dashboard: more aggressive caching for project/package pages

Plus automatic package<->project association script.
(This is just a helper script for now. I intend to fully automate
the associations further down the track.)

R=rsc
CC=golang-dev
https://golang.org/cl/1715054

misc/dashboard/godashboard/package.py

@@ -17,6 +17,7 @@ from google.appengine.ext.webapp import template
 from google.appengine.ext.webapp.util import run_wsgi_app
 from google.appengine.api import users
 from google.appengine.api import mail
+from google.appengine.api import urlfetch
 import binascii
 import datetime
 import hashlib
@@ -50,36 +51,91 @@ re_bitbucket = re.compile(r'^bitbucket\.org/[a-z0-9A-Z_.\-]+/[a-z0-9A-Z_.\-]+$')
 re_googlecode = re.compile(r'^[a-z0-9\-]+\.googlecode\.com/(svn|hg)$')
 re_github = re.compile(r'^github\.com/[a-z0-9A-Z_.\-]+/[a-z0-9A-Z_.\-]+$')
 
+def vc_to_web(path):
+    if re_bitbucket.match(path):
+        check_url = 'http://' + path + '/?cmd=heads'
+        web = 'http://' + path + '/'
+    elif re_github.match(path):
+        # github doesn't let you fetch the .git directory anymore.
+        # fetch .git/info/refs instead, like git clone would.
+        check_url = 'http://'+path+'.git/info/refs'
+        web = 'http://' + path
+    elif re_googlecode.match(path):
+        check_url = 'http://'+path
+        web = 'http://code.google.com/p/' + path[:path.index('.')]
+    else:
+        return False, False
+    return web, check_url
+
+re_bitbucket_web = re.compile(r'bitbucket\.org/([a-z0-9A-Z_.\-]+)/([a-z0-9A-Z_.\-]+)')
+re_googlecode_web = re.compile(r'code.google.com/p/([a-z0-9\-]+)')
+re_github_web = re.compile(r'github\.com/([a-z0-9A-Z_.\-]+)/([a-z0-9A-Z_.\-]+)')
+re_striphttp = re.compile(r'http://(www\.)?')
+
+def web_to_vc(url):
+    url = re_striphttp.sub('', url)
+    m = re_bitbucket_web.match(url)
+    if m:
+        return 'bitbucket.org/'+m.group(1)+'/'+m.group(2)
+    m = re_github_web.match(url)
+    if m:
+        return 'github.com/'+m.group(1)+'/'+m.group(2)
+    m = re_googlecode_web.match(url)
+    if m:
+        path = m.group(1)+'.googlecode.com/'
+        # perform http request to path/hg to check if they're using mercurial
+        vcs = 'svn'
+        try:
+            response = urlfetch.fetch('http://'+path+'hg', deadline=1)
+            if response.status_code == 200:
+                vcs = 'hg'
+        except: pass
+        return path + vcs
+    return False
+
 MaxPathLength = 100
+CacheTimeout = 3600
 
 class PackagePage(webapp.RequestHandler):
     def get(self):
         if self.request.get('fmt') == 'json':
             return self.json()
 
-        q = Package.all()
-        q.order('-last_install')
-        by_time = q.fetch(100)
+        html = memcache.get('view-package')
+        if not html:
+            q = Package.all()
+            q.order('-last_install')
+            by_time = q.fetch(100)
 
-        q = Package.all()
-        q.order('-count')
-        by_count = q.fetch(100)
+            q = Package.all()
+            q.order('-count')
+            by_count = q.fetch(100)
 
-        self.response.headers['Content-Type'] = 'text/html; charset=utf-8'
-        path = os.path.join(os.path.dirname(__file__), 'package.html')
-        self.response.out.write(template.render(path, {"by_time": by_time, "by_count": by_count}))
+            self.response.headers['Content-Type'] = 'text/html; charset=utf-8'
+            path = os.path.join(os.path.dirname(__file__), 'package.html')
+            html = template.render(
+                path, 
+                {"by_time": by_time, "by_count": by_count}
+            )
+            memcache.set('view-package', html, time=CacheTimeout)
+
+        self.response.out.write(html)
 
     def json(self):
-        self.response.set_status(200)
-        self.response.headers['Content-Type'] = 'text/plain; charset=utf-8'
-        q = Package.all()
-        s = '{"packages": ['
-        sep = ''
-        for r in q.fetch(1000):
-            s += '%s\n\t{"path": "%s", "last_install": "%s", "count": "%s"}' % (sep, r.path, r.last_install, r.count)
-            sep = ','
-        s += '\n]}\n'
-        self.response.out.write(s)
+        json = memcache.get('view-package-json')
+        if not json:
+            self.response.set_status(200)
+            self.response.headers['Content-Type'] = 'text/plain; charset=utf-8'
+            q = Package.all()
+            s = '{"packages": ['
+            sep = ''
+            for r in q.fetch(1000):
+                s += '%s\n\t{"path": "%s", "last_install": "%s", "count": "%s"}' % (sep, r.path, r.last_install, r.count)
+                sep = ','
+            s += '\n]}\n'
+            json = s
+            memcache.set('view-package-json', json, time=CacheTimeoout)
+        self.response.out.write(json)
 
     def can_get_url(self, url):
         try:
@@ -104,18 +160,8 @@ class PackagePage(webapp.RequestHandler):
         p = Package.get_by_key_name(key)
         if p is None:
             # not in datastore - verify URL before creating
-            if re_bitbucket.match(path):
-                check_url = 'http://' + path + '/?cmd=heads'
-                web = 'http://' + path + '/'
-            elif re_github.match(path):
-                # github doesn't let you fetch the .git directory anymore.
-                # fetch .git/info/refs instead, like git clone would.
-                check_url = 'http://'+path+'.git/info/refs'
-                web = 'http://' + path
-            elif re_googlecode.match(path):
-                check_url = 'http://'+path
-                web = 'http://code.google.com/p/' + path[:path.index('.')]
-            else:
+            web, check_url = vc_to_web(path)
+            if not web:
                 logging.error('unrecognized path: %s', path)
                 return False
             if not self.can_get_url(check_url):
@@ -150,9 +196,27 @@ class ProjectPage(webapp.RequestHandler):
             self.redirect(users.create_logout_url("/project"))
         elif self.request.path == "/project/edit" and admin:
             self.edit()
+        elif self.request.path == "/project/assoc" and admin:
+            self.assoc()
         else:
             self.list()
 
+    def assoc(self):
+        projects = Project.all()
+        for p in projects:
+            if p.package:
+                continue
+            path = web_to_vc(p.web_url)
+            if not path:
+                continue
+            pkg = Package.get_by_key_name("pkg-"+path)
+            if not pkg:
+                self.response.out.write('no: %s %s<br>' % (p.web_url, path))
+                continue
+            p.package = pkg
+            p.put()
+            self.response.out.write('yes: %s %s<br>' % (p.web_url, path))
+
     def post(self):
         if self.request.path == "/project/edit":
             self.edit(True)
@@ -177,30 +241,37 @@ class ProjectPage(webapp.RequestHandler):
 
             self.list({"submitMsg": "Your project has been submitted."})
 
-    def list(self, data={}):
-        projects = Project.all().order('category').order('name')
-
+    def list(self, additional_data={}):
+        data = memcache.get('view-project-data')
         admin = users.is_current_user_admin()
-        if not admin:
-            projects = projects.filter('approved =', True)
-
-        projects = list(projects)
-
-        tags = sets.Set()
-        for p in projects:
-            for t in p.tags:
-                tags.add(t)
-
-        tag = self.request.get("tag", None)
-        if tag:
-            projects = filter(lambda x: tag in x.tags, projects)
+        if admin or not data:
+            projects = Project.all().order('category').order('name')
+            if not admin:
+                projects = projects.filter('approved =', True)
+            projects = list(projects)
+
+            tags = sets.Set()
+            for p in projects:
+                for t in p.tags:
+                    tags.add(t)
+
+            tag = self.request.get('tag', None)
+            if tag:
+                projects = filter(lambda x: tag in x.tags, projects)
+
+            data = {}
+            data['tag'] = tag
+            data['tags'] = tags
+            data['projects'] = projects 
+            data['admin']= admin
+            if not admin:
+                memcache.set('view-project-data', data, time=CacheTimeout)
+
+        for k, v in additional_data.items():
+            data[k] = v
 
         self.response.headers['Content-Type'] = 'text/html; charset=utf-8'
         path = os.path.join(os.path.dirname(__file__), 'project.html')
-        data["tag"] = tag
-        data["tags"] = tags
-        data["projects"] = projects 
-        data["admin"] = admin
         self.response.out.write(template.render(path, data))
 
     def edit(self, save=False):
@@ -228,7 +299,8 @@ class ProjectPage(webapp.RequestHandler):
                 p.approved = self.request.get("approved") == "1"
                 p.tags = filter(lambda x: x, self.request.get("tags", "").split(","))
                 p.put()
-            self.redirect("/project")
+            memcache.delete('view-project-data')
+            self.redirect('/project')
             return
 
         # get all project categories and tags