仅在从git存储库中提取更改时运行构建任务

Question

我在Bitbucket git存储库中托管了一个C++程序,我正在使用CMake进行编译.目前的比赛可以在下面看到.它工作正常,除了build每次运行游戏时都运行-task.相反,我想 - build只有在git -module 提取新软件版本时才能运行.build如果clone--task找到新版本,我怎么能告诉-task ？

---
# tasks of role: foo

- name: clone repository
  git: repo=git@bitbucket.org:foo/foo.git
       dest={{ foo.dir }}
       accept_hostkey=yes

- name: create build dir
  file: state=directory path={{ foo.build_dir }}

- name: build
  command: "{{ item }} chdir={{ foo.build_dir }}"
  with_items:
    - cmake ..
    - make

Answer 1

您可以在clone任务输出中注册变量,并在build任务状态clone更改时调用任务

例如:

---
# tasks of role: foo

- name: clone repository
  git: repo=git@bitbucket.org:foo/foo.git
       dest={{ foo.dir }}
       accept_hostkey=yes
  register: gitclone

- name: create build dir
  file: state=directory path={{ foo.build_dir }}

- name: build
  command: "{{ item }} chdir={{ foo.build_dir }}"
  with_items:
    - cmake ..
    - make
  when: gitclone.changed