Uses binary cache.

src/zc/buildout/networkcache.py

@@ -20,6 +20,14 @@ import re
 import shutil
 import urlparse
 import traceback
+import ctypes
+from ctypes import util
+
+SYS, _, KERNEL, _, ARCH = os.uname()
+LIBC = ctypes.cdll.LoadLibrary(ctypes.util.find_library('c'))
+LIBC_VERSION_FUN = LIBC.gnu_get_libc_version
+LIBC_VERSION_FUN.restype = ctypes.c_char_p
+LIBC_VERSION = "libc-%s" % LIBC_VERSION_FUN()
 
 try:
     try:
@@ -76,7 +84,7 @@ def get_directory_key(url):
 
 @fallback_call
 def download_network_cached(dir_url, cache_url, path, url, logger,
-                            signature_certificate_list, md5sum=None):
+                            signature_certificate_list, md5sum=None, binary_mode=False):
     """Downloads from a network cache provider
 
     If something fail (providor be offline, or hash_string fail), we ignore
@@ -92,8 +100,12 @@ def download_network_cached(dir_url, cache_url, path, url, logger,
     if md5sum is None:
         md5sum = _get_md5_from_url(url)
 
+    if binary_mode:
+      directory_key = "binary-%s-%s-%s" % \
+          (os.path.basename(path), SYS, ARCH)
+    else:
+      directory_key = get_directory_key(url)
 
-    directory_key = get_directory_key(url)
     url = os.path.basename(url)
 
     if len(signature_certificate_list) == 0:
@@ -108,7 +120,7 @@ def download_network_cached(dir_url, cache_url, path, url, logger,
 
     logger.info('Downloading %s from network cache.' % url)
     try:
-        file_descriptor = nc.select(directory_key)
+        file_descriptor = nc.select(directory_key, binary_mode=binary_mode)
 
         f = open(path, 'w+b')
         try:
@@ -131,7 +143,7 @@ def download_network_cached(dir_url, cache_url, path, url, logger,
 @fallback_call
 def upload_network_cached(dir_url, cache_url, external_url, path, logger,
    signature_private_key_file, shacache_cert_file, shacache_key_file,
-   shadir_cert_file, shadir_key_file):
+   shadir_cert_file, shadir_key_file, binary_mode=False):
     """Upload file to a network cache server"""
     if not LIBNETWORKCACHE_ENABLED:
         return False
@@ -141,11 +153,19 @@ def upload_network_cached(dir_url, cache_url, external_url, path, logger,
 
     logger.info('Uploading %s into network cache.' % external_url)
 
-    file_name = get_filename_from_url(external_url)
-
-    directory_key = get_directory_key(external_url)
-    kw = dict(file_name=file_name,
-              urlmd5=hashlib.md5(external_url).hexdigest())
+    if binary_mode:
+      file_name = get_filename_from_url(path)
+      directory_key = "binary-%s-%s-%s" % \
+          (file_name, SYS, ARCH)
+      kw = dict(file_name=file_name,
+                kernel=KERNEL,
+                libc_version=LIBC_VERSION,
+                urlmd5=hashlib.md5(external_url).hexdigest())
+    else:
+      file_name = get_filename_from_url(external_url)
+      directory_key = get_directory_key(external_url)
+      kw = dict(file_name=file_name,
+                urlmd5=hashlib.md5(external_url).hexdigest())
 
     f = open(path, 'r')
     # convert '' into None in order to call nc nicely