Initial import of NagioGen

git-svn-id: https://svn.mcs.anl.gov/repos/bcfg/trunk/bcfg2@4928 ce84e21b-d406-0410-9b95-82705330c041

2 files changed, 79 insertions, 1 deletions

diff --git a/src/lib/Server/Plugins/NagiosGen.py b/src/lib/Server/Plugins/NagiosGen.py
new file mode 100644
index 000000000..30ac93984
--- /dev/null
+++ b/src/lib/Server/Plugins/NagiosGen.py
@@ -0,0 +1,78 @@
+'''This module implements a Nagios configuration generator'''
+
+import re, os, glob, socket, logging
+import Bcfg2.Server.Plugin
+
+LOGGER = logging.getLogger('Bcfg2.Plugins.NagiosGen')
+class NagiosGen(Bcfg2.Server.Plugin.Plugin):
+    '''NagiosGen is a Bcfg2 plugin that dynamically generates
+       Nagios configuration file based on Bcfg2 data.'''
+    __name__ = 'NagiosGen'
+    __version__ = '0.6'
+    __author__ = 'bcfg-dev@mcs.anl.gov'
+    
+    def __init__(self, core, datastore):
+        Bcfg2.Server.Plugin.Plugin.__init__(self, core, datastore)
+        self.Entries = {'ConfigFile':
+                {'/etc/nagiosgen.status'   : self.createhostconfig,
+                '/etc/nagios/nagiosgen.cfg': self.createserverconfig}}
+        
+        self.client_attrib = {'encoding': 'ascii', 'owner':'root', \
+                         'group':'root',   'perms':'0400'}
+        self.server_attrib = {'encoding': 'ascii', 'owner':'nagios', \
+                         'group':'nagios', 'perms':'0440'}
+
+    def createhostconfig(self, entry, metadata):
+        '''Build host specific configuration file'''
+        host_address = socket.gethostbyname(metadata.hostname)
+        host_groups = filter(lambda x: os.path.isfile('%s/%s-group.cfg' % \
+                            (self.data, x)), metadata.groups)
+        host_config = \
+   'define host{\n\
+    use             default\n\
+    host_name       %s\n\
+    alias           %s\n\
+    address         %s\n' % \
+        (metadata.hostname, metadata.hostname, host_address )
+        if host_groups:
+            host_config += ' hostgroups      %s\n' % (",".join(host_groups))
+        host_config += ' }\n'
+        entry.text = host_config
+        [entry.attrib.__setitem__(key, value) for \
+            (key, value) in self.client_attrib.iteritems()]      
+        try:
+            fileh = open( "%s/%s-host.cfg" % \
+                        (self.data, metadata.hostname), 'w' )
+            fileh.write(host_config)
+            fileh.close()
+        except OSError, ioerr:
+            LOGGER.error("Failed to write %s/%s-host.cfg" % \
+                        (self.data, metadata.hostname))
+            LOGGER.error(ioerr)
+      
+    def createserverconfig(self, entry, metadata):
+        '''Build monolithic server configuration file'''
+        host_configs  = glob.glob('%s/*-host.cfg' % self.data)
+        group_configs = glob.glob('%s/*-group.cfg' % self.data)
+        host_data = ""
+        group_data = ""
+        for host in host_configs:
+            hostfile = open( host, 'r' )
+            host_data += hostfile.read()
+            hostfile.close()
+        for group in group_configs:
+            group_name = re.sub("(-group.cfg|.*/(?=[^/]+))", "", group)
+            if host_data.find(group_name) != -1:
+                groupfile = open( group, 'r' )
+                group_data += groupfile.read()
+                groupfile.close()
+        entry.text = group_data + host_data
+        [entry.attrib.__setitem__(key, value) for \
+            (key, value) in self.server_attrib.iteritems()] 
+        try:
+            fileh = open( "%s/nagiosgen.cfg" % (self.data), 'w' )
+            fileh.write(group_data + host_data)
+            fileh.close()
+        except OSError, ioerr:
+            LOGGER.error("Failed to write %s/nagiosgen.cfg" % (self.data))
+            LOGGER.error(ioerr)
diff --git a/src/lib/Server/Plugins/__init__.py b/src/lib/Server/Plugins/__init__.py
index 00c161d64..9707fbfeb 100644
--- a/src/lib/Server/Plugins/__init__.py
+++ b/src/lib/Server/Plugins/__init__.py
@@ -1,6 +1,6 @@
 '''imports for Bcfg2.Server.Plugins'''
 __revision__ = '$Revision$'
 
-__all__ = ['Account', 'Base', 'Bundler', 'Cfg', 'Hostbase', 'Metadata',
+__all__ = ['Account', 'Base', 'Bundler', 'Cfg', 'Hostbase', 'Metadata', 'NagiosGen',
            'Pkgmgr', 'Rules', 'SSHbase', 'Statistics', 'Svcmgr', 'TCheetah',
            'SGenshi', 'TGenshi', 'Vhost']