Web Detector

The WebDetector finds and assigns services based on HTTP.

Detector facts

Implementation

org.opennms.netmgt.provision.detector.web.WebDetector

Configuration and use

The WebDetector uses the common configuration parameters.

Table 1. Optional parameters for the WebDetector
Parameter	Description	Default value
authEnable	Whether to enable basic authentication.	false
authPassword	Password required for authentication.	admin
authPreemtive	Whether to send basic authentication even if the site did not ask for it.	true
authUser	Username required for authentication.	admin
headers	Optional headers to pass in the HTTP request.	none
path	The relative URL to call in the request.	/
port	Port of the web server the detector is connecting to.	80
queryString	The query string to add to the URL after a ? (for example, foo=bar&baz=zot).	none
responseRange	Range for allowed HTTP error codes from the response.	100-399
responseText	Text to look for in the response body. This will be matched against every line, and it will be considered a success at the first match. Substring match by default (see note below regarding regular expressions).	none
schema	Protocol/scheme to use.	http
serviceName	A custom service name to identify this service.	WEB
useHttpV1	True/false whether to use HTTP 1.0 or 1.1.	false
useSSLFilter	If true, certificate verification is skipped.	false
useSystemProxy	Should the system-wide proxy settings be used? Configure system proxy settings via system properties.	false
userAgent	Set the user agent field in HTTP header to identify the OpenNMS monitor.	OpenNMS WebMonitor
virtualHost	Set the virtual host field in HTTP header. In case of an HTTPS request, this is also the virtual domain to send as part of the TLS negotiation.	none

If there is a ~ at the beginning of the parameter, the rest of the string will be used as a regular expression pattern match, otherwise the match will be a substring one. The regular expression match is anchored at the beginning and end of the line, so you will likely need to put a .* on both sides of your pattern unless you are going to match on the entire line.

Example configuration

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<foreign-source date-stamp="2010-06-29T13:15:30.494+02:00" name="test" xmlns="http://xmlns.opennms.org/xsd/config/foreign-source">
  <scan-interval>1d</scan-interval>
    <detector name="ServiceName" class="org.opennms.netmgt.provision.detector.web.WebDetector">
      <parameter key="useSSLFilter" value="true"/>
      <parameter key="port" value="443"/>
      <parameter key="schema" value="https"/>
      <parameter key="timeout" value="5000"/>
      <parameter key="responseText" value="~^.*WoooRegEx.*$"/>
      <parameter key="path" value="/login.jsp"/>
    </detector>
  <policies/>
</foreign-source>