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INT-2459 Add Support for TCP Failover

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Implemented a ConnectionFactory that wraps a list
of connection factories, used to fail over if
a connection fails.

INT-2459 Polishing

Rebase; fix test; move boolean resets to finally block
in server factories.

INT-2459 Polishing

PR Review

Fix a test that could block indefinitely when error
in code under test.
This commit is contained in:
Gary Russell
2012-06-06 13:20:32 -04:00
committed by Oleg Zhurakousky
parent b7a4529a6e
commit 7ede0eb4e6
15 changed files with 887 additions and 73 deletions
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48
src/reference/docbook/ip.xml
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@@ -329,8 +329,14 @@
This default behavior can be overridden by setting the <literal>lookup-host</literal>
attribute to "false".
</para>
<para>
<note>
<note>
<para>
It is possible to modify the creation of and/or attributes of sockets - see
<xref linkend="ssl-tls"/>. As is noted there, such modifications are possible whether
or not SSL is being used.
</para>
</note>
<section id="caching-cf">
<title>TCP Caching Client Connection Factory</title>
<para>
As noted above, TCP sockets cam be 'single-use' (one request/response)
@@ -349,15 +355,35 @@
process multiple concurrent requests with a pool of shared
connections.
</para>
</note>
</para>
<note>
<para>
It is possible to modify the creation of and/or attributes of sockets - see
<xref linkend="ssl-tls"/>. As is noted there, such modifications are possible whether
or not SSL is being used.
</para>
</note>
</section>
<section id="failover-cf">
<title>TCP Failover Client Connection Factory</title>
<para>
It is now possible to configure a TCP connection factory that
supports failover to one or more other servers. When sending
a message, the factory will iterate over all its configured
factories until either the message can be sent, or no connection
can be found. Initially, the first factory in the configured
list is used; if a connection subsequently fails the next
factory will become the current factory.
</para>
<para>
<programlisting language="xml"><![CDATA[<bean id="failCF" class="o.s.i.ip.tcp.connection.FailoverClientConnectionFactory">
<constructor-arg>
<list>
<ref bean="clientFactory1"/>
<ref bean="clientFactory2"/>
</list>
</constructor-arg>
</bean>
]]></programlisting>
</para>
<para>
<note>When using the failover connection factory, the singleUse property must be consistent between
the factory itself and the list of factories it is configured to use.
</note>
</para>
</section>
</section>
<section id="ip-interceptors">
<title>TCP Connection Interceptors</title>