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Add error when checksumming will fail because python is not present on the remote.

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Comments for how the remote checksumming works.

Make the checksumming marginally more robust.
This commit is contained in:
Toshio Kuratomi 2014-11-11 20:05:27 -08:00
parent 565e5bbdfc
commit d4d23b1b1f
2 changed files with 33 additions and 15 deletions
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19
lib/ansible/runner/shell_plugins/sh.py
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@ -82,14 +82,29 @@ class ShellModule(object):
path = pipes.quote(path)
# The following test needs to be SH-compliant. BASH-isms will
# not work if /bin/sh points to a non-BASH shell.
test = "rc=0; [ -r \"%s\" ] || rc=2; [ -f \"%s\" ] || rc=1; [ -d \"%s\" ] && echo 3 && exit 0" % ((path,) * 3)
#
# In the following test, each condition is a check and logical
# comparison (|| or &&) that sets the rc value. Every check is run so
# the last check in the series to fail will be the rc that is
# returned.
#
# If a check fails we error before invoking the hash functions because
# hash functions may successfully take the hash of a directory on BSDs
# (UFS filesystem?) which is not what the rest of the ansible code
# expects
#
# If all of the available hashing methods fail we fail with an rc of
# 0. This logic is added to the end of the cmd at the bottom of this
# function.
test = "rc=flag; [ -r \"%(p)s\" ] || rc=2; [ -f \"%(p)s\" ] || rc=1; [ -d \"%(p)s\" ] && rc=3; %(i)s -V 2>/dev/null || rc=4; [ x\"$rc\" != \"xflag\" ] && echo \"${rc} %(p)s\" && exit 0" % dict(p=path, i=python_interp)
csums = [
"(%s -c 'import hashlib; print(hashlib.sha1(open(\"%s\", \"rb\").read()).hexdigest())' 2>/dev/null)" % (python_interp, path), # Python > 2.4 (including python3)
"(%s -c 'import sha; print(sha.sha(open(\"%s\", \"rb\").read()).hexdigest())' 2>/dev/null)" % (python_interp, path), # Python == 2.4
]
cmd = " || ".join(csums)
cmd = "%s; %s || (echo \"${rc} %s\")" % (test, cmd, path)
cmd = "%s; %s || (echo \"0 %s\")" % (test, cmd, path)
return cmd
def build_module_command(self, env_string, shebang, cmd, rm_tmp=None):