Diploma Thesis Santiago Gómez Sáez - IAAS

6. Implementation
In this chapter we describe the challenges and problems during the implementation phase
to fulfill the requirements specified in Chapter 4 and the design presented in Chapter 5 of
the system. Furthermore, we discuss the incompatibilities found with components we must
extend. We divide, as in the previous chapters, the implementation phase into the SQL
and NoSQL databases support, and provide a separate section for the extensions made to
JBIMulti2 and the Cache.
6.1. SQL Support Implementation
The implementation of the different components described in the SQL architecture approaches
in Chapter 5 are explained in this section. We describe the implementation of the three main
components which provide support for MySQL incoming requests, and a multi-database
protocol for outgoing requests. NMF routing in ServiceMix-mt is supported by the NMR and
a set of endpoints which are deployed on the ServiceMix-camel, and ServiceMix-camel-mt.
6.1.1. CDASMix MySQL Proxy
The CDASMix MySQL Proxy provides support for MySQL connections. It implements the
functionalities of a MySQL proxy and the needed routing operations and transformation
to integrate it in ServiceMix-mt. As discussed in Chapter 3, the original MySQL proxy
is implemented in the C programming language. Therefore, we cannot integrate it with
ServiceMix-mt, as this runs on a Java platform. The Myosotis Tungsten Connector is part of a
data replication engine developed by Continuent, Inc [Con]. One of the components which
build the application is a MySQL proxy written in the Java programming language. This
component suites the proxying requirements in this diploma thesis, and it runs on the Java
platform. However, it is not OSGi compliant, it is not integrated with the JBI environment,
and the backend databases’ meta-data must be explicitly defined in its configuration file.
Furthermore, it provides a direct connection from the component to the database. We utilize
it as a base for implementing the CDASMix MySQL Proxy, and aggregate the required functionalities
of this diploma thesis. We present the class diagram of the component in Section
A.1, but omit the attributes and operations listings due to the high amount of operations, and
attributes we manage in the component.
ServiceMix-mt is built as an OSGi container with JBI integration functionalities. Furthermore,
ServiceMix 4.x and later version consider the JBI framework deprecated in their systems.
Therefore, we build the CDASMix MySQL Proxy component as an OSGi bundle. During
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