Help me write a schema file: server.xsd

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Hussein Badakhchani's Blog | April 9, 2008   2:35 AM | Comments (2)

I have finally got back to work on a code share project I had been neglecting for sometime due to distractions at work. Now that I have aligned my work with the project the pressure is on again and work on Genesis (not to be confused with BEA's miserable application of the same name) has started with a vengence.

I will be mopping up the codeshare repository and blowing away the cob webs from the source over the next few days. Anyway in the spirit of Choom the predecessor of Genesis I wanted to invite the dev2dev community to help me write 'proper' code by criticizing, ridiculing and poking fun at my efforts, so here goes.

I need to write an XML schema file to represent the logical and physical properties associated with a server. For instance the kind of information I want in an XML instance of the schema would be the servers Manufacturer, architecture, supplier, network interface cards etc, etc.

This is what I have come up with so far:

<!--
  The Genesis schema for a Server. This file defines both the
  physical and logical properties of a server.
 -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="Server">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="manufacturer" type="xs:Manufacturer" />
        <xs:element name="supplier" type="xs:Supplier" />
        <xs:element name="model" type="xs:Model" />
        <xs:element name="arch" type="xs:Architecture" />
        <xs:element name="os" type="xs:OperatingSystem" />
        <xs:element name="memory" type="xs:Memory" />
        <xs:element name="nic" type="xs:NetworkInterfaceCard" />
        <xs:element name="sic" type="xs:SanInterfaceCard" />
        <xs:element name="function" type="xs:Function" />
      </xs:sequence>
    </xs:complexType>
  </xs:element>

  <xs:complexType name="Manufacturer">
    <xs:sequence>
      <xs:element name="Name" type="xs:string" />
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Supplier">
    <xs:sequence>
      <xs:element name="Name" type="xs:string" />
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Model">
    <xs:sequence>
      <xs:element name="Name" type="xs:string" />
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Architecture">
    <xs:sequence>
      <xs:element name="Name" type="xs:string" />
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="OperatingSystem">
    <xs:sequence>
      <xs:element name="Name" type="xs:string" />
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Memory">
    <xs:sequence>
      <xs:element name="Name" type="xs:string" />
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="NetworkInterfaceCard">
    <xs:sequence>
      <xs:element name="Name" type="xs:string" />
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="SanInterfaceCard">
    <xs:sequence>
      <xs:element name="Name" type="xs:string" />
    </xs:sequence>
  </xs:complexType>

  <xs:complexType name="Function">
    <xs:sequence>
      <xs:element name="Name" type="xs:string" />
    </xs:sequence>
  </xs:complexType>

</xs:schema>

The kind of things I would like feedback on are:

• XML coding standards, white spaces, comments, casing etc.
• Defining my complex types and suggestions for new types to include in the schema for server.
• Exising examples of similar shcemas.

I know I should post this to the forums put I felt I had to displace blog enteries on SOA at dev2dev.

Comments

• Some suggestions:
  1. SAN Interface Card should be Host Bus Adapter (HBA).
  2. I guess by function you mean server role? If so change the label to role and maybe include primary, secondary and tertiary.
  3. I'm guessing you want to include common hardware types e.g disks (SCSI,SATA etc) and configuration data e.g TCP network information, RAID details etc.
  
  My suggestions are engineer orientated. I'm putting myself in the shoes of poor guy who has to support these boxes. The kind of information I have suggested above should make his life easier.
  
  You got your work cut out so don't choom around.

  Posted by: salimb on April 9, 2008 at 8:20 AM

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