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Improve package state detection speed (#326)

Don't query for full details of a package. It is sufficient to output
the name and version. This also simplifies parsing the output.
This commit is contained in:
Jürgen Hötzel 2020-05-13 08:46:05 +02:00 committed by GitHub
parent 91d4d9d8c6
commit 43c805f7db
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2 changed files with 12 additions and 12 deletions

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@ -0,0 +1,2 @@
minor_changes:
- "pacman - Improve package state detection speed: Don't query for full details of a package."

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@ -153,20 +153,18 @@ from ansible.module_utils.basic import AnsibleModule
def get_version(pacman_output): def get_version(pacman_output):
"""Take pacman -Qi or pacman -Si output and get the Version""" """Take pacman -Q or pacman -S output and get the Version"""
lines = pacman_output.split('\n') fields = pacman_output.split()
for line in lines: if len(fields) == 2:
if line.startswith('Version '): return fields[1]
return line.split(':')[1].strip()
return None return None
def get_name(module, pacman_output): def get_name(module, pacman_output):
"""Take pacman -Qi or pacman -Si output and get the package name""" """Take pacman -Q or pacman -S output and get the package name"""
lines = pacman_output.split('\n') fields = pacman_output.split()
for line in lines: if len(fields) == 2:
if line.startswith('Name '): return fields[0]
return line.split(':')[1].strip()
module.fail_json(msg="get_name: fail to retrieve package name from pacman output") module.fail_json(msg="get_name: fail to retrieve package name from pacman output")
@ -175,7 +173,7 @@ def query_package(module, pacman_path, name, state="present"):
boolean to indicate if the package is up-to-date and a third boolean to indicate whether online information were available boolean to indicate if the package is up-to-date and a third boolean to indicate whether online information were available
""" """
if state == "present": if state == "present":
lcmd = "%s --query --info %s" % (pacman_path, name) lcmd = "%s --query %s" % (pacman_path, name)
lrc, lstdout, lstderr = module.run_command(lcmd, check_rc=False) lrc, lstdout, lstderr = module.run_command(lcmd, check_rc=False)
if lrc != 0: if lrc != 0:
# package is not installed locally # package is not installed locally
@ -190,7 +188,7 @@ def query_package(module, pacman_path, name, state="present"):
# get the version installed locally (if any) # get the version installed locally (if any)
lversion = get_version(lstdout) lversion = get_version(lstdout)
rcmd = "%s --sync --info %s" % (pacman_path, name) rcmd = "%s --sync --print-format \"%%n %%v\" %s" % (pacman_path, name)
rrc, rstdout, rstderr = module.run_command(rcmd, check_rc=False) rrc, rstdout, rstderr = module.run_command(rcmd, check_rc=False)
# get the version in the repository # get the version in the repository
rversion = get_version(rstdout) rversion = get_version(rstdout)