swaggerProxy cannot be path-prefixed and swaggerRewriter cannot be used as a stand-in replacement

[meyergru]

I tried using the petstore swagger example from the examples:

        <swaggerProxy url="http://petstore.swagger.io/v2/swagger.json">
        </swaggerProxy>

That itself works fine - although the services themselves are not accessible, either (like http://localhost:8080/ works while http://localhost:8080/v2/pet/8 does not).

However, my intent is to user Membrane as a service hub within Tomcat.
Therefore, I need to differentiate services by URL prefix, not by TCP port, which I usually do like this:

        <serviceProxy name="Google">
            <path>/google</path>
            <rewriter>
                <map from="^/google/(.*)" to="/$1" />
            </rewriter>
            <target host="www.google.com" port="443"><ssl/></target>
        </serviceProxy>

I have found no way to use swaggerProxy like soapProxy with different paths pointing to several backend services like this:

        <soapProxy wsdl="http://www.thomas-bayer.com/axis2/services/BLZService?wsdl">
            <path>/blz</path>
            <soapStackTraceFilter />
            <validator />
        </soapProxy>

        <soapProxy wsdl="http://www.thomas-bayer.com/axis2/services/CSV2XMLService?wsdl">
            <path>/csv</path>
            <soapStackTraceFilter />
            <validator />
        </soapProxy>

It seems that swaggerProxy itself does not support a path element.

When I try to use an equivalent serviceProxy with swaggerRewriter instead, it does not work either way:

        <serviceProxy>
            <swaggerRewriter/>
            <target host="petstore.swagger.io" port="80" />
        </serviceProxy>

Gives an exception saying: "com.predic8.membrane.core.resolver.ResourceRetrievalException: null while retrieving swagger.json".

        <serviceProxy>
            <swaggerRewriter swaggerJson="/v2/swagger.json"/>
            <target host="petstore.swagger.io" port="80" />
        </serviceProxy>

Same result. Interesting question: How should swaggerRewriter know which URL to prefix to swaggerJson in order to fetch it? The default of "swagger.json" does not suffice. So I probably need to give a full URL:

        <serviceProxy>
            <swaggerRewriter swaggerJson="http://petstore.swagger.io/v2/swagger.json"/>
            <target host="petstore.swagger.io" port="80" />
        </serviceProxy>

and indeed, that works.

But when I try to combine that with path, it goes horribly wrong, neither:

        <serviceProxy>
	    <path>/petstore</path>
            <swaggerRewriter swaggerJson="http://petstore.swagger.io/v2/swagger.json"/>
            <target host="petstore.swagger.io" port="80" />
        </serviceProxy>

nor

        <serviceProxy>
	    <path>/petstore</path>
            <rewriter>
                <map from="^/petstore/(.*)" to="/$1" />
            </rewriter>
            <swaggerRewriter swaggerJson="http://petstore.swagger.io/v2/swagger.json"/>
            <target host="petstore.swagger.io" port="80" />
        </serviceProxy>

nor the other way around:

        <serviceProxy>
	    <path>/petstore</path>
            <swaggerRewriter swaggerJson="http://petstore.swagger.io/v2/swagger.json"/>
            <rewriter>
                <map from="^/petstore/(.*)" to="/$1" />
            </rewriter>
            <target host="petstore.swagger.io" port="80" />
        </serviceProxy>

work.

But maybe I am doing it wrong?

[symle]

Yes there is a bug, in SwaggerProxyKey. It work as

<serviceProxy`` port="8000"> <swaggerRewriter swaggerJson="https://petstore.swagger.io/v2/swagger.json" /> <target host="petstore.swagger.io" port="443" /> </serviceProxy>
For swaggerProxy, I will write the patch

[symle]

methodMatch(String method, PathItem path){...

path.getXXX all http methots get always null, the problem occurs because of this.

[symle]

Bug resolved