Dev: adds a new command $ crm check migration

This new command checks if the migration from sle15 to sle16 is safe.
(ref: PED-8270)

crmsh/report/utils.py

@@ -638,8 +638,11 @@ def pkg_ver_deb(self) -> str:
         _, out, _ = ShellUtils().get_stdout_stderr(cmd)
         return '\n'.join([line for line in out.splitlines() if "no packages found" not in line])
 
-    def pkg_ver_rpm(self) -> str:
-        _, out, _ = ShellUtils().get_stdout_stderr(f"rpm -q {self.packages}")
+    def pkg_ver_rpm(self, format='') -> str:
+        if format == '':
+            _, out, _ = ShellUtils().get_stdout_stderr(f"rpm -q {self.packages}")
+        else:
+            _, out, _ = ShellUtils().get_stdout_stderr(f'rpm -q {self.packages} --queryformat="{format}" ')
         return '\n'.join([line for line in out.splitlines() if "not installed" not in line])
 
     def version(self) -> str:

crmsh/ui_check.py

@@ -0,0 +1,52 @@
+# Copyright (C) 2024 Aleksei Burlakov <[email protected]>
+# See COPYING for license information.
+from . import command
+from . import log
+from typing import Tuple
+from crmsh.report import utils as report_utils
+from crmsh import utils as just_utils
+
+logger = log.setup_logger(__name__)
+
+class Check(command.UI):
+    '''
+    Check that migration to sle16 is safe
+
+    - Packages installed correctly
+    - T.B.A.
+    '''
+    name = "check"
+
+    def requires(self):
+        return True
+
+    def __init__(self):
+        command.UI.__init__(self)
+
+    def check_version_SAPHanaSR(self) -> Tuple[int, str]:
+        pkg = report_utils.Package('SAPHanaSR')
+        SAPHanaSR_current_version = pkg.pkg_ver_rpm('%{VERSION}')
+        SAPHanaSR_minimum_version = '0.162.2'
+        if SAPHanaSR_current_version == '':
+            return -1, 'SAPHanaSR is not installed'
+
+        if not just_utils.is_larger_than_min_version(SAPHanaSR_current_version, SAPHanaSR_minimum_version):
+            return -1, f'SAPHanaSR is too old. Minimum required version {SAPHanaSR_minimum_version}'
+
+        return 0, ''
+
+    def check_version_FOOPackage(self) -> Tuple[int, str]:
+        if False:
+            return -1, 'Check has failed'
+        return 0, ''
+
+    @command.skill_level('administrator')
+    def do_migration(self, context, *args):
+        'usage: migration'
+
+        rc, errmsg = self.check_version_SAPHanaSR()
+
+        if rc == 0:
+            print(f'OK: SAPHanaSR')
+        else:
+            print(f'FAIL: SAPHanaSR: {errmsg}')

crmsh/ui_root.py

@@ -22,6 +22,7 @@
 from . import cmd_status
 from . import ui_cib
 from . import ui_cibstatus
+from . import ui_check
 from . import ui_cluster
 from . import ui_configure
 from . import ui_corosync
@@ -68,6 +69,13 @@ def do_cibstatus(self):
     def do_cluster(self):
         pass
 
+    @command.level(ui_check.Check)
+    @command.help('''Query the checks from the trento landscape:
+List, execute, show details.
+''')
+    def do_check(self):
+        pass
+
     @command.level(ui_configure.CibConfig)
     @command.help('''CRM cluster configuration
 The configuration level.