added some testing code to the snmpget builtin and renamed service to services/

lib/services/snmpget.py

@@ -0,0 +1,58 @@
+"""
+The snmpget service in pure Python.
+"""
+
+# http://pysnmp.sourceforge.net/
+
+"""
+1. install net-snmp package on localhost
+2. Use this /etc/snmp/snmpd.conf:
+
+com2sec local     127.0.0.1/32          linspector
+com2sec local     192.168.2.0/24        linspector
+#
+group MyROGroup v1         local
+group MyROGroup v2c        local
+group MyROGroup usm        local
+view all    included  .1                               80
+access MyROGroup "" any     noauth    exact  all    none   none
+#
+syslocation Sylt
+syscontact Admin {Admin@example.com}
+3. start the snmpd service
+4. the following code should work
+"""
+
+from pysnmp.entity.rfc3413.oneliner import cmdgen
+
+cmdGen = cmdgen.CommandGenerator()
+
+errorIndication, errorStatus, errorIndex, varBinds = cmdGen.getCmd(
+    cmdgen.CommunityData('linspector'),
+    cmdgen.UdpTransportTarget(('localhost', 161)),
+
+    # Names variables:
+    #cmdgen.MibVariable('SNMPv2-MIB', 'sysName', 0)
+
+    # OID's:
+    cmdgen.MibVariable('.1.3.6.1.4.1.2021.10.1.3.1')  # load
+    #cmdgen.MibVariable('.1.3.6.1.4.1.2021.10.1.3.2')  # load
+    #cmdgen.MibVariable('.1.3.6.1.4.1.2021.10.1.3.3')  # load
+    #cmdgen.MibVariable('.1.3.6.1.2.1.1.3.0')  # systems uptime
+    # more:
+    # http://www.debianadmin.com/linux-snmp-oids-for-cpumemory-and-disk-statistics.html
+    # http://www.mibdepot.com/index.shtml
+)
+
+# Check for errors and print out results
+if errorIndication:
+    print(errorIndication)
+else:
+    if errorStatus:
+        print('%s at %s' % (
+            errorStatus.prettyPrint(),
+            errorIndex and varBinds[int(errorIndex) - 1] or '?'
+        ))
+    else:
+        for name, val in varBinds:
+            print('%s = %s' % (name.prettyPrint(), val.prettyPrint()))