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authorRodolfo Carvalho <rhcarvalho@gmail.com>2017-01-13 10:06:40 +0100
committerRodolfo Carvalho <rhcarvalho@gmail.com>2017-01-13 16:59:31 +0100
commit43b22a73c43d8975403994b5f085735e1d3786ba (patch)
tree696337ac9b7f1ba7bbee4c47b7ec21b1d777f400 /roles
parentac4db698d82d405f3b213f222ae22f62213af000 (diff)
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Move Python modules into role
Allow reuse via role dependency.
Diffstat (limited to 'roles')
-rwxr-xr-xroles/openshift_preflight/base/library/aos_version.py100
-rwxr-xr-xroles/openshift_preflight/base/library/check_yum_update.py116
l---------roles/openshift_preflight/common/library1
-rw-r--r--roles/openshift_preflight/common/meta/main.yml3
l---------roles/openshift_preflight/masters/library1
-rw-r--r--roles/openshift_preflight/masters/meta/main.yml3
l---------roles/openshift_preflight/nodes/library1
-rw-r--r--roles/openshift_preflight/nodes/meta/main.yml3
8 files changed, 225 insertions, 3 deletions
diff --git a/roles/openshift_preflight/base/library/aos_version.py b/roles/openshift_preflight/base/library/aos_version.py
new file mode 100755
index 000000000..f7fcb6da5
--- /dev/null
+++ b/roles/openshift_preflight/base/library/aos_version.py
@@ -0,0 +1,100 @@
+#!/usr/bin/python
+# vim: expandtab:tabstop=4:shiftwidth=4
+'''
+An ansible module for determining if more than one minor version
+of any atomic-openshift package is available, which would indicate
+that multiple repos are enabled for different versions of the same
+thing which may cause problems.
+
+Also, determine if the version requested is available down to the
+precision requested.
+'''
+
+# import os
+# import sys
+import yum # pylint: disable=import-error
+from ansible.module_utils.basic import AnsibleModule
+
+
+def main(): # pylint: disable=missing-docstring
+ module = AnsibleModule(
+ argument_spec=dict(
+ version=dict(required=True)
+ ),
+ supports_check_mode=True
+ )
+
+ # NOTE(rhcarvalho): sosiouxme added _unmute, but I couldn't find a case yet
+ # for when it is actually necessary. Leaving it commented out for now,
+ # though this comment and the commented out code related to _unmute should
+ # be deleted later if not proven necessary.
+
+ # sys.stdout = os.devnull # mute yum so it doesn't break our output
+ # sys.stderr = os.devnull # mute yum so it doesn't break our output
+
+ # def _unmute(): # pylint: disable=missing-docstring
+ # sys.stdout = sys.__stdout__
+
+ def bail(error): # pylint: disable=missing-docstring
+ # _unmute()
+ module.fail_json(msg=error)
+
+ yb = yum.YumBase() # pylint: disable=invalid-name
+
+ # search for package versions available for aos pkgs
+ expected_pkgs = [
+ 'atomic-openshift',
+ 'atomic-openshift-master',
+ 'atomic-openshift-node',
+ ]
+ try:
+ pkgs = yb.pkgSack.returnPackages(patterns=expected_pkgs)
+ except yum.Errors.PackageSackError as e: # pylint: disable=invalid-name
+ # you only hit this if *none* of the packages are available
+ bail('Unable to find any atomic-openshift packages. \nCheck your subscription and repo settings. \n%s' % e)
+
+ # determine what level of precision we're expecting for the version
+ expected_version = module.params['version']
+ if expected_version.startswith('v'): # v3.3 => 3.3
+ expected_version = expected_version[1:]
+ num_dots = expected_version.count('.')
+
+ pkgs_by_name_version = {}
+ pkgs_precise_version_found = {}
+ for pkg in pkgs:
+ # get expected version precision
+ match_version = '.'.join(pkg.version.split('.')[:num_dots + 1])
+ if match_version == expected_version:
+ pkgs_precise_version_found[pkg.name] = True
+ # get x.y version precision
+ minor_version = '.'.join(pkg.version.split('.')[:2])
+ if pkg.name not in pkgs_by_name_version:
+ pkgs_by_name_version[pkg.name] = {}
+ pkgs_by_name_version[pkg.name][minor_version] = True
+
+ # see if any packages couldn't be found at requested version
+ # see if any packages are available in more than one minor version
+ not_found = []
+ multi_found = []
+ for name in expected_pkgs:
+ if name not in pkgs_precise_version_found:
+ not_found.append(name)
+ if name in pkgs_by_name_version and len(pkgs_by_name_version[name]) > 1:
+ multi_found.append(name)
+ if not_found:
+ msg = 'Not all of the required packages are available at requested version %s:\n' % expected_version
+ for name in not_found:
+ msg += ' %s\n' % name
+ bail(msg + 'Please check your subscriptions and enabled repositories.')
+ if multi_found:
+ msg = 'Multiple minor versions of these packages are available\n'
+ for name in multi_found:
+ msg += ' %s\n' % name
+ bail(msg + "There should only be one OpenShift version's repository enabled at a time.")
+
+ # _unmute()
+ module.exit_json(changed=False)
+
+
+if __name__ == '__main__':
+ main()
diff --git a/roles/openshift_preflight/base/library/check_yum_update.py b/roles/openshift_preflight/base/library/check_yum_update.py
new file mode 100755
index 000000000..296ebd44f
--- /dev/null
+++ b/roles/openshift_preflight/base/library/check_yum_update.py
@@ -0,0 +1,116 @@
+#!/usr/bin/python
+# vim: expandtab:tabstop=4:shiftwidth=4
+'''
+Ansible module to test whether a yum update or install will succeed,
+without actually performing it or running yum.
+parameters:
+ packages: (optional) A list of package names to install or update.
+ If omitted, all installed RPMs are considered for updates.
+'''
+
+# import os
+import sys
+import yum # pylint: disable=import-error
+from ansible.module_utils.basic import AnsibleModule
+
+
+def main(): # pylint: disable=missing-docstring,too-many-branches
+ module = AnsibleModule(
+ argument_spec=dict(
+ packages=dict(type='list', default=[])
+ ),
+ supports_check_mode=True
+ )
+
+ # NOTE(rhcarvalho): sosiouxme added _unmute, but I couldn't find a case yet
+ # for when it is actually necessary. Leaving it commented out for now,
+ # though this comment and the commented out code related to _unmute should
+ # be deleted later if not proven necessary.
+
+ # sys.stdout = os.devnull # mute yum so it doesn't break our output
+
+ # def _unmute(): # pylint: disable=missing-docstring
+ # sys.stdout = sys.__stdout__
+
+ def bail(error): # pylint: disable=missing-docstring
+ # _unmute()
+ module.fail_json(msg=error)
+
+ yb = yum.YumBase() # pylint: disable=invalid-name
+ # determine if the existing yum configuration is valid
+ try:
+ yb.repos.populateSack(mdtype='metadata', cacheonly=1)
+ # for error of type:
+ # 1. can't reach the repo URL(s)
+ except yum.Errors.NoMoreMirrorsRepoError as e: # pylint: disable=invalid-name
+ bail('Error getting data from at least one yum repository: %s' % e)
+ # 2. invalid repo definition
+ except yum.Errors.RepoError as e: # pylint: disable=invalid-name
+ bail('Error with yum repository configuration: %s' % e)
+ # 3. other/unknown
+ # * just report the problem verbatim
+ except: # pylint: disable=bare-except; # noqa
+ bail('Unexpected error with yum repository: %s' % sys.exc_info()[1])
+
+ packages = module.params['packages']
+ no_such_pkg = []
+ for pkg in packages:
+ try:
+ yb.install(name=pkg)
+ except yum.Errors.InstallError as e: # pylint: disable=invalid-name
+ no_such_pkg.append(pkg)
+ except: # pylint: disable=bare-except; # noqa
+ bail('Unexpected error with yum install/update: %s' %
+ sys.exc_info()[1])
+ if not packages:
+ # no packages requested means test a yum update of everything
+ yb.update()
+ elif no_such_pkg:
+ # wanted specific packages to install but some aren't available
+ user_msg = 'Cannot install all of the necessary packages. Unavailable:\n'
+ for pkg in no_such_pkg:
+ user_msg += ' %s\n' % pkg
+ user_msg += 'You may need to enable one or more yum repositories to make this content available.'
+ bail(user_msg)
+
+ try:
+ txn_result, txn_msgs = yb.buildTransaction()
+ except: # pylint: disable=bare-except; # noqa
+ bail('Unexpected error during dependency resolution for yum update: \n %s' %
+ sys.exc_info()[1])
+
+ # find out if there are any errors with the update/install
+ if txn_result == 0: # 'normal exit' meaning there's nothing to install/update
+ pass
+ elif txn_result == 1: # error with transaction
+ user_msg = 'Could not perform a yum update.\n'
+ if len(txn_msgs) > 0:
+ user_msg += 'Errors from dependency resolution:\n'
+ for msg in txn_msgs:
+ user_msg += ' %s\n' % msg
+ user_msg += 'You should resolve these issues before proceeding with an install.\n'
+ user_msg += 'You may need to remove or downgrade packages or enable/disable yum repositories.'
+ bail(user_msg)
+ # TODO: it would be nice depending on the problem:
+ # 1. dependency for update not found
+ # * construct the dependency tree
+ # * find the installed package(s) that required the missing dep
+ # * determine if any of these packages matter to openshift
+ # * build helpful error output
+ # 2. conflicts among packages in available content
+ # * analyze dependency tree and build helpful error output
+ # 3. other/unknown
+ # * report the problem verbatim
+ # * add to this list as we come across problems we can clearly diagnose
+ elif txn_result == 2: # everything resolved fine
+ pass
+ else:
+ bail('Unknown error(s) from dependency resolution. Exit Code: %d:\n%s' %
+ (txn_result, txn_msgs))
+
+ # _unmute()
+ module.exit_json(changed=False)
+
+
+if __name__ == '__main__':
+ main()
diff --git a/roles/openshift_preflight/common/library b/roles/openshift_preflight/common/library
deleted file mode 120000
index ba40d2f56..000000000
--- a/roles/openshift_preflight/common/library
+++ /dev/null
@@ -1 +0,0 @@
-../../../library \ No newline at end of file
diff --git a/roles/openshift_preflight/common/meta/main.yml b/roles/openshift_preflight/common/meta/main.yml
new file mode 100644
index 000000000..6f23cbf3b
--- /dev/null
+++ b/roles/openshift_preflight/common/meta/main.yml
@@ -0,0 +1,3 @@
+---
+dependencies:
+ - role: openshift_preflight/base
diff --git a/roles/openshift_preflight/masters/library b/roles/openshift_preflight/masters/library
deleted file mode 120000
index ba40d2f56..000000000
--- a/roles/openshift_preflight/masters/library
+++ /dev/null
@@ -1 +0,0 @@
-../../../library \ No newline at end of file
diff --git a/roles/openshift_preflight/masters/meta/main.yml b/roles/openshift_preflight/masters/meta/main.yml
new file mode 100644
index 000000000..6f23cbf3b
--- /dev/null
+++ b/roles/openshift_preflight/masters/meta/main.yml
@@ -0,0 +1,3 @@
+---
+dependencies:
+ - role: openshift_preflight/base
diff --git a/roles/openshift_preflight/nodes/library b/roles/openshift_preflight/nodes/library
deleted file mode 120000
index ba40d2f56..000000000
--- a/roles/openshift_preflight/nodes/library
+++ /dev/null
@@ -1 +0,0 @@
-../../../library \ No newline at end of file
diff --git a/roles/openshift_preflight/nodes/meta/main.yml b/roles/openshift_preflight/nodes/meta/main.yml
new file mode 100644
index 000000000..6f23cbf3b
--- /dev/null
+++ b/roles/openshift_preflight/nodes/meta/main.yml
@@ -0,0 +1,3 @@
+---
+dependencies:
+ - role: openshift_preflight/base