+    name: 阶段-1
+    # 是否串行，默认为true，表示串行，false表示并行
+    serial: true | false
+    # 节点编排
+    nodes:
+      - ref: git_clone
+        name: 克隆仓库
+        # 任务节点
+        task: git_clone@1.2.3
+        # 相关RFC：032-node-timeout
+        timeout: 10m 20s
+        # 失败策略
+        # 相关RFC：035-meticulous-on-failure
+        on-failure:
+          default: suspend
+          timeout: retry
+          max: 2
+        inputs:
+          - ref: remote_url
+            expr: '"https://gitee.com/jianmu-dev/jianmu-ci-server.git"'
+          - ref: ref
+            expr: trigger.gitee_ref
+      - ref: shell
+        name: 查看仓库目录
+        # 容器内置节点（shell节点）
+        image: alpine:3.13.6
+        envs:
+          - ref: GIT_PATH
+            expr: git_clone.git_path
+            # 默认值：false，表示不脱敏
+            hidden: true | false
+        scripts:
+          - cd $GIT_PATH
+          - export size=`du -sh | awk '{print $1}'`
+        exports:
+          - ref: size
+            name: 仓库大小
+            type: STRING
+            required: true
+  - ref: stage_2
+    name: 阶段-2
+    nodes:
+      - ref: approval
+        name: 审批
+        # 审批网管
+        # 相关RFC：029-approval-gateway
+        gateway: approval
+        inputs:
+          - ref: username
+            name: DockerHub用户名
+            type: STRING
+            default: jianmudev
+          - ref: password
+            name: DockerHub密码
+            type: SECRET
+            required: true
+      - ref: maven_jib_build
+        name: maven_jib构建镜像
+        task: maven_build@1.3.1-jdk11
+        caches:
+          # global段定义的缓存标识
+          - ref: maven
+            path: /.m2
+        inputs:
+          - ref: mvn_action
+            expr: '"install -Dmaven.test.skip=true"'
+          - ref: workspace
+            expr: git_clone.git_path
+          - ref: image_name
+            expr: global.image_name
+          - ref: image_tag
+            expr: git_clone.git_branch
+          - ref: maven_public_url
+            expr: global.maven_public_url
+          - ref: dockerhub_username
+            expr: approval.username
+          - ref: dockerhub_password
+            expr: approval.password
+  - ref: stage_3
+    name: 阶段-3
+    nodes:
+      - ref: send_message
+        task: feishu_notice_interactive@1.0.4
+        inputs:
+          - ref: bot_webhook_url
+            expr: ((feishu.webhook_url))
+          - ref: msg_title
+            expr: 建木Deno表达式引擎Docker镜像构建完成
+          - ref: msg_text
+            expr: `标签：${git_clone.git_tag}\n\n镜像：${global.image_name}:${git_clone.git_tag}`
+      - ref: trigger-inner2
+        name: 内部触发
+        # 触发器内置节点
+        # 相关RFC：030-trigger-node
+        trigger: inner3
+        when: git_clone.git_branch === "master"
+        inputs:
+          - ref: git_path
+            expr: shell.size
+```
+
+# 待讨论问题
+
+0. stage是否需要ref
+1. 任务节点输入参数表达式计算结果类型不为对应类型时，是否隐式转换
+2. shell节点环境变量表达式计算结果类型不为字符串时，是否隐式转换为字符串
+3. 对密钥参数，hidden起到什么作用，会有什么影响
+4. 怎么在下游节点中引用审批网关参数，目前没有明确支持动态密钥机制
+
+# 已解决问题
+
+0. stage需要ref
+1. 任务节点输入参数表达式计算结果类型不为对应类型时，直接报错，不隐式转换
+2. shell节点环境变量表达式计算结果类型不为字符串时，隐式转换为字符串
+3. 对密钥参数，hidden不起作用
+4. 审批网关不支持密钥类型
+
+# 后果
+
+无
+
+