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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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29
lib/ansible/runner/action_plugins/fetch.py
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@ -114,19 +114,22 @@ class ActionModule(object):
dest = dest.replace("//","/") dest = dest.replace("//","/")
# these don't fail because you may want to transfer a log file that possibly MAY exist if remote_checksum in ('0', '1', '2', '3', '4'):
# but keep going to fetch other log files # these don't fail because you may want to transfer a log file that possibly MAY exist
if remote_checksum == '0': # but keep going to fetch other log files
result = dict(msg="unable to calculate the checksum of the remote file", file=source, changed=False) if remote_checksum == '0':
return ReturnData(conn=conn, result=result) result = dict(msg="unable to calculate the checksum of the remote file", file=source, changed=False)
if remote_checksum == '1': elif remote_checksum == '1':
if fail_on_missing: if fail_on_missing:
result = dict(failed=True, msg="the remote file does not exist", file=source) result = dict(failed=True, msg="the remote file does not exist", file=source)
else: else:
result = dict(msg="the remote file does not exist, not transferring, ignored", file=source, changed=False) result = dict(msg="the remote file does not exist, not transferring, ignored", file=source, changed=False)
return ReturnData(conn=conn, result=result) elif remote_checksum == '2':
if remote_checksum == '2': result = dict(msg="no read permission on remote file, not transferring, ignored", file=source, changed=False)
result = dict(msg="no read permission on remote file, not transferring, ignored", file=source, changed=False) elif remote_checksum == '3':
result = dict(msg="remote file is a directory, fetch cannot work on directories", file=source, changed=False)
elif remote_checksum == '4':
result = dict(msg="python isn't present on the remote system. Unable to fetch file", file=source, changed=False)
return ReturnData(conn=conn, result=result) return ReturnData(conn=conn, result=result)
# calculate checksum for the local file # calculate checksum for the local file

19
lib/ansible/runner/shell_plugins/sh.py
View file

@ -82,14 +82,29 @@ class ShellModule(object):
path = pipes.quote(path) path = pipes.quote(path)
# The following test needs to be SH-compliant. BASH-isms will # The following test needs to be SH-compliant. BASH-isms will
# not work if /bin/sh points to a non-BASH shell. # 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 = [ 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 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 "(%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 = " || ".join(csums)
cmd = "%s; %s || (echo \"${rc} %s\")" % (test, cmd, path) cmd = "%s; %s || (echo \"0 %s\")" % (test, cmd, path)
return cmd return cmd
def build_module_command(self, env_string, shebang, cmd, rm_tmp=None): def build_module_command(self, env_string, shebang, cmd, rm_tmp=None):