fix(get_scylla_versions): handle offline installer case

this function is broken when offline installer test are run
and we don't have the version in Argus,
with this change, skip getting the version from RPMs/DEBs
and use the scylla commandline only

Fixes: #6388

sdcm/db_stats.py

@@ -559,31 +559,41 @@ def _init_stats(self):
 
     def get_scylla_versions(self):
         versions = {}
+        node = self.db_cluster.nodes[0]
         try:
-            node = self.db_cluster.nodes[0]
             if node.scylla_version_detailed and 'build-id' in node.scylla_version_detailed:
                 build_id = node.scylla_version_detailed.split('with build-id ')[-1].strip()
             else:
                 build_id = node.get_scylla_build_id()
-            if node.distro.is_rhel_like:
-                version_cmd = 'rpm -qa |grep scylla'
+
+            # handle offline installer case
+            if self.params.get('unified_package'):
+                match = re.search(r'(([\w.~]+)-(0.)?([0-9]{8,8}).(\w+).)', node.scylla_version_detailed)
+                if match:
+                    versions['scylla-server'] = versions.get('scylla-server', {}) | {'version': match.group(2),
+                                                                                     'date': match.group(4),
+                                                                                     'commit_id': match.group(5),
+                                                                                     'build_id': build_id if build_id else ''}
             else:
-                version_cmd = "dpkg -l |grep scylla|awk '{print $2 \"-\" $3}'"
-            versions_output = node.remoter.run(version_cmd).stdout.splitlines()
-            for line in versions_output:
-                for package in ['scylla-jmx', 'scylla-server', 'scylla-tools', 'scylla-enterprise-jmx',
-                                'scylla-enterprise-server', 'scylla-enterprise-tools']:
-                    match = re.search(r'(%s-([\w.~]+)-(0.)?([0-9]{8,8}).(\w+).)' % package, line)
-                    if match:
-                        versions[package.replace('-enterprise', '')] = {'version': match.group(2),
-                                                                        'date': match.group(4),
-                                                                        'commit_id': match.group(5),
-                                                                        'build_id': build_id if build_id else ''}
+                if node.distro.is_rhel_like:
+                    version_cmd = 'rpm -qa |grep scylla'
+                else:
+                    version_cmd = "dpkg -l |grep scylla|awk '{print $2 \"-\" $3}'"
+                versions_output = node.remoter.run(version_cmd).stdout.splitlines()
+                for line in versions_output:
+                    for package in ['scylla-jmx', 'scylla-server', 'scylla-tools', 'scylla-enterprise-jmx',
+                                    'scylla-enterprise-server', 'scylla-enterprise-tools']:
+                        match = re.search(r'(%s-([\w.~]+)-(0.)?([0-9]{8,8}).(\w+).)' % package, line)
+                        if match:
+                            versions[package.replace('-enterprise', '')] = {'version': match.group(2),
+                                                                            'date': match.group(4),
+                                                                            'commit_id': match.group(5),
+                                                                            'build_id': build_id if build_id else ''}
         except Exception as ex:  # pylint: disable=broad-except
-            LOGGER.error('Failed getting scylla versions: %s', ex)
+            LOGGER.exception('Failed getting scylla versions: %s', ex)
 
         # append Scylla build mode in scylla_versions
-        versions['scylla-server']['build_mode'] = node.scylla_build_mode
+        versions['scylla-server'] = versions.get('scylla-server', {}) | {'build_mode': node.scylla_build_mode}
 
         return versions