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authorAnand Avati <avati@redhat.com>2013-10-20 08:45:18 -0700
committerVijay Bellur <vbellur@redhat.com>2013-10-28 00:33:19 -0700
commita4056292528db49a666422c7f8e0c032441cc83f (patch)
tree3d433a1ed29f1a07fdfc1425d2a52018e67328ad /xlators/bindings/python/src
parent0162933589d025ca1812e159368d107cfc355e8e (diff)
rpcsvc: implement per-client RPC throttling
Implement a limit on the total number of outstanding RPC requests from a given cient. Once the limit is reached the client socket is removed from POLL-IN event polling. Change-Id: I8071b8c89b78d02e830e6af5a540308199d6bdcd BUG: 1008301 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/6114 Reviewed-by: Santosh Pradhan <spradhan@redhat.com> Reviewed-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
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# Puppet External Data Sources 
#
# This is a parser function to read data from external files, this version
# uses CSV files but the concept can easily be adjust for databases, yaml
# or any other queryable data source.
#
# The object of this is to make it obvious when it's being used, rather than 
# magically loading data in when an module is loaded I prefer to look at the code
# and see statements like:
#
#     $snmp_contact = extlookup("snmp_contact")
#
# The above snippet will load the snmp_contact value from CSV files, this in its
# own is useful but a common construct in puppet manifests is something like this:
#
# case $domain {
#      "myclient.com": { $snmp_contact = "John Doe <john@myclient.com>" }
#      default:        { $snmp_contact = "My Support <support@my.com>" }
# }
#
# Over time there will be a lot of this kind of thing spread all over your manifests
# and adding an additional client involves grepping through manifests to find all the
# places where you have constructs like this.
#
# This is a data problem and shouldn't be handled in code, a using this function you
# can do just that.
#
# First you configure it in site.pp:
# $extlookup_datadir = "/etc/puppet/manifests/extdata"
# $extlookup_precedence = ["%{fqdn}", "domain_%{domain}", "common"]
#
# The array tells the code how to resolve values, first it will try to find it in
# web1.myclient.com.csv then in domain_myclient.com.csv and finally in common.csv
#