[
https://issues.apache.org/jira/browse/TS-4723?focusedWorklogId=26912&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-26912
]
ASF GitHub Bot logged work on TS-4723:
--------------------------------------
Author: ASF GitHub Bot
Created on: 23/Aug/16 14:00
Start Date: 23/Aug/16 14:00
Worklog Time Spent: 10m
Work Description: Github user SolidWallOfCode commented on a diff in the
pull request:
https://github.com/apache/trafficserver/pull/843#discussion_r75871198
--- Diff: plugins/experimental/carp/CarpHost.h ---
@@ -0,0 +1,141 @@
+/** @file
+
+ Loads the CARP configuration
+
+ @section license License
+
+ Licensed to the Apache Software Foundation (ASF) under one
+ or more contributor license agreements. See the NOTICE file
+ distributed with this work for additional information
+ regarding copyright ownership. The ASF licenses this file
+ to you under the Apache License, Version 2.0 (the
+ "License"); you may not use this file except in compliance
+ with the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+#ifndef __CARPHOST_H__
+#define __CARPHOST_H__ 1
+
+#define DEFAULT_GROUP 1
+
+#include <string>
+#include <netinet/in.h>
+
+class CarpHost
+{
+public:
+
+ CarpHost(std::string& name, int port, std::string& scheme, int weight,
int group = DEFAULT_GROUP) : _port(port),
+ _name(name), _scheme(scheme), _weight(weight), _group(group)
+ {
+ _healthCheckAddr.ss_family=AF_UNSPEC;
+ };
+
+ ~CarpHost()
+ {
+
+ };
+
+ int getPort()
+ {
+ return _port;
+ };
+
+ void setPort(int p)
+ {
+ _port = p;
+ };
+
+ const std::string& getName()
+ {
+ return _name;
+ };
+
+ void setName(std::string& n)
--- End diff --
`std::string const& n`
Issue Time Tracking
-------------------
Worklog Id: (was: 26912)
Time Spent: 6h (was: 5h 50m)
> ATS CARP Plugin
> ---------------
>
> Key: TS-4723
> URL: https://issues.apache.org/jira/browse/TS-4723
> Project: Traffic Server
> Issue Type: New Feature
> Components: Plugins
> Reporter: Eric Schwartz
> Assignee: Eric Schwartz
> Fix For: 7.0.0
>
> Time Spent: 6h
> Remaining Estimate: 0h
>
> Open sourcing this plugin we use internally within Yahoo in place of
> hierarchical caching.
> CARP is a plugin that allows you to group a bunch of ATS hosts into a cluster
> and share cache space across the entire group. This is done with consistent
> hashing on the object URL to generate an "owner" node in the cluster.
> Requests to any other node in the cluster will be forwarded on to the
> corresponding owner. More info in the README.
> Difference from internal version of note:
> I've ripped out some code we weren't entirely sure we could open source
> because of a hash function. If it turns out that we can open source this,
> I'll do so. The CarpHashAlgorithm class is meant to be extensible, so any
> consistent hash function can replace it. The function included here is pretty
> straightforward but not what we use in production, so just wanted to use that
> caveat.
> One last caveat:
> You'll see some code and documentation in here for object replication. This
> is something I added recently to CARP that allows you to specify an object be
> replicated a certain number of times in the cluster. This is useful if you
> have a network partition or if you're performing some sort of update. When an
> object's primary owner is unreachable, a node in the cluster can go to the
> secondary owner if it's available rather than having to fall all the way back
> to origin. While I've done some initial testing on this with my own cluster
> of hosts, it's not been tested in production so use at your own risk for now.
> I'll be sure to keep the open source community informed on the progress of
> our tests with this feature.
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