adding version-script

d5a56f09 · John Jarvis · de7795b0 · d5a56f09
Commit d5a56f09 authored May 16, 2013 by John Jarvis
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version-script/version.py
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--- a/version-script/version.py
+++ b/version-script/version.py
+#!/usr/bin/env python
+import os
+import subprocess
+import re
+import json
+import glob
+
+ROOT_DIR = '/opt/wwc'
+VERSION_FILE = '/opt/wwc/versions.html'
+VERSION_JSON = '/opt/wwc/versions.json'
+GLOB_DIRS = [
+              os.path.join(ROOT_DIR, '*/.git'),
+              os.path.join(ROOT_DIR, '*/*/.git'),
+              os.path.join(ROOT_DIR, 'data/*/.git'),
+            ]
+
+
+TEMPLATE = """
+<html>
+<head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    <title></title>
+    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
+
+    <style>
+      body {{
+         font-size: 2em;
+         color: #000;
+         font-family: monospace;
+      }}
+    </style>
+
+  </head>
+<body>
+<ul>
+  {BODY}
+</ul>
+</body>
+<script type="text/javascript">
+  $(".collapse").click(function () {{
+        $(this).parent().children().toggle();
+        $(this).toggle();
+
+        }});
+  $(document).ready(function() {{
+        $('.collapse').parent().children().toggle();
+        $('.collapse').toggle();
+  }});
+</script>
+</html>
+"""
+
+
+def main():
+    assert os.path.isdir(ROOT_DIR)
+    # using glob with fixed depths is much
+    # faster than os.walk for finding all .git repos
+    git_dirs = [git_dir for glob_dir in GLOB_DIRS
+                for git_dir in glob.glob(glob_dir)]
+    git_dirs = filter(lambda f: os.path.isdir(f), git_dirs)
+
+    version_info = ""
+    versions = {}
+
+    for git_dir in git_dirs:
+        repo_dir = git_dir.replace('/.git', '')
+        repo_dir_basename = os.path.basename(repo_dir)
+
+        # get the revision of the repo
+        p = subprocess.Popen(['/usr/bin/git', 'rev-parse', 'HEAD'],
+                    stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+                    cwd=git_dir)
+        rev_output, rev_err = p.communicate()
+        revision = rev_output.splitlines()[0][:8]
+
+        # dictionary that will be written out as JSON
+        versions[repo_dir_basename] = revision
+
+        # use reflogs for the repo history
+        p = subprocess.Popen(
+          ['/usr/bin/git', 'log', '-g', '--abbrev-commit', '--pretty=oneline'],
+           stdout=subprocess.PIPE, stderr=subprocess.PIPE, cwd=git_dir)
+
+        reflog_output, reflog_err = p.communicate()
+
+        # ignore lines that do not have 'HEAD'
+        reflog_lines = filter(lambda x: x.find('HEAD') >= 0,
+                                            reflog_output.splitlines())
+
+        # get the repo name, `git remote -v` seems like the fastest option
+        p = subprocess.Popen(['/usr/bin/git', 'remote', '-v'],
+                    stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+                    cwd=git_dir)
+        remote_output, remote_err = p.communicate()
+        repo_url = None
+        for line in remote_output.splitlines():
+            if ' (fetch)' in line:
+                repo_url = re.search(
+                        'git@(.*) \(fetch\)', line).group(1).replace(
+                                                                ':', '/')
+                break
+        if not repo_url:
+            raise Exception("Unable to parse repo name")
+
+        version_info += """
+          <li> <span class="collapse"> <a href="http://{0}">{1}</a> - {2}
+                [ click for history (most recent last) ]</span>
+          <ul>""".format(repo_url, repo_dir_basename, revision)
+
+        ref_prev = None
+        for line in reflog_lines[:0:-1]:
+            ref = line.split()[0]
+            version_info += """
+              <li><span class="collapse">{ref} -
+              <a href="http://{repo}/compare/{ref}...{revision}">[diff current]</a>
+              """.format(ref=ref, repo=repo_url, revision=revision)
+
+            if ref_prev:
+                version_info += """
+                <a href="http://{repo}/compare/{ref_prev}...{ref}">[diff previous]</a>
+                """.format(repo=repo_url, ref=ref, ref_prev=ref_prev)
+            version_info += "</span></li>"
+            ref_prev = ref
+        version_info += """
+          </ul></li>"""
+
+    with open(VERSION_FILE, 'w') as f:
+        f.write(TEMPLATE.format(BODY=version_info))
+    with open(VERSION_JSON, 'w') as f:
+        f.write(json.dumps(versions, sort_keys=True, indent=4,
+                        separators=(',', ': ')))
+
+if __name__ == '__main__':
+    main()