[oracle] Add initial implementation of oracle plugin

sos/report/plugins/oratab.py

@@ -0,0 +1,57 @@
+# This file is part of the sos project: https://github.com/sosreport/sos
+#
+# This copyrighted material is made available to anyone wishing to use,
+# modify, copy, or redistribute it subject to the terms and conditions of
+# version 2 of the GNU General Public License.
+#
+# See the LICENSE file in the source distribution for further information.
+
+import os
+from sos.report.plugins import Plugin, RedHatPlugin, PluginOpt
+
+
+class Oratab(Plugin, RedHatPlugin):
+    short_desc = 'Oratab discovery for Oracle instances on Linux'
+
+    plugin_name = "oratab"
+    profiles = ('services',)
+    packages = ('oratab',)
+
+    option_list = [
+        PluginOpt('oratab', default='/etc/oratab', val_type=str,
+                  desc='location of the oratab file')
+    ]
+
+    def setup(self):
+        ora_tab = self.get_option('oratab')
+
+        if os.path.isfile(ora_tab):
+            try:
+                with open(ora_tab, 'r', encoding='UTF-8') as ofile:
+                    # Since the oratab file can have multiple unique SID
+                    # entries that point to the same oracle home directory,
+                    # don't gather duplicate files
+                    path_list = set()
+
+                    with open(ora_tab, 'r', encoding='UTF-8') as ofile:
+                        for line in ofile.read().splitlines():
+                            if line.startswith('#') or not line.strip():
+                                continue
+                            path_list.add(line.split(':')[1])
+
+                    dbfiles = [
+                        'dbs/init*.ora',
+                        'dbs/spfile*.ora'
+                    ]
+
+                    self.add_copy_spec([
+                        self.path_join(path, dbfile) for dbfile in dbfiles
+                        for path in path_list])
+            except IOError as ex:
+                self._log_error(f'Could not open conf file {ora_tab}: {ex}')
+                return
+        else:
+            self._log_warn("Could not locate oratab file. "
+                           "Oracle data will not be collected.")
+
+# vim: set et ts=4 sw=4 :