def transactional_actions():
# Instantiate ZenPack
entryMap = pkg_resources.get_entry_map(dist, ZENPACK_ENTRY_POINT)
if not entryMap or len(entryMap) > 1:
raise ZenPackException(
'A ZenPack egg must contain exactly one'
' zenoss.zenpacks entry point. This egg appears to contain'
' %s such entry points.' % len(entryMap))
packName, packEntry = entryMap.items()[0]
runExternalZenpack = True
#if zenpack with same name exists we can't load both modules
#installing new egg zenpack will be done in a sub process
existing = dmd.ZenPackManager.packs._getOb(packName, None)
if existing:
log.info("Previous ZenPack exists with same name %s" % packName)
if filesOnly or not existing:
#running files only or zenpack by same name doesn't already exists
# so no need to install the zenpack in an external process
runExternalZenpack = False
module = packEntry.load()
if hasattr(module, 'ZenPack'):
zenPack = module.ZenPack(packName)
else:
zenPack = ZenPack(packName)
zenPack.eggPack = True
CopyMetaDataToZenPackObject(dist, zenPack)
if filesOnly:
for loader in (ZPL.ZPLDaemons(), ZPL.ZPLBin(),
ZPL.ZPLLibExec()):
loader.load(zenPack, None)
if fromUI and not zenPack.installableFromUI:
raise ZenPackException(
"This ZenPack cannot be installed through the UI.")
if not filesOnly:
# Look for an installed ZenPack to be upgraded. In this case
# upgraded means that it is removed before the new one is installed
# but that its objects are not removed and the packables are
# copied to the new instance.
existing = dmd.ZenPackManager.packs._getOb(packName, None)
if not existing and zenPack.prevZenPackName:
existing = dmd.ZenPackManager.packs._getOb(
zenPack.prevZenPackName, None)
deferFileDeletion = False
packables = []
upgradingFrom = None
if existing:
upgradingFrom = existing.version
for p in existing.packables():
packables.append(p)
existing.packables.removeRelation(p)
if existing.isEggPack():
forceNoFileDeletion = existing.eggPath() == dist.location
RemoveZenPack(dmd,
existing.id,
skipDepsCheck=True,
leaveObjects=True,
forceNoFileDeletion=forceNoFileDeletion,
uninstallEgg=False)
else:
# Don't delete files, might still be needed for
# migrate scripts to be run below.
deferFileDeletion = True
oldzenpack.RemoveZenPack(dmd,
existing.id,
skipDepsCheck=True,
leaveObjects=True,
deleteFiles=False)
if runExternalZenpack or forceRunExternal:
log.info("installing zenpack %s; launching process" % packName)
cmd = [binPath('zenpack')]
if link:
cmd += ["--link"]
cmd += ["--install", eggPath]
if upgradingFrom:
cmd += ['--previousversion', upgradingFrom]
if fromUI:
cmd += ["--fromui"]
cmdStr = " ".join(cmd)
log.debug("launching sub process command: %s" % cmdStr)
p = subprocess.Popen(cmdStr, shell=True)
out, err = p.communicate()
p.wait()
if p.returncode:
raise ZenPackException(
'Error installing the egg (%s): %s' %
(p.returncode, err))
dmd._p_jar.sync()
else:
dmd.ZenPackManager.packs._setObject(packName, zenPack)
zenPack = dmd.ZenPackManager.packs._getOb(packName)
#hack because ZenPack.install is overridden by a lot of zenpacks
#so we can't change the signature of install to take the
#previousVerison
zenPack.prevZenPackVersion = previousVersion
zenPack.install(dmd)
zenPack.prevZenPackVersion = None
try:
zenPack = dmd.ZenPackManager.packs._getOb(packName)
for p in packables:
pId = p.getPrimaryId()
try:
# make sure packable still exists; could be deleted by a
# migrate
getObjByPath(dmd, pId)
log.debug("adding packable relation for id %s", pId)
zenPack.packables.addRelation(p)
except (KeyError, zExceptions.NotFound):
log.debug('did not find packable %s', pId)
except AttributeError, e:
# If this happens in the child process or during the non-upgrade
# flow, reraise the exception
if not runExternalZenpack:
raise
# This specific error will occur when the version of the ZenPack
# being installed subclasses Products.ZenModel.ZenPack, but the
# previous version of the ZenPack did not.
if str(e) == "'ZenPack' object has no attribute '__of__'":
zenPack = ZenPack(packName)
else:
# This is the signature error of class-loading issues
# during zenpack upgrade. The final state should be okay,
# except that modified packables may be lost.
message = "There has been an error during the post-" + \
"installation steps for the zenpack %s. In " + \
"most cases, no further action is required. If " + \
"issues persist, please reinstall this zenpack."
message = message % packName
log.warning(message)
raise NonCriticalInstallError(message)
cleanupSkins(dmd)
return zenPack, deferFileDeletion, existing
def transactional_actions():
# Instantiate ZenPack
entryMap = pkg_resources.get_entry_map(dist, ZENPACK_ENTRY_POINT)
if not entryMap or len(entryMap) > 1:
raise ZenPackException('A ZenPack egg must contain exactly one'
' zenoss.zenpacks entry point. This egg appears to contain'
' %s such entry points.' % len(entryMap))
packName, packEntry = entryMap.items()[0]
runExternalZenpack = True
#if zenpack with same name exists we can't load both modules
#installing new egg zenpack will be done in a sub process
existing = dmd.ZenPackManager.packs._getOb(packName, None)
if existing:
log.info("Previous ZenPack exists with same name %s" % packName)
if filesOnly or not existing:
#running files only or zenpack by same name doesn't already exists
# so no need to install the zenpack in an external process
runExternalZenpack = False
module = packEntry.load()
if hasattr(module, 'ZenPack'):
zenPack = module.ZenPack(packName)
else:
zenPack = ZenPack(packName)
zenPack.eggPack = True
CopyMetaDataToZenPackObject(dist, zenPack)
if filesOnly:
for loader in (ZPL.ZPLDaemons(), ZPL.ZPLBin(), ZPL.ZPLLibExec()):
loader.load(zenPack, None)
if fromUI and not zenPack.installableFromUI:
raise ZenPackException("This ZenPack cannot be installed through the UI.")
if not filesOnly:
# Look for an installed ZenPack to be upgraded. In this case
# upgraded means that it is removed before the new one is installed
# but that its objects are not removed and the packables are
# copied to the new instance.
existing = dmd.ZenPackManager.packs._getOb(packName, None)
if not existing and zenPack.prevZenPackName:
existing = dmd.ZenPackManager.packs._getOb(
zenPack.prevZenPackName, None)
deferFileDeletion = False
packables = []
upgradingFrom = None
if existing:
upgradingFrom = existing.version
for p in existing.packables():
packables.append(p)
existing.packables.removeRelation(p)
if existing.isEggPack():
forceNoFileDeletion = existing.eggPath() == dist.location
RemoveZenPack(dmd, existing.id,
skipDepsCheck=True, leaveObjects=True,
forceNoFileDeletion=forceNoFileDeletion,
uninstallEgg=False)
else:
# Don't delete files, might still be needed for
# migrate scripts to be run below.
deferFileDeletion = True
oldzenpack.RemoveZenPack(dmd, existing.id,
skipDepsCheck=True, leaveObjects=True,
deleteFiles=False)
if runExternalZenpack or forceRunExternal:
log.info("installing zenpack %s; launching process" % packName)
cmd = [binPath('zenpack')]
if link:
cmd += ["--link"]
cmd += ["--install", eggPath]
if upgradingFrom:
cmd += ['--previousversion', upgradingFrom]
if fromUI:
cmd += ["--fromui"]
if serviceId:
cmd += ['--service-id', serviceId]
cmdStr = " ".join(cmd)
log.debug("launching sub process command: %s" % cmdStr)
p = subprocess.Popen(cmdStr,
shell=True)
out, err = p.communicate()
p.wait()
if p.returncode:
raise ZenPackException('Error installing the egg (%s): %s' %
(p.returncode, err))
dmd._p_jar.sync()
else:
dmd.ZenPackManager.packs._setObject(packName, zenPack)
zenPack = dmd.ZenPackManager.packs._getOb(packName)
#hack because ZenPack.install is overridden by a lot of zenpacks
#so we can't change the signature of install to take the
#previousVerison
zenPack.prevZenPackVersion = previousVersion
zenPack.install(dmd)
zenPack.prevZenPackVersion = None
try:
zenPack = dmd.ZenPackManager.packs._getOb(packName)
for p in packables:
pId = p.getPrimaryId()
try:
# make sure packable still exists; could be deleted by a
# migrate
getObjByPath(dmd, pId)
log.debug("adding packable relation for id %s", pId)
zenPack.packables.addRelation(p)
except (KeyError, zExceptions.NotFound):
log.debug('did not find packable %s',pId)
except AttributeError, e:
# If this happens in the child process or during the non-upgrade
# flow, reraise the exception
if not runExternalZenpack:
raise
# This specific error will occur when the version of the ZenPack
# being installed subclasses Products.ZenModel.ZenPack, but the
# previous version of the ZenPack did not.
if str(e) == "'ZenPack' object has no attribute '__of__'":
zenPack = ZenPack(packName)
else:
# This is the signature error of class-loading issues
# during zenpack upgrade. The final state should be okay,
# except that modified packables may be lost.
message = "There has been an error during the post-" + \
"installation steps for the zenpack %s. In " + \
"most cases, no further action is required. If " + \
"issues persist, please reinstall this zenpack."
message = message % packName
log.warning( message )
raise NonCriticalInstallError( message )
cleanupSkins(dmd)
return zenPack, deferFileDeletion, existing
