xml-validation

Validation - XML

This sample explains how to set up and use the validator plugin, utilizing XML schemas for validation.

Running the Example

1. Go to the directory <membrane-root>/examples/xml/xml-validation.

2. Start membrane.cmd or membrane.sh.

3. Run curl -d @year.xml http://localhost:2000/. Observe that you get a successful response.

4. Run curl -d @invalid-year.xml http://localhost:2000/. Observe that you get a validation error response.

How it is done

Let's examine the proxies.xml file.

<router>
  <api port="2000">
    <request>
      <validator schema="year.xsd" />
    </request>
    <response>
      <validator schema="amount.xsd" />
    </response>
    <target host="localhost" port="2001" />
  </api>
    
  <api port="2001">
    <groovy>
      Response.ok("&lt;amount&gt;100&lt;/amount&gt;").build()
    </groovy>
  </api>
</router>

We have two <api> components in action, operating on ports 2000 and 2001.
The initial one employs the XML schema in the <validator /> component's schema attribute for validating requests. Upon successful validation, these requests are forwarded to the second <api> component.
Here, an XML document is generated and redirected back to the first <api> component for a secondary round of validation, this time using a different schema for response validation.

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See:

• validator reference