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# Clone the repo and check out the specified "commit" (defaults to master)
# unless it has already been checked out. Specifying "force" will clone and
# build regardless of prior status. When done, symlink the specified commit
# to make it go live, and remove old clones to free up disk space.
- name: check if specified commit has already been deployed
stat: path={{base_path}}/{{commit}} get_checksum=no get_md5=no
register: commit_dir
- include: checkout.yml
when: force or not commit_dir.stat.exists
- name: link sha-named clone to make it live
path: "{{site_path}}"
state: link
src: "{{base_path}}/{{ sha.stdout | default(commit) }}"
force: yes
- name: update last-modification time of sha-named clone
file: path={{base_path}}/{{ sha.stdout | default(commit) }} state=touch
- name: remove old clones to free up disk space
shell: |
# Find all 40-char-SHA-named child directories and for each directory, print
# out the last-modified timestamp and the SHA.
find . -mindepth 1 -maxdepth 1 -type d \
-regextype posix-extended -regex './[0-9a-f]{40}' -printf '%T@ %P\n' |
# Sort numerically in ascending order (on the timestamp), remove the
# timestamp from each line (leaving only the SHA), then remove the most
# recent SHAs from the list (leaving only the old SHAs-to-be-removed).
sort -n | cut -d ' ' -f 2 | head -n -{{keep_n_most_recent}} |
# Remove each remaining SHA-named directory and echo the SHA (so the task
# can display whether or not changes were made).
xargs -I % sh -c 'rm -rf "$1"; echo "$1"' -- %
register: remove_result
changed_when: remove_result.stdout != ""
chdir: "{{base_path}}"
when: keep_n_most_recent is defined