[3] | 1 | #!/usr/bin/env python |
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| 2 | |
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[5] | 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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[9] | 7 | import rrdtool |
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| 8 | import string |
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[3] | 9 | |
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[8] | 10 | # Specify debugging level here; |
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| 11 | # |
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| 12 | # >10 = metric XML |
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| 13 | # >9 = host,cluster,grid,ganglia XML |
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[9] | 14 | # >8 = RRD activity,gmetad config parsing |
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[8] | 15 | # |
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| 16 | DEBUG_LEVEL = 9 |
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[6] | 17 | |
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[9] | 18 | # Where is the gmetad.conf located |
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| 19 | # |
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| 20 | GMETAD_CONF = '/etc/gmetad.conf' |
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| 21 | |
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| 22 | # Where to store the archived rrd's |
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| 23 | # |
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| 24 | ARCHIVE_PATH = '/data/toga/rrds' |
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| 25 | |
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| 26 | # List of data_source names to archive for |
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| 27 | # |
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| 28 | ARCHIVE_SOURCES = [ "LISA Cluster" ] |
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| 29 | |
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| 30 | # |
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| 31 | # Configuration ends |
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| 32 | # |
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| 33 | |
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[8] | 34 | """ |
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| 35 | This is TOrque-GAnglia's data Daemon |
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| 36 | """ |
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| 37 | |
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[6] | 38 | class GangliaXMLHandler( ContentHandler ): |
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[8] | 39 | "Parse Ganglia's XML" |
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[3] | 40 | |
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[6] | 41 | metrics = [ ] |
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| 42 | |
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| 43 | def startElement( self, name, attrs ): |
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[8] | 44 | "Store appropriate data from xml start tags" |
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[3] | 45 | |
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[7] | 46 | if name == 'GANGLIA_XML': |
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| 47 | self.XMLSource = attrs.get('SOURCE',"") |
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| 48 | self.gangliaVersion = attrs.get('VERSION',"") |
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[8] | 49 | if (DEBUG_LEVEL>9): print 'Found XML data: source %s version %s' %( self.XMLSource, self.gangliaVersion ) |
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[6] | 50 | |
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[7] | 51 | elif name == 'GRID': |
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| 52 | self.gridName = attrs.get('NAME',"") |
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[8] | 53 | if (DEBUG_LEVEL>9): print '`-Grid found: %s' %( self.gridName ) |
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[6] | 54 | |
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[7] | 55 | elif name == 'CLUSTER': |
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| 56 | self.clusterName = attrs.get('NAME',"") |
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[9] | 57 | self.rrd = RRDHandler( self.clusterName ) |
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[8] | 58 | if (DEBUG_LEVEL>9): print ' |-Cluster found: %s' %( self.clusterName ) |
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[6] | 59 | |
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[7] | 60 | elif name == 'HOST': |
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| 61 | self.hostName = attrs.get('NAME',"") |
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| 62 | self.hostIp = attrs.get('IP',"") |
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| 63 | self.hostReported = attrs.get('REPORTED',"") |
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[9] | 64 | # Reset the metrics list for each host |
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| 65 | self.metrics = [ ] |
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[8] | 66 | if (DEBUG_LEVEL>9): print ' | |-Host found: %s - ip %s reported %s' %( self.hostName, self.hostIp, self.hostReported ) |
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[6] | 67 | |
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[7] | 68 | elif name == 'METRIC': |
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[6] | 69 | myMetric = { } |
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[7] | 70 | myMetric['name'] = attrs.get('NAME',"") |
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| 71 | myMetric['val'] = attrs.get('VAL',"") |
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[6] | 72 | |
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| 73 | self.metrics.append( myMetric ) |
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[8] | 74 | if (DEBUG_LEVEL>10): print ' | | |-metric: %s:%s' %( myMetric['name'], myMetric['val'] ) |
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[6] | 75 | |
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[5] | 76 | return |
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[3] | 77 | |
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[9] | 78 | def endElement( self, name ): |
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[7] | 79 | #if name == 'ganglia_xml': |
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[3] | 80 | |
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[7] | 81 | #if name == 'grid': |
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[3] | 82 | |
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[7] | 83 | #if name == 'cluster': |
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[6] | 84 | |
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[9] | 85 | if name == 'host': |
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| 86 | self.storeMetrics( self.hostName ) |
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[6] | 87 | |
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| 88 | #if name == 'metric': |
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| 89 | |
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[9] | 90 | def storeMetrics( self, hostname ): |
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| 91 | |
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| 92 | for metric in self.metrics: |
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| 93 | self.rrd.checkCreate( hostname, metric['name'] ) |
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| 94 | self.rrd.update( hostname, metric['name'], metric['val'] ) |
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| 95 | if (DEBUG_LEVEL>8): print 'stored metric %s for %s: %s' %( hostname, metric['name'], metric['val'] ) |
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| 96 | sys.exit(1) |
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| 97 | |
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| 98 | |
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[5] | 99 | class GangliaXMLGatherer: |
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[8] | 100 | "Setup a connection and file object to Ganglia's XML" |
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[3] | 101 | |
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[8] | 102 | s = None |
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| 103 | |
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| 104 | def __init__( self, host, port ): |
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| 105 | "Store host and port for connection" |
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| 106 | |
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[5] | 107 | self.host = host |
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| 108 | self.port = port |
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[3] | 109 | |
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[8] | 110 | def __del__( self ): |
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| 111 | "Kill the socket before we leave" |
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| 112 | |
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| 113 | self.s.close() |
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| 114 | |
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| 115 | def getFileObject( self ): |
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| 116 | "Connect, and return a file object" |
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| 117 | |
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| 118 | for res in socket.getaddrinfo( self.host, self.port, socket.AF_UNSPEC, socket.SOCK_STREAM ): |
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[5] | 119 | af, socktype, proto, canonname, sa = res |
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| 120 | try: |
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[8] | 121 | self.s = socket.socket( af, socktype, proto ) |
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[5] | 122 | except socket.error, msg: |
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[8] | 123 | self.s = None |
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[5] | 124 | continue |
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| 125 | try: |
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[8] | 126 | self.s.connect( sa ) |
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[5] | 127 | except socket.error, msg: |
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[8] | 128 | self.s.close() |
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| 129 | self.s = None |
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[5] | 130 | continue |
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| 131 | break |
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[3] | 132 | |
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[8] | 133 | if self.s is None: |
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| 134 | print 'Could not open socket' |
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[5] | 135 | sys.exit(1) |
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| 136 | |
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[8] | 137 | return self.s.makefile( 'r' ) |
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[5] | 138 | |
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[8] | 139 | class GangliaXMLProcessor: |
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[5] | 140 | |
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[9] | 141 | def daemon( self ): |
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[8] | 142 | "Run as daemon forever" |
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[5] | 143 | |
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[8] | 144 | self.DAEMON = 1 |
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[5] | 145 | |
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[8] | 146 | # Fork the first child |
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| 147 | # |
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| 148 | pid = os.fork() |
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| 149 | if pid > 0: |
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| 150 | sys.exit(0) # end parrent |
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[7] | 151 | |
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[8] | 152 | # creates a session and sets the process group ID |
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| 153 | # |
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| 154 | os.setsid() |
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[7] | 155 | |
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[8] | 156 | # Fork the second child |
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| 157 | # |
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| 158 | pid = os.fork() |
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| 159 | if pid > 0: |
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| 160 | sys.exit(0) # end parrent |
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[5] | 161 | |
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[8] | 162 | # Go to the root directory and set the umask |
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| 163 | # |
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| 164 | os.chdir('/') |
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| 165 | os.umask(0) |
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| 166 | |
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| 167 | sys.stdin.close() |
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| 168 | sys.stdout.close() |
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| 169 | sys.stderr.close() |
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| 170 | |
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| 171 | os.open('/dev/null', 0) |
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| 172 | os.dup(0) |
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| 173 | os.dup(0) |
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| 174 | |
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| 175 | self.run() |
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| 176 | |
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[9] | 177 | def run( self ): |
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[8] | 178 | "Main thread" |
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| 179 | |
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| 180 | while ( 1 ): |
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| 181 | self.processXML() |
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| 182 | time.sleep( 5 ) |
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| 183 | |
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| 184 | def processXML( self ): |
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| 185 | "Process XML" |
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| 186 | |
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| 187 | myXMLGatherer = GangliaXMLGatherer( 'localhost', 8651 ) |
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| 188 | |
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| 189 | myParser = make_parser() |
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| 190 | myHandler = GangliaXMLHandler() |
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| 191 | myParser.setContentHandler( myHandler ) |
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| 192 | |
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| 193 | myParser.parse( myXMLGatherer.getFileObject() ) |
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| 194 | |
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[9] | 195 | class GangliaConfigParser: |
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| 196 | |
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| 197 | sources = [ ] |
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| 198 | |
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| 199 | def __init__( self, config ): |
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| 200 | self.config = config |
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| 201 | self.parseValues() |
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| 202 | |
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| 203 | def parseValues(self): |
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| 204 | "Parse certain values from gmetad.conf" |
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| 205 | |
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| 206 | readcfg = open( self.config, 'r' ) |
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| 207 | |
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| 208 | for line in readcfg.readlines(): |
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| 209 | |
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| 210 | if line.count( '"' ) > 1: |
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| 211 | |
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[10] | 212 | if line.find( 'data_source' ) != -1 and line[0] != '#': |
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[9] | 213 | |
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[11] | 214 | source = { } |
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| 215 | source['name'] = line.split( '"' )[1] |
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[9] | 216 | source_words = line.split( '"' )[2].split( ' ' ) |
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| 217 | |
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| 218 | for word in source_words: |
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| 219 | |
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| 220 | valid_interval = 1 |
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| 221 | |
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| 222 | for letter in word: |
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| 223 | if letter not in string.digits: |
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| 224 | valid_interval = 0 |
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| 225 | |
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[10] | 226 | if valid_interval and len(word) > 0: |
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[9] | 227 | source['interval'] = word |
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| 228 | if (DEBUG_LEVEL>8): print 'polling interval for %s = %s' %(source['name'], source['interval'] ) |
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| 229 | |
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| 230 | # No interval found, use Ganglia's default |
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| 231 | if not source.has_key( 'interval' ): |
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| 232 | source['interval'] = 15 |
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[11] | 233 | if (DEBUG_LEVEL>8): print 'polling interval for %s defaulted to 15' %(source['name']) |
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[9] | 234 | |
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| 235 | self.sources.append( source ) |
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| 236 | |
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| 237 | def getInterval( self, source_name ): |
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| 238 | for source in self.sources: |
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| 239 | if source['name'] == name: |
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| 240 | return source['interval'] |
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| 241 | return None |
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| 242 | |
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| 243 | class RRDHandler: |
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| 244 | |
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| 245 | def __init__( self, cluster ): |
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| 246 | self.cluster = cluster |
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| 247 | |
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| 248 | self.gmetad_conf = GangliaConfigParser( GMETAD_CONF ) |
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| 249 | |
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| 250 | def createCheck( self, host, metric ): |
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| 251 | "Check if an .rrd allready exists for this metric, create if not" |
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| 252 | |
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| 253 | rrd_dir = '%s/%s/%s' %( check_dir(ARCHIVE_PATH), self.cluster, host ) |
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| 254 | |
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| 255 | if not os.path.exists( rrd_dir ): |
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| 256 | os.makedirs( rrd_dir ) |
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| 257 | |
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| 258 | rrd_file = '%s/%s.rrd' %( rrd_dir, metric ) |
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| 259 | |
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| 260 | interval = self.gmetad_conf.getInterval( self.cluster ) |
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| 261 | |
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| 262 | def update( self, metric, timestamp, val ): |
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| 263 | |
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| 264 | pass |
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| 265 | |
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| 266 | #rrd.update( bla ) |
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| 267 | |
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| 268 | |
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[8] | 269 | def main(): |
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| 270 | "Program startup" |
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| 271 | |
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| 272 | myProcessor = GangliaXMLProcessor() |
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| 273 | myProcessor.processXML() |
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| 274 | |
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[9] | 275 | def check_dir( directory ): |
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| 276 | "Check if directory is a proper directory. I.e.: Does _not_ end with a '/'" |
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| 277 | |
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| 278 | if directory[-1] == '/': |
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| 279 | directory = directory[:-1] |
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| 280 | |
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| 281 | return directory |
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| 282 | |
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[5] | 283 | # Let's go |
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[9] | 284 | if __name__ == '__main__': |
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| 285 | main() |
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