| 1 | #!/usr/bin/env python |
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| 2 | |
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| 3 | from xml.sax import make_parser |
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| 4 | from xml.sax.handler import ContentHandler |
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| 5 | import socket |
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| 6 | import sys |
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| 7 | |
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| 8 | DEBUG = 1 |
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| 9 | |
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| 10 | class GangliaXMLHandler( ContentHandler ): |
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| 11 | """ |
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| 12 | Parse/Handle XML |
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| 13 | """ |
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| 14 | |
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| 15 | metrics = [ ] |
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| 16 | |
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| 17 | #def __init__ ( self ): |
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| 18 | #self.isHostElement, self.isMetricElement, self.isGridElement, self.isClusterElement = 0, 0, 0, 0 |
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| 19 | #self.isGangliaXMLElement = 0 |
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| 20 | |
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| 21 | def startElement( self, name, attrs ): |
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| 22 | |
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| 23 | if name == 'ganglia_xml': |
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| 24 | self.XMLSource = attrs.get('source',"") |
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| 25 | self.gangliaVersion = attrs.get('version',"") |
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| 26 | |
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| 27 | elif name == 'grid': |
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| 28 | self.gridName = attrs.get('name',"") |
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| 29 | |
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| 30 | elif name == 'cluster': |
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| 31 | self.clusterName = attrs.get('name',"") |
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| 32 | |
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| 33 | elif name == 'host': |
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| 34 | self.hostName = attrs.get('name',"") |
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| 35 | self.hostIp = attrs.get('ip',"") |
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| 36 | self.hostReported = attrs.get('reported',"") |
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| 37 | |
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| 38 | elif name == 'metric': |
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| 39 | myMetric = { } |
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| 40 | myMetric['name'] = attrs.get('name',"") |
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| 41 | myMetric['val'] = attrs.get('val',"") |
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| 42 | |
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| 43 | self.metrics.append( myMetric ) |
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| 44 | if DEBUG: print ' | | |-metric: %s:%s' %( myMetric['name'], myMetric['val'] ) |
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| 45 | |
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| 46 | return |
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| 47 | |
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| 48 | def endElement( self, name ): |
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| 49 | if name == 'ganglia_xml': |
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| 50 | if DEBUG: print 'Found XML data: source %s version %s' %( self.XMLSource, self.gangliaVersion ) |
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| 51 | |
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| 52 | if name == 'grid': |
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| 53 | if DEBUG: print '`-Grid found: %s' %( self.gridName ) |
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| 54 | |
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| 55 | if name == 'cluster': |
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| 56 | if DEBUG: print ' |-Cluster found: %s' %( self.clusterName ) |
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| 57 | |
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| 58 | if name == 'host': |
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| 59 | if DEBUG: print ' | |-Host found: %s - ip %s reported %s' %( self.hostName, self.hostIp, self.hostReported ) |
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| 60 | |
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| 61 | #if name == 'metric': |
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| 62 | |
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| 63 | class GangliaXMLGatherer: |
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| 64 | """ |
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| 65 | Connect to a gmetad and return fd |
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| 66 | """ |
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| 67 | |
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| 68 | def __init__(self, host, port): |
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| 69 | self.host = host |
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| 70 | self.port = port |
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| 71 | |
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| 72 | def getFileDescriptor(self): |
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| 73 | s = None |
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| 74 | for res in socket.getaddrinfo(self.host, self.port, socket.AF_UNSPEC, socket.SOCK_STREAM): |
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| 75 | af, socktype, proto, canonname, sa = res |
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| 76 | try: |
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| 77 | s = socket.socket(af, socktype, proto) |
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| 78 | except socket.error, msg: |
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| 79 | s = None |
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| 80 | continue |
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| 81 | try: |
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| 82 | s.connect(sa) |
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| 83 | except socket.error, msg: |
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| 84 | s.close() |
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| 85 | s = None |
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| 86 | continue |
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| 87 | break |
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| 88 | |
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| 89 | if s is None: |
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| 90 | print 'could not open socket' |
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| 91 | sys.exit(1) |
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| 92 | |
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| 93 | return s.makefile() |
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| 94 | |
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| 95 | #s.send('Hello, world') |
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| 96 | #data = s.recv(1024) |
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| 97 | #s.close() |
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| 98 | #print 'Received', `data` |
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| 99 | |
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| 100 | def main(): |
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| 101 | """ |
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| 102 | My Main |
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| 103 | """ |
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| 104 | |
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| 105 | myXMLGatherer = GangliaXMLGatherer( 'localhost', 8651 ) |
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| 106 | |
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| 107 | myParser = make_parser() |
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| 108 | myHandler = GangliaXMLHandler() |
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| 109 | myParser.setContentHandler( myHandler ) |
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| 110 | myParser.parse( myXMLGatherer.getFileDescriptor() ) |
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| 111 | |
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| 112 | # Let's go |
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| 113 | main() |
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