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From "Josef Jahn (JIRA)" <>
Subject [jira] [Created] (CAMEL-4178) WireTap should auto-convert streams to string so it always works by default
Date Wed, 06 Jul 2011 12:05:16 GMT
WireTap should auto-convert streams to string so it always works by default

                 Key: CAMEL-4178
             Project: Camel
          Issue Type: Improvement
          Components: camel-core
    Affects Versions: 2.7.2
            Reporter: Josef Jahn
            Priority: Minor

When wiretapping the result of a http request (to uri="http://foo"), the wiretap does not
work because the result is a stream. The developer has to remember to convert the result to
a string first to avoid the first consumption of the stream to make the data not available
for wiretapping.

In the interest of "defaults that work", maybe the wiretap should "know" to handle streams
in a way that makes the wiretap work without extra consideration by the developer. Streams
could be auto-converted to string or, if the amount of data is larger than a certain pre-configured
threshold, cache them to disk and read the resulting file.

Here's an example of a route that needs a convertBodyTo to make the wiretap work. Without
this, the wiretap quietly fails, and it can be quite time-consuming to try to find out why.

            <!-- cxf consumer using MESSAGE format -->
			<from uri="jetty:"/>
            <!-- log input received -->
			<wireTap uri="file:data/recording?fileName=wsn-${date:now:yyyyMMdd}.log&amp;fileExist=Append">
					<simple>[${date:now:dd.MM.yyyy hh:mm:ss}] [INCOMING REQUEST]: ${in.body}&#xA;&#xD;</simple>
            <!-- send proxied request to real web service -->
			<removeHeaders pattern="CamelHttp*"/>
			<removeHeader headerName="Accept-Encoding"/>
            <to uri=""/>
            <!-- convert to string to prevent the stream to be consumed by the wiretap
			<convertBodyTo type="String"/>
            <!-- log answer from real web service -->
			<wireTap uri="file:data/recording?fileName=wsn-${date:now:yyyyMMdd}.log&amp;fileExist=Append">
					<simple>[${date:now:dd.MM.yyyy hh:mm:ss}] [OUTGOING RESPONSE]: ${in.body}&#xA;&#xD;</simple>

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