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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