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manager: Enhance event filtering for performance
UserNote: You can now perform more granular filtering on events in manager.conf using expressions like `eventfilter(name(Newchannel),header(Channel),method(starts_with)) = PJSIP/` This is much more efficient than `eventfilter = Event: Newchannel.*Channel: PJSIP/` Full syntax guide is in configs/samples/manager.conf.sample.
This commit is contained in:
George Joseph
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main/manager.c
1010
main/manager.c
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@@ -1320,64 +1320,124 @@
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</enum>
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</enumlist>
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</parameter>
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<parameter name="FilterType">
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<para>FilterType can be one of the following:</para>
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<parameter name="MatchCriteria">
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<para>
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Advanced match criteria. If not specified, the <literal>Filter</literal>
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parameter is assumed to be a regular expression and will be matched against
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the entire event payload.
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</para>
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<para>
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Syntax: [name(<event_name>)][,header(<header_name>)][,<match_method>]
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</para>
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<para>
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One of each of the following may be specified separated by commas.
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</para>
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<para>
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</para>
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<enumlist>
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<enum name="regex">
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<para>The Filter parameter contains a regular expression
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which will be applied to the contents of the MatchAgainst
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parameter.</para>
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<enum name="action(include|exclude)">
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<para>
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Instead of prefixing the Filter with <literal>!</literal> to exclude matching events,
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specify <literal>action(exclude)</literal>. Although the default is <literal>include</literal>
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if <literal>action</literal> isn't specified, adding <literal>action(include)</literal>
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will help with readability.
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</para>
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<para>
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</para>
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</enum>
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<enum name="exact">
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<para>The Filter parameter contains a string
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which will be exactly matched to the contents of the MatchAgainst
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parameter.</para>
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<enum name="name(<event_name>)">
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<para>
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Only events with name <replaceable>event_name</replaceable> will be included.
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</para>
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<para>
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</para>
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</enum>
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<enum name="partial">
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<para>The Filter parameter contains a string
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which will be searched for in the contents of the MatchAgainst
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parameter.</para>
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<enum name="header(<header_name>)">
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<para>
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Only events containing a header with a name of <replaceable>header_name</replaceable>
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will be included and the <literal>Filter</literal> parameter (if supplied) will only be
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matched against the value of the header.
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</para>
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<para>
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</para>
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</enum>
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<enum name="<match_method>">
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<para>Specifies how the <literal>Filter</literal> parameter
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is to be applied to the results of applying any
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<literal>name(<event_name>)</literal> and/or
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<literal>header(<header_name>)</literal> parameters
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above.
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</para>
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<para>
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One of the following:
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</para>
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<enumlist>
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<enum name="regex">
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<para>The <literal>Filter</literal> parameter contains a regular expression
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which will be matched against the result. (default)
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</para>
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<para>
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</para>
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</enum>
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<enum name="exact">
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<para>The <literal>Filter</literal> parameter contains a string which must
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exactly match the entire result.
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</para>
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<para>
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</para>
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</enum>
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<enum name="startsWith">
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<para>The <literal>Filter</literal> parameter contains a string which must
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match the beginning of the result.
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</para>
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<para>
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</para>
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</enum>
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<enum name="endsWith">
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<para>The <literal>Filter</literal> parameter contains a string which must
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match the end of the result.
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</para>
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<para>
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</para>
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</enum>
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<enum name="contains">
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<para>The <literal>Filter</literal> parameter contains a string
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which will be searched for in the result.
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</para>
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<para>
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</para>
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</enum>
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<enum name="none">
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<para>The <literal>Filter</literal> parameter is ignored.
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</para>
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</enum>
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</enumlist>
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</enum>
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</enumlist>
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<para>The default is <literal>regex</literal></para>
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</parameter>
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<parameter name="MatchAgainst">
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<para>MatchAgainst can be one of the following:</para>
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<enumlist>
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<enum name="name">
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<para>Match only against the event name.</para>
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</enum>
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<enum name="header(header_name)">
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<para>Match only against the contents of this event header.</para>
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</enum>
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<enum name="all">
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<para>Match against the entire event payload.</para>
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</enum>
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</enumlist>
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<para>The default is <literal>all</literal></para>
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</parameter>
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<parameter name="Filter">
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<para>Filters can be whitelist or blacklist</para>
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<para>Example whitelist filter: "Event: Newchannel"</para>
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<para>Example blacklist filter: "!Channel: DAHDI.*"</para>
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<para>This filter option is used to whitelist or blacklist events per user to be
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reported with regular expressions and are allowed if both the regex matches
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and the user has read access as defined in manager.conf. Filters are assumed to be for whitelisting
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unless preceeded by an exclamation point, which marks it as being black.
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Evaluation of the filters is as follows:</para>
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<para>- If no filters are configured all events are reported as normal.</para>
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<para>- If there are white filters only: implied black all filter processed first, then white filters.</para>
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<para>- If there are black filters only: implied white all filter processed first, then black filters.</para>
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<para>- If there are both white and black filters: implied black all filter processed first, then white
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filters, and lastly black filters.</para>
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<para>The match expression to be applied to the event.</para>
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<para>See the manager.conf.sample file in the configs/samples
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directory of the Asterisk source tree for more information.</para>
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</parameter>
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</syntax>
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<description>
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<para>The filters added are only used for the current session.
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Once the connection is closed the filters are removed.</para>
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<para>This comand requires the system permission because
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<para>See the manager.conf.sample file in the configs/samples
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directory of the Asterisk source tree for a full description
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and examples.</para>
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<note>
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<para>
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The filters added are only used for the current session.
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Once the connection is closed the filters are removed.
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</para>
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</note>
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<note>
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<para>
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This comand requires the system permission because
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this command can be used to create filters that may bypass
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filters defined in manager.conf</para>
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filters defined in manager.conf
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</para>
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</note>
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</description>
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</manager>
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<manager name="BlindTransfer" language="en_US">
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