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 | import rrdtool |
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8 | import string |
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9 | import os |
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10 | import os.path |
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11 | |
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12 | # Specify debugging level here; |
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13 | # |
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14 | # >10 = metric XML |
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15 | # >9 = host,cluster,grid,ganglia XML |
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16 | # >8 = RRD activity,gmetad config parsing |
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17 | # |
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18 | DEBUG_LEVEL = 9 |
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19 | |
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20 | # Where is the gmetad.conf located |
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21 | # |
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22 | GMETAD_CONF = '/etc/gmetad.conf' |
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23 | |
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24 | # Where to store the archived rrd's |
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25 | # |
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26 | ARCHIVE_PATH = '/data/toga/rrds' |
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27 | |
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28 | # List of data_source names to archive for |
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29 | # |
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30 | ARCHIVE_SOURCES = [ "LISA Cluster" ] |
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31 | |
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32 | # Amount of hours to store in one single archived .rrd |
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33 | # |
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34 | ARCHIVE_HOURS_PER_RRD = 24 |
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35 | |
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36 | |
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37 | # |
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38 | # Configuration ends |
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39 | # |
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40 | |
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41 | """ |
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42 | This is TOrque-GAnglia's data Daemon |
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43 | """ |
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44 | |
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45 | class GangliaXMLHandler( ContentHandler ): |
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46 | "Parse Ganglia's XML" |
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47 | |
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48 | metrics = [ ] |
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49 | |
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50 | def startElement( self, name, attrs ): |
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51 | "Store appropriate data from xml start tags" |
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52 | |
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53 | if name == 'GANGLIA_XML': |
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54 | self.XMLSource = attrs.get('SOURCE',"") |
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55 | self.gangliaVersion = attrs.get('VERSION',"") |
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56 | debug_msg( 10, 'Found XML data: source %s version %s' %( self.XMLSource, self.gangliaVersion ) ) |
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57 | |
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58 | elif name == 'GRID': |
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59 | self.gridName = attrs.get('NAME',"") |
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60 | self.time = attrs.get('LOCALTIME',"") |
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61 | debug_msg( 10, '`-Grid found: %s' %( self.gridName ) ) |
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62 | |
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63 | elif name == 'CLUSTER': |
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64 | self.clusterName = attrs.get('NAME',"") |
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65 | self.time = attrs.get('LOCALTIME',"") |
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66 | self.rrd = RRDHandler( self.clusterName ) |
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67 | debug_msg( 10, ' |-Cluster found: %s' %( self.clusterName ) ) |
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68 | |
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69 | elif name == 'HOST': |
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70 | self.hostName = attrs.get('NAME',"") |
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71 | self.hostIp = attrs.get('IP',"") |
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72 | self.hostReported = attrs.get('REPORTED',"") |
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73 | # Reset the metrics list for each host |
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74 | self.metrics = [ ] |
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75 | debug_msg( 10, ' | |-Host found: %s - ip %s reported %s' %( self.hostName, self.hostIp, self.hostReported ) ) |
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76 | |
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77 | elif name == 'METRIC': |
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78 | myMetric = { } |
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79 | myMetric['name'] = attrs.get('NAME',"") |
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80 | myMetric['val'] = attrs.get('VAL',"") |
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81 | myMetric['time'] = self.time |
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82 | |
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83 | self.metrics.append( myMetric ) |
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84 | debug_msg( 11, ' | | |-metric: %s:%s' %( myMetric['name'], myMetric['val'] ) ) |
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85 | |
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86 | return |
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87 | |
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88 | def endElement( self, name ): |
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89 | #if name == 'GANGLIA_XML': |
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90 | |
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91 | #if name == 'GRID': |
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92 | |
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93 | #if name == 'CLUSTER': |
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94 | |
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95 | if name == 'HOST': |
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96 | self.storeMetrics( self.hostName ) |
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97 | |
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98 | #if name == 'METRIC': |
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99 | |
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100 | def storeMetrics( self, hostname ): |
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101 | |
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102 | for metric in self.metrics: |
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103 | self.rrd.createCheck( hostname, metric ) |
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104 | self.rrd.update( hostname, metric['name'], metric['val'] ) |
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105 | debug_msg( 9, 'stored metric %s for %s: %s' %( hostname, metric['name'], metric['val'] ) ) |
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106 | sys.exit(1) |
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107 | |
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108 | |
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109 | class GangliaXMLGatherer: |
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110 | "Setup a connection and file object to Ganglia's XML" |
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111 | |
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112 | s = None |
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113 | |
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114 | def __init__( self, host, port ): |
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115 | "Store host and port for connection" |
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116 | |
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117 | self.host = host |
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118 | self.port = port |
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119 | |
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120 | def __del__( self ): |
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121 | "Kill the socket before we leave" |
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122 | |
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123 | self.s.close() |
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124 | |
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125 | def getFileObject( self ): |
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126 | "Connect, and return a file object" |
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127 | |
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128 | for res in socket.getaddrinfo( self.host, self.port, socket.AF_UNSPEC, socket.SOCK_STREAM ): |
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129 | af, socktype, proto, canonname, sa = res |
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130 | try: |
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131 | self.s = socket.socket( af, socktype, proto ) |
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132 | except socket.error, msg: |
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133 | self.s = None |
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134 | continue |
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135 | try: |
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136 | self.s.connect( sa ) |
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137 | except socket.error, msg: |
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138 | self.s.close() |
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139 | self.s = None |
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140 | continue |
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141 | break |
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142 | |
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143 | if self.s is None: |
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144 | print 'Could not open socket' |
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145 | sys.exit(1) |
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146 | |
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147 | return self.s.makefile( 'r' ) |
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148 | |
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149 | class GangliaXMLProcessor: |
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150 | |
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151 | def daemon( self ): |
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152 | "Run as daemon forever" |
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153 | |
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154 | self.DAEMON = 1 |
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155 | |
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156 | # Fork the first 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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161 | |
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162 | # creates a session and sets the process group ID |
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163 | # |
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164 | os.setsid() |
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165 | |
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166 | # Fork the second child |
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167 | # |
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168 | pid = os.fork() |
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169 | if pid > 0: |
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170 | sys.exit(0) # end parrent |
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171 | |
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172 | # Go to the root directory and set the umask |
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173 | # |
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174 | os.chdir('/') |
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175 | os.umask(0) |
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176 | |
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177 | sys.stdin.close() |
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178 | sys.stdout.close() |
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179 | if (DEBUGLEVEL == 0): |
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180 | sys.stderr.close() |
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181 | |
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182 | os.open('/dev/null', 0) |
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183 | os.dup(0) |
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184 | os.dup(0) |
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185 | |
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186 | self.run() |
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187 | |
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188 | def run( self ): |
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189 | "Main thread" |
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190 | |
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191 | while ( 1 ): |
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192 | self.processXML() |
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193 | time.sleep( 5 ) |
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194 | |
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195 | def processXML( self ): |
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196 | "Process XML" |
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197 | |
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198 | myXMLGatherer = GangliaXMLGatherer( 'localhost', 8651 ) |
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199 | |
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200 | myParser = make_parser() |
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201 | myHandler = GangliaXMLHandler() |
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202 | myParser.setContentHandler( myHandler ) |
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203 | |
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204 | myParser.parse( myXMLGatherer.getFileObject() ) |
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205 | |
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206 | class GangliaConfigParser: |
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207 | |
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208 | sources = [ ] |
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209 | |
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210 | def __init__( self, config ): |
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211 | self.config = config |
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212 | self.parseValues() |
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213 | |
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214 | def parseValues(self): |
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215 | "Parse certain values from gmetad.conf" |
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216 | |
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217 | readcfg = open( self.config, 'r' ) |
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218 | |
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219 | for line in readcfg.readlines(): |
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220 | |
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221 | if line.count( '"' ) > 1: |
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222 | |
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223 | if line.find( 'data_source' ) != -1 and line[0] != '#': |
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224 | |
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225 | source = { } |
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226 | source['name'] = line.split( '"' )[1] |
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227 | source_words = line.split( '"' )[2].split( ' ' ) |
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228 | |
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229 | for word in source_words: |
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230 | |
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231 | valid_interval = 1 |
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232 | |
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233 | for letter in word: |
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234 | if letter not in string.digits: |
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235 | valid_interval = 0 |
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236 | |
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237 | if valid_interval and len(word) > 0: |
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238 | source['interval'] = word |
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239 | debug_msg( 9, 'polling interval for %s = %s' %(source['name'], source['interval'] ) ) |
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240 | |
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241 | # No interval found, use Ganglia's default |
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242 | if not source.has_key( 'interval' ): |
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243 | source['interval'] = 15 |
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244 | debug_msg( 9, 'polling interval for %s defaulted to 15' %(source['name']) ) |
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245 | |
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246 | self.sources.append( source ) |
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247 | |
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248 | def getInterval( self, source_name ): |
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249 | for source in self.sources: |
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250 | if source['name'] == source_name: |
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251 | return source['interval'] |
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252 | return None |
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253 | |
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254 | class RRDHandler: |
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255 | |
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256 | def __init__( self, cluster ): |
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257 | self.cluster = cluster |
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258 | |
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259 | self.gmetad_conf = GangliaConfigParser( GMETAD_CONF ) |
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260 | |
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261 | def createCheck( self, host, metric ): |
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262 | "Check if an .rrd allready exists for this metric, create if not" |
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263 | |
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264 | rrd_parameters = [ ] |
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265 | rrd_dir = '%s/%s/%s' %( check_dir(ARCHIVE_PATH), self.cluster, host ) |
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266 | |
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267 | if not os.path.exists( rrd_dir ): |
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268 | os.makedirs( rrd_dir ) |
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269 | |
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270 | rrd_file = '%s/%s.rrd' %( rrd_dir, metric['name'] ) |
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271 | |
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272 | interval = self.gmetad_conf.getInterval( self.cluster ) |
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273 | heartbeat = 8 * int(interval) |
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274 | |
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275 | param_step1 = '--step' |
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276 | param_step2 = str( interval ) |
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277 | |
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278 | param_start1 = '--start' |
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279 | param_start2 = str( int( metric['time'] ) - 1 ) |
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280 | |
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281 | param_ds = 'DS:sum:GAUGE:%d:U:U' %heartbeat |
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282 | param_rra = 'RRA:AVERAGE:0.5:1:%s' %(ARCHIVE_HOURS_PER_RRD * 240) |
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283 | |
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284 | rrdtool.create( str(rrd_file), param_step1, param_step2, param_start1, param_start2, param_ds, param_rra ) |
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285 | |
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286 | def update( self, metric, timestamp, val ): |
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287 | |
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288 | pass |
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289 | |
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290 | #rrd.update( bla ) |
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291 | |
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292 | |
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293 | def main(): |
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294 | "Program startup" |
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295 | |
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296 | myProcessor = GangliaXMLProcessor() |
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297 | myProcessor.processXML() |
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298 | |
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299 | def check_dir( directory ): |
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300 | "Check if directory is a proper directory. I.e.: Does _not_ end with a '/'" |
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301 | |
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302 | if directory[-1] == '/': |
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303 | directory = directory[:-1] |
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304 | |
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305 | return directory |
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306 | |
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307 | def debug_msg( level, msg ): |
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308 | |
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309 | if (DEBUG_LEVEL >= level): |
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310 | sys.stderr.write( msg + '\n' ) |
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311 | |
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312 | # Let's go |
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313 | if __name__ == '__main__': |
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314 | main() |
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