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Take a remote md5sum before a file transfer to decide whether to transfer the file or not.

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Allows for efficient transfer of large files.  Templates do not sample first because they are small.
This commit is contained in:
Michael DeHaan 2012-07-07 09:10:18 -04:00
parent 6c08913448
commit c2b8fabf66
1 changed files with 24 additions and 10 deletions
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18
lib/ansible/runner/__init__.py
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@ -430,16 +430,26 @@ class Runner(object):
break
if not found:
results=dict(failed=True, msg="could not find src in first_available_file list")
return ReturnData(host=conn.host, is_error=True, results=results)
return ReturnData(host=conn.host, results=results)
if self.module_vars is not None:
inject.update(self.module_vars)
source = utils.template(source, inject, self.setup_cache)
source = utils.path_dwim(self.basedir, source)
local_md5 = utils.local_md5(source)
if local_md5 is None:
result=dict(failed=True, msg="could not find src=%s" % source)
return ReturnData(host=conn.host, result=result)
remote_md5 = self._remote_md5(conn, tmp, dest)
exec_rc = None
if local_md5 != remote_md5:
# transfer the file to a remote tmp location
tmp_src = tmp + source.split('/')[-1]
conn.put_file(utils.path_dwim(self.basedir, source), tmp_src)
conn.put_file(source, tmp_src)
# install the copy module
self.module_name = 'copy'
@ -448,6 +458,10 @@ class Runner(object):
# run the copy module
args = "src=%s dest=%s" % (tmp_src, dest)
exec_rc = self._execute_module(conn, tmp, module, args)
else:
# no need to transfer the file, already correct md5
result = dict(changed=False, md5sum=remote_md5, transferred=False)
exec_rc = ReturnData(host=conn.host, result=result)
if exec_rc.is_successful():
return self._chain_file_module(conn, tmp, exec_rc, options)